Re: [Emc-users] Lathe Threading

2014-05-19 Thread Ralph Stirling
cticalmachinist cnc forum too. -- Ralph From: andy pugh [bodge...@gmail.com] Sent: Monday, May 19, 2014 2:06 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Lathe Threading On 19 May 2014 08:27, Dave Caroline wrote: > The ramps are es

Re: [Emc-users] Lathe Threading

2014-05-19 Thread andy pugh
On 19 May 2014 08:27, Dave Caroline wrote: > The ramps are essential for full strength as they remove the need for > a safety groove You don't need a safety groove anyway with a conventional threading operation, the retract move seems consistent. I am prepared to believe that a taper-out might gi

Re: [Emc-users] Lathe Threading

2014-05-19 Thread Dave Caroline
The ramps are essential for full strength as they remove the need for a safety groove Dave Caroline On 19/05/2014, Steve Blackmore wrote: > On Sun, 18 May 2014 12:45:08 -0700, you wrote: > >>I'm still not seeing why G76 has a entry and exit ramp. I believe the >>intent was to deal with Z acceler

Re: [Emc-users] Lathe Threading

2014-05-18 Thread Steve Blackmore
On Sun, 18 May 2014 12:45:08 -0700, you wrote: >I'm still not seeing why G76 has a entry and exit ramp. I believe the >intent was to deal with Z acceleration time where the helix is not valid >at the start (and I assume the end) of synchronized motion. Normally, >one would start the thread off

[Emc-users] Lathe Threading

2014-05-18 Thread Kirk Wallace
I'm still not seeing why G76 has a entry and exit ramp. I believe the intent was to deal with Z acceleration time where the helix is not valid at the start (and I assume the end) of synchronized motion. Normally, one would start the thread off the part enough to have the Z and spindle locations

Re: [Emc-users] Lathe Threading

2012-06-12 Thread Brian May
jumpers on the Mesa card has to correspond to the encoder type > >>>> (differential line driver or TTL) otherwise nothing will work right. > >>>> > >>>> Dave > >>>> > >>>> > >>>> > >>>> On 6/9/2012

Re: [Emc-users] Lathe Threading

2012-06-11 Thread Dave
TTL >>>> outputs. >>>> >>>> The jumpers on the Mesa card has to correspond to the encoder type >>>> (differential line driver or TTL) otherwise nothing will work right. >>>> >>>> Dave >>>> >>>> >>>

Re: [Emc-users] Lathe Threading

2012-06-11 Thread Dave
s on the Mesa card has to correspond to the encoder type >>>> (differential line driver or TTL) otherwise nothing will work right. >>>> >>>> Dave >>>> >>>> >>>> >>>> On 6/9/2012 3:08 PM, Peter C. Wallace wrote: >&

Re: [Emc-users] Lathe Threading

2012-06-11 Thread Brian May
rs on the Mesa card has to correspond to the encoder type >>> (differential line driver or TTL) otherwise nothing will work right. >>> >>> Dave >>> >>> >>> >>> On 6/9/2012 3:08 PM, Peter C. Wallace wrote: >>>> On Sat, 9 Ju

Re: [Emc-users] Lathe Threading

2012-06-11 Thread John Thornton
hing will work right. >> >> Dave >> >> >> >> On 6/9/2012 3:08 PM, Peter C. Wallace wrote: >>> On Sat, 9 Jun 2012, Brian May wrote: >>> >>> >>>> Date: Sat, 9 Jun 2012 12:21:08 -0600 >>>> From: Brian May >>>

Re: [Emc-users] Lathe Threading

2012-06-11 Thread Brian May
9 Jun 2012 12:21:08 -0600 > >> From: Brian May > >> Reply-To: "Enhanced Machine Controller (EMC)" > >> > >> To: "Enhanced Machine Controller (EMC)" > > >> Subject: Re: [Emc-users] Lathe Threading > >> > >> Low

Re: [Emc-users] Lathe Threading

2012-06-11 Thread Dave
. Wallace wrote: > On Sat, 9 Jun 2012, Brian May wrote: > > >> Date: Sat, 9 Jun 2012 12:21:08 -0600 >> From: Brian May >> Reply-To: "Enhanced Machine Controller (EMC)" >> >> To: "Enhanced Machine Controller (EMC)" >> Subject:

