Technical requirements for high-precision couplings

High precisionCouplingThe technical requirements, test methods and inspection specifications of the company provide the basis for the design, manufacture and inspection of high-precision couplings.High-precision coupling is a device that connects the two shafts of the transmission mechanism in the transmission error and idle travel error of precision machinery.

The transmission error of the high-precision coupling is the difference between the actual rotation angle of the output shaft and the rotation angle of the output shaft when the input shaft of the coupling rotates in one direction, which is expressed by a code.

The idle travel error of the high-precision coupling, under the action of the specified torque, when the output shaft of the coupling changes from forward to reverse rotation, the amount of the output shaft on the angle of rotation is indicated by a code.Install an optical dial on the input shaft of the high-precision coupling, locate it with the help of a reading microscope, install a theodolite on the output shaft, and set a collimator at a distance as the aiming target of the theodolite telescope.

Rotate the input shaft through a certain angle and record the reading of the optical dial. At this time, the theodolite on the output shaft also rotates the corresponding angle, then turn the telescope of the theodolite back again, and re-aim the collimator and crosshairs. The rotation angle of the theodolite is the actual rotation angle of the output shaft, and the difference between the rotation angle and the theoretical rotation angle is the transmission error of the output shaft at that point.