Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread Gregg Eshelman via Emc-users
I'd expect most to get it trammed, tighten the bolts extra, and leave it alone. Some companies doing Bridgeport or clone CNC builds made rigid rams without any ability for the head to tilt or nod. A few went so far as to make even the head custom, without any capability of having manual

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread Jon Elson
On 05/08/2018 10:04 PM, Gene Heskett wrote: On Tuesday 08 May 2018 22:19:25 Jon Elson wrote: On 05/08/2018 06:57 PM, John Dammeyer wrote: I had a brake disk surface ground so it can be laid on the mill table and a dial indicator swept around without jamming into the T-Slots. For the work

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread John Dammeyer
> > > I have a program that generates a full circular arc, and > then goes to the center of the arc. > So, I can mill a path around the circle, then swap the end > mill for a dial test indicator, and sweep the > circle. So, I can tram the head to the actual X-Y plane of > motion, not just the

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread Gene Heskett
On Tuesday 08 May 2018 22:19:25 Jon Elson wrote: > On 05/08/2018 06:57 PM, John Dammeyer wrote: > > I had a brake disk surface ground so it can be laid on the mill > > table and a dial indicator swept around without jamming into the > > T-Slots. For the work I've done to date it's been adequate.

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread Jon Elson
On 05/08/2018 06:20 PM, John Dammeyer wrote: Most of the Knee type mills have heads that can pivot up to 45 degrees left and right. Bridgeports can also pitch forward and back. For those who have done a CNC conversion on these machines, are those features every used anymore? Or is the head

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread Jon Elson
On 05/08/2018 06:57 PM, John Dammeyer wrote: I had a brake disk surface ground so it can be laid on the mill table and a dial indicator swept around without jamming into the T-Slots. For the work I've done to date it's been adequate. It fits on my surface plate so I could scrape it even

Re: [Emc-users] 7i90 not listed in pnc

2018-05-08 Thread jeremy youngs
> > . > >> >> Use PnCConfo to create a set of HAL, INI and other files, then work on >> those files directly. >> > Done, verified linuxcnc start up before editing . >> >> Change hm2_pci to hm2_eth, and add a "board_ip=..." parameter >> Tweak the config files until there are no errors and LinuxCNC

Re: [Emc-users] Mill head travel

2018-05-08 Thread Robert Ash
On Tuesday 08 May 2018 19:57:15 John Dammeyer wrote: > I had a brake disk surface ground so it can be laid on the mill table > and a dial indicator swept around without jamming into the T-Slots. > For the work I've done to date it's been adequate.  It fits on my > surface plate so I

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread John Dammeyer
Even if it has a hub you can machine that off first so you just have a large flat disk. I had a machine shop do it for me. I really don't know how flat it is but it seems to be the same thickness all around. Haven't used it in years since I've not touched the mill in a way where I'd need to re

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread jeremy youngs
> > I had a brake disk surface ground so it can be laid on the mill table > > and a dial indicator swept around without jamming into the T-Slots. > I did the same thing six years ago. Really want to make it easy get a coaxial indicator and it takes about a minute. > >

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread Gene Heskett
On Tuesday 08 May 2018 19:57:15 John Dammeyer wrote: > I had a brake disk surface ground so it can be laid on the mill table > and a dial indicator swept around without jamming into the T-Slots. > For the work I've done to date it's been adequate. It fits on my > surface plate so I could scrape

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread Gene Heskett
On Tuesday 08 May 2018 19:30:24 jeremy youngs wrote: > On Tue, May 8, 2018, 18:21 John Dammeyer > wrote: Or is the head trammed in as close as possible and then left > there forever? > > I recommend tramming to as close as possible with spindle down, then > drilling and

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread John Dammeyer
I had a brake disk surface ground so it can be laid on the mill table and a dial indicator swept around without jamming into the T-Slots. For the work I've done to date it's been adequate. It fits on my surface plate so I could scrape it even flatter and maybe someday it will move up to project

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread John Dammeyer
Thanks. I guess I won't mount any screens or stuff that would prevent it from tilting. John > -Original Message- > From: andy pugh [mailto:bodge...@gmail.com] > Sent: May-08-18 4:47 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Mill Head Travel. > > On 9 May

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread andy pugh
On 9 May 2018 at 00:20, John Dammeyer wrote: > For those who have done a CNC conversion on these machines, are those > features every used anymore? Or is the head trammed in as close as possible > and then left there forever? Most work is done with the head vertical,

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread Gene Heskett
On Tuesday 08 May 2018 19:20:48 John Dammeyer wrote: > Most of the Knee type mills have heads that can pivot up to 45 degrees > left and right. Bridgeports can also pitch forward and back. For > those who have done a CNC conversion on these machines, are those > features every used anymore? Or

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread Gene Heskett
On Tuesday 08 May 2018 18:58:53 andy pugh wrote: > On 8 May 2018 at 14:27, John Kasunich wrote: > > Which cables have a braided shield? The ones taking DC power from > > the power supply to the drives? > > > > There's nothing magic about those cables - replace them with

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread John Dammeyer
My go to reference book for this is: "Electromagnetic Compatibility Engineering" By Henry W. OTT Published by Wiley (c) 2009. A bit heavy at times but explains in detail why you might shield or not, twist or not etc. John Dammeyer > -Original Message- > From: andy pugh

Re: [Emc-users] Mill Head Travel.

