Share 5 factors affecting Snap button pulling testing machine

The Snap button pulling testing machine is a product of the linkage of electronic technology and mechanical transmission. It makes full use of the respective expertise of machinery and electricity to form a large-scale precision tensile testing machine. Tensile testing machine is used to test the tensile, compression, bending, blasting, shear, tear, elongation, dead load, elasticity, thread slip, peeling and other mechanical properties of various materials. It has a wide measurement range, high accuracy and efficiency. Fast, the data is displayed, recorded and printed in time.

 

5 factors affecting Snap button pulling testing machine:

1. Force sensor

The quality of the sensor determines the accuracy and stability of the tensile machine. At present, the tensile machine with a sensor on the market generally uses an S-type sensor with a small force value, and a spoke-type sensor for a large force value. The internal sensor is generally a resistance strain gauge type. If the accuracy of the strain gauge is not high or the strain gauge is fixed, the adhesive has poor anti-aging ability, or the sensor material is not good, these will affect the accuracy and service life of the sensor. TESTEX tensile testing machine adopts well-known The sensor has high accuracy, good linearity, and very stable, unchanged for decades.

 

2. The part that drives the sensor: ball screw

If the screw has a gap, the tensile test will directly affect the maximum test deformation and elongation at break. At present, some tensile machines on the market are T-type ordinary lead screws, so the gap is relatively large, the friction is relatively large, and the life is short. The screw used in the TESTEX tension machine is a high-precision backlash-free ball screw with high surface quenching hardness, a service life of several decades, and the same accuracy.

 

3. Transmission system of tensile testing machine

At present, the transmission system of ordinary tensile machine on the market, some use reducer, and some use ordinary belt. The main disadvantages of these two transmission methods are: the former requires regular lubrication, and the latter cannot guarantee that the transmission synchronization affects the test results. The transmission system of TESTEX tensile testing machine adopts full-arc synchronous belt deceleration to ensure synchronization of transmission accuracy, high transmission accuracy, high efficiency, stable transmission, low noise and long service life.

 

4. Power supply of tensile testing machine: motor

At present, some tensile testing machines on the market use ordinary three-phase motors or variable frequency motors. This type of motor is controlled by analog signals. The control response is slow, the positioning is inaccurate, and the general speed range is narrow, with high or low speed or low speed without high speed, speed control Inaccurate. The motor used in the TEXTEX tensile machine is a fully digital AC servo motor. The control method adopts fully digital pulse control. The speed range is wide, up to 0.01-1000mm/min. The control positioning is accurate and the response speed is fast. The motor can ensure accurate speed regulation in the whole range. Long life span, up to several decades.

 

5. Measurement and control system

The measurement and control system is a combination of software and hardware. At present, most of the tensile testing machine measurement and control systems on the market are controlled by 8-bit single-chip microcomputers, which have low sampling rate and poor anti-interference ability. In addition, if the number of bits of the AD converter is also low-resolution, then the measurement Will be inaccurate.

 

This article introduces some of the factors that affect the test results, the scope of application of test methods, the test environment, instruments, sampling and standardized operations during the test, which can be used to improve the accuracy of laboratory tests and guide manufacturers to effectively improve product quality. For more questions about Snap button pulling testing machine or textile testing equipment, please leave us a message.