机械5

摘要 在“一带一路”利好背景下，我们国家产业结构以及机械加工制造业，其结构性变化明显。企业完成工装、夹具的优化以及改良是迫在眉睫。夹具这个传统的行业，在制造业飞速发展的今天，又被赋予了新是使命。因现在产品种类繁多，零件结构万万千千。专用夹具的设计在不可取代的基础上，变的越来越重要。 本次毕设的题目是工具座盖零件的加工工艺分析及夹具设计。本工件和工具底座配合使用的，连接和紧固连接件。该零件外形复杂，需要对其进行铸造，铸造后的零件要能够承受一定的载荷。 零件加工工艺的分析不仅完成了工件结构分析、基准选择、制造和加工方式选择，还根据加工工序卡完成了相应是切削数据的计算。本次专用夹具设计设计出了铣70左端面两个工序。完成了定位夹紧方案以及装置的设计，还对夹具上其他零部件进行了设计和确定，完成设计图纸量的要求等。 关键词：工具座盖；工艺分析；专用夹具 Abstract U
nder the favorable backgrou
nd o
ne belt, o
ne road, our cou
ntry's i
ndustrial structure a
nd machi
nery processi
ng a
nd ma
nufacturi
ng i
ndustry, its structural cha
nge is obvious. It is urge
nt for e
nterprises to complete the optimizatio
n a
nd improveme
nt of tooli
ng a
nd fixtures. Fixture this traditio
nal i
ndustry, i
n the rapid developme
nt of ma
nufacturi
ng today, has bee
n give
n a
new missio
n. Because there are ma
ny ki
nds of products a
nd thousa
nds of parts. The desig
n of special fixture is becomi
ng more a
nd more importa
nt o
n the basis of irreplaceable. The title of this desig
n is the processi
ng tech
nology a
nalysis a
nd fixture desig
n of tool base cover parts. Theworkpiece is usedwith the tool base to co
n
nect a
nd faste
n the co
n
nector. The shape of the part is complex, so it
needs to be cast, a
nd the casti
ng part should be able to bear a certai
n load. The a
nalysis of part processi
ng tech
nology
not o
nly completes theworkpiece structure a
nalysis, datum selectio
n, ma
nufacturi
ng a
nd processi
ng mode selectio
n, but also completes the calculatio
n of correspo
ndi
ng cutti
ng data accordi
ng to the processi
ng procedure card. The special fixture desig
n a
nd desig
n of milli
ng 70 left e
nd two processes. The positio
ni
ng a
nd clampi
ng scheme a
nd device desig
n are completed, a
nd other parts o
n the fixture are desig
ned a
nd determi
ned, a
nd the requireme
nts of desig
n drawi
ngs are completed. Keywords: tool seat cover; process a
nalysis; special fixture 目录 摘要I Abstract II 第一章零件的分析1 1.1零件的作用1 1.2零件的组成表面分析1 1.3零件的加工要求分析2 第二章确定零件材料、制造方式及生产类型3 2.1零件材料的确定3 2.2零件制造方式的确定3 2.3零件生产类型的确定5 第三章设计加工工艺规程6 3.1零件加工基准的确定6 3.2零件加工工艺路线的设计6 3.3零件加工工艺装备的选择7 3.4零件加工余量确定8 3.5确定切削用量、计算加工工时9 第四章铣70左端面专用夹具23 4.1定位机构23 4.1.1定位元件的确定23 4.1.2定位基准的选择23 4.2夹紧机构24 4.2.1对夹紧装置的基本要求24 4.2.2夹紧元件的选择24 4.2.3切削力的计算与夹紧力分析25 4.3机床夹具的总体形式25 4.3.1确定夹具体26 4.3.2确定联接体26 结论27 致谢28 参考文献29