Shell processing datum positioning method, margin cutting method and through hole processing method

Abstract

The invention discloses a shell body machining method. A driving device drives a scanning device to scan the shell body, a machining datum plane of the shell body is fitted out and the placing postureand the cutting track of the shell body on the machining datum plane is determined through a spatial coordinate of a distance mutation point / edge mutation point on at least two intersecting scanningpaths, and under the control of a manipulator, a cutting tool cuts residual edges along a cutting path; and then a blind hole of the shell body is scanned by driving the scanning device through the driving device, a machining datum plane of the blind hole and a center of the blind hole is fitted out through a spatial coordinate of at least three blind hole distance variation points on at least twointersecting scanning paths, and the blind hole is opened and a through hole step surface is grinded through the manipulator according to a datum plane of machining datum plane of the blind hole andthe center of the blind hole. The scheme can quickly determine the machining base plane of the shell body and improve the efficiency and accuracy of the residual edge cutting and through-hole machining of the shell.

Description

technical field [0001] The invention relates to the field of mechanical processing of shells, in particular to a shell processing datum positioning method, a margin cutting method and a through hole processing method. Background technique [0002] Existing shells such as bathtubs and yachts are made of composite materials, which are composed of a surface layer (plastic layer) and an inner layer (glass fiber resin reinforcement layer). During the molding process, due to the mold and The processing technology causes a certain error in the size of the shell, which will affect the subsequent processing of the shell. In the manufacturing industry, the size of the part directly affects the quality of the final product, so it is necessary to establish a measurement before using the robot to further process the shell. Benchmarks for dimensional measurements. The existing technology is to use the workbench as the positioning surface of the shell processing. After the workbench is in...

AI Technical Summary

Problems solved by technology

The existing technology is to use the workbench as the positioning surface of the shell processing. After the workbench is installed, due to the assembly error and the original size error of the shell, it will have a certain impact on the subsequent processing of the shell, which cannot be guaranteed. Shell processing quality

The shells are all formed by die-casting or blistering. In the process of mold closing or demoulding, there are often margins left around the shells. The existing technology uses manual grinding to cut the shells. The remaining edge of the periphery is low in processing efficiency and requires high proficiency for workers; in addition, several holes need to be processed on the shell as installation holes to facilitate the installation of lamps, drain valves and other components. Due to the composite material The shell is light in weight and flexible. During the process of processing, the shell is easy to shake, which will cause certain errors in the processed holes and affect the assembly of subsequent parts.

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