基于mastercam建模与仿真加工本科学位论文

毕业设计（论文）

题 目：组合装配体的学 院：专业班级：指导教师：学生姓名：学 号：

CAD/CAM建模与

数控加工

机电工程学院 机械工程及自动化08级（3）班 职称：

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摘要

Master CAM就是其中之一。MastermCAM是集于CAD与CAM于一体，是一套完整的CAD/CAM交互型图形集成系统，自诞生以来，得到了广泛应用，是目前世界上安装套数最多的CAD/CAM软件之一。目前在我国机械加工行业也是使用较普遍的一种软件，它可用于数控机床，数控铣床，数控镗床，加工中心，数控线切割机床等，而且能数用于多种数控装置的机床。可实现产品的设计，工程图绘制，2-5坐标的镗铣加工，车削加工。2-4坐标的切割加工，钣金下料等，该软件使用方便，容易掌握，被广泛用于机械制造业和模具行业的零件二维绘图三维设计，数控自动编程与加工。

本设计从实际出发，通过Mastercam X设计一个组合装配体零件，然后对整体零件凸模与凹模进行详细的工艺分析，走刀路径模拟和仿真加工过程。在完成此加工仿真典型实例的基础上，本文总结了基于MasterCAM软件进行模具加工仿真的一般方法，并对其进行了进一步的研究与探索。

CAM加工方案包括机床类型选择、刀具路径选择和加工参数设置；数控加工工艺包括加工方案的选择、毛坯材料的选择、毛坯结构尺寸与建模、工装夹具的设计和装配、刀具卡、切削用量的计算、量具选择与检验方法、热处理等。在仿真加工中对比了粗加工、半精加工和精加工的加工效果。

关键词：组合装配体，数控铣床，仿真加工，CAM，MastercamX

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ABSTRACT

MastermCAM is set in CAD and CAM at an organic whole, is a complete set of CAD/CAM interactive graphics integrated system, since its birth, to a wide range of applications, the world's most cycle of installed one of CAD/CAM software. In our country at present is mechanical processing industry is a more common use of a software, it can be used for numerical controlled machine, CNC milling machine, CNC and boring machine, processing center, nc wedm etc, and can count for a variety of numerical control device of machine tools. Can realize the design of the product, engineering chart drawing, 2-5 coordinates of boring and milling, turning processing. 2-4 coordinates of cutting processing, metal materials, the software is convenient to use, easy to master, is widely used in mechanical manufacturing and mould industry part 2 d graphics 3 d design, CNC automatic programming and processing.

This design from reality, through the Mastercam X to design a combination of assembly parts, and then the whole part of convex die and the concave die for detailed process analysis, tool path simulation and Simulation of machining process. Upon completion of the machining simulation based on typical examples, this article summarized based on the MasterCAM software for mold processing general simulation method, and has carried on the further research and exploration.

CAM processing scheme including machine type selection, the tool path selection and processing parameters Settings; Numerical control processing technology including processing scheme selection, blank material choice, the blank structure size and modeling, tooling/fixture design and assembly, cutting tools, cutting the amount of calculation card, measuring choice and inspection method, heat treatment, etc. In the simulation processing in contrast the rough machining, half finishing and finish machining processing effect.

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目录

第一章 绪论…………………………………………………

1.1 Mastercam概述……………………………………………………………… 1.1.1 Mastercam的简介……………………………………………………… 1.1.2 Mastercam的主要功能和特点…………………………………….…… 1.2 数控技术的概述……………………………………………………………. 1.2.1 数控技术简介………………………………………………………….. 1.2.2 数控技术发展趋势…………………………………………………….. 1.2.3 数控机床的概念………………………………………………………… 1.2.4 数控机床的构成……………………………………………………….. 1.2.5 数控加工技术的特点………………………………………………….. 1.2.6 数控技术发展策略……………………………………………………...

第二章 Mastercam的建模仿真加工概述……

2.1 被加工零件的图样分析和几何建模………………………………………… 2.2 组合装配体的生成…………………………………………………………… 2.3 零件的加工工艺分析………………………………………………………… 2.4 生产刀具路径与仿真加工………………………………………………….. 2.5 后置处理……………………………………………………………………..

第三章 组合装配体的几何建模………………………………

3.1 组合装配体凸模的几何建模…………………………………………………. 3.1.1绘制基准面……………………………………………………………… 3.1.2 实体生成……………………………………………………………….. 3.2 组合装配体凹模的几何建模……………………………………………… 3.2.1绘制基准面……………………………………………………………… 3.2.2实体生成………………………………………………………………….

第四章 Mastercam的数控编程…………………………

4.1 机床选择及参数设置………………………………………………………. 4.2 凸模的走刀路径及参数设置……………………………………………….. 4.3 加工代码的生成…………………………………………………………….. 4.4 凹模的走刀路径及参数设置……………………………………………….. 4.5 加工代码的生成………………………………………………………….…..

第五章 加工前工艺分析…………….………………………

5.1加工工序的划分…………………….……………………………………… 5.2毛坯材料选择…………………….…………………………………………. 5.3刀具选择…………………….…………………………………………….. 5.4切削用量选择…………………….………………………………………….

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