基于ANSYS的系列铜管夹具优化设计

Optimization Design of Series Copper Pipe Fixture Based on ANSYS

摘要: 针对四通阀铜管在管端倒角作业中的装夹问题，设计了一种采用外圆定位装夹的系列铜管握夹夹具，实现了对于系列铜管内管面无损伤的定位装夹。夹具结构初步设计后，对夹具装夹的铜管进行静力学分析。验证出铜管变形未超出工艺要求，证明了夹具结构的可行性。之后针对各设计参数进行灵敏度分析，通过响应面法优化设计参数，保证在不增大夹具整体质量的情况下，铜管所产生的静变形量和最大等效应力最小。结果表明：在保证夹具整体质量的情况下，铜管所受最大变形量减少了24.4%，最大等效应力降低了28.5%。

Abstract: Aiming at the clamping problem of four-way valve copper pipe in the chamfering operation, a series of copper pipe clamping fixture with cylindrical positioning is designed to realize the non-damaging positioning clamping of the inner tube surface of the series copper pipe. After the preliminary de-sign of the fixture structure, the static analysis of the clamping copper pipe is carried out. It is veri-fied that the deformation of the copper pipe does not exceed the technological requirements, which proves the feasibility of the fixture structure. Then the sensitivity analysis of each design parameter is carried out, and the response surface method is used to optimize the design parameters to ensure that the static deformation and the maximum equivalent stress of the copper tube are minimized without increasing the overall mass of the fixture. The results show that the maximum deformation of the copper pipe is reduced by 24.4% and the maximum equivalent stress is reduced by 28.5% when the whole quality of the fixture is guaranteed.