In worm gears, the angle between the tangent to the thread helix on the pitch cylinder and the plane normal to the axis of worm is called
A. pressure angle
B. lead angle
C. helix angle
D. friction angle
Answer:B
In worm gears, the angle between the tangent to the thread helix on the pitch cylinder and the plane normal to the axis of worm is called
A. pressure angle B. lead angle C. helix angle D. friction angle