Source: https://patents.google.com/patent/DE4115372C2/en
Timestamp: 2020-07-12 20:43:17
Document Index: 715666818

Matched Legal Cases: ['art 2023', 'art 2023', 'art 2023', 'arts 2244', 'arts 2244', 'art 2244', 'art 2023']

DE4115372C2 - Spectacle frame scanning and measuring device - Google Patents
Spectacle frame scanning and measuring device
DE4115372C2
DE4115372C2 DE19914115372 DE4115372A DE4115372C2 DE 4115372 C2 DE4115372 C2 DE 4115372C2 DE 19914115372 DE19914115372 DE 19914115372 DE 4115372 A DE4115372 A DE 4115372A DE 4115372 C2 DE4115372 C2 DE 4115372C2
DE19914115372
DE4115372A1 (en
1990-08-02 Priority to JP2205384A priority Critical patent/JP2925685B2/en
1991-05-10 Application filed by Nidek Co Ltd filed Critical Nidek Co Ltd
1992-02-06 Publication of DE4115372A1 publication Critical patent/DE4115372A1/en
2001-11-29 Publication of DE4115372C2 publication Critical patent/DE4115372C2/en
The invention relates to a spectacle frame scanning and ver measuring device for measuring the configuration of a Spectacle frame by inserting a measuring head into a V-groove of the eyeglass frame and by measuring the amount of movement of the measuring head.
Conventionally, an eyeglass frame is passed in one agreed position in an eyeglass frame scan and survey solution device of a glasses or eyeglass lens polishing and / or grinding device by against the Rack creates a rack holder, which by means of a Feed screw is adjusted, or by holding the Ge put it at two points, one in the top and the other in the lower section of it, or at three points, two in the upper and one in the lower Ab cut the same.
When performing the horizontal position adjustment of the The technician must wear glasses to a high degree rely on his experience. Or the setting will be there by running out the nose pillow of the eye glasses or the glasses against a nose-like object.
It is true that the reference line for the vertical one position of the eyeglass frame (a line that marks the middle ren geometric centers of the right and left lens actuator connects) in the above facilities can be located in the prior art. However it is using such techniques impossible to broaden the horizon tale centerline of the eyeglass frame with respect to the Positioning the scanning and measuring device precisely. The is because the nose pillow of the glasses frame in the are generally not arranged symmetrically. Accordingly one does not rely on the accuracy of the horizontal Mittelli never leave the glasses frame due to data you received by the scanning and measuring device. In the process of fitting lenses into the eyeglass frame is for example the distance between the middle geometri centers of the right and left frame parts significant factor. Conventionally, however, there are so far no other way of measuring this distance in the rack, except measuring with a ruler what but leads to rather inaccurate measurements.
EP 0 143 468 A2 describes a method and a device device for grinding the edge part of glasses is known, wherein a digital measurement of the eyeglass frame openings and then grinding the edge parts of the lenses on the Basis of the digital values obtained through the measurement follows to obtain a peripheral configuration of the glasses stick to the shape and dimensions of the eyeglass frame corresponds.
The features according to which an eyeglass frame scanning and measuring device comprises the following can be derived essentially from this EP 0 143 468 A2:
a) a measuring head holding device for movably holding a Measuring head in the direction of the respective radius vector of the eyeglass frame and in one to the radius vector right direction; such as
b) a measuring device for measuring the movement of the measuring head holding devices, so that the three-dimensional configuration ration of the eyeglass frame is obtained; and
c) a pair of frame holders that abut the glasses frame gene, the frame holders are displaceable in such a way that they have the eyeglass frame in the direction of the radius position vector.
EP 0 143 468 A2 is also the clamping of the glasses frame in a sandwich-like manner at a certain level refer to.
Furthermore, from DE 23 32 001 B2, the edge grinding Machine for eyeglass lenses, pens for holding the Glasses frame known, but from behind on the glasses The steering rack is opened by screwing it in place be pressed.
In addition, EP 0 298 129 A1 and DE 37 24 814 A1 one device each for scanning the spectacle lens opening gene known in an eyeglass frame, the bracket of Spectacle frame is not described in more detail in EP 0 298 129 A1 and is shown, while according to DE 37 24 814 A1 Eyeglass frame positioned on a bridge as well as between Edge surfaces of the glasses on the one hand and a thumb pressure on a rod movable system part on the other hand is held immobile.
All these aforementioned holding devices for holding the Glasses are, however, just like the holding device gene of the type mentioned, in so far unsatisfactory, as they do not allow the horizontal center line of the glasses position the frame precisely.
The object of the invention is therefore to provide a spectacle frame to provide probe and measurement equipment, which enables the horizontal center line of a pair of glasses frame on or in the scanning and measuring device to position exactly.
Furthermore, with the invention, a spectacle frame scanning and measuring device are made available, which allows the distance between the middle geome center of the right and left frame parts to get exactly in the glasses frame.
In addition, the invention is intended to and measuring device are made available in which specific levels can be used Hold glasses frame in between so that the measurement he is lightened.
Finally, with the invention, a spectacle frame scanning and measuring device are made available in which an eyeglass frame easily in position or in one predetermined position can be fixed.
With the invention, the above object is achieved and the aforementioned advantages achieved by means of a spectacle frame scanning and measuring device for measuring the configuration of a spectacle frame by inserting a measuring head into a V-groove of the spectacle frame and by measuring the amount of movement of the measuring head, comprising :
a) a measuring head holding device for movably holding the Measuring head in the direction of the respective radius vector of the eyeglass frame and in one to the radius vector right direction;
b) a measuring device for measuring the movement of the measuring head holding device so that the three-dimensional configuration tion of the eyeglass frame is obtained;
c) a pair of frame holders that abut the glasses frame gene, the frame holders are displaceable in such a way that they have the eyeglass frame in the direction of the radius position vector; and
d) a holding device for holding the eyeglass frame in of an interposed and / or pinched type and Way, or in a sandwich-way, the Holding device has at least four pairs of pins and the right and left eyeglass part by means of of pairs of pens essentially in a horizon holds symmetrical height with respect to the measuring head, the pairs of pins being sideways from the glasses are arranged and arranged vertically and scissor-like tig symmetrical with respect to the reference plane for the measurement solution, and being suitable for the pairs of pins are synchronous in response to a stop signal Stop operation.
Developments of the spectacle frame scanning according to the invention and measuring device are specified in the subclaims give.
The invention is described below with reference to some preferred embodiments from the same with reference to Figures 1 to 18 of the drawing and explained; show it:
Fig. 1 is a perspective view of the general construction of an eyeglass frame scanning and measuring device in a lens polishing and / or grinding machine according to an embodiment of the present invention;
.. Share Figure 2 is a perspective view of a measuring section for measuring the configuration of the lens frame and template, gauges, models or the like in a device according to an embodiment of the invention.
