Patent ID: 12208478

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer toFIGS.1to9for a preferable embodiment of the present invention. A positioning device of the present invention is adapted for removably positioning a tooling fixture70, the positioning device includes a base seat10, a clamping assembly20and an adjustment assembly30.

The base seat10includes a plurality of through holes11and a slide groove12which extends in a first direction L1, the plurality of through holes11are configured to receive a plurality of positioning pins40which are connected with the tooling fixture70. The clamping assembly20is disposed within the slide groove12. The clamping assembly20includes a first clamping body21and a second clamping body22. The first clamping body21and the second clamping body22are respectively movable relative to each other and relative to at least one said through hole11between a locking position and a release position in the first direction L1. The adjustment assembly30includes a first driving rod31, a second driving rod32and at least one rotation rod33. The at least one rotation rod33is disposed within the base seat10. The first driving rod31and the second driving rod32are respectively rotatably disposed within the slide groove12. The first driving rod31includes a first thread section311and a first bevel gear312connected with the first thread section311, the second driving rod32includes a second thread section321and a second bevel gear322connected with the second thread section321. The first clamping body21is screwed to the first thread section311and the second clamping body22is screwed to the second thread section321, and each of the at least one rotation rod33includes a third bevel gear331, the third bevel gear331is meshed with the first bevel gear312and the second bevel gear322, so that the first driving rod31and the second driving rod32are respectively rotated by the at least one rotation rod33. In this embodiment, the first thread section311and the second thread section321are respectively formed in opposite helical directions. Therefore, it provides the tooling fixture70to be quickly disengaged or engaged. Moreover, the first driving rod31is screwed to the first clamping body21, and the second driving rod32to the second clamping body22, to create a face-to-face contact. As a result, the first clamping body21and the second clamping body22are moved by evenly-applied force.

Besides, it can be changed a gear ratio between the third bevel gear331and the first bevel gear312, and a gear ratio between the third bevel gear331and the second bevel gear322, or a shape of at least one of the first bevel gear312, the second bevel gear322and the third bevel gear331in accordance with an output torque, a driving force, a migration velocity of the first clamping body21or the second clamping body22, a load weight of the first driving rod31or the second driving rod32.

Each of the plurality of through holes11axially extends and is transverse to the first direction L1. The plurality of through holes11are respectively at least partially disposed at corners of the slide groove12, the first clamping body21includes at least one first engaging portion211, the second clamping body22includes at least one second engaging portion221; wherein when the first clamping body21and the second clamping body22are respectively located in the locking position, the at least one first engaging portion211and the at least one second engaging portion221each is disposed through one of the plurality of through holes11and engaged within a groove41of one of the plurality of positioning pins40which is disposed through one of the plurality of the through hole11. When the first clamping body21and the second clamping body22are respectively located in the release position, the at least one first engaging portion211and the at least one second engaging portion221each is disengaged from the groove41of one of the plurality of positioning pins40. In the embodiment, the first clamping body21includes two said first engaging portions211at two opposite corners thereof, and the two first engaging portions211are respectively disposed on a side of the first clamping body21away from the first bevel gear312in the first direction L1, and the two said first engaging portions211are separately arranged in a direction which is transverse to the first direction L1.

The second clamping body22includes two said second engaging portion221formed at two opposite corners thereof, and the two first engaging portions221are respectively disposed on a side of the second clamping body21away from the second bevel gear322in the first direction L1, and the two said second engaging portions221are separately arranged in a direction which is transverse to the first direction L1. Therefore, each of the two first engaging portions211and each of the two second engaging portions221each is engaged within the groove41of one of the plurality of positioning pins40and abutted against one of the plurality of positioning pins40in a direction which is oblique to the first direction L1, so as to stably lock the plurality of positioning pins40. Moreover, the first clamping body21the second clamping body22each can be engaged with the plurality of positioning pins40.

The at least one first engaging portion211and the at least one second engaging portion221each has an arcuate face23facing one of the plurality of through holes11. The at least one first engaging portion211and the at least one second engaging portion221each is wedge-shaped and includes a first inclined face24and a second inclined face25, the arcuate face23is disposed between the first inclined face24and the second inclined face25, and the first inclined face24and the second inclined face25are respectively gradually close to each other toward the arcuate face23. In this embodiment, the first inclined face24and the second inclined face25are respectively concave arc shaped. Specifically, the first inclined face24and the second inclined face25are respectively abuttable against two inclined walls43, the two inclined walls are disposed on the two opposite sides of the groove41and arranged in a direction which is transverse to the first direction. The arcuate face23corresponds to (or is abutted against) a circumferential bottom surface42of groove41. Therefore, it can be tightly engaged with different sizes of the plurality of positioning pins40. For example, the different sizes of the positioning pins40have said grooves that have different depths, heights, or curvatures.

The first bevel gear312and the second bevel gear322are disposed separately in the first direction L1, and the third bevel gear331of the at least one rotation rod33is meshed between the first bevel gear312and the second bevel gear322. Preferably, the adjustment assembly30includes a plurality of said rotation rod33, and said third bevel gears331of the plurality of rotation rods33are meshed between the first bevel gear312and the second bevel gear322on different sides (on opposite two sides) of the first bevel gear312and the second bevel gear322.

At least two said rotation rods33are coaxial with each other in a direction which is transverse to the first direction L1; the first driving rod31is coaxial with the second driving rod32in the first direction L1. Therefore, it can be selected from different sides of the base seat10to adjust one of the at least two rotation rod33to stably rotate the first bevel gear312and the second bevel gear322without swaying.

