CN216126851U

CN216126851U - Centering positioning fixture

Info

Publication number: CN216126851U
Application number: CN202121756470.2U
Authority: CN
Inventors: 魏文; 张明荣; 蔡伟; 陈学铭; 李文顺; 张永; 李少荣; 谢圣君; 高云峰
Original assignee: Han s Laser Technology Industry Group Co Ltd
Current assignee: Han s Laser Technology Industry Group Co Ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-03-25
Anticipated expiration: 2031-07-29

Abstract

The utility model belongs to the technical field of electromechanical equipment, and particularly relates to a centering and positioning clamp. The centering and positioning clamp comprises a base, a centering and clamping assembly, a pushing assembly and a flange assembly; the flange assembly is arranged on the base, the pushing assembly is arranged on the base in a sliding mode, and the pushing assembly is used for pushing the workpiece to be machined to abut against the flange assembly; the centering and clamping assembly comprises a first driving piece, a first screw rod, a first clamping part and a second clamping part; a first thread section and a second thread section with opposite thread turning directions are arranged on the first screw rod; the first driving piece is installed on the base, the first screw rod is installed at the output end of the first driving piece, the first clamping portion is in threaded connection with the first threaded section, the second clamping portion is in threaded connection with the second threaded section, and the first clamping portion and the second clamping portion are located on two opposite sides of the first driving piece. The centering and positioning clamp is compact in structure, small in installation space and capable of achieving accurate positioning of the workpiece to be machined.

Description

Centering positioning fixture

Technical Field

The utility model belongs to the technical field of electromechanical equipment, and particularly relates to a centering and positioning clamp.

Background

With the continuous development of science and technology, panels such as glass panels, control panels and the like have been automatically processed. In the processing process of the panel, in order to ensure the cleanliness of the panel to the maximum extent, the process of manually taking the panel needs to be reduced; and, when the panel is carried to low reaches process from the upper reaches process on automated production line, the position state of panel is not necessarily the same completely, so when the manipulator is transported to the event snatchs the panel, need realize accurate location to the panel, just can guarantee to transport the accurate panel of snatching of manipulator.

In the prior art, the panel is generally positioned by a positioning clamp, but the positioning clamp in the prior art has the problems of low positioning precision, large installation volume and the like.

Disclosure of Invention

The utility model provides a centering positioning fixture aiming at the technical problems of low positioning precision, large installation volume and the like of the positioning fixture in the prior art.

In view of the above technical problems, an embodiment of the present invention provides a centering and positioning fixture, which includes a base, a centering and clamping assembly, a pushing assembly, and a flange assembly; the flange assembly is mounted on the base, the pushing assembly is mounted on the base in a sliding mode, and the pushing assembly is used for pushing the workpiece to be machined to abut against the flange assembly;

the centering and clamping assembly comprises a first screw rod, a first driving piece connected with the first screw rod, a first clamping part and a second clamping part, wherein the first clamping part and the second clamping part are used for clamping and centering a workpiece to be machined; the first screw rod is provided with a first thread section and a second thread section with opposite thread turning directions; the first driving piece is arranged on the base and is used for driving the first screw rod to rotate; the first clamping portion is in threaded connection with the first threaded section, the second clamping portion is in threaded connection with the second threaded section, and the first clamping portion and the second clamping portion are located on two opposite sides of the first driving piece.

Optionally, the pushing assembly comprises a second driving piece, a second screw rod and a pushing part for pushing the workpiece to be processed; the central line of the second screw rod is vertical to the central line of the first screw rod; the second driving piece is installed on the base, the second screw rod is installed at the output end of the second driving piece, and the pushing portion is in threaded connection with the second screw rod.

Optionally, the pushing part comprises a pushing nut, a first connecting piece and a pushing column installed on the first connecting piece; the pushing nut is arranged on the first connecting piece and is in threaded connection with the second screw rod;

and a first guide rail parallel to the second screw rod is arranged on the base, and the first connecting piece is slidably arranged on the first guide rail.

