Ningxia qingtongxia equipment manufacturing industry development in national media reporter thumb up

On August 10, the 13th line network media to ningxia their visit to the country came to the qingtongxia in the side of Yellow River, in addition to the attracted by the beauty of the Huang Hejin shore, qingtongxia area rely on the cooperation between the eastern and create a new win-win model for journalists also left a deep impression.Media reporters know the situation you might imagine, many well-known brands abroad precision parts on the car was born in qingtongxia a car wheel hub bearing company & ndash;& ndash;Ningxia fisker automotive wheel hub bearing co., LTD.Ningxia fisker automotive wheel hub bearing co., LTD., founded in 2014, production of high-grade automotive wheel hub bearing, wheel hub unit repair kits, high-grade precision gearbox bearing and other series products.Introduction of fully automatic CNC grinding machine 150 units, fully automatic CNC lathe 200 units, and other advanced numerical control equipment.Through here, after fine processing and assembly of auto parts products 60% export to Europe and Asia, and southeast Asia and other international markets, 40% of the product supply domestic automobile manufacturing and special precision equipment manufacturing enterprises, such as geely, kia, Beijing auto car manufacturers.Intelligent production workshop controller introduces, according to the company after the completion of all project will implement the annual output of 15 million sets of deep groove ball bearing, taper roller bearings 10 million sets of car parts, has completed cone premium car wheel hub bearing, deep groove ball bearing 360 sets of automatic production line, equipment to reach the domestic advanced level digital automatic production.Always taking technical innovation as the core of enterprise development, through the luoyang bearing industry at home and abroad related research institute, zhejiang university of technology, Beijing institute of technology, the government’s enterprise and the high level talented person cooperation, self-help become one of China’s top ten bearing company, China bearing parts of the carrier.The company passed the automotive industry the most strict quality system certification, product quality and technological innovation culture has been the world’s leading automobile manufacturers and machinery manufacturers trust.The park is a typical move west to the east projects, from hangzhou to qingtongxia, in order to promote industrial upgrading and economic development in western China and industrialized level contribute our own strength, east and west industrial rebalancing, pioneered in new win-win cooperation relationship.The built in upgrading the equipment manufacturing industry transformation and upgrading of the northwest ningxia, promote local economic development, to create more employment opportunities, make the equipment manufacturing industry aircraft carrier, realize scale management and industrialization development has very important practical significance.(the original title: qingtongxia equipment manufacturing industry development in national media reporter thumb up) (source: ningxia news)

Deep neck press numerical control transformation

a11-20 type a deep neck mainly include the machine body, the slider, clutch, a brake, and manipulator parts.It was based on the crank connecting rod as the working mechanism, its action principle to see.Crank rod system is rigid, so the movement of the sliding block is mandatory, slider stroke times per minute and the movement of the sliding block solid go curve is the same.This belongs to general press sheet stamping press, suitable for all kinds of cold stamping process, such as shear, punching, blanking, bending and line drawing, etc., due to deep throat and mouth, and is suitable for cars, electronics, electrical, instrumentation and other industries of large sheet punching and blanking, the punching line drawing, etc.

  在实际生产中,它存在着如下几个方面的问题:①人工走位精度差”操作工人劳动强度大,容易发生伤残事故,安全得不到有效的保障不适应小批量不同品种的加工,产品的柔性差;④次品率高,生产效率低。由此影响了生产力的发展,采用先进的数控装置已经成为我国深颈压力机加工技术的总趋势。提高深颈压力机数控化率有两个途径:一是购置新的数控型深颈压力机,二是把普通型深颈压力机改装成数控型深颈压力机。根据我国目前的经济状况,花大量的资金更换全新的数控型深颈压力机是不太可能的,同时对原有的普通型深颈压力机来说是一个很大的浪费,而普通型压力机数控改造既经济又快捷,是符合我国国情的,是提高深颈压力机数)实现步骤)根据式对零序电压的当前采样点进行分析并计算出零序电压的幅值!。)判断!是否满足!>!2x15V,以此作为是否有接地故障发生的前提判据,若不满足此条件则继续步骤1)。若满足此条件则开始对各出线线路的零序电流采样分析。)利用式计算出各出线线路的零序有功功率为出线线路编号)。)对各线路零序有功功率进行比较,则其最大者即为单相接地线路。

  4结语通过分析补偿系统发生单相接地时零序电流量的特征,提出了基于零序电流有功分量的选线原理,其本质是寻找最大零序有功功率突变量的代数值。还分析了递推DFT算法的优点及实现该选线原理的算法步骤,此算法只用到信号的实部和虚部,避免了任何关于相位关系的计算。计算量小、运算速度快、实时性好。因此它是补偿系统判单相接地故障比较有效的一种方法。

  胡天禄。矿井电网的漏电保护北京媒炭工业出版社,唐轶。选择性漏电保护。北京:煤炭工业出版社,1995樊舜尧(1968-),男,工程师。现为中国矿业大学信电学院在读研究生。

