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Method for reducing flatness error of double-sided grinding workpiece

A double-sided grinding and flatness technology is applied to machine tools suitable for grinding workpiece planes, comprehensive factory control, and surface polishing machine tools. It can solve problems such as difficult to ensure high-precision machining, and achieve the reduction of flatness errors. The effect of high-precision machining

Active Publication Date: 2021-05-28
DALIAN UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

The current double-sided grinding process is difficult to guarantee the goal of high-precision machining

Method used

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  • Method for reducing flatness error of double-sided grinding workpiece
  • Method for reducing flatness error of double-sided grinding workpiece
  • Method for reducing flatness error of double-sided grinding workpiece

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Embodiment Construction

[0024] In order to solve the above problems, the inventor of this case conducted careful design and research, and concluded that the relative speed during the surface grinding process of the workpiece has an impact on the upper and lower shapes.

[0025] Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited thereto.

[0026] A method for reducing the flatness error of a double-sided grinding workpiece. Figure 1 is a schematic diagram of the calculation of the double-sided grinding trajectory. When the present invention studies the influence of speed on the upper and lower shapes, the two-sidedness of the workpiece is obtained by calculating the rotational speed of the upper and lower grinding discs and the rotational speed of the workpiece. One surface has a concave surface shape, and the other surface has a convex surface shape. By comparing the relative speed, it is found that the relative speed ...

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Abstract

The invention discloses a method for reducing the flatness error of a double-sided grinding workpiece, and belongs to the field of mechanical grinding and polishing machining. In the machining process of a double-sided grinding machine, a workpiece still rotates in a wandering star wheel; and in order to ensure the movement uniformity of the workpiece surface in the double-sided grinding process, a certain distance exists between the center of the wandering star wheel and the center of the workpiece. The method is used for calculating planetary motion with eccentricity and autorotation, and comprises the following steps: firstly, calculating the material removal difference of an upper disc and a lower disc by measuring the rotating speed in the machining process; secondly, obtaining turn-over time by calculating surface shape changes of the upper surface and the lower surface; and finally, realizing the convergence of the double-sided flatness by turning over for multiple times. According to the method, the planeness of the upper surface and the lower surface of the workpiece can be greatly reduced on the basis of double-face grinding, and high-precision machining can be achieved on a grinding disc with poor precision.

Description

technical field [0001] The invention belongs to the technical field of mechanical grinding and polishing, and relates to a method for reducing the flatness error of a double-sided grinding workpiece. Background technique [0002] Double-sided grinding is one of the most effective methods for global planarization. Double-sided grinding is a new grinding technology based on single-sided grinding technology to avoid the cumbersome process of secondary clamping and improve the parallelism accuracy of the processed workpiece. During the processing, the material on both sides of the workpiece can be removed at the same time through the relative movement between the workpiece and the upper and lower grinding discs, which improves the material removal efficiency. However, when the workpiece is processed by this method, the flatness of the workpiece depends on the precision of the grinding disc, and it is difficult to meet the flatness requirement of the workpiece when processing wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B7/17B24B29/02
CPCB24B7/17B24B29/02Y02P90/02
Inventor 郭江康仁科潘博王康乐
Owner DALIAN UNIV OF TECH
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