CN211840825U

CN211840825U - Positioning and rotating mechanism

Info

Publication number: CN211840825U
Application number: CN202020438291.3U
Authority: CN
Inventors: 曲杰; 王洋; 熊东锋; 潘东东; 曹俊野
Original assignee: Zhejiang Qianjiang Robot Co ltd
Current assignee: Zhejiang Qianjiang Robot Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-11-03
Anticipated expiration: 2030-03-30

Abstract

The utility model provides a location rotary mechanism belongs to mechanical technical field. The positioning and rotating mechanism solves the problems that the existing positioning and rotating mechanism damages a workpiece too much and affects the machining precision of the workpiece. This location rotary mechanism, including the workstation, be equipped with initiative seat and driven seat on the workstation, be equipped with chuck one on the initiative seat and can drive the rotatory initiative motor of chuck one, be equipped with the chuck two that sets up relatively with chuck one on the driven seat, driven seat can be close to or keep away from the initiative seat, chuck one is last to be connected with can support the buffer block one that leans on with the work piece, connect on the chuck two can support the buffer block two that leans on with the work piece, buffer block one and buffer block two all adopt flexible material to make. The positioning and rotating mechanism can reduce damage to the workpiece and can further improve the machining precision of the workpiece.

Description

Positioning and rotating mechanism

Technical Field

The utility model belongs to the technical field of machinery, a location rotary mechanism is related to.

Background

Since many cylindrical workpieces need to be connected together by welding, the cylindrical workpieces are usually clamped and positioned before being subjected to girth welding in the production process. The existing circular seam welding machine has the advantages that two clamping seats are arranged on a workbench, a mechanical arm capable of clamping the outer surface of a cylindrical workpiece is arranged on each clamping seat, and the mechanical arm clamps the outer surfaces of two ends of the workpiece, so that the outer wall of the end part of the workpiece is influenced by a welding gun in the machining process.

In view of the above problems, various positioning and rotating mechanisms have been developed:

for example, the Chinese patent application (patent application No. 201621385623.6) discloses a circular seam double-gun automatic welding device, which comprises a machine base and a workpiece rotating mechanism, wherein the machine base adopts a saddle-shaped mechanism, a driving box and a linear guide rail are arranged on the machine base, a main shaft box is arranged at one end of the machine base, the linear guide rail is extended to the other end of the machine base by leaning against the driving box, a driven box is arranged on the linear guide rail, the driven box can move towards two sides through a linear gear, the workpiece rotating mechanism comprises a stepping motor, a first chuck, a second chuck and a jacking device, stripping air cylinders are arranged in three jaws of the first chuck, the stepping motor is arranged in the driving box, its output is connected with first chuck, and the tight device in top sets up in the slave box, is connected with the second chuck, and first chuck, second chuck all adopt air chuck, can press from both sides tight not equidimension end cover about to but the quick clamping unclamps left end cover and right end cover.

The workpiece rotating mechanism is used for positioning a workpiece in a manner of clamping the workpiece by the first chuck and the second chuck, and the outer end of the workpiece is not clamped by the first chuck and the second chuck, so that the outer wall of the end part of the workpiece is not affected by a welding gun; and avoid causing the damage to the work piece, make first chuck and second chuck less to the clamp force of work piece, first chuck and work piece and second chuck all have the clearance with the work piece this moment, at the girth welding in-process, need rotate the work piece again, at this moment when first chuck and second chuck drive the work piece rotatory, first chuck and work piece and second chuck all can the collision appear, but welder welds the work piece always, the problem of delayed motion can appear in the work piece when having caused to start, thereby the machining accuracy of work piece has been influenced.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a location rotary mechanism, the utility model aims to solve the technical problem that: how to solve the problem that the existing positioning and rotating mechanism has overlarge damage to a workpiece and influences the processing precision of the workpiece.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a location rotary mechanism, includes the workstation, be equipped with initiative seat and driven seat on the workstation, be equipped with chuck one on the initiative seat and can drive the rotatory initiative motor of chuck, be equipped with the chuck two that sets up with chuck one relatively on the driven seat, driven seat can be close to or keep away from initiative seat, its characterized in that, be connected with the buffer block one that can lean on with the work piece counterbalance on chuck one, connect the buffer block two that can lean on with the work piece counterbalance on the chuck two, buffer block one and buffer block two all adopt flexible material to make.

