Source: https://patents.google.com/patent/US8757920B2/en
Timestamp: 2020-01-22 02:32:47
Document Index: 687491119

Matched Legal Cases: ['art 23', 'art 23', 'art 23', 'art 23', 'art 23', 'art 23', 'art 34', 'art 23', 'art 23', 'art 23', 'art 23', 'art 23', 'art 23', 'art 23', 'art 23', 'art 23', 'art 23', 'art 21', 'art 23', 'art 21', 'art 21', 'art 21', 'art 23', 'art 23', 'art 23', 'art 23', 'art 23', 'art 34', 'art 23', 'art 23', 'art 23', 'art 43', 'art 43', 'art 43', 'art 43', 'art 53', 'art 53', 'art 53', 'art.\n1']

US8757920B2 - Positioning apparatus for positioning object, retainer and fastener thereof - Google Patents
Positioning apparatus for positioning object, retainer and fastener thereof Download PDF
US8757920B2
US8757920B2 US12/765,030 US76503010A US8757920B2 US 8757920 B2 US8757920 B2 US 8757920B2 US 76503010 A US76503010 A US 76503010A US 8757920 B2 US8757920 B2 US 8757920B2
US12/765,030
US20100272506A1 (en
Honma Seisakusho KK
2009-04-28 Priority to JP2009108634A priority Critical patent/JP5013134B2/en
2009-04-28 Priority to JPP2009-108634 priority
2010-04-22 Application filed by Honma Seisakusho KK filed Critical Honma Seisakusho KK
2010-04-22 Assigned to Kabushiki Kaisha Honma Seisakusho reassignment Kabushiki Kaisha Honma Seisakusho ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HONMA, KAZUO
2010-10-28 Publication of US20100272506A1 publication Critical patent/US20100272506A1/en
2014-06-24 Publication of US8757920B2 publication Critical patent/US8757920B2/en
The configuration of the pyramid part 23 will be described in more detail with reference to FIGS. 3A and 3B. As shown in FIG. 3A which is a cross-sectional view perpendicular to the axis 237 of the pyramid part 23, taking along a line B-B of FIG. 2B, the pyramid part 23 of this embodiment has four sides 231 a, 231 b, 231 c, and 231 d in the cross-sectional view, the four sides 231 a to 231 d are arranged so that all intersection angles θ2 between adjacent sides (for example, 231 b and 231 c) become 90 degrees, and the pyramid part 23 has a substantially square shape in the cross-sectional view. Each of ends between adjacent sides are not directly joined together, but are smoothly joined together through a curve which is outwardly convexed as seen from the center O, i.e., by each of circular arcs 232 a, 232 b, 232 c, and 232 d in this embodiment. The size of the circular arcs 232 a to 232 d is suitably set in consideration of the ease of machining creation of the pyramid part 23. In addition, reference numeral 235 designates a female thread portion formed at the center of the pyramid part 23, and a male thread portion of the fastening part 34 is screwed into this female thread portion.
The pyramid part 23 is formed with four through holes 233 a, 233 b, 233 c, and 233 d in the cross-sectional view thereof. The four through holes 233 a to 233 d with a circular cross-section are distributed and arranged at angles of 90° so that each center O2 is located on a straight line connecting the center O of the pyramid part 23, and the intersection J between adjacent sides (for example, the sides 231 a and 231 d) of the respective sides 231 a to 231 d, and so as to be concentrical with the center O, and the through holes 233 a to 233 d are arranged symmetrically with respect to the center O of the pyramid part 23. Thus, elastic wall portions 238 which are thin-walled and easily elastically deformed are formed between the through holes 233 a to 233 d and the outer peripheral surface of the pyramid part 23 and are arranged symmetrically with respect to the center O at an outer edge portion of the pyramid part 23.
