Harmonic drive type circular arc trimmer

Abstract

The utility model discloses a harmonic drive type arc trimmer. Including bottom plate, curvature coarse adjustment unit, curvature fine adjustment unit, high accuracy rotation unit, diamond pen, the curvature coarse adjustment unit includes coarse adjustment support, and the coarse adjustment support is set up on the bottom plate and can move to X axle direction, and the coarse adjustment support is C type structure, the high accuracy rotation unit includes rotation frame, rotation rigid drive unit, and the rotation rigid drive unit sets up on the coarse adjustment support, and the rotation frame is fixedly arranged in the inner chamber of coarse adjustment support, and the rotation frame is C type structure, and the outer diameter of rotation frame cooperates with the inner diameter of coarse adjustment support, and the rotation rigid drive unit is connected with rotation frame, the curvature fine adjustment unit includes fine adjustment drive unit, sliding mechanism, and the sliding mechanism sets up in rotation frame, and the diamond pen sets up on the sliding mechanism, and the fine adjustment drive unit is connected with sliding mechanism, the rotation rigid drive unit, fine adjustment drive unit all include servo motor, harmonic reducer, and the servo motor is connected with harmonic reducer. The utility model improves the stability of product quality, and guarantees the arc profile degree numerical stability that trims out.

Description

Technical fields:

[0001] This utility model belongs to the field of grinding technology, and specifically relates to a harmonic-driven circular arc dressing device. Background technology:

[0002] When grinding products requiring high curvature accuracy, the position of the diamond grinder needs to be repeatedly adjusted and measured manually to achieve a near-precise value. This method has large errors, is labor-intensive, and makes it difficult to obtain accurate curvature, resulting in poor product quality stability. Furthermore, during the diamond grinder's rotation, insufficient rigidity of the rotary mechanism leads to high rotational inertia, resulting in low rotational accuracy and unstable curvature values ​​for the finished arc contour.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility model content:

[0004] The purpose of this invention is to provide a harmonic-driven circular arc trimmer, thereby overcoming the defects in the prior art.

[0005] To achieve the above objectives, this utility model provides a harmonic-driven circular arc trimmer, comprising a base plate, a coarse curvature adjustment unit, a fine curvature adjustment unit, a high-precision rotation unit, and a diamond pen. The base plate is equipped with the coarse curvature adjustment unit, which in turn is mounted on the high-precision rotation unit. The fine curvature adjustment unit is mounted on the high-precision rotation unit, and the diamond pen is mounted on the fine curvature adjustment unit. The coarse curvature adjustment unit includes a coarse adjustment bracket, which is movably mounted on the base plate along the X-axis and has a C-shaped structure. The high-precision rotation unit includes a rotation frame and a rigid rotation drive unit, which is mounted on the coarse adjustment bracket. The frame is fixedly installed in the inner cavity of the coarse adjustment bracket. The rotary frame has a C-shaped structure, and its outer diameter matches the inner diameter of the coarse adjustment bracket. The rotary rigid drive unit is connected to the rotary frame and drives the rotary frame to rotate. The curvature fine adjustment unit includes a fine adjustment drive unit and a sliding mechanism. The sliding mechanism is installed in the rotary frame, and the diamond pen is installed on the sliding mechanism. The fine adjustment drive unit is connected to the sliding mechanism and drives the sliding mechanism to move along the X-axis within the rotary frame. Both the rotary rigid drive unit and the fine adjustment drive unit include a servo motor and a harmonic reducer. The servo motor is connected to the harmonic reducer and drives high-rigidity mechanical motion through the harmonic reducer.

[0006] Preferably, in the technical solution, the curvature coarse adjustment unit includes a coarse adjustment bracket and an adjustment plate. The adjustment plate is set on the base plate, and the coarse adjustment bracket is set on the adjustment plate. The adjustment plate is provided with an adjustment groove along the X-axis. The coarse adjustment bracket is fixed in the adjustment groove by screws. By adjusting the position of the coarse adjustment bracket in the adjustment groove, the curvature of the diamond pen is coarsely adjusted.

[0007] Preferably, in the technical solution, the high-precision rotary unit includes a rotary frame, a rotary servo motor, a rotary harmonic reducer, a coupling, and angular contact bearings. The coupling is mounted on a coarse adjustment bracket. The rotary servo motor is connected to the rotary harmonic reducer, which is connected to the coupling. Angular contact bearings are symmetrically arranged in the inner cavity of the coarse adjustment bracket. The top and bottom surfaces of the rotary frame are respectively fixed on the corresponding angular contact bearings. The output shaft of the rotary servo motor is connected to the top surface of the rotary frame through the coupling. The rotary servo motor, the rotary harmonic reducer, and the coupling form a rotary rigid drive unit. The rotary servo motor drives the rotary frame to rotate, and the rotary harmonic reducer drives the diamond pen to perform a high-rigidity rotary motion.

