Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread Gene Heskett
On Tuesday 24 October 2017 15:20:33 jrmitchellj . wrote: > I am working on a Jet JTM-2 (Bridgeport clone from Taiwan). > Re-fitted with a 3hp 3ph spindle motor, and axis kits for motorizing > X, Y, & Z from Elrod Machine Works in Arizona. > Originally was going to build them myself, but thought

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread jrmitchellj .
I am working on a Jet JTM-2 (Bridgeport clone from Taiwan). Re-fitted with a 3hp 3ph spindle motor, and axis kits for motorizing X, Y, & Z from Elrod Machine Works in Arizona. Originally was going to build them myself, but thought about the hours required, and felt the Elrod kits were well

Re: [Emc-users] Ethercat master

2017-10-24 Thread Nicklas Karlsson
Maybe like $7 then connected via SPI with integrated driver. Integrated in micro controller is cheaper but then two drivers are required which increase price. For $1 - $3 it is possible to get good micro controller for control of hardware (servo motors), the more expensive is needed then

Re: [Emc-users] Ethercat master

2017-10-24 Thread Dave Cole
What is the cost of an Ethercat chip ? Dave On 10/24/2017 11:48 AM, Nicklas Karlsson wrote: Hardware for master is hard to find because you don't need it. Any normal Ethernet port works. Master is a software-only solution. Time triggered transmit would be useful to get perfect timing and

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread Gene Heskett
On Tuesday 24 October 2017 10:23:13 Peter C. Wallace wrote: > On Tue, 24 Oct 2017, John Kasunich wrote: > > Date: Tue, 24 Oct 2017 08:47:02 -0400 > > From: John Kasunich > > Reply-To: "Enhanced Machine Controller (EMC)" > > > > To:

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread Gene Heskett
On Tuesday 24 October 2017 09:54:23 jrmitchellj . wrote: > I would thin a 1HP drive should be able to plow through and thread a > 3.8" hole without much grief, especially in low gear. > I have the servo amp current limit set at around 15 amps, and I can hear it squeaking as it regulates under a

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread Gene Heskett
On Tuesday 24 October 2017 08:47:02 John Kasunich wrote: > On Tue, Oct 24, 2017, at 08:14 AM, andy pugh wrote: > > On 24 October 2017 at 12:10, Gene Heskett wrote: > > > Correct, except encoder.nn.velocity is fed thru a last 4 edges > > > averager to remove some of the

Re: [Emc-users] Ethercat master

2017-10-24 Thread Nicklas Karlsson
> Hardware for master is hard to find because you don't need it. Any normal > Ethernet port works. Master is a software-only solution. Time triggered transmit would be useful to get perfect timing and fully utilize bandwidth. > You can choose a simple less redundant network topology.

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread Gene Heskett
On Tuesday 24 October 2017 08:14:25 andy pugh wrote: > On 24 October 2017 at 12:10, Gene Heskett wrote: > > Correct, except encoder.nn.velocity is fed thru a last 4 edges > > averager to remove some of the noise in the encoders output. That > > unforch also affects the

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread Peter C. Wallace
On Tue, 24 Oct 2017, John Kasunich wrote: Date: Tue, 24 Oct 2017 08:47:02 -0400 From: John Kasunich Reply-To: "Enhanced Machine Controller (EMC)" To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] One final Q re using a dc

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread jrmitchellj .
I would thin a 1HP drive should be able to plow through and thread a 3.8" hole without much grief, especially in low gear. I have not set up my system for low range yet. Allot to think about on that. Still working on the basic system & bugs. I was just thrilled to get the speed indicator and

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread John Kasunich
On Tue, Oct 24, 2017, at 08:14 AM, andy pugh wrote: > On 24 October 2017 at 12:10, Gene Heskett wrote: > > > Correct, except encoder.nn.velocity is fed thru a last 4 edges averager > > to remove some of the noise in the encoders output. That unforch also > > affects the

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread andy pugh
On 24 October 2017 at 12:10, Gene Heskett wrote: > Correct, except encoder.nn.velocity is fed thru a last 4 edges averager > to remove some of the noise in the encoders output. That unforch also > affects the spindle to Z phaseing in the G33.1 backout. You might want to

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread Gene Heskett
On Tuesday 24 October 2017 04:45:14 andy pugh wrote: > On 24 October 2017 at 02:06, Gene Heskett wrote: > > So does anyone here have a working spindle "net" stanza that runs it > > in velocity mode via a PDM signal? One you can post? > > The type of spindle and how it is

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread Gene Heskett
On Tuesday 24 October 2017 03:18:43 jrmitchellj . wrote: > Hi Gene. > Here is the spindle stuff I got working on Sunday. > Not sure it is exactly what you are looking for, but it may spark some > ideas for you. > Also, it may still need some work! > > Ray > > --J. Ray Mitchell Jr. >

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread andy pugh
On 24 October 2017 at 02:06, Gene Heskett wrote: > > So does anyone here have a working spindle "net" stanza that runs it in > velocity mode via a PDM signal? One you can post? The type of spindle and how it is controlled has absolutely no bearing on how you do this. You

Re: [Emc-users] One final Q re using a dc spindle motor

2017-10-24 Thread jrmitchellj .
Hi Gene. Here is the spindle stuff I got working on Sunday. Not sure it is exactly what you are looking for, but it may spark some ideas for you. Also, it may still need some work! Ray --J. Ray Mitchell Jr. jrmitche...@gmail.com (818)324-7573 The dogmas of the quiet past, are inadequate to the