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一种自动除尘系统控制模块的设计 总被引:1,自引:0,他引:1
喷雾除尘技术中,传统的除尘系统自动化程度不高.对传统系统进行改进,着重设计了控制模块,激光粉尘仪、PLC、变频器等的联合应用可以实现以下功能:实时监测粉尘浓度;根据检测结果,自动调节水压、气压以控制喷雾液滴的大小,从而对不同大小的粉尘实施针对性的降尘作业;当粉尘浓度不超标时,系统停止作业,节能环保. 相似文献
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基于PLC的耙料机自动控制系统 总被引:1,自引:0,他引:1
介绍了利用可编程控制器(PLC)对耙料机系统进行升级改造。解决该系统设备老化,故障频发,维护困难的问题,提高生产自动化控制水平。给出了控制系统的基本组成,软硬件设计与系统工作的基本流程,并简述了监控系统组态。经实践表明:该系统设计符合要求,系统运行安全可靠,实现了生产自动化,管理网络化智能化。 相似文献
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针对普通缝纫线绕线机自动化程度低、对操作者熟练程度要求高等问题,设计了一种基于可编程逻辑控制器(Programmable Logic Controller,PLC)顺序功能图(Sequential Function Chart,SFC)的缝纫线绕线机自动控制系统,有效提高了缝纫线绕制的效率与自动化程度。根据缝纫线绕线机结构组成,分析绕线机基本原理及工作流程,利用SFC逻辑清晰的优点,完成自动控制系统的设计和编程,开发一种能够自动完成上料、绕线、夹线、断线和下料等功能的缝纫线绕线机自动控制系统,具有绕线效率高、程序可读性好等特点。 相似文献
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深孔的长径比(L/D)越大,钻削时加工难度也越大。为了提高深孔加工精度和工作效率,需要从刀具、工艺和控制等多方面加以改进。文章提出了一种基于伺服电机检测钻头扭矩、用PLC对加工过程进行自动控制、用人机屏实现人机交互的深孔钻加工系统。调试结果表明:采用该系统既能提高钻削效率和加工精度又能延长钻头的寿命。 相似文献
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Twist drill flute profile design is necessary in order to determine the required grinding wheel profile for a flute production. An accurate drill flute profile design is generated for two-flute conical twist drills using analytical equations to generate a drill flute profile design needed for the production of twist drills with straight lips. The required grinding wheel profile for a flute production was expressed in digitized form as well as in terms of two curve-fitted circular arcs. The drill flute profile geometry can never be precisely generated when required grinding wheel profile is represented by two circular arcs and the generated flute profile is just a very good approximation of the design flute profile. A CAD (computer aided design) software has been developed using MATLAB to determine the required grinding wheel profile for generating a given drill flute profile design. 相似文献
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In this study, the surface of steel tooth drill bits (Ni-Cr-Mo based) was subjected to the solid-state boriding treatment with 10- to 50-nm nanoboron powder. Boriding processes were carried out at a constant temperature of 1273 K for 30, 45, 60, 75, 90, and 105 min using a solid-state box boriding technique. Borided drill bit samples were characterized by conventional methods (microstructure, microhardness, X-ray diffraction, and chemical analysis). The wear behavior of borided samples was tested at different loads and sliding speeds by a microabrasion experimental setup. Metallographic studies showed that the boride layers have a sawtooth morphology and consist of FeB and Fe2B. The thickness and hardness of the boride layer were 35.29–202.56 μm and 1300–2333 HV0.1, respectively, depending on the duration. The wear resistance of borided samples increased significantly due to the increase in surface hardness and lubricating effect, both of which were caused by the boriding process. A groove wear mechanism prevailed in borided samples, whereas that of bare steel tooth drill bits (STDBs) was grooving, rolling, and mixed. 相似文献
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针对现有扇形板研磨方法效率低、占用天车和浪费劳动力资源等缺点,设计一种扇形板自动研磨工装,通过对该工装的运动分析及运动仿真,证明该机构能够满足研磨时的运动要求,且适用于多种规格的扇形板研磨。 相似文献
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采用锥面磨削法刃磨麻花钻的后刀面,可显著提高刀具的耐用度和使用寿命,有利于保证工件的加工精度和表面质量。锥面磨削法刃磨麻花钻的关键是建立数学模型(后刀面方程),据此编制计算机床坐标值的程序,研制刀具刃磨机床。文中针对锥面磨削方法中麻花钻后刀面方程的建立进行了比较深入的探讨。 相似文献
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台式钻床的自动化改造 总被引:1,自引:0,他引:1
从机械、液压、电子三个方面介绍了将普通台式钻床改造为自动钻床的方法。通过设计计算,确定了钻床主轴的结构和主要参数,拟定了液压系统原理图,选择了液压元件,给出了自动钻床的功能表图,并对其顺序控制的过程、功能和特性进行了描述。 相似文献