毕业设计（论文）-数控铣床结构设计【全套图纸】.doc

The Graduation Design for Bachelors Degree Design on The Structure of NC Milling Machine 全套图纸，加153893706 Candidate： Liu Jinbao Specialty: Mechanical Design and Manufacture Automation Class： B03-34 Supervisor： Prof. Meng Zhaosheng Heilongjiang Institute of Technology 2007-06·Harbin 摘　　要 本文首先对数控铣床的具体功能作了简要地阐述,然后对机床的布局做了设计,再分步设计机床的主轴系统、进给系统、回转工作台以及机床的外观等,进行了机床主要参数的确定，完成了传动零件的初步计算以及对齿轮、轴的弯曲载荷的验算。实践了金属切削机床设计与计算的基本原则及方法。 最终完成了以下工作：简化了主运动系统的设计，增加了系统的可靠性。设计工艺，提高效率，降低成本。设计了数控回转工作台机床的总体，机床主传动系统和主轴箱 关键词：数控铣床；结构；主轴；回转工作台；机床的外观 ABSTRACT In this paper a milling machine is designed. The concrete function of the numerical control milling machine has been explained briefly at first. Then the overall arrangement to the milling has been designed. And the main spindle system, feeding system, rotating work flat and the appearance of the milling machine are designed, importance parameters are decided, the calculation to transmission part and bending loads of shaft are completed. The basic principle and method of the design and calculation of metal cutting machine are carried out. Finally the following work has been completed. Simplified the design of main movement system, increased system reliability, improved efficiency and reduced costs. The NC rotating work flat, the overall structure of the machine and the main driving system are designed. Key wards: NC Milling Machine；Structure；Main Spindle；Rotating Work Flat； Appearance of the Milling Machine 目　　录 摘要 ………………………………………………………………………………………Ⅰ Abstract ………………………………………………………………………………Ⅱ 第1章　绪论…………………………………………………………………………… 1 1.1课题背景及研究意义 ……………………………………………………………1 1.1.1数控机床的加工原理 1 1.2 数控机床的分类 1 1.2.1按工艺用途分 2 1.2.2按运动方式 2 1.2.3按控制方式分 2 1.3本设计要完成的工作 3 第2章 数控铣床的总体设计 4 2.1铣床的功能及主要参数 4 2.1.1铣床的功能 4 2.1.2数控铣床的主要参数 4 2.2铣床床身的设计 4 2.2.1床身的结构要求 4 2.2.2床身的结构设计 5 2.3铣床的总体布局 5 2.4 本章小结 6 第3章 铣床主传动系统和主轴箱设计 7 3.1主轴及传动系统的设计要求 7 3.2主传动系统的设计 7 3.2.1主传动功率 7 3.2.2主传动速系统的设计 8 3.2.3主轴轴承的选择 11 3.2.4刀具的夹紧机构 11 3.2.5验算 12 3.3 本章小结 14 第4