CN114406902A

CN114406902A - Constant-force grinding device

Info

Publication number: CN114406902A
Application number: CN202210072426.2A
Authority: CN
Inventors: 王红波; 郑宁夏
Original assignee: Wuxi Stial Technologies Co ltd
Current assignee: Wuxi Stial Technologies Co ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-04-29

Abstract

The invention relates to a constant-force polishing device which comprises a proportional control valve, an electromagnetic valve and an air cylinder, wherein the proportional control valve is connected with the air cylinder through the electromagnetic valve; the lifting support is slidably arranged on the guide support and is positioned on two sides of the cylinder; the polishing seat is fixed on the lifting bracket; the control panel is fixed on the connecting seat or the guide bracket and is electrically connected with the proportional control valve and the electromagnetic valve; the both ends of flexible dust cover are connected with connecting seat and the seat of polishing respectively. The constant-force grinding device can adjust the distance between a grinding wheel and the surface of a workpiece in real time, realizes constant-force grinding, enables the grinding quality to be stable and reliable, reduces the requirement on the consistency of the workpiece, improves the grinding efficiency, reduces the preparation work in the early stage, and reduces the grinding cost.

Description

Constant-force grinding device

Technical Field

The invention relates to a polishing device, in particular to a constant-force polishing device.

Background

In order to improve the grinding efficiency and the grinding quality, the mechanical arm is increasingly adopted for grinding. And when the manipulator polishes, polishing the workpiece according to a preset polishing track. The grinding mode has higher requirement on the consistency of the workpiece, the size deviation of the workpiece cannot be overlarge, for example, the pressure of the manipulator is larger when the workpiece is ground when the size is overlarge, the manipulator is easy to damage, and the workpiece cannot be ground when the size is overlarge. And along with the wearing and tearing of the emery wheel of polishing, the distance grow between emery wheel and the work piece, but the orbit of polishing is according to invariable interval setting of polishing, causes the quality that polishes after the emery wheel wearing and tearing of polishing to be unsatisfactory.

Disclosure of Invention

In order to solve the problems, the invention provides a constant-force grinding device which can lead a grinding wheel to be always contacted with a grinding surface of a workpiece according to the actual grinding condition by automatically controlling the pressure, and has stable and reliable grinding quality, and the specific technical scheme is as follows:

the utility model provides a constant force grinding device, includes proportional control valve, solenoid valve and cylinder, the proportional control valve passes through the solenoid valve with the cylinder is connected, still includes: the proportional control valve and the air cylinder are fixed on the connecting seat; the guide bracket is fixed on the connecting seat; the lifting support is slidably mounted on the guide support and is positioned on two sides of the air cylinder; the polishing seat is fixed on the lifting bracket; the control panel is fixed on the connecting seat or the guide bracket and is electrically connected with the proportional control valve and the electromagnetic valve; and two ends of the telescopic dust cover are respectively connected with the connecting seat and the polishing seat.

Preferably, the method further comprises the following steps: the displacement sensor is arranged on the guide bracket and is electrically connected with the control panel; and the induction magnet is fixed on the lifting support and is arranged opposite to the displacement sensor.

Preferably, the gyroscope is further included, and the gyroscope is fixed on the connecting seat or the guide support and electrically connected with the control board.

Furthermore, the gyroscope further comprises a connecting plate, an upper fixing plate is arranged at the top of the connecting plate, the connecting plate is fixed on the guide support, the gyroscope is fixed on the upper fixing plate, and the control panel is fixed on the connecting plate.

Preferably, the method further comprises the following steps: the lifting joint is fixed on a piston rod of the air cylinder, and a lifting ring is arranged on the lifting joint; the polishing device comprises a polishing seat and a lifting seat, wherein the polishing seat is arranged on the polishing seat, the lifting seat is provided with a U-shaped lifting slot, and the lifting joint and the lifting ring are inserted into the lifting slot.

