Thread: Confused about stepper sizing
Threaded View
-
22-09-2017 #1
Hi
My mechanical build is almost complete 20mm HiWin rails and bearings on X & Y axes with 2010 lead screws X axis is 1500mm and Y axes are 1000mm. Total weight of my gantry including the spindle is around 40Kg and I've been trying to calculate what size motors I need for my axes, but both my own calculations, and the output from several online motor calculators are giving me results that I wasn't expecting.
For example on the Y axis with a total load of 40Kg and a cutting force of 5N my total required torque @ 80 rpm (800mm/min) is coming out with a figure of around 0.18Nm, this would easily be achievable with the 175oz Nema 23 stepper on the openbuilds store which should put out around 0.7 Nm @ 48v and 80 rpm.
My gut instinct was to go for motors in the 400+ oz range, which seems to be what everybody recommends for this sort of size machine. Are my torque calculations way off or is there another reason that I need to massively overspec my motors?Last edited by Jeff; 22-09-2017 at 01:49 PM.
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
Stepper and Drive sizing for Lathe Conversion
By Robotwizard in forum Stepper & Servo MotorsReplies: 0Last Post: 17-08-2016, 01:38 AM -
New Build Advise Ive Got Myself So Confused ! Please Help !
By grain_r in forum Gantry/Router Machines & BuildingReplies: 8Last Post: 26-07-2014, 01:21 PM -
help sizing toroidal PSU to stepper/drives
By paulus.v in forum General ElectronicsReplies: 13Last Post: 28-01-2014, 06:40 PM -
Confused need help!
By manofgresley in forum CAD & CAM SoftwareReplies: 12Last Post: 08-08-2012, 08:30 PM -
NEW MEMBER: New and confused!
By nicodemus in forum New Member IntroductionsReplies: 2Last Post: 10-07-2011, 12:12 AM
Bookmarks