Ball head grinding wheel grinding and polishing track design method based on trial cutting method
A trajectory design and grinding wheel grinding technology, applied in grinding/polishing equipment, machine tools designed for grinding the rotating surface of workpieces, grinding machines, etc., can solve the problems of inaccurate processing trajectory of ball-end grinding wheels, and reduce and eliminate errors. , the effect of improving shape accuracy
Active Publication Date: 2022-01-14
HARBIN INST OF TECH
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Problems solved by technology
[0004] In view of the above-mentioned problem of inaccurate processing track of the ball-end grinding wheel in the grinding and polishing process of the small-sized rotary parts composed of cylinders and spheres or spherical shells, the purpose of the present invention is to provide a ball-end grinding wheel based on the trial cutting method Grinding and polishing trajectory design method
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[0079] In a further embodiment of the present invention, the specific operation method:
[0080] Step 1: Clamp the ball-end grinding wheel 4 onto the grinding wheel spindle, observe the position of the center of the ball-end grinding wheel through the CCD camera and the magnifying lens, and adjust the position of the center of the ball-end grinding wheel 4 by linear motion along the U-axis so that it is at The rotation center line of the C-axis turntable 1;
[0081] Step 2: Use a micrometer to measure the size of the revolving part 5, and draw the cross-sectional contour line of the revolving part 5 passing through the axis of rotation in the CAD software. Since the part 5 is a revolving body, the part 5 will rotate along its own axis during processing, so you only need to Reserve the contour line on one side of the rotary axis for trajectory design;
[0082] Step 3: In CAD, offset the contour line of part 5 to the outside of the entity by Rs+a, where a is the reserved value ...
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The invention discloses a ball head grinding wheel grinding and polishing track design method based on a trial cutting method, relates to the technical field of grinding and polishing track design, and solves the problem that the machining track of a ball head grinding wheel is inaccurate in the grinding and polishing machining process of a small rotary body part composed of a cylinder and a ball body or a spherical shell. According to the method, the ball center positions of the ball grinding wheel when the surfaces of all the feature structures of a part make contact with the ball grinding wheel are determined through the trial cutting method, the ball grinding wheel grinding and polishing track is obtained by connecting all the ball center positions, a high-precision machining track curve in the ball grinding wheel machining process can be obtained, by taking surface contact as a judgment condition for the grinding wheel to reach a proper position, the ball center coordinate position of the grinding wheel can be accurately obtained by the trial cutting method, errors generated when a micrometer measures the size of a part are eliminated, the shape precision of the part can be improved, machining programming is conducted through the ball head grinding wheel ball center machining track, the specific size of the grinding wheel does not need to be accurately measured, and errors in the ultra-precision machining process are reduced.
Description
technical field [0001] The invention relates to the technical field of grinding and polishing trajectory design, in particular to a method for designing a grinding and polishing trajectory of a ball-end grinding wheel based on a trial cutting method. Background technique [0002] With the rapid development of science and technology, curved surface parts with complex structure, miniaturization and high processing requirements play an increasingly important role in key devices in aerospace, military defense, optical components, microelectronics and other fields. Most of the parts are made of hard and brittle materials that are difficult to process. In addition to achieving low surface roughness and high surface accuracy, they also have smaller sizes and more complex structures. Ultra-precision grinding and polishing is currently an ideal processing method for obtaining high-quality curved surface parts. [0003] For small rotary parts composed of cylinders and spheres (or sph...
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Login to View More IPC IPC(8): B24B5/36B24B41/04B24B27/02B24B41/02B24B41/06B24B49/12
CPCB24B5/363B24B41/04B24B27/02B24B41/02B24B41/067B24B49/12
Inventor 刘赫男田金川陈明君程健吴春亚孙雅洲
Owner HARBIN INST OF TECH