设计简介
摘 要
本篇设计是十字头体加工工艺规程及铣两侧面夹具设计。十字头体零件的主要加工表面是外轮廊表面及孔。一般来说，保证平面的加工精度与保证孔系的加工精度相比，保证平面的加工精度比较容易。侧面加工都是选用专用铣面夹具，夹紧方式一般选用手动夹紧，夹紧可靠。因此生产效率较高。能够满足设计要求。
文章的重点在于对十字头体的工艺性和力学性能分析，对加工工艺进行合理分析，选择确定合理的毛坯、加工方式、高效设计、省力的夹具，经过实践证明，最终加工出合格的十字头体零件。
关键词：工艺编制，加工时间，专用夹具，生产率
Abstract
The crosshead body is an important part of the compressor, is connected to the piston and connecting rod parts, has a guiding role; Size is larger, carrying a large pressure. Is to convert rotary motion to reciprocating motion of the joints. The design of the processing technology of the air compressor parts crosshead body discipline, optimized design of the technology, technological characteristic analysis of parts at the same time, the machining allowance, planetary computing processing precision, processing time, the key is to make sure the crosshead body strength and rigidity performance, ease of installation, adjustment and maintenance.
The crosshead body is made of cast iron casting forming, generally after machining to its processing to use requirement, in the process of production, the processing technology of the crosshead body custom is very important, process of determines the accuracy of the parts and the production efficiency, especially in the mass production parts, the technical process to production into consideration. At the same time, in order to ensure the workpiece machining accuracy, and in order to improve the productivity and special fixture design of each process, is the operator to use simple, rapid and accurate, and on the premise of guarantee accuracy greatly improved productivity.
Key words: machining process, machining time, special fixture, productivity
本篇设计是十字头体加工工艺规程及铣两侧面夹具设计。十字头体零件的主要加工表面是外轮廊表面及孔。一般来说，保证平面的加工精度与保证孔系的加工精度相比，保证平面的加工精度比较容易。侧面加工都是选用专用铣面夹具，夹紧方式一般选用手动夹紧，夹紧可靠。因此生产效率较高。能够满足设计要求。
文章的重点在于对十字头体的工艺性和力学性能分析，对加工工艺进行合理分析，选择确定合理的毛坯、加工方式、高效设计、省力的夹具，经过实践证明，最终加工出合格的十字头体零件。
关键词：工艺编制，加工时间，专用夹具，生产率
Abstract
The crosshead body is an important part of the compressor, is connected to the piston and connecting rod parts, has a guiding role; Size is larger, carrying a large pressure. Is to convert rotary motion to reciprocating motion of the joints. The design of the processing technology of the air compressor parts crosshead body discipline, optimized design of the technology, technological characteristic analysis of parts at the same time, the machining allowance, planetary computing processing precision, processing time, the key is to make sure the crosshead body strength and rigidity performance, ease of installation, adjustment and maintenance.
The crosshead body is made of cast iron casting forming, generally after machining to its processing to use requirement, in the process of production, the processing technology of the crosshead body custom is very important, process of determines the accuracy of the parts and the production efficiency, especially in the mass production parts, the technical process to production into consideration. At the same time, in order to ensure the workpiece machining accuracy, and in order to improve the productivity and special fixture design of each process, is the operator to use simple, rapid and accurate, and on the premise of guarantee accuracy greatly improved productivity.
Key words: machining process, machining time, special fixture, productivity
目 录
第一章 加工工艺规程设计 1
1.1 零件的分析 1
1.1.1 零件的作用 1
1.2 十字头体加工的问题和工艺过程设计所应采取的相应措施 2
1.2.1 孔和平面的加工顺序 2
1.2.2 孔系加工方案选择 2
1.3 十字头体加工定位基准的选择 2
1.3.1 粗基准的选择 2
1.3.2 精基准的选择 3
1.4 十字头体加工主要工序安排 3
1.5 机械加工余量、工序尺寸及毛坯尺寸的确定 5
1.6确定切削用量及基本工时（机动时间） 5
第2章 铣
夹具的设计 222.1 问题的指出 22
2.2 定位机构 22
2.2.1定位方式计算及选择 22
2.2.2切削夹紧力的计算 22
2.3定位误差分析 24
2.4 零、部件的设计与选用 24
2.4.1定位销选用 24
2.4.2夹紧装置的选用 25
2.5 夹具设计及操作的简要说明 27
结 论 28
参考文献 29
致 谢 30