Re: [Emc-users] Lathe Threading

2012-06-11 Thread dave
e: Sat, 9 Jun 2012 12:21:08 -0600 >>> From: Brian May >>> Reply-To: "Enhanced Machine Controller (EMC)" >>> >>> To: "Enhanced Machine Controller (EMC)" >>> Subject: Re: [Emc-users] Lathe Threading >>> >>> Low

Re: [Emc-users] Lathe Threading

2012-06-09 Thread Brian May
anced Machine Controller (EMC)" > > > > To: emc-users@lists.sourceforge.net > > Subject: Re: [Emc-users] Lathe Threading > > > > On Saturday, June 09, 2012 04:11:29 PM Brian May did opine: > > > >> Low Level is 220mv > >> High

Re: [Emc-users] Lathe Threading

2012-06-09 Thread Peter C. Wallace
On Sat, 9 Jun 2012, gene heskett wrote: > Date: Sat, 9 Jun 2012 16:15:45 -0400 > From: gene heskett > Reply-To: "Enhanced Machine Controller (EMC)" > > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] Lathe Threading > > On Saturday, June

Re: [Emc-users] Lathe Threading

2012-06-09 Thread gene heskett
an May > > > Reply-To: "Enhanced Machine Controller (EMC)" > > > > > > > > > > > > To: "Enhanced Machine Controller (EMC)" > > > > > > > > Subject: Re: [Emc-users] Lathe Threading > > > > > >

Re: [Emc-users] Lathe Threading

2012-06-09 Thread Brian May
I do not have anything connected to classicladder now. I can see the index (In hal scope) when jogging the axis slowly. (By slowly I mean 4RPM). Any faster, the index is not consistent. On Sat, Jun 9, 2012 at 1:48 PM, andy pugh wrote: > On 9 June 2012 18:00, Brian May wrote: > > > So now I h

Re: [Emc-users] Lathe Threading

2012-06-09 Thread andy pugh
On 9 June 2012 18:00, Brian May wrote: > So now I have the encoder using the hostmot driver and also the Z Pulse > being read by the encoder component.  I turned the spindle on at 120RPM and > expected to read the counter of the encoder component counting 2 counts > every second.  It did not, It

Re: [Emc-users] Lathe Threading

2012-06-09 Thread sam sokolik
ly-To: "Enhanced Machine Controller (EMC)" >> >> To: "Enhanced Machine Controller (EMC)" >> Subject: Re: [Emc-users] Lathe Threading >> >> Low Level is 220mv >> High Level 3.12 Volts > > Well thats valid TTL so OK (as long as the 7I3

Re: [Emc-users] Lathe Threading

2012-06-09 Thread Peter C. Wallace
On Sat, 9 Jun 2012, Brian May wrote: > Date: Sat, 9 Jun 2012 12:21:08 -0600 > From: Brian May > Reply-To: "Enhanced Machine Controller (EMC)" > > To: "Enhanced Machine Controller (EMC)" > Subject: Re: [Emc-users] Lathe Threading > > Low Level i

Re: [Emc-users] Lathe Threading

2012-06-09 Thread Brian May
> > > > To: "Enhanced Machine Controller (EMC)" > > > Subject: Re: [Emc-users] Lathe Threading > > > > I looked at the configuration CHNC and it looks the same. > > > > I followed andy's advice and found that the z-pulse is on pin 4. So

Re: [Emc-users] Lathe Threading

2012-06-09 Thread Brian May
> Reply-To: "Enhanced Machine Controller (EMC)" > > > > To: "Enhanced Machine Controller (EMC)" > > > Subject: Re: [Emc-users] Lathe Threading > > > > I looked at the configuration CHNC and it looks the same. > > > > I followed

Re: [Emc-users] Lathe Threading

2012-06-09 Thread Peter C. Wallace
On Sat, 9 Jun 2012, Brian May wrote: > Date: Sat, 9 Jun 2012 11:00:22 -0600 > From: Brian May > Reply-To: "Enhanced Machine Controller (EMC)" > > To: "Enhanced Machine Controller (EMC)" > Subject: Re: [Emc-users] Lathe Threading > > I looked at

