Diamond grinding wheel for machining rotor of cycloid motor

Abstract

The utility model belongs to the technical field of diamond grinding wheels, and particularly relates to a diamond grinding wheel for machining a cycloid motor rotor. The grinding wheel comprises a grinding layer. The grinding layer comprises a middle convex arc section, a first concave arc section and a second concave arc section; the first concave arc section and the second concave arc section are symmetrically arranged on the two sides of the middle convex arc section and are in smooth connection with the middle convex arc section. The cycloid motor stator is ground through rotation of the grinding face of the grinding wheel and axial feeding of the rotor workpiece, and due to the fact that the grinding face is completely matched with the structure of the tooth-shaped cycloid of the rotor, the machining efficiency and the structural precision of the rotor can be improved.

Description

Technical Field

[0001] This application belongs to the field of diamond grinding wheel technology, specifically relating to a diamond grinding wheel for machining cycloidal motor rotors. Background Technology

[0002] The toothed cycloidal serrations on the rotor assembly (including the stator and rotor) of a cycloidal motor require high geometric accuracy and surface finish. Figure 1 The diagram shows the cross-sectional shape of a commonly used stator to ensure meshing sealing and smooth movement between the rotor and stator. Diamond grinding wheels are considered suitable grinding tools for machining rotor pairs due to their high grinding efficiency and ability to maintain a stable cutting edge shape.

[0003] Diamond grinding wheels generally consist of a diamond abrasive layer, a transition layer, and a matrix. The working layer, composed of abrasive, binder, and filler, is the working part of the grinding wheel; the transition layer, composed of binder, metal powder, and filler, is the part that firmly fixes the diamond layer to the matrix; the matrix supports the abrasive layer and is securely clamped to the spindle of the equipment using a flange during use. [This paragraph is from Baidu Encyclopedia: Diamond Grinding Wheel]

[0004] Existing diamond grinding wheels, due to their structure and dimensions, cannot be completely matched with the cycloidal tooth profile of hydraulic motors. Although they can be used to process cycloidal stators, they have limitations in processing efficiency and forming precision. Utility Model Content

[0005] In view of this, this application provides a diamond grinding wheel for machining cycloidal motor rotors to solve all or part of the technical problems described in the background section of this application.

[0006] The innovative concept of this application is to set the grinding surface of the diamond grinding wheel to perfectly match the cycloidal tooth profile of the stator, thereby improving the machining efficiency and structural precision of the cycloidal motor stator.

[0007] The solution provided in this application to resolve its technical problem is as follows:

[0008] A diamond grinding wheel for machining cycloidal motor rotors includes a grinding layer; the grinding layer includes a central convex arc segment, a first concave arc segment, and a second concave arc segment; the first concave arc segment and the second concave arc segment are symmetrically arranged on both sides of the central convex arc segment and are smoothly connected to the central convex arc segment.

[0009] Furthermore, the first concave arc segment and the second concave arc segment have the same structure and curvature.

[0010] Preferably, the grinding layer further includes a left convex arc segment and a right convex arc segment; the left convex arc segment and the right convex arc segment are symmetrically arranged on both sides of the middle convex arc segment; the left convex arc segment and the right convex arc segment are smoothly connected to the first concave arc segment and the second concave arc segment, respectively.

[0011] Furthermore, the left convex arc segment and the right convex arc segment have the same curvature.

[0012] Preferably, the grinding layer further includes a third concave arc segment and a fourth concave arc segment; the third concave arc segment and the fourth concave arc segment are symmetrically arranged on both sides of the middle convex arc segment; the third concave arc segment and the fourth concave arc segment are smoothly connected to the left convex arc segment and the right convex arc segment, respectively.

[0013] Furthermore, the third and fourth concave arc segments have the same curvature.

[0014] Preferably, the diamond grinding wheel used for machining the rotor of a cycloidal motor also includes a base; the base is provided with mounting holes.

[0015] Beneficial technical effects:

[0016] The diamond grinding wheel disclosed in this application for machining cycloidal motor rotors grinds the stator of the cycloidal motor by rotating the grinding surface of the grinding wheel and feeding the rotor workpiece axially. Since the grinding surface is perfectly matched with the structure of the rotor tooth cycloid, it helps to improve the machining efficiency and structural precision of the rotor.

[0017] The technical solution and technical effects of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 : A schematic diagram of the cross-section of the rotor of a cycloidal motor;

[0019] Figure 2 Schematic diagram of the structure of a diamond grinding wheel specifically designed for cycloidal motor rotors;

[0020] Figure 3 : Axial schematic diagram of the grinding process;

[0021] Figure 4 : Side view of the grinding process.

[0022] Icon description:

[0023] 1- The middle convex arc segment;

[0024] 2-First concave arc segment;

[0025] 3-Second concave arc segment;

[0026] 4-Left convex arc segment;

[0027] 5-Right convex arc segment;

[0028] 6-The third concave arc segment;

[0029] 7-Fourth concave arc segment;

[0030] 8-Matrix;

[0031] 9-Assembly hole. Detailed Implementation

[0032] Please see Figures 1 to 4 The diamond grinding wheel disclosed in this application for machining cycloidal motor rotors includes a base 8 and a grinding layer with a gyratory structure; the grinding layer is sintered and fixed on the base 8. The base 8 is made of metal, and the grinding layer is made of diamond grinding material. The base 8 is provided with mounting holes 9 for mounting the grinding wheel onto a grinding tool.

