CN111716209A

CN111716209A - Polishing assembly

Info

Publication number: CN111716209A
Application number: CN202010655657.7A
Authority: CN
Inventors: 任秉文; 金晨辉; 汤杭东; 徐向军
Original assignee: Hengdian Group Innuovo Electric Co Ltd
Current assignee: Hengdian Group Innuovo Electric Co Ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2020-09-29

Abstract

The present invention relates to a polishing assembly. A polishing assembly comprises a fixed frame, wherein a driving motor and a telescopic mechanism are fixed on the fixed frame, a driving wheel is fixed at the output end of the driving motor, the driving wheel is linked with a driven wheel, a polishing abrasive belt in a surrounding shape is sleeved outside the driving wheel and the driven wheel, the telescopic mechanism comprises a fixed part, a movable part and a rotating part, one end of the movable part is located in the fixed part, the other end of the movable part extends out of the fixed part and is linked and fixed with the movable frame, the driven wheel is rotatably fixed on the movable frame, the rotating part can rotate and is connected and fixed with the movable part or the fixed part, the rotating axis of the rotating part is arranged along the telescopic direction of the movable part, the movable frame drives the driven wheel to move under the action of the telescopic mechanism, and the polishing abrasive belt is tightly fixed outside the driving. The invention has the advantages of improving the polishing effect and the polishing efficiency.

Description

Polishing assembly

Technical Field

The invention relates to part processing equipment, in particular to a polishing assembly.

Background

A typical polishing assembly includes a motor and a grinding wheel, and the workpiece surface is polished by the rotating grinding wheel, typically by first fixing the workpiece on a rotating mechanism, then moving the polishing assembly so that the grinding wheel contacts the workpiece surface, then rotating the workpiece, and activating the motor to perform the polishing operation. However, the grinding wheel has low polishing efficiency, and for this reason, some polishing assemblies are a combination of a motor and a polishing belt.

In order to ensure the effective contact between the polishing abrasive belt and the surface of the workpiece, the polishing abrasive belt at the driven wheel is contacted with the surface of the workpiece, and the polishing abrasive belt positioned between the driving wheel and the driven wheel is not contacted with the workpiece. In order to avoid the contact between the driven wheel and the polishing abrasive belt, an annular groove cannot be arranged on the axial surface of the driven wheel to limit the movement of the polishing abrasive belt along the axial direction of the driven wheel, the outer diameters of all parts of the conventional driven wheel are the same, and the polishing abrasive belt is easy to move along the axial direction of the driven wheel.

Some workpiece surfaces are provided with bulges, the side surfaces of the bulges are inclined planes which are inclined relative to the workpiece surfaces, the polishing effect of the inclined planes of the bulges of the workpiece is poor no matter the workpiece surfaces are grinding wheels or polishing abrasive belts, the polishing effect at the inclined planes can reach the specified standard only by carrying out longer polishing operation, but the surface of the workpiece which deviates from the inclined planes is excessively polished.

Some workpieces are formed by welding and fixing a plurality of parts together, and the welding position of the two parts needs to be ground and polished, but the welding position is uneven, the contact surface between a polishing abrasive belt and the welding position is less, and the polishing needs to be carried out for a long time firstly to grind and flatten the welding position and then polish.

Disclosure of Invention

The invention aims to provide a polishing component which can prevent a polishing abrasive belt from deviating and can improve polishing efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme: a polishing assembly comprises a fixed frame, wherein a driving motor and a telescopic mechanism are fixed on the fixed frame, a driving wheel is fixed at the output end of the driving motor, the driving wheel is linked with a driven wheel, a polishing abrasive belt in a surrounding shape is sleeved outside the driving wheel and the driven wheel, the telescopic mechanism comprises a fixed part, a movable part and a rotating part, one end of the movable part is located in the fixed part, the other end of the movable part extends out of the fixed part and is linked and fixed with the movable frame, the driven wheel is rotatably fixed on the movable frame, the rotating part can rotate and is connected and fixed with the movable part or the fixed part, the rotating axis of the rotating part is arranged along the telescopic direction of the movable part, the movable frame drives the driven wheel to move under the action of the telescopic mechanism, and the polishing abrasive belt is tightly fixed outside the driving.

The invention can open the polishing abrasive belt by arranging the telescopic mechanism, and can adjust the tension force of the polishing abrasive belt so as to prevent the polishing abrasive belt from separating from the driven wheel and ensure the polishing effect. And because the rotation part is arranged, the driven wheel can rotate along with the concave-convex of the surface of the workpiece, so that the driven wheel can automatically adjust the angle, the contact area of the polishing abrasive belt at the driven wheel and the welding part is larger, the polishing time is shortened, and the polishing efficiency is improved. Due to the arrangement of the self-rotating part, the polishing device can polish workpieces with inclined surfaces with better effect, and does not worry about excessive polishing.

