煤机液压阀体智能夹具设计及关键零部件仿真分析

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中图分类号：TG76 文献标志码：A

文章编号：1001-4934（2025）06-0022-10

Coal machine hydraulic valve body intelligent fixture design and key components simulation analysis

LIHuirong，ZHANGHaochen，YANWeiliang，CHANGLiyuan （Shaanxi Institute of Technology，Xi'an 71O3Oo，Shaanxi，China）

Abstract： Coal machine lifting frame valve body valve hole system processing accuracy requirements are high，but in the actual production and processing need to be repeated manual clamping to replace the machining surface， resulting in the accumulation of errors，so the production efficiency and quality can not be guaranteed， is not suitable for the development of modern intelligent manufacturing requirements. In this paper， through the traditional onesided two-pin positioning scheme of the error calculation， compared with the pneumatic expanding locating pin combined with five-axis rotary table， the design of a vertical machining center intelligent fixture，so as to achieve a one-time clamping of the hydraulic valve body of the multi-faceted hole system processing. According to the working principle of the expanding positioning pin， in the process of expanding， the force around the positioning hole can be synchronized and clamped uniformly，which eliminates the error of the traditional one-sided two-pin clearance fit，so the repeatability of the positioning accuracy is improved from 0.117 mm to 0.02mm . The maximum deformation is 0.004mm and the maximum stress is 55.62 ΔMpa ，which are in line with the design requirements. The maximum deformation is 0.004mm and the maximum stress is 55. 62Mpa ，which are in line with the design requirements， realizing the intelligent machining and production requirements of this part.

Key words： coal machine；hydraulic valve;intelligent fixture；finite element simulation

0 引言

煤机液压阀体是煤炭机械中的重要组成部分，图1为国产某煤机举升架阀体阀，需要加工的孔系分布在相互垂直的三个表面上，并且相对位置、表面粗糙度、螺纹等加工要求较高[1]。（剩余8707字）