文档介绍：充值下载即送 CAD 图纸, QQ 36396305 摘要本设计分析研究了 CA6140 车床变速箱中拔叉零件的夹具设计。由于拔叉零件的工序较多且结构较为复杂,所以为了保证加工精度和提高生产效率,考虑采用数控机床进行加工,以下内容进行了拨叉零件工艺性分析、加工顺序和工艺方案的确定,并通过对拨叉零件数控加工工艺规程设计和钻孔工序的夹具设计,为拨叉零件在数控机床上加工提供了理论依据和有力的硬件保证。关键词:数控加工工艺,定位,夹紧,专用夹具充值下载即送 CAD 图纸, QQ 36396305 Abstract The design of the gearbox on the lathe is in CA640 parts fork and drill a point of order processing Φ20, Φ50 hole of this special fixture design process. Fork parts asa result of the plex the structure, processes more; therefore in order to ensure the accuracy of processing to increase productivity and reduce labor intensity, consider the use C machine tools for processing and preparation of C machining process. In order to ensure Φ20, Φ50 hole on the vertical datum tolerance, CNC machine tools to meet the processing requirements on their design ofa special fixture, the fixture using automatic clamping device, clamping a reliable, easy to operate. Higher production efficiency, therefore, applicable to high-volume, the processing pipeline. Able to meet the design requirements. Keywords: NC machining process, positioning, clamping, special fixture 充值下载即送 CAD 图纸, QQ 36396305 目录摘要................................................................................................................................ 1 Abstract .......................................................................................................................... 2 目录............................................................................................................................ 3 1绪论............................................................................................................................ 5 2数控加工工艺概述.................................................................................................... 5 数控加工工艺分析的一般步骤与方法............................................................. 5 机床的合理选用................................................................................................. 5 数控加工零件工艺性分析.........