杠杆零件图三维
杠杆的工艺规程及拉大孔六边形夹具设计
摘要
本次设计内容涉及了机械制造工艺及机床夹具设计、金属切削机床、公差配合与测量等多方面的知识。本设计是杠杆零件的加工工艺规程及一些工序的专用夹具设计。杠杆零件的主要加工表面是平面及孔。一般来说，保证平面的加工精度要比保证孔的加工精度容易。因此，本设计遵循先面后孔的原则。并将孔与平面的加工明确划分成粗加工和精加工阶段以保证孔的加工精度。基准的选择以杠杆外圆面作为粗基准，以孔及其下表面作为精基准。先将底面加工出来，然后作为定位基准，在以底面作为精基准加工孔。整个加工过程选用组合机床。在夹具方面选用专用夹具。考虑到零件的结构尺寸简单，夹紧方式多采用手动夹紧，夹紧简单，机构设计简单，且能满足设计要求。
关键词杠杆零件，加工工艺，夹具，定位，夹紧
ABSTRCT
This design content has involved the machine manufacture craft and the engine bed jig design, the metal-cutting machine tool, the common difference coordination and the survey and so on thevarious knowledge.This paper is to design the craft processes of making the lever spare parts and some specialized tongs in the process. The lever spare part primarily processes the surface and bores. Generally speaking, to guarantee the accuracy of the flat surface process is easier than that of the bore. Therefore, this design follows the principle that surface first and then the bore, and definitely divides the process of flat surface and bore into coarse processes and precise processes to guarantee the bore processes. The basic choice is to outside circle as rough basis and to bore and its next surface as precise basis. The bottom is first processed out to be fixed position basis, and process the bore using the bottom as the precise basis. Thewhole processes choose the machine bed. In the aspects of tongs choosing, specialized tongs are used. In consideration of the simple construction size of the spare parts, clipping by hands is adopted. It is simple, and the organization design is simple, and can satisfy the design request.
Key Words Lever spare parts, craft proces, tongs, fixed position, tight clip
目录
序言1
一零件的分析2
1.1零件的作用2
1.2零件的工艺分析2
二.毛坯的确定4
2.1确定毛坯的制造形式4
2.2毛坯形状及尺寸5
三拟定加工工艺路线7
3.1基准的选择7
3.1.2粗基准选择7
3.1.2精基准的选择8
3.2制定工艺路线9
四零件加工工序设计12
4.1工序1设计12
4.2工序2设计12
4.3工序3设计12
4.4工序4设计14
4.5工序5设计16
4.6工序6设计18
4.7工序7设计22
4.8工序8设计24
4.9工序9设计27
4.10工序10设计29
五夹具设计33
5.1问题的提出33
5.2定位基准的选择33
5.3工件定位的基本原理35
5.4常见定位方式及定位元件37
5.5切削力及夹紧力计算40
5.6定位误差分析43
5.7夹具设计及操作简要说明43
总结45
致谢47
参考文献48
杠杆零件图底面三维
杠杆拉大孔六边形夹具实体三维装配图
杠杆拉大孔六边形夹具消隐三维装配图
A4杠杆
A2装配图
A2夹具体
A4导向板
A4盖板
A4毛坯图
A4圆形支撑板
设计目录
设计字数统计
中英文摘要
