卧式车床尾座结构设计

摘要

本课题研究的主要目的是设计出与C6611卧式车床相匹配的尾座结构。

为了完成本课题的设计，首先是搜集和分析资料。主要包括国内外对卧式车床尾座结构的研究现状；同等卧式车床尾座的图纸和资料以及进给与夹紧系统的基本资料；其次是初步确定尾座的总体布局。包括进给系统与夹紧机构的布置及合理选用该结构应用的标准件。最后主要是关于尾座相关方面的设计计算及技术要求。

目前，传统的卧式车床尾座中没有变速机构。当钻削大直径孔时，由于切削力过大，操作工人通常采用加长力臂的方法来扳动手轮。而且耗时又耗力，还会增加企业成本。因此，本课题研究所要达到的预期效果是在C6611车床加工过程中，当需要使用尾座时，可以降低工人的劳动强度，降低企业成本，提高生产效率。

关键词：卧式车床；尾座；进给机构；夹紧机构;齿轮变速箱

ABSTRACT

The main purpose of this research is to design the general purpose centre lathes tailstock matching the C6611.

To complete the design of this project, before the first is to collect and analyze data, including domestic and international research about the tailstock;the blueprint and data of the same lathe tailstock and the basic information of the feed mechanisms and clamp mechanisms;Secondly,make sure the overall layout of the tailstock initially, including the layout of feed system and the clamping mechanism and the rational use of standard parts of the structure. Finally, the main aspect is the related design calculations about tailstock and technical requirements.

Currently,there is no gear box in the traditional general purpose centre lathes . When drilling large diameter holes, because the cutting force is too large, the workers flip the hand wheel with extending the moment of force.And it not only consume times and labor but also increase business costs. Therefore,the expected results of studying this subject is when needing the tailstock in the working process, it can reduce labor intensity and business costs ,increase productivity.

key word: general purpose centre lathes; tailstock; feed system; clamping mechanism; gear box

目录

摘要.................................................................................................... .I ABSTRACT................................................................................................ I 1前言. (4)

1.1选题目的和义 (4)

1.2当今机床的技术发展趋势 (4)

1.4设计的主要研究内容 (4)

2尾座部分的设计 (6)

2.1总体布局 (6)

2.2尾座体的设计 (7)

2.3尾座顶尖的设计 (7)

2.4支撑件的设计 (8)

2.5套筒移动的进给机构 (9)

2.6导轨设计 (9)

2.7操纵机构设计 (8)

2.8尾座的结构工艺性 (10)

2.9尾架的变速设计 (11)

2.10套筒加紧机构的设计 (12)

2.11装配结构的工艺性 (12)

3尾座相关的设计计算与强度校核 (13)

3.1挠度的计算 (13)

3.2转角的计算 (14)

3.3钻削力的计算与功率 (14)

3.4主要零件强度校核 (15)

3.4.1键的强度校核 (15)

3.4.2齿根弯曲疲劳强度计算 (16)

3.4.3齿面接触疲劳强度算 (17)

3.4.4压板处螺栓直径的校核 (17)

3.5蜗杆传动效率计算........................................................... (18)

4尾座精度的设计 (19)

4.2尾座与机床形位公差的确定 (19)

4.3底面及立导向面形位公差的确定 (19)

5结论 (20)

参考文献 (21)

致谢 (22)