The principle of electronic universal test machine disk reading

The electronic universal testing machine is a new generation of dual-space microcomputer controlled electronic universal testing machine designed specifically for universities and research institutes. The design of the test machine host and auxiliary equipment draws on advanced technology from Japan's Shimadzu, with beautiful appearance, convenient operation, and stable and reliable performance.

The reading of the electronic universal test machine is mainly done based on the Pascal principle and the lever moment balance principle. First, the high-pressure oil output from the oil pump penetrates into the various parts of the electronic universal test machine, such as the oil supply valve, oil return valve, oil cylinder, force measuring piston cylinder, pipeline and other parts. According to the Pascal principle, the oil pressures everywhere are equal, which is also the basis for calculation. The dial reading pointer is fixed with a toothed wheel, the wheel rotation is driven by a rod, which is driven by a push plate, which is driven by a force-measuring piston up and downward movement. When the electronic universal tester is working, high-pressure oil pushes the working piston to work, and it also pushes the force-measuring piston movement. Due to the Pascal principle, the pressure of the working piston and the force-measuring piston is the same. According to this linear relationship, the greater the pressure, the greater the distance of the force-measuring piston movement, and the greater the angle of the push rod pushing the pointer, that is, the greater the test force displayed. The increase in environmental tests (high and low temperature tests) and the increase in fixtures used for high and low temperatures. Effective stroke of tension machine:

When conducting tensile tests, although the size of the sample used is small, the elongation of the material is generally relatively high. Therefore, it is necessary to use a tensile machine with a large stroke to detect the tensile performance of flexible packaging materials. Otherwise, the operation of the fixture may exceed the stroke limit and cause damage to the equipment. However, the calculated test force still needs to be converted into the tonnage of the test machine according to the following formula, that is, the tonnage of the test machine ≥ test force ÷ 0.8. The tonnage value of the standard model that is greater than and close to this result, the electronic universal tester is an ideal optional tester specification. Tensile test (stress-strain test) generally clamps the two ends of the material sample on two fixtures at a certain distance, and the two fixtures separate and tensile the sample at a certain speed to measure the stress changes on the sample until the sample is damaged. Tensile test is one of the widely used methods to study the mechanical strength of materials, and a tensile test machine with constant speed movement is required. If the measurement results are inaccurate, the beam should be replaced in time; the beam moves in the opposite direction: it may be an error in the testing machine software, so you can contact the manufacturer in time. The beam only lowers and does not rise: Check whether the upper limit switch of the beam is damaged, and if it is damaged, replace the limit switch. The processed surfaces of the electronic universal testing machine parts have rust, burrs, bumps, scratches and other defects. The color of the test machine paint is not beautiful and generous, the tones are not soft, the color is not harmonious, the boundaries of different colors are not clear, and they are contaminated by each other. The paint and putty of the test machine are not strong enough, cannot resist oil and corrosion, and may cause peeling and falling off.