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开题报告一个

CAD版本图纸，共24张

半精镗精镗气缸盖导管孔组合机床夹具设计
摘 要：为了提高生产效率，满足被加工零件的精度要求，需要设计一台组合机床来改善它的加工情况。本课题设计的是半精镗精镗气缸盖导管孔组合机床。其来源于江苏高精机电装备有限公司。在设计中,通过研究被加工零件的特点，对相关数据进行计算，对相关部件进行选择，从而确定机床的总体布局。并绘制出被加工零件工序图，加工示意图，机床联系尺寸图和生产率计算卡。在此基础上拟定了夹具的结构方案，确定工件的定位方式，然后进行误差分析，确定夹紧方式，对夹紧力进行计算，对夹具的主要零件进行结构设计，并绘制出夹具图和主要零件图。该机床对零件加工和装配的工艺性好，工件装夹方便。采用液压滑台实现刀具进给，工件采用一面两孔定位，一次装夹完成，不仅保证了孔的加工精度，而且还提高了加工效率，降低了工人的劳动强度。
关键词：组合机床；半精镗；精镗；夹具。

Design of Modular Machine Tool and jig for Semi-finished and Finished Holes in pipe of covering Cylinder

Abstract: In order to improve production efficiency and to meet the precision requirements of machining parts, a modular machine is needed to be designed to improve its processing condition. This design concentrates on this topic is designed to semi-fine boring fine boring holes cylinder head catheter combination machine, which is provided by the High-precision Mechanical and Electrical Equipment Limited of Jiangsu. In the design, we studied the characteristics of processed parts, calculated the relevant data, selected the relevant parts, and then confirmed the overall layout of machine tools. In addition to this, we work out procedure chart of processed components, processing schematic, Engine bed relation dimensional and productivity calculation card. Based on this, we have also developed the fixture structure, determined the location means of the work piece, and then analyzed the error, determined the clamping ways, calculated the clamping force. In the process, the structures of major parts are designed, and the assembly pictures as well as related part pictures are drawn. The machine performed well in processing and assembling process; and the work piece can be easily clamped. Hydraulic slip is adopted to feed  of tools pass in way of achieving the work piece by a two-positioning, clamping at one time, which can not only guarantee the accuracy of processing, but also improve the processing efficiency  , and also reduce the labor intensity of the workers .
Key word: Combination Machine, Fixture, Semi-fine boring, Fine Boring
目录
1 前言 …………………………………………………………………………1
2 组合机床总体设计………………………………………………………….. 3
2.1 总体方案论证 ……………………………………………………………3
2.1.1 加工对象工艺性的分析…………………………………………………… 3
2.1.2 机床配置型式的选择 ………………………………………………….3
2.1.3 定位基准的选择 ……………………………………………………………4
2.2 确定切削用量及选择刀具 ……………………………………………….4
2.2.1 选择切削用量 ………………………………………………………………..4
2.2.2 计算切削力、切削扭矩及切削功率 ………………………………………….6
2.2.3刀具耐用度的计算 ………………………………………………………….10
2.2.4 选择刀具结构 …………………………………………………………………..10
2.3三图一卡设计 ……………………………………………………………………10
2.3.1 被加工零件工序图 ……………………………………………………………….10
2.3.2 加工示意图 ………………………………………………………………………11
2.3.3 机床联系尺寸图 ………………………………………………………………12
2.3.4.机床生产率计算卡 …………………………………………………………….14
3 夹具设计 …………………………………………………………………………17
3.1 概述 …………………………………………………………………….17
3.1.1 机床夹具在机械加工中的作用 …………………………………………..17
3.1.2 机床夹具的分类 …………………………………………………..18
3.1.3机床夹具的组成 …………………………………………………18
3．2 夹具的设计步骤及内容 ……………………………………….18
3.2.1 气缸盖镗孔的工艺分析 ………………………………………………18
3.2.2夹紧方案的分析 …………………………………………………………19
3.2.3夹紧力的确定与计算 ……………………………………………20
3.2.4夹紧液压缸的选择 ……………………………………………….21
3.2.5定位元件的设计 …………………………………………………….21
3.2.6定位误差的计算 ……………………………………………………………….22
3.2.7导向装置的选择 ……………………………………………………………..23
3.2.8夹具体的设计 ………………………………………………………………..24
3.2.9其它元件的设计 ……………………………………………………….24
3.2.10夹具的精度分析 ……………………………………………………24
4  齿轮和轴的设计 …………………………………………………..27
4.1.齿轮设计 …………………………………………………………27
4.2.轴的设计 ……………………………………………………..29
5 结论 ……………………………………………………….34
参考文献 ………………………………………………….35
致  谢 ………………………………………………………………36
附 录 ........................................37