In the case of the helical angle of the helical gear, what is the general angle of the spiral angle?
Then use a pen to clear a rolling mark extended, with a protractor to measure and calculate the angle of tooth diameter to see whether the error for anastomosis,...
1 when measuring, place a sheet of white paper on the table. Turn the better side of the gear tooth down and roll on the paper,
Measurement of helical angle of helical gear: the gear tooth shape to be measured is basically intact, or the top of tooth is uniform when worn,
