I. Product Description and Application

This testing machine is primarily used for torsional fatigue testing of helical springs, and for torsional fatigue testing of cylindrical helical springs under compression. The control system utilizes PLC control, with a liquid crystal display showing the parameters during testing. Frequency adjustment is achieved through a variable frequency drive controlling a three-phase variable frequency motor. The reciprocating angle of torsion is adjustable, realized through an eccentric structure, allowing for fixed-angle torsional fatigue testing without torque measurement.

II. Product Features

Fatigue tests for cylindrical helical springs are conducted under axial compression, equipped with an axial force compression mechanism. Axial compression is applied using a handwheel, and the torsional fatigue test of the spring is performed in the state of axial compression.

This machine is suitable for left and right-handed springs, with different twisting methods adjusted by auxiliary tools.

This unit is equipped with a device for pre-torsion of springs.

Section 3: Functions of the Unit

1. The control system utilizes PLC control, with a liquid crystal display showing test frequency and test times.

Adjust test frequency with the rotary knob.

3. The eccentricity can be adjusted, meaning the amplitude can be adjusted as well. A calculation method for the relationship between eccentricity and amplitude is provided. A scale is displayed during adjustment. Swing angle = ([sin^-1(eccentricity/110)] * 360°) / 3.14.

4. Axially compress using the handwheel, and perform the torsional fatigue test on the spring while in the axially compressed state.

5. Replacement of auxiliary equipment allows for torsional fatigue testing of coiled springs.

6. Fatigue tests for cylindrical helical springs are conducted under axial compression. The axial force compression mechanism, whose compression position is measured and displayed by a displacement sensor, employs a screw nut mechanism and four-column guidance. The handwheel is manually operated to apply force, adjusting the space and exerting axial force. After loading, the nut is tightened to increase rigidity.

7. The cylinder helical spring's breakage shutdown method uses a wiring circuit. When the spring breaks, the circuit is interrupted, and the test stops.

8. Set the number of test runs, then the machine will automatically shut down.

9. Equipped with an emergency stop function; pressing the emergency stop switch will halt the motor, illuminate the indicator light, and alert the operator to take timely action.

10. Equipped with equipment status indicator lights for prominent alerts and long-distance monitoring.

11. Features a fully enclosed protective hood for personal safety.

12. Compressed space displacement display, with displacement sensor for digital readout, capable of showing the remaining spring height or deformation amount, with a minimum resolution of 0.01mm.

13. When testing different springs, use different auxiliary tools. The base pressure plate features positioning holes and fixing screw holes. Upon delivery, 1 set of tools is provided according to the spring drawings.

Please contact us for details on the relevant parameters!