Optionally, the first driving member is a double-shaft screw motor, and the second driving member is a single-shaft screw motor.

Optionally, the flange assembly comprises a third driving member, a second connecting member and a movable flange opposite to the pushing assembly; the third driving piece is installed on the base, and the movable stop column is installed at the output end of the third driving piece.

Optionally, the first clamping portion comprises a first clamping nut, a third connector and a first clamping post mounted on the third connector; the first clamping nut is arranged on the third connecting piece and is in threaded connection with the first threaded section;

the second clamping part comprises a second clamping nut, a fourth connecting piece and a second clamping column arranged on the fourth connecting piece; the second clamping nut is arranged on the fourth connecting piece and is in threaded connection with the second threaded section;

a second guide rail parallel to the first screw rod is arranged on the base; the third connecting piece and the fourth connecting piece are both in sliding connection with the second guide rail.

Optionally, the base is further provided with a third guide rail parallel to the second guide rail, the third connecting piece and the fourth connecting piece are both connected with the third guide rail in a sliding manner, and the first driving piece is located between the second guide rail and the third guide rail.

Optionally, an installation space is arranged on the base, and the first driving piece, the first screw rod, the pushing assembly and the flange assembly are all installed in the installation space.

Optionally, the base includes a bottom plate, an enclosure, and a panel enclosing the installation space, and the bottom plate and the panel are installed at opposite ends of the enclosure.

Optionally, an anti-scratch layer is arranged on the surface of the panel, which faces away from the coaming.

In the application, a first thread section and a second thread section with opposite thread turning directions are arranged on the first screw rod; the first driving piece is installed on the base and used for driving the first screw rod, the first clamping portion is in threaded connection with the first threaded section, the second clamping portion is in threaded connection with the second threaded section, and the first clamping portion and the second clamping portion are located on two opposite sides of the first driving piece. The first driving piece can drive the first clamping portion and the second clamping portion to approach or separate from each other through the first screw rod, and the first clamping portion and the second clamping portion move synchronously, so that a workpiece to be machined can be centered and clamped between the first clamping portion and the second clamping portion. In addition, the flange subassembly is installed on the base, promote the subassembly slidable mounting on the base, just the promotion subassembly is used for promoting to treat that the machined part butt is in on the flange subassembly, promptly, the promotion subassembly can be followed another direction and will be treated the machined part butt on the flange subassembly to treat the machined part all around respectively with first clamping part, promote the subassembly the second clamping part and flange subassembly butt, realized treating the accurate locate function of machined part. The centering positioning fixture is compact in structure, small in installation space and capable of achieving accurate positioning of the workpiece to be machined.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a centering fixture according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the centering fixture of FIG. 1;

FIG. 3 is a schematic structural view of the centering and clamping assembly of FIG. 1;

FIG. 4 is a schematic structural view of the pushing assembly of FIG. 1;

FIG. 5 is a schematic view of the rib assembly of FIG. 1.

The reference numerals in the specification are as follows:

1. a base; 11. a first guide rail; 12. a second guide rail; 13. a third guide rail; 14. a base plate; 15. enclosing plates; 16. a panel; 2. centering the clamping assembly; 21. a first driving member; 22. a first lead screw; 221. a first thread segment; 222. a second thread segment; 23. a first clamping portion; 231. a first clamping nut; 232. a third connecting member; 233. a first clamping post; 24. a second clamping portion; 241. a second clamping nut; 242. a fourth connecting member; 243. a second clamping post; 3. a pushing assembly; 31. a second driving member; 32. a second lead screw; 33. a pushing part; 331. pushing the nut; 332. a first connecting member; 333. pushing the column; 4. a flange assembly; 41. a third driving member; 42. a second connecting member; 43. a movable bumping post; 10. and (5) processing the workpiece.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a centering and positioning fixture, which includes a base 1, a centering and clamping assembly 2, a pushing assembly 3, and a flange assembly 4; the flange assembly 4 is mounted (mounted by means of screw connection, welding and the like) on the base 1, the pushing assembly 3 is slidably mounted on the base 1, and the pushing assembly 3 is used for pushing the workpiece to be machined 10 to abut against the flange assembly 4; it is understood that the member to be processed 10 includes, but is not limited to, a glass panel 16, a PCB panel 16, etc., and the base 1 may also function to support the member to be processed 10.