Fig. 3 is an illustration of a frame holding section 2000 A in a device according to an embodiment of the invention;
Fig. 4 is a diagram illustrating the operation of a wire, cable, rope or the like. 2004 in an embodiment of a device according to the invention;
Fig. 5 is a diagram illustrating the operation of wires, cables, ropes or the like. 2146 and 2149 in an embodiment of a device according to the invention;
Fig. 6 is a diagram illustrating a fastening mechanism on the side of an upper slide in a device according to an embodiment of the invention;
Fig. 7 is a diagram illustrating a fastening mechanism on the side of a lower slide in one embodiment of a device according to the invention;
Fig. 8 is a diagram illustrating the operation of a wire, cable, rope or the like. 2246 in a device according to an embodiment of the inven tion;
Fig. 9 is a perspective view o the like -halteabschnitts 2000 B a structure of a stencil, Gauge, model in a device according to an embodiment of the invention illustrated..;
FIG. 10 is a plan view of the measuring section a Einrich processing according to an embodiment of the invention;
Fig. 11 is a sectional view of a section along the Li never XI-XI of Fig. 10;
Fig. 12 is a sectional view of a section along the Li never XII-XII of Fig. 10;
Fig. 13 is a sectional view of a section along the Li never XIII-XIII of Fig. 10;
Figs. 14 and 15 diagrams showing the Vertikalbewe supply of a measuring head in a device according to an embodiment of the invention, illustrate;
FIG. 16 is a diagram showing management form a coordinate Trans formation in a device according to a from of the invention illustrated;
Figure 17 is an illustration showing another method for obtaining the distance between the centers of geometric standpoint of the spectacle frame in a direction A in accordance with an embodiment of OF INVENTION illustrates dung. and
Fig. 18, one embodiment of the invention it is applicable a diagram illustrating an adjustment amount-Be calculation method in a device according to.
There are now embodiments of the present invention with reference to the figures of the drawing in more detail Details described and explained:
(1) General structure of an eyeglass polishing and / or grinding machine
Fig. 1 is a perspective view showing the general structure of an eyeglass polishing and / or grinding machine according to an embodiment of the present invention.
With the reference numeral 1 is a machine base on which the components of the lens polishing and / or grinding machine are arranged.
Reference number 2 is a template, gauge, Model or the like net that in the upper section of the polishing and / or Grinding machine is arranged.
In front of the measuring device 2 are a visual reproduction section 3 , through which measurement results, calculation results etc. in the form of characters, such as letters, numbers or the like, and / or graphics are reproduced in visual reproduction, and an input section 4 , above which data is entered or commands are given to the device.
In the front section of the polishing and / or grinding machine a Linsenkonfigurationsmeßein direction 5 for measuring the ideal edge thickness etc. of an unprocessed or unprocessed lens is provided.
Reference numeral 6 is assigned to a lens polishing and / or grinding section, in which a grinding wheel 60 is rotatably mounted, and / or on a rotating shaft 61 , which is fastened to the base 1 by means of clamps 62 , the grinding wheel 60 being made of a rough grinding wheel 60 a for glass lenses and a rough grinding wheel 60 b for plastic lenses.
At one end of the rotatable shaft 61 , a belt pulley 63 is attached, which is connected by a belt 64 to a pulley 66 , which in turn is brought to the rotating shaft of an AC motor 65 . Accordingly, rotation of the motor 65 causes the grinding wheel 60 to rotate.
Reference number 7 denotes a drive section and 700 is a run work, a sledge, a carriage, a bracket or the like.
Finally, with the reference numeral 8 is a V-groove Be Working section denotes where a V-groove machining processing and flat machining.
(2) lens frame part and template, gauge, model or the like Sampling or measuring section (a) Structure
The construction of an embodiment of a lens frame part and stencil, gauge, model or the like configuration configuration measuring section 2 will now be described with reference to FIGS . 2 to 13.
FIG. 2 is a perspective view showing a lens frame part and stencil, gauge, model or the like configuration measuring section according to this embodiment. This section is built into the main part of the lens polishing and / or grinding machine and is generally composed of two sections: a frame and template, gauge, model or the like holding section 2000 for holding a frame and for holding of stencils, gauges, model len or the like, and from a measuring section 2500 for performing digital measurements of the configurations of the lens frame parts in the frame and the stencils, gauges, models or the like. The frame and stencils, gauges, The model or the like holding section 2000 is further divided into two sections: a frame holding section 2000 A and a template, gauge, model or the like holding section 2000 B.
Rack holding section
FIGS. 3 to 8 show the structure of Gestellhal teabschnitts 2000 A.
Reference is first made to Fig. 3, according to which the central geometric centers of a pair of lens frame parts when the frame is inserted into the frame holding section 2000 A are set as reference points OR and OL, and the straight line which these two Dots connecting and shown in Fig. 3 as a dash-dotted line is considered as a reference line. Furthermore, the or a plane at a certain height, measured from the surface of a box, housing, container or the like belonging to the frame holding section 2000 A, is used as the reference plane for the measurements.
An upper slider section 2100 and a lower slider section 2200 are arranged and arranged in such a manner that they are mounted along a guide shaft 2002 attached to the box 2001 and a guide rail 2005 , which has a hexagonal cross-sectional configuration, and is rotatably supported on or on the box 2001 is slidable. The upper portion of a wire, cable, rope or the like 2004 , which is stretched between sheaves 2003 a and 2003 b, which are rotatably fastened to the box 2001 , is fixedly attached to a pin, projection or the like 2150 , which is provided on the upper slide section 2100 , in particular in the upper slide section 2100 , and the lower section of the wire, cable, rope or the like. 2004 is firmly attached to a pin, projection or the like. 2250 which is provided on the lower slide section 2200 , in particular in this slide section in particular, whereby these slide sections are enabled to perform opposite displacement movements symmetrically with respect to the reference line (as shown in FIG. 4, more precisely, the pin 2150 of the upper slide section 2100 attached to the two of the pulleys 2003a and b 2,003 tensioned wire cable, rope o. the like. in 2004, at the left, top, while the pin 2250 at the bottom right, n part of this wire, cable, rope or the like is fastened in 2004 , so that as a result the two slide sections 2100 and 2200 move in opposite directions with respect to the reference line when the sheaves 2003 a and 2003 b are rotated.
A gear wheel 2011 is attached to the rotating shaft of a motor 2010 attached to the box 2001 , which is referred to here as a clamping motor. This gear 2011 meshes via an idle or intermediate gear 2015 with a gear 2006 , which is formed or attached to one end of the guide shaft 2005 , where the rotation of the clamping motor 2010 is transmitted to the guide shaft 2005 .
On the back of the box 2001 , a shaft 2020 is rotatably supported, and a pin 2021 , which is inserted into or otherwise attached to one of the end portions of the shaft 2020 , is ge against a recess by means of a leaf spring 2024 attached to the box 2001 2013 a cam 2012 , which is arranged or formed in the middle section of the gear 2011 , held in contact. At the other end of the shaft 2020 , a brake arm 2022 is attached to which a brake rubber part 2023 is attached. This brake rubber part 2023 is exposed to the outside through a hole 2025 of the box 2001 .