Moreover, as shown in FIG. 3B which is a partially enlarged cross-sectional view in which a portion C of FIG. 3A is enlarged, recesses 234 a to 234 d which are smoothly recessed by a depth t with respect to straight portions are formed at the respective sides 231 a to 231 d of the pyramid part 23. By the recesses 234 a to 234 d, thin-walled portions are formed at the elastic wall portions 238 which are symmetrically arranged. The recesses 234 a to 234 d not only constitute the thin-walled portions in this way, but also are advantageous in forming the respective sides 231 a to 231 d with a high degree of straightness (flatness in each surface of the pyramid part 23 corresponding to each side), when the length of the respective sides 231 a to 231 d is relatively long in the large-sized positioning apparatus.
Additionally, as shown in the right half of FIG. 2B which is a cross-sectional view along the axis of the pyramid part 23, taking along a line O-A of FIG. 2A, the depth of the through holes 233 a to 233 d which are opened to the free end face of the pyramid part 23 is a depth d which is smaller than the protruding length L of the pyramid part 23 from the bottom surface of the fixing part 21, and the base end of the pyramid part 23 is formed with thick-walled portions 236 which are thicker than the elastic wall portions 238. The four through screw holes 213 provided in the fixing part 21, as shown in the drawing, are arranged so as to pass through the respective through holes 233 a to 233 d.
As shown in FIGS. 2B and 2C, the first reference surface 24 perpendicular to the axis 237 of the fixing shaft 22 protrudes downward from the bottom surface of the fixing part 21, and is provided as the bottom surface of an annular protruding portion which is concentrically formed with the axis 237. The first reference surface 24 is used to perform positioning of the object, which is held by the retainer 20, in the Z-axis direction by coming into contact with a second reference surface 38 which is the top surface of the fastener 30. Although the first reference surface 24 of this embodiment has been configured as described above for ease of formation, a surface perpendicular to the axis 237 of the fixing shaft 22 may be formed as the first reference surface, alternatively. That is, the bottom surface itself of the fixing part 21 may be used as the first reference surface, or like a first reference surface of a dotted line designated by reference numeral 24 a in FIG. 2C, the bottom surfaces of three protruding portions which are arranged concentrically with the center O may be used as the first reference surface.
As shown in FIGS. 1 and 4A to 4C, a central portion of the rectangular block-shaped main body 31 is formed with the fixing hole 33 which is vertically provided from an opening 32 opened to the top surface 38 (one surface) thereof. The fixing hole 33 corresponds to the pyramid part 23 of the retainer 20, and is formed so that the whole outer peripheral surface of the pyramid part 23 can be brought into close contact therewith. That is, the inner surface of the fixing hole 33 is formed substantially in the shape of a pyramid which is opened upward at the same taper angle θ1 as the pyramid part 23, and the shape of the fixing hole in cross-sectional view perpendicular to the axis thereof, similarly to the pyramid part 23, is a substantially square shape which is constituted by straight lines of four sides, has an intersection angle of 90° between adjacent sides, and further has circular arcs joining adjacent sides. In addition, in order to provide the thin-walled portions, the recesses 234 a to 234 d are provided at the outer peripheral surface of the pyramid part 23. However, projections corresponding to the recesses 234 a to 234 d may not necessarily be provided in the fixing hole 33. Additionally, the fixing hole 33 passing through the main body 31 is opened to the bottom surface (the other surface) of the main body 31. However, the depth of the fixing hole 33, as shown in FIG. 4B, is a depth such that a first fastening member 341 of the fastening part 34 does not protrude from the bottom surface of the main body 31 when the pyramid part 23 fits into the fixing hole 33 in a state where the first fastening member 341 is connected to the free end of the fixing shaft 22.
