The equipment covers multiple core testing scenarios and can achieve conventional locking torque testing, torque loading testing, and axial force loading testing for self-locking nuts. At the same time, it can complete key projects such as high locking torque testing, loosening torque testing, twisting torque testing, and pre tightening torque testing for self-locking nuts. Its unique pre tightening force unloading method has advantages. Without rotating the nut, the axial force can be smoothly unloaded through the self unloading device of the axial force sensor, effectively avoiding interference with the test sample and test data during the unloading process.

In terms of structural design, the equipment has been optimized for targeted testing adaptability and operational flexibility. The body is equipped with a three jaw chuck. During testing, simply fix the nut sample in a dedicated fixture, and then clamp the fixture in the three jaw chuck to complete the sample fixation. The operation is convenient and efficient. The core structure consists of a power device, an axial force unloading device, and a fixed clamp head. The axial force unloading device can be flexibly moved: when the device is not needed, it can be moved to the rear of the host without occupying the test operation space; When conducting the high lock nut test, simply move it between two three jaw chucks and clamp the sample to carry out the test, greatly improving the equipment's scene adaptation capability.

The equipment has multiple core testing features to ensure automation of the testing process and precision of data. In a single screw in and screw out test, simply screw the test bolt into the high lock nut locking position and install it on the equipment. After setting the relevant parameters, the equipment can automatically complete the entire process of screw in and screw out testing; When conducting the twisting torque test, the equipment will drive the high lock nut until its driving part is twisted, and automatically record and read the maximum torque during the twisting process, which is the twisting torque; In the pre tightening force test, the maximum force value displayed on the equipment axial force channel at the moment when the high lock nut breaks is the pre tightening force; The loosening force test is conducted after the pre tightening force test is completed. The axial load is removed by not rotating the nut, and then the nut is clamped. At this time, the maximum torque required to rotate the nut is the loosening torque. The entire process of the test has clear logic and accurate and traceable data.

As a precision testing machine, its key technical parameters perform excellently: the torque measurement range is 2-50Nm, the axial force measurement range is 0.5-50KN, and the torsional speed can be flexibly adjusted within the range of 0-25 revolutions per minute, ensuring precise adaptation under different testing conditions. At the same time, the equipment has the advantages of simple operation, precise control, and convenient maintenance, which can significantly reduce the learning cost of operators and improve testing efficiency. It is suitable for various scenarios such as laboratories and production quality inspections, and has become a powerful assistant for quality inspection of nut fasteners.