  ;责任编辑:胡昌炽)控化率的有效途径。鉴于此,专对江苏扬州星力机械制造有限公司生产的A11-20A型深颈压力机进行了经济型数控化改造。

  2深颈压力机的数控化改造参照所示,深颈压力机主要有:OP数控单元操作面板、MCP机床面板、ENC数控单元、DI\/0输入输出模块、X轴和Y轴步进电机和驱动器、X轴和Y轴三相混合式步进电机、压力机主电机为三相380V)、电磁铁离合器YA(型号为MQ1-5131,380V\/50HZ)以及一些X,Y轴正反向限位开关、急停开关及安全光电开关等部分组成。

  圄2深颈压力机的数控系统结构示意圄1-0P操作面板2-MCP压力机机床面板;3-ENC数控单元;4-DI\/0输入输出模块;5-机床电控箱;6-主电机;7-YA电磁离合器;8-急停开关、限位开关、光电安全装置;9-X轴和Y轴步进电机驱动器;10-X轴和Y轴步进电机工作原理是根据加工需要编写加工程序,通过操作面板输入到数控单元ENC,或者在计算机上编程并模拟运行无误,通过智能通信接口与数控单元ENC联网,将指令或数据输送到数控单元。数控系统按照程序的要求,经过信息处理、分配,分去控制主电机M和电磁离合器YA,控制X轴Y轴移动若干个最小位移量,实现压力机的压块与工件的相对运动,芫成产品的加工。)主电机控制原理参照所示,主电机的控制分为手动控制和自动控制。)手动控制手动控制一般用于检修调试或者单一元件的加工,合上刀闸开关”G,此时转换开关置于手动位置,钥匙开关SA1闭合,按下启动按钮SB2,KM1吸合并自保,主电机M开始旋转,按下手动按钮SB3或者脚踏开关SF,中间继电器KA吸合,电磁离合器YA接通AC380V电源,压块下滑,开始进行零件加工,SB1为停止按钮。

normal processing, automatic transfer switch SW1 in the state, when to start processing, CNC unit ENC issue instructions, 1 or absorption, contactor KM1, turning on the power supply main contact closure, main motor begins to spin.Need stamping king 3 – issued instructions, intermediate relay and 3, KA and subsequently, electromagnetic clutch YA, turning on the power supply voltage block action, start parts processing.Need to stop the NC instruction.0, 2, disconnect KM1 and KA, main motor electromagnetic clutch YA M and power at the same time.0, 1, 2, 3, intermediate relay by nc programming and control, both in parallel the fly-wheel diode, prevent reverse high voltage power relay instantaneous burn out ENC nc unit.

(3) hybrid stepping motor feed system) to the transmission part of the reform is deep neck press into dismantling the original machine mechanical transmission mechanism, using stepper motor by gear reducer drive screw, drive the workpiece longitudinal and lateral movement.Such as shown below, the longitudinal feed the X axis drive, stepper motor 3 fixed on the chassis, after 2 drive screw drive gearbox artifacts longitudinal movement.Y drive the transverse feed is directly driven by stepping motor 1 screw, thereby giving impetus to the lateral movement of the workpiece.Longitudinal feed the retarding mechanism, can achieve the required pulse equivalent, it can also meet the requirements of structure and increase torque.

Yu 4 feed system structure schematic Yu 1 – Y axis stepper motor gearbox;3 – the X axis stepper motor;4 – bed;5 – workbench) choose Germany BERGERLAHR berger lahr company production of three-phase hybrid stepping motor and its drive to apply principle of ac servo stepper motor system.The stepper motor absorb the advantages of the two and five phase motor drive adopts ac servo motor drive with works, the motor system completely solve the traditional stepping motor at low speed crawl, a large resonance region, the sound, and high-speed torque and small faults, therefore is called with the working characteristic of the ac servo motor stepper motor system.

reference stepper motor drive control principle diagram, the AC380V power through to isolate and step-down transformer TB become AC220V power for the stepper motor drive voltage until L, N, CP + nc unit, CCW + output pulse control drive WD3-007 output pulse and the direction of the output, U, V, W to stepping motor winding Angle of connection.Drive and stepper motor side PE requires reliable grounding.

