Keling 4530 Steps Per unit?

[thinmint]

Does anyone have the steps per unit for the keling 4530?
The manual's numbers are completely incorrect.
I would email them, but I think its chinese new year and they wont be in for a while. Also my native units are inches if that makes a difference.

Thanks!

[keebler303]

It depends on your machine.

The motors are 200 steps per 1 revolution.
Are you using microstepping? I'm not familiar with the keling drives. For argument lets say they are using 1/8 microstep. That means that you have 200*8 steps per 1 motor revolution. So 1600 steps per revolution. Are you using acme screws? What is the lead? I'll guess its 5 TPI. That means you need 5 turns per inch. If your motor is coupled directly to the screw, you will need 5*1600 steps to get 5 motor revolutions which is one inch. So 8000 steps per inch. Obviously you can substitute the correct numbers for your setup and calculate the steps per inch yourself.

Post up some details of your machine if you need more help.

Matt

[thinmint]

This is the screw that the axis X axis moves on.
The X and Y axis have the same steps per unit
Are there 6 threads per inch? I think....
Also, how do I discern whether or not microstepping is turned on or not?

Here is the stepper motor for the X axis


ALSO just to throw this out there, I tried to calibrate the steps per unit using a the built in calibration tool in Mach 3.
Using this, I got 5385 steps per unit, however its not perfect... When I move the router 13 inches its usually off by a quarter inch or so

[Kelinginc]

Does anyone have the steps per unit for the keling 4530?
The manual's numbers are completely incorrect.
I would email them, but I think its chinese new year and they wont be in for a while. Also my native units are inches if that makes a difference.

Thanks!

Hi

We are located in USA

What did you buy from us?
check our new website
Automation Technologies Inc. | Stepper Motors, Servo Motors, CNC Stepper Motors, Stepper Drivers, CNC Kits, Stepper Kits Automation Technology Inc

[cabnet636]

keling sell motors drives and controlls, i have purchased many from them in chicago,, step resolution is not a set issue with any motor od drive from any where it is a calculation based on your set up at your machine,


try this

You command X to move 50 inches. It moves 40. You divide 50 (commanded) by 40 (actual) and get 1.25. Next you multiply that 1.25 by the R value in your file. That is your new R value.

[keebler303]

It looks like 5 TPI to me, 0.2" per revolution. It could also be 5mm lead though. You will need to measure more accurately to make sure it is one or the other. I made a chart to show you some poosible combinations based on microstep setting and screw pitch:

Steps per inch

microstepping setting / assumed .2" leadscrew / assumed 5mm leadscrew

full / 1000 / 1016
1/2 / 2000 / 2032
1/4 / 4000 / 4064
1/5 / 5000 / 5080

At this point, I'd guess you have a 5mm lead ballscrew and 1/5 microstepping. That would mean your steps per inch would be 5080. I don't see any Keling drives that have 1/5 microstepping so I'm not sure what you have going on.

Are the motors connected directly to the leadscrews?
What is the model number of your stepper drives?

Matt

[thinmint]

It looks like 5 TPI to me, 0.2" per revolution. It could also be 5mm lead though. You will need to measure more accurately to make sure it is one or the other. I made a chart to show you some poosible combinations based on microstep setting and screw pitch:

Steps per inch

microstepping setting / assumed .2" leadscrew / assumed 5mm leadscrew

full / 1000 / 1016
1/2 / 2000 / 2032
1/4 / 4000 / 4064
1/5 / 5000 / 5080

At this point, I'd guess you have a 5mm lead ballscrew and 1/5 microstepping. That would mean your steps per inch would be 5080. I don't see any Keling drives that have 1/5 microstepping so I'm not sure what you have going on.

Are the motors connected directly to the leadscrews?
What is the model number of your stepper drives?

Matt

Hey Matt

Thanks for the help

I really don't know what CNC machine it is, however it most nearly resembles a keling 4530. I purchased it off a man from craigslist who didn't know much about it. He gave me a flashdrive with a "how to set up mach 3" guide, which is the same as on kelings old website. However, the guide says 8000 are the steps per unit.

The motors are connected directly to the lead screws
Where would I locate the model of the stepper motors?
I will take pictures of anything !

[KOC62]

You showed the stepper picture in post #3. It is 57BYGH316.
Google showed this.. 57BYGH316
And this http://www.selectronic.fr/media/pdf/61574.pdf