双头可调立式钻床设计【毕业论文+CAD图纸全套】.doc

摘 要 此次设计为可调立式双头钻床的机械设计。设计主要介绍了可调立式双头钻床的设计原理、调整方法及设计计算过程。通过预先给定的加工要求可确定所需的计算参数，进而依据可调立式双头钻床的设计原理来设计计算并校核各个部位的零件，然后进行组装。本次设计可从五大方面进行设计。通过预先给定的加工要求计算并进行了可调式双头钻头的设计、传动系统减速箱的设计、传动系统电机的选用、 X-Y工作台的设计、钻头轴向进给系统的设计共五部的设计。通过设计并组装后的钻床可以一次加工两孔，且两钻头间的距离可调，从而实现可以在一个工件上加工多对两两间距不同的孔。在人力和设备不增加的情况下使用可调立式双头钻床可以成倍提高钻床的加工效率，并可以保证较高的加工精度和孔间相对位置精度。 关键词：滚珠丝杠；电动机；变速箱；可调式双头钻头 ABSTRACT The machine design is to devise an adjustable vertical double-headed drilling machine. The design mainly introduced the design principle, adjusting and design calculation process for devise a adjustable vertical double-headed drilling machine. Through the processing requirements given in advance can determine the computation parameters, then based on the design principle, which is about adjustable vertical double-headed drilling machine, to design ,calculate and check each place parts, and then to assemble all the parts. The design can be devised from five aspects. Through the processing requirements given in advance，five parts of the design, the adjustable double transmission system, design of the reducer drive system for the motor selection, design of X-Y workbench, design of axial feeding system for drill bits, can be calculated and devised. Through design and assembly of the drilling machine, two holes can be formed after one processing, and the distance between the two holes can be adjusted. So as to realize processing some groups of holes with different space between two holes. Adjustable vertical two-headed drilling machine can multiply processing efficiency without increase human and equipment, and can guarantee a high machining accuracy and precision of the relative position between holes. Key words：Ball screw；motor；gearbox；Adjustable two-headed drill bit. 目 录 摘 要 I ABSTRACT II 1 前言 1 1.1 本课题的背景和研究意义 1 1.2 本课题解决的问题和设计时主要的工作 2 2 双头钻床结构设计的总体方案 4 2.1钻床总体结构 4 2.2设计方案选择 4 3 可调式双头钻头的设计 9 3.1 预选加工材料，加工直径 9 3.2 计算高速钢麻花钻轴向切削力及扭矩 10 3.2.1 计算单个钻头轴向切削力 10 3.2.2 计算单个钻头扭矩 10 3.3 钻头中各轴及齿轮的计算 12 3.3.1 齿