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1、2011届毕业设计说明书磨床尾座体加工工艺及夹具设计系、部： 机械工程系学生姓名： 曾巍指导教师：刘安民 职称 教授专 业：机械设计制造及其自动化班 级： 机本0702完成时间： 2011年5月I摘 要本课题主要是设计磨床尾座体的加工工艺及夹具的设计，在设计中采用先设计该尾座体的加工工艺在根据加工工艺来选取夹具的设计的方案和夹具的具体设计；而设计的重点是夹具的设计。由于工件的孔17和14都要以底面做为基准加工，故首先得做出底面的加工夹具。由于孔17的精度要求高，和定位尺寸误差小，为保证孔的位置和加工准确性我们一定在加工底面的时间通过画线找出底面的加工余量。这样就可以更好的保证孔17的位置和加工
2、精度！加工孔14的夹具其实就是在加工底面夹具的基础上加了一个45度斜度板。加工孔17的时间为保证相对于A和B面的平行度我们就得要准确的设计出以A和B面定位的夹具！还考虑到工件的圆度和圆柱度的误差小，我们设计的夹具就具有对孔17的夹具定位准确，和加工时间的震动小的要求，那就得在孔17的附近找个定位加紧点！关键词 加工工艺，夹具，尾座体，设计IIABSTRACTThis topic is mainly design that designs the tail a body of some tool machine toprocess the craft and tongses, adopting
3、to design first in the design a body of that tailprocesses the craft at according to process the craft to select by examinations thetongs of the project of the design and concrete design of the tongs;But the point ofdesign is the design of the tongs.Because the bore of the work piece 17 and 14 allwa
4、nt to face to be used as the basis to process with the bottom, past have to do abottom to face first of process the tongs.Because bore 17 of accuracy have highrequest, and position the size error margin small, for guarantee the position of the boreand process the accuracy we certainly at process the
5、 bottom to face of time pass todraw the line to find out the bottom to face of process the amount of remaining.Thuscan with better assurance bore 17 of position and process the accuracy!Process thebore 14 of tongs was in processing the foundation that the bottom faces the furnitureto add one 45 degr
6、ees of gradient plank in fact.Process the bore 17 of time is oppositefor assurance to run parallel with B face of in the A we have to design accurately withthe AN and B faces to settle for of tongs!Return in consideration of a degree of thework piece and the error margin of the cylinder degrees are
7、small, the furniture thatwe design have to the bore 17 of tongs fixed position is accurate, and process thevibration of time small, that have to in the bore 17 of neighborhood seek a fixedpositionto step upthepoint!Keyword process thecraft, tongs, abodyof tail, designIII目 录1前言.22零件分析.32.1零件的特点.32.2零
8、件工艺分析.43工艺规程设计.53.1确定毛坯的制造形成.53.2基面的选择.53.3制定工艺路线.53.3.1工艺路线方案一.63.3.2艺路线方案二.63.3.3.工艺方案的比较分析.73.4机械加工余量、工序尺寸及毛坯的确定.93.4.1孔 17 的端面的.93.4.2内孔 mmH717 .103.4.3燕尾面加工.103.4.4导轨面刨削加工.113.4.5孔 14 的内径表面.113.5确定切削用量及基本工时.123.5.1铣削 17H6的孔的两端面.123.5.2.钻孔（钻17H6的孔）.133.5.4.铣削M6的端面.153.5.5.钻孔（钻14的孔、钻M6的螺纹孔）.153.5.6.扩孔（扩17H6的孔）.163.5.7.惚 451 的倒角.173.5.8.扩孔（扩14的孔）.173.5.9.刨削导轨面.173.5.10.铣削22的退刀槽.193.5.11.刨削燕尾面（粗刨、精刨燕尾面）.20IV3.5.12.镗削（精镗、细镗 17 的孔）.
