stepper motor replacement help needed

stepper motor replacement help needed

Postby swampies » Sat Sep 15, 2018 8:11 pm

I have decieded to replace my cheap chinese 3020 machine with a new build.
However I wish to use my current controller and Mach 3 settings as I still want to use my 3020 for fine work.
The steppers on the 3020 are nema 23's 57BYGH56-4017B x2 and a 57BYGH41-402B, Unfortunately I am not sure what steppers I can use to replace them and still keep the controllers settings.

The controller is a TB6600 stepper driver

The new machine will have a cutting area of 3ft x 2ft x 4inch

Any advice on steppers will be greatly appreciated as I dont have a clue about them.

Thanks

Scott
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Re: stepper motor replacement help needed

Postby ger21 » Sat Sep 15, 2018 8:25 pm

To answer that properly, you need to provide details of the drive system(s), how much weight you are moving, and how fast you want to move it.
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Re: stepper motor replacement help needed

Postby swampies » Sat Sep 15, 2018 8:42 pm

Thanks for the reply,

However I can not answer that as the machine is still in the design stage and everything revolves around getting the equivalent steppers to the originals. I dont want to have to get a new controller as I am trying to build on the cheap.
So need to keep original controller and settings so as to not have to keep messing around changing settings when switching between machines.

I dont need a machine thats fast, just one with a bigger cutting area. I 'm sick of using an area of 8in x 10in.

I intend to use BallScrew and I think they are called linear supported rails.
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Re: stepper motor replacement help needed

Postby ger21 » Sat Sep 15, 2018 8:54 pm

Those motors appear to be about 2.8amps, 175oz-in.

So anything in the 2.5-3amp range should work.

These would be similar to what you have. https://www.automationtechnologiesinc.c ... duplicate/
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Re: stepper motor replacement help needed

Postby swampies » Sat Sep 15, 2018 9:10 pm

Could I use a 57bygh56-401
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Re: stepper motor replacement help needed

Postby swampies » Sat Sep 15, 2018 10:11 pm

I've also spotted these 23HS8430B which are dual shaft

Step Angle
1,8°

Rated Voltage
3.0 V

Rated Current
3.0 A

Phase Resistance
1.0 Ohm/Phase

Phase inductance
3.5 mH/Phase

Holding Torque
1.9Nm

Detent Torque
6.0 N.cm Max

Rotor Torque
480 g- cm²

Lead Wires
4

Shaft Diameter
6,35 mm

Motor Length
76 mm

Motor Weight
1,05 kg

Lead Connection
Back - A+, Green - A-, Red - B+, Blue - B-
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Re: stepper motor replacement help needed

Postby swampies » Sun Sep 16, 2018 10:30 am

I've had an ordering frenzy.
So far I have ordered :
2 x 1200mm supported linear rails 20mm
1 x 1200mm ballscrew 16mm
2 x 750mm supported linear rails 16mm
1 x 750mm ballscrew 16mm
2 x 200mm MGN12 linear rails
1 x 200mm ballscrew 16mm
3 x 23HS8430B stepper motors.

The MGN12's might be a little too small but I will wait until the 200mm ballscrew turns up and have a prototyping session.
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