Classification and introduction of tensile machines

Classification and introduction of tensile machines

The classification and introduction of tensile machine
In principle, it is divided into mechanical tensile machine and hydraulic tensile machine. The shape is divided into single-column tensile machine, double-column tensile machine, horizontal tensile machine, and vertical tensile machine. The ease of operation is divided into electronic tensile machine, computerized tensile machine, computer servo-type tensile machine, etc.

Hydraulic tensile machine: The hydraulic cylinder moves up and down to drive the vertical displacement of the middle link plate and the fixture to realize the various functions of the tensile machine. The advantage is that it can do higher-strength tensile testing, but the disadvantage is that the control accuracy is not high and it is not hygienic. It is mainly suitable for industries such as metal materials, bridge bearings, large plates, building materials, and composite materials. Its general load is above 300KN (30T). The working principle of the hydraulic station is as follows: the motor drives the oil pump to rotate, the pump sucks oil from the oil pump and then pumps oil, which converts the mechanical energy into the pressure energy of the hydraulic oil. The hydraulic oil is adjusted by the hydraulic valve through the manifold block (or valve combination) to achieve direction, pressure, and flow adjustment Then it is transmitted to the oil cylinder or oil motor of the hydraulic machinery through the external pipeline, thereby controlling the change of the direction of the hydraulic motor, the size of the force and the speed of the speed, and pushing various hydraulic machinery to do work.

The mechanical tensile machine is mainly driven by the motor to drive the spiral screw rod. The screw rod rotates to drive the link plate and the fixture to move up and down to realize the tensile, compression and peeling, tearing, shearing, three-point bending resistance and other functions of the tensile machine. . The advantage is high control accuracy, materials, and application industries mainly include: rubber, plastic, wire and cable, enameled wire, tape, adhesive, textile, shoemaking, leather, film, terminals and other industries.

There is no difference in function between the single-column tensile machine and the double-column tensile machine. It is mainly determined by the size of the tensile force, and is also related to the required displacement stroke of the measured product and the size of the sample.

Compared with the computer-based tensile machine, the computer-based control is more convenient, simple to operate, and powerful. For example, the computer-based tensile machine can be displayed through the software curve to find the displacement force value at each point and time. Display, so as to better reflect the quality of the tested product.

Compared with the computer type, the computer servo tensile machine has the following advantages: the load displacement accuracy can reach 0.0001, the test speed can be adjusted at any time (0.01mm/min-500mm/min) without affecting the test performance of the product, and the service life is 2 times longer. The test noise is 10 times smaller.