机械5

TC4钛合金接头高速加工工艺与夹具设计 摘要 本文选择了钛合金接头的制造加工做为研究对象，该零件是机器部位的重要件，其作用是机体与机体的连接。该零件为钛合金，外形复杂，零件上孔径精确度高，孔位尺寸要求严格，并且相互关联，协调要求高，加工困难。 本文主要研究内容是TC4钛合金接头高速加工工艺与夹具设计。制定了加工偏心轴的机械加工工艺路线，详细计算了加工余量、切削用量、尺寸公差，确定各工序尺寸、工序加工余量、加工工时、机械加工三要素等，选择其加工设备。通过本设计掌握零件的加工过程分析、工艺卡片的编制和步骤。学会应用手册、标准、规范等资料。认识到工艺在机械制造中的重要性。了解刀具的选用规则，产品质量、精度、寿命等属性和节约材料，降低成本，最重要的是提高生产经验。 通过和老师的商讨决定设计加工Ф12孔的专用钻床夹具，设计内容有：定位方案和夹紧方案的确定，定位元件和夹紧元件的选择，夹具体的设计，钻削力的计算等等。 关键词：TC4钛合金、接头、高速加工、工艺、加工Ф12孔 ABSTRACT This paper chooses the ma
nufacture a
nd processi
ng of tita
nium alloy joi
nt as the research object,which is a
n importa
nt part of the machi
ne part, its role is the body a
nd the body co
n
nectio
n. The parts are tita
nium alloy, complex shape, high precisio
n aperture o
n the parts, hole size requireme
nts of strict, a
nd i
nterrelated, coordi
natio
n requireme
nts, processi
ng difficulties. The mai
n research co
nte
nts of this paper are the high speed machi
ni
ng tech
nology a
nd fixture desig
n of TC4 tita
nium alloy joi
nt. The machi
ni
ng process of the ecce
ntric shaft is machi
ned, a
nd the machi
ni
ng allowa
nce is selected i
n detail. The machi
ni
ng allowa
nce is selected i
n detail, such as machi
ni
ng allowa
nce, cutti
ng amou
nt, size tolera
nce, determi
natio
n of each process size, process processi
ng allowa
nce, processi
ng time a
nd machi
ni
ng. Through this desig
n master parts of the processi
ng process a
nalysis, process card preparatio
n a
nd steps. Lear
n the applicatio
n ma
nual, sta
ndards,
norms a
nd other i
nformatio
n. Recog
nize the importa
nce of tech
nology i
n machi
nery ma
nufacturi
ng. U
ndersta
nd the rules of selectio
n of tools, product quality, accuracy, life a
nd other properties a
nd save materials, reduce costs, the most importa
nt thi
ng is to improve productio
n experie
nce. Through the discussio
nwith the teacher decided to desig
n a
nd processi
ngФ12 hole dedicated drilli
ng fixture, the desig
n co
nte
nt positio
ni
ng a
nd clampi
ng program to determi
ne the positio
ni
ng compo
ne
nts a
nd clampi
ng compo
ne
nts selectio
n, the desig
n of the clip, the calculatio
n of drilli
ng force a
nd so o
n. Keywords TC4 tita
nium alloy, joi
nt, high-speed processi
ng, tech
nology, processi
ngФ12 hole 目录 摘要I ABSTRACT II 第1章绪论1 1.1 TC4钛合金的概述1 1.2机加工工艺规程及机床夹具的概述2 1.3机床夹具的分类3 1.4机床夹具的发展方向3 第2章TC4钛合金机械加工工艺规程设计5 2.1零件的作用、设计基准及技术要求5 2.1.1零件的作用5 2.1.2零件的设计基准5 2.1.3零件的组成表面6 2.2零件加工表面的分析6 2.3零件的机械加工工艺性、材质及热处理要求7 2.3.1零件的机械加工工艺性7 2.3.2零件的材质7 2.4基准的选择及加工方案的选择与确定7 2.4.1基准的选择7 2.4.2加工方案确定8 2.5毛坯尺寸及工艺尺寸的确定9 2.5.1毛坯尺寸的确定9 2.5.2工艺尺寸的确定10 2.6机械加工机床、刀具及量具的选择13 2.6.1机械加工机床的选择13 2.6.2机械加工刀具的选择14 2.6.3机械加工量具的选择15 2.7确定切削用量及基本工时16 第3章钻Ф12孔专用夹具的设计34 3.1定位方案及定位元件的确定与选择34 3.2夹紧方案及装置的确定与选择35 3.3夹具体的确定35 3.4导向装置的确定36 3.5钻削力的计算39 3.6定位误差的计算39 结论40 致谢41 参考文献42