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A method for grinding wheel with arbitrary curved surface for precision grinding of curved surface

A technology for precision grinding and surface contouring, which is used in grinding/polishing equipment, grinding machines, special data processing applications, etc. It can solve the problems of fast tool wear and low processing efficiency, improve shape accuracy and reduce grinding wheel wear rate. , to avoid the effect of single-point contact processing of the tool

Active Publication Date: 2017-04-19
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0002] At present, the grinding of free-form surfaces is mainly processed by single-point diamond or multi-axis grinding wheels. When these two methods are used for grinding, not only the processing efficiency is low, but also the tool wears quickly.
In addition, a tool path planning method for arc torus grinding wheel surface grinding has been proposed, but this method is limited to the grinding wheel of arc torus

Method used

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  • A method for grinding wheel with arbitrary curved surface for precision grinding of curved surface
  • A method for grinding wheel with arbitrary curved surface for precision grinding of curved surface
  • A method for grinding wheel with arbitrary curved surface for precision grinding of curved surface

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Embodiment Construction

[0042] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention is not limited to the scope shown in the examples.

[0043] A kind of method that arbitrary curved surface grinding wheel is used for the precision grinding of curved surface, comprises steps:

[0044] Step 1, dressing the grinding wheel, trimming the grinding wheel with the corresponding contour surface on the grindstone 4 according to the pre-designed contour surface of the grinding wheel;

[0045] Step 2, grinding wheel profile compensation, obtain the actual curved surface profile of the grinding wheel by detecting the actual profile detection points of the grinding wheel;

[0046] Step 3. Plan the tool trajectory. According to the principle that the actual contour surface of the grinding wheel and the free-form surface of the workpiece are collinear at...

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Abstract

The invention discloses a precise curved-surface grinding method for a grinding wheel with any curved surface. The precise curved-surface grinding method comprises the steps of 1 trimming the grinding wheel, namely trimming the grinding wheel with a corresponding contour curved surface on a grinding stone according to a pre-designed contour curved surface of the grinding wheel, 2 compensating a grinding wheel contour, namely obtaining an actual curved-surface contour of the grinding wheel by detecting an actual contour detection point of the grinding wheel, 3 planning a cutter track, namely gradually looking for a point of contact to obtain cutter track points according to the principle that a normal vector of the actual contour curved surface of the grinding wheel and a normal vector of the free curved surface of a machined workpiece are collinear at the position of the point of contact and then planning the cutter track for curved-surface grinding through a cutter track point cloud, and 4 adopting an axial grinding mode to grind the workpiece according to the cutter track. Compared with the prior art, single-point contact machining of the cutter can be avoided, the abrasion rate of the grinding wheel can be reduced, the shape accuracy of curved-surface machining is greatly improved through contour compensation, and a curved-surface shape error can be reduced by about 50%.

Description

technical field [0001] The invention relates to the technical field of precision grinding of free-form surfaces, in particular to a tool trajectory algorithm for diamond grinding wheels with arbitrary curved surface contours, and a compensation method for improving the grinding accuracy of curved surfaces. CNC precision grinding technology for curved surfaces of materials. Background technique [0002] At present, the grinding of free-form surfaces is mainly processed by single-point diamond or multi-axis grinding wheels. When these two methods are used for grinding, not only the processing efficiency is low, but also the tool wears quickly. In addition, a tool path planning method for arc torus grinding wheel surface grinding has been proposed, but this method is limited to the grinding wheel of arc torus. Contents of the invention [0003] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a curved surface grinding met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B19/00G06F17/50
CPCB24B19/009G06F30/17
Inventor 谢晋孙晋祥黎宇弘李青
Owner SOUTH CHINA UNIV OF TECH
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