The working principle is as follows: the workpiece is placed between the driving seat and the driven seat, the first chuck on the driving seat is connected with the first buffer block, the second chuck on the driven seat is connected with the second buffer block, the first buffer block and the second buffer block which are suitable can be selected according to the size of the workpiece at the moment, the applicability of the positioning and rotating mechanism is improved, when the workpiece is hollow, the first buffer block and the second buffer block can be partially embedded into an inner cavity of the workpiece, so that the clamping degree of the workpiece is better, when the workpiece is solid, the first buffer block and the second buffer block can be abutted against the end part of the workpiece, the workpiece can be positioned at the moment, the workpiece is rigid, the first buffer block and the second buffer block are flexible, the workpiece is clamped without large clamping force, no gap exists between the workpiece and the first buffer block, no gap exists between the workpiece and the second buffer block, so that the workpiece and the first buffer block and the second buffer block synchronously rotate when the workpiece is started, and when rotating, because the work piece is through the tight clamp of flexible material during, consequently can reduce the damage to the work piece, also can further promote the machining precision of work piece simultaneously.

In foretell location rotary mechanism, chuck one includes a plurality of jack catchs one, buffer block one includes connecting portion one and buffering portion one, connecting portion one imbeds between a plurality of jack catchs one and is connected with chuck one, buffering portion one go up have be conical spigot surface one and be planar support to face one, spigot surface one with support to face one and be connected.

The first connecting portion is arranged, the first buffer block can be stably connected with the first chuck, the first guide face is arranged, when the workpiece is hollow, the first buffer block can adapt to workpieces of different sizes, the first buffer block can enable the first buffer block to be more stably connected with the workpiece through the first guide face, the first buffer block is abutted to the first guide face, when the workpiece is solid, the first buffer block is abutted to the end face of the workpiece, only the first buffer block is abutted to the end face of the workpiece, and the first buffer block can be tightly pressed on the end face of the workpiece, so that the practicability and stability of the first buffer block can be further improved.

In foretell location rotary mechanism, chuck two includes a plurality of jack catchs two, buffer block two includes connecting portion two and buffering portion two, connecting portion two imbeds between a plurality of jack catchs two and is connected with chuck two, buffering portion two is gone up to have and is conical spigot surface two and be planar to support to face two, spigot surface two with support to face two and be connected.

The setting of connecting portion two, make buffer block two can be stable be connected with chuck two, and the setting of spigot surface two, make when the work piece is hollow, buffer block two can adapt to the work piece of equidimension not, and can make the more stable of being connected between buffer block two and the work piece through spigot surface two, support the setting of face two, make when the work piece is solid, support and lean on face two can counterbalance with the terminal surface of work piece, only need this moment will support and lean on face two compress tightly on the terminal surface of work piece can, thereby can further promote practicality and the stability of buffer block two.

In the above positioning and rotating mechanism, the workbench is provided with a slide rail, the driven seat is provided with a slide block, and the slide block can move along the slide rail towards the direction of the driven seat.

The slide block and the slide rail are arranged, so that the position of the driven seat on the workbench can be adjusted, the workpiece is conveniently clamped between the driven seat and the driving seat, and the positioning of the workpiece is faster and more stable.

In the above positioning and rotating mechanism, the workbench is further provided with a rack, the driven seat is hinged with a gear and a hand wheel for driving the gear to rotate, and the gear is meshed with the rack.

The setting of this structure can just can remove the position of driven seat through manual regulation, and the regulation mode of gear and rack for driven seat motion is more stable.

The driven seat can also be provided with a screw rod nut, the workbench is provided with a screw rod and a screw rod motor, the screw rod motor can drive the screw rod to rotate, and the screw rod penetrates through the screw rod nut and drives the screw rod nut and the driven seat to be close to or far away from the driving seat to move.

In the positioning and rotating mechanism, the driven seat is also provided with a driving cylinder capable of pushing the chuck II to move towards the chuck I.

The setting of this structure for after the work piece can set up between driven seat and initiative seat, the work piece can set up between buffer block one and buffer block two this moment, only need buffer block two to remove less distance just can with the work piece clamp tight the time, drive actuating cylinder drive chuck two movements can, and need not adjust the position of driven seat, make whole positioning and rotating mechanism's regulation simpler and convenient.

