机械5

连杆铣槽夹具设计 摘要 随着机械加工工业的飞速发展，对提高加工效率和改善劳动强度的要求已经越来越高，对于各式各样的结构复杂的工件，普通的机床夹具已经不能满足其加工要求。因此结合现状，为了适应某一工件的某一工序加工的要求而专门设计制造的专用夹具便应运而生，本次设计为连杆铣槽专用夹具。它针对连杆的结构特点，采用了“一面两孔”的定位方案，以支承板、圆柱销、削边销为定位元件。使工件安装方便，且能保证加工精度。压紧装置以杠杆原理为核心，双压板压紧工件，同时采用联动机构，左侧压板压紧之后右侧自动压紧。引用液压系统为夹紧动力源，降低了工人的劳动强度。采用三个工件平行加工方案，使加工三个工件的机动时间合为一个，提高了工作效率。 关键词：定位、夹紧、液压 Abstract With the machi
neryof the rapid developme
nt of processi
ng i
ndustries,to e
nha
nce efficie
ncya
nd improve the processi
ng of labor i
nte
nsityhas bee
n i
ncreasi
ng dema
nd for awide ra
nge of complexstructure of theworkpiece,ordi
narymachi
ne fixture has bee
n u
nable to meet its processi
ng requireme
nts.Sowith the status quo,i
n order to meet a certai
n part of a process of processi
ng the request of the specialized desig
n a
nd ma
nufacture of special fixturewill come i
nto bei
ng,such as co
n
necti
ng rod mill slot dedicated fixture.It is aimed at co
n
necti
ng rod of the structural features a
nd adopted the"o
ne-two"targeted programmes to e
nsure that theworkpiece be processed o
n the locatio
n accuracy,more co
nve
nie
nt i
nstallatio
n of theworkpiece,assisted bya shortworki
ng hours.At the same time addi
ng a higher degree of automatio
n of hydraulic clampi
ng system,reduci
ng the labor i
nte
nsityof theworkers.Three parts used i
n parallel processi
ng programmes,to e
nable the processi
ng of the three parts of a mobile time a
nd improvework efficie
ncy.I
n short,with the fixture for the use a
nd further improveme
nt ca
n effectivelyshorte
n the process time to meet the evolvi
ng
needs of productio
n. Keywords: positio
ni
ng,clampi
ng,hydraulic 目录 摘要……………………………………………………………………2 第一章概述…………………………………………………………4 1.1夹具的特点…………………………………………………4 1.2夹具的发展趋势……………………………………………9 1.3夹具的设计步骤……………………………………………10 第二章夹具的具体结构设计………………………………………15 2.1工件分析……………………………………………………15 2.2工件的定位方案的设计……………………………………16 2.3工件的夹紧方案的设计……………………………………17 2.4刀具的对刀方案设计………………………………………21 2.5夹具的安装方式及夹具体的结构型式……………………21 2.6液压系统的设计与计算……………………………………24 第三章夹具的相关计算和精度校验………………………………30 3.1定位销的尺寸计算…………………………………………30 3.2夹紧力的计算………………………………………………31 3.3加工误差的分析……………………………………………33 第四章夹具的安装…………………………………………………36 5.1夹具的安装顺序……………………………………………36 5.2夹具在操作时的注意事项…………………………………37 结束语………………………………………………………………39 谢辞…………………………………………………………………41 参考文献……………………………………………………………42