The centering and clamping assembly 2 comprises a first screw rod 22, a first driving part 21 connected with the first screw rod 22, a first clamping part 23 and a second clamping part 24 which are used for clamping and centering the workpiece 10 to be machined; the first screw rod 22 is provided with a first thread section 221 and a second thread section 222 with opposite thread turning directions; the first driving piece 21 is installed on the base 1 and is used for driving the first screw rod 22 to rotate; the first clamping portion 23 is threadedly coupled to the first threaded section 221, the second clamping portion 24 is threadedly coupled to the second threaded section 222, and the first clamping portion 23 and the second clamping portion 24 are located on opposite sides of the first driver 21. It is understood that the first driving member 21 includes, but is not limited to, a twin-screw motor, etc.; the first clamping portion 23 may be provided with a first threaded through hole in threaded connection with the first threaded section 221, and may also be provided with a first clamping nut 231 in threaded connection with the first threaded section 221; and the second clamping portion 24 may be provided with a second threaded through hole in threaded connection with the second threaded section 222, and may also be provided with a second clamping nut 241 in threaded connection with the second threaded section 222. Further, the first lead screw 22 can pass through the first driving member 21, the first lead screw 22 forms a first lead screw-nut mechanism by the first threaded section 221 and the first clamping portion 23, and the first lead screw 22 forms a second lead screw-nut mechanism by the second threaded section 222 and the second clamping portion 24.

In another embodiment, the first lead screw 22 may be a single-piece structure, or may be two lead screws each provided with the first thread section 221 and the second thread section 222.

In this application, the first lead screw 22 is provided with a first thread section 221 and a second thread section 222 with opposite thread turning directions; the first driving member 21 is mounted on the base 1 and is used for driving the first lead screw 22 to rotate, the first clamping portion 23 is in threaded connection with the first threaded section 221, the second clamping portion 24 is in threaded connection with the second threaded section 222, and the first clamping portion 23 and the second clamping portion 24 are located on two opposite sides of the first driving member 21. The first driving member 21 can drive the first clamping portion 23 and the second clamping portion 24 to approach or separate from each other through the first lead screw 22, and the first clamping portion 23 and the second clamping portion 24 move synchronously, so that the workpiece 10 to be machined can be centered and clamped between the first clamping portion 23 and the second clamping portion 24. In addition, flange subassembly 4 is installed on base 1, push assembly 3 slidable mounting is in on base 1, and push assembly 3 is used for promoting waiting to add the butt of machined part 10 on flange subassembly 4, promptly, push assembly 3 can be from another direction will wait to add the butt of machined part 10 on flange subassembly 4 to wait to add machined part 10 all around respectively with first clamping part 23, push assembly 3, second clamping part 24 and flange subassembly 4 butt, realized waiting to add the accurate locate function of machined part 10. The centering positioning fixture is compact in structure and small in installation space, and can realize accurate positioning of the workpiece to be machined 10.

