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毕业设计-数控热切割机设计，共32页，13642字
设计一台数控热切割机床。
主要技术指标为：
切割板材尺寸不小于6000×3000mm；
割炬升降距离不小于150mm。
具体工作任务如下：
1）完成热切割机床的总体设计和各部件机械结构的设计；
2）完成设计计算说明书一份，6000字以上。
摘 要
目前，我国机械加工行业中钢板下料数控化程度普遍不高，大多采用的是手工氧—乙炔切割，这种现象不仅存在于小规模单件生产的小型企业，也存在于大批量生产的大型企业中。本文根据生产实际中存在的问题，结合当今数控热切割机的发展状况以及企业对数控热切割机的需求，对数控热切割机进行了基本的结构设计。
这次设计的重点包括导轨、导向、支架、滑架割炬座及数控与伺服系统的选型，数控热切割机采用龙门双边驱动结构，通过X、Y轴交流伺服电机和精密行星齿轮减速器驱动相应齿轮齿条副，从而带动割炬实现X、Y两相复合运动切割出生产中所需要的各种平面图形的工件。割炬的Z向位置调整由Z轴交流伺服电机通过行星齿轮减速器与联轴器带动丝杠螺母副组成的传动机构实现。这样对于非平面的工件也能进行切割。本次设计主要进行的是机床结构的初步设计。
本机的数控系统选用的是数控切割机专用数控系统，它专门针对热切割机的工作原理及过程，设计了一些特有的功能，本文只就其基本功能做了简要描述。
关键词：热切割机；数控系统；二维工作平台
The design of CNC thermal cutting machine
Abstract
At present, mechanical processing industries in the steel material under the CNC general level is not high in our country, most of using a oxygen and acetylene cutting by hand, this phenomenon exists not only in a single small-scale production of small enterprises, but also in mass production the large-scale enterprises. Based on the actual production of the problems that exist in light of today's CNC thermal cutting machine and the development of the business-to-CNC thermal cutting machine hot demand, the basic structural design is about CNC thermal cutting machine.
The focus of this design, including lead rails, the guide, support, the shelf of torch and a CNC servo system selection, the CNC thermal cutting machine driven by the goal of bilateral structure, through the X and Y axis servo motor through the exchange of precision planetary Gearbox drive gear and rack corresponding vice, thus cutting torch to achieve X and Y complex two-phase campaign to cut production by the needs of the various parts of the plane graphics. The Z cutting head to the position adjustment by the Z-axis servo motor through the exchange of planetary gear reducer coupling lead screw and nut component of the transmission mechanism to achieve. This non-plane parts can be cut. The main design of the machine structure is the preliminary.
The CNC system is just designed for the CNC cutting machine, it specifically for thermal cutting machine and the working principle of the process, a number of unique design features, this article only on its basic function of a brief description.
Key words: thermal cutting machine, CNC system, two-dimensional work platform
目 录
摘要
Abstract
1 概述 1
1.1 数控切割机的国内外现状 1
1.2 数控热切割机的主要用途 1
1.3 数控切割的种类和各自特点 3
2 切割机总体设计 5
2.1 主体结构 5
2.2 纵向驱动控制 6
2.3 横向驱动控制系统 6
2.4 割炬座 7
2.5 导轨 7
3 二维平台 8
3.1 二维平台传动系统 8
3.2 二维切割平台结构 9
3.3 二维平台结构分析 10
4 数控伺服系统 14
4.1 数控系统设计方案 14
4.2 数控系统简介 14
4.3 伺服驱动系统选型 16
5 结论 19
参考文献
致谢