[0033] The grinding layer includes a central convex arc segment 1, which is used to machine a cycloidal groove on the stator.

[0034] On the left side of the middle convex arc segment 1 (according to the left and right direction of the paper), there are a first concave arc segment 2, a left convex arc segment 4, and a third concave arc segment 6 in sequence; the first concave arc segment 2 is smoothly connected to the middle convex arc segment 1; the left convex arc segment 4 is smoothly connected to the first concave arc segment 2; and the third concave arc segment 6 is smoothly connected to the left convex arc segment 4.

[0035] On the right side of the middle convex arc segment 1 (in the left-right direction of the paper), there are a second concave arc segment 3, a right convex arc segment 5, and a fourth concave arc segment 7 in sequence; the second concave arc segment 3 is smoothly connected to the middle convex arc segment 1; the right convex arc segment 5 is smoothly connected to the second concave arc segment 3; and the fourth concave arc segment 7 is smoothly connected to the right convex arc segment 5.

[0036] The first concave arc segment 2 and the second concave arc segment 3 have the same structure and curvature; the middle convex arc segment 1, the left convex arc segment 4, and the right convex arc segment 5 have the same structure and curvature.

[0037] The third concave arc segment 6 and the fourth concave arc segment 7 have the same structure and curvature; and the third concave arc segment 6 and the fourth concave arc segment 7 are respectively half the structure of the first concave arc segment 2 and the second concave arc segment 3.

[0038] The middle convex arc segment 1, the left convex arc segment 4, and the right convex arc segment 5 are used to process three adjacent cycloidal slots on the cycloidal rotor, respectively; the first concave arc segment 2 and the second concave arc segment 3 are used to process two cycloidal teeth between the three cycloidal slots, respectively; the third concave arc segment 6 and the fourth concave arc segment 7 are used to process half of the structure of the two cycloidal teeth, respectively.

[0039] Principle and effect explanation: The axes of the diamond grinding wheel and the rotor workpiece are perpendicular to each other;

[0040] The diamond grinding wheel moves downwards to the grinding station and begins to rotate;

[0041] The rotor blank is fed forward in a direction perpendicular to the grinding wheel axis to complete the machining of one side of the rotor;

[0042] The diamond grinding wheel moves upward away from the grinding station and stops rotating;

[0043] The rotor blank is returned to its original position and rotated 180 degrees in a direction perpendicular to the grinding wheel shaft;

[0044] The diamond grinding wheel moves downwards to the grinding station and begins to rotate;

[0045] The rotor blank is fed forward in a direction perpendicular to the grinding wheel axis to complete the machining of the other side of the rotor;

[0046] Alternatively, the machining of the toothed cycloids on both sides of the rotor can be completed by adjusting the orientation of the rotor blank and the direction of the grinding wheel in conjunction with the two strokes of the rotor forward and return.

[0047] The technical solutions and effects of this application have been described in detail above with reference to the accompanying drawings and specific embodiments. It should be noted that those skilled in the art can develop other embodiments based on this. Any simple modifications and equivalent substitutions that do not depart from the innovative concept of this application are covered by this application and fall within the protection scope of this patent.

Claims

1. A diamond grinding wheel for machining cycloidal motor rotors, comprising a grinding layer; characterized in that: The grinding layer includes a central convex arc segment (1), a first concave arc segment (2), and a second concave arc segment (3). The first concave arc segment (2) and the second concave arc segment (3) are symmetrically arranged on both sides of the middle convex arc segment (1) and are smoothly connected to the middle convex arc segment (1).

2. The diamond grinding wheel for machining cycloidal motor rotors according to claim 1, characterized in that: The first concave arc segment (2) and the second concave arc segment (3) have the same curvature.

3. The diamond grinding wheel for machining cycloidal motor rotors according to claim 1, characterized in that: The grinding layer also includes a left convex arc segment (4) and a right convex arc segment (5). The left convex arc segment (4) and the right convex arc segment (5) are symmetrically arranged on both sides of the middle convex arc segment (1); The left convex arc segment (4) and the right convex arc segment (5) are smoothly connected to the first concave arc segment (2) and the second concave arc segment (3), respectively.

4. The diamond grinding wheel for machining cycloidal motor rotors according to claim 3, characterized in that: The left convex arc segment (4) and the right convex arc segment (5) have the same curvature.

5. The diamond grinding wheel for machining cycloidal motor rotors according to claim 3, characterized in that: The grinding layer also includes a third concave arc segment (6) and a fourth concave arc segment (7). The third concave arc segment (6) and the fourth concave arc segment (7) are symmetrically arranged on both sides of the middle convex arc segment (1); The third concave arc segment (6) and the fourth concave arc segment (7) are smoothly connected to the left convex arc segment (4) and the right convex arc segment (5), respectively.

6. The diamond grinding wheel for machining cycloidal motor rotors according to claim 5, characterized in that: The third concave arc segment (6) and the fourth concave arc segment (7) have the same curvature.

7. The diamond grinding wheel for machining cycloidal motor rotors according to any one of claims 1-6, characterized in that: The diamond grinding wheel used for machining the rotor of the cycloidal motor also includes a base (8); the base (8) is provided with mounting holes (9).

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