In foretell location rotary mechanism, still be equipped with two at least guide holders on the driven seat, a plurality of guide holders are located the both sides that drive actuating cylinder respectively, and it wears to be equipped with a guide bar to be located to drive actuating cylinder on the guide holder with one side, the guide bar can move along the direction of motion of the piston rod that drives actuating cylinder, chuck two is equipped with the connecting plate, the middle part of connecting plate is connected with the piston rod that drives actuating cylinder, the one end of connecting plate is connected with one of them guide bar, the other end and another guide bar of connecting plate are connected.

The setting of this structure leads the removal of the piston rod that drives actuating cylinder, and is provided with two guide bars for the setting of guide bar is more stable, thereby can further promotion the stability of location rotary mechanism location.

Compared with the prior art, this location rotary mechanism has the advantage: the work piece is the rigidity, and buffer block one and buffer block two are the flexibility to need not very big clamp force to press from both sides the work piece tightly, do not have the clearance between work piece and the buffer block one, also do not have the clearance between work piece and the buffer block two, thereby make when starting, work piece and buffer block one and buffer block two synchronous rotation, consequently can reduce the damage to the work piece, also can further promote the machining precision of work piece simultaneously.

Drawings

Fig. 1 is a schematic structural view of the present positioning and rotating mechanism with a workpiece mounted thereon.

Fig. 2 is a schematic structural view of the positioning and rotating mechanism without a workpiece mounted thereon.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a partial structural schematic view of the present positioning and rotating mechanism.

In the figure, 1, a workbench; 11. a slide rail; 12. a rack; 2. a driving seat; 21. a first chuck; 22. an active motor; 23. a first clamping jaw; 3. a driven seat; 31. a second chuck; 311. a connecting plate; 312. a second jaw; 32. a slider; 33. a gear; 34. a hand wheel; 35. a driving cylinder; 351. a piston rod; 36. a guide seat; 37. a guide bar; 4. a first buffer block; 41. a first connecting part; 42. a first buffer part; 43. a first guide surface; 44. a first abutting surface; 5. a second buffer block; 51. a second connecting part; 52. a second buffer part; 53. a second guide surface; 54. a second abutting surface; 6. and (5) a workpiece.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the positioning and rotating mechanism includes a workbench 1, a driving seat 2 and a driven seat 3 are arranged on the workbench 1, a first chuck 21 and a driving motor 22 capable of driving the first chuck 21 to rotate are arranged on the driving seat 2, a second chuck 31 arranged opposite to the first chuck 21 is arranged on the driven seat 3, and the driven seat 3 can be close to or far away from the driving seat 2.

Specifically, as shown in fig. 1-4, a first buffer block 4 capable of abutting against the workpiece 6 is connected to the first chuck 21, a second buffer block 5 capable of abutting against the workpiece 6 is connected to the second chuck 31, and both the first buffer block 4 and the second buffer block 5 are made of flexible materials.

The working principle is as follows: the workpiece 6 is placed between the driving seat 2 and the driven seat 3, the first buffer block 4 is connected to the first chuck 21 on the driving seat 2, the second buffer block 5 is connected to the second chuck 31 on the driven seat 3, the first buffer block 4 and the second buffer block 5 which are suitable can be selected according to the size of the workpiece 6, the applicability of the positioning and rotating mechanism is improved, when the workpiece 6 is hollow, the first buffer block 4 and the second buffer block 5 can be partially embedded into the inner cavity of the workpiece 6, so that the clamping degree of the workpiece 6 is better, when the workpiece 6 is solid, the first buffer block 4 and the second buffer block 5 can be abutted against the end part of the workpiece 6, the workpiece 6 can be positioned at the moment, the workpiece 6 is rigid, the first buffer block 4 and the second buffer block 5 are flexible, the workpiece 6 is not required to be clamped by a large clamping force, no gap exists between the workpiece 6 and the first buffer block 4, and no gap exists between the workpiece 6 and the second buffer block 5, therefore, when the workpiece 6 is started, the workpiece 6, the first buffer block 4 and the second buffer block 5 synchronously rotate, and when the workpiece 6 rotates, the workpiece 6 is clamped tightly through the flexible material, so that damage to the workpiece 6 can be reduced, and meanwhile, the machining precision of the workpiece 6 can be further improved.

As shown in fig. 1-3, the first chuck 21 includes a plurality of first jaws 23, the first buffer block 4 includes a first connecting portion 41 and a first buffer portion 42, the first connecting portion 41 is inserted between the first jaws 23 and connected with the first chuck 21, the first buffer portion 42 has a first conical guide surface 43 and a first planar abutment surface 44, the first guide surface 43 is connected with the first abutment surface 44, the second chuck 31 includes a plurality of second jaws 312, the second buffer block 5 includes a second connecting portion 51 and a second buffer portion 52, the second connecting portion 51 is inserted between the second jaws 312 and connected with the second chuck 31, the second buffer portion 52 has a second conical guide surface 53 and a second planar abutment surface 54, and the second guide surface 53 is connected with the second abutment surface 54.

