Automatic flexible grinding and polishing device

Abstract

The utility model belongs to the technical field of aviation numerical control machining, and relates to an automatic flexible grinding and polishing device which comprises a cutter bar, a main plate, a support, a driving wheel, a pneumatic motor, an abrasive paper belt, a driven wheel and a spring, one end of the cutter bar is installed on the main plate, the pneumatic motor is installed at the lower end of the main plate, and a rotating shaft of the pneumatic motor is connected with the driving wheel. The middle of the support is rotationally installed on the main plate through a rotating shaft, one end of the support is connected with the main plate through a spring, the other end of the support is provided with a rotatable driven wheel, and the driven wheel is connected with the driving wheel through an abrasive paper belt.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation numerical control processing, and relates to an automatic flexible polishing device, which is a tooling design and processing for polishing the outer circle of a rotating body part. Background Art

[0002] The outer diameter of a piston rod serves as a moving mating surface, requiring both good wear resistance and low friction. During the component design, a hard-anodized aluminum alloy was chosen to address wear resistance. However, the roughness of the hardened outer diameter was poor, failing to meet the design requirements and preventing flexible movement. This required improvement.

[0003] The current method for improving the roughness of hard-anodized aluminum alloys involves clamping the part on a manual lathe, rotating the spindle at high speed, and then polishing with a handheld polishing medium in a reciprocating motion to increase surface roughness. This process is rigid grinding, resulting in significant part runout. Furthermore, due to the random nature of manual polishing, the roughness of the polished outer diameter is uneven, with significant local deviations.

[0004] The above-mentioned manual polishing method is not only inefficient and requires high worker skills and responsibility, but also has high labor intensity and poor quality consistency. Therefore, it is urgent to research and develop a tool that can replace manual operation with a motorized device. Utility Model Content

[0005] The technical problem solved by the utility model is: The utility model provides an automated flexible grinding and polishing device to replace manual polishing, reduce labor intensity, improve production efficiency, and improve quality consistency.

[0006] The technical solution of the utility model

[0007] An automated flexible polishing device comprises a cutter bar 1, a main board 2, a bracket 3, a driving wheel 4, an air motor 5, a sandpaper belt 7, a driven wheel 8, and a spring 9. One end of the cutter bar 1 is mounted on the main board 2, and the air motor 5 is mounted at the lower end of the main board 2. The rotating shaft of the air motor 5 is connected to the driving wheel 4 to drive the driving wheel 4 to rotate. The middle part of the bracket 3 is rotatably mounted on the main board 2 via a rotating shaft 1.1. One end of the bracket 3 is connected to the main board 2 via a spring 9, and a rotatable driven wheel 8 is mounted on the other end. The driven wheel 8 and the driving wheel 4 are connected via a sandpaper belt 7.

[0008] Furthermore, one end of the bracket 3 is connected to the screw 6 on the mainboard 2 through a spring.

[0009] Furthermore, a shaft 11 is mounted on the other end of the bracket, a bearing 10 is press-fitted onto the shaft 11 with an interference fit, and the driven wheel 8 is mounted on the bearing 10 .

[0010] Furthermore, the other end of the tool rod 1 is connected to the turret of the CNC machine tool.

[0011] Furthermore, a groove for mounting the sandpaper belt 7 is provided on the outer circumferential surface of the driving wheel 4 , and the depth of the groove is greater than the thickness of the sandpaper belt 7 .

[0012] Furthermore, a groove for mounting the sandpaper belt 7 is provided on the outer circumferential surface of the driven wheel 8 , and the depth of the groove is greater than the thickness of the sandpaper belt 7 .

[0013] Beneficial effects

[0014] The utility model proposes an automated flexible grinding and polishing device, which is a tooling design and processing for grinding and polishing the outer circle of rotating parts. The device combines the adjustable spindle speed, controllable cutting depth, and adjustable feed speed functions of a CNC lathe, adopts a pneumatic motor as the input power of the device, and is designed to drive the driven wheel by the driving wheel to realize high-precision automatic grinding and polishing of the outer circle of the part through the sandpaper belt.

[0015] This device effectively replaces manual operations, reduces labor intensity, increases production efficiency by more than 100%, and has high quality consistency, making it highly valuable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main view of the utility model;

[0017] Figure 2 It is a side view of the utility model. DETAILED DESCRIPTION

[0018] The features and illustrative embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific arrangement and method proposed below, but rather encompasses any improvements, replacements, and modifications to structures, methods, and devices without departing from the spirit of the present invention. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessary ambiguity in the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other, and the embodiments can refer to and quote each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] Figure 1 It is a schematic diagram of an automated flexible polishing device and a processing method according to the present invention.

