What are the factors that affect the accuracy and performance of universal testing machines?

1. First of allUniversal testing machineThe force value sensor determines the accuracy and strength stability of the test machine. Currently, the small force value of the tensile machine on the market is generally an S-type sensor, and the large force value is generally a wheel-type sensor. The internal sensor is generally a resistive strain gauge type. If the accuracy of the strain gauge is not high or the anti-aging ability of the glue used to fix the strain gauge is not good or the material of the sensor is not good, it will affect the accuracy and service life of the sensor. Jinan Hengsi's sensor has high accuracy, good linearity, and very stable performance, and will not change for decades.
2. The second is the ball screw that drives the sensor movement, because if there is a gap in the screw, the test data made in the future will directly respond to the deformation and elongation after break. Currently, some screws on the market use ordinary T-shaped screws. In this way, the gap is relatively large, and the friction is relatively large, the service life is short. The screws used by Jinan Hengsi are German high-precision gapless ball screws, with a surface quenching hardness of HRC58-62, and their service life can reach decades. And ensure the accuracy remains unchanged.
3. Another thing is the transmission system of the tension machine. Some of the tension machine transmission systems on the market currently use reducers, while others use ordinary belts. The main disadvantages of these two transmission methods: the first type requires regular lubricating oil, while the latter type cannot ensure that the synchronization of the transmission affects the test results. Jinan Hengsi ensures the synchronization accuracy of the transmission, high transmission accuracy, high efficiency, stable transmission, low dry sound, and long service life without maintenance.
4. Again, the power source (motor) of the tension machine is also called a motor. Currently, some tension machines on the market use ordinary three-phase motors or variable frequency motors. This kind of motor uses analog signal control, slow control reaction, inaccurate positioning, generally narrow speed regulation range, low speed without high speed with high speed, and low speed without high speed, and inaccurate speed control. The control method adopts full digital pulse control, with a wide speed regulation range, accurate control positioning, fast reaction, can ensure accurate full-scale speed control, and long service life, up to decades without maintenance.
5. It is the measurement and control system of the universal tester tension machine (that is, software and hardware). Currently, most tension machine measurement and control systems on the market use 8-bit microcontroller control, with low sampling rate and poor anti-interference ability. In addition, if the number of bits of the AD converter of the AD converter is low, the resolution is low. Then the measurement will not be accurate.http://www.hssdtest.com/