盐城工学院本科生毕业设计说明书 2009目 录1前言11.1概述21.2课题设计的总体思路22组合机床总体设计32.1总体方案论证32.1.1被加工零件的特点 32.1.2工艺路线的确立32.1.3机床配置形式的选择32.1.4定位基准的选择42.1.5选用滑台传动型式42.2设计计算52.2.1切削用量的计算52.2.2切削扭矩和切削功率的计算 62.2.3主轴直径的确定 72.2.4确定多轴箱轮廓尺寸82.2.5生产率的计算92.2.6通用部件的选择122.2.7零部件的设计133夹具设计143.1夹具设计的基本要求和步骤 143.1.1夹具设计的基本要求143.1.2夹具设计的步骤143.2定位方案的确定153.2.1零件的工艺性分析153.2.2定位方案的论证153.2.3误差分析163.2.4保证加工精度173.2.5导向装置183.3夹紧方案的确定193.3.1夹紧装置的确定193.3.2夹紧力的确定203.3.3气缸的选择213.3.4气压回路的设计223.4夹具体的设计234结论24致谢25参考文献26附录27包缝机机座孔钻孔组合机床总体及夹具设计摘要：组合机床是根据加工需要，以大量通用部件为基础，配以少量的专用部件组成的一种高效专用机床。此次毕业设计就是要设计一台包缝机机座孔钻孔机床，进行左右两面钻孔总体设计及夹具设计。首先进行方案论证，初步决定了多轴箱的传动方案，主要采用齿轮传动。利用中间轴来传递运动，从而实现轴与轴之间功率和转矩的传递。其次，根据分析结果，计算各主轴在切削加工时的转速、切削用量、切削力、切削功率、转切削矩。从而确定所选电动机的功率，并对齿轮和轴进行强度和刚度的校核。最后对机床进行总体结构的设计，包括“三图一卡”, 即被加工零件工序图、加工示意图、机床尺寸联系总图，以及零件之间的位置关系和相互的配合关系，由于在钻孔加工过程中容易产生引偏现象，为防止引偏，故在大批量生产中，通常采用夹具钻模，用夹具夹持零件，用钻模板上的钻套为钻头导向，避免钻头切入时发生的引偏。由于钻孔操作简单，适应性强，所以广泛用于对质量要求不高的孔的终加工，适合成批生产。关键词：组合机床；钻孔；夹具。全套图纸，加153893706Package machine hole drilling machine tools overall portfolio and Fixture DesignAbstract：Modular machine tool is a high-efficiency tool which is based on its processing needs, made up of a large number of generic parts, and supported by a small number of dedicated components. The graduation project is to design a machine bag sewing machine hole drilling machine for drilling on both sides about the overall design and fixture design.Firstly, thing is demonstration, determines to adopt the drive scheme of multi-spindle casings, which makes the transmission by the gears. Use the intermediate shaft to pass campaign, to achieve power and torque transmit between the spindles. Secondly, According to the analytic of the results, calculations will be made about the speed, strength, power and cutting matrix of spindle when cutting, then the motor power will be determined, and checking the intensity and rigidity of gear and spindle. Finally, the design of the overall structure of the machine tool is to be made, including “Three drawings and one card”, that is part machining procedure drawing, machining sketch drawing, machine tool size relation drawing as well as the location and mutual fitness of parts. With a view to potential deflection during the drilling process, model drill will be applied in the mass production. Drill sleeves in the model drill being oriented, deflection will be avoided while the drill cuts in. For the briefness and wide adaptability of drilling, It widely be used in low demanding on the quality of the final hole processing, and suitable for mass production.Key words：modular machine tool ；drilling； fixture.1 前言1.1 概述本组合机床是一台包缝机机座孔钻孔的组合机床，该机床可适用于一定批量的生产。课题来源于盐城市机械化研究所，是针对该包缝机而设计的，以提高其的生产效率、加工精度，从而降低加工成本。国内主要组合机床厂对主机的质量普遍比较重视,但由于与主机配套的液压件，稳定性受到了严重的影响。许多厂存在着刀具和辅助设计制造能力差的问题。目前, 国内组合机床通用部件由于多家引进了不同国别的技术, 标准还没有统一, 行业归口部门要