三维零件图
摘要
零件的数控加工工艺分析是编制数控程序中最重要而又极其复杂的环节，也是数控加工工艺方案设计的核心工作，必须在数控加工方案制定前完成。一个合格的编程人员对数控机床及其控制系统的功能及特点，以及影响数控加工的每个环节都要有一个清晰、全面的了解，这样才能避免由于工艺方案考虑不周而可能出现的产品质量问题，造成无谓的人力、物力等资源的浪费。全面合理的数控加工工艺分析是提高数控编程质量的重要保障。
数控车床是目前使用最广泛的数控机床之一。数控车床主要用于加工轴类、盘类等回转体零件。通过数控加工程序的运行，可自动完成内外圆柱面、圆锥面、成形表面、螺纹和端面等工序的切削加工，并能进行车槽、钻孔、扩孔、铰孔等工作。
本次设计说明书以数控车床车削轴类零件为例，根据被加工工件的材料、轮廓形状、加工精度等选用合适的机床，制定加工方案，确定零件的加工顺序，各工序所用刀具，夹具和切削用量等，编写加工零件的程序。
关键词：数控车床；工艺分析；刀具；切削用量；加工程序
Abstract
Parts of nc machining process analysis is the most important in the nc program and extremely complex link, also is the core of nc machining process designwork, must be completed before the nc machining plan formulation.A qualified programmer for nc machine tool and its functions and characteristics of control system, aswell as the influence of nc machining each link to have a clear and comprehensive understanding, so as to avoid the thoughtless process and product quality problems that may occur, causing unnecessarywaste of manpower and material resources and other resourcesprehensive reasonable nc machining process analysis is the important guarantee to improve the quality of numerical control programming.
Numerical control lathe is currently the mostwidely used one of nc machine toolsC lathe is mainly used for machining shaft, platexisymmetricalparts.Through the operation of the nc machining program, can automatically complete inside and outside the cylinder, cone surface, forming surface, threads and transverse processes such as machining, and for turning, drilling, reaming, reaming, etc.
This design instruction in CNC lathe turning a typical shaft parts, for example, according to the shape of the material, the outline of the processedworkpiece, choose suitable machine tools machining precision, processing scheme, determine the machining sequence of parts, eachworking procedure used tool, fixture and cutting dosage, etc.,write a program of machining parts.
Keywords: CNC lathe,Process analysis；The cutting tool;Cutting parameter；Processing program
目录
摘要I
Abstract II
第一章引言1
第二章零件工艺规程设计2
2.1零件图的审查2
2.1.1零件图的完整性与正确性3
2.1.2零件的材料分析3
2.1.2.1毛坯的种类3
2.1.2.2确定毛坯考虑因素4
2.1.2.3毛坯尺寸的确定5
2.2加工方法的选择5
2.3工艺设备的选择5
2.3.1机床的选择5
2.3.2量具及辅助用具的选择5
2.4零件的安装6
2.5选择夹具6
2.6刀具的选择8
第三章确定加工工艺方案9
3.1确定定位基准9
3.2工序与工步的划分9
3.3加工顺序的安排10
3.4加工路线的确定10
3.5加工工艺过程卡片11
第四章切削用量的计算13
4.1切削用量的选择13
4.1.1主轴转速的确定13
4.1.2进给速度的确定14
4.1.3背吃刀量的确定14
4.2切削用量计算14
第五章程序的编制与仿真加工17
5.1对刀点与换刀点的确定17
5.2工序二加工程序清单18
5.3工序三加工程序清单20
5.4零件仿真加工步骤21
5.4.1机床的开机21
5.4.2回零操作22
5.4.3加工程序输入22
5.4.4进行程序校验及加工轨迹仿真22
5.4.5程序试运行22
5.4.6进行对刀操作22
5.4.7在自动方式下加工23
致谢25
总结26
参考文献27
零件图
加工程序部分
加工工序卡
加工过程卡
零件样图
切削用量计算部分
斯沃仿真部分
字数统计
计算部分预览
