设计描述：

文档包括:

Word说明书1份，共23页，约10000字

CAD版本图纸，共11张

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 工艺方案的制定 3
2.1.2 确定机床的配置模式 3
2.1.3 滑台型式的选择 3
2.1.4 定位方式的选择 3
2.2 组合机床切削用量的选择 4
2.2.1 切削用量的选择 4
2.2.2 切削功率，切削力以及转矩的选择 4
2.2.3 刀具的选择 5
2.3 组合机床总体设计—三图一卡 5
2.3.1 被加工零件工序图 5
2.3.2 加工示意图 5
2.3.3 机床尺寸联系总图 6
2.3.4 机床生产率计算卡 8
3机床的夹具设计 10
3.1 定位和夹紧的方案确定 10
3.2 定位元件和夹紧元件的设计计算 11
3.2.1 定位元件的确定 11
3.2.2 夹紧机构的确定 12
3.2.3 夹紧力的计算 12
3.3 误差分析计算 13
3.3.1 定位误差ΔD 13
3.3.2 对刀误差ΔT 13
3.3.3 夹具位置误差ΔA 14
3.3.4 夹具误差ΔE 14
3.3.5 加工方法误差ΔG 14
3.3.6 保证加工精度 15
3.4 夹具体的确定 16
4 结论 17
参考文献 18
致谢 19
附录 20

 
“Y”形支架双面钻机床总体设计和夹具设计
摘要：“Y”形支架双面钻机床用于加工支架的钻削组合机床。主要钻削加工支架相互垂直的两个面上的18-φ17和8-φ17孔。由于该零件形状独特，因此对工件的定位和夹紧比较困难。本设计是在完成组合机床总体设计的基础上，完成工件夹具的设计。首先针对被加工零件的特点，查阅了大量相关的资料，然后进行了组合机床的总体设计，绘制了被加工零件的工序图、加工示意图、机床联系尺寸图和生产率计算卡。在此基础上，进行了夹具的设计，确定了定位及夹紧方案，绘制了夹具装配图及其零件图，进行了夹具夹紧力的计算及误差分析。该机床大量采用通用件，降低了制造成本，且运转平稳，工作可靠，结构简单，装卸方便，便于维修和调整，能满足加工要求，保证加工精度。其优点是加工和装配工艺性好，无漏油现象；同时，安装、调试与运输也都比较方便；而且，机床重心较低，有利于减小振动。其缺点是削弱了床身的刚性，占地面积大。

关键词：主轴箱；组合机床；夹具

The overall and jig for the bracket of Design of Two-side Drilling machine
Abstract: The two-side drilling modular machine manufactures the bracket mainly. The machine makes 26 holes with dills and the drilled diameter is 17mm. The shape of workpiece is particular, so orientation and fixation is difficult. The task is the overall and jig for the bracket of design of two-side drilling machine, in a sufficient analysis of the characteristics of the workpiece , and readed a lot of books, and then I begins to work. The assembly diagram of the headstock was drawn. The drawing of the part’s processes, the schematic diagram of machining, the relationship of the machine size and the card of the productivity were drawn. The transmission routes were confirmed and so on. The parts drawing and assembly diagram of the headstock and jig were drawn also, checked the shaft and gear and other parts of the strength. There are a lot of common pars in the modular machine tool, so the costs is cheap and operates smoothly, works reliably, configuration is simple, installation and teardown is convenient, maintenance and adjustment is easy. The machine meets the requirements and ensures the accuracy. The advantage of processing and assembly process is good, no leakage; At the same time, installation, commissioning and transport are also more convenient; Moreover, a lower center of gravity machine will help reduce the vibration. The drawback is to weaken the rigidity of the bed, covers an area of great.

Keywords：Modular machine tool; Headstock; Jig.