Method for reducing laser cutting damage of swing sheet

Abstract

The invention provides a method for reducing laser cutting damage of a swing sheet. The cutting damage of the swing sheet during laser machining is reduced by the steps of manufacture of a cutting auxiliary device, mounting, heating, laser cutting and the like. The unique cutting auxiliary device is used for precise positioning, laser cutting is performed when the swing sheet is heated, high positioning precision can be realized, the laser cutting damage can be reduced, and product quality is improved. The cutting auxiliary device supports the swing sheet by the aid of an inner support ring, an outer support ring and a central support table, so that the swing sheet is stably supported during machining, and mounting reliability and position conformity of cutting graphics with the design structure of the swing sheet are improved. The cutting auxiliary device and the swing sheet mounted on the cutting auxiliary device are simultaneously heated during machining, the swing sheet is cut at a high temperature, energy of used laser beams is reduced, the temperature gradient of a cutting joint is reduced, and residual stress is decreased.

Description

technical field [0001] The invention relates to a laser cutting method for a pendulum plate, in particular to a method for reducing laser cutting damage, and belongs to the technical field of laser cutting production of an accelerometer pendulum plate. Background technique [0002] The pendulum plate is an important part of the accelerometer, and its structure and processing quality directly affect the performance of the accelerometer. The structure of the accelerometer pendulum is complex, and its production process belongs to the category of precision body processing. Because it is usually made of quartz glass, it is a hard and brittle material, and the machining effect is poor. Therefore, in addition to grinding, polishing, cutting, cleaning and other glass industries. In addition to the process method, precision machining methods such as laser cutting are also used to realize the precise structural form of the pendulum plate. [0003] In the prior art, the device used i...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the device used in the laser cutting process of the swing plate has simple positioning and alignment functions, the support structure is unstable, and the cutting accuracy is low

In addition, since laser cutting is local thermal processing, the temperature gradient during cutting will cause stress concentration at the slit, and the large residual stress will easily cause cracks and other damage to the processed workpiece, resulting in failure of hard and brittle structural parts

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