When the cam 2012 is rotated by the clamp motor 2010 , the pin 2021 , which has been held against the recess 2013, is pressurized by a projection 2014 of the cam 2012 , and the shaft 2020 rotates, whereby The brake rubber part 2023 , which is attached to the brake arm 2022, is held or pressed against the rear surface of the upper slide section 2100 .
An upper center clamp 2110 is slidably disposed on shafts 2102 and 2103 which are mounted on the base 2101 of the upper slide section 2100 . Correspondingly, a right clamp 2120 is slidably mounted on shafts 2104 and 2105 , and a left clamp 2130 on shafts 2106 and 2107 .
Shafts 2111 a, 2111 b, 2111 c and 2111 d are rotatably supported by means of the upper middle clamp 2110 . On each of the shafts 2111 a and 2111 b, a gear 2112 a and 2112 b is rotatably attached, and on each of these water gears one end of an arm 2113 a and 2113 b is attached. At each of the other ends of the arms 2113 a and 2113 b, a clamping pin 2114 a or 2114 b is attached.
On the shafts 2111 c and 2111 d, gear wheels 2112 c and 2112 d are rotatably mounted, on each of which one end of an arm 2113 c and 2113 d is attached. Clamping pins 2114 c and 2114 d are attached to the other ends of the arms 2113 c and 2113 d.
Furthermore, other gears 2115 c and 2115 d are rotatably attached to the shafts 2111 c and 2111 d, which are integrally connected to the gears 2112 c and 2112 d by the interposition of torsion coil springs 2116 c and 2116 d.
In the above arrangement, the gears 2112 a, 2112 b and 2115 c mesh with the gears 2112 c, 2112 d and 2115 d, respectively. Rotating the gear 2115 d causes the two pairs of opposing clamping pins: 2114 a and 2114 c; or 2114 b and 2114 d make opposite rotations symmetrically with respect to the reference plane for the measurement.
Furthermore, rack holders 2117 a and 2117 b are located at each end of the upper middle clamp 2110 at positions in close proximity to the pairs of clamping pins: 2114 a and 2114 c; and 2114 b and 2114 d, as well as perpendicular to the reference plane for the measurement. A projection 2118 is provided in the upper part of the upper middle clamp 2110 .
Holes 2119 a and 2119 b are arranged on each side of the upper middle clamp 2110 and are formed in the base 2101 .
Shafts 2121 a and 2121 b are rotatably supported by the right clamp 2120 , and on the shaft 2121 a, a gear 2122 a is rotatably attached, to which one end of an arm 2123 a is fixed, and further is at the other end of the Arms 2123 a attached a pin 2124 a.
On the shaft 2121 b, a gear 2122 b is rotatably attached to which one end of an arm 2123 b is firmly attached, and at the other end of the arm 2123 b, a clamping pin 2124 b is attached.
Further, another gear on the shaft is rotatably mounted in 2121 b 2125 which is connected through the interposition of a torsion coil spring 2126 b integrally with the gear 2122nd
In the above arrangement, the gears 2122 a and 2122 b mesh with each other, and rotating the gear 2125 causes the clamping pins 2224 a and 2224 b to perform opposite rotations symmetrically with respect to the reference plane for the measurement.
Furthermore, a rack holder 2127 is attached to the right clamp 2120 in a position in close proximity to the clamping pins 2124 a and 2124 b and perpendicular to the reference plane for the measurement. A projection 2128 a is provided in the upper part of the right clamp 2120 .
Shafts 2131 a and 2131 b are rotatably supported by means of the left clamp 2130 . On the shaft 2131 a, a gear 2132 a (not shown) is rotatably attached, to which one end of an arm 2133 is fixedly attached, while at the other end of the arm 2133 a, a clamping pin 2134 a is attached.
On the shaft 2131 b, a gear 2132 b (not shown) is rotatably attached, to which one end of an arm 2133 b is fixedly attached, while a clamping pin 2134 b is attached to the other end of the arm 2133 b.
In addition, on the shaft 2131 b another gear 2135 (not shown) is rotatably mounted, which is integrally connected to the gear 2132 b by the interposition of a torsion coil spring 2136 (not shown).
In the above arrangement, the gears 2132 a and 2132 b mesh with each other, and rotating the gear 2135 causes the clamping pins 2134 a and 2134 b to perform opposite rotations symmetrically with respect to the reference plane for the measurement.
Further, a rack holder 2137 is attached to the left clamp 2130 in a position in close proximity to the clamping pins 2134 a and 2134 b and perpendicular to the reference plane for measurement, and a projection 2138 is provided in the upper part of the left clamp 2130 .
A gear 2141 a and a pulley 2143 a are attached in tegral to a shaft 2141 a which is rotatably supported by means of the base 2101 of the upper slide section 2100 , the gear 2142 a meshing with the gear 2115 d. Correspondingly, gears 2142 b and 2142 c and sheaves 2143 b and 2143 c are integrally attached to a shaft 2141 b and a shaft 2141 c (not shown), the gears 2142 b and 2142 c each with the gears 2125 and Comb 2135 .
In addition, the gears 2142 a, 2142 b and 2142 c in the axial direction are sufficiently long and capable, constant or permanent with the gears 2115 d, 2125 and 2135 within the displacement range of the upper middle clamp 2110 , the right clamp 2120 and the left clamp Comb 2130 .
A hexagonal shaft hole of a holder 2144 , which is rotatably supported by the base 2101 of the upper slider portion 2100 , is engaged with the guide rail 2005 , thereby preventing the holder 2144 from rotating around the guide rail 2005 .
A pulley 2145 is placed on the holder 2144 or formed.
A wire, cable, rope or the like 2146 , which is attached at one end to the pulley 2145 runs around the pulleys 2143 c and 2143 a, the other end of the wire, cable, rope or the like. The like 2146 is hooked around a pin 2148 , which is inserted into the base 2101 or is otherwise attached thereto, with the interposition of a spring 2147 .
A wire, cable, rope or the like 2149 is stretched between the pulleys 2143 a and 2143 b in such a way that it or it intersects diagonally (see FIG. 5).
In the above-described structure of the upper slide portion 2100 , the rotation of the clamp motor 2010 is transmitted to the guide shaft 2005 , and when the pulley 2145 attached or formed on the holder 2144 rotates, the gears 2142 a, 2142 b rotate and 2142 c through the wires, cables, ropes or the like. 2146 and 2149 , where all clamping pins are pairs: 2114 a and 2114 c; 2114 b and 2114 d; 2124 a and 2124 b; and 2134 a and 2134 b perform opposite rotations symmetrically with respect to the reference plane for the measurement.
Shafts 2111 a, 2111 b, 2111 c and 2111 d are rotatably supported by means of the lower middle clamp 2210 , which is brought to the base 2201 of the lower slide section. On the shafts 2211 a and 2211 b each gears 2212 a and 2212 b are rotatably mounted, on which one end of an arm 2213 a or one end of an arm 2213 b is fixed, and clamping pins 2214 a and 2214 b are on the respective other ends of the arms 2213 a and 2213 b attached. On the shafts 2211 c and 2211 d, gears 2212 c and 2212 d are rotatably attached, to which one end of an arm 2213 c and one end of an arm 2213 d are fixedly attached, and clamping pins 2214 c and 2214 d are on the respective ones other ends of the arms 2213 c and 2213 d attached.
