1．NJS-100Introduction to electronic torsion test bench products

The electronic torsion testing machine is composed of a loading system, a transmission system, a data acquisition, processing, control, display system, etc., and is suitable for testing the mechanical properties of various torsional elastic elements, components, bolts, etc. The machine adopts a horizontal structure and is embedded with a high-performance single-chipCPUcontroller,240×128Dot matrix LCD display, fully Chinese operation and display interface, intuitive and easy to read display information, multi button operation, combined with Chinese display interface, making your operation simpler. Simply follow the habitual prompt interface sequence to complete system parameter settings. Display torque and torsion angle, and use a digital data acquisition card for data collection and processing. Adopting a worm gear reducer for transmission, it has the characteristics of uniform loading, stability, no impact phenomenon, and accurate data acquisition and control.

2．NJS-100Description of electronic torsion test bench scheme

【 Main 】 The machine adopts a horizontal structure, and the main structure adopts a frame casting structure to ensure the rigidity of the whole 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.

[Loading System] Manual loading is used.

The transmission system adopts a worm gear reducer to ensure uniform, stable and accurate transmission. lateral space0～300mmManually adjust within the range.

The measurement display system uses a photoelectric encoder to collect the torsion angle θ of the sample, and a high-precision output symmetrical torque sensor to collect the torque of the sampleTTorque of LCD display sampleTThe maximum torque, maximum torsion angle, torsional strength, shear modulus, etc. of the data processing specimen

3Main technical performance indicators

3．1 Maximum dynamic test torque: ±100Nm；

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～±3600⁰ （±3600⁰Any setting within the scope);

3．5Effective experimental space:300mm；（0～300mmAny manual adjustment within the range

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

3．7Coaxiality accuracy between two fixtures:300mmWithin the range of ≤Φ0.2mm

3．8Twist angle resolution:0.1⁰；

3．9Loading method: manual loading

3．10Voltage Voltage:AC220V 50Hz Power:20W

3．11Host size:1270×350×850（mm）

4Requirements for the working environment of the torsion 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 ± of the rated voltage10%.

5Configuration of torsion test bench

5．1One host

5．2The photoelectric encoder is produced by Shanghai Hode (a German company)

5．3 240×128Dot matrix LCD display data acquisition, control, and display system One set (self-developed)

5．4high precision100NmOne torque sensor——aerospace701Produced by

5．5One host (self-developed)

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

5．7Fixture: One set of standard fixtures (internal hexagonal connection form)