Method for dynamically checking the teeth of a part and checking device using said method

摘要

A method and device (10) for dynamically checking the teeth of a part (1) including a first motorized spindle (22), supporting the part (1) to be checked, is controlled by a first encoder (25), and a second motorized spindle (32), supporting a master pinion (2), is controlled by a second encoder (35). The two spindles (22, 32) are parallel and separated from one another with the master pinion (2) meshing with the part (1) to be checked. The master pinion (2) has a small thickness, compared to the part (1) to be checked, and the spindle (32) is mounted on a first carriage (43) which is movable in order to move the master pinion (2) along the profile of the teeth of the part (1) to be checked. This method and device allows characterizing both the radial defects and the angular defects of the teeth, and these defects being differentiated.

主权项

1. A method for dynamically checking teeth of a part (1) defined at least by its module, its nominal diameter and its tooth profile, the method comprising the steps of:
mounting the part (1) to be checked on a first motorized spindle (22) angularly controlled by a first encoder (25), mounting a master pinion (2) on a second motorized spindle (32) angularly controlled by a second encoder (35), arranging the two spindles parallel to one another and separating the two spindles by a center distance that allows the master pinion to mesh with the part to be checked, measuring angular deviations between the two spindles using the information supplied by the encoders, processing the information by a calculator and deducing possible defects of the teeth from these deviations, employing a master pinion (2) with a small thickness compared to the thickness of the part (1) to be checked so as to minimize the contact area of the teeth of the master pinion on the teeth of the part to be checked, when carrying out the measuring step, axially moving the master pinion (2) along a profile of the teeth of the part (1) to be checked, and extracting from the performed measurements both radial defects and angular defects of the teeth, and these defects being differentiated.