After all positioning around the X-axis, Y-axis, and Z-axis has been completed by the fastening process after the above positioning, the object W undergoes processing, such as machining or testing. After this processing is completed, the operator rotates the rotating portion 344 of the first fastening member 341 in a direction opposite to the fastening process, and separates the retainer 20 from the fastener 30. Subsequently, the operator aligns the pyramid part 23 with the fixing hole 33 in the horizontal plane so that the member W to be fastened has the next posture around the axis (Z-axis) 237 (for example, the posture in which the previous posture has been turned by 90°), and inserts the fixing shaft 22 into the fixing hole 33. Hereinafter, operations will be performed similarly to the above. In addition, in the pyramid part 23 of the embodiment described above, the four through holes 233 a to 233 d are arranged as described above. However, the pyramid part can be configured like a pyramid part 43 shown in FIGS. 8A and 8B which is a modification. As shown in FIG. 8B which is a cross-sectional view perpendicular to the axis 237 of the pyramid part 43, taking along a line E-E of FIG. 8A, a cylindrical boss portion 439 for forming the female thread portion 235 is left at the center of the pyramid part 43, a substantially frame-like bottomed wall 433 of which the outer peripheral surface runs along the outer peripheral shape of the pyramid part 43 is formed on the same axis as the boss portion 439, and the outer wall of a bottomed wall 433 having a constant thickness constitutes an elastic wall portion 438. By making the elastic wall portion 438 constant in this way, in the above fastening process, the elastic wall portion 438 elastically deforms uniformly. Thus, positioning around the Z-axis and in the X-axis direction and the Y-axis direction can be performed with high precision. In addition, the elastic wall portion 438 in such a state has advantages that the retainer is made lightweight, and operability can be improved, particularly when the positioning apparatus is enlarged for fastening a large-sized object.
Moreover, in the positioning apparatus of this embodiment, the shape of the fixing shaft and fixing hole in the cross-sectional view perpendicular to an axis is a substantially square shape as described above. However, this shape may be a proper regular polygonal shape according to a desired indexing angle of the object around the Z-axis. That is, when the indexing angle of an object is set to 60°, like a pyramid part 53 shown in FIG. 9, the pyramid part may have six sides 531 a to 531 f in the cross-sectional view perpendicular to an axis, the six sides 531 a to 531 f may be arranged so that all intersection angles between adjacent sides become 120°, the ends of the six sides 531 a to 531 f may be connected by circular arcs 532 a to 532 f, thereby forming the pyramid part 53 into a substantially regular hexagonal shape. The fixing hole may be formed so as to have an inner surface which corresponds to the pyramid part 53 and is formed so as to be capable of being brought into close contact with the whole outer peripheral surface of the pyramid part.
1. A positioning apparatus for positioning an object in respective axis directions of an X-axis, a Y-axis perpendicular to the X-axis, and a Z-axis orthogonal to the X-axis and the Y-axis and positioning the object around the Z-axis within a plane parallel to the X-axis and the Y-axis, the positioning apparatus comprising:
a fastener being configured to detachably fasten the retainer,
wherein the retainer includes:
a fixing part having a first retainer surface and a second retainer surface opposite to the first retainer surface and being configured to fix the object on the first retainer surface thereof;
a fixing shaft having an axis which extends in the Z-axis direction and positions the object in the X-axis direction and the Y-axis direction and protruding from the second retainer surface of the fixing part; and
a first reference surface being disposed at a side of the second retainer surface of the fixing part and being arranged perpendicular to the axis of the fixing shaft,
wherein the fixing shaft is formed integrally with the fixing part and has a tapered pyramid part which decreases in size at a constant angle toward a free end thereof and which is formed coaxially with the fixing shaft,
wherein each of intersection angles between adjacent sides of the pyramid part is the same and each of two ends between the adjacent sides is connected by a curve being outwardly convexed from the axis of the fixing shaft in a cross-sectional view perpendicular to the axis of the fixing shaft,
a body part having a first fastener surface and a second fastener surface opposite to the first fastener surface,