Preferably, the telescopic mechanism is a cylinder, and one end of the movable part located in the fixed part is connected and fixed with the rotation part. The telescopic mechanism adopts a cylinder, so that the polishing abrasive belt can be prevented from excessively contacting with a workpiece; wherein, the elasticity that the inside gas of cylinder formed is invariable, can not change because of the flexible portion of cylinder is interior how much that contracts, enables polishing process more stable, and polishing effect is better. The air pressure can be adjusted through a precise pressure regulating valve of the air cylinder so as to control the size of the elastic force formed by the air cylinder. The stroke of the cylinder can be adjusted through the middle-sealed three-position five-way valve, so that the stroke of the movable frame and the driven wheel can be adjusted, and the tensioning force of the polishing abrasive belt can be adjusted. Wherein the telescopic mechanism may be a standard double acting cylinder.

Preferably, the rotation part and the movable part are coaxially arranged, the rotation part is rotatably fixed at one end of the movable part, which is positioned outside the fixed part, and is fixed with the movable frame, the rotation structure is matched between one end of the movable part, which is positioned outside the fixed part, and one end of the rotation part, which is far away from the movable frame, and comprises an annular groove and an annular protrusion positioned in the annular groove. The rotation part can be limited to move circumferentially relative to the fixing part by the arrangement of the rotating structure, and the polishing effect can be guaranteed.

Preferably, a fixed block is fixed at one end of the movable part, which is located outside the fixed part, the rotating structure is arranged between the circumferential side wall of the fixed block and the circumferential side wall of the rotation part, a plane bearing is fixed in the fixed block, the plane bearing is in contact with the rotation part, and the plane bearing is located between the movable part and the rotation part. The fixed block is more convenient to assemble due to the arrangement of the telescopic mechanism, wherein the fixed block can be fixedly connected with the movable part in a riveting or other mode. And the arrangement of the plane bearing can reduce the friction force when the rotation part rotates so as to ensure the reporting effect.

Preferably, the fixing block is provided with a through hole for the rotation part to pass through, the inner wall of the through hole extends to the circumferential outer side to form the annular groove, the plane bearing is located in the through hole, and the annular protrusion is arranged on the rotation part located in the through hole.

Preferably, the driven wheel and/or the driving wheel has a surface for contacting with the polishing belt, the middle of which extends to the circumferential outer side, so that the cross section of the surface for contacting with the polishing belt is arranged in a V shape or a circular arc shape. When the polishing abrasive belt is spread, the left and right movement of the polishing abrasive belt is limited due to the outward bulge of the middle part of the surface of the driven wheel or the driving wheel, so that the polishing abrasive belt is further prevented from being separated from the driven wheel.

The invention has the advantages of improving the polishing effect and the polishing efficiency.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view of the driven wheel of the present invention;

FIG. 3 is another telescoping mechanism of the present invention;

fig. 4 is an enlarged view of the rotation structure of fig. 3.

Detailed Description

The invention is further described below with reference to the figures and specific embodiments.

Example 1

As shown in figures 1 and 2, the polishing assembly of the invention comprises a fixed frame, the fixed frame is composed of a fixed frame body 1 and a downwardly extending connecting frame 2, a driving motor 3 is fixed on the fixed frame body 1, a telescopic mechanism 4 is fixed at the lower end of the connecting frame 2, a driving wheel 31 is fixed at the output end of the driving motor 3, the driving wheel 31 is linked with a driven wheel 32, a polishing abrasive belt 33 in a surrounding shape is sleeved outside the driving wheel 31 and the driven wheel 32, the telescopic mechanism 4 comprises a fixed part 41, a movable part 42 and a self-rotating part, one end of the movable part 42 is positioned in the fixed part 41, the other end of the movable part 42 extends out of the fixed part 41 and is linked and fixed with the movable frame 5, the movable frame 5 is in an n-shaped structure, the driven wheel 32 is rotatably fixed on the movable frame 5, the self-rotating part can rotate relative to the fixed part 41 and is connected and fixed with the, the movable frame 5 drives the driven wheel 32 to move linearly under the action of the telescopic mechanism 4, and the polishing abrasive belt 33 is tightly fixed outside the driving wheel 31 and the driven wheel 32.

