车外圆夹具装配图
摘要
本次设计是对制动器杠杆零件的加工工艺规程和一些工序的专用夹具的设计，制动器杠杆零件的主要加工表面的铣键槽，本设计主要是通过设计车外圆面的夹具保证外圆面的同轴度。由加工工艺原则可知，保证平面的加工精度比保证孔的加工精度容易很多。所以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为粗加工和精加工阶段以保证加工精度。基准选择以大外圆端面作为粗基准，以制动器大外圆端面和两个工艺孔作为精基准。主要加工工序安排是先以加工制动器大外圆端面互为基准加工出端面，再以端面定位为基准加工出工艺孔。在后续工序中，除个别工序外均用端面和工艺孔定位加工其他孔和平面。整个加工过程均选用组合机床及加工中心。
Abstract
This design is to design the special fixture for the processing procedure and some procedures of brake lever parts. The milling keyway for the main processing surface of brake lever parts is mainly to ensure the concentricity of the outer circle surface by designing the fixture for the outer circle surface of thevehicle.It can be seen from the principle of processing technology that it is much easier to guarantee the machining accuracy of plane than that of hole.Therefore, the design follows the principle of first face and then hole, and the processing of holes and planes is clearly divided into roughing and finishing stages to ensure the machining accuracy.The datum chooses the large outer circle end as the rough datum and the brake large outer circle end and two process holes as the precise datum.The main processing procedure arrangement is to process the end face on the basis of processing each other's large outer circle end face of the brake, and then to process the process hole on the basis of end position.In the following procedure, other holes and planes are machined by end face and process hole positioning except for individual procedurebination machine tools and machining centers are used in thewhole machining process.
目录
摘要II
Abstract III
第一章生产目的1
第二章零件的分析1
第三章工艺规程的设计2
3.1、确定毛坯的的制造形式2
3.2、基面的选择2
3.3、选择加工方法2
3.4制订工艺路线2
工艺路线方案一： 2
3.5、机械加工余量、工序尺寸及毛坯尺寸的确定4
3.7工艺规程确切削用量5
第四章制动器杠杆车外圆夹具设计10
4.1车床夹具设计要求说明10
4.2车床夹具的设计要点10
4.3定位机构11
4.4夹紧机构12
5.4切削力及夹紧力的计算12
4.5零件的车床夹具的加工误差分析13
4.6确定夹具体结构尺寸和总体结构15
4.6零件的车床专用夹具简单使用说明16
总结17
参考文献18
制动器杠杆零件图
制动器杠杆毛坯
加工过程卡
夹具设计部分
夹具体
平头手柄
设计所包含文件
说明书前三页
字数统计
工序卡
