MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Gears

In a CNC feed...

Question

In a CNC feed drive, a stepper motor with step angle of 1.8 degree drives a lead screw with pitch of 2 mm. The basic length unit (BLU) for this drive is

A

100 microns

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

10 microns

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

40 microns

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

20 microns

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B 10 microns
Pitch=2 mm
Step angle $= {1.8}^{\circ} / p u l s e$
Distance travelled in one rev $(360^{\circ}) = 2 m m$
No.of pulses in $360^{\circ} = \frac{360}{1.8} = 200$ pulses
Distance travelled in one pulse $= \frac{2}{200} m m$
$= 0.1 m m \approx 10 μ m$

Suggest Corrections

thumbs-up

3

Similar questions

Q. Linked Answer Questions 8.20 and 8.21
In the feed drive of a Point-to-Point open loop CNC drive a stepper motor rotating at 200 steps/ rev drives a table though a gear box and lead screw-nut mechanism (pitch=4 mm, number of starts=1). The gear ratio
\(\left(=\dfrac{Output rotational speed}{Input rotational speed }\right)\) is given by \(U=\dfrac{1}{4}\).
The stepper motor (driven by voltage pulses form a pulse generator) executes 1 step/pulse of the pulse generator . The frequency of the pulse train from the pulse generator is \(f=10,000\) pulses per minute.

The Basic Length Unit(BLU), i.e., the table movement corresponding to 1 pulse of the pulse generator, is

Q. A stepper motor has 150 steps. The output shaft of the motor is directly coupled to a lead screw of pitch 4mm, which drives a table. If the frequency of pulse supply to motor is 200 Hz, the speed of the table (in mm/min) is

Q. A stepper motor of 300 steps per revolution is mounted on the lead screw of a drilling machine. The lead screw pitch is 5 mm. Then BLU of the system is _____.

Q. In the feed drive of a Point-to-Point open loop CNC drive a stepper motor rotating at 200 steps/ rev drives a table though a gear box and lead screw-nut mechanism (pitch=4 mm, number of starts=1). The gear ratio

(= \frac{O u t p u t r o t a t i o n a l s p e e d}{I n p u t r o t a t i o n a l s p e e d})

U = \frac{1}{4}

. The stepper motor (driven by voltage pulses form a pulse generator) executes 1 step/pulse of the pulse generator . The frequency of the pulse train from the pulse generator is

f = 10, 000

pulses per minute.

A customer insists on a modification to change the BLU of the CNC drive to 10 microns without changing the table speed. The modification can be accomplished by

Q. The total angular movement (in degrees) of a lead screw with a pitch of 5.0 mm to drive the work table by a distance of 20 mm in a NC machine is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard VI Physics

Join BYJU'S Learning Program

CrossIcon