[0008] Preferably, in the technical solution, the curvature fine-tuning unit includes a curvature fine-tuning servo motor, a curvature fine-tuning harmonic reducer, a cross roller slide, a cross roller slide base, and a lead screw. The cross roller slide base is located inside the rotary frame. The curvature fine-tuning servo motor, the curvature fine-tuning harmonic reducer, and the cross roller slide are mounted on the cross roller slide base. The curvature fine-tuning servo motor is connected to the curvature fine-tuning harmonic reducer, which is connected to the lead screw. The cross roller slide is mounted on the lead screw, and a diamond pen is mounted at the front end of the cross roller slide. The curvature fine-tuning servo motor and the curvature fine-tuning harmonic reducer form a fine-tuning drive unit, and the cross roller slide and the lead screw form a sliding mechanism. The curvature fine-tuning servo motor drives the cross roller slide to move along the X-axis within the cross roller slide base, and the curvature fine-tuning harmonic reducer drives the diamond pen to perform high-rigidity translational motion.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The coarse curvature adjustment unit moves the diamond pen to its approximate position, and then the fine curvature adjustment servo motor drives the diamond pen to the target curvature position. This method offers fast adjustment speed, high precision, and easy operation, greatly improving the stability of product quality. The high-precision rotary unit significantly reduces rotational inertia, maintains high rotational rigidity, improves the diamond pen's rotational accuracy, and ensures the stability of the trimmed arc contour values. Attached image description:

[0011] Figure 1 This is a schematic diagram of the structure of the harmonic-driven circular arc trimmer of this utility model;

[0012] Figure 2This is the main view of the harmonic-driven circular arc trimmer of this utility model;

[0013] Figure 3 This is a left view of the harmonic-driven circular arc trimmer of this utility model;

[0014] Figure 4 This is a top view of the harmonic-driven circular arc trimmer of this utility model. Detailed implementation method:

[0015] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0016] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0017] like Figure 1-4 As shown, a harmonic-driven circular arc trimmer includes a base plate 1, a coarse curvature adjustment unit 2, a fine curvature adjustment unit 3, a high-precision rotary unit 4, and a diamond pen 5. The base plate 1 is provided with the coarse curvature adjustment unit 2, the high-precision rotary unit 4 is provided with the coarse curvature adjustment unit 2, the fine curvature adjustment unit 3 is provided with the high-precision rotary unit 4, and the diamond pen 5 is provided with the fine curvature adjustment unit 3.

[0018] The curvature coarse adjustment unit 2 includes a coarse adjustment bracket 20 and an adjustment plate 21. The adjustment plate 21 is set on the base plate 1, and the coarse adjustment bracket 20 is set on the adjustment plate 21. The adjustment plate 21 is provided with an adjustment groove 22 along the X-axis. The coarse adjustment bracket 20 is fixed in the adjustment groove 22 by screws. By adjusting the position of the coarse adjustment bracket 20 in the adjustment groove 22, the curvature of the diamond pen 5 is coarsely adjusted. The coarse adjustment bracket 20 has a C-shaped structure.

[0019] The high-precision rotary unit 4 includes a rotary frame 40, a rotary servo motor 41, a rotary harmonic reducer 42, a coupling 43, and an angular contact bearing 44. The rotary frame 40 is fixedly installed in the inner cavity of the coarse adjustment bracket 20. The rotary frame 40 has a C-shaped structure, and its outer diameter matches the inner diameter of the coarse adjustment bracket 20. The coupling 43 is installed on the coarse adjustment bracket 20. The rotary servo motor 41 is connected to the rotary harmonic reducer 42, and the rotary harmonic reducer 42 is connected to the coupling 43. Angular contact bearings 44 are symmetrically arranged in the inner cavity of the frame 20. The top and bottom surfaces of the rotary frame 40 are respectively fixed on the corresponding angular contact bearings 44. The output shaft of the rotary servo motor 41 is connected to the top surface of the rotary frame 40 through a coupling 43. The rotary servo motor 41, the rotary harmonic reducer 42, and the coupling 43 form a rotary rigid drive unit. The rotary servo motor 41 drives the rotary frame 40 to rotate, and the rotary harmonic reducer 42 drives the diamond pen 5 to perform a high-rigidity rotary motion.