The base seat10further includes a first axial hole13and a blocking member14. The first axial hole13is communicated with the slide groove12. The adjustment assembly30further includes a shaft member34. The shaft member34is disposed through the first axial hole13and at least one of the first driving rod31and the second driving rod32, and at least one of the first driving rod31and the second driving rod32is rotatable relative to the shaft member34, the blocking member14is covered the first axial hole13. In this embodiment, the blocking member14is a set screw which is screwed in the first axial hole13, so that it is easy to open or close the first axial hole13. Preferably, the base seat10further includes a second axial hole16; the second axial hole16and the first axial hole13are coaxial with each other and respectively disposed at two opposite sides of the slide groove12. The shaft member34is disposed through the first driving rod31, and the second driving rod32and the second axial hole16; thus, the first driving rod31and the second driving rod32are coaxial to each other and are respectively stably rotated.

The positioning device further includes at least one positioning assembly60. The base seat10further includes at least one receiving hole15which extends in a second direction L2, each of the at least one receiving hole15is communicated with the slide groove12, and the second direction L2is transverse to the first direction L1. The at least one rotation rod33is rotatably disposed through the at least one receiving hole15, each of the at least one positioning assembly60includes a position restriction61and a washer62, the at least one position restriction61is disengageably disposed within an end portion of the at least one receiving hole15which is disposed away the slide groove12. The at least one rotation rod33is blocked by the at least one position restriction61in the second direction L2. The washer62is abutted between the position restriction61and the rotation rod33. In this embodiment, the position restriction61is a retaining ring, the at least one rotation rod33has an end portion which corresponds the position restriction61, and the end portion has a connection portion332. The connection portion332is adapted for being connected with a tool. In this embodiment, the connection portion332is a polygonal hole. Specifically, the tool can be disposed through the washer62and retaining ring to connect with the polygonal hole. Besides, the base seat10includes two said receiving hole15. The two receiving holes15are separate in the second direction L2, and each of the plurality of rotation rods33is disposed through one of the two receiving holes15. Thus, each of the plurality of rotation rods33can be blocked by the position restriction61and cannot be moved away from the third bevel gear331in the second direction L2. As a result, each of the plurality of rotation rods33is stably meshed with the first driving rod31and the second driving rod32. The retaining ring can be sprung open or sprung back into shape.

In this embodiment, an outer diameter of the first bevel gear312is greater than an outer diameter of the first thread section311. The first bevel gear312and the first thread section311are arranged in a first central axis A1. The first bevel gear312includes a bottom portion313disposed in the first central axis A1and a plurality of first tooth portions314, and the plurality of first tooth portions314are circumferentially disposed on the bottom portion313and disposed around the first central axis A1. Moreover, the plurality of first tooth portions314are axially protruded from the bottom portion313. The plurality of first tooth portions314and the bottom portion313are defined a cavity315, and each of the plurality of first tooth portions314includes a first conical face316, a second conical face317, two inclined abutting faces318and an outer tooth face319. The first conical face316is radially gradually tapered toward the cavity315, the second conical face317is axially gradually tapered toward the bottom portion313, and the first conical face316is transverse to the second conical face317. The outer tooth face319and the second conical face317are radially disposed on two opposite sides of one said first tooth portion314, and the outer tooth face319is far away from the cavity315. The outer tooth face319is axially gradually tapered from the bottom portion313. The two inclined abutting faces318are circumferentially disposed on two opposite sides of the first conical face316, and each of the two inclined abutting face318is disposed between the first conical face316, the second conical face317and the outer tooth face319. The second driving rod32is the same structure as the first driving rod31. Each of the plurality of rotation rods33defines a second central axis A2and includes a plurality of second tooth portions35disposed around the second central axis A2. Each of plurality of second tooth portions35includes an inclined tooth face351, two abutting faces352, an extending face353and an end face354which radially extends. The inclined tooth face351is disposed between the end face354and the extending face353. The extending face353is axially tapered toward the inclined tooth face351. The inclined tooth face351is a quadrilateral. The inclined tooth face351is tapered from the extending face353to the end face354and gradually close to the second central axis A2. The two abutting faces352are circumferentially connected with two opposite sides of the extending face353, and each of the two abutting faces352is disposed between the inclined tooth face351and the end face354. One of the two abutting faces352is circumferentially abutted against one of the two inclined abutting faces318of one of the plurality of first tooth portions314. Thus, the first driving rod31and the second driving rod32can be easy rotated by each of the plurality of rotation rods33. The first central axis A1is intersected to the second central axis A2. In another embodiment, each first tooth portion and each second tooth portion are respectively V-shaped or trapezoid-shaped.

An end portion of the first driving rod31and an end portion of the second driving rod32which are disposed away from each other and abutted against a wall of the slide groove12, so that it can prevent the first driving rod31and the second driving rod32from being moved away from each other when the first driving rod31and the second driving rod32are respectively rotated by the at least one rotation rod33.

The positioning device further includes a plurality of positioning rings50, and the plurality of positioning rings50are respectively disposed within the plurality of through holes11. A circumferential wall52of each of the plurality of the positioning rings50has a via hole51. The via hole51is communicated with one of the plurality of through holes11and the slide groove12. The at least one first engaging portion211and the second engaging portion221each is disposed through one said via hole51of one of the plurality of positioning rings50. Specifically, each of the positioning ring50is harder than the base seat10, and each of the plurality of the positioning ring50can be made of metal material or plastic material; thus, it can prevent the base seat10from being worn. Besides, each of the plurality of the positioning ring50is disengageably disposed within one of the plurality of through holes11.

In use, the at least one rotation rod33is rotated to rotate the first driving rod31and the second driving rod32, so that the first clamping body21and the second clamping body22can be moved relative to each other to lock or release the plurality of positioning pins40.

Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.