In addition, on the shafts 2211 c and 2211 d other gears 2215 c and 2215 d are rotatably mounted, which are integrally connected to the gears 2212 c and 2212 d by the interposition of torsion coil springs 2216 c and 2216 d (not shown).
The torsion coil springs 2116 c, 2116 d, 2126 , 2136 , 2216 c and 2216 d are provided with a view to protecting the eyeglass frame from being damaged when it is jammed.
In the above arrangement, the gears 2212 a, 2212 b and 2215 c mesh with the gears 2212 c, 2212 d and 2215 d, respectively, and rotation of the gear 2215 c causes the clamping pin pairs: 2214 a and 2214 c; and 2214 b and 2214 d perform opposite rotations symmetrically with respect to the reference plane for the measurement.
Next, a rack holder 2219 a is provided, which has mounting holes 2220 a, and a rack holder 2219 b, which has mounting holes 2220 b, and these rack holders 2219 a and 2219 b are provided or trained on the base 2201 in such a manner det that they are parallel to the reference line.
A hexagonal shaft hole of a holder 2221 rotatably supported by the base 2201 of the lower slider portion is engaged with the guide rail 2005 , thereby preventing the holder 2221 from rotating about the guide rail 2005 .
A pulley 2222 is hen or formed on the holder 2221 .
One end of a wire, cable, rope or the like 2223 is fixedly attached to the pulley 2222 , while the other end thereof is fixedly attached to a pulley 2218 provided or formed on the gear 2215c .
A pulley 2233 is provided or formed in the lower portion of a gear 2232 which is rotatably supported by a pin 2231 , the pin 2231 being inserted or attached to an arm 2230 , which arm 2230 is based on the base 2201 of the the lower slide section 2200 forms out or is attached. A wire, cable, rope or the like. 2234 , which is fixed at one end to a pulley 2217 provided or formed on the gear 2212 a, is wound around a pulley 2233 , the other end of the wire, Cable, rope or the like. 2234 is hooked around a pin 2236 , which is inserted into the arm 2230 or attached to it in some other way, with the interposition of a spring 2235 .
Next, a potentiometer 2237 is attached to the arm 2230 , on the rotating shaft of which a gear 2238 is firmly attached.
This gear 2238 meshes with the gear 2232 and is able to transmit the amount of movement of the clamping pin 2214 a through the wire, the cable, the rope or the like. 2234 to the potentiometer 2237 .
Shafts 2241 a and 2241 b are attached to the base 2201 of the lower slide section 2200 , on which a left slide 2242 a and a right slide 2242 b are slidably placed.
A left frame pressurizing member 2244 a, which has a cylindrical configuration, is attached to the head end of an arm 2243 a, which extends from the left slider 2242 a, in such a position that it is perpendicular to the reference plane for measurement and, correspondingly, a right rack pressurizing member 2244 b, which has a cylindrical configuration, is attached to the head end or free end of an arm 2243 b extending from the right slider 2242 b in such a position that it is vertical to the reference level for the measurement.
The lower portion of a wire, cable, rope or the like. 2246 , which is stretched between the pulleys 2245 a and 2245 b, which are rotatably fastened to the base 2201 , is firmly attached to a pin 2247 a, which is in the left slider 2242 a inserted or attached to this slider in any other way, and the upper portion of the wire, cable, rope or the like. 2246 is firmly attached to a pin 2247 b, which is inserted in the right slider 2242 b or in is otherwise attached to this slide, whereby a counter-displacement movement symmetrical with respect to the center line connecting the points OR and OL can be generated. The two ends of a spring 2248 are fixedly attached to the left and right sliders 2242 a and 2242 b, respectively, whereby these sliders are constantly or permanently drawn toward the center.
Although in this embodiment the left and right sliders 2242 a and 2242 b are constantly drawn toward the center by means of the spring 2248 , the invention is not restricted to this type of construction.
For example, the positional adjustment of the left and right sliders 2242 a and 2242 b can also be brought about by the fact that the pulleys 2245 a and 2245 b are driven by a motor (not shown).
By means of the box or the like 2001 , a drum 2261 is rotatably mounted, around which a spring 2262 of constant torque is wound. One end of this constant torque spring 2262 is fixedly attached to an arm 2240 which is attached or formed on the base 2201 of the lower slide section 2200 , whereby the upper and lower slide 2100 and 2200 are constantly or permanently biased towards the center are.
Stencil, gauge, model or the like holding section
The Fig. 9 shows the structure of an embodiment ei nes stencil, Gauge, Model o. The like. -Halteabschnitts 2000 B.
The template, gauge, model or the like holding section 2000 B has a mounting plate 2301 , which has bent ends at its ends, in which pins 2302 , 2303 a and 2303 b are used or to which these pins are attached in some other way with a template, gauge, model or the like holder 2304 fixedly attached to approximately the center of the mounting plate 2301 .
In the template, gauge, model or the like holder 2304 , pins 2305 a and 2305 b are inserted, which are brought into engagement with holes which are in a template, a gauge, a model, a fitting gauge, a fitting , a shape or the like are formed, which is fastened to the template, gauge, model or the like holder 2304 by means of a fastening screw 2306 .
When the pin 2302 of the mounting plate 2301 , on which a template, a gauge, a model, a passport teach, a fitting, a mold or the like (for this purpose, the abbreviation "template or the like" is also used below) has been inserted into the hole 2119 a of the upper slide section 2100 , and the pins 2303 a and 2303 b of this mounting plate 2301 are inserted into the holes 2220 a, which are formed in the frame 2210 a of the lower slide section 2200 , the attachment plate is attached between the upper and lower slide sections 2100 and 2200 . In this state, the center of the template, gauge, model or the like holder 2304 is positioned at the point OL.
When the mounting plate 2301 has been fixed between the upper and lower slide sections 2100 and 2200 , an arched or bent section 2239 , which is formed on the arm 2230 of the lower slide section 2200 , comes into contact with a microswitch 2263 , which is on the box 2001 is attached, so that it is possible to confirm that the attachment or attachment of the template or the like is confirmed.
In a corresponding manner, when the pin 2302 of the mounting plate 2301 , to which a template or the like has been attached, is inserted into the hole 2119 b of the upper slide section 2100 , and the pins 2303 a and 2303 b of this mounting plate 2301 into the Holes 2220 are inserted, which are formed in the frame support 2219 b of the lower slide section 2200 , the fastening plate between the upper and lower slide section 2100 and 2200 attached. In this state, the center of the template, teaching, model or the like holder 2304 is positioned at the point OR.
Measuring section or measuring section
Next, the structure of the measurement section 2500 will be described with reference to FIGS. 10 to 13. Fig. 10 is a plan view of the measurement section, while Figs. 11, 12 and 13 are sectional views of a respective section taken along lines XI-XI, XII-XII and XIII-XIII of Fig. 10.