a fixing hole being formed in the first fastener surface of the body part and having an inner surface which corresponds to the pyramid part of the fixing shaft so that a whole outer surface of the pyramid part can come into close contact with the inner surface of fixing hole,
a second reference surface being disposed at a side of the first fastener surface of the body part and being arranged perpendicular to an axis of the fixing hole so that the first reference surface can come into contact with the second reference surface, and
a fastening part being configured to pull the fixing shaft which is inserted into the fixing hole toward the second fastener surface of the body part;
wherein the fixing shaft or the fixing hole is configured such that a gap is formed between the first reference surface and the second reference surface when the fixing shaft is inserted into the fixing hole, the outer surface of the pyramid part fits to the inner surface of the fixing hole and the object is positioned in the X-axis direction and the Y-axis direction, and is configured such that the first reference surface and the second reference surface come into contact with each other when the fastening part pulls the fixing shaft toward the second fastener surface of the body part, the pyramid part or the fixing hole elastically deforms, and the fixing shaft is further pulled into the fixing hole with maintaining the fitting between the outer surface of the pyramid part and the inner surface of the fixing hole,
wherein the pyramid part is formed with a hole in the cross-sectional view perpendicular to the axis of the fixing shaft, to form a plurality of elastic wall portions on respective sides of the pyramid part between the outer surface of the pyramid part and the through hole, and
wherein the respective sides of the pyramid part are formed at center portions thereof with recesses which are smoothly recessed by a predetermined depth with respect to straight portions formed at both sides of the center portions of the respective sides in the cross-sectional view perpendicular to the axis of the fixing shaft, to form a plurality of thin-walled portions at the respective elastic wall portions;
wherein the fastening part comprises:
a first fastening member including:
a male thread portion at one end, the male thread portion being configured to be screwed into a female thread portion which is arranged along the axis of the fixing shaft and provided in the fixing shaft,
a rotating portion at the other end, the rotating portion being configured to rotate the male thread portion, and
a pair of flange portions being spaced apart from each other with a predetermined gap and being disposed between the male thread portion and the rotating portion, wherein the first fastening member is capable of being inserted through the fixing hole of the fastener in a state where the male thread portion is screwed into the female thread portion and the first fastening member is fixed to the fixing shaft, and
a second fastening member being configured to be inserted through an insertion hole portion formed on one surface of the fastener and fitted into the predetermined gap between the flange portions in a state where the fixing shaft is inserted into the fixing hole and the retainer is positioned in the X-axis direction and the Y-axis direction.
US12/765,030 2009-04-28 2010-04-22 Positioning apparatus for positioning object, retainer and fastener thereof Active 2030-08-05 US8757920B2 (en)
JP2009108634A JP5013134B2 (en) 2009-04-28 2009-04-28 Fastening material holder and fastening material positioning fastening device
JPP2009-108634 2009-04-28
US20100272506A1 US20100272506A1 (en) 2010-10-28
US8757920B2 true US8757920B2 (en) 2014-06-24
ID=42372207
US12/765,030 Active 2030-08-05 US8757920B2 (en) 2009-04-28 2010-04-22 Positioning apparatus for positioning object, retainer and fastener thereof
US (1) US8757920B2 (en)
EP (1) EP2246148B1 (en)
JP (1) JP5013134B2 (en)
KR (1) KR101310458B1 (en)
CN (1) CN101875177B (en)
AT (1) AT539841T (en)
TW (1) TWI455790B (en)
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2010-04-22 US US12/765,030 patent/US8757920B2/en active Active
2010-04-27 KR KR1020100039144A patent/KR101310458B1/en not_active IP Right Cessation
2010-04-28 AT AT10161357T patent/AT539841T/en unknown
2010-04-28 EP EP10161357A patent/EP2246148B1/en active Active
2010-04-28 CN CN201010160667.XA patent/CN101875177B/en active IP Right Grant
2010-04-28 TW TW099113448A patent/TWI455790B/en not_active IP Right Cessation
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Owner name: KABUSHIKI KAISHA HONMA SEISAKUSHO, JAPAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HONMA, KAZUO;REEL/FRAME:024279/0834