Wherein the middle part of the surface of the driven wheel 32 for contacting the sanding belt 33 extends to the circumferential outside, so that the cross section of the surface of the driven wheel 32 for contacting the sanding belt 33 is arranged in a V shape. The telescoping mechanism 4 of this embodiment is a cylinder, and one end of the movable part 42 located in the fixed part is connected and fixed with the rotation part, and the movable part of the cylinder can rotate relative to the fixed part.

Example 2

As shown in fig. 3 and 4, the present embodiment is different from embodiment 1 in that: the telescoping mechanism is different. The telescoping mechanism of the present embodiment may employ an electric push rod.

The rotation part 43 and the movable part 42 (the top pipe of the electric push rod) are coaxially arranged, the rotation part 43 can be rotatably fixed at one end of the movable part 42, which is positioned outside the fixed part 41 (the top pipe of the electric push rod), and is fixed with the movable frame 5, the rotation structure is matched between one end of the movable part 42, which is positioned outside the fixed part 41, and one end of the rotation part 43, which is far away from the movable frame 5, and comprises an annular groove 61 and an annular protrusion 62 positioned in the annular groove 61.

A fixed block 6 is fixed at one end of the movable part 42 positioned outside the fixed part 41, the rotating structure is arranged between the circumferential side wall of the fixed block 6 and the circumferential side wall of the self-rotating part 43, a plane bearing 63 is fixed in the fixed block 6, the plane bearing 63 is in contact with the self-rotating part 43, and the plane bearing 63 is positioned between the movable part 42 and the self-rotating part 43. The fixing block 6 is provided with a through hole for the rotation part 43 to pass through, the inner wall of the through hole extends to the circumferential outer side to form the annular groove 61, the plane bearing 63 is positioned in the through hole, and the part of the rotation part 43 positioned in the through hole is provided with the annular protrusion 62.

The invention can be used for polishing the welding position of the end socket and the barrel of the pressure container, the connecting frame is extended into the pressure container to enable the polishing abrasive belt at the driven wheel to be contacted with the position to be polished on the inner wall of the pressure container, then the driving motor is started, and the pressure container rotates under the action of other equipment.

Claims

1. A polishing assembly is characterized by comprising a fixed frame, wherein a driving motor and a telescopic mechanism are fixed on the fixed frame, a driving wheel is fixed at the output end of the driving motor, the driving wheel is linked with a driven wheel, a polishing abrasive belt in a surrounding shape is sleeved outside the driving wheel and the driven wheel, the telescopic mechanism comprises a fixed portion, a movable portion and a rotating portion, one end of the movable portion is located in the fixed portion, the other end of the movable portion extends out of the fixed portion and is linked and fixed with the movable frame, the driven wheel is rotatably fixed on the movable frame, the rotating portion can rotate and is connected and fixed with the movable portion or the fixed portion, the rotating axis of the rotating portion is arranged along the telescopic direction of the movable portion, the movable frame drives the driven wheel to move under the action of the telescopic mechanism, and the polishing abrasive belt is tightly fixed outside the driving.

2. The polishing assembly of claim 1, wherein the retractable mechanism is a cylinder, and the movable portion is connected to the rotation portion at an end thereof located in the fixed portion.

3. The polishing assembly of claim 1, wherein the rotation portion is coaxially disposed with the movable portion, the rotation portion is rotatably fixed to an end of the movable portion outside the fixed portion and fixed to the movable frame, the end of the movable portion outside the fixed portion and an end of the rotation portion away from the movable frame are configured to cooperate with each other, and the rotation structure includes an annular groove and an annular protrusion inside the annular groove.

4. The polishing assembly as recited in claim 1, wherein a fixed block is fixed to an end of the movable portion outside the fixed portion, the rotational structure is disposed between a circumferential sidewall of the fixed block and a circumferential sidewall of the rotation portion, a flat bearing is fixed to the fixed block, the flat bearing contacts the rotation portion, and the flat bearing is disposed between the movable portion and the rotation portion.

5. The polishing assembly as set forth in claim 4, wherein the fixing block is provided with a through hole through which the rotation part passes, an inner wall of the through hole extending to a circumferential outer side to form the annular groove, and the flat bearing is located in the through hole, and a portion of the rotation part located in the through hole is provided with the annular protrusion.

6. A polishing assembly according to claim 1, characterized in that the driven wheel and/or the driving wheel has/have a surface for contact with the polishing belt extending centrally to the circumferential outside, so that the surface for contact with the polishing belt is provided with a V-shaped or circular-arc-shaped cross-section.