振り振動計を応用した小形歯車かみ合い試験機

抄録

According to the principle that the mesh error of a pair of gears can be measured by subtracting the irregurarity of rotation of one gear from that of another gear, a single flank mesh tester of minilature gears is produced by applying a torsional vibrometer of long natural period and small size.
This tester can measure the mesh error of the gears with 0150mm center distance and face width of 030mm. Two torsional vibrometers of the same type are used, each of which is 80φ × 90 large, 800g weight and has 4s natural period. The total sensibility from vibrometer to recorder, where the signal is electrically amplified, is 10^-4rad mm (20''/mm). In order to investigate the reliability of the tester for measuring the gear mesh error of miniature gears, the mesh test of the gears with known errors is proceeded, and it is found that the mesh error can be obtained with good exactness provided that tooth contact is not apart by taking the load of gears effectively large or by lowering the angular velocity and that the mesh period of time is at most half the natural period of vibrometer. Few examples of mesh test of small size gears obtained by this tester are shown in this paper.