Threaded View
-
12-01-2010 #1
Hello all, being trying to work out what motors i require and work back from there.
Used the Motorcalc sheet but the numbers do not look right or i can not make sense of the output. Can some help?
It will be a dual screw machine made from steel. I have inputted the Worst case data. I think.
My question is, how do I interpret this into the correct motor? since i was going to have two motors for the longest axis do i factor this in by halfing the max load?
Looking forward to getting some parts and starting a build log.
INPUTS
Load Calculations
Mass of Load 25 kg
Friction co-efficient 0.01
Cutting forces 5 N
Leadscrew calculations
Screw pitch 6 mm
Screw dia 20 mm
Screw length 1500 mm
Screw minor dia 18 mm
Screw efficiency 30% %
Screw Fixing Fixed-free
Max linear speed 1200 mm/min
Acceleration time 0.02 sec
Screw mass 3.676 kg
Screw inertia 1.838E-04 kgm^2
Total Inertial load 2.066E-04 kgm^2
Critical Speed 1486 rpm
Motor revs 200 rpm
20.944 rads/sec
Acceleration torque 0.216 Nm
Total Torque 0.240 Nm
at 667 steps/sec
Motor Power 5.030 W
Required Motor 7.55 W
per phase 3.77 W
(bipolar halfstep)
rotor inertia > 2066 gcm^2
Thread Information
Users Browsing this Thread
There are currently 3 users browsing this thread. (0 members and 3 guests)
Similar Threads
-
Holding down sheet material.
By jcb121 in forum Machine DiscussionReplies: 3Last Post: 03-07-2013, 12:11 AM -
How to cnc cut 1-2mm stainless sheet ??
By Ricardoco in forum Metalwork DiscussionReplies: 9Last Post: 28-03-2013, 04:06 AM -
THC lifting off sheet?
By lockyg in forum Machine DiscussionReplies: 2Last Post: 06-12-2012, 04:56 PM -
3mm sheet brass
By cropwell in forum Marketplace DiscussionReplies: 1Last Post: 17-10-2012, 09:55 AM -
Motorcalc sheet ...
By Wobblybootie in forum General DiscussionReplies: 2Last Post: 13-01-2010, 06:27 PM
Bookmarks