摘要目前，机械加工制造业对于产品的生产率和精度等级的要求越来越高，单工位单主轴的普通机床已经不能满足工业发展的需要。因此，发展具有可调、快调、装配灵活、适应多品种加工特点的组合机床十分迫切。组合机床具有产品质量稳定，生产效率高，技术经济效果显著等优势特点。本课题是针对柴油机气缸盖三面钻孔工序进行组合钻床的设计。柴油机气缸盖的生产通常是中批量的生产，而且对孔径的精度等级要求比较高。因此采用组合机床进行加工比较合理。组合钻床三面同时钻本工序所需加工左右后三面的共7个孔，不仅大大缩短工序时间，而且减少了定位、装夹等带来的误差，提高了零件的加工精度等级。本课题主要完成的任务是机床的总体设计以及右主轴箱的设计，绘制了加工工序图、加工示意图、机床尺寸联系图等，并对机床总体和右主轴箱进行了相应的建模，形象清楚的展示设计结果。50062

毕业论文关键词：组合钻床、尺寸联系图、多轴箱、传动系统

Abstract Currently, mechanical processing and manufacturing for the product of the productivity and accuracy of the level of demand is higher and higher, the simplex bit single spindle lathes have already can't satisfy the needs of industrial development. Therefore, development of adjustable, fast, flexible assembly, to adapt to many kinds of processing characteristics of modular machine tool is very urgent. Combination machine tools has the stable product quality, production efficiency is high, the edge features such as technical and economic effect is remarkable. This topic is in view of the diesel engine cylinder cover three combination drilling machine drilling process design. Diesel engine cylinder head production are usually in the bulk production, and on the aperture of the accuracy level required is quite high. So the combination machine tools for processing is quite reasonable. Combination drilling machine with three sides drill at the same time the processing required for this process about three surface after a total of seven holes, not only greatly shorten the process time, and to reduce the positioning and clamping error, improves the machining accuracy of parts. This topic mainly task is the overall design of a machine tool and the design of the spindle box, right to draw the machining process diagram, schematic diagram, the size of the machine tool connection diagram, etc., and overall and right to machine tool spindle box for the corresponding modeling, image clearly display design results.

Keywords: combination drilling machine, size chart, spindle box, the transmission system.

目录

第一章     绪论 1

第二章     组合机床总体设计 5

2.1 总体方案论证 5

2.1.1  加工零件的工艺性分析 5

2.1.2  组合机床配置型式的选择 6

2.1.3  零件定位基准的确定 7

2.2 确定切削用量及刀具的选择 8

2.2.1  切削用量的选择 8

2.2.2  刀具耐用度的验证 9

2.2.3  选择刀具结构 12

2.3 组合机床总体设计—“三图一卡” 12

2.3.1  被加工零件工序图 13

2.3.2  零件的 加工示意图 14

2.3.3  机床的联系尺寸图