Re: [Emc-users] Lathe Threading

2012-06-09 Thread Dave
Sounds like you need a new encoder. I've seen encoders break like that - they get intermittent. I have no idea why. Dave On 6/9/2012 1:00 PM, Brian May wrote: > I looked at the configuration CHNC and it looks the same. > > I followed andy's advice and found that the z-pulse is on pin 4. So I

Re: [Emc-users] Lathe Threading

2012-06-09 Thread Brian May
I looked at the configuration CHNC and it looks the same. I followed andy's advice and found that the z-pulse is on pin 4. So I connected pin 4, (Z Pulse) to an encoder component A phase (encoder.0). Then set the encoder component to counter mode. So now I have the encoder using the hostmot driv

Re: [Emc-users] Lathe Threading

2012-06-09 Thread John Thornton
I have my CHNC lathe converted using 5i20 7i33 7i77 and all the wiring of the cards and my config files are here if you want to compare notes. http://gnipsel.com/shop/hardinge/hardinge.xhtml John On 6/8/2012 8:39 PM, Brian May wrote: > I am having trouble setting up threading on my lathe. At t

Re: [Emc-users] Lathe Threading

2012-06-08 Thread Brian May
Ok i will try that tomorrow... Sent from my iPod On Jun 8, 2012, at 8:58 PM, andy pugh wrote: > On 9 June 2012 03:23, Brian May wrote: > >> I do not see in hal a index pin for the 5i20 component. > > You won't see it as a named pin, but all the function pins are also > available as gpio. > S

Re: [Emc-users] Lathe Threading

2012-06-08 Thread Dave
Brian, You might want to change the mode of the counter in the Mesa card to a single channel counter (non quadrature) and hook the index pulse to that channel. Then see if the Index pulse is counting reliably - 1 count per rev. (I think you can change that Mesa card to a single channel counte

Re: [Emc-users] Lathe Threading

2012-06-08 Thread andy pugh
On 9 June 2012 03:23, Brian May wrote: > I do not see in hal a index pin for the 5i20 component. You won't see it as a named pin, but all the function pins are also available as gpio. So, in dmesg after booting into the config you will see a list of all the function pins, and their corresponding

Re: [Emc-users] Lathe Threading

2012-06-08 Thread gene heskett
On Friday, June 08, 2012 10:21:38 PM Brian May did opine: > I am having trouble setting up threading on my lathe. At this point I > am thinking my spindle encoder is bad. I have the following setup in > my HAL File: > > net spindle-revs hm2_[HOSTMOT2](BOARD).0.encoder.01.position > motion.spind

Re: [Emc-users] Lathe Threading

2012-06-08 Thread Brian May
It is wired up. I don't really know how to see if it is working.. I tried connectimg it to a io port and create a latching circuit in classicladder to see if it was sending a signal. I turned the encoder by hand and it would latch the circuit every few turns. I may have had a timing issue...

Re: [Emc-users] Lathe Threading

2012-06-08 Thread andy pugh
On 9 June 2012 02:39, Brian May wrote: > Am I missing something simple? Is the encoder index channel wired up and working? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Live Security

[Emc-users] Lathe Threading

2012-06-08 Thread Brian May
I am having trouble setting up threading on my lathe. At this point I am thinking my spindle encoder is bad. I have the following setup in my HAL File: net spindle-revs hm2_[HOSTMOT2](BOARD).0.encoder.01.position motion.spindle-revs net spindle-vel-fb scale.0.in motion.spindle-speed-in hm2_[HOST

Re: [Emc-users] Lathe threading

2010-02-17 Thread Dave
>>battled with other "popular and cheap" software for many years (of frustration) I was waiting on lathe threading with Brand M software for a couple of years. Many are still waiting. But when version 4 of Brand M software comes out, the earth will quake, biblical revelations will occur, and

Re: [Emc-users] Lathe threading

2010-02-16 Thread Rudy du Preez
Andy Thanks very much for the info on setup for lathe threading, and for the link to a lot more info on the subject. I got the setup going within a few minutes after reading your proposals. The only extra thing I did was to put the input pin from my one-pulse-per- rev sensor on both the phase-A a

