ZJ4110台钻箱体攻螺纹组合机床总体及夹具体设计
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密 惠 保
1 前言 1
2 组合机床总体设计 3
2.1组合机床总体方案论证 3
3 总体设计计算 5
3.1 丝锥的切削负荷 5
3.2 攻螺纹扭矩的计算 5
3.3 主轴直径的确定 5
3.4 切削速度的确定 6
3.5 切削功率的确定 6
3.6 攻螺纹主转速的计算 7
3.7 确定主轴箱轮廓尺寸 7
3.8 生产率计算 8
3.9 通用部件的选择 9
4 夹具设计 12
4.1 夹具设计的基本要求和步骤 12
4.2 定位方案的确定 13
4.3 夹紧方案的确定 16
4.4 夹具体的设计 20
5 结论 22
参考文献 23
致 谢 24
附 录 25
ZJ4110台钻箱体攻螺纹组合机床总体及夹具设计
摘要：组合机床是以通用部件为基础，配以按工件特定形状和加工工艺设计的专用部件和夹具，组成的半自动或自动专用机床。
本课题所设计的组合机床是用于ZJ4110台钻箱体两面同时攻螺纹,提高了生产效率, 降低加工成本。设计的内容包括总体设计和夹具设计。该组合机床用于加工ZJ4110台钻箱体左面5个M5的孔，右面4个M5的孔，一次装夹同时加工。总体设计包括机床配置型式的确定、结构方案的选择以及“三图一卡”的绘制。该机床设计采用卧式单工位两面同时攻螺纹的方案，加工和装配的工艺性好,零件装夹方便。在夹具设计过程中，采用左面、下面、上面三面定位, 左面用定位销定位，下面用两个定位条定位。上面用气压缸夹紧,在压板上采用一导向杆引导夹紧，使夹紧平稳可靠。本组合机床有结构简单、操作方便、加工精度高、工人劳动强度低及有利于提高加工生产率等优点。
关键词：组合机床； 攻螺纹； 夹具； 定位
The General and Jig Design of The Modular Machine Tool for tapping in the Box of ZJ4110
Abstract: The modular machine tool is a semi-automatic or a automatic machine tool, which is based on the general parts and composed of special parts and jig,which is designed by special shape and machine process of the work piece which need to be manufactured.
The modular machine tool is designed to tap on two sides of the box of the bench drilling machines tapping at the same time, in order to improve the disposition and the production efficiency.The focal point of this topic is the overall design and the jig design.The modular machine tool is used to tap five holes of M5 on the top , and four holes of M5 on the right. The overall design includes the definition of the modular machine tool, the selectioning of the structure plan and “three drawing and one card” which the mean is the completion of the technological drawing of the part which need to be manufactured,the general drawing of modular machine tool, drawing of cutter display and the efficiency card of manufacture.The modular machine tool uses the horizontal-type single location two-side processing plan, the processing and assembly technology capability is good, and it clamps conveniently. In the design process of jig, the work piece has been located by three surfaces – leftside ,bottonside and upside. A pin has been used on the left and two orientation bars have been used on the underside. Air-pressure vat is used to clamp the top and the right side.On the compress plate,a guide rod is used to guide clamping, in order to make it clamping smooth and reliable.This modular machine tool has many advantages:simple structure,ease operation,high processing precision, low worker labor intensity, high production efficiency and so on. [资料来源：http://www.THINK58.com]
Key words: Modular machine tool tapping Jig Location