A movable base 2501 , the shaft holes 2502 a, 2502 b and 2502 c, is held by means of shafts 2503 a and 2503 b, which are attached to the box 2001 , slidably. Furthermore, a lever 2504 is inserted into the movable base 2501 or is otherwise attached to this movable base, by means of which the movable base 2501 can be displaced, so that the center of rotation of a rotatable base 2505 to or into the positions OR and OL thereby can be brought on the Ge holding section 2000 A. The rotatable base 2505 on which a pulley 2506 is attached or formed is rotatably supported by the movable base 2501 . A belt 2509 is tensioned between the pulley 2506 and a pulley 2508 , which is attached to the rotary shaft of a stepping motor 2507 fastened to the movable base 2501 , by means of which the rotation of the stepping motor 2507 is transmitted to the rotatable base 2505 .
As shown in Fig. 12, four rails 2510 a, 2510 b, 2510 c and 2510 d are attached to the rotating base 2505 . A surveying or measuring head section 2520 is slidably mounted on the rails 2510 a and 2510 b. In this measuring head section 2520 , a vertical shaft hole 2521 is formed, into which a measuring head shaft 2522 is inserted.
A ball bearing 2523 is provided between the measuring head shaft 2522 and the shaft hole 2521 , whereby the vertical movement and the rotation of the measuring head shaft 2522 are made smooth, smooth and smooth. At the upper end of the measuring head shaft 2522 , an arm 2524 is attached, and by means of the upper section of this arm 2524 , an abacus-bead-like V measuring head 2525 is rotatably supported, which is suitable for abutting against the V-shaped groove of the Linsenge control parts brought and / or to be held.
Although in this embodiment an abacus bead type V measuring head or V measuring head 2525 is provided rotatably supported, the invention is in no way limited to such a structure. The V-Meß head 2525 can also be non-rotatable, and as long as its head, edge or tip section is shaped like an abacus bead, its configuration need not necessarily be disk-like.
A cylindrical stencil, gauge, model or the like measuring roller or measuring roller 2526 (the term "stencil, gauge, model or the like" as used here in the context of the description and the claims, should, alone or in word combinations, include in particular the terms "pass gauge, template, teaching, shaped piece, shape, model or the like", which is suitable for being brought into contact with and / or held against the edge of a template or the like to who is rotatably supported by means of the lower portion of the arm 2524 . The outer peripheral surface of the V-measuring head 2525 and the stencil, gauge, model or the like. Measuring roller 2526 are arranged in the center line of the measuring head shaft 2522 .
In a position below the measuring head shaft 2522 or, as shown in Fig. 11, above the measuring head shaft 2522 , a pin 2528 is inserted into a ring 2527 or otherwise fastened to this ring, which in turn is rotatably mounted on the measuring head shaft 2522 , The movement of this pin 2528 in the direction of rotation is restricted by an elongated hole 2529 , which is ausgebil det in the measuring head portion 2520 . At the tip, edge or head end of the pin 2528 , the movable portion of a potentiometer 2530 is attached, and the amount of movement of the measuring head shaft 2522 in the vertical direction is detected by means of this potentiometer 2530 .
A roller 2531 is rotatably supported by the lower end portion of the measuring head portion 2522 .
A pin 2533 is inserted into the measuring head section 2520 or otherwise attached to the measuring head section 2520 , and a pulley 2535 is attached to the shaft of a potentiometer 2534 , which in turn is attached to the rotatable base 2505 . By means of the rotatable base 2505 , rope sheaves 2536 a and 2536 b are rotatably supported, and a wire, cable, rope or the like. 2537 , which is attached to the pin 2533 , is between these rope sheaves 2536 a and 2536 b tensioned and wrapped around the pulley 2535 . Accordingly, the amount of movement of the measuring head section 2520 is detected by the potentiometer 2534 .
Further, a constant torque spring 2540 , which is adapted to constantly or permanently pull the measuring head portion 2520 toward the extreme end or head side of the arm 2524 , is attached to a drum 2541 , which is rotatable by means of the rotatable base 2505 is held, wherein one end of the Kon constant torque spring 2540 is fixedly attached to a pin 2542, which is inserted into the measuring head section 2520 or otherwise secured to the measuring head section.
On the rails 2510 c and 2510 d of the rotating base 2505 , a measuring head drive section 2550 is slidably mounted, into which a pin 2551 is inserted or to which this pin is attached in some other way, and a pulley 2553 is attached to the rotating shaft of a motor 2552 , which in turn is attached to the rotatable base 2505 . Rope sheaves 2554 a and 2554 b are rotatably supported by means of the rotating base 2505 , and a wire, cable, rope or the like. 2555 , which is attached to a pin 2551 , is between these sheaves 2554 a and 2554 b tensioned and around the pulley 2553 , whereby the rotation of the motor 2552 is transmitted to the measuring head drive section 2550 .
The measuring head drive section 2550 bears against the measuring head section 2520 , which is driven after the measuring head drive section 2550 by means of the constant torque spring 2540 , and by moving the measuring head drive section 2550 , the measuring head section 2520 can be moved to a predetermined position.
Furthermore, a shaft 2556 is rotatably supported by means of the measuring head drive section 2550 , and one end of this shaft 2556 has an arm 2557 (see in particular FIG. 13) which bears against the roller 2531 (see in particular FIG. 11), which is by means of the lower one End portion of the measuring head portion 2522 is rotatably supported, while the other end of the shaft 2556 is attached to an arm 2558 which rotatably holds a roller 2559 . One end of a Torsionspiral- or -schraubenfeder 2561 is hooked in such a manner to the arm 2557, or engages in such a manner to the arm 2557 in that the roller comes into abutment against a stationary guide plate 2560 2559 which firmly to the rotatable base 2505 is placed, and the other end of this Torsionsspiral- or -schraubenfeder 2566 is fixed section at the Meßkopfab mounted 2550, so that the roller 2559, when the Meßkopfantriebsabschnitt be moved 2550, in the vertical direction of the guide plate along 2560 emotional.
The vertical movement of the roller 2559 causes the shaft 2556 to rotate, and the arm 2557 fixedly attached to the shaft 2556 also rotates about the shaft 2556 , causing the measuring head portion 2522 to move in the vertical direction. On the rotatable base 2505 , a shaft 2563 is rotatably mounted, on which in turn a movable guide plate 2561 is fixedly attached. One end of the slidable shaft of a solenoid 2564 , which is mounted on the rotatable base 2505 , is attached to a movable guide plate 2562 . Furthermore, 2565 hooked on the rotatable base 2505, or attached in some other way, one end of a spring while the other end thereof on the movable guide plate is hooked 2562 attached in any other way so that they 2562 normally pulls the guide plate to a position where whose guide section does not abut the roller 2559 . When the solenoid 2564 is operated to pull the movable guide plate 2562 upward, the guide portion of this movable guide plate 2562 moves to a position where it is parallel to the stationary guide plate 2560 , thereby enabling the roller 2559 in System to come against the guide section and move along the guide plate 2562 .
