Static torque measuring device based on laser triangulation method, and using method

Abstract

The invention discloses a static torque measuring device based on a laser triangulation method. The static torque measuring device comprises an outer barrel and an input shaft, wherein the front and rear ends of the outer barrel are fixedly connected with a top cover and a flange disc respectively, an image processing module is fixed on the upper side of the outer barrel, a CCD camera and a semiconductor laser device are arranged in the outer barrel, a bearing seat a is fixed in the outer barrel and is close to the top cover, a bearing a is mounted on the bearing seat a, a bearing seat b is fixed on the inner barrel wall of the right portion of the outer barrel, a bearing b is mounted on the bearing seat b, the input shaft penetrates through the bearing a and the bearing b to penetrate through the outer barrel, a clamping ring is fixed on the input shaft, a displacement measuring arm is arranged in the outer barrel, fixedly connected with a measured shaft through the clamping ring androtates along with the measured shaft, and a reflecting mirror is installed at the end of the displacement measuring arm, has high resolution and precision, can carry out zero calibration at any time,can carry out forward and reverse on-line testing, and is particularly suitable for being used under the conditions of large shaft diameter, high rigidity and particularly small torsion angle.

Description

technical field [0001] The invention belongs to the technical field of measuring devices, in particular to a static torque measuring device based on laser triangulation. Background technique [0002] Torque measuring devices are widely used in the field of machinery and automation, especially in the field of input and output torque measurement of robot reducers. An important physical quantity and therefore crucial for torque measurement. Existing torque measuring devices and methods mainly include three types: strain type, angle type and magnetic elastic type. These three methods have their defects. The accuracy, service life and working reliability of the first method will be affected by factors such as humidity, temperature, vibration, etc.; The torsional deformation angle is very small, and the measurement accuracy of the small deformation angle of the rotating shaft will greatly limit the accuracy of torque measurement; the third method is easily affected by on-site ...

AI Technical Summary

Problems solved by technology

These three methods have their defects. The accuracy, service life and working reliability of the first method will be affected by factors such as humidity, temperature, vibration, etc.; The torsional deformation angle is very small, and the measurement accuracy of the small deformation angle of the rotating shaft will greatly limit the accuracy of torque measurement; the third method is easily affected by on-site electromagnetic interference, has poor reliability, poor anti-interference ability, and limited measurement accuracy

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