CA6140拨叉加工工艺设计及加工Φ6孔的夹具设计(CAXA)(课程设计)(任务书,设计说明书6900字,工序卡,工艺卡,CAXA图4张)
摘 要
这次设计的是CA6140车床（831005）拨叉，包括零件图、毛坯图、装配图各一张，机械加工工艺过程卡片和与工序卡片各一张。首先我们要熟悉零件和了解其作用，它位于车床变速机构中，主要起换档作用。然后，根据零件的性质和零件图上各端面的粗糙度确定毛坯的尺寸和械加工余量。最后拟定拨差的工艺路线图，制定该工件的夹紧方案，
画出夹具装配图。
就我个人而言，我希望能通过这次课程设计，了解并认识一般机器零件的生产工艺过程，巩固和加深已学过的技术基础课和专业课的知识，理论联系实际，从中锻炼自己分析问题、解决问题的能力，为今后的工作打下一个良好的基础，并且为后续课程的学习打好基础。
Abstract
This time I design the lathes of the shift forks CA6140(831005), including that the part pursuing , the blank pursues , assembling pursues , the machine work procedure card the working procedure card every sheet .We should know the part very well and know its effect first , it is worked in the organization which is used for change the speed in a lathe, and the mainly role of the part is alter the speed. Then, we design the dimension of the blank and instrument process a margin of the part according to part character and the harshness of each face .Finally, I design the handicrafts route picture of the shift forks, work out the fastening motion scheme being workpiece's turn , draw up clamp assembling picture.
As far as my individual be concerned, I want to knowing the general productive technology of machine part , consolidating and deepening the knowledge of basic course and specialized course what I have already learned , integrates theory with practice, and improve the
ability to solve problems, what’s more , striking the basis for the future work and the following course’s studying .
目 录
一、零件工艺性分析 1
1.1、零件的作用 1
1.2、零件的工艺分析 1
二、机械加工工艺规程设计 2
2.1、确定毛坯的制造形成 2
2.2、基准的选择 2
2.2.1粗基准的选择 2
2.2.2精基准的选择 2
2.3、制定工艺路线 2
2.3.1工艺路线方案一 3
2.3.2工艺路线方案二 3
三、机械加工余量、工序尺寸及毛皮尺寸的确定 4
3.1、毛坯余量及尺寸的确定 4
3.2、确定工序 4
四、夹具的设计 12
4.1、提出问题 12
4.2、设计思想 13
4.3、夹具设计 13
4.3.1定位分析 14
4.3.2切削力、夹紧力、切屑用量和切屑速度的计算 14
4.3.3夹具操作说明 15
五.体会与展望 15
六．参考文献 16
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