(b) Function and mode of operation
Next, the operation and operation of the above-described lens frame part and template, gauge, model or the like configuration measuring device 2 will be described with reference to FIGS. 2 to 18.
Measurement or measurement of the lens frame part configuration ration
First of all, the mode of operation of measuring one Glasses frame described.
For the measurement, either the left or the right lens frame part of the eyeglass frame 500 is selected, and the measurement or measurement section 2500 is moved to the measurement side by means of the lever 2504 which is fixedly attached to the movable base 2501 .
The rack holding section of the present device is capable of holding horizontally and one Hold lens frame part of the frame. Below the horizontal holding process is described.
By pulling the protrusion 2118 formed on the upper middle clamp 2110 of the upper slider portion 2100 and pushing the protrusions 2128 and 2138 of the right and left clamps 2120 and 2130 inward, only the rack brackets 2117 a and 2117 b and the clamping pins 2114 a, 2114 b, 2114 c and 2114 d of the upper middle clamp 2110 set ready for use, whereas the frame holder or carrier 2127 and the clamping pins 2124 a and 2124 b of the carrier 2127 and the clamping pins 2124 a and 2124 b the right clamp 2120 as well as the rack holder or support 2137 and the clamping pins 2134 a and 2134 b on the left clamp 2130 remain inside. In this state, the opening degree of the clamping pins has its maximum value.
Next, the right and left frame pressurizing members 2244 a and 2244 b are moved away from each other, and at the same time, the lower slide section 2200 is pulled so that the distance between the upper and lower slide sections is increased to a sufficient degree. The upper sections of the eyeglass frame are between the Klemmstiftpaa: 2114 a and 2114 c; as well as 2114 b and 2114 d of the upper slide section 2100 and brought or held against the frame holder or carrier 2117 a and 2117 b. Then the distance between the upper and lower slide sections 2100 and 2200 is reduced, the lower frame sections between the pairs of clamping pins: 2214 a and 2214 c; and 2214 b and 2214 d of the lower slide section 2200 are positioned and brought into abutment against the frame holders or supports 2219 a and 2219 . Thereafter, the distance between the right and left frame pressurizing parts 2244 a and 2244 b is reduced, being brought into abutment against the sides of the glasses frame.
In this embodiment, the constant torque spring 2262 and the spring 2248 constantly and permanently exert a centripetal force on the upper and lower slide sections 2100 and 2200 and the left and right frame pressurizing parts 2244 a and 2244 b upper and lower slide sections 2100 and 2200 as well as the left and right frame pressurization part 2244 a and 2244 b, the horizontal center of the frame can be held on or at the midpoint between the points OR and OL.
When a monitor or push button switch in the input section 4 is depressed with the position set in the manner described above, the brake rubber part 2023 comes into abutment against the rear surface of the upper slide section 2100 due to the action of the clamp motor 2010 , wherein the lower slide section 2200 is fixed and / or secured in position by the upper slide section 2100 and the wire or the like 2004 . Then the pairs of clamping pins: 2114 a and 2114 c; and 2114 b and 2114 d of the upper slide section 2100 and the pairs of clamping pins: 2214 a and 2214 c; as well as 2214 b and 2214 d of the lower slide section 2200 closed and brought into contact with the Ge stell. Next, when the clamping motor 2010 rotates, the pairs of clamping pins: 2114 a and 2114 c; 2114 b and 2114 d; 2214 a and 2214 c; and 2214 b and 2214 d due to the action of the torsion coil or coil springs 2116 c, 2116 d, 2216 c and 2216 d firmly pressed against the frame, so that the frame is secured or secured in position.
In the case of holding one lens frame part, for example holding the right lens frame part, the middle clamp 2110 and the right clamp 2120 of the upper slide section 2100 are pulled up, the right side of the frame using the clamping pins 2114 b and 2114 d of the upper one Middle clamp 2110 , the clamping pins 2124 a and 2124 b of the right clamp 2120 and the clamping pins 2214 b and 2214 d of the lower middle clamp 2210 of the lower slide section 2200 are fastened in position. In the case of holding the left frame part, the left clamp 2130 is used.
In Figs. 14 and 15, the roller is 2559 of Meßkopfantriebsabschnitts 2550 in the reference posi tion O, and the stepping motor 2507 is a vorbe voted angle rotated so that the swivel base is swiveled in such a way 2505 that the Direction of movement of the Meßkopfantriebsab section 2550 perpendicular to the reference line.
Subsequently, the guide portion of the movable guide plate 2562 is moved to a predetermined position by the solenoid 2564 , and the measuring head drive portion 2550 is moved in the direction of the lower slide portion 2200 . This causes the roller 2559 to move from the guide portion 2560 b of the stationary guide plate 2560 to the movable guide plate 2562 b, and probe shaft 2522 is raised by the arm 2557 , with the V-probe 2525 at the level of the reference plane for the Measurement is held.
Further, when the probe drive section 2550 is moved, the V probe 2525 is inserted into the V-groove of the lens frame part, and the probe section 2520 stops moving, and the probe drive section 2550 moves to FRL to stop there.
Subsequently, the stepping motor 2507 is rotated each time by means of a unit angular momentum number or by means of a unit angular rotation number that has been previously set. Now the measuring head section 2520 moves along the guide shafts 2510 a and 2510 b accordingly the radius vector of the lens frame part, where the amount of this movement is sensed by means of the potentiometer 2534 . The measuring head shaft 2522 moves up and down by following the curve of the lens frame part, the amount of this movement being sensed by means of the potentiometer 2530 . From the rotation angle θ of the stepping motor 2507 , the sensed amount r of the potentiometer 2534 and the sensed amount z of the potentiometer 2530 , the lens frame part configuration is measured as (rn, θn, zn) (n = 1, 2,..., N) . These measurement data (rn, θn, zn) (n = 1, 2,..., N) are subjected to a polar-orthogonal coordinate transformation, and from arbitrary four points (x1, y1, z1), (x2, y2, z2), (x3, y3, z3) and (x4, y4, z4) of the data (xn, yn, zn) obtained in this way, the frame curve or curvature and the frame curve or curvature center (xF, yF) are obtained , zF) (using the same formula as that used to obtain the lens curve or curvature).
Still referring to Figure 16 reference. Among the x- and y-components (xn, yn) of (xn, yn, zn) are a measuring point A (xa, ya) of the maximum value in the X-axis Direction, a measuring point B (xb, yb) which has the minimum value in the X-axis direction, a measuring point C (xc, yc) which has the maximum value in the Y-axis direction, and a measuring point D (xd, yd) that has the minimum value in the Y-axis direction is selected, and the geometric center OF (xF, yF) of the lens actuating part is obtained as:
From the distance L between the known frame center and the center of rotation O0 (x0, y0) of the measuring head section 2120 and the amount of deviation (Δx, Δy) between O0 and OF, 1/2 of the distance FPD between the geometric centers of the lens frame parts is obtained :
FPD / 2 = (L - Δx) = {L - (xF - X0)} (2)
Although in the process described above, FPD Aligning the rack center with the Furnishing center, it is also possible Lich, FPD by using a different rack holder to receive facility.
