185曲轴铣端面打中心孔组合机床和专用夹具机械CAD图纸设计.doc

重庆大学本科学生毕业设计（论文） 185曲轴铣端面打中心孔组合机床和专用夹具设计 学 生： 学 号： 指导教师： 专 业：机械设计制造及其自动化 重庆大学机械工程学院 二O一三年六月 Graduation Design (Thesis) of Chongqing University Design of Modular Machine tool and Special Fixture for 185 Crankshaft Milling End-face and Drilling Centre Hole Undergraduate: Supervisor: Major: Mechanical Design and Manufacture of Automation College of Mechanical Engineering Chongqing University June 2013  摘要 本次毕业设计主要任务是为曲轴零件铣端面打中心孔设计专用夹具和组合机床。具体包括编制曲轴零件的加工工艺规程、专用组合机床的总体设计和专用夹具设计。 曲轴的加工工艺规程主要研究内容有确定零件的生产类型，对曲轴零件进行工艺分析，毛坯的确定，工艺路线的拟定，及工序的加工余量，计算工序尺寸及公差和确定切削用量及时间定额。 本次设计的组合机床选用的是配置形式是卧式双面组合机床，最终结果是绘制机床联系尺寸图。主要是对动力部件、支撑部件、输送部件和辅助部件的选择。具体涉及到的内容如下：绘制零件的加工示意图和加工工序图，机床的配料高度的确定，夹具外形轮廓的确定，侧底座、中间底座尺寸的确定，主轴箱外形尺寸的确定。 本工序的专用夹具用两个V形块和一个定位销来定位，限制5个自由度。夹紧机构选用移动压板式夹紧机构。要求夹具稳定可靠、拆卸方便。采用硬质合金端铣刀铣曲端面，并且铣刀通过两个直角对刀块进行对刀。钻中心孔采用中心钻。 关键词：组合机床设计、夹具设计、工艺规程、联系尺寸图 ABSTRACT The main task of the graduate design is Design of Modular Machine tool and Special Fixture for 185 Crankshaft Milling End-face and Drilling Centre Hole. It mainly contains compiling the processing technic specification of the crankshaft, modular machine tool design and special fixture design. The main research contents of the processing technic specification of the crankshaft is determining the production type of the part, analyzing the processing technic of the crankshaft, determining the rough part, studying out the process route, calculating the machining allowance and process dimension and tolerance, at last, determining the cutting dosages and time fixed. The configuration form of the modular machine tool is horizontal double-sized machine tool. At last, drawing a machine tool contact dimension drawing. Mainly choosing the dynamic components, supporting parts, transmission parts and auxiliary parts. The concrete content includes: drawing the processing schematic diagram and processing procedure chart. Determining the height of the machine ingredients. Determining the contour of