[0020] The curvature fine-tuning unit 3 includes a curvature fine-tuning servo motor 30, a curvature fine-tuning harmonic reducer 31, a cross roller slide 32, a cross roller slide base 33, and a lead screw. The cross roller slide base 33 is disposed within the rotary frame 40. The curvature fine-tuning servo motor 30, the curvature fine-tuning harmonic reducer 31, and the cross roller slide 32 are mounted on the cross roller slide base 33. The curvature fine-tuning servo motor 30 is connected to the curvature fine-tuning harmonic reducer 31. 1. Connected to a lead screw, the lead screw is equipped with a cross roller slide 32, and a diamond pen 5 is provided at the front end of the cross roller slide 32; the curvature fine-tuning servo motor 30 and the curvature fine-tuning harmonic reducer 31 form a fine-tuning drive unit, and the cross roller slide 32 and the lead screw form a sliding mechanism; the curvature fine-tuning servo motor 30 drives the cross roller slide 32 to move along the X-axis in the cross roller slide base 33, and the curvature fine-tuning harmonic reducer 31 drives the diamond pen 5 to perform high-rigidity translational motion.

[0021] During operation, the coarse curvature adjustment unit 2 moves the diamond pen 5 to its approximate position, and then the fine curvature adjustment servo motor 30 drives the diamond pen 5 to the target curvature position. This fast adjustment speed, high precision, and easy operation greatly improve the stability of product quality. The rotary servo motor 41 is started, and the rotary harmonic reducer 42 drives the diamond pen 5 to process the product. The high-precision rotary unit greatly reduces the rotational inertia, and half of the teeth of the rotary harmonic reducer 42 are always engaged, allowing the diamond pen 5 to remain fixed in place, maintaining high rotational rigidity, improving the rotational accuracy of the diamond pen, and shaping a stable arc contour.

[0022] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A harmonic-driven circular arc trimmer, characterized in that: The system includes a base plate, a coarse curvature adjustment unit, a fine curvature adjustment unit, a high-precision rotation unit, and a diamond pen. The base plate has the coarse curvature adjustment unit, which in turn has the high-precision rotation unit mounted on it. The fine curvature adjustment unit is mounted on the high-precision rotation unit, and the diamond pen is mounted on the fine curvature adjustment unit. The coarse curvature adjustment unit includes a coarse adjustment bracket, which is movably mounted on the base plate along the X-axis and has a C-shaped structure. The high-precision rotation unit includes a rotation frame and a rigid rotation drive unit. The rigid rotation drive unit is mounted on the coarse adjustment bracket, and the rotation frame is fixedly mounted within the inner cavity of the coarse adjustment bracket. The rotating frame has a C-shaped structure, with its outer diameter matching the inner diameter of the coarse adjustment bracket. A rigid rotation drive unit is connected to the rotating frame, driving its rotation. The curvature fine adjustment unit includes a fine adjustment drive unit and a sliding mechanism. The sliding mechanism is housed within the rotating frame, and a diamond pen is mounted on it. The fine adjustment drive unit is connected to the sliding mechanism, driving it to move along the X-axis within the rotating frame. Both the rigid rotation drive unit and the fine adjustment drive unit include a servo motor and a harmonic reducer. The servo motor is connected to the harmonic reducer, driving high-rigidity mechanical motion.

2. The harmonic-driven circular arc trimmer according to claim 1, characterized in that: The curvature coarse adjustment unit includes a coarse adjustment bracket and an adjustment plate. The adjustment plate is set on the base plate, and the coarse adjustment bracket is set on the adjustment plate. The adjustment plate is provided with an adjustment groove along the X-axis, and the coarse adjustment bracket is fixed in the adjustment groove by screws.

3. The harmonic-driven circular arc trimmer according to claim 2, characterized in that: The high-precision rotary unit includes a rotary frame, a rotary servo motor, a rotary harmonic reducer, a coupling, and angular contact bearings. The coupling is mounted on a coarse adjustment bracket. The rotary servo motor is connected to the rotary harmonic reducer, which is in turn connected to the coupling. Angular contact bearings are symmetrically arranged in the inner cavity of the coarse adjustment bracket. The top and bottom surfaces of the rotary frame are fixed to the corresponding angular contact bearings. The output shaft of the rotary servo motor is connected to the top surface of the rotary frame via the coupling. The rotary servo motor, rotary harmonic reducer, and coupling form a rotary rigid drive unit.

4. The harmonic-driven circular arc trimmer according to claim 3, characterized in that: The curvature fine-tuning unit includes a curvature fine-tuning servo motor, a curvature fine-tuning harmonic reducer, a cross roller slide, a cross roller slide base, and a lead screw. The cross roller slide base is located inside the rotary frame. The curvature fine-tuning servo motor, the curvature fine-tuning harmonic reducer, and the cross roller slide are mounted on the cross roller slide base. The curvature fine-tuning servo motor is connected to the curvature fine-tuning harmonic reducer, which is connected to the lead screw. The cross roller slide is mounted on the lead screw, and a diamond pen is mounted at the front end of the cross roller slide. The curvature fine-tuning servo motor and the curvature fine-tuning harmonic reducer form a fine-tuning drive unit, and the cross roller slide and the lead screw form a sliding mechanism.

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