CN211277897U

CN211277897U - Flexible constant-force grinding and polishing mechanism

Info

Publication number: CN211277897U
Application number: CN201921819187.2U
Authority: CN
Inventors: 陈巍
Original assignee: Kunshan Yue Sheng Pml Precision Mechanism Ltd
Current assignee: Kunshan Yue Sheng Pml Precision Mechanism Ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-08-18
Anticipated expiration: 2029-10-28

Abstract

The utility model discloses a flexible constant force grinds polishing mechanism, the inside of polishing platform is inlayed and is equipped with the cylinder body, the inside activity of cylinder body is pegged graft and is had the gangbar, the outside fixedly connected with limiting plate of gangbar, the bottom of limiting plate is equipped with the spring, the spring cup joints in the outside of gangbar, the upper end welding of gangbar has the grinding table. The utility model discloses mainly by polishing platform, robotic arm, the cylinder body, parts such as grinding table constitute, when polishing, place the top at grinding table with the work piece, then drive the head of polishing by robotic arm and paste on the work piece, and extrude the work piece downwards, grinding table moves down, grinding table receives the resilience force of spring in the cylinder body simultaneously, upwards push up the work piece and paste in the bottom of head of polishing, the invariable reaction force of production can act on work piece and head of polishing, make the work piece and the dynamics of being connected between the head of polishing balanced, the quality of polishing is improved.

Description

Flexible constant-force grinding and polishing mechanism

Technical Field

The utility model relates to the technical field of machining, specifically a flexible constant force grinds polishing mechanism.

Background

Grinding is an important part in the processing link, and in high-precision grinding, the grinding pressure applied to a workpiece is an important factor influencing the surface processing quality, so that the key for ensuring the grinding quality and the efficiency is to ensure the grinding pressure to be constant.

In the prior art, a mechanical arm and a constant-force grinding and polishing device are combined to automatically grind a workpiece, but the spatial positions of the mechanical arm and the constant-force grinding and polishing device are adjusted according to the structure of the workpiece in the grinding process, and the traditional position control mode is difficult to meet the grinding requirements of different workpieces, so that the grinding quality of the workpiece is seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible constant force grinds polishing mechanism places the work piece at the top of grinding table, then drive the head of polishing by robotic arm and paste on the work piece to extrude the work piece downwards, the grinding table moves down, the grinding table receives the resilience force of spring in the cylinder body simultaneously, upwards push up the work piece and paste in the bottom of the head of polishing, the invariable reaction force of production can act on the work piece and the head of polishing, make the work piece and the dynamics of being connected between the head of polishing balanced, improve the quality of polishing.

In order to achieve the above object, the utility model provides a following technical scheme: a flexible constant-force grinding and polishing mechanism comprises a polishing table, wherein a mechanical arm is mounted at the top of the polishing table, a motor is mounted at the end of the mechanical arm, and a polishing head is mounted on an output shaft of the motor;

a cylinder body is embedded in the polishing table, a linkage rod is movably inserted in the cylinder body, a limiting plate is fixedly connected to the outside of the linkage rod, a spring is arranged at the bottom of the limiting plate and sleeved on the outside of the linkage rod, and a grinding table is welded at the upper end of the linkage rod;

the grinding table is characterized in that fixing plates are welded on two sides of the grinding table, a threaded hole is formed in one side of each fixing plate, a screw rod is connected to the inner threads of the threaded hole, a bearing is sleeved at one end of the screw rod, and a clamping plate is welded on an outer ring of the bearing through a steel plate.

Preferably, a holding part is installed at one end of the screw rod, and a rubber sleeve is sleeved outside the holding part.

Preferably, a rubber pad is bonded to one side of the clamping plate, and anti-skid grains are arranged on the surface of the rubber pad.

Preferably, the bottom of the grinding table is welded with a limiting rod, the limiting rod is movably inserted into the limiting hole, and the limiting hole is formed in the top of the polishing table.

Preferably, linear bearings are arranged at the joint of the cylinder body and the linkage rod and in the limiting hole.

Preferably, the two ends of the limiting hole and the cylinder body are both provided with sealing rings.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model mainly comprises a polishing table, a mechanical arm, a cylinder body, a grinding table and other components, when in grinding, a workpiece is placed at the top of the grinding table, then the grinding head is driven by the mechanical arm to be pasted on the workpiece, the workpiece is extruded downwards, the grinding table moves downwards, the grinding table is simultaneously subjected to the resilience force of a spring in the cylinder body, the workpiece is pasted at the bottom of the grinding head by pushing upwards, the generated constant reaction force can act on the workpiece and the grinding head, so that the connecting force between the workpiece and the grinding head is balanced, and the grinding quality is improved;

2. the utility model discloses set up the fixed plate in the top both sides of grinding table, drive splint through rotating the screw rod and remove, press from both sides tightly the work piece for the work piece is fixed and is dismantled more conveniently.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the polishing table of the present invention;

fig. 3 is a schematic view of the sectional structure of the cylinder body of the present invention.

