定位支座数控加工夹具设计.doc

目录
摘要 I
ABSTRACT II
前言 1
1零件的用途 2
计算零件生产纲领确定零件的加工类型 2
研究分析被加共零件图和被加工零件的原始资料,审查改善零件的结构工艺性。 2
毛坯种类的选择 3
3
5
5
5
数控加工工艺的特点 5
6
8
8
工件的装夹 9
10
11
13
13
总结 15
致谢 16
参考文献 17
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摘要
本论文主要研究的是不规则零件在现代制造业中的广泛应用,那么保证此类零件的加工精度就显得尤为重要。本课题通过分析定位支座零件的结构特点和加工要求,用数控加工中心来达到多工位的加工目的,提高零件在大批量生产制造过程中的效率,同时制定了一套较为合理加工工艺规程,从而为保证该零件的加工精度将提供一种经济实用的夹具设备,具有一定的实用价值,在论文中会以研究零件的工艺规程开始着手设计最为适合的夹具,在不同的夹紧方案下进行比较,并且以平面加工为定位方法,通过夹紧力的计算和定位误差达到比较,选则最为恰当、最为合理的夹具设计方案,从而保证了被加工零件的精度以及工件在加工过程中定位的可靠和准确,夹具提供足够大的夹紧力以防止工件位移,工件在夹紧力的作用下形变小。从而使得夹具在装夹工件进行加工的过程中正真发挥其作用,提高劳动的生产效率、具备一定的实用价值。
关键字:夹具装夹,定位,加工精度,平面加工,多工位
ABSTRACT
This paper is a study of irregular parts in the modern manufacturing a wide range of applications, then ensure that such parts of the machining accuracy is particularly important. Positioning the subject by analyzing the structure of parts bearing the characteristics and processing requirements to achieve C Machining Center multi-purpose processing, high-volume production parts to improve manufacturing process efficiency, while more reasonable to develop a set of processing a point of order, so as to ensure that the machining accuracy will provide an economical and practical equipment of the fixture has a certain practical value, in the paper will be to study the parts of the process started to design a point of order most suitable for the fixture,
In parison under clamping and positioning with planar processing method for the calculation of clamping force and position error pare the election is the most appropriate and most reasonable design of the jig, thus ensuring the accuracy of parts processed and the workpiece during processing of reliable and accurate positioning, fixtures pr