7.12In a CNC milling machine, the axis corresponding to the feed rate uses a DC servomotor asthe drive unit and a rotary encoder as the feedback sensing device. The motor is geared to aleadscrew with a 3:1 reduction (three turns of the motor for each turn of the leadscrew). Ifthe leadscrew pitch is 7.5 mm, and the encoder emits 100 pulses per revolution, determine(a) the rotational speed of the motor and (b) pulse rate of the encoder to achieve a feed rateof 200 mm/min.

rg=3:1 reductionp=pitch=7.5mm100 pulses/revfr=200mm/minTo-Find:-a. Rotational speedb. Pulse rate

In a CNC milling machine, the axis corresp the drive unit and a rotary encoder as the fe leadscrew with a 3:1 reduction (three turns the leadscrew pitch is 7.5 mm, and the enco (a) the rotational speed of the motor and (b of 200 mm/min.

In a CNC milling machine, the axis corresp the drive unit and a rotary encoder as the fe leadscrew with a 3:1 reduction (three turns the leadscrew pitch is 7.5 mm, and the enco (a) the rotational speed of the motor and (b of 200 mm/min.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

7.12
In a CNC milling machine, the axis corresponding to the feed rate uses a DC servomotor as
the drive unit and a rotary encoder as the feedback sensing device. The motor is geared to a
leadscrew with a 3:1 reduction (three turns of the motor for each turn of the leadscrew). If
the leadscrew pitch is 7.5 mm, and the encoder emits 100 pulses per revolution, determine
(a) the rotational speed of the motor and (b) pulse rate of the encoder to achieve a feed rate
of 200 mm/min.

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