In the figure: 1. a polishing table; 2. a robot arm; 3. a motor; 4. polishing head; 5. a cylinder body; 6. a linkage rod; 7. a limiting plate; 8. a spring; 9. a grinding table; 10. a threaded hole; 11. a screw; 12. a bearing; 13. a splint; 14. a grip portion; 15. a rubber sleeve; 16. a rubber pad; 17. a limiting rod; 18. a limiting hole; 19. a linear bearing; 20. a seal ring; 21. and (7) fixing the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a flexible constant force grinds polishing mechanism, includes polishing platform 1, and robotic arm 2 is installed at polishing platform 1's top, and rectangular coordinate system robotic arm has three main degrees of freedom. The X-axis rotation and the Y-axis rotation are additionally arranged at the execution terminal, the Z-axis rotation can reach any coordinate point in space (the prior art and the description is omitted), the motor 3 is arranged at the end part of the mechanical arm 2, the polishing head 4 is arranged on an output shaft of the motor 3, and the polishing head 4 is fixed on the output shaft of the motor 3 through bolts and nuts and is convenient to disassemble and replace;

referring to fig. 3, a cylinder body 5 is embedded in a polishing table 1, a linkage rod 6 is movably inserted in the cylinder body 5, a limiting plate 7 is fixedly connected to the outside of the linkage rod 6, a spring 8 is arranged at the bottom of the limiting plate 7, the spring 8 is a compression spring and provides a rebound force for a grinding table 9, the spring 8 is sleeved on the outside of the linkage rod 6, the grinding table 9 is welded at the upper end of the linkage rod 6, linear bearings 19 are mounted at openings at two ends of the cylinder body 5, and the linkage rod 6 is inserted in the linear bearings 19, so that the stability of the linkage rod 6 is improved;

referring to fig. 2, fixing plates 21 are welded to both sides of a grinding table 9, a threaded hole 10 is formed in one side of each fixing plate 21, a screw 11 is connected to an inner thread of the threaded hole 10, a bearing 12 is sleeved at one end of the screw 11, and a clamp plate 13 is welded to an outer ring of the bearing 12 through a steel plate. The screw rod 11 is installed to the one end of screw rod 11 and is held portion 14, is convenient for rotate screw rod 11, and the outside of holding portion 14 has cup jointed rubber sleeve 15, is favorable to improving the travelling comfort of hand. A rubber pad 16 is bonded on one side of the clamping plate 13, and anti-skid lines are arranged on the surface of the rubber pad 16, so that the friction force between the clamping plate 13 and a workpiece is improved, and the workpiece can be prevented from being damaged by the clamping plate 13.

Referring to fig. 1, a limiting rod 17 is welded at the bottom of the polishing platen 9, the limiting rod 17 is movably inserted into a limiting hole 18, and the limiting hole 18 is opened at the top of the polishing platen 1. The angle of the grinding table 9 can be fixed by matching the limiting rod 17 with the limiting hole 18, the linear bearing 19 is arranged in the limiting hole 18, and the limiting rod 17 is inserted into the linear bearing 19, so that the tightness of connection between the limiting rod 17 and the limiting hole 18 is improved. Sealing rings 20 are arranged at two ends of the limiting hole 18 and the cylinder body 5, so that dust can be prevented from entering the limiting hole 18 and the cylinder body 5.

The working principle is as follows: when polishing, place the work piece at the top of grinding table 9, it removes to rotate screw rod 11 and drive splint 13, press from both sides tightly the work piece, then drive 4 pastes on the work piece of head of polishing by robotic arm 2, and extrude the work piece downwards, grinding table 9 moves down, grinding table 9 receives spring 8's resilience force in the cylinder body 5 simultaneously, the work piece pastes the bottom at head of polishing 4 upwards, the invariable reaction force of production can act on work piece and head of polishing 4, make the dynamics of being connected between work piece and the head of polishing 4 balanced, improve the quality of polishing.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a flexible constant force grinds polishing mechanism, includes polishing platform (1), its characterized in that: a mechanical arm (2) is arranged at the top of the polishing table (1), a motor (3) is mounted at the end of the mechanical arm (2), and a polishing head (4) is mounted on an output shaft of the motor (3);

a cylinder body (5) is embedded in the polishing table (1), a linkage rod (6) is movably inserted in the cylinder body (5), a limiting plate (7) is fixedly connected to the outside of the linkage rod (6), a spring (8) is arranged at the bottom of the limiting plate (7), the spring (8) is sleeved on the outside of the linkage rod (6), and a grinding table (9) is welded at the upper end of the linkage rod (6);

the grinding table is characterized in that fixing plates (21) are welded on two sides of the grinding table (9), a threaded hole (10) is formed in one side of each fixing plate (21), a threaded rod (11) is connected to the inner threads of each threaded hole (10), a bearing (12) is sleeved at one end of each threaded rod (11), and a clamping plate (13) is welded to the outer ring of each bearing (12) through a steel plate.

2. The flexible constant force abrasive polishing mechanism of claim 1, wherein: a holding part (14) is installed at one end of the screw rod (11), and a rubber sleeve (15) is sleeved outside the holding part (14).

3. The flexible constant force abrasive polishing mechanism of claim 1, wherein: a rubber pad (16) is bonded to one side of the clamping plate (13), and anti-skid grains are arranged on the surface of the rubber pad (16).

4. The flexible constant force abrasive polishing mechanism of claim 1, wherein: the bottom of the grinding table (9) is welded with a limiting rod (17), the limiting rod (17) is movably inserted into a limiting hole (18), and the limiting hole (18) is arranged at the top of the polishing table (1).

5. The flexible constant force abrasive polishing mechanism of claim 4, wherein: and linear bearings (19) are arranged at the joint of the cylinder body (5) and the linkage rod (6) and in the limiting hole (18).

6. The flexible constant force abrasive polishing mechanism of claim 4, wherein: and sealing rings (20) are arranged at the two ends of the limiting hole (18) and the cylinder body (5).