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Author Topic: How much stepper power do a 1-1/2 HP Bridgeport need to do a good job ?  (Read 21208 times)

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Offline Hood

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Re: How much stepper power do a 1-1/2 HP Bridgeport need to do a good job ?
« Reply #10 on: September 20, 2012, 10:51:49 AM »
What RPM are you expecting to get with these motors?
I have not used steppers for a long time but I would say if you got 1000rpm you would be doing extremely well. At 10microsteps that would equate to 2,000,000 steps per min, so 33.333KHz which should be easily achievable on nearly any computer.

Losing torque due to microstepping is a new one on me but as said I havent used steppers for a long time and have forgotten the little I dd know about them.

Hood

Offline olf20

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Re: How much stepper power do a 1-1/2 HP Bridgeport need to do a good job ?
« Reply #11 on: September 20, 2012, 01:07:27 PM »
If you have not found this site yet, you might take a look at
it. Bob offers great service and is always free to give you
advise. http://www.homeshopcnc.com/index.php?page=shop.browse&category_id=1&option=com_virtuemart&Itemid=9999

olf20 / Bob
Mach3, Atlas Knee Mill, 4th Axis, VcarvePro, ESS, Super PID.
Been Heating with corn since 1998
Re: How much stepper power do a 1-1/2 HP Bridgeport need to do a good job ?
« Reply #12 on: September 20, 2012, 01:36:49 PM »
If you have not found this site yet, you might take a look at
it. Bob offers great service and is always free to give you
advise. http://www.homeshopcnc.com/index.php?page=shop.browse&category_id=1&option=com_virtuemart&Itemid=9999

olf20 / Bob



Bob?  His name is Rick LaLonde.

Regards,
Ray L.
Regards,
Ray L.

Offline RICH

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Re: How much stepper power do a 1-1/2 HP Bridgeport need to do a good job ?
« Reply #13 on: September 20, 2012, 05:42:05 PM »
Quote
Losing torque due to microstepping 

Yes you loose torque, but...............
You'll need to do some research,reading and digest, in the proper context of what is said by the experts, on that subject.
Not some generalized statement out of context being echoed . Since I  am not an expert i will keep from saying that
you'll loose 19% or so.  ???  ;)


RICH

Offline Hood

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Re: How much stepper power do a 1-1/2 HP Bridgeport need to do a good job ?
« Reply #14 on: September 20, 2012, 06:17:29 PM »
Been doing some reading on the losing torque with microstepping  and one very interesting comment was made by Mariss
"The page a little misleading. The table shows how much torque is required to push the motor 1 microstep out of position. The motor still develops its rated when it is one full step out of position. This is the same point a full stepped motor develops its rated torque.

 Mariss"


Hood


Re: How much stepper power do a 1-1/2 HP Bridgeport need to do a good job ?
« Reply #15 on: September 20, 2012, 06:22:36 PM »
The primary value of Micro-stepping is smoother operation, not necessarily higher precision.
Regards,
Ray L.
Re: How much stepper power do a 1-1/2 HP Bridgeport need to do a good job ?
« Reply #16 on: September 20, 2012, 06:26:42 PM »
Oh no.....  My Mach3 wont run no matter what.... I get the " External Estop Requested" message in the status line  . right now I only run the application without any milling stepper controller or machine connected so I dont have any external Estop I can press.... how do one get out of this loop please ?

Leif
« Last Edit: September 20, 2012, 06:32:49 PM by Gropper »
Software in use :

Mach3
Cambam
Cutviewer

Offline Hood

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Re: How much stepper power do a 1-1/2 HP Bridgeport need to do a good job ?
« Reply #17 on: September 20, 2012, 06:28:30 PM »
Change the active state of the E-Stop setting in Ports and Pins, Inputs page.
Hood
Re: How much stepper power do a 1-1/2 HP Bridgeport need to do a good job ?
« Reply #18 on: September 20, 2012, 07:01:20 PM »
Thanks Hood.....  It solved my problem.... :-)    Ill nip a little Scotch Whisky ..... You really saved my day...

All the best

Leif
Software in use :

Mach3
Cambam
Cutviewer

Offline olf20

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Re: How much stepper power do a 1-1/2 HP Bridgeport need to do a good job ?
« Reply #19 on: September 20, 2012, 07:02:12 PM »
You are correct Ray, I did forget his first name. He is a great guy!!
Helped me several times.
olf20 / Bob
« Last Edit: September 20, 2012, 07:04:16 PM by olf20 »
Mach3, Atlas Knee Mill, 4th Axis, VcarvePro, ESS, Super PID.
Been Heating with corn since 1998