横拉杆接头加工工艺规程及加工螺纹孔夹具设计（机械CAD图纸）.doc

毕业设计说明书模板 横拉杆接头加工工艺规程及加工螺纹孔夹具设计 系 、 部： 学生姓名： 指导教师： 专 业： 班 级： 完成时间： 摘 要 本次设计是对汽车转向横拉杆右接头零件的加工工艺规程及一些工序的专用夹具设计。汽车的转向横拉杆右接头零件主要加工表面是平面及孔。由加工工艺原则可知，保证平面的加工精度要比保证孔的加工精度容易。所以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加工精度。基准选择以右接头M52螺纹孔作为精基准，以不加工外圆作为精基准作为精基准。主要加工工序安排是先以镗削M52螺纹孔做为其他面的定位基准，再以端面定位加工出工艺孔。在后续工序中除个别工序外均用端面和工艺孔定位加工其他孔与平面。整个加工过程均选用普通车床。 关键词 ：汽车转向横拉杆右接头 加工工艺 专用夹具 ABSTRACT This design is on the vehicle steering levers of joint parts processing technology of the right procedures and some process of special jig design. The car turned to horizontal bars right joint parts processing surface is flat and main hole. The processing technology, it is known that guarantee the principle in the plane of the machining accuracy than guarantee hole machining accuracy easy. So this design follow the principle of face first hole. And in the plane of the hole processing clear divided into rough machining and intensive processing stage in order to ensure that the processing accuracy. Benchmark choose the right joint M52 threaded hole as pure benchmark, with the benchmark as fine processing round as fine a benchmark. Main processing process arrangement is first to boring cut M52 threaded hole as the other position datum, again with end face positioning processing technology hole out. In the subsequent process in addition to the individual with the process are face and technology hole hole and other plane positioning processing. The whole process are chosen for ordinary lathe. Keywords The car turned to lever connectors Processing technology special fixture 目录 第一章 绪论 6 第二章 零件分析 7 2.1 零件的作用 7 2.2 零件的工艺分析 7 2.2.1 以圆柱体中心为基准的加工表面及螺纹孔 8 2.2.2 孔中心为基准加工M25X1.5HL-60 8 2.2.3工艺过程设计所采取的相应措施 8 第三章 工艺规程设计 9 3.1确定毛坯的制造形式 9 3.1.1基准面的选择 9 3.2制定工艺路线 10 3.2.1工艺线路方案一 10 3.2.2工艺路线方案二 11 3.2.3工艺方案的比较与分析 11 3.3机械加工余量工艺尺寸及毛坯尺寸的确定 12 3.3.1 孔、螺纹孔 12 3.3.2钻4孔 13 3.3.3钻X80孔底孔用于加工M25X1.5HL-65螺纹孔 13 3.3.4车M25X65螺纹孔 14 3.4确定切削用量及基本工时 14 3.4.1工序Ⅰ加工34孔的端面1，用作为基准1。以32圆柱体和34孔的端面2为定位基准，保证。（如毛坯