Straightening device based on differential roller group

Abstract

This invention relates to a straightening device based on differential roller sets, comprising a drive unit, a transmission unit, a low-speed roller set, a high-speed roller set, and a machine body; the drive unit, transmission unit, low-speed roller set, and high-speed roller set are all mounted on the machine body; the invention has a simple mechanism and achieves dual straightening through roll pressing and stretching without providing an additional straightening device, significantly improving work efficiency and processing accuracy, enhancing product quality, reducing the scrap rate to less than 0.5%, and simplifying the processing technology.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and particularly to the field of workpiece straightening and shaping technology, specifically providing a straightening device based on a differential roller set. Background Technology

[0002] Metal workpieces (such as bars and tubes) are widely used in the aerospace field, and their machining accuracy, especially straightness, directly affects the finished product quality of blanks and parts, as well as processing efficiency.

[0003] For example, when used in aviation radiator products, surface deformation and axial bending occur during processing. The current method is for operators to manually round and straighten the workpiece (aluminum tube), which has the disadvantages of high labor intensity, low production efficiency, and poor product reliability. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problems of straightening and shaping pipes, bars, and rolls.

[0005] The technical solution of this invention is:

[0006] A straightening device based on differential roller sets is provided, including a drive unit, a transmission unit, a low-speed roller set, a high-speed roller set, and a machine body;

[0007] The drive unit, transmission unit, low-speed roller set, and high-speed roller set are all mounted on the machine body;

[0008] The drive device drives the low-speed roller group and the high-speed roller group to rotate through the transmission device;

[0009] The low-speed roller set and the high-speed roller set have the same structure, both including two roller pairs. The two rollers are in the same plane and are symmetrically arranged about the straight line. The outer edges of the two rollers are tangent to each other. Under the drive of the drive device, the two roller pairs rotate in opposite directions. The outer edges of the two rollers are each provided with annular grooves. At the tangent position, the annular grooves of the two rollers form a pressing part.

[0010] The straight lines for straightening the low-speed roller group and the high-speed roller group are the same straight line, and there is a distance L between the low-speed roller group and the high-speed roller group on the straight line.

[0011] The low-speed roller group rotates at a slower speed than the high-speed roller group. For the workpiece to be straightened, the low-speed roller group is positioned before the high-speed roller group. When the workpiece to be straightened is simultaneously located in the extrusion section of both the low-speed roller group and the high-speed roller group, the high-speed roller group forms a linear pulling force on the workpiece to be straightened based on the rotational speed of the high-speed roller group.

[0012] Furthermore, the transmission device has different transmission ratios for the low-speed roller group and the high-speed roller group, and the roller diameters of the low-speed roller group and the high-speed roller group are the same.

[0013] Furthermore, the transmission device has the same transmission ratio for the low-speed roller group and the high-speed roller group, and the roller diameter of the high-speed roller group is larger than that of the low-speed roller group.

[0014] Furthermore, the transmission device is a gear meshing mechanism, a transmission pulley mechanism, or a worm gear mechanism.

[0015] Furthermore, the plane containing the rollers in the low-speed roller group has an angle α with the plane containing the rollers in the high-speed roller group, where 0 < α ≤ 90°.

[0016] Furthermore, the distance L is less than the length of the workpiece to be processed. Preferably, the distance L is inversely proportional to the material density of the workpiece and directly proportional to the diameter of the workpiece. Preferably, the value of the distance L ranges from 100mm to 200mm.

[0017] Furthermore, it also includes a guiding device, which is arranged along the straight line between the low-speed roller group and the high-speed roller group. This device provides support for the workpiece to be processed, allowing it to smoothly enter the extrusion section of the high-speed roller group.

[0018] The above-mentioned device provides a straightening method in which the workpiece to be processed is first inserted into the extrusion section of the low-speed roller group along the straightening line. Under the drive of the rollers of the low-speed roller group, the workpiece to be processed is guided into the extrusion section of the high-speed roller group, so that the workpiece to be processed is straightened under the rolling pressure of the two sets of rollers and the linear tension of the high-speed roller.