Re: [Emc-users] Lathe Threading Issues

2009-04-26 Thread Jon Elson
Kirk Wallace wrote: > If it makes any difference, I was cutting air, but I can imagine that > there are other hardware load sources. Ok, well, that excuses the spindle. It seems that the peak error was .0005", so I wouldn't get too concerned about it. You could look to see if the INPUT to the Z d

Re: [Emc-users] Lathe Threading Issues

2009-04-26 Thread Kirk Wallace
On Sun, 2009-04-26 at 11:33 -0500, Jon Elson wrote: > Kirk Wallace wrote: > > This is what I got with 2.3.0 and the previous threading sample with > > 4=0.08333 at 400 RPM: > > > > http://www.wallacecompany.com/machine_shop/HNC/HALscope_2.3_threading.png > > > > Previous (2.2.8): > > > > http://ww

Re: [Emc-users] Lathe Threading Issues

2009-04-26 Thread Jon Elson
Kirk Wallace wrote: > This is what I got with 2.3.0 and the previous threading sample with > 4=0.08333 at 400 RPM: > > http://www.wallacecompany.com/machine_shop/HNC/HALscope_2.3_threading.png > > Previous (2.2.8): > > http://www.wallacecompany.com/machine_shop/HNC/4at08-2.png > > 2.3.0 seems

Re: [Emc-users] Lathe Threading Issues

2009-04-25 Thread Kirk Wallace
On Wed, 2009-04-22 at 18:38 -0500, Chris Radek wrote: > On Wed, Apr 22, 2009 at 02:04:55PM -0700, Kirk Wallace wrote: > > > > I tend to think my threading problem is due to the "relay runner" > > effect > > I think so too - sure looks nasty though. I bet you will have much > better luck with 2.3

Re: [Emc-users] Lathe Threading Issues

2009-04-22 Thread Jon Elson
Kirk Wallace wrote: > I tend to think my threading problem is due to the "relay runner" > effect, but just in case it might be helpful. I tried the above on my > HNC. This didn't seem to change much. > > This is the before, with 4=0.08333: > http://www.wallacecompany.com/machine_shop/HNC/4at08

Re: [Emc-users] Lathe Threading Issues

2009-04-22 Thread Kirk Wallace
On Wed, 2009-04-22 at 18:38 -0500, Chris Radek wrote: > On Wed, Apr 22, 2009 at 02:04:55PM -0700, Kirk Wallace wrote: > > > > I tend to think my threading problem is due to the "relay runner" > > effect > > I think so too - sure looks nasty though. I bet you will have much > better luck with 2.3

Re: [Emc-users] Lathe Threading Issues

2009-04-22 Thread Chris Radek
On Wed, Apr 22, 2009 at 02:04:55PM -0700, Kirk Wallace wrote: > > I tend to think my threading problem is due to the "relay runner" > effect I think so too - sure looks nasty though. I bet you will have much better luck with 2.3 (this effect is why I rewrote the threading sync.) --

Re: [Emc-users] Lathe Threading Issues

2009-04-22 Thread Kirk Wallace
On Mon, 2009-04-20 at 20:56 -0500, Jon Elson wrote: ... snip > That is in the univpwm_load.hal file, the line I have reads : > > loadrt [EMCMOT]EMCMOT base_period_nsec=[EMCMOT]BASE_PERIOD > servo_period_nsec=[EMCMOT]SERVO_PERIOD > traj_period_nsec=[EMCMOT]SERVO_PERIOD key=[EMCMOT]SHMEM_KEY > > Yo

Re: [Emc-users] Lathe Threading Issues

2009-04-20 Thread John Kasunich
Kirk Wallace wrote: > > I wonder if Harris' rapid is fast enough to get across the thread, where > in my tests I got half way (4=0.08333) before the HNC tried to correct > the rate? If I used 4=0.120 I might have gotten the same result, since > decreasing 4 also reduced the effect. > As I mentio

