The drive unit of a positioning table for a component insertion machine is based on a stepping\nmotor and leadscrew mechanism. The specifications are f
The drive unit of a positioning table for a component insertion machine is based on a stepping
\r\nmotor and leadscrew mechanism. The specifications are for the table speed to be 25 mm/s over a
\r\n600 mm range and for the accuracy to be 0.025 mm. The pitch of the leadscrew = 4.5 mm, and the
\r\ngear ratio = 5:1 (5 turns of the motor for each turn of the leadscrew). The mechanical errors in the
\r\nmotor, gear box, leadscrew, and table connection are characterized by a normal distribution with
\r\nstandard deviation = 0.005 mm. Determine (a) the minimum number of step angles in the stepping
\r\nmotor, and (b) the frequency of the pulse train required to drive the table at the desired maximum
\r\nspeed for the stepping motor in part (a).