In Fig. 17, the reference symbol S denotes a pair of glasses, and the reference number 291 denotes frame holders which are suitable for carrying out opposite movement movements, holding the pair of glasses S between them. The reference character Chen 292 is assigned to a positioning pin of the measuring section, while the reference symbol 293 denotes a button or pin of the measuring section.
In order to obtain FPD in a rotating system, that lower groove portion of the lens frame part which is not to be scanned which is on the side of the nose is brought into abutment against the positioning pin 292 which is capable of being in the X-axis direction and the Z-axis direction (ie, the direction perpendicular to the plane of the drawing), with the glasses S biased in such a manner that the positioning pin 292 against the lower section of the groove comes closest to the nose. Then, while holding the frame by means of the frame holders 291 which are capable of shifting in opposition to each other, the lens frame part configuration (xn, yn, zn) (n = 1, 2,..., N) by means of the Measure the measuring section described above.
The distance between the position O of the positionie pins that are not in the X-axis direction changed, and the position where the size xn a maxi mum is can be obtained as FPD.
It is also possible to obtain FPD by bringing the positioning pin 292 into abutment against that part of the lens frame which is closest to the template or the like and to maintain the minimum value of xn. Further, the positioning pin 292 is not limited to the type used in the present embodiment. Any type of positioning pin that is capable of limiting in the X-axis direction, for example the probe or probe or pin of another measuring section, can serve this purpose. Next, the positioning pin 292 can be moved in the X-axis direction instead of the glasses S being biased.
In addition, FPD can also be obtained by one alternates the right and left lens frame part either feeling or missing or missing.
Next, from the mutual interpupillary distance PD or inter-interpupillary distance PD provided in the input section 4 , the inner adjustment amount I1 is obtained to:
Furthermore, on the basis of a preset upper setting amount U1, the position OS (xS, yS), where the optical center of the spectacle lens to be processed should be, is obtained as follows:
From this OS, the machining data (Srn, Sθn) (n = 1, 2,..., N) is obtained by transformation into polar coordinates, which have OS as the center, and the lens edge thickness is determined by means of an unprocessed lens configuration -Measuring section 5 measured or measured so that you get the V-groove curve or curve and the V-groove position.
The setting amount in the X-axis direction will now be explained with reference to FIG. 18. Assume that in a section in the X-axis direction, the V-groove tip positions are V1 (x1, z1) and V2 (x2, z2) and the center therebetween is OF '. Further, it is assumed that the central position of the front curved surface of the lens when fitted in the lens frame part is OL (xL, zL) and its radius is rL.
From the value in the X-axis direction of the intended PD position, xPD, and the equation which expresses the curve of the front surface (x - xL) 2 + (z - zL) 2 = rL 2 , the value of provided PD position in the Z-axis direction, zPD. The intersection of the straight line connecting the center OL (xL, zL) of the front surface curve and the PD position in the front surface of the lens, OPD (xPD, zPD), and the straight line connecting the V-groove - Peaks V1 (x1, z1) and V2 (x2, z2) connects is obtained as OPD '(xPD', zPD '), and the distance between the points OF' and OPD 'is used as the current setting amount in the X- Axis direction, I2, received.
Correspondingly, the setting amount in the Y-axis direction, U2, obtained, and based on I2 and U2 will be the position where the optical Zen of the lens to be machined should be 'OS' (xS ', yS'). From this OS 'the Bear processing data (Srn ', Sθn') (n = 1, 2,..., N) Transformation of (xn, yn) into polar coordinates, the have received the center of OS ', so that the V-groove curve or curvature and the V-groove position receives.
Although in this embodiment the PD value correction based on the measured lens configuration be is effective by looking at the frame curve or curvature and maintains the center of it is the present Invention in no way on this correction procedure ren limited. The correction can also be done in a simple way, for example there by measuring the PD value in proportion to the measured value its FPD value varies or changes, and further the Invoice lens configuration or in Be traditional clothes.
In the device according to this embodiment can the configuration measurement on each of the two lines scorch frame parts, namely the right and the left Lens frame part, run, or it can alternatively, they can only be carried out on one of them, with inverted data on the other lens frame part can be applied.
In the frame curve or curvature CF the angle, which is defined by the straight line which is the Frame curve or center of curvature (xF, yF, zF) and connects the point (xn, yn, zn) (n = 1, 2,..., N) and the straight line which the frame curve or - Center of curvature (xF, yF, zF) and the position of the optical center OS 'connects as a frame groove angle vθn (n = 1, 2,..., N) is obtained.
Stencils, gauges, models or the like. Confiqurations measurement
Next is the process of measuring the Scha blone or the like.
The pins 2305 a and 2305 b, which are inserted in the stencil, gauge, model or the like holder 2304 , which is firmly attached to substantially the central portion of the mounting plate 2301 , are engaged with holes, which are formed in a template or the like, which is attached to the template, teaching, model or the like holder 2304 by means of the fastening screw 2306 .
It is determined on which side the template or the like is to be attached, and by means of the lever 2504 which is fixedly attached to the rotatable base 2501 , the measuring section 2500 is moved to the side where the measurement is to be carried out.
In the case where the template or the like is attached to the left side, the pin 2302 of the mounting plate 2301 to which the template or the like is or is attached is inserted into the hole 2119 a of the upper slide section 2100 , and the pins 2303 a and 2303 b are inserted into the holes 2220 a, which are formed in the frame holder 2219 a of the lower slide section 2200 , so that the template or the like. In position between the upper and lower slide 2100 and 2200th is attached. In this state, the center of the template, gauge, model or the like holder 2304 is at the point OL and coincides with the center of rotation of the measuring head section 2520 , so that the geometric center of the template or the like the center of rotation of the measuring head section 2520 coincides. In the case where the template or the like is attached to the right side, the holes 2119 b and 2220 a are used to secure the template or the like in position between the upper and lower slides 2100 and 2200 .
When the key switch of the input section 4 is depressed with the template or the like set in the manner described above, the measuring head drive section 2550 remains in the reference position O and the rotatable base 2505 rotates to the position in which the direction of movement of the measuring head drive section 2550 and the straight line which connects the points OR and OL coincide with each other.
When the measuring head drive section 2550 moves in the direction opposite to that in the frame measurement, the roller 2559 moves from the guide section 2560 b to the guide section 2560 a of the stationary guide plate 2560 , and the measuring head shaft 2522 is attached by means of the arm 2557 lifted, the flange portion 2526 a of the template, gauge, model or the like. measuring roller or measuring roller 2526 is kept at a level which is higher by a certain or certain amount than the upper surface of the template or . Like.
