Factors that determine the quality of electronic universal testing machines

Electronic universal testing machineThe ball screw, sensor, motor, software and hardware, and transmission systems are important components of the test machine. These five factors play a decisive role in how to choose a high-quality test machine.
1. Ball screw
The current lead screws used in electronic universal testing machines include ball screws and trapezoidal screws. Generally speaking, the gap between trapezoidal lead screws is relatively large, the friction force is relatively large, and the service life is short. There are currently some manufacturers on the market who use trapezoidal screws instead of ball screws in order to save costs and obtain greater profits.
2. Sensor
Sensors are important components of the accuracy and strength stability of the test machine. Currently, the types of electronic universal test machine sensors on the market include S-type and wheeled type. The internal resistance strain gauge of the sensor is not very accurate, the glue used to fix the strain gauge is poor in aging resistance, and the poor material of the sensor will all affect the accuracy of the sensor.

3. Motor
The high-quality electronic universal test machine motor adopts an AC servo speed regulation system, and Panasonic AC servo motor has stable and reliable performance, and has protection devices such as overcurrent, overvoltage, and overload. There is also an electronic universal testing machine on the market that uses ordinary three-phase motors or variable frequency motors. This motor uses analog signal control, slow control reaction and inaccurate positioning. Generally, the speed regulation range is narrow and there is no low speed, or there is no high speed, and there is no high speed, and there is accurate speed control.
4. Software and hardware
The high-quality electronic universal testing machine adopts a brand computer, and the control system software is the WINOOWsXP 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. It can measure the physical performance test of various materials according to national standards, international standards or industry standards.

V. Transmission system

There are two main transmission parts of the electronic universal test machine: one is the arc synchronous gear belt and the precision lead screw secondary transmission; the other is the ordinary belt transmission.

This transmission method has stable transmission, low noise, high transmission efficiency, high accuracy and long service life. The second transmission method cannot guarantee the synchronization of the transmission, so the accuracy and stability are not as good as the transmission system.

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