发动机支架立式单面组合钻床设计.doc

摘 要 本次设计的题目是发动机支架立式单面组合钻床设计，是在发动机支架上加工4个深6mm，尺寸要求17的孔。 本次设计分为总体设计和主轴箱设计两个部分。首先，对机床进行总体结构的设计三图一卡”即被加工零件工序图、加工示意图、机床尺寸联系总图以及Abstract The design topic is Engine bracket of vertical single combination drilling machine design. Aimed at the engine support processing 4 meet the size requirements of the 17 and 6mm deep hole. The design is divided into two parts overall design and the headstock design. Firstly, the overall structure of the machine tools design, need to determine the cutting parameters, calculation of cutting force, cutting torque, cutting power and tool life, and thus determine the main shaft, extended size, etc..Rendering the three plans for a card, that is, process map parts to be processed, processing diagram, machine sizes contact General Plan, and the productivity calculation card. Secondly, the design of the spindle box, drawing the original design basis, for the identification of various common spindle box and the selection of components, to calculate the transmission gear ratios and the principal axis coordinates. Finally, the results of the analysis, the gear and shaft to check the strength and stiffness. This special machine can meet the processing requirements to ensure the machining accuracy, tool smooth operation, reliable, simple, easy handling, easy maintenance and adjustment. Operation simple, reducing labor intensity and improve labor productivity. Key words：special purpose machine; drilling; spindle box; transmission design 第1章 绪论 1.1 组合机床综述 近年来，组装备向着组组组和组术发强数术应组床产数进发标块适应可调可变场专装备术的关键轴转进给该届览会轴转10000～20000 r/min，最高进给达2060m/min，复合、多功能、多轴装备断数减时状却杂轴装备适状杂的。 另外，产缩够随时调适应变满样产而更关键现术装备应术进现动进过络对进远对运转状况进监积关资过络对远设备进维检务等这国组装备还当国组术装备块可调可变术应将是后的发为工艺上决定组结工艺过毕业实习现场结点术点原则结合组工艺虑经术经济后拟订出进经济工艺结点工艺产工艺设计专用进机总术结在选工艺结础进总设计内零件图图联图产计1.2 组合机床总体设计 组总设计工艺订出工艺能设计专用个工艺选择工艺确定决定专用结运动传动列问题工艺设计专用环节组设计结为卧图1图12）两图卧组结图组结1.2.1 被加工零件的特点 本次设计的组对发动HT200，硬度是HB160～210。 1.2.2 工艺路线的确立 本工序加工的内容是加工路线中的第一道工序。孔的孔径为17mm，表面粗糙度为Ra=12.5μm。 为了保证其精度要求，将有精度要求的四个孔安排在同一台专机上进行。 1.2.3 机