In an embodiment, as shown in fig. 2 and 4, the pushing assembly 3 includes a second driving member 31, a second screw 42, and a pushing portion 33 for pushing the member to be processed 10; the central line of the second screw rod 42 is vertical to the central line of the first screw rod 22; the second driving member 31 is mounted on the base 1, the second lead screw 42 is mounted at the output end of the second driving member 31, and the pushing portion 33 is in threaded connection with the second lead screw 42. It is understood that the second driving member 31 includes, but is not limited to, a single-shaft screw motor, etc., and the second lead screw 42 and the pushing portion 33 constitute a third lead screw-nut mechanism; specifically, the second driving element 31 drives the second screw rod 42 to rotate, the second screw rod 42 drives the pushing portion 33 to move along the second screw rod 42, so that the pushing portion 33 can drive the to-be-processed workpiece 10 to move towards the flange assembly 4, and further the first clamping portion 23 and the second clamping portion 24 move along the direction of the first screw rod 22, so as to clamp the to-be-processed workpiece 10 between the first clamping portion 23 and the second clamping portion 24, and the pushing assembly 3 and the flange assembly 4 move along the direction of the second screw rod 42, so as to clamp the to-be-processed workpiece 10 between the pushing portion 3 and the flange assembly 4. In this embodiment, the pushing assembly 3 has a simple structure, a low manufacturing cost, and a convenient installation.

In one embodiment, as shown in fig. 2 and 4, the pushing part 33 includes a pushing nut 331, a first connector 332, and a pushing post 333 mounted (by screwing, welding, etc.) on the first connector 332; the pushing nut 331 is mounted on the first connecting piece 332, and the pushing nut 331 is in threaded connection with the second lead screw 42; it can be understood that the second lead screw 42 drives the first connecting member 332 to move along the second lead screw 42 through the push nut 331. Specifically, a first mounting through hole is formed in the first connecting member 332, and the push nut 331 is mounted in the first mounting through hole. Further, the number of the pushing columns 333 may be multiple according to actual requirements, and the multiple pushing columns 333 are arranged in parallel at intervals.

The base 1 is provided with a first guide rail 11 parallel to the second screw rod 42, and the first connecting piece 332 is slidably mounted on the first guide rail 11. Specifically, a first sliding groove is formed in the first connecting member 332, and the first connecting member 332 is slidably mounted on the first guide rail 11 through the first sliding groove. In this embodiment, the second driving element 31 drives the first connecting element 332 to slide along the first guide rail 11 through the second lead screw 42, so as to drive the pushing column 333 to drive the workpiece 10 to be processed to move toward a direction close to or away from the flange assembly 4, and the pushing assembly 3 has high positioning accuracy and high motion stability.

In an embodiment, as shown in fig. 2 and 5, the rib assembly 4 comprises a third driving member 41, a second connecting member 42 and a movable rib 43 opposite to the pushing assembly 3; the third driving member 41 is mounted on the base 1, and the movable stop column 43 is mounted at the output end of the third driving member 41. It will be appreciated that the third drive 41 includes, but is not limited to, a lead screw and nut mechanism, a linear motor, a pneumatic cylinder, and a hydraulic cylinder. Further, the movable catch columns 43 can be arranged in a plurality of numbers according to actual requirements, and the movable catch columns 43 are arranged in parallel at intervals.

Specifically, while the pushing assembly 3 drives the member to be processed 10 to move toward the movable stopping post 43, the third driving member 41 does not drive the movable stopping post 43 to move, after the pushing assembly 3 drives the member to be processed 10 to be clamped between the pushing assembly 3 and the stopping edge assembly 4 along the direction of the second lead screw 42, and the first driving member 21 drives the first clamping portion 23 and the second clamping portion 24 to clamp the member to be processed 10 along the direction of the first lead screw 22 (i.e. after the member to be processed 10 is positioned completely), the first driving member 21 drives the first clamping portion 23 and the second clamping portion 24 to be away from the member to be processed 10 through the first lead screw 22, the second driving member 31 drives the pushing post to be away from the member to be processed 10, and the third driving member 41 drives the movable stopping post 43 to be away from the member to be processed 10 (at this time, the periphery of the workpiece 10 to be processed is not contacted with the external parts), so that the transfer robot or the like can take away the positioned workpiece 10 to be processed on the base 1. In this embodiment, the design of the retaining edge assembly 4 can prevent the first clamping portion 23, the second clamping portion 24, the pushing column 333 and the movable retaining column 43 from scratching the workpiece 10 when the transferring manipulator or the like clamps the workpiece 10.

