典型配合零件的车削加工.doc

题 目 【摘要】 本论文主要阐述了典型配合零件的车削加工，包括了零件的工艺分析、刀具选择、毛坯确定、装夹方式、夹具选择、加工步骤、程序编制以及废品分析。 该零件加工外圆和内径均采用了复合循环G71、螺纹复合循环G76，而且分了粗精加工，以提高零件的表面质量。还有最经典的椭圆宏程序。加工椭圆时考虑到刀具的选择时，决定采用外螺纹刀加工椭圆，避免了刀具负偏角过大造成的刀具与工件发生摩檫。零件过小，考虑到工件的装夹牢固，必要时要采用一夹一顶的方式。根据实际情况和现有条件选择机床为重庆第二机床厂生产的华中数控系统C2-6136HK/1，工作范围Ф360×750。 【关键词】椭圆；数控加工工艺；工艺分析；夹具 　 [Abstract] The present paper mainly elaborated the model coordination components turning processing, including the components craft analysis, the cutting tool choice, the semifinished materials had determined, the attire clamps the way, the jig choice, the processing step, the programming as well as the waste product analysis. This components processing outer annulus and the inside diameter have used composite cycle G71, thread composite cycle G76, moreover has divided the thick precision work, enhances the components the surface quality.Also has the most classical ellipse great procedure.When processing ellipse considered when cutting tool choice, decided uses the external screw thread knife processing ellipse, has avoided the cutting tool and the work piece which the cutting tool zinc bias angle oversized creates occurs touches cha.The components excessively are small, considered the work piece the attire clamps reliably, when necessity as soon as must use clamps a way.According to actual situation and existing condition choice engine bed for Chongqing second machine tool factory production Central China numerical control system C2-6136HK/1, operating region ф360×750. [Key words] Ellipse; Numerical control processing craft; Craft analysis; Jig 目 录 1 工艺分析……………………………………………………………..3 1.1 刀具材料的选择…………………………………………………………….6 1.1.1 选择原则…………………………………………………………………..6 1.1.2 刀具材料分析……………………………………………………………..6 1.2 定义毛坯……………………………………………………………………...7 1.2.1 常见毛坯………………………………………………………………….7 1.2.2 毛坯的确定……………………………………………………………….8 1.3 选择夹具……………………………………………………………………...8 1.3.1 夹具的选择……………………………………………………………….8 1.3.2 常见的装夹方式………………………………………………………….8 1.3.3 夹具的确定……………………………………………