Re: [Emc-users] Lathe Threading Issues

2009-04-20 Thread Kirk Wallace
On Mon, 2009-04-20 at 20:56 -0500, Jon Elson wrote: ... snip > One other thing We found this change > to be MOST helpful for rigid tapping, but I believe it ALSO is very > helpful in any threading operation. That was to increase the trajectory > planner's dispatch rate (TRAJ_PERIOD) to equ

Re: [Emc-users] Lathe Threading Issues

2009-04-20 Thread Jon Elson
Kirk Wallace wrote: > > > I think in my case at least, I'm asking for impossible accelerations. > When I looked at this before: > > http://www.wallacecompany.com/cnc_lathe/HNC/emc2/spindle_sync_surge-1b.png > > I decided to allow enough lead-in to have the Z settle before cutting. > > Well, the

Re: [Emc-users] Lathe Threading Issues

2009-04-17 Thread Kirk Wallace
On Fri, 2009-04-17 at 11:38 -0500, Jon Elson wrote: > Kirk Wallace wrote: > > Whatever it is, it looks like I have it too. I ran the long version four > > times with #4=0.050 without any problems. Then before shutting down for > > the night, I ran one part at #4=0.08. At the start of the thread

Re: [Emc-users] Lathe Threading Issues

2009-04-17 Thread John Kasunich
Kirk Wallace wrote: > > Whatever it is, it looks like I have it too. I ran the long version four > times with #4=0.050 without any problems. Then before shutting down for > the night, I ran one part at #4=0.08. At the start of the thread the > Z would aggressively move then almost come to a s

Re: [Emc-users] Lathe Threading Issues

2009-04-17 Thread Steve Blackmore
On Thu, 16 Apr 2009 22:40:07 -0700, you wrote: >> which sets up for 20 TPI. I ran it like that first, then changed the >> value to .08333 to get 12 TPI. Just a thought - try changing that 0.08333 to 0.084 and see if it still misbehaves. Steve Blackmore -- ---

Re: [Emc-users] Lathe Threading Issues

2009-04-17 Thread Jon Elson
Kirk Wallace wrote: > Whatever it is, it looks like I have it too. I ran the long version four > times with #4=0.050 without any problems. Then before shutting down for > the night, I ran one part at #4=0.08. At the start of the thread the > Z would aggressively move then almost come to a stop

Re: [Emc-users] Lathe Threading Issues

2009-04-16 Thread Kirk Wallace
On Wed, 2009-04-15 at 11:20 -0500, Jon Elson wrote: > Kirk Wallace wrote: > > On Tue, 2009-04-14 at 20:57 -0500, Jon Elson wrote: > > ... snip > > > >> problem, but I made the final fix at the 2007 EMC-Fest, and the driver > >> fixes were in the July 2007 release of EMC2. So, I wanted to see i

Re: [Emc-users] Lathe Threading Issues

2009-04-15 Thread Jon Elson
Kirk Wallace wrote: > On Tue, 2009-04-14 at 20:57 -0500, Jon Elson wrote: > ... snip > >> problem, but I made the final fix at the 2007 EMC-Fest, and the driver >> fixes were in the July 2007 release of EMC2. So, I wanted to see if >> anyone else was seeing similar problems. Also, I don't se

Re: [Emc-users] Lathe Threading Issues

2009-04-14 Thread Kirk Wallace
On Tue, 2009-04-14 at 20:57 -0500, Jon Elson wrote: ... snip > problem, but I made the final fix at the 2007 EMC-Fest, and the driver > fixes were in the July 2007 release of EMC2. So, I wanted to see if > anyone else was seeing similar problems. Also, I don't see why the > spindle sync would

Re: [Emc-users] Lathe Threading Issues

2009-04-14 Thread Chris Radek
On Tue, Apr 14, 2009 at 08:57:36PM -0500, Jon Elson wrote: > My real concern is Mr. Harris' problem with the encoder counter > sometimes missing the reset on index, while it sets the bit saying that > it has done so. An earlier version of the firmware/driver had this > problem, but I made the

Re: [Emc-users] Lathe Threading Issues

2009-04-14 Thread Jon Elson
Steve Blackmore wrote: > On Tue, 14 Apr 2009 12:28:48 -0500, you wrote: > > > >>> Have you tried with plain Gcode? That is a horribly complex piece of >>> code and it's possible the error may be associated with the math >>> involved. >>> >>> >>> >> But, It woks FINE for me! >> >

