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Extruder stepper motor?

This topic contains 13 replies, has 6 voices, and was last updated by  Anonymous 1 year ago.

1
citamrac aurf carmatic

Extruder stepper motor?

10/04/2018 at 23:45

is this a good option for the extruder screw motor? https://www.ebay.com/itm/86HS118-6004A14-B34-DC-Motor-DM860D-Stepper-Motor-Driver-256microstep-CNC-1KW/202267512082?hash=item2f18154d12:g:MscAAOSwqGlashdU

1kw with its own intergrated speed controller,the disadvantage being that it needs 24V~80V DC or 20V~60V AC to power it

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hero
11/04/2018 at 10:19
2

Hello @carmatic
Yes, a stepper motor will work but only for filament/cord extrussion, it will not work for more demanding things like making beams for instance. Even though it shows 1KW, I would never push the stepper that far.

There’s a German guy with a Youtube Channel named Werbewunder who has been playing around with using NEMA steppers for extrusion, more info here:

hero
11/04/2018 at 10:21
1

Also, for 124.44 Euros, I would rather purchase a 0.5hp motoreducer or a garage door opener motor that will work with 110v or 220v right away and already includes a reduction mechanism

starter
11/04/2018 at 20:22
1

the reason I am looking at a stepper motor is because I would like to have more control over the RPM
Using a regular motor would mean purchasing a variable frequency drive which costs as much as the motor itself

starter
16/04/2018 at 03:08
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I’ve never thought of steppers to be a good solution to variable speed applications. The torque changes with speed. Here’s a great data sheet that explains the problem:http://www.orientalmotor.com/stepper-motors/technology/speed-torque-curves-for-stepper-motors.html

hero
16/04/2018 at 21:14
1

@abraxas Correct. On the other hand, the stepper reduction gears are not intented to be used on high torque applications such as an extruder (not even titanium gear steppers). If the extruder gets clogged, your stepper gear teeth will most likely break instantly.

starter
23/04/2018 at 13:41
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does anyone have any data on just how much torque does the precious plastic extruder will require?

starter
23/04/2018 at 13:42
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On the other hand, the stepper reduction gears are not intented to be used on high torque applications such as an extruder (not even titanium gear steppers). If the extruder gets clogged, your stepper gear teeth will most likely break instantly

my understanding is that a stepper motor will skip when it is overloaded, long before any mechanical damage will occur to it?

hero
24/04/2018 at 10:33
1

@carmatic Steppers do skipping, but if they are high torque motors the gears might get damaged while skipping.

On regards of the extruder, there is not really a defined minimum torque, but I recommend you a minimum of 60N.m for extruding plastic wire, and a minimum of 350N.m for making beams

helper
06/06/2018 at 11:42
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to run a stepper on a exturder you need atleast 150kg.cm of torque so a newma 23 with a 5:1 reduction works. enjoy 🙂

new
04/09/2018 at 15:22
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Is there any formula to calculate the torque of stepper motor we need?
Does the type of plastic affect it or not?

new
04/09/2018 at 15:25
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I face the same proble. I use nema 23 but it doesn work. The torque is not enough to push the plastic out of the nozzle. So i want to know which stepper motor is capable to do extrusion with 5/9 inch screw

new
04/09/2018 at 22:06
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i have some Nema34s around, can’t be bigger, also have some 5:1 belts around, last time i used them on a 2 tonnes lathe (thread feed) : no problem. let me know, i can make some tests on a extrusion screw (was over due anyways).
should i ? nema 23 can be pretty powerful though

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