COMPANY PRODUCT

1.  Product Features and Propose:
The computer controlled spring pressure testing machine is mainly used for testing the strength and performance of various springs such as large precision spiral springs and disc springs. It is widely used in railways, military enterprises, industrial and mining enterprises, etc. The test operation and data processing meet the requirements of GB/T7796-2005 "Technical Conditions for Spring Tension and Compression Testing Machines".

2.  Main Host
1. It adopts single-arm structure.
2. Transmission system: It is composed of precision synchronous belt wheel, precision ball screw pair and guiding part.
3. Drive system: The test machine is driven by a domestic stepping motor, with low noise, long life, stable transmission, stable and reliable performance. It has protection functions such as overload, over current, over voltage, automatic disc alignment, and emergency stop.
4. Measurement control system:
1) The test force measurement control system is composed of high-precision load sensors, measuring amplifiers, A/D conversion, digital display meters, stabilized power supplies, etc.; the displacement measurement control system is composed of photoelectric encoders, frequency multiplying shaping circuits, and counting circuits. Through various signal processing, computer display, control and data processing functions are realized.
2) The self-designed built-in controller ensures that the testing machine can achieve closed-loop control of parameters such as test force, sample deformation and beam displacement, and can achieve constant velocity test force, constant velocity displacement, constant velocity strain, and constant velocity load Cycle, constant velocity deformation cycle and other tests. Smooth switching between various control modes.
3) At the end of the test, you can manually or automatically return to the initial position of the test at high speed.
4) Realize the true sense of the test force in the whole process without bins, and the effective resolution is up to ±1/250000.
5) The electrical control circuit refers to the international standard, conforms to the electrical standard of the national testing machine, and has strong anti-interference ability, which ensures the stability of the controller and the accuracy of the experimental data.
5. Software and software operation:
1) Use the computer screen to display, all operations of the testing machine should be completed with the help of the computer screen through the computer keyboard and mouse. The computer screen displays the testing force, displacement, beam moving speed, working status of the testing machine, etc., and has shortcut keys for operation.
2) It has real-time data collection, data calculation and processing, and provides data storage, retrieval, statistics, printing and other functions. It can display in real time, draw test force-deformation curves, can zoom in or out of the curve, and partially zoom in the curve, and the user can Drag the mouse to realize the translation of the magnified curve in the magnified area, with functions such as curve print preview and manual trimming.
3) For the spring test, the segment stiffness P/ of the compression spring should be automatically calculated. Calculated as follows:
Spring stiffness  P^/=（P₂—P₁）/（F₂—F₁）
4) Print various test reports according to user requirements (the report format is proposed by the user).
 
3.  Main Technical Parameters:
1. Maximum test force: 100N
2. Effective measuring range of test force: 1%-100%
3. The minimum reading value of the test force: 0.001N
4. Minimum reading value of displacement: 0.0005mm
5. Loading speed: 0.05-300 mm/min (stepless speed regulation and arbitrary setting can be realized)
6. Effective test space of test machine: 200mm
8. Diameter of pressure plate: 50mm
9. Test machine size (length * width * height): 600*400*630mm
10. Weight of the whole machine: about 100kg
11. Motor power: 0.75kw
12. Protection link: the test force exceeds 10% of the rated load, and the drive system is automatically protected against overcurrent.
13. Display mode: computer screen display, win7 operating platform, screen display test force, displacement, beam moving speed, test machine working status, test force-displacement curve and various pull-down menus, etc., man-machine dialogue mode, easy to operate.
 
4.  Main performance：
1. Automatic reset: test force, displacement, and reset at any time as needed.
2. Automatic calibration: it can automatically achieve the accuracy calibration of the test force indication value.
3. Control method: It can realize various control methods such as test force, test speed, displacement, etc., with the following functions:
1) Set the test force to detect the deformation of the spring
2) Set the amount of deformation and detect the test force of the spring
3) Set the test force to detect the remaining height of the spring
4) Set the remaining height of the spring and detect the test force of the spring; the spring can be pre-compressed by setting the pre-compression height, and the number of pre-compression can be set at any time.
5) Up to 10 detection points can be set (can be set for backhaul detection).
6) The detection of spring deformation is based on the contact spring of the working pressure plate.
7) The variable caused by the sensor can be compensated, that is, the deformation caused by the rigidity of the sensor and the whole machine does not affect the accuracy of the displacement.
8) With overload automatic shutdown function;
5. The position display number of the middle beam can be permanently memorized before being changed;
6. Power supply voltage: 220VAC±10% 50HZ