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1、摘要本设计是基于典型轴零件的加工工艺规程及一些工序的专用夹具设计。典型轴零件的主要加工表面是平面及孔系。一般来说，保证平面的加工精度要比保证孔系的加工精度容易。因此，本设计遵循先面后孔的原则。并将孔与平面的加工明确划分成粗加工和精加工阶段以保证孔系加工精度。基准选择以典型轴的输入轴和输出轴的支承孔作为粗基准，以顶面与两个工艺孔作为精基准。主要加工工序安排是先以支承孔系定位加工出顶平面，再以顶平面与支承孔系定位加工出工艺孔。在后续工序中除个别工序外均用顶平面和工艺孔定位加工其他孔系与平面。支承孔系的加工采用的是坐标法镗孔。整个加工过程均选用组合机床。夹具选用专用夹具，夹紧方式多选用气动夹紧，夹紧
2、可靠，机构可以不必自锁，因此生产效率较高，适用于大批量、流水线上加工，能够满足设计要求。关键词：典型轴类零件；工艺；夹具；AbstractThis design is the special fixture for machining process of forked plectrum parts andprocess design based on. The main processing surface fork parts of the plane and a series ofhole. In general, ensure the machining accuracy of pla
3、ne than to ensure machining accuracyhole easily. Therefore, the design follows the surface after the first hole of the principle. Andthe hole and the plane processing clearly divided into roughing and finishing stages ofprocessing to ensure the accuracy of the hole. The supporting hole of the input
4、shaft and theoutput shaft of the benchmark by a shifting fork as a rough benchmark, the top two holes as aprecision technology base. Main processing process arrangement is to support holepositioning processing the top plane, and then the top plane and the series of supporting holelocation hole proce
5、ssing technology. In addition to the follow-up processes individualprocesses are used in the top plane positioning technology and other processing Kong andplane. The supporting hole processing system using the method of coordinate boring. Thewhole process selection of combined machine tool. The spec
6、ial fixture fixture, clampingmeans more choice of pneumatic clamping, clamping reliable, agencies can not self-locking,therefore the production efficiency is higher, suitable for high-volume, line processing, canmeet the design requirements.KeyWords: A typical shaft parts; technology; fixture;III目录摘
7、要.IIAbstract.III目 录. IV第 1 章 绪论. 11.1 夹具概述.11.2 机床夹具的功能.11.3 机床夹具的发展趋势.21.3.1 机床夹具的现状. 21.3.2 现代机床夹具的发展方向. 3第 2 章 零件的工艺性分析. 52.1 零件的作用.52.2 零件的工艺分析.5第 3 章 工艺规程设计. 63.1 确定毛坯的制造形成.63.2 基准的选择.63.3 制定工艺路线.6第 4 章 钻10 孔钻床专用夹具设计.84.1 问题的提出.84.2 夹具设计.84.2.1 定位基准的选定.84.2.2 夹紧力分析.84.2.3 定位误差的分析.94.3 夹具设计及操作.9第 4 章 铣槽 28H11 槽夹具专用夹具设计.11IV4.14.24.3问题的提出.11
