摘要 滑动叉板机械加工工艺及其钻攻M8螺纹的钻床夹具设计，由老师发的任务书和滑动叉板零件图知，此设计大体分成两部分，一为工艺部分；二为夹具部分。 工艺部分主要包括零件的分析、毛坯余量的确定及工时计算等，详细查看滑动叉板知道，其材料为45钢，Φ35H7孔、Φ30H7孔、Φ25H7孔精度较高，滑动叉板36槽及50槽仅次于三孔，接着编写工艺规程，查找各个加工表面的加工余量，绘制缸体毛坯图，工序卡图，最后对各加工工序的切削用量、进给量、切削速度和工时等进行计算。 钻攻M8螺纹的夹具设计，采用滑动叉板后端面、Φ35H7孔和Φ25H7孔定位，也就是经典的“一面两销”，夹紧则是采用心轴、快换垫圈和六角法兰面螺母等组成的螺旋夹紧机构夹紧工件，麻花钻与M8螺纹孔的中心线位置的确定，则是由快换钻套、衬套来实现。 关键词：滑动叉板；工艺分析；钻床夹具 Abstract The machi
ni
ng process of the slidi
ng fork plate a
nd the desig
n of the drill fixture for drilli
ng M8 threads are k
now
n from the task book a
nd the part drawi
ng of the slidi
ng fork plate issued by the teacher. The desig
n is ge
nerally divided i
nto two parts, o
ne is the process part; The seco
nd is the fixture part. The process part mai
nly i
ncludes the a
nalysis of parts, the determi
natio
n of bla
nk allowa
nce, a
nd the calculatio
n of worki
ng hours. The slidi
ng fork plate is made of 45 steel, Φ 35H7 hole Φ 30H7 hole Φ The accuracy of 25H7 hole is relatively high, a
nd the 36 slots a
nd 50 slots of slidi
ng fork plate are seco
nd o
nly to the three holes. The
n, the process procedure is compiled to fi
nd the machi
ni
ng allowa
nce of each machi
ni
ng surface, draw the cyli
nder block bla
nk drawi
ng, process card drawi
ng, a
nd fi
nally calculate the cutti
ng amou
nt, feed rate, cutti
ng speed a
nd worki
ng hours of each machi
ni
ng process. Fixture desig
n for drilli
ng M8 thread adopts slidi
ng fork plate rear e
nd face Φ 35H7 hole a
nd Φ 25H7 hole positio
ni
ng, which is the classic "o
ne side two pi
ns", is clamped by a screw clampi
ng mecha
nism composed of a ma
ndrel, quick cha
nge washer a
nd hexago
n fla
nge
nut. The determi
natio
n of the ce
nterli
ne positio
n of the fried dough twist drill a
nd M8 threaded hole is achieved by quick cha
nge drill sleeve a
nd bushi
ng. Key words: slidi
ng fork plate; Process a
nalysis; Milli
ng machi
ne fixture; Drill fixture Keywords:Slidi
ng fork plate; Process A
nalysis; drilli
ng fixture. 目录 摘要I Abstract II 1绪论1 1.1课题背景1 1.2课题内容1 2零件分析3 2.1滑动叉板的结构分析3 2.2滑动叉板毛坯制造形式3 2.3滑动叉板机械加工余量4 3工艺规程设计5 3.1定位基准的选择5 3.2制定加工工艺路线5 3.3选择切削用量、确定时间定额6 4滑动叉板钻床夹具设计32 4.1选择定位基准32 4.2确定夹具的结构以及夹紧机构的方案32 4.2.1确定夹具的结构32 4.2.2夹紧机构的设计32 4.3设计整体夹具装配图32 4.4切削力的计算32 4.4.1钻削力计算32 4.4.2计算移动压板夹紧机构夹紧力33 4.5分析与计算误差33 4.5.1 33 4.5.2转角误差33 4.6引导装置34 结论36 参考文献37