CNC Stepper Motor Rapids - Configuring the Max Speed for each Axis

[@LyonsArcade]

Thank you sir, this was very helpful. I appreciate you taking the time to film it, now i'm going to go see your other videos and see what parts you used.

[@mohamed_fawzy]

try and error method never let you down .. keep awesome ❤️

[@jims11762]

I didn’t see any proximity switches? I also noticed you have stop blocks. Would love to here your thoughts on this. I have a Desktop pro model with all the proximity switches but I guess it would run fine with out all that. I did add some stops in case proximity switch would fail. Never has yet to fail. Great video thank you for sharing.

[@buildbug3979]

My design uses 5 inductive proximity sensors (without any separate limit switches). In Mach4 I've configured the proximity switches to act like limit switches in that when any of the proximity sensors fire all motion stops (also I always enable soft limits which should prevent me from ever getting close to the proximity sensors). My only regret is that I'm using normally open proximity switches because I could not source normally closed versions cheaply (N.C. sensors would be safer). While setting up the machine I did hit the physical end stops once so I was glad they were there, they prevented the gantry from taking a disastrous trip to the floor.

[@MrJesus4194]

When stalling the y axis, did one side stall while the other moved a little more, their by causing the gantry to go out of square?

[@muneeburrehman450]

what about torque and speed curve. i have nema 23 on my machine one for each axis. every thing works at 3000 mm per minut but motor torque drops rapidly. 1500 mm per minute is fine but, only for contnuous motion , motors stall during acceleration when manually jogged.

[@PhoKingLitMedia]

Awesome machine!, Did you build this or did you purchase it? Ive been looking at different designs in preparation for an update. If you can share any information with me about your machine I would greatly appreciate it. it.

[@JoniPonsen13]

this use helicar rack gear or straight ?

[@mastercat]

hi what microsteps you have set?

[@frankbonheure7064]

I've build a monster cnc but simple question. Does the driver settings corelate with mach3? I mean by that, if i set stepper driver to let say 5000 pulses, what do i set mach3 for then? I manage to get only 150 rpm out of my motor. Thanks for a reply. Update: fount my problem. I needed to change the settings on the drivers to a lower Amp setting and now i can do 980 rpm. Torque is lower to thou.

[@jonml3352]

👌👊🏼👊🏼

[@cryptojunkie5875]

Thanks for sharing this content with us.

[@Mr_Wh1]

It makes sense to ship the machine with rather slow movements to hobbyist and "amateurs". It's not hard to imagine to kind of accidents and bodily harm the high speed movement could cause.

[@VortexMotiveVision]

Very helpful, thanks. Can you give an estimate for the mass, in Kg, being carried on each axis? The fact that direct driving hits the limit quicker, even on lower loads is intriguing, and something I will definitely keep in mind on my camera motion control project.

[@amrmusa7217]

I just want you to show us who to make a tool change That would be really helpful

[@ennaiarindhal3141]

Max speed when milling??

[@MrBrettStar]

How are you finding these speeds after a couple of years?

[@rchavez101]

Great video. Can you tell me where you bought the green plugs for the holes on the linear rails?

[@rchavez101]

A link would be appreciated. I can't seem to find them anywhere. I asked AVID CNC but got no reply.

[@buildbug3979]

@@rchavez101 The caps came with the linear rail that I bought from motionconstrained.com/ . I'm not sure if they sell the just the caps. 3D printing might be an option if they're hard to find.

[@michaelwade897]

Not sure what voltage you have running the stepper driver, but the higher the voltage the faster the rapids. But don't exceed the mfg max voltage. You'd be better of with closed loop stepper than open loop.

[@jonml3352]

6:25 I would like to know the same question.

[@abdennour183]

if you used Closed Loop Stepper Motors you will not lose steps, even at the fastest speed

[@luissantosist1]

What spindle are you using on this cnc machine and what bracket mount ?

[@buildbug3979]

It's a generic Chinese 2.2kW sprindle www.buildyourcnc.com/item/spindle-inverter-2!2kw-spindle-novfd

[@MrBrettStar]

Do the speeds vary once they have load or is that why you back it off 25% to compensate for the load?

[@buildbug3979]

We back off to have a safety margin for the loads the cutting will produce. If the speed or the load gets too high we will loose steps and that's never good. It's a balance of many factors; how rigid is the machine, how much power does the spindle have, how aggressive are your cuts. I backed off quite a bit because I'm new to CNC milling and I don't want to break stuff. Perhaps I can speed things up when I get more comfortable.

[@ricardozxz]

Hi, my motor max speed 1000mm/ min why? Beutifull your machine.

[@williamhuang5329]

Hanzhen harmonic drive gear , industrial robot arm gear reducer

[@tonyt8807]

Where did you get the gear track?

[@buildbug3979]

www.avidcnc.com/pro-gear-rack-52-p-239.html?osCsid=qpon0sstscsk5rlejgvi2uqai0

[@gaspermandelc7960]

Great video... The speed limit for your system is not in the torque of the motor, it is the rpm of the stepper. The nema 34 goes way faster, if you don't reduce the rpm trough pulleys :) Also on the Z axis, if you change the pitch of the screw you can increase the speed. If you disengage the pinion from the rack you won't go much faster, because all the torque of the stepper motor is in the low rpm. Once you go faster than lets say 1200 rpm you loose all torque.

[@pragatmudra8372]

Thanks for making a valuable comment... What about nema 24 and nema 32

[@strikermed]

Thanks for the tuning lesson. I’m curious what you used for your gantry. Is that 80/20 I see there? Also, did you manufacture your own parts or was this a kit/parts search you used to build it? I ask because eventually I want to build one of that size. Currently I have a small plywood rig I’m just now getting I to the tuning phase.

[@buildbug3979]

The details of my machine can be found here kzbin.info/www/bejne/o3ixm5ijbLOal80

[@jarisipilainen3875]

6:32 kinda sameway and magic is you can go poke them too xD

[@samirpasic6836]

Is this avid cnc?

[@buildbug3979]

No, it's a shop built clone of their PRO CNC 4x4 machine. It does use a lot of their parts however. I really like their stuff and would not hesitate to buy one of their machines. Building your own is pain, only do it if you're interested in learning and enjoy a frustrating challenge.

[@kenf2662]

When you lost steps with the motors it felt like fingernails on a chalkboard.

[@JF32304]

I'd rather have accuracy than speed.

[@20vtmk1]

This is setting the maximum speed to be used for rapid traversing. That is to say, the speed at which the gantry moves when you *are not* cutting.

[@wayneshephard]

Very interesting, not an exact science, hence I cannot find settings for mine :)