1. Description of four-point compression testing machine

This testing machine is suitable for multiple mechanical tests such as tension, compression, bending, bending resistance, peeling, tearing, shearing, puncture, low-key fatigue, etc. in the product, and can meet GB, ISO, JIS, ASTM, DIN,

JG, JT, YB, QB, YD, YY, QC, SY, SL, BB, HG and other international standards and industry standards to test and provide data. It has a powerful numerical control display system and a microcomputer control system, and a full LCD numerical control setting station Parameters, curves, displacements, and force values can be dynamically displayed on the LCD digital display, connected to a computer printer to realize full computer control and print standard test reports; the windows operating system enables dynamic display of test data curves, and test data can be added at will, The curve operation is more convenient. Easier. Curve traversal, overlay, separation, zoom printing and other full electronic display monitoring can be performed anytime and anywhere. 2. The working principle and performance of the four-point compression testing machine:

Driven by a servo motor, the servo motor drives the moving beam to move up and down through a transmission mechanism to realize the test loading process. This machine uses an advanced fully digital closed-loop control system for control and measurement, and a computer for dynamic display of the test process and test curve, and data processing. After the test, the curve can be amplified by software for data analysis and editing.

Three and four-point compression testing machine main technical parameters:

1. Specification: HA

2. Accuracy grade: 0.5 grade

3. Maximum load: 1000KG;

4. Effective force measurement range: 0.02/100-100%;

5. The resolution of the test force, the maximum load is 500,000 yards; the internal and external files are not divided, and the resolution remains unchanged throughout the process.

6. Effective test width: 600mm

7. Effective stretching space: 800mm

8. Test speed: 3~300mm/min

9. Speed accuracy: within ±0.5% of the indicated value;

10. Displacement measurement accuracy: within ±0.5% of the indicated value;

11. Deformation measurement accuracy: within ±0.5% of the indicated value;

12. Acquisition and induction method: high-precision sensor;

13. Control system: all-digital AC servo controller;

14. Software measurement and control system: a fully digital closed-loop control system, which can realize constant stress, constant strain, constant displacement, and test functions

15. Test bench lifting device: fast/slow speed control, adjustable;

16. Test bench safety protection device: software automatic diagnosis, electronic limit; 

17. Test bench return: manually can return to the initial position of the test at the highest speed, and automatically return after the test is over;

18. Overload protection: automatic protection when the maximum load exceeds 10%;

19. Tooling and fixture configuration: customized according to user product sample requirements;

20. Optional device: a set of brand Lenovo LCD computer; a set of HP color inkjet printer;

21. Motor: 2KW

22. Host size: 1000×680×2450mm;

23. Host weight: about 400kg

4. Functional characteristics of four-point compression testing machine:

1. Automatic reset: After the computer receives the test start instruction, the system automatically resets.

2. Automatic return: After the sample is broken, it will automatically return to the initial position.

3. Automatic gear shifting: according to the size of the load, different gear positions can be switched to ensure measurement accuracy.

4. Change speed: The machine can change the test speed arbitrarily according to different samples.

5. Indicating value verification: the system can realize the accurate calibration of the force value.

6. Control method: Test methods such as test force, test speed, displacement, and strain can be selected according to test needs.

7. One machine with multiple functions: equipped with sensors of different specifications, one machine with multiple functions can be realized.

8. Curve traversal: After the test is completed, the mouse can be used to arbitrarily find the force value and deformation data point by point of the test curve and analyze it.

9. Display: dynamic display of data and curve test process.

10. Results: The test results can be accessed, and the data curve can be analyzed.

11. Limit: with program control and mechanical limit.

12. Overload: It will stop automatically when the load exceeds the rated value.