钻扩铰连杆螺栓孔夹具设计说明书.doc

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1、课程设计说明书机床夹具设计钻、扩、铰连杆大头孔与连杆盖的螺栓孔夹具指导教师学院名称工程学院专业及班级机械设计制造及其自动化1班提交日期答辩日期月【摘要】连杆是发动机的主要传动件之一，本文主要论述了连杆的加工工艺及其中一个加工环节的夹具设计。通过计算连杆的尺寸精度、形状精度以及位置精度，选择合适的夹具方案，设计出能保证加工精度的专用夹具。【关键词】连杆加工工艺夹具设计目录1序言····································································12零件设计具体容··········

2、···············································12.1零件的作用·····························································12.2零件的工艺性分析······················································12.2.1大、小头孔的尺寸精度、形状精度······································12.2.2大、小头孔轴心线在两个方向的平行度···········

3、························22.2.3大、小头孔中心距·····················································22.2.4大头孔两端面对大头孔中心线的垂直度···································22.2.5大、小头孔两端面的技术要求···········································22.2.6螺栓孔的技术要求···················································

4、··22.2.7有关结合面的技术要求·················································22.3零件工艺路线的制定·····················································32.4确定工序的加工余量、工序尺寸及公差·····································72.4.1大头孔端面加工余量···················································72.4.2大头孔外圆加工余量····

5、···············································72.4.3小头孔端面加工余量···················································82.4.4连杆体结合面加工余量·················································82.4.5螺栓座端面加工余量···················································82.4.6小头孔加工余量···················

6、····································92.4.7大头孔加工余量·······················································92.4.8螺栓孔加工余量·······················································92.5确定切削用及基本工时··················································102.5.1粗铣大小头孔两端面························

7、··························102.5.2粗磨大头孔两端面····················································102.5.3精磨大头孔两端面····················································112.5.4粗铣大头孔两侧面····················································112.5.5粗车大头孔外圆表面·································

8、·················112.5.6钻小头孔········································