电子万能试验机的滚珠丝杠，传感器，电机，软件和硬件，传动系统是试验机的重要组成部分，如何从众多企业中选择出优质的试验机，这5个因素起着决定性的作用。
Ball screw, sensor, motor, software and hardware, transmission system of electronic universal testing machine is an important part of testing machine. How to select high quality testing machine from many enterprises, these five factors play a decisive role.
1滚珠丝杠
1 ball screw
电子万能试验机目前使用的丝杠有滚珠丝杠和梯形丝杠。一般来说梯形丝杠间隙比较大，磨擦力比较大，使用寿命短。目前市场上会有部分厂家，为了节约成本获得更大的利润会使用梯形丝杠代替滚珠丝杠。
Ball screw and trapezoidal screw are used in electronic universal testing machine at present. Generally speaking, the clearance of trapezoidal lead screw is relatively large, the friction force is relatively large, and the service life is short. At present, there will be some manufacturers on the market, in order to save costs and obtain greater profits, trapezoidal screw will be used instead of ball screw.
2传感器
2 sensor
传感器是试验机的精度和测力稳定性的重要部件，目前市场上的电子万能试验机传感器的类型有S型、轮輻式。传感器内部电阻应变片精度不高、固定应变片用的胶抗老化能力不好、传感器的材料不好都会影响传感器的精度。
Sensor is an important part of the accuracy and force measurement stability of the testing machine. At present, the types of sensors of the electronic universal testing machine on the market are S-type and spoke-type. The accuracy of the sensor will be affected by the inaccuracy of the resistance strain gauge inside the sensor, the inadequate anti-aging ability of the adhesive used for fixing the strain gauge and the inadequate material of the sensor.
3电机
3 Motor
优质电子万能试验机电机采用交流伺服调速系统，松下交流伺服电机，性能稳定可靠，具有过流、过压、过载等保护装置。目前市场上还有一种电子万能试验机采用普通三相电机或变频电机，这种电机采用模拟信号控制，控制反应慢，定位不准确，一般调速范围窄有高速就没了低速或有低速就没了高速，并且速度控制不准确。
The motor of high quality electronic universal testing machine adopts AC servo speed regulation system, Panasonic AC servo motor has stable and reliable performance, and has over current, over voltage, overload and other protective devices. At present, there is also an electronic universal testing machine which uses ordinary three-phase motor or variable frequency motor. This kind of motor uses analog signal control, which has slow control response and inaccurate positioning. Generally, if the speed range is narrow, there will be no low speed or low speed, there will be no high speed, and the speed control is inaccurate.
4软件和硬件
4 Software and Hardware
优质电子万能试验机采用品牌计算机，控制系统软件为Windows XP操作系统平台，具有运行速度快，界面温和，操作简单等特点，可满足不同材料的试验测量需要，可根据国家标准，国际标准或者行业标准测量各种材料的物理性能试验。
The high-quality electronic universal testing machine adopts brand computer and the control system software is Windows XP operating system platform. It has the characteristics of fast operation, mild interface and simple operation. It can meet the test and measurement needs of different materials. It can measure the physical properties of various materials according to national standards, international standards or industry standards.
5传动系统
5 drive system
电子万能试验机传动部分主要有二种，一是圆弧同步齿轮带，精密丝杠副传动；二是普通皮带传动。第一种传动方式传动平稳，噪音低，传动效率高，精度高，使用寿命长。第二种传动方式不能保证传动的同步性，因此精度，平稳性等都不如第一种传动系统。
There are two main transmission parts of electronic universal testing machine, one is arc synchronous gear belt, precision screw pair transmission, and the other is common belt transmission. The first dianbiao.37ix.com.cnjingdianji.37ix.com.cnshusongdaib.07858.net shusongdain.07858.net zhushiguan.07858.netfangdaomenb.89ix.comtransmission mode has the advantages of smooth transmission, low noise, high transmission efficiency, high accuracy and long service life. The second transmission mode can not guarantee the synchronization of the transmission, so the accuracy and stability of the transmission system are inferior to the first one.