[0019] The advantages of this invention are: the invention has a simple mechanism, and achieves dual straightening of roll straightening and stretch straightening without providing an additional straightening device, which significantly improves work efficiency and processing accuracy, enhances product quality, reduces the scrap rate to less than 0.5%, and simplifies the processing technology. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structural principle of this technical solution (showing the drive connection of the high-speed roller assembly);

[0021] Figure 2 This is a schematic diagram of the structural principle of this technical solution (showing the drive connection of the low-speed roller group);

[0022] Figure 3 This is a schematic diagram of the structure of this technical solution;

[0023] Figure 4 This is a cross-sectional view of the extrusion section;

[0024] Figure 5 This is a schematic diagram of the low-speed roller group and the high-speed roller group in Example 2;

[0025] In the diagram: 1 - drive unit, 2 - transmission unit, 3 - low-speed roller group, 4 - high-speed roller group, 5 - workpiece with straightening belt, 6 - machine body, 7 - guide device. Detailed Implementation

[0026] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.

[0027] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited in each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Example 1, see Figure 1 - 4, Provide a straightening device based on differential roller sets, including a drive unit, a transmission unit, a low-speed roller set, a high-speed roller set, and a machine body;

[0029] The drive unit, transmission unit, low-speed roller set, and high-speed roller set are all mounted on the machine body;

[0030] The drive device drives the low-speed roller group and the high-speed roller group to rotate through the transmission device;

[0031] The low-speed roller set and the high-speed roller set have the same structure, both including two roller pairs. The two rollers are in the same plane and are symmetrically arranged about the straight line. The outer edges of the two rollers are tangent to each other. Under the drive of the drive device, the two roller pairs rotate in opposite directions. The outer edges of the two rollers are each provided with annular grooves. At the tangent position, the annular grooves of the two rollers form a pressing part.

[0032] The straight lines for straightening the low-speed roller group and the high-speed roller group are the same straight line, and there is a distance L between the low-speed roller group and the high-speed roller group on the straight line.

[0033] The low-speed roller group rotates at a slower speed than the high-speed roller group. For the workpiece to be straightened, the low-speed roller group is positioned before the high-speed roller group. When the workpiece to be straightened is simultaneously located in the extrusion section of both the low-speed roller group and the high-speed roller group, the high-speed roller group forms a linear pulling force on the workpiece to be straightened based on the rotational speed of the high-speed roller group.

[0034] The transmission device has different transmission ratios for the low-speed roller group and the high-speed roller group, and the roller diameters of the low-speed roller group and the high-speed roller group are the same.

[0035] The transmission device is a gear meshing mechanism.

[0036] The plane containing the rollers in the low-speed roller group has an angle α with the plane containing the rollers in the high-speed roller group, where α = 90°.

[0037] Distance L < length of the workpiece to be processed.

[0038] Example 2, see appendix Figure 1 -5. Provides a straightening device based on differential roller sets, including a drive unit, a transmission unit, a low-speed roller set, a high-speed roller set, and a machine body;

[0039] The drive unit, transmission unit, low-speed roller set, and high-speed roller set are all mounted on the machine body;

[0040] The drive device drives the low-speed roller group and the high-speed roller group to rotate through the transmission device;

[0041] The low-speed roller set and the high-speed roller set have the same structure, both including two roller pairs. The two rollers are in the same plane and are symmetrically arranged about the straight line. The outer edges of the two rollers are tangent to each other. Under the drive of the drive device, the two roller pairs rotate in opposite directions. The outer edges of the two rollers are each provided with annular grooves. At the tangent position, the annular grooves of the two rollers form a pressing part.

[0042] The straight lines for straightening the low-speed roller group and the high-speed roller group are the same straight line, and there is a distance L between the low-speed roller group and the high-speed roller group on the straight line.

