Purchase electronic universal testing machine from 5 aspects

Testing machineWhether the measurement can be accurately and durable is not only the reason for the appearance quality of the test machine, but more importantly, the internal software: ball screws, motors, sensors, transmissions and other systems play an important and decisive role. So how to select high-quality test machines from many brands of test machines below 5Some factors play a decisive role.

1. Ball screw: The current 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. Software and hardware: The high-quality electronic universal testing machine adopts brand computers, and the control system software isWindows XPThe operating system platform has the characteristics of fast running speed, gentle interface and simple operation. It can meet the test and measurement needs of different materials. It can measure the physical performance tests of various materials according to national standards, international standards or industry standards.

3. Motor: High qualityElectronic universal testing machineThe 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 test 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, if the speed regulation range is narrow, there will be no low speed or if there will be low speed, there will be no high speed, and the speed control will be inaccurate.

4. 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.

5. 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 areSType, wheel 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.

MoreElectronic universal testing machineTechnical information is available in Jinan Hengsi Shanda Instrument Co., Ltd.