Flexible member assembling dimensional deviation control method based on multi-station assembly jig compensation

Abstract

The invention provides a flexible member assembling dimensional deviation control method based on multi-station assembly jig compensation. The flexible member assembling dimensional deviation control method is characterized in that based on a state space method for controlling the theory, a jig compensation system is added in a positioning or re-positioning link for each station, wherein the system comprises three modules: a deviation data acquisition module, a compensation scheme decision module and a compensation implementation module; the deviation data acquisition module provides input for a system; except the first station, other stations needs acquisition of the dimensional deviation values of the assembly parts after assembling of the front stations; the compensation scheme decision module is the core content, and comprises three steps: assembly deviation modeling, compensation dosage optimization model modeling, and optimal compensation dosage solution, and is used for determining the jig positioning compensation dosage for the subsequent stations so as to enable the assembly deviation of the subsequent stations to be minimum; and the compensation implementation module adjusts a jig positioning point according to a compensation decision scheme. The flexible member assembling dimensional deviation control method based on multi-station assembly jig compensation can scientifically, accurately and instantly reduce the assembly deviation for each station, and can realize station-by-station control for multi-station assembly deviation of the flexible member, and can reduce the dimensional deviation after assembling of the multi-station for the flexible member.

Description

technical field [0001] The invention relates to computer-aided manufacturing technology, in particular to a multi-station assembly deviation control method for flexible parts, in particular to a flexible-part assembly dimension deviation control method based on multi-station assembly fixture compensation. Background technique [0002] Due to its own deformable and resilient characteristics, flexible parts can overcome the gap and interference caused by errors through deformation during the assembly process, but the assembly will deform and generate assembly stress. In actual engineering, complex products often need to be assembled at multiple stations. When the station is changed, the assembly deviation will be transmitted with the advance of the station and gradually accumulated, and at the same time, the relocation deviation will be generated due to the transformation of the positioning datum. In multi-station assembly, excessive dimensional deviation often leads to probl...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of poor adaptability control of multi-station assembly deviation of flexible parts, and to invent a method for controlling the size deviation of flexible parts assembly based on compensation of multi-station assembly fixtures

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