1Product Introduction of Electronic Spring Torsion Fatigue Test Stand

The electronic spring torsion test bench consists of a loading system, a transmission system, a measurement control display system, etc., and is suitable for testing the dynamic fatigue mechanical properties of helical torsion springs. The machine adopts a horizontal structure. The computer screen displays the torque, torsion angle, and number of twists of the spring (spring), which is transmitted by a precision planetary gear reducer. It has the characteristics of uniform loading, stability, no impact phenomenon, and accurate data acquisition and control. Suitable for testing the fatigue mechanical properties of helical torsion springs and mainspring springs.

The whole machine utilizes a fully digital AC servo control system imported from Japan and a self-developed data acquisition and processing systemSTC8800The photoelectric encoder collects the twisting angle and number of twists of the sample, and can set the twisting angle and number of twists of the sample to achieve automatic shutdown function. It can output and print test data, etc.

This machine has two control modes: angle control and torque control.

2Description of electronic spring torsion fatigue test bench

【 Main 】 The machine adopts a horizontal structure to ensure the rigidity of the entire machine. The fixture is made of high-quality alloy structural steel40CrNiMoAQuenching（HRC45～50）Method: The main drive shaft is treated with alloy structural steel quenching to ensure its service life. The installation and disassembly of the sample are convenient and fast.

The drive system is driven by a fully digital AC servo control system imported from Japan. Wide speed adjustment range, uniform and stable loading.

The transmission system adopts a precision planetary gear reducer to ensure uniform, stable and accurate transmission. lateral space300mm～1000mmManually adjust within the range.

[Measurement Display System] Test and Testing Function:WinXPChinese operating platform with variable structurePIDParameter adjustment function, achieving full closed-loop control of torque, torsion angle, and deformation. Using a window based operating system with a graphical interface, the display screen and operation panel can be configured; Can set test speed and various control parameters; Real time display of basic test results (fracture value, peak value); Real time display of various relevant parameter graphics during the experimental process; Can achieve system diagnosis and display diagnostic results. The testing machine implements hierarchical management permissions. Different users can access different management interfaces and have three levels of user management permissions.

The operation mode adopts programmable control mode, and customers can program according to different testing methods.

The whole machine utilizes a fully digital AC servo control system imported from JapanSTC8800The digital data acquisition and processing system uses a photoelectric encoder to collect the torsion angle of the sample. The whole machine has low noise, no pollution, and basically achieves maintenance free and maintenance free operation.

Main operating interface

[Safety protection system] Overload protection, overcurrent, overvoltage protection, overspeed protection, etc.

3Main technical performance indicators

3．1 Maximum dynamic test torque: ±5Nm；

3．2Test torque indication error: positive and negative directions ≤±1%

3．3Test torque repeatability indication error: positive and negative directions ≤1%

3．4Maximum torsion angle range:0～±10000⁰ （±3600⁰Any setting within the scope);

3．5Effective experimental space:1000mm；（300mm～1000mmAny manual adjustment within the range

3．6Test machine spindle center height: ≥100mm；

3．7Coaxiality accuracy between two fixtures:1000mmWithin the range of ≤Φ0.3mm

3．8Twist angle resolution:0.1⁰；

3．9Loading speed:0～50turn/min Arbitrary setting (determined by the torsion angle of the spring);

3．10Angle accuracy: ≤±0.2⁰；

3．11Test frequency:10×10⁴Any setting within the second time limit;

3．12Voltage Voltage:AC220V 50Hz Motor power0.4kW

4Requirements for the working environment of the test bench

4．1at room temperature10⁰C～35⁰CWithin the range, relative humidity ≤80%；

4．2On a stable foundation or workbench;

4．3In an environment without vibration and without corrosive media around it;

4．4The fluctuation range of the power supply voltage should not exceed the rated voltage 10%.

5Configuration of the test bench

5．1The motor and driver adopt a Japanese fully digital AC servo control system

5．2The photoelectric encoder is produced by Omron Corporation in Japan or South Korea

5．3Dual channel digital controller One set (self-developed)

5．4One high-precision torque sensor

5．5One host (self-developed)

5．6One set of standard lever and reverse frame for verification (self-developed)

5．7One set of fixtures (four pieces)——Fax drawings of the demand party