On Wed, 16 Apr 2008, Jon Elson wrote:
> Date: Wed, 16 Apr 2008 12:17:10 -0500
> From: Jon Elson <[EMAIL PROTECTED]>
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] brushless m
Kenneth Lerman wrote:
> Jon,
>
> I've tried to use combination drill/taps with my Tapmatic tapping head with
> similar breaking results. The problem seems to be that the tapping head
> allows for sideways float to that the tap will self align with an existing
> hole. That works great when you a
Peter C. Wallace wrote:
> Also you mentioned that you had some cogging. Is the resonance something that
> happens statically or only when moving at certain velocities? Is it possible
> that you have some non-linearity or even hysteresis in you drive - torque
> curve?
>
The first large motor I
John Kasunich wrote:
> Jon Elson wrote:
>
>>Peter C. Wallace wrote:
>>
>>>If you are just driving a bare motor, try raising your sampling rate...
>>
>>Geez, the resonance seems to be about 40 Hz, my sampling rate is
>>already 1 KHz, 25 X higher. But, yes, I can go to at least 5
>>KHz and see wh
MC)"
Sent: Tuesday, April 15, 2008 9:38 PM
Subject: Re: [Emc-users] brushless motors
> Chris Radek wrote:
>> On Tue, Apr 15, 2008 at 11:40:59AM -0500, Jon Elson wrote:
>>
>>
>>>Another topic... I want to try some rigid tapping a la the
>>>Mazak on my por
On Tue, 15 Apr 2008, John Kasunich wrote:
> Date: Tue, 15 Apr 2008 21:58:45 -0400
> From: John Kasunich <[EMAIL PROTECTED]>
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] bru
Jon Elson wrote:
> Peter C. Wallace wrote:
>> If you are just driving a bare motor, try raising your sampling rate...
> Geez, the resonance seems to be about 40 Hz, my sampling rate is
> already 1 KHz, 25 X higher. But, yes, I can go to at least 5
> KHz and see what happens.
>
> Jon
>
Do you h
Peter C. Wallace wrote:
>
> If you are just driving a bare motor, try raising your sampling rate...
Geez, the resonance seems to be about 40 Hz, my sampling rate is
already 1 KHz, 25 X higher. But, yes, I can go to at least 5
KHz and see what happens.
Jon
-
Chris Radek wrote:
> On Tue, Apr 15, 2008 at 11:40:59AM -0500, Jon Elson wrote:
>
>
>>Another topic... I want to try some rigid tapping a la the
>>Mazak on my portable mill and bring that to the Workshop.
>>Is there a sample G-code program or a program that creates the
>>G-code for that cycle?
On Tue, 15 Apr 2008, Jon Elson wrote:
> Date: Tue, 15 Apr 2008 11:40:59 -0500
> From: Jon Elson <[EMAIL PROTECTED]>
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: [Emc-users] brushless motor
On Tue, Apr 15, 2008 at 11:40:59AM -0500, Jon Elson wrote:
> Another topic... I want to try some rigid tapping a la the
> Mazak on my portable mill and bring that to the Workshop.
> Is there a sample G-code program or a program that creates the
> G-code for that cycle? I'm thinking of hooking m
Hello, gang,
I got a Giddings and Lewis brushless motor off eBay a while ago,
and finally got around to trying it with my brushless drive.
It is a SSM430 size 42 motor, rated at 30 Lb-In continuous
stall. I had to fool around with the commutation encoder
phasing to get it to work right, and th
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