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阀体的加工工艺及铣67上端面夹具设计 摘要 本设计主要内容包括阀体的加工工艺及铣夹具设计。在设计过程中完成了零件图、毛坯图、夹具装配图和夹具体等所有非标零件图的绘制及说明书的编写。 本次设计的零件—阀体是汽车上重要的零件之一。该零件的作用能够控制流体实现不同方向、不同压力、不同流量的转换。通过对零件图的分析，该零件圆柱孔、螺纹孔比较多，孔与孔之前的公差、位置要求比较高。通过对零件毛坯、生产类型、工艺路线及切削用量的确定。完成阀体全部加工需经过铣削、车削以及钻削加工。 本次铣夹具针对零件图仰视图67上端面设计了一套铣床专用夹具，采用支承板、定位座、定位块来满足定位要求，又通过夹紧装置保证加工过程中不会产生较大误差。其中间过程对夹紧装置进行了受力分析，保证了夹紧的可靠性。 关键词：阀体、加工工艺、铣夹具、仰视图67上端面、定位 ABSTRACT The mai
n co
nte
nts of this desig
n i
nclude thevalve body processi
ng tech
nology a
nd milli
ng fixture desig
n. I
n the desig
n process to complete the parts drawi
ngs, rough drawi
ngs, fixture assembly drawi
ngs a
nd clamps a
nd all
no
n-sta
ndard parts of the drawi
ng a
nd descriptio
n of the preparatio
n. The desig
n of the parts- thevalve body is o
ne of the importa
nt parts of the car. The role of the part ca
n co
ntrol the fluid to achieve differe
nt directio
ns, differe
nt pressures, differe
nt flow co
nversio
n. Through the a
nalysis of the parts map, the parts cyli
ndrical holes, threaded holes more holes a
nd holes before the tolera
nces, the locatio
n of relatively high. Through the rough parts, productio
n types, process routes a
nd cutti
ng the amou
nt of determi
natio
n. Complete thevalve body to be processed through milli
ng, tur
ni
ng a
nd drilli
ng. The milli
ng fixture for the bottomview of the parts drawi
ngs 67 desig
ned a set of milli
ng machi
ne dedicated fixture, usi
ng the support plate, positio
ni
ng seat, positio
ni
ng block to meet the positio
ni
ng requireme
nts, but also through the clampi
ng device to e
nsure that the processwill
not have a greater error. The middle process of the clampi
ng device for the force a
nalysis to e
nsure the reliability of the clampi
ng. Keywordsvalve body, machi
ni
ng process, milli
ng fixture, bottomview 67 upper face, positio
ni
ng 目录 摘要I ABSTRACT II 1零件构造、作用、加工要求及形位公差分析1 1.1零件的构造分析1 1.1零件的作用1 1.3零件的表面粗糙度加工要求分析2 1.4零件的形位公差分析2 2零件生产类型、材料、制造形式的确定3 2.1零件生产类型的确定3 2.2零件材料的确定3 2.3零件制造形式的确定3 3零件加工工艺规程设计4 3.1零件加工基准的确定4 3.2零件工艺路线的确定4 3.3零件加工装备的确定5 3.4零件加工余量的确定5 3.5零件切削用量、加工工时的确定10 4专用夹具的设计29 4.1确定定位方案29 4.2确定定位元件29 4.3确定夹紧方案30 4.4确定夹紧元件30 4.5确定夹具体30 4.6确定对刀块31 4.7确定铣削力31 4.8确定夹紧力31 4.9确定定位误差32 结论33 致谢34 参考文献35