文档介绍：组合件数控车工艺与编程
 
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武威职业学院工程技术系
摘要
在车床上,利用工件的旋转运动和刀具的直线运动或曲线运动来改变毛坯的形状和尺寸,把它加工成符合图纸的要求。
车削加工是在车床上利用工件相对于刀具旋转对工件进行切削加工的方法。车削加工的切削能主要由工件而不是刀具提供。车削是最基本、最常见的切削加工方法,在生产中占有十分重要的地位。车削适于加工回转表面,大部分具有回转表面的工件都可以用车削方法加工,如内外圆柱面、内外圆锥面、端面、沟槽、螺纹和回转成形面等,所用刀具主要是车刀。
在各类金属切削机床中,车床是应用最广泛的一类,约占机床总数的50%。车床既可用车刀对工件进行车削加工,又可用钻头、铰刀、丝锥和滚花刀进行钻孔、铰孔、攻螺纹和滚花等操作。按工艺特点、布局形式和结构特性等的不同,车床可以分为卧式车床、落地车床、立式车床、转塔车床以及仿形车床等,其中大部分为卧式车床。
数控车削加工是现代制造技术的典型代表,在制造业的各个领域如航天、汽车、模具、精密机械、家用电器等各个行业有着日益广泛的应用,已成为这些行业不可或缺的加工手段。
为了子数控机床上加工出合格的零件,首先需根据零件图纸的精度和计算要求等,分析确定零件的工艺过程、工艺参数等内容,用规定的数控编程代码和格式编制出合适的数控加工程序。编程必须注意具体的数控系统或机床,应该严格按机床编程手册中的规定进行程序编制。但从数控加工内容的本质上讲,各数控系统的各项指令都是应实际加工工艺要求而设定的。
关键词: 车削加工刀具工艺参数程序
Abstract
In the lathe, the use of the workpiece and the tool rotation curve of linear motion or motion to change the rough shape and size, processing it into line with the requirements of the drawings.
Turning the workpiece in a lathe using tool rotation relative to the workpiece cutting method. Turning to the main cutting tool by the workpiece and not available. Turning is the most basic, the mon method of cutting in production occupies a very important position. Turning for processing rotary surface, most of the surface of the workpiece with a rotating turning method of processing can be used, such as the external cylindrical surface, internal and external conical surface, face, groove, thread and turn shaped surface so the tool is mainly used for turning tools.
In all types of metal cutting machine tools, the lathe is the most widely used category, accounting for 50% of the total number of machine tools. Lathe tool can car turning the workpiece, and can drill bits, reamers, taps and knurling tool drilling, reaming, tapping and knurling such an operation. According to the technical characteristics of form and structure of the layout of the different characteristics, horizontal lathe, most of them.
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