.

Thread Friction Coefficient Test Bench

The PC controlled thread friction coefficient tester is mainly used to test the mechanical properties of bolts, screws and double-screw bolt made of carbon steel and alloy steel. This machine is applicable to the following situations: threaded fasteners effective torque, the evaluation test of clamping force and friction coefficient , new design, craft changing, material changing, goods supply identification, products quality inspection and so on. The test software interface uses virtual instrument technology in Windows environment, and it is user-friendly and easy to operate.

Standards
GB/T 16823.3-1997 Threaded fasteners-Tightening test method.
QC/T 715-2004 Test method for the friction coefficient of threaded joint used in car.
GB/T 3098.9-2002 Fastener mechanical performance effective torque type steel hexagon lock nut.

Features
·The full range of torque and full force is not split.
·The test data is stored in the database.
·After the test, the test data can be analyzed, such as automatic scaling, data display on every point.
·Interface uses virtual instrument technology. Test curve is displayed in analog oscilloscope display mode. The interface provides dynamic display and control of torque, twist angle and test curve.
·The twist angle can be arbitrarily set, and automatically maintain when reaching the set value.
·The tightening force can be arbitrarily set, and automatically maintain when reaching the set value .
·Maximum torque value and minimum torque holding function.
·Generate clamping force - torque diagram and twist angle - torque diagram.
·Enter the bolt diameter to participate in the strength value calculation. Automatically obtain mechanical performance indicators and print out a complete test report. Print data results to facilitate comprehensive analysis of a variety of test data .
·It can calculate the thread friction coefficient, supporting surface friction coefficient, effective torque.
·The calibration methods of torque, torsion Angle and force are simple and easy to operate.
·The control system adopts the templating design and the maintenance is convenient.
·It has overload protection and software setting protection.

Control System
The measurement control system adopts bus templating design. Each template achieves formalization and standardization design for functional units; High measurement accuracy, flexible configuration, strong interchangeability, easy to after-sales service.
Servo control adopts digital PID servo control technology, with two closed-loop control modes of displacement and load, which can be undisturbedly switched into each other.
The control system is made up of a standard computer (including the display and printer), IPC chassis, and the master template, torque amplification, A/D conversion template, template amplification template, load amplification measurement template, D/A conversion template and twist Angle counting templates.

Structure
The test machine consists mainly of test bed, slide track, static twist device, T type harness, load device, motion torsion device (100N. m), motor reducer and motion torsion device (500N.m), electrical control cabinet etc.



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