机械5

KST1002换挡拨叉的加工工艺及铣Φ10上端面夹具设计 摘要 这次设计的主要内容是KST1002换挡拨叉的加工工艺及铣Φ10上端面夹具设计，通过对任务书的解读，内容有加工工艺规程，专用铣床夹具。在掌握零件作用以及对其进行分析的基础上，完成了这2点设计内容。 设计之初通过资料的查阅了解和掌握机床夹具的相关知识，为后面的设计和计算提供保障。说明书里面的知识点主要有对机床夹具进行设计、公差等。首先搞清楚这个加工的零部件，然后对它进行了分析，这样就可以在加工的时候精确度更高，将零件的标准定下来，之后在算一下每一个步骤的切削用量的大小；夹具设计包括：定位零部件，夹紧零部件，另外还有进行引导的哪些零部件。在这还要特别关注的是，在对零部件进行定位的时候，必然会有偏差出现，这个偏差一定要在规定的范围里面，这样才可以对这个夹具的好处，坏处进行了解，对它进行改善。 通过上面的设计、分析和计算，圆满的完成了本次课程设计的所有任务，在巩固之前所学知识的同时，还为今后的学习夯实基矗 关键词：KST1002、换挡拨叉、加工工艺，Φ10上端面、铣床 Abstract The mai
n co
nte
nt of this desig
n is the processi
ng tech
nology of KST1002 shifti
ng fork a
nd the desig
n of the upper e
nd fixture of milli
ng_10. Through the i
nterpretatio
n of the task book, the co
nte
nts of the processi
ng procedures, special milli
ng machi
ne fixture. O
n the basis of masteri
ng the fu
nctio
n of parts a
nd a
nalyzi
ng them, the 2 poi
nts are completed. At the begi
n
ni
ng of the desig
n, through the co
nsulti
ng of i
nformatio
n to u
ndersta
nd a
nd master the releva
nt k
nowledge of machi
ne tools a
nd fixtures, to provide support for the later desig
n a
nd calculatio
n. The k
nowledge poi
nts i
n the ma
nual mai
nly i
nclude the desig
n a
nd tolera
nce of machi
ne tools a
nd fixtures. Firstly, make sure of the parts, the
n a
nalyze them, so that they ca
n be more accurate i
n processi
ng, set the sta
ndard of the parts, the
n calculate the cutti
ng parameters of each step; fixture desig
n i
ncludes: positio
ni
ng parts, clampi
ng parts, a
nd other guidi
ng parts. Which parts? I
n this particular co
ncer
n is that i
n the positio
ni
ng of parts, therewill i
nevitably be a deviatio
n, the deviatio
n must bewithi
n the prescribed scope, so that the adva
ntages a
nd disadva
ntages of this fixture ca
n be u
nderstood, to improve it. Through the above desig
n, a
nalysis a
nd calculatio
n,we have successfully completed all the tasks of this course desig
n. While co
nsolidati
ng the previous k
nowledge,we also lay a solid fou
ndatio
n for future lear
ni
ng. Keywords: KST1002, shift fork, processi
ng tech
nology, 10 face a
nd milli
ng machi
ne 目录 摘要I Abstract II 1引言1 2零件分析及毛坯的选择2 2.1零件的作用2 2.2零件分析3 2.2.1组成表面3 2.2.2技术要求3 2.2.3形位公差3 2.3毛坯的选择4 2.3.1选择毛坯的原则4 2.3.2零件毛坯的选择及制造方法4 3拟定工艺路线6 3.1定位基准的选择6 3.1.1粗基准的选择6 3.1.2精基准的选择6 3.2加工工艺路线选择、比较与确定7 3.3加工设备、夹具、刀具及量具的选择8 4加工余量、切削用量及切削时间的确定10 4.1加工余量的确定10 4.2切削用量及切削时间的确定12 5铣Ф10上端面专用夹具设计29 5.1工件定位的基本原理29 5.2夹具设计对定位元件的基本要求29 5.3定位方案及定位元件的确定与选择29 5.3.1确定定位方案与定位元件的原则29 5.3.2定位方案的确定29 5.3.3定位元件的选择30 5.4夹紧方案及装置的确定与选择31 5.4.1夹紧装置设计的基本要求及遵循原则31 5.4.2夹紧方案的确定31 5.4.3夹紧元件的选择31 5.5夹具体的确定32 5.6导向装置的确定33 5.7切削力的计算34 5.8夹紧力的计算34 5.9定位误差的分析35 结论36 致谢37 参考文献38