Preferably, the method further comprises the following steps: the first joint is arranged at one end of the air inlet hole of the connecting seat; the second joint is arranged at the other end of the air inlet of the connecting seat and communicated with the first joint, and the second joint is connected with the proportional control valve; and the silencer is fixed on the air outlet of the connecting seat.

Furthermore, the multi-core connector is arranged on the wiring hole of the connecting seat.

Furthermore, the air cylinder further comprises a top fixing plate, wherein the top fixing plate is fixed at the top of the air cylinder and is installed on the connecting seat.

Preferably, the dustproof cover further comprises a protection cylinder, the top of the protection cylinder is fixed on the connecting seat, the proportional control valve and the control panel are both located in the protection cylinder, and the bottom of the protection cylinder is connected with the telescopic dustproof cover.

Furthermore, the bottom of a protection cylinder is provided with a first fixing groove, the polishing seat is provided with a second fixing groove, the first fixing groove and the second fixing groove are annular grooves, and two ends of the telescopic dust cover are fixed in the first fixing groove and the second fixing groove respectively.

Compared with the prior art, the invention has the following beneficial effects:

the constant-force grinding device provided by the invention realizes constant-force grinding by controlling grinding pressure in real time, so that a grinding wheel is always pressed on the surface of a workpiece to grind, the distance between the grinding wheel and the surface of the workpiece can be adjusted in real time, the grinding quality is stable and reliable, the requirement on the consistency of the workpiece is reduced, the grinding efficiency is improved, the early-stage preparation work is reduced, and the grinding cost is reduced.

Drawings

FIG. 1 is a schematic diagram of a constant force sander;

FIG. 2 is a schematic view of a constant force sander with a protective canister and a retractable dust cover concealed;

FIG. 3 is a front view of a constant force sander with a concealed protective sleeve and a telescoping dust cover;

FIG. 4 is a rear view of a constant force sander with the protective barrel and the telescoping dust cap concealed;

FIG. 5 is an exploded view of a constant force sander with a concealed guard barrel and a telescoping dust shield;

FIG. 6 is a connecting socket of a constant force polishing apparatus;

fig. 7 is a schematic structural view of the shield cylinder.

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

As shown in fig. 1 to 7, the constant force polishing device comprises a proportional control valve 31, a cylinder 7, a connecting seat 1, a guide bracket 41, a lifting bracket 43, a polishing seat 2, a control plate 51, a protective cylinder 81 and a telescopic dust cover 82.

The top of the connecting base 1 is provided with a connecting head 10 for connecting with a manipulator. The outer circular surface of the connecting base 1 is provided with a wiring hole 11, an air inlet hole 12 and an air outlet hole 13, and the wiring hole 11, the air inlet hole 12 and the air outlet hole 13 are communicated with the bottom of the connecting base 1. The first and

second joints

35 and 37 are installed at both ends of the intake hole 12, respectively. The second connector 37 is connected to the proportional control valve 31 through a gas line. The multi-core connector 57 is mounted on the wiring hole 11, the multi-core connector 57 is connected with the control board 51, and the control board 51 is mounted on the connecting board 52. The wiring holes 11, the air inlet holes 12 and the air outlet holes 13 are convenient for wiring and piping.

Guide bracket 41 and lifting support 43 are the U-shaped, and guide bracket 41 is fixed in the bottom of connecting seat 1, and lifting support 43 passes through linear guide pair and guide bracket 41 sliding connection, and the base 2 of polishing is equipped with to lifting support 43's bottom, and the base 2 of polishing is used for installing the polisher. Two linear guide rail pairs are symmetrically arranged, so that the stress is uniform, the stability and the reliability are improved, the polishing seat 2 is lifted along the axial direction, the friction force is small, and the pressure during polishing can be accurately controlled. The center of the top of the guide bracket 41 is provided with a first through hole 412 and a positioning slot 411, and the positioning slot 411 is communicated with the first through hole 412. The coupling plate 52 is mounted on the guide bracket 41.

