目录CE6152普通车床数控化改造摘要 (II)Abstract (IV)第1章绪论 (1)1.1本文选题的背景及意义 (1)1.1.1 概述 (1)1.1.2数控机床的优越性 (1)1.1.3数控机床在我国的发展现状 (2)1.2机床进行数控化改造的必要性 (3)1.2.1从微观上看改造的必要性 (3)1.2.2从宏观上看改造的必要性 (4)1.3机床数控化改造的现状 (4)1.3.1国外机床改造业的现状 (4)1.3.2我国机床改造业现状 (5)1.3.3目前我国数控化改造市场的现状 (5)1.3.4数控化改造是发展我国数控设备的一个重要方面 (6)1.4卧式车床数控化改造的特点 (6)第2章数控化改造方案 (9)2.1总体设计方案的拟定 (9)2.2设计参数 (9)2.3总体方案确定 (9)第3章介绍CE6152普通车床 (11)3.1 CE6152机床的组成和主要技术参数 (11)3.2 加工范围及特点 (13)3.2.1加工范围 (13)3.2.2 CE6152车床的加工特点 (13)3.3 传动系统的介绍 (14)3.3.1主运动传动系统 (14)3.3.2进给传动系统 (14)3.3.3刀架纵横向移动 (15)3.3.4机动进给量的计算 (15)3.3.5车削螺纹 (15)第4章数控系统软、硬件的设计 (17)4.1数控系统的特点 (17)4.2硬件设计 (17)4.2.1单片机的选择 (17)4.2.2存储芯片的选择 (18)4.2.3I/O接口芯片 (18)4.3软件设计 (20)4.3.1监控模块 (20)4.3.2插补计算模块 (21)4.3.3步进电动机控制模块 (21)4.3.4误差补偿模块 (21)4.3.5系统软件的抗干扰设计 (21)第5章进给伺服系统的设计计算 (22)5.1纵向机械传动部分的数控化改造和设计计算 (22)5.1.1切削力计算 (22)5.1.2滚珠丝杠的设计计算 (23) (23)5.1.3计算进给牵引力)(NFm5.1.4计算最大动载荷C(N) (24)5.1.5选择滚珠丝杠螺母副 (24)5.1.6滚珠丝杠的验算 (25)5.1.7确定齿轮传动比 (27)5.1.8步进电动机的计算与选择 (28)5.2横向机械传动部分的数控化改造和设计计算 (31)5.2.1切削力计算 (31)5.2.2滚珠丝杠的设计计算 (32)5.2.3计算进给牵引力) (32)F(Nm5.2.4计算最大动载荷C(N) (32)5.2.5选择滚珠丝杠螺母副 (33)5.2.6滚珠丝杠的验算 (33)5.2.7确定齿轮传动比 (35)5.2.8步进电动机的计算与选择 (36)第6章其他装置的安装 (39)6.1主轴脉冲发生器的安装 (39)6.2自动回转刀架 (39)6.3丝杠导轨的自动润滑 (40)6.4对车床导轨和床鞍配合滑动面的改造、密封、加防护罩 (40)6.5车床加防护罩及密封 (40)参考文献 (41)致谢 (43)附录 (44)CE6152普通车床数控化改造摘要机床的概念,所谓数控是按照含有机床(刀具)运动信息程序所指定的顺序自动执行操作的过程。
而计算机数控机床就是数控机床在计算机监控下进行工作。
它的优点很多,如可以在同一机床上一次装夹可完成多个操作,生产率显著提高等优点,但它的价格昂贵。
由于我国现在使用的机床大多数为普通车床,自动化程度低,要更新现有机床需要很多资金。
为了解决这个问题,也为了适应多品种中、小批量零件加工我们选择机床经济型数控改造。
在CE6152普通车床上采用适合现场实时控制的8031单片机为控制器,以运行特性好、可靠性高的步进电机为驱动执行元件进行数控改造。
本论文拟定了CE6152普通车床数控化改造总体设计方案,介绍了CE6152机床的组成、主要技术参数、加工范围及特点和传动系统,进行了CE6152普通车床数控化改造数控系统软、硬件的设计,纵向机械传动部分的数控化改造和设计计算,横向机械传动部分的数控化改造和设计计算以及其他装置的安装设计计算。
改造后的CE6152车床有如下优点:(1)可以加工卧式车床加工不了的曲线曲面等复杂零件。
(2)可以实现加工柔性自动化,效率比靠凸轮或挡块等实现自动化的机床高3~7倍。
(3)加工精度高,尺寸分散小,易于装配。
(4)可实现多工序集中加工,提高了相关的加工精度,同时减少了被加工零件在机床间的频繁搬运。
(5)拥有自动补偿等多种功能,对于批量较大的,简化了传统机床加工工艺中的工序,机床利用率得以大幅度提高。
(6)由于采用了自动化加工技术,可以大大降低操作者的劳动强度,减少废品的产生,提高工作效率。
关键词:数控,车床,改造,CE6152,8031单片机,步进电机TAIYUAN UNIVERSITY OF SCIENCE & TECHNOLGYCOLLEGE: Institute of Electrical and MechanicalNAME: Liu XiaomingSTUDENT NUMBER: 200822130128CLASSES AND GRADES IN SCHOOL: Mechanical design and manufacturing automation 0811 INSTRUCTOR: Jia YuqinAbstractNumerical Control (NC) is any machining process in which the operations are executed automatically in sequences as specified by the program that contains the information for the tool movement .When Numerical Control is performed under computer supervision, it is called Computer Numerical Control (CNC).CNC machines have many advantages over conventional machines. For example, there is a possibility lf performing operations on the same machine in one setup and production is significantly increased. One of its disadvantages is that they are quite expensive. In our country conventional machine is used widely. So if the machines are replaced, there is going to need a lot of money. In order to agree with the development of our economy, we can reform the conventional machines.The overall master design: The way to NC improvement of general machine tool CE6152 was introduced that using single-chip computer 8031 to realize the real-time control and driving by step motor.This paper took up the overall design scheme for common lathe’s NC transformation,introduced its consitions,main technological parameters,work range and specialty and transmission system,as well as, the design of soft&hard ware for CE6152 has been done in this article.The longitudinal mechanical transmission part of the numerical control transformation and design calculation were also done;Horizontal mechanical transmission part of the numerical control transformation and design calculation and design and calculation for other device.After the transformation,this machine has many advantages as follows:(1) complex curves and surfaces which characteristics cannot be done by common lathe but this transformed lathe can.(2) realize flexible automathic machining,efficiency has been highly improved 37 times than CAM or block piece lathes.(3) Processing of high accuracy, scattered size is small, easy to assemble.(4) can achieve multiple operation concentrated processing,improve relative machining accuracy,reduce the processing in the machine tool parts between the frequent handling at the same time.(5) own autocompensation and other functions,for large batch simplify the process ofcommon lathe.(6) use automatic processing technology, greatly reduce the labor intensity of the operator, reduce the waste generated, improve the work efficiencyKey word: Numerical Control,machining,improvement,CE6152,single-chip computer 8031,step motor第1章绪论1.1本文选题的背景及意义1.1.1 概述整个人类社会的文明史,就是制造技术不断演变和发展的历史。