[0043] The low-speed roller group rotates at a slower speed than the high-speed roller group. For the workpiece to be straightened, the low-speed roller group is positioned before the high-speed roller group. When the workpiece to be straightened is simultaneously located in the extrusion section of both the low-speed roller group and the high-speed roller group, the high-speed roller group forms a linear pulling force on the workpiece to be straightened based on the rotational speed of the high-speed roller group.

[0044] The transmission device has the same transmission ratio for the low-speed roller group and the high-speed roller group, and the roller diameter of the high-speed roller group is larger than that of the low-speed roller group.

[0045] The transmission device is a gear meshing mechanism, a transmission pulley mechanism, or a worm gear mechanism.

[0046] The distance L is less than the length of the workpiece to be processed. The distance L is inversely proportional to the material density of the workpiece and directly proportional to the diameter of the workpiece. The value of the distance L ranges from 100mm to 200mm.

[0047] It also includes a guiding device, which is arranged along the straight line between the low-speed roller group and the high-speed roller group. This device provides support for the workpiece to be processed, allowing it to smoothly enter the extrusion section of the high-speed roller group.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A straightening device based on a differential roller assembly, characterized in that... It includes a drive unit, a transmission unit, a low-speed roller set, a high-speed roller set, and a machine body; The drive unit, transmission unit, low-speed roller set, and high-speed roller set are all mounted on the machine body; The drive device drives the low-speed roller group and the high-speed roller group to rotate through the transmission device; The low-speed roller set and the high-speed roller set have the same structure, both including two roller pairs. The two rollers are in the same plane and are symmetrically arranged about the straight line. The outer edges of the two rollers are tangent to each other. Under the drive of the drive device, the two roller pairs rotate in opposite directions. The outer edges of the two rollers are each provided with annular grooves. At the tangent position, the annular grooves of the two rollers form a pressing part. The straight lines for straightening the low-speed roller group and the high-speed roller group are the same straight line, and there is a distance L between the low-speed roller group and the high-speed roller group on the straight line. The low-speed roller group rotates at a slower speed than the high-speed roller group. For the workpiece to be straightened, the low-speed roller group is positioned before the high-speed roller group. When the workpiece to be straightened is simultaneously located in the extrusion section of both the low-speed roller group and the high-speed roller group, the high-speed roller group forms a linear pulling force on the workpiece to be straightened based on the rotation speed of the high-speed roller group. The plane containing the rollers in the low-speed roller group and the plane containing the rollers in the high-speed roller group have an angle α, where 0 < α ≤ 90°; The distance L is less than the length of the workpiece to be processed. The distance L is inversely proportional to the material density of the workpiece to be processed and directly proportional to the diameter of the workpiece to be processed.

2. The straightening device based on differential roller group according to claim 1, characterized in that... The transmission device has different transmission ratios for the low-speed roller group and the high-speed roller group, and the roller diameters of the low-speed roller group and the high-speed roller group are the same.

3. The straightening device based on differential roller group according to claim 1, characterized in that... The transmission device has the same transmission ratio for the low-speed roller group and the high-speed roller group, and the roller diameter of the high-speed roller group is larger than that of the low-speed roller group.

4. The straightening device based on differential roller group according to claim 1, characterized in that... The transmission device is a gear meshing mechanism, a transmission pulley mechanism, or a worm gear mechanism.

5. The straightening device based on differential roller group according to claim 1, characterized in that... The distance L ranges from 100mm to 200mm.

6. The straightening device based on differential roller group according to claim 1, characterized in that... It also includes a guiding device, which is arranged along the straight line between the low-speed roller group and the high-speed roller group.

7. The method of straightening using the straightening device as described in any one of claims 1-6, wherein the workpiece to be processed is first inserted into the extrusion section of the low-speed roller group along the straightening line, and the workpiece to be processed is guided into the extrusion section of the high-speed roller group under the drive of the rollers of the low-speed roller group, so that the workpiece to be processed is straightened under the rolling pressure of the two sets of rollers and the linear tension of the high-speed roller.

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