The top fixing plate 71 is mounted on the top of the cylinder 7, the top fixing plate 71 is fixed in the positioning slot 411 through a screw, and the top of the cylinder 7 is inserted in the first through hole 412. The top fixing plate 71 facilitates the installation of the cylinder 7. The cylinder 7 is easily installed by the top fixing plate 71 and the screws because of the compact structure and the limited inner space. The piston rod of cylinder 7 is equipped with lifting joint 72, and the bottom of lifting joint 72 is equipped with lift ring 73, and the diameter of lift ring 73 is greater than the diameter of lifting joint 72, and lift ring 73 is installed in the lift slot 75 of lift seat 74, and lift slot 75 is the U-shaped, and lift seat 74 is fixed at the top of seat 2 of polishing, and lifting joint 72 and lift seat 74 make things convenient for cylinder 7 to be connected with seat 2 of polishing.

The solenoid valve 33 is mounted on a second fixing plate 34, and the second fixing plate 34 is L-shaped and mounted on the guide bracket 41. The proportional control valve 31 is mounted on a valve plate 32, and the valve plate 32 is fixed on the bottom of the connecting socket 1 and is located at one side of the guide bracket 41. Two quick connectors are arranged on the valve plate 32, one quick connector is connected with the second connector 37 through an air pipe, the other quick connector is connected with the electromagnetic valve 33 through an air pipe, and the electromagnetic valve 33 is connected with the air cylinder 7 through an air pipe. The control plate 51 is electrically connected to the proportional control valve 31 and the solenoid valve 33.

The top of the protective cylinder 81 is fixed on the connecting seat 1 through threads, and the proportional control valve 31 and the control panel 51 are both positioned in the protective cylinder 81. The protective tube 81 is an iron tube and can protect internal components. The bottom of a protection section of thick bamboo 81 is equipped with first fixed slot 811, is equipped with second fixed slot 21 on the seat of polishing 2, and first fixed slot 811 and second fixed slot 21 are the ring channel, and the both ends of flexible dust cover 82 are fixed respectively in first fixed slot 811 and second fixed slot 21. The telescopic dust cover 82 is more securely fixed by the first fixing groove 811 and the second fixing groove 21. The telescopic dust cover 82 can prevent dust and simultaneously facilitates the lifting of the polishing seat 2.

During operation, the output pressure of the proportional control valve 31 is set, the manipulator drives the grinding machine to grind along a set track, the air cylinder 7 presses the grinding machine on the surface of a workpiece, the proportional control valve 31 controls the pressure to enable the grinding machine to press on the surface of the workpiece at a constant pressure to grind, when a grinding wheel of the grinding machine is not in contact with the surface of the workpiece, the air cylinder 7 automatically extends out until the grinding wheel is pressed on the workpiece at the set pressure, if the force of the grinding machine on pressing the workpiece is increased, the proportional control valve 31 automatically reduces the pressure, the electromagnetic valve 33 is switched to enable the air cylinder 7 to retract, and adaptive adjustment of the pressure of the grinding machine is achieved.

In order to improve the reliability and precision of the control, the gyroscope 54 is further included, the gyroscope 54 is fixed on the upper fixing plate 53 on the top of the connecting plate 52, and the gyroscope 54 is electrically connected with the control board 51. The gyroscope 54 feeds back the real-time status of the sander.

In order to improve the position precision of the control polisher, the control polisher further comprises a displacement sensor 58 and an induction magnet 59, the displacement sensor 58 is of a magnetic induction type, the displacement sensor 58 is installed on one side of the guide support 41, the induction magnet 59 is fixed on the lifting support 43 and is arranged opposite to the displacement sensor 58 and used for detecting the position of the polishing seat 2 relative to the original point in real time, so that the position feedback of the polishing head is achieved, the high-precision position and the polishing force can be controlled in combination with the polishing force feedback, and the stability and the reliability of the polishing quality are guaranteed.

