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毕业文档+CAD图纸 镗床 T6113 电气 控制系统 设计 毕业 文档 CAD 图纸

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摘要随着机械工业的发展，作为工作母机的各类机床得到了广泛的应用，而这些机床的自动化和精密程度却有很大差异。在欧美、日本等国家里，他们的机床数控化程度都相对比较高，但在我国国内的机床大约有90%多还处于老式的继电器控制下。由于继电器控制的机床有耗材、耗能、故障率高的缺陷，从而浪费了很多的人力、物力和财力。如果说把这些机床全部都更新换代，那样会需要很大一笔资金，就目前情况上来说是不现实的，所以就有人开始尝试从控制部分的改造方面来下手，将它们的性能提升一个档次，更可以解决它的一些弊端。基于以上情况，我选择了用PLC来完成T6113卧式镗床的电气控制部分这个题目，目的是使机床能快速响应动作，灵活可靠的完成生产任务，而故障率要相应降低。PLC以内部的逻辑触点代替了继电器的机械触点，来控制机床的动作，逻辑触点与机械触点相比动作时间大大缩短，连接快而可靠，还有就是它的寿命比机械触点有很大幅度的增长，可达到几百万次到千万次。经过设计并作了实物的演示，结果证明了设计的成功。关键词：继电器 故障率 逻辑触点AbstractWas each kind of tool machine of the machine tool to get an extensive application along with the development of the machine industry, but the automation and precise degree of these tool machines contain very big difference. In the Europe and America, Japanese etc. nation, their tool machine number controls to turn degree all opposite higher, but at our country the local tool machine has 90% about to still be placed in old style much of after electric appliances control under. In order to hasing already consumed a material, consume an ability and breaking down high blemish of rate after the tool machine of the electric appliances control, waste a lot of man powers, material resource and financial power thus. If say that all renewing these tool machines changes generation, will need so very greatly one fee for writing gold, the circumstance comes up to say to be not realistic currently, so start try for someone to start from the reformation aspect of the control part, promote their function a file time, can even solve some of its irregularities.According to the above circumstance, I chose to use parts of this topics of the electricity control that the PLC completes the T6113 lie type beds, the purpose makes the tool machine be able to respond to action quickly, the vivid and dependable completion production mission, but break down a rate and correspond to lower. The PLC touched to order to replace by the logic of the inner part after the machine of the electric appliances touch a point, control the action of the tool machine, the logic touches to order to touch with machine to order to compare action time to shorten consumedly, conjunction quick but credibility, also have to be its life span ratio machine to touch to order to have a very significant growth, can attain several million times arrive the ten million time.Through design and made real object to play to show, success proven a design as a result.Keyword: After electric appliances Breakdown rate The logic touches to order目录摘要Abstract第1章 绪论 11.1 选题的目的和意义1 1.2 关于课题的一些介绍和讨论11.3 电气控制技术的发展21.4 PLC的发展史及特点4第2章 镗床的概况 7 2.1 T6113卧式镗床主要结构及机械运动72.2 电气控制9 2.2.1 卧式镗床电力拖动及控制要求92.2.2 T6113卧式镗床的电气控制9第3章 镗床电力拖动电动机的选择 133.1 概述 133.2 镗床用电动机容量的选择 133.2.1 镗床主运动电动机容量的选择 133.2.2 快速移动电动机容量的选择 143.2.3 后立柱电机容量的选择 143.2.4 主轴箱和工作台油泵电动机容量的选择 15第4章 镗床电气控制用低压电器的选择164.1 概述 164.2 低压电器的选择 164.2.1 低压断路器的选择 164.2.2 交流接触器的选择 204.2.3 电源引入开关 234.2.4 熔断器的选择 234.2.5 行程开关 264.2.6 其他所需电器的选择 274.2.7 控制变压器的选用 28第5章 电气控制电路中的保护环节325.1 概述325.2 短路保护325.3 镗床的联锁保护325.3.1 手动与机动联锁325.3.2 限速保护335.3.3 正反转电气联锁33第6章 PLC控制系统的设计346.1 PLC控制系统设计的内容和步骤346.1.1 PLC控制系统设计的内容 346.1.2 PLC控制系统设计的步骤 346.2 PLC控制系统的硬件配置346.2.1选择PLC机型346.2.2开关量I/O模块的选择