Re: [Emc-users] Lathe Threading Issues

2009-04-14 Thread Steve Blackmore
On Tue, 14 Apr 2009 12:28:48 -0500, you wrote: >> Have you tried with plain Gcode? That is a horribly complex piece of >> code and it's possible the error may be associated with the math >> involved. >> >> >But, It woks FINE for me! I thought YOU said >One interesting quirk I did see was t

Re: [Emc-users] Lathe Threading Issues

2009-04-14 Thread Jon Elson
Steve Blackmore wrote: > On Mon, 13 Apr 2009 21:48:40 -0500, you wrote: > > > >> I just ran several pieces at 12 TPI, using a program derived from the >> EMC sample program threading.ngc >> > > Have you tried with plain Gcode? That is a horribly complex piece of > code and it's possible th

Re: [Emc-users] Lathe Threading Issues

2009-04-14 Thread Steve Blackmore
On Mon, 13 Apr 2009 21:48:40 -0500, you wrote: >I just ran several pieces at 12 TPI, using a program derived from the >EMC sample program threading.ngc Have you tried with plain Gcode? That is a horribly complex piece of code and it's possible the error may be associated with the math involved.

Re: [Emc-users] Lathe Threading Issues

2009-04-13 Thread Chris Radek
On Mon, Apr 13, 2009 at 09:48:40PM -0500, Jon Elson wrote: > richard harris wrote: > > Jon, > > > > i got a chance to run halscope today and on coarse threads <13 tpi it > > will occasionally not reset the encoder count, count is numerically > > low when it does reset 25k. I do not see this when

Re: [Emc-users] Lathe Threading Issues

2009-04-13 Thread Jon Elson
I'm quoting a message from an EMC user to see if anyone else has seen any signs of this problem. richard harris wrote: > Jon, > > i got a chance to run halscope today and on coarse threads <13 tpi it > will occasionally not reset the encoder count, count is numerically > low when it does reset

Re: [Emc-users] Lathe Threading Issues

2009-03-21 Thread Kirk Wallace
On Fri, 2009-03-20 at 23:42 -0500, Jon Elson wrote: ... snip > have such a problem. Kirk Wallace is also using a UPC board on a lathe, > but I don't know if he is doing a lot of threading. Maybe you should > send me your threading program and I will try it here on the minimill. > Is your mach

Re: [Emc-users] Lathe Threading Issues

2009-03-20 Thread Jon Elson
richard harris wrote: > I am running Elson's servo system and > EMC 2.2.6. > > Over the last few days I have run > several hundred parts single point threading a M22x1.5 threads > without a single bad thread. Yesterday I switched to cutting a > M20x2.5 and suddenly on ever other part the lathe w

Re: [Emc-users] Lathe Threading Issues

2009-03-20 Thread Chris Radek
On Fri, Mar 20, 2009 at 03:15:41PM -0700, richard harris wrote: > > I am running Elson's servo system and > EMC 2.2.6. > > Over the last few days I have run > several hundred parts single point threading a M22x1.5 threads > without a single bad thread. Yesterday I switched to cutting a > M20x2

[Emc-users] Lathe Threading Issues

2009-03-20 Thread richard harris
I am running Elson's servo system and EMC 2.2.6. Over the last few days I have run several hundred parts single point threading a M22x1.5 threads without a single bad thread. Yesterday I switched to cutting a M20x2.5 an

Re: [Emc-users] lathe threading

2008-08-15 Thread Kirk Wallace
On Fri, 2008-08-15 at 23:13 +0200, josep M. giili freixa wrote: > i have a lathe retrofited whit servos. I tried to run it whit Mach3 > but i have problems when threading. Now testing Emc2 but when > configuring it whit Stepwizard all run fine except threading. Gcode > stops in g76 line waithing f

[Emc-users] lathe threading

2008-08-15 Thread josep M. giili freixa
i have a lathe retrofited whit servos. I tried to run it whit Mach3 but i have problems when threading. Now testing Emc2 but when configuring it whit Stepwizard all run fine except threading. Gcode stops in g76 line waithing for spindle sincro. I`m unable the get a explanation in the manuals o