For convenience of wiring, a terminal block 55 is further included, the terminal block 55 is mounted on the connector holder 1 through a third fixing plate 56, and the control board 51 is connected to the multi-core connector 57, the solenoid valve 33, the proportional control valve 31, and the gyroscope 54 through the terminal block 55.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, which shall fall within the scope of the appended claims.

Claims

1. The utility model provides a constant force grinding device, includes proportional control valve (31), solenoid valve (33) and cylinder (7), proportional control valve (31) pass through solenoid valve (33) with cylinder (7) are connected, its characterized in that still includes:

the connecting seat (1), the proportional control valve (31) and the air cylinder (7) are fixed on the connecting seat (1);

the guide bracket (41), the said guide bracket (41) is fixed on said connecting seat (1);

the lifting support (43) is slidably mounted on the guide support (41) and is positioned on two sides of the air cylinder (7);

the polishing seat (2) is fixed on the lifting support (43);

the control plate (51), the control plate (51) is fixed on the connecting seat (1) or the guide bracket (41), and the control plate (51) is electrically connected with the proportional control valve (31) and the electromagnetic valve (33); and

the two ends of the telescopic dust cover (82) are respectively connected with the connecting seat (1) and the polishing seat (2).

2. A constant force sharpening device according to claim 1, further comprising:

the displacement sensor (58) is installed on the guide bracket (41), and the displacement sensor (58) is electrically connected with the control plate (51); and

and the induction magnet (59) is fixed on the lifting bracket (43) and is opposite to the displacement sensor (58).

3. A constant force sharpening device according to claim 1, further comprising a gyroscope (54), wherein the gyroscope (54) is fixed on the connecting seat (1) or the guide bracket (41) and is electrically connected with the control board (51).

4. A constant-force grinding device according to claim 3, further comprising a connecting plate (52), wherein an upper fixing plate (53) is arranged on the top of the connecting plate (52), the connecting plate (52) is fixed on the guide bracket (41), the gyroscope (54) is fixed on the upper fixing plate (53), and the control plate (51) is fixed on the connecting plate (52).

5. A constant force sharpening device according to any of claims 1 to 4, further comprising:

the lifting joint (72) is fixed on a piston rod of the air cylinder (7), and a lifting ring (73) is arranged on the lifting joint (72); and

the polishing device comprises a lifting seat (74), wherein the lifting seat (74) is installed on the polishing seat (2), a U-shaped lifting slot (75) is formed in the lifting seat (74), and the lifting joint (72) and the lifting ring (73) are inserted into the lifting slot (75).

6. A constant force sharpening device according to any of claims 1 to 4, further comprising:

the first joint (35), the first joint (35) is installed at one end of the air inlet hole (12) of the connecting seat (1);

the second joint (37), the said second joint (37) is installed in another end of the said air intake hole (12), and communicate with said first joint (35), the said second joint (37) is connected with said proportional control valve (31); and

the silencer (36), the silencer (36) is fixed on the venthole (13) of the connecting seat (1).

7. A constant force sharpening device according to any one of claims 1 to 4, further comprising a multi-core connector (57), said multi-core connector (57) being mounted on a wiring hole (11) of said connection holder (1).

8. A constant-force sharpening device according to any one of claims 1-4, further comprising a top fixing plate (71), wherein the top fixing plate (71) is fixed on the top of the cylinder (7) and is mounted on the connecting seat (1).

9. A constant-force grinding device according to any one of claims 1 to 4, characterized by further comprising a protective cylinder (81), wherein the top of the protective cylinder (81) is fixed on the connecting seat (1), the proportional control valve (31) and the control plate (51) are both positioned in the protective cylinder (81), and the bottom of the protective cylinder (81) is connected with the telescopic dust cover (82).

10. A constant-force grinding device according to claim 9, wherein a first fixing groove (811) is formed at the bottom of the protective cylinder (81), a second fixing groove (21) is formed on the grinding base (2), the first fixing groove (811) and the second fixing groove (21) are both annular grooves, and both ends of the telescopic dust cover (82) are fixed in the first fixing groove (811) and the second fixing groove (21), respectively.