In one embodiment, as shown in fig. 2 and 3, the first clamping portion 23 includes a first clamping nut 231, a third connecting member 232, and a first clamping column 233 mounted (by screwing, welding, etc.) on the third connecting member 232; the first clamping nut 231 is mounted on the third connecting member 232, and the first clamping nut 231 is in threaded connection with the first threaded section 221; specifically, a third mounting through hole is formed in the third connecting member 232, and the first clamping nut 231 is mounted in the third mounting through hole; and the number of the first clamping columns 233 can be set to be a plurality according to actual requirements, and the plurality of the first clamping columns 233 are arranged in parallel at intervals.

The second clamping portion 24 includes a second clamping nut 241, a fourth connector 242, and a second clamping post 243 mounted on the fourth connector 242; the second clamping nut 241 is mounted on the fourth connecting member 242, and the second clamping nut 241 is threadedly connected with the second threaded section 222; specifically, a fourth mounting through hole is formed in the third connecting member 232, and the second clamping nut 241 is mounted in the fourth mounting through hole; the number of the second clamping columns 243 can be multiple according to actual requirements, and the multiple second clamping columns 243 are arranged in parallel at intervals.

A second guide rail 12 parallel to the first screw rod 22 is arranged on the base 1; the third connecting member 232 and the fourth connecting member 242 are slidably connected to the second guide rail 12. Specifically, a third sliding groove is formed in the third connecting member 232, and the third connecting member 232 is slidably connected to the second guide rail 12 through the third sliding groove; a fourth sliding groove is formed on the fourth connecting member 242, and the fourth connecting member 242 is slidably connected to the second guide rail 12 through the fourth sliding groove. In this embodiment, the first lead screw 22 drives the third connecting member 232 and the fourth connecting member 242 to slide along the second guide rail 12, so as to improve the accuracy of positioning the workpiece 10 to be processed by the centering and clamping assembly 2, and improve the stability of the workpiece 10 to be processed by the centering and clamping assembly 2.

In an embodiment, as shown in fig. 2 and 3, a third guide rail 13 parallel to the second guide rail 12 is further disposed on the base 1, the third connecting member 232 and the fourth connecting member 242 are slidably connected to the third guide rail 13, and the first driving member 21 is located between the second guide rail 12 and the third guide rail 13. It can be understood that the second guide rail 12 and the third guide rail 13 are arranged in parallel and at intervals, two opposite ends of the third connecting member 232 are respectively slidably connected to the second guide rail 12 and the third guide rail 13, and two opposite ends of the fourth connecting member 242 are respectively slidably connected to the second guide rail 12 and the third guide rail 13, so as to further improve the positioning accuracy of the centering and clamping assembly 2 and further improve the stability of the centering and clamping assembly 2 driving the workpiece 10 to be processed to move.

In an embodiment, an installation space (not shown) is provided on the base 1, and the first driving member 21, the first lead screw 22, the pushing assembly 3, and the flange assembly 4 are all installed in the installation space. It is understood that the second driving member 31, the second lead screw 42 and the first connecting member 332 of the pushing assembly 3 are all installed in the installation space, and the third driving member 41 and the second connecting member 42 of the flange assembly 4 are all installed in the installation space. In this embodiment, the design of the installation space further improves the compactness of the centering and positioning clamp and prolongs the service life of the centering and positioning clamp.

In one embodiment, as shown in fig. 1, the base 1 includes a bottom plate 14, an enclosure 15 and a panel 16 enclosing the installation space, and the bottom plate 14 and the panel 16 are respectively installed (installed by screw connection, clamping connection and the like) at two opposite ends of the enclosure 15. It is understood that the panel 16 is provided with a plurality of through slots for the push rod 333, the movable catch 43, the first clamping rod 233 and the second clamping rod 243 to pass through; in this embodiment, the design of the base 1 improves the compactness of the centering and positioning fixture, and facilitates the transportation of the centering and positioning fixture.

