摘要本次设计的机床为大型绿色船用钢板数控铣边机，主要用来对大型船用钢板进行焊接前的坡口加工，以提高钢板焊接质量 。在设计过程中，以加工大型船用钢板为对象，以实现高效率、高自动化、绿色安全目的，进行有针对性的设计。设计过程中，在满足任务要求的基础上，努力追求工作可靠、安全性好、操作方便、结构简单、经济性高。

铣边机的主运动为主轴的旋转。作为机床切削加工的主要运动，主运动设计的合理性对机床整体性能有重要影响，它的精度直接影响着机床的加工精度。铣边机的进给运动为小车沿导轨方向的运动，合理的进给机构和进给速度设计，能有效的提高加工效率和机床稳定性。而本文则主要对铣削机构，尤其是针对主电机选择、主传动设计、主轴部件设计以及进给方案设计进行详细论述。43853

毕业论文关键词：铣边机，数控，主运动，进给运动，船用

Abstract    

The design of the machine for the large green ship plate CNC milling machine, mainly used for large-scale ship plate in front of the welding groove processing, in order to improve the quality of welded steel plate. In the design process to the processing of large marine steel plate, in order to achieve high efficiency, high automation, security purposes, targeted design. To meet mission requirements on the basis of the design process, and strive for reliable, good security, convenient operation, simple structure, and economy.

The main movement of the milling machine is the rotation of spindle . As the main movement of the machine tool cutting, the rationality of the design of the main sports have a major impact on the machine overall performance, its accuracy has a direct impact on the machining accuracy. Milling machine, the feed movement as the movement of the trolley along the rail direction, reasonable feed institutions and processes to speed design, can effectively improve the efficiency of processing and machine stability. This paper is mainly detailed dissert for milling bodies, especially selected for the main motor, the design of the main drive spindle assembly design and Feeding motion design. 

Keyword: Edge Milling Machine, CNC, Main movement, Feeding motion，marine

目  录

第一章  绪论 1

1.1 设计背景及国内外发展现状 1

1.2课题设计内容及其任务 1

第二章  主运动设计 3

2.1 主传动方案设计 3

2.2 主电机的选择 4

2.2.1 电机类型的选择 4

2.2.2 切向铣削力计算 4

2.2.3 电动机功率和转速的选择 5

2.3 主轴箱设计 6

2.3.1 运动和动力参数计算 6

2.3.2 齿轮设计 8

2.4 主轴组件设计 18

2.4.1 方案拟定 18

2.4.2 主轴设计 19

2.4.3 主轴轴承的选择 24

第三章  进给运动设计 26

3.1 进给运动方案设计 26

3.2 进给电机的选择 26

3.2.1 选择电动机类型 27

3.2.2 选择电动机功率