机械5

测微仪架加工工艺及夹具设计 [摘要]本次是对测微仪架的加工工艺规程设计和其中铣槽工序的专用夹具设计，在零件图的分析下，根据实际生产经验和导师指导的基础上，通过对比多个加工工艺方案优选制定出加工工艺过程。在实际生产过程中，必须按照设计出来的工艺规程规定的方案进行加工，所以制定工艺规程必须要在一定条件下以低成本、高效率的加工完成出符合图纸及技术要求的零件。 在制定出合理的工艺方案时，通过任务书上的要求做出工艺设计说明书和夹具的结构设计。在夹具进行设计时，要求对定位、夹紧等各个部分的计算以及总体布局分析，最后绘制出夹具装配图和零件图。 [关键词]：工艺规程设计；工序；切削用量；夹紧定位 Machi
ni
ng Tech
nology a
nd Fixture Desig
n of Micrometer Frame [Abstract] This paper is about the desig
n of the processi
ng procedure a
nd the desig
n of the special fixture for the milli
ng process of the micrometer sta
nd. Based o
n the a
nalysis of the part drawi
ngs a
nd the actual productio
n experie
nce a
nd the guida
nce of the i
nstructor, the processi
ng process is optimized by compari
ng several processi
ng schemes. I
n the actual productio
n process, it must be processed accordi
ng to the pla
n stipulated by the desig
ned process rules, so the formulatio
n of process rules must be completed u
nder certai
n co
nditio
ns with low cost a
nd high efficie
ncy to meet the drawi
ngs a
nd tech
nical requireme
nts of the parts. Whe
n formulati
ng a reaso
nable process pla
n, the process desig
n i
nstructio
ns a
nd fixture structure desig
n are made accordi
ng to the requireme
nts of the task book. I
n fixture desig
n, it is required to calculate a
nd a
nalyze the locatio
n, clampi
ng a
nd other parts as well as the overall layout. Fi
nally, the fixture assembly drawi
ng a
nd parts drawi
ng are draw
n. [Keywords] Process pla
n
ni
ng; Procedure; Cutti
ng parameters; Clampi
ng positio
ni
ng 目录 1前言………………………………………………………………………………………1 2选题背景…………………………………………………………………………………1 2.1相关课题在当今国内外的现状………………………………………………1 2.2测微仪架数控加工技术的现状………………………………………………2 3零件的工艺分析…………………………………………………………………………2 3.1零件的作用……………………………………………………………………2 3.2零件图的工艺分析……………………………………………………………2 3.3零件图的尺寸标注……………………………………………………………3 4加工工艺方案设计………………………………………………………………………4 4.1确定毛坯的制造方式…………………………………………………………4 4.2定位基准的选择………………………………………………………………4 4.2.1粗基准的选择…………………………………………………………5 4.2.2精基准的选择…………………………………………………………5 4.2.3加工阶段的划分………………………………………………………6 4.2.4机械加工工序…………………………………………………………7 4.3确定工艺方案…………………………………………………………………7 4.3.1制定工艺方案…………………………………………………………7 4.3.2工艺方案的比较与分析………………………………………………9 4.3.3机械加工余量、工序尺寸的确定………………………………………9 4.3.4确定切削用量和基本用时……………………………………………12 5夹具设计………………………………………………………………………………24 5.1问题的提出……………………………………………………………………24 5.2夹具的设计……………………………………………………………………25 6总结……………………………………………………………………………………26 参考文献…………………………………………………………………………………27 致谢………………………………………………………………………………………28