In one embodiment, the face of the panel 16 facing away from the shroud 15 is provided with an anti-scratch layer (not shown). It is understood that the anti-scratch layer can be made of non-metal material; in this embodiment, the anti-scratch layer is designed to effectively prevent the workpiece 10 to be processed from being scratched, thereby improving the processing quality of the workpiece 10 to be processed.

The working process of the centering positioning clamp comprises the following steps: after the workpiece 10 to be machined is firstly placed on the panel 16, the first driving member 21 drives the first clamping column 233 and the second clamping column 243 to approach each other through the first lead screw 22; meanwhile, the second driving member 31 drives the pushing post 333 to move towards the movable catch 43 through the second lead screw 32; until the first clamping column 233 and the second clamping column 243 clamp the workpiece 10 to be processed from the width direction, and the pushing columns 333 and the movable blocking columns 43 clamp the workpiece 10 to be processed from the length direction, so that the accurate positioning of the workpiece 10 to be processed is completed; the first driving member 21 drives the first clamping column 233 and the second clamping column 243 to be away from the workpiece 10 through the first lead screw 22, the second driving member 31 drives the pushing column 333 to be away from the workpiece 10 through the second lead screw 32, and the third driving member 41 drives the movable blocking column 43 to be away from the workpiece 10, so that the workpiece 10 is not contacted with other parts all around, and at this time, a transfer manipulator and the like can grab the positioned workpiece 10 from the panel 16.

The above description is only exemplary of the centering and positioning fixture of the present invention, and is not intended to limit the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A centering positioning clamp is characterized by comprising a base, a centering clamping assembly, a pushing assembly and a flange assembly; the flange assembly is mounted on the base, the pushing assembly is mounted on the base in a sliding mode, and the pushing assembly is used for pushing the workpiece to be machined to abut against the flange assembly;

2. The centering and positioning fixture as claimed in claim 1, wherein said pushing assembly comprises a second driving member, a second screw rod and a pushing portion for pushing the member to be machined; the central line of the second screw rod is vertical to the central line of the first screw rod; the second driving piece is installed on the base, the second screw rod is installed at the output end of the second driving piece, and the pushing portion is in threaded connection with the second screw rod.

3. The centering and positioning clamp of claim 2, wherein said pushing portion comprises a pushing nut, a first connector and a pushing post mounted on said first connector; the pushing nut is arranged on the first connecting piece and is in threaded connection with the second screw rod;

4. The centering fixture of claim 2, wherein said first drive member is a dual-axis screw motor and said second drive member is a single-axis screw motor.

5. The centering fixture of claim 1, wherein said flange assembly comprises a third drive member, a second link member, and a movable flange opposite said pushing assembly; the third driving piece is installed on the base, and the movable stop column is installed at the output end of the third driving piece.

6. The centering clamp of claim 1, wherein said first clamping portion comprises a first clamping nut, a third connector, and a first clamping post mounted on said third connector; the first clamping nut is arranged on the third connecting piece and is in threaded connection with the first threaded section;

7. The centering and positioning fixture as claimed in claim 6, wherein a third guide rail parallel to said second guide rail is further provided on said base, said third connecting member and said fourth connecting member are slidably connected to said third guide rail, and said first driving member is located between said second guide rail and said third guide rail.

8. The centering and positioning fixture as claimed in claim 1, wherein said base has an installation space, and said first driving member, said first lead screw, said pushing assembly and said flange assembly are installed in said installation space.

9. The centering fixture of claim 8, wherein said base includes a bottom plate, an enclosure, and a face plate enclosing said mounting space, said bottom plate and said face plate being mounted at opposite ends of said enclosure, respectively.

10. A centering and locating jig according to claim 9 wherein the face plate is provided with an anti-scratch layer on the surface facing away from the shroud.