After the Meßkopfantriebsabschnitt 2550 has been moved to OL, the movable guide plate 2562 is moved to a predetermined sition Po by means of the solenoid 2564, causing or wherein the Meßkopfantriebsabschnitt is brought back to the reference position O 2550th Now there is the guide portion 2560 a of the stationary guide plate 2560 at the same level as the guide portion 2562 a of the movable guide plate 2562, so that the stencil, Leh pension, Model o. The like. -Vermessungsrolle 2526 moved until it in System against the stencil or the like comes while it maintains a certain or predetermined level.
Subsequently, the stepper motor 2507 is rotated each time by a unit angular pulse number that has been previously set. Now the measuring head section 2520 moves along the guide shafts 2510 a and 2510 b according to the radius vector of the template or the like, the amount of this movement being sensed by means of the potentiometer 2534 .
From the angle of rotation θ of the stepping motor 2507 and the sensed amount r of the potentiometer 2534 , the configuration of the template or the like is measured as (rn, θn) (n = 1, 2,..., N).
This measurement data is subjected to a polar-orthogonal coordinate transformation, and from the data (xn, yn) thus obtained, a measurement point A (xa, ya) having the maximum value in the X-axis direction becomes a measurement point B. (xb, yb), which has the minimum value in the X-axis direction, a measuring point C (xc, yc), which has the maximum value in the Y-axis direction, and a measuring point D (xd, yd), which has the minimum value in the Y-axis direction. The geometric center OF (xF, yF) of the lens frame part is obtained as follows:
From the distance L between the known frame center and the center of rotation O0 (x0, y0) of the measuring head section 2120 and the amount of deviation (Δx, Δy) between O0 and OF, 1/2 of the distance FPD between the geometric centers of the lens frame parts will be maintained to:
FPD / 2 = (L - Δx) = {L - (xF - X0)} (2) '
Next, from the mutual interpupillary distance or inter-interpupillary distance PD provided in the input section 4 described above, the inner adjustment amount I is obtained to:
I = FPD / 2 - PD / 2 = {L - (xF - x0) - PD / 2} (3) '
Furthermore, on the basis of a preset upper adjustment amount U, the position where the optical center of the spectacle lens to be machined should be, the point OS (xS, yS) is obtained as follows:
From this OS, the processing data (Srn, Sθn) (n = 1, 2,..., N) are obtained by transforming (xn, yn) into polar coordinates, which have OS as the center, and the lens edge thickness is determined by means of the Measurement section 4 for the configuration of the non-machined lens measured or measured, so that one holds the V-groove curve or curvature and the V-groove position.
With the eyeglass frame scanning or measurement direction of the lens polishing and / or grinding device according to the present invention Glasses frame with ease and accuracy in Po sition are attached when the scanning or ver measure the same, so that on this Way a significant improvement in the handha exercise and operational performance is achieved.
With the invention, a spectacle frame scanning or -measuring facility provided before preferably in an eyeglass lens polishing and / or grinding machine is provided. This facility has the purpose Get machining data to fit the lenses in an eyeglass frame. These glasses Setting scanning or measuring device comprises the following: a holding device for guiding the eyeglass frame in the Vertical direction to a predetermined position while she holds the eyeglass frame in a sandwich manner; and a positioning device for guiding the horizontal Center of the eyeglass frame to a predetermined position tion, while pressure on the horizontal outer ends of the Glasses frame applied to the middle part of the same becomes.
An eyeglass frame sensing and measuring device ( 2 ) for measuring the configuration of an eyeglass frame ( 500 ) by inserting a measuring head ( 2525 ) into a V-groove of the glasses frame and by measuring the amount of movement of the measuring head ( 2525 ), comprising:
a) a measuring head holding device ( 2520 , 2522 , 2524 ) for movably holding the measuring head ( 2525 ) in the direction of the respective radius vector (r n , r a , r b , r c , r d ) of the spectacle frame ( 500 ) and in a direction perpendicular to the radius vector;
b) a measuring device ( 2530 , 2534 , 2507 ) for measuring the movement of the measuring head holding device so that the three-dimensional configuration of the spectacle frame ( 500 ) is obtained;
c) a pair of frame holders ( 2100 , 2200 ) which abut the spectacle frame ( 500 ), the frame holders ( 2100 , 2200 ) being displaceable such that they position the spectacle frame ( 500 ) in the direction of the radius vector; and
d) a holding device ( 2110 , 2120 , 2130 , 2210 ) for holding the eyeglass frame ( 500 ) in an interposed and / or pinched manner, or in a sandwich manner, the holding device being at least four pairs of pins ( 2114 a - 2114 d, 2124 a, 2124 b, 2134 a, 2134 b, 2214 a - 2214 d) and the right and left glasses frame part by means of the pairs of pins in a substantially horizontal symmetrical height with respect to the Measuring head ( 2525 ) holds, the pairs of pins ( 2114 a - 2114 d, 2124 a, 2124 b, 2134 a, 2134 b, 2214 a - 2214 d) are arranged sideways from the spectacle frame ( 500 ) and are vertical and scissor-like close symmetrically with respect to the reference plane for the measurement, and the pairs of pins ( 2114 a- 2114 d, 2124 a, 2124 b, 2134 a, 2134 b, 2214 a- 2214 d) are suitable in synchronism in response to a stop signal to perform a hold.
2. eyeglass frame scanning and measuring device according to claim 1, characterized by a calculation device for calculating the distance between the geometric center (OR, OL) of the right and left eyeglass frame part on the basis of the data on the configuration of the eyeglass frame ( 500 ) which have been measured using the measuring device ( 2530 , 2534 , 2507 ).
3. eyeglass frame scanning and measuring device according to claim 1 or 2, characterized by a pair of eyeglass frame pressurizing parts ( 2244 a, 2244 b) for pressing the right and left eyeglass frame parts to the same extent by opposite movement of each eyeglass frame pressurizing part ( 2244 a, 2244 b) .
DE19914115372 1990-08-02 1991-05-10 Spectacle frame scanning and measuring device Expired - Fee Related DE4115372C2 (en)
JP2205384A JP2925685B2 (en) 1990-08-02 1990-08-02 Frame shape measuring device
DE4115372A1 DE4115372A1 (en) 1992-02-06
DE4115372C2 true DE4115372C2 (en) 2001-11-29
ID=16505935
DE19914115372 Expired - Fee Related DE4115372C2 (en) 1990-08-02 1991-05-10 Spectacle frame scanning and measuring device
US (1) US5228242A (en)
JP (1) JP2925685B2 (en)
DE (1) DE4115372C2 (en)
FR (1) FR2665387B1 (en)
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JP2925685B2 (en) 1999-07-28
FR2665387B1 (en) 1995-12-01
FR2665387A1 (en) 1992-02-07
US5228242A (en) 1993-07-20
DE4115372A1 (en) 1992-02-06
JPH0493163A (en) 1992-03-25
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US6588898B2 (en) 2003-07-08 Apparatus for displaying lens contour, apparatus for processing lens contour data, and apparatus for grinding edge of eyeglass lens with the same
KR20070086736A (en) 2007-08-27 Device for automatically measuring characteristics of an ophthalmic lens
2000-08-24 8125 Change of the main classification
Ipc: B24B 9/14