Re: [Emc-users] Lathe Threading

2007-10-10 Thread Chris Radek
On Wed, Oct 10, 2007 at 10:24:31AM -0700, Kirk Wallace wrote: > > I meant to have the process running in the background, all the time so > that if you are making a part, it can detect the fault before it is > finished. With hardware counting, it would be only for very slow speeds that emc would s

Re: [Emc-users] Lathe Threading

2007-10-10 Thread Kirk Wallace
On Wed, 2007-10-10 at 12:06 -0500, Jon Elson wrote: > Kirk Wallace wrote: > > On Mon, 2007-10-08 at 21:52 -0500, Jon Elson wrote: > > ... snip ... snip > > count against the index. If index doesn't appear when the count predicts > > it, a warning could be issued. > > > > You could pretty easily

Re: [Emc-users] Lathe Threading

2007-10-10 Thread Jon Elson
Kirk Wallace wrote: > On Mon, 2007-10-08 at 21:52 -0500, Jon Elson wrote: > ... snip > >>>problem? Maybe missing pulses or noise adding pulses? Thanks for any >>>replies. >> >>It could be anything, so you have to investigate. First, put >>halmeter on the HAL pin ppmc.0.encoder.2.count, rotate t

Re: [Emc-users] Lathe Threading

2007-10-10 Thread Kirk Wallace
On Mon, 2007-10-08 at 21:52 -0500, Jon Elson wrote: ... snip > > problem? Maybe missing pulses or noise adding pulses? Thanks for any > > replies. > It could be anything, so you have to investigate. First, put > halmeter on the HAL pin ppmc.0.encoder.2.count, rotate the > spindle to a known pos

Re: [Emc-users] Lathe Threading

2007-10-08 Thread Kirk Wallace
On Mon, 2007-10-08 at 15:12 -0500, Chris Radek wrote: > 1250 seems like a strange number. Are you sure? (If that is right, > your 5000 setting is correct) I believe I ordered the U. S. Digital one inch 1250 cpr disk, but now that you mention it, I should check it to make sure. They have twenty-

Re: [Emc-users] Lathe Threading

2007-10-08 Thread Jon Elson
Chris Radek wrote: > On Mon, Oct 08, 2007 at 12:31:42PM -0700, Kirk Wallace wrote: > > >>My thinking is that INPUT_SCALE should not need to be adjusted by cut >>and try, so if the thread tpi is not correct, it must be an encoder >>problem? Maybe missing pulses or noise adding pulses? Thanks for

Re: [Emc-users] Lathe Threading

2007-10-08 Thread Stephen Wille Padnos
Jon Elson wrote: >[snipped good debugging information] > >If you haven't done the servo tuning yet, you have no business >putting a cutter and workpiece in the machine, it could be half >an inch out of position and you wouldn't know. > > I don't think this is the case. Since there's encoder f

Re: [Emc-users] Lathe Threading

2007-10-08 Thread Jon Elson
Kirk Wallace wrote: > I did my first CNC lathe thread today. I actually got a thread which, on > a first try, I didn't expect. I entered parameters for a 20 tpi thread > and got something like 23 tpi. When I setup the spindle parameters in > the ini file, I assumed that the encoder input scale shou

Re: [Emc-users] Lathe Threading

2007-10-08 Thread Chris Radek
On Mon, Oct 08, 2007 at 12:31:42PM -0700, Kirk Wallace wrote: > My thinking is that INPUT_SCALE should not need to be adjusted by cut > and try, so if the thread tpi is not correct, it must be an encoder > problem? Maybe missing pulses or noise adding pulses? Thanks for any > replies. I agree, y

[Emc-users] Lathe Threading

2007-10-08 Thread Kirk Wallace
I did my first CNC lathe thread today. I actually got a thread which, on a first try, I didn't expect. I entered parameters for a 20 tpi thread and got something like 23 tpi. When I setup the spindle parameters in the ini file, I assumed that the encoder input scale should equal the number of pulse