[0021] refer to Figure 1 , tool bar 1, main board 2, bracket 3, driving wheel 4, air motor 5, screw 6, sandpaper belt 7, driven wheel 8, spring 9, bearing 10, shaft 11. Among them, one end of the tool bar 1 is mounted on the main board 2, and the other end is connected to the turret of the CNC machine tool. The air motor 5 is mounted on the lower end of the main board 2. The rotating shaft of the air motor 5 is connected to the driving wheel 4 to drive the driving wheel 4 to rotate. The middle part of the bracket 3 is rotatably mounted on the main board 2 through the rotating shaft 1.1. A screw 1.2 is provided at one end of the bracket 3. The screw 1.2 is connected to the screw 6 on the main board 2 through a spring 9. A shaft 11 is installed at the other end of the bracket 3. The bearing 10 is press-fitted to the shaft 11 with an interference fit. The driven wheel 8 is mounted on the bearing 10. The driven wheel 8 and the driving wheel 4 are connected by the sandpaper belt 7.

[0022] Among them, the tool rod 1 and the main board 2 are fixed by screws 6, and the other end of the tool rod 1 can be fixed on the tool holder of a CNC machine tool to realize the grinding and polishing function of similar parts, with strong versatility.

[0023] The mainboard 2 is connected to the middle of the bracket 3 via the rotating shaft 1.1, so that the bracket can rotate around the rotating shaft 1.1.

[0024] The pneumatic motor 5 is screwed to the rear of the mainboard 2, and the driven pulley 8 is press-fitted onto the bearing 10 of the bracket 3, enabling flexible rotation. The driving pulley 4 uses the pneumatic motor 5 as its power input, which, compared to an electric motor, prevents machine tool cutting fluid from entering the circuit, providing increased safety.

[0025] The utility model is equipped with a spring 9, which meets the flexibility requirement during the processing, and the elastic force of the spring 9 should be selected to be moderate. If the elastic force is too large, the sandpaper will be easily burned, and if the elastic force is too small, the processing function cannot be achieved.

[0026] A sandpaper belt 7 is installed between the driving wheel 4 and the driven wheel 8. The toughness and cutting ability of the selected sandpaper belt 7 should be able to meet the roughness requirement of Ra0.2 after processing.

[0027] The driving wheel 4 and the driven wheel 8 for installing the sandpaper 7 are provided with a mounting groove, the depth of which is greater than the thickness of the sandpaper 7 to ensure that the sandpaper 7 will not fall out.

[0028] Bearings are installed inside the driving wheel 4 and the driven wheel 8 to enable them to rotate flexibly.

[0029] The bracket 3 is connected to the screw 6 through the spring 9 to tighten the sandpaper belt 7 installed between the driving wheel 4 and the driven wheel 8. When the sandpaper belt 7 cuts the workpiece, a flexible force is generated. Through flexible grinding, during the polishing process, the sandpaper belt 7 can be ensured to always be in contact with the part, the part runout is small, the roughness of the outer circle after polishing is uniform, and the local deviation is small.

[0030] After the above components are installed, the tool rod 1 is installed on the machine tool turret, and the pneumatic motor 5 is connected to the air source to drive the sandpaper belt 7 to rotate at high speed to grind and polish the outer circle of the workpiece, thereby replacing manual processing with motorized processing and achieving consistency and stability in the surface quality of the parts.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should all be covered by the scope of protection of the present invention.

Claims

1. An automated flexible polishing device, characterized in that: It includes a knife bar, a main board, a bracket, a driving wheel, an air motor, a sandpaper belt, a driven wheel, and a spring. One end of the knife bar is installed on the main board, and the air motor is installed at the lower end of the main board. The rotating shaft of the air motor is connected to the driving wheel to drive the driving wheel to rotate. The middle part of the bracket is rotatably installed on the main board through the rotating shaft. One end of the bracket is connected to the main board through a spring, and a rotatable driven wheel is installed on the other end. The driven wheel and the driving wheel are connected by a sandpaper belt.

2. An automated flexible polishing device according to claim 1, characterized in that: One end of the bracket is connected to the screw on the mainboard through a spring.

3. An automated flexible polishing device according to claim 2, characterized in that: A shaft is installed at the other end of the bracket, a bearing is press-fitted to the shaft through interference fit, and a driven wheel is installed on the bearing.

4. The automatic flexible polishing device according to claim 1, characterized in that: The other end of the tool bar is connected to the turret of the CNC machine tool.

5. The automatic flexible polishing device according to claim 1, characterized in that: A groove for installing a sandpaper belt is arranged on the outer circumference of the driving wheel, and the depth of the groove is greater than the thickness of the sandpaper belt.

6. An automated flexible polishing device according to claim 5, characterized in that: A groove for installing a sandpaper belt is arranged on the outer circumference of the driven wheel, and the depth of the groove is greater than the thickness of the sandpaper belt.

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