机械5

摘要 本次设计选择活动钳口为被加工件。做出零件的机械加工工艺规程及钻2-m6底孔专用夹具设计，具体如下： 1、零件分析，主要是零件作用的分析和工艺分析，根据零件图提出的加工要求，确定毛坯的制造形式。 2、选择基面，确定加工过程中的粗基准和精基准。根据选好的基准，制订工艺路线。根据已经选定的工序路线，确定每一步的切削用量及基本工时，并选择合适的机床和刀具。 3、设计钻2-m6底孔夹具。对定位方案及元件，夹紧方案及元件进行确定，然后计算切削力、夹紧力和定位误差的分析等。完成夹具装配图及夹具体图的绘制等。 关键词：活动钳口；加工工艺；专用夹具；工艺路线；切削力 Abstract This desig
n chooses the movable clamp as the processed part. Maki
ng the machi
ni
ng process rules of the parts a
nd desig
ni
ng the special fixture for drilli
ng 2-M6 bottom hole, as follows: 1. Parts a
nalysis, mai
nly part fu
nctio
n a
nalysis a
nd process a
nalysis, accordi
ng to the processi
ng requireme
nts of the parts drawi
ng, determi
ne the ma
nufacturi
ng form of the bla
nk. 2. Select the base pla
ne to determi
ne the rough a
nd precise datum i
n the process of processi
ng. Accordi
ng to the selected be
nchmark, the tech
nological route isworked out. Accordi
ng to the selected process route, the cutti
ng parameters a
nd basicworki
ng hours of each step are determi
ned, a
nd the appropriate machi
ne tools a
nd tools are selected. 3. Desig
n the bottom hole fixture for drilli
ng 2-m6. The positio
ni
ng scheme a
nd compo
ne
nts, clampi
ng scheme a
nd compo
ne
nts are determi
ned, a
nd the
n the cutti
ng force, clampi
ng force a
nd positio
ni
ng error are calculated. Complete fixture assembly drawi
ng a
nd fixturevolume drawi
ng. Keywords: movable clamp; processi
ng tech
nology; special fixture; process route; cutti
ng force 目录 摘要1 Abstract 2 第一章绪论1 1.1引言1 1.2机械加工工艺规程的作用1 1.3研究方法及技术路线2 1.4课题背景及发展趋势3 第2章零件的分析5 2.1零件的作用5 2.2零件的工艺分析5 第3章工艺规程设计6 3.1确定毛坯的制造形式6 3.2基面的选择6 3.3制定工艺路线7 3.4确定各工序的加工余量9 3.5确定切削用量及基本工时10 第4章夹具设计17 4.1问题提出17 4.2定位机构17 4.3夹紧机构19 4.4机床夹具的总体形式21 4.5绘制夹具零件图22 谢辞23 参考文献23