Yu 6 step motor winding connection and the current waveform Yu, as shown in the reference and berger lahr company applying principle of ac servo motor drives to the stepper motor drives, input AC220V after rectification generate DC325V meridians width modulation into 325 v stepped sinusoidal current waveform, each step motor rotation step, by changing the output current of the drive frequency to change the motor speed, and output the number of steps walked motor turning Angle.As shown in flow through each phase winding current is stepped sinusoidal current, ladder with sinusoidal current drive, makes every step motor to corresponding current change is very small, so you don’t produce low speed crawl, resonance, the undesirable phenomena, such as sound big operating characteristics are almost the same as ac servo motor.In only three power line between motor and drive, with the possibility of ac asynchronous motor as attachment error less.Drive circuit board adopted anti-corrosion treatment, overheating, over-voltage, under-voltage, motor phase short circuit and over current protection function.Drive has a half flow set of functions, when the stepper motor, please press your subscription electromechanical journal bookmark1 = 2002 self-issued, on application will send order.Address: Shanghai day key bridge road no. 1, zip code 200030, telephone (021 charged static after 100, the drive output current automatically to the forehead the output current of 60, used to prevent motor fever.

in three-phase hybrid stepping motor drive system in actual production application, fully showed a high precision, fast response speed, torque, small electric heating, no resonance region and a series of advantages.

(4) stop limit protection Yu (stop spacing and safety protection devices such as ENC – nc unit; SB6 – stop button; SB5 – start button; SB4 – distance release button; S01, S02, S03, S04 – the X axis and Y axis to limit switch; ZCZ – work briquetting test switch 1) numerical control system is equipped with soft and hard limit protection. Soft limit alarm is by setting the machine tool’s axis within the machine tool coordinate system moving coordinate values of minimum and maximum to hsu, within the region known as the working area wash limit set in the interior of the hard limit. Hard limit protection trip limit is hsu by travel switch, trip switch immediately once they are under pressure to cut off the feed drive power supply, and inform the CNC system to produce distance alarm.)If the abnormal situation in the machining process, press the stop button SB6 would immediately cut off all drive power supply, emergency stop, troubleshooting, must be removed artificially stop, and may continue to work.)ZCXZCY is a deep neck presses the working point of ZCZ for briquetting test device, through programming and electromagnetic clutch used YA now complex graphics processing.

<SQ6,SQ7为安全光电开关激控压力机在自动工作过程中,若有人误入加工区域,光电开关动作,立即切断驱动电源,确保人身设备安全。

3 epilogue after numerical control transformation of deep neck press, main advantage is: the system is flexible and reliable.With input information storage capacity, can be commonly used disposable input processing program memory, call at any time, the numerical control unit by using the computer as control unit less hardware, the system failure rate of components is reduced, so as to improve the reliability.

control system software, easy to expand, strong adaptability.As long as change program can different parts processing, can carry out the processing complex design.

have self-diagnosis ability, easy maintenance.The system has diagnostic program, you can easily find out fault type and less downtime.

program editor is convenient.In the field can increase, delete and modify the debugger, also may carry on the programming simulation running on the computer, communication way transmitted to numerical control unit.

can realize fully automated processing.Only good clip board processing in the processing, on the machine press the start button, the rest of the machining process can realize full automation, greatly reduces the operating workers labor intensity is popular among the workers.

can achieve safety protection.If anyone goes in the process of machining processing area, numerical control system can automatically cut off the power and implement security protection, ensure the safety of production.

save money.Compared to purchase new CNC deep neck press can save a large sum of money.

control principle is complex, the maintenance personnel knowledgeable, beginning ability is stronger.

need to be highly familiar with programming and operation personnel and trained.

engineering college of electrical engineering, Shanghai jiaotong university robotics institute visiting scholar, published over 20 papers.

;Editor: Yao Ke)

Water does not forget to dig Wells Changsha, actively participate in disaster relief

Since June, a wide range of torrential rain openning the earth, and the xiangjiang river, zi river, ruanjiang levels across the alert.In June, according to climate center of hunan province, the province’s average rainfall extremum, breaking the record in 1951 the first high historical, more than 1998 years.
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changsha wins and actively participate in disaster relief have spent
& other;One party hard, p plus support & throughout;, changsha is to flood relief, July 3, in changsha city federation of industry and to the whole city general association of private enterprises, business organizations in suzhou, a call to lend a helping hand, help the affected people through.People in changsha city non-public economy has urgent action, changsha, wins intelligent equipment co., LTD., under the guidance of chairman jian-bo Chen, the company all staff to actively participate in disaster relief, to send in the quake-hit areas to rice, edible oil, water and other essential supplies life, shows the yong to the good image of social responsibility.
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changsha wins and actively participate in disaster relief have spent
, President Chen said that the survival and development of the organization of the party and the government and the social from all walks of life support and help, water don’t forget to dig Wells, when the people too hard, we should first, abiding by the party and government, help the affected people through.
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changsha – intelligent equipment co., LTD.
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changsha, intelligent equipment co., LTD. (formerly changsha inserted planer mechanical and electrical equipment manufacturing co., LTD.) was founded in 2002, until now, changsha, wins in a very short period of time based on the current domestic broaching device and its manufacturing process of detailed research and analysis, the comprehensive technical promotion and personal improvement, on the basis of all specifications developed a full range of broaching machine and several kinds of special broaching machine.At present, the company on the broaching technology research, dry the national leading position, has bid for more than 30 patents.
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(the original title: changsha, actively participate in disaster relief, yong bear the social responsibility of a good image)