A Method of Reducing the Planarity Error of Double-side 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: 2022-05-20
DALIAN UNIV OF TECH
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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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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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A method for reducing the flatness error of a double-sided grinding workpiece belongs to the field of mechanical grinding and polishing processing. During the processing of a double-sided grinding machine, the workpiece still rotates in the planetary wheel; and in order to ensure the double-sided grinding process The movement uniformity of the workpiece surface, there is a certain distance between the center of the planetary wheel and the center of the workpiece. The present invention calculates the planetary motion with eccentricity and rotation. Firstly, by measuring the rotational speed in the processing process, the material removal difference between the upper and lower plates is calculated; secondly, by calculating the change of the surface shape of the upper and lower plates, the turning time is obtained; finally, after Turn over multiple times to achieve the convergence of double-sided flatness. The invention can greatly reduce the flatness of the upper and lower surfaces of the workpiece on the basis of double-sided grinding, and can realize high-precision machining 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...
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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