Classification of Universal Test Machine
One. The degree of automation can be divided into
1. Pointer?Universal Test Machine: This traditional?Universal Test Machine?has been eliminated by the digital?Universal Test Machine?due to its low test accuracy and low-cost performance. However, in the small force range, it is our common tension meter, which is often used by factories for simple force testing of small products. It is still very popular because of its low price.
2. The digital display?Universal Test Machine?is also called the microcomputer?Universal Test Machine: the test data is directly displayed on the LCD screen, the test items are relatively fixed, and it is often used in the quality control of the factory.
3. Computer system?Universal Test Machine: It is the most common?Universal Test Machine, because the computer collects the test data, and then calculates by the software program to obtain the final data that the user wants, and can be printed out in the form of a report. Commonly used in scientific research units, testing institutions, new product development, etc.
Tow. The control system can be divided into
1. Frequency conversion system?Universal Test Machine: The frequency conversion motor control system is adopted, and the stretching and compression speeds are controlled by the frequency conversion governor.
2. Servo system?Universal Test Machine: Using a servo motor control system, the tension, compression speed, and displacement control is more accurate. The servo motor system is a servo control system, that adopts intelligent feedback operation and can perform constant speed tests, cycle tests, programming tests, etc.
3.?Universal Test Machines with other driving methods: controlled by DC motors,?Universal Test Machines with this driving method have been gradually eliminated due to their low-cost performance.
Three, according to industry and functional characteristics can be divided into
1. Metal?Universal Test Machine: The metal material has high tensile strength and small elongation, and needs to be equipped with a metal punctuation extensometer.
2. Rubber?Universal Test Machine: The elongation rate of rubber or elastomer is relatively large, and a large punctuation elongation device is required. At the same time, the fixture's design should consider the rubber's characteristics and must not slip. O-ring fixtures, tire industry fixtures, etc. can be added.
3. Plastic?Universal Test Machine: The tensile strength of plastic is greater than that of rubber, and the elongation is large or small, and three-point bending tests are often tested.
4. Textile?Universal Test Machine: The textile industry needs to test the peeling, puncturing, tearing, and single-yarn tensile testing of fabrics. The fixtures and software are relatively special.
5. Paper?Universal Test Machine: Paper needs to be tested for tensile strength, ring pressure strength, vertical pressure, flat pressure, edge pressure, peel strength, etc. There are many fixtures.
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6. Leather?Universal Test Machine: Leather needs to be tested for tensile strength, tear strength, etc. The test items are relatively simple.
Four. According to the test material: metal material fixture and non-metal material fixture;
Five. According to the test temperature: normal temperature fixture, high-temperature fixture, low-temperature fixture, high and low-temperature fixture;?
Six. According to the purpose: Tensile fixtures, compression fixtures, bending fixtures, shearing fixtures, peeling fixtures, tearing fixtures, sealing fixtures, bending and bending fixtures;
Seven. According to the degree of automation: manual fixtures, pneumatic fixtures, electric fixtures, hydraulic fixtures.