Re: [Emc-users] Lathe Threading

2007-06-29 Thread Andre' Blanchard
m: [EMAIL PROTECTED] > > To: emc-users@lists.sourceforge.net > > Date: Fri, 29 Jun 2007 11:23:36 -0500 > > Subject: [Emc-users] Lathe Threading > > > > First of all, thank you developers for EMC and thank you John Kasunich > > for getting the m5i20 threading working

Re: [Emc-users] Lathe Threading

2007-06-29 Thread Chris Morley
re at all-if you are careful. It all really depends on how good a fit you need and how much time you want to spend and what you have for tools! Cheers Chris Morley > From: [EMAIL PROTECTED]> To: emc-users@lists.sourceforge.net> Date: Fri, 29 > Jun 2007 11:23:36 -0500> Subjec

Re: [Emc-users] Lathe Threading

2007-06-29 Thread John Kasunich
Andre' Blanchard wrote: > At 11:23 AM 6/29/2007, you wrote: >> trial and error. I have a project of machining a back plate for an L&W >> dividing head, the thread is 2-1/4 10tpi. I dread test fitting the >> dividing head to the back plate! >> >> Roger Neal >> > > Make up a few simple rings from

Re: [Emc-users] Lathe Threading

2007-06-29 Thread Andre' Blanchard
At 11:23 AM 6/29/2007, you wrote: >trial and error. I have a project of machining a back plate for an L&W >dividing head, the thread is 2-1/4 10tpi. I dread test fitting the >dividing head to the back plate! > >Roger Neal > Make up a few simple rings from scrap and do a trial run or three. Then

[Emc-users] Lathe Threading

2007-06-29 Thread RogerN
First of all, thank you developers for EMC and thank you John Kasunich for getting the m5i20 threading working. I loaded the pre 2.1.7 version and built it on my pc, the threading worked first try, I only had to change my old latch-index to index-enable and then tested it out, I now have a lat

Re: [Emc-users] Lathe Threading in EMC

2007-05-24 Thread Jon Elson
Isak Levinson wrote: > Hi All, > > Is it possible to make threads in EMC2? > In the user manual it says that it is possible, but I can't figure out how to > do it. Of course, you have to have an encoder on the spindle. And, you have to provide a way to feed this encoder information back to the co

Re: [Emc-users] Lathe Threading in EMC

2007-05-24 Thread Jeff Epler
On Thu, May 24, 2007 at 05:46:02AM -0700, Isak Levinson wrote: > Does the index output need to be one pulse per revolution? > Can it be similar to what there is in mach2 program: several pulses per rev > with one pulse wider than the others. Right now, only a spindle with encoder and index pulse

Re: [Emc-users] Lathe Threading in EMC

2007-05-24 Thread Isak Levinson
TED]> To: Isak Levinson <[EMAIL PROTECTED]>; Enhanced Machine Controller (EMC) Sent: Thursday, May 24, 2007 3:37:16 PM Subject: Re: [Emc-users] Lathe Threading in EMC Yes, it is possible. You need a spindle with encoder and index pulse output. The sample configuration "nist-lath

Re: [Emc-users] Lathe Threading in EMC

2007-05-24 Thread Jeff Epler
Yes, it is possible. You need a spindle with encoder and index pulse output. The sample configuration "nist-lathe" shows the necessary HAL configuration when the encoder is connected to parport pins 11, 12, and 13. The sample ngc file "threading.ngc" uses a bunch of G33 (spindle synchronized mot

Re: [Emc-users] Lathe Threading in EMC

2007-05-24 Thread Chris Radek
On Thu, May 24, 2007 at 04:10:52AM -0700, Isak Levinson wrote: > Hi All, > > Is it possible to make threads in EMC2? Yes, there's a basic threading move (G33) and a threading cycle with many features (G76). > In the user manual it says that it is possible, but I can't figure out how to > do it.

[Emc-users] Lathe Threading in EMC

2007-05-24 Thread Isak Levinson
Hi All, Is it possible to make threads in EMC2? In the user manual it says that it is possible, but I can't figure out how to do it. Thanks, Isak. Boardwalk for $500? In 2007? Ha! Play Monopoly Here an