As shown in fig. 1, 2 and 4, the workbench 1 is provided with a slide rail 11, the driven seat 3 is provided with a slide block 32, the slide block 32 can move along the slide rail 11 towards the direction of the driving seat 2, the workbench 1 is further provided with a rack 12, the driven seat 3 is hinged with a gear 33 and a hand wheel 34 for driving the gear 33 to rotate, and the gear 33 is meshed with the rack 12.

As shown in fig. 2 and 3, the driven base 3 is further provided with a driving cylinder 35 capable of pushing the chuck two 31 to move towards the chuck one 21, the driven base 3 is further provided with at least two guide bases 36, the guide bases 36 are respectively located at two sides of the driving cylinder 35, a guide rod 37 penetrates through the guide base 36 located at the same side of the driving cylinder 35, the guide rod 37 can move along the movement direction of a piston rod 351 of the driving cylinder 35, the chuck two 31 is provided with a connecting plate 311, the middle portion of the connecting plate 311 is connected with the piston rod 351 of the driving cylinder 35, one end of the connecting plate 311 is connected with one of the guide rods 37, and the other end of the connecting plate 311 is connected with the other guide rod 37.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a location rotary mechanism, includes workstation (1), be equipped with initiative seat (2) and driven seat (3) on workstation (1), be equipped with chuck one (21) and can drive initiative motor (22) that chuck one (21) is rotatory on initiative seat (2), be equipped with two (31) of chuck that set up relatively with chuck one (21) on driven seat (3), driven seat (3) can be close to or keep away from initiative seat (2), a serial communication port, be connected with buffer block one (4) that can offset and lean on with work piece (6) on chuck one (21), connect on chuck two (31) can offset and lean on buffer block two (5) with work piece (6), buffer block one (4) and buffer block two (5) all adopt flexible material to make.

2. The positioning and rotating mechanism according to claim 1, wherein the first chuck (21) comprises a plurality of first jaws (23), the first buffer block (4) comprises a first connecting part (41) and a first buffer part (42), the first connecting part (41) is embedded between the plurality of first jaws (23) and connected with the first chuck (21), the first buffer part (42) is provided with a first conical guide surface (43) and a first planar abutment surface (44), and the first guide surface (43) is connected with the first abutment surface (44).

3. The positioning and rotating mechanism according to claim 1, wherein the second chuck (31) comprises a plurality of second jaws (312), the second buffer block (5) comprises a second connecting part (51) and a second buffer part (52), the second connecting part (51) is embedded between the second plurality of jaws (312) and is connected with the second chuck (31), the second buffer part (52) is provided with a second conical guide surface (53) and a second planar abutment surface (54), and the second guide surface (53) is connected with the second abutment surface (54).

4. The positioning and rotating mechanism according to claim 1, 2 or 3, wherein the worktable (1) is provided with a slide rail (11), the driven seat (3) is provided with a slide block (32), and the slide block (32) can move along the slide rail (11) towards the driving seat (2).

5. The positioning and rotating mechanism according to claim 4, wherein a rack (12) is further provided on the working table (1), a gear (33) and a hand wheel (34) for driving the gear (33) to rotate are hinged on the driven seat (3), and the gear (33) is meshed with the rack (12).

6. The positioning and rotating mechanism according to claim 1, 2 or 3, wherein the driven seat (3) is further provided with a driving cylinder (35) capable of pushing the second chuck (31) to move towards the first chuck (21).

7. The positioning and rotating mechanism according to claim 6, wherein the driven base (3) is further provided with at least two guide bases (36), the guide bases (36) are respectively located at two sides of the driving cylinder (35), a guide rod (37) is arranged on the guide base (36) located at the same side of the driving cylinder (35) in a penetrating manner, the guide rod (37) can move along the movement direction of a piston rod (351) of the driving cylinder (35), the chuck two (31) is provided with a connecting plate (311), the middle part of the connecting plate (311) is connected with the piston rod (351) of the driving cylinder (35), one end of the connecting plate (311) is connected with one of the guide rods (37), and the other end of the connecting plate (311) is connected with the other guide rod (37).