Testing bench for stalling torque of electric tool

Abstract

The invention relates to a test bed for measuring static stalling torque of an electric tool. The test bed comprises a stander, a motor workbench, an upright post, a linear stepping motor, a driving screw, a switch operating element, an inclinable clamping table, a three-dimensional workbench, a static sensor and a supporting seat, wherein, the upright post is fixed on the stander, and the motor workbench is arranged on the upright post, can move up and down on the motor workbench, and is clamped and fixed at a proper position; the linear stepping motor is fixed on the motor workbench, one end of the driving screw is connected with the linear stepping motor, and the other end of the driving screw is connected with the switch operating element; the three-dimensional workbench is fixed on the stander, one side of the inclinable clamping table is articulated with the three-dimensional workbench, and the middle of the bottom surface of the inclinable clamping table is provided with a lifting device which can be a jack; the table surface of the inclinable clamping table and the three-dimensional workbench form an included angle of 0-20 degrees; and the static sensor is fixed on the supporting seat which is fixed on the stander.

Description

technical field [0001] The invention relates to an electric tool testing device, in particular to an electric tool blocking torque test bench for measuring the static blocking torque of the electric tool. Background technique [0002] According to the safety standard requirements of electric tools, it is necessary to measure the stall torque when the motor is in a stall state. The existing test method is: install a chuck on the output shaft of the electric tool, connect a certain length of horizontally placed rigid lever through the chuck, press the switch, press the other end of the lever on the electronic scale or pull down the dynamometer, read The static impact force can be obtained, and the static locked-rotor torque can be calculated by using the leverage principle. The disadvantage of using this test method is that the dynamometer is prone to jitter due to the large impact and vibration during the start-up test of the electric tool, and it is difficult to read the ma...

AI Technical Summary

Problems solved by technology

The disadvantage of using this test method is that the dynamometer is prone to jitter due to the large shock and vibration during the start-up test of the electric tool, and it is difficult to read the magnitude of the instantaneous force, which affects the accuracy of the test data; and the rigid lever is blocked when the high-power tool is blocked. When the torque is large, bending will occur, which will change the arm of force and cause measurement errors

In addition, the existing locked-rotor test is a manual switch, and the fixture of the high-power tool is easy to fly out during the test, which has a large safety hazard

Images