First of all, the force sensor of the tensile testing machine, because the quality of the sensor determines the accuracy of the tensile testing machine and the fluctuation of the force measurement, the current tensile testing machine sensor market generally uses the S-type small force sensors are usually Dingli spoke sensors used, and the outside of the sensor is generally a resistance strain gauge type. If the accuracy of the strain gauge is not high, or the aging resistance of the adhesive used repair the strain gauge is not good, or the material of the sensor is not good, it will affect the accuracy and use of the sensor.
Then there's the ballscrew that powers the movement of the Sensor, because if there is a gap in the screw rod, the experimental data made in the future will be directly related to the maximum deformation and strain after the experiment breaksreact. At present, some screw rods of tensile testing machines on the market use T-shaped ordinary screw rods. In this case, the gap is relatively large, and the friction force is relatively large. The service life is short. Ball screw, the surface quenching hardness is HRC58-62, and the service life can be several reach decades. And guarantee the same accuracy. Then there is the transmission system of the tensile testing machine. Some of the transmission systems of the tensile testing machine currently on the market use reduction gears, and some use ordinary belts. Oil, the latter type cannot guarantee the synchronization of the transmission and will affect the test results. National Instrument Tensile Testing Machine ensures gear synchronization accuracy, high transmission accuracy, high efficiency, smooth transmission, low noise and long service life without maintenance.
The next consideration is that the power source (motor) of the tensile testing machine is also called the motor. Currently, some tensile testing machines on the market use ordinary three-phase AC motors or variable frequency motors. This type of motor is controlled by analog signals, and the control response is slow. The positioning is not accurate, the normal speed control range is narrow, when there is high speed, there is no low speed, or when there is low speed, there is no High speed, and the speed control is not accurate. Fast response, full-scale accurate speed control, and long service life of up to decades without maintenance.
Finally, there is the measurement and control system (ie, software and hardware) of the tensile testing machine. Currently, the measurement and control system of most tensile testing machines on the market is controlled by an 8-bit single-chip microcomputer with nlow sampling rate and anti-interference ability is poor, and the other is the AD converter. When the number of bits of the AD converter has low resolution. Then the measurement will not be accurate.
Wuhan Guoliang Instrument is a tensile testing machine manufacturer that specializes in producing electronic tensile testing machine, universal tensile testing machine and others Testing instruments Testing materials include: rubber, plastic, metal, geotextile, etc. Welcome to the consultation!