The ball screw, sensor, motor, software, hardware and transmission system of the electronic universal testing machine are important components of the testing machine. Let's follow the Xiaobian to understand what factors can determine the quality of the electronic universal testing machine.

1、 Ball screw

At present, the lead screws used in electronic universal testing machine include ball lead screw and trapezoidal lead screw. Generally speaking, the trapezoidal lead screw has large clearance, large friction force and short service life. At present, some manufacturers in the market will use trapezoidal screw instead of ball screw in order to save costs and obtain greater profits.

2、 Sensor

The sensor is an important part of the accuracy and force measuring stability of the testing machine. At present, the types of electronic universal testing machine sensors in the market include S-type and spoke type. The accuracy of the sensor is affected by the poor accuracy of the internal resistance strain gauge, the poor aging resistance of the adhesive used in the fixed strain gauge, and the poor material of the sensor.

3、 Motor

The motor of high-quality electronic universal testing machine adopts AC servo speed regulation system and Panasonic AC servo motor, which has stable and reliable performance and has overcurrent, overvoltage, overload and other protection devices. At present, there is also an electronic universal testing machine on the market, which adopts ordinary three-phase motor or variable frequency motor. This motor adopts analog signal control, with slow control response and inaccurate positioning. Generally, the speed regulation range is narrow, there is no low speed when there is high speed, or there is no high speed when there is low speed, and the speed control is inaccurate.

4、 Software and hardware

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 running speed, mild interface and simple operation. It can meet the test and measurement needs of different materials, and can measure the physical performance test of various materials according to national standards, international standards or industrial standards.

5、 Transmission system

There are mainly two kinds of transmission parts of electronic universal testing machine: one is circular arc synchronous gear belt and precision lead screw pair transmission; Second, ordinary belt drive. The first transmission mode has the advantages of stable transmission, low noise, high transmission efficiency, high precision and long service life. The second transmission mode can not guarantee the synchronization of transmission, so the accuracy and stability are not as good as the first transmission system.