机械5

车床手柄座机械加工工艺规程及钻φ14H7孔夹具设计 摘要 此次设计内容涵盖了机械制造工艺学、机床夹具设计、金属切削机床、公差配合与技术测量、机械设计等多方面的知识。我设计的是手柄座机械加工工艺规程和针对φ14H7mm孔加工的夹具进行设计。在进行工艺设计时要先对零件进行详细分析，要知道它每个表面、各个孔和槽所要达到的加工要求，接着通过这些要求设计出它的毛坯，并选择好加工时用来定位的基准，关键要确定出每道工序所用的设备及其切削用量；最后针对φ14H7mm孔加工进行夹具设计，在进行其设计之前要考虑好它的各个组成部分，如定位装置、夹紧元件、刀具导向元件或装置、连接原件、夹具体以及其它原件或装置；并计算在加工过程产生的定位误差。通过查阅资料可知这种工件在使用的时候不会经常发生变动，所以在很大程度只起支撑的作用却不会受到很大的冲击载荷，在设计其夹具时还应该考虑这个因素。 关键词：手柄座零件；工艺规程；夹具；设计 ABSTRACT This desig
n covers the k
nowledge of mecha
nical ma
nufacturi
ng tech
nology, machi
ne tool fixture desig
n, metal cutti
ng machi
ne tool, tolera
nce a
nd tech
nical measureme
nt, mecha
nical desig
n a
nd so o
n. I desig
ned the mecha
nical processi
ng procedure of the ha
ndle seat a
nd the fixture desig
ned for the processi
ng of the 14H7mm hole. I
n the process desig
n, detailed a
nalysis was carried out o
n the parts before you k
now it every surface, every hole a
nd slot is required for processi
ng the bla
nk, a
nd the
n pass these requireme
nts to desig
n it a
nd choose the good process used for locati
ng the be
nchmark, every worki
ng procedure to ide
ntify the key equipme
nt a
nd its cutti
ng dosage; Fi
nally for the phi 14 h7mm hole machi
ni
ng fixture desig
n, to co
nsider it i
n adva
nce of its desig
n of each compo
ne
nt, such as positio
ni
ng device, clampi
ng eleme
nt, cutter guide eleme
nt, or device, origi
nal co
n
nectio
n, specific a
nd origi
nal or other device; A
nd calculate the positio
ni
ng error duri
ng processi
ng. By looki
ng at data shows the artifacts whe
n usi
ng wo
n't cha
nge ofte
n, so much as supporti
ng role o
nly has
not bee
n great impact load, should also take this factor i
nto co
nsideratio
n whe
n desig
ni
ng the fixture. Key words：ha
ndle block; tech
nological procedure; clamp; desig
n 目录 摘要I ABSTRACT II 1序言1 1.1设计目的1 1.2设计意义1 1.3手柄座的作用2 1.4机床夹具的发展2 2分析工件3 2.1零件的技术要求3 2.2各表面的工艺分析4 2.2.1各孔的加工4 2.2.2各槽的加工4 2.2.3每个平面的加工5 2.2.4 M10螺纹孔的加工5 3工件的工艺过程设计6 3.1确定生产类型、毛坯6 3.2基面的选择6 3.2.1选择粗基准6 3.2.2选择精基准6 3.3拟定加工路线7 3.3.1工艺路线方案一7 3.3.2工艺路线方案二7 3.3.3两种方案的分析和比较8 3.3.4确定最终方案8 3.4确定毛坯尺寸、加工余量和工序尺寸9 3.4.1确定φ46mm圆柱两个端面的毛坯尺寸和机械加工余量9 3.4.2确定φ14H7mm孔端面的毛坯尺寸和机械加工余量10 3.4.3确定其它尺寸和机械加工余量10 3.5切削用量和基本工时的计算12 4工件夹具设计23 4.1提出问题23 4.2进行夹具设计23 4.2.1定位元件、定位基准及其他设计元件的选择23 4.2.2切削力和夹紧力的计算、夹紧装置设计与选择24 4.2.3、定位误差分析26 4.2.4、夹具设计因素和操作说明26 总结29 参考文献30 致谢31