This testing machine is mainly used for torsional fatigue test of vortex coil spring and torsional fatigue test of cylindrical spiral torsional spring under compression condition.
The control system adopts PLC control, and the liquid crystal screen displays the parameters under the test state.
Frequency adjustment is realized by using frequency converter to control three-phase variable frequency motor.
The reciprocating Angle of torsion can be adjusted. It is realized by eccentric structure.
No torque measurement.
Features
The fatigue test of cylindrical spiral torsional spring is carried out under axial compression. The machine has an axial compression mechanism, which can be used for axial compression by hand wheel
This machine is suitable for the left and right rotation of the spring, the different methods of torsion by the fixture auxiliary adjustment.
The machine has a device that can pretwist the spring.
Function
1 PLC control, LCD display test frequency, test times
2 Knob to adjust test frequency
3 Amplitude adjustable: The ruler indicates eccentricity, and the relationship between eccentricity and swing Angle can be calculated by formula-- Angle =[sin-1(eccentricity /110）*360°]/3.14
4 The hand wheel is subjected to axial compression and the torsional fatigue test of the spring is carried out under the axial compression condition
5 The torsion fatigue test of vortex coil spring can be carried out when auxiliary tools are replaced
6 The fatigue test of cylindrical spiral torsional spring is carried out under axial compression. The compressed position is measured and displayed by a displacement sensor. Axial force compression mechanism adopts screw nut mechanism, four-column guide, manual force of hand wheel to adjust space and apply axial force, after loading, tighten with nut to increase rigidity;
7 The breaking stop mode of the cylindrical spiral torsional spring adopts the way of wire circuit. The spring breaks, the loop breaks and the test stops
8 Preset test times, automatic stop
9 Emergency stop function: press the emergency stop switch, the motor stops and the indicator light is on to prompt the operator to deal with it in time
10 Equipment status display light, eye-catching reminder, remote monitoring
11 With a fully enclosed protective cover to protect personal safety;
12 The displacement of compressed space is displayed digitally by displacement sensor measurement. The residual height or deformation of the spring can be displayed. The minimum resolution is 0.01mm
13 When testing different springs, different auxiliary tools should be used. There are positioning holes and fastening screw holes on the reference pressure plate. According to the drawing of spring, provide 1 set of tooling
Main technical parameters
| NO. | Project name | Parameters and indexes |
| 1 | Maximum capacity (Nm) | 100 Nm |
| 2 | measurement range of angle ( o ) | 80 |
| 3 | Test station | 1 |
| 4 | Frequency | 1-8Hz |
| 5 | Axial compression space | 150mm |
| 6 | Minimum resolution eccentricity adjustment | 0.05mm |
| 7 | Minimum resolution compression space | 0.01mm |
| 8 | Counter capacity | 1000000000 |
| 9 | Supply voltage | 380VAC 50Hz |
| 10 | Motor power | 7.5KW |
| 11 | Net weight | |
| 12 | Gross weight |
