System for measuring surface topography of aerospace thin-wall disc part and machining fixture based on digital signal processor (DSP)

Abstract

The invention relates to a system for measuring the surface topography of an aerospace thin-wall disc part and machining a fixture based on a digital signal processor (DSP). The system consists of a TMS320C6747 chip, and a DSP development board, a DSP development board 5V power supply, a quick servo tool rest, a piezoelectric ceramic displacement driver, a piezoelectric ceramic power amplifier, a capacitive sensor measuring head, a capacitive sensor signal amplifier, a capacitive sensor power supply, an absolute encoder, a linear grating ruler, a laser displacement sensor measuring head, a laser displacement sensor measuring head retainer, a laser displacement sensor controller, a laser displacement sensor power supply, an absolute encoder bracket, an elastic coupling, a monocrystalline diamond turning tool, a thin-wall workpiece, a fixture mounting platform and an experiment platform which are based on the chip. The system has the functions of quickly measuring the surface topography and manufacturing the fixture at high accuracy, has practical value in the field of machining, and can solve the problems that the deformation of the thin-wall part is large, new deformation is generated in each machining process, accuracy is difficult to ensure, and the fixture cannot meet the clamping requirement in each process.

Description

(1) Technical field [0001] The invention relates to a DSP-based aviation thin-walled disk-like component surface topography measurement and fixture processing system. It is a DSP-based surface topography measurement and processing system. As a signal acquisition and processing center, DSP measures the surface topography of processed and deformed thin-walled disk parts through sensors, and after DSP data processing, the processed measurement data is generated by piezoelectric ceramics to produce displacement output to process precision fixtures. It has been achieved to eliminate the influence of the processed deformation error on the next processing accuracy. It belongs to the technical field of precision cutting manufacturing. (2) Background technology [0002] With the development of science and technology and industrial production, higher requirements are put forward for the machining accuracy and surface quality of mechanical parts. High output, high quality, low consu...

AI Technical Summary

Problems solved by technology

However, few people have been involved in the manufacture of fixtures for processed deformed parts.

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