2018-05-08 Thread jeremy youngs
On Tue, May 8, 2018, 18:21 John Dammeyer wrote: Or is the head trammed in as close as possible and then left there forever? I recommend tramming to as close as possible with spindle down, then drilling and reaming for a shoulder bolt or other removable pin as a pinched

[Emc-users] Mill Head Travel.

2018-05-08 Thread John Dammeyer
Most of the Knee type mills have heads that can pivot up to 45 degrees left and right. Bridgeports can also pitch forward and back. For those who have done a CNC conversion on these machines, are those features every used anymore? Or is the head trammed in as close as possible and then left

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread andy pugh
On 8 May 2018 at 19:52, Chris Albertson wrote: > But if using a second power supply helped then I doubt the ferrite choke > will fix the same problem. The problem was maybe in the write routing > (were signal and power wires running parallel to each other?) or it was

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread andy pugh
On 8 May 2018 at 14:44, Peter C. Wallace wrote: > At the frequencies involved, your entire "ground" is nothing but a big > tapped autotransformer. For our experience with the 8I20 we found the > simplest thing to do about EMI was to put a large ferrite bead over the 3 > motor

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread andy pugh
On 8 May 2018 at 14:27, John Kasunich wrote: > Which cables have a braided shield? The ones taking DC power from the power > supply to the drives? > > There's nothing magic about those cables - replace them with two suitably > sized single-core wires. I know there is

Re: [Emc-users] Pendants for LinuxCNC or MachineKit

2018-05-08 Thread Ken Strauss
Interesting. How does it "talk" to LinuxCNC? Does LinuxCNC display things like DROs on the LCD? > -Original Message- > From: Chris Albertson [mailto:albertson.ch...@gmail.com] > Sent: Tuesday, May 08, 2018 2:41 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users]

Re: [Emc-users] Pendants for LinuxCNC or MachineKit

2018-05-08 Thread John Dammeyer
I have my ELS that has a serial port or can have a CAN driver installed in place of the X axis STEP/DIR. Lots of buttons to make a control panel and I've also installed a larger LCD display on some units. The encoder knob works well for simple motion. Press the knob down and it increments

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread Chris Albertson
So you are asking if the shield will somehow shied out the effect of the ferrite choke. Not. You can use both. The shield only shields the electric field. The magnetic field goes right on through the coper braid as if it was plastic. The ferrite choke works on magnetic field. But if using

Re: [Emc-users] Pendants for LinuxCNC or MachineKit

2018-05-08 Thread andy pugh
On 8 May 2018 at 19:40, Chris Albertson wrote: > I'm building a pendent that will be kind of like this. I want only 2 > buttons. I have the big encoder wheel an a small LCD. The Mesa 7i73 has MPG counters and an LCD driver built in, so all that can be done with

Re: [Emc-users] Pendants for LinuxCNC or MachineKit

2018-05-08 Thread Chris Albertson
I'm building a pendent that will be kind of like this. I want only 2 buttons. I have the big encoder wheel an a small LCD.The idea is that the buttons will not have functions printed on them but the function name will be displayed on the LCD. First version is wired using RJ45 jack and

Re: [Emc-users] Pendants for LinuxCNC or MachineKit

2018-05-08 Thread John Dammeyer
Direct from China. Claim is delivery between 22May and 01Jun. I know I'll be able to plug it into the MACH3 CNC router and I've been looking at the LinuxCNC install. One claim is the display doesn't stay very up to date with the position. But then the problem with the internet forums is

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread Peter C. Wallace
On Tue, 8 May 2018, andy pugh wrote: Date: Tue, 8 May 2018 12:20:53 +0100 From: andy pugh Reply-To: "Enhanced Machine Controller (EMC)" To: "Enhanced Machine Controller (EMC)" Subject: [Emc-users]

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread Gene Heskett
On Tuesday 08 May 2018 08:06:37 andy pugh wrote: > On 8 May 2018 at 12:53, Gene Heskett wrote: > > Is there a possible violation of the single point ground? Some cable > > shield grounded on both ends for instance? > > The internet says that that might be correct for 2.5Mb

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread John Kasunich
On Tue, May 8, 2018, at 7:27 AM, andy pugh wrote: > On 8 May 2018 at 12:20, andy pugh wrote: > > > Should the shield pass through the choke, or should I strip the area > > where the choke is installed? > > Googling for answers to the question I found this (crank?) web

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread John Kasunich
On Tue, May 8, 2018, at 7:20 AM, andy pugh wrote: > I have concluded that I have a problem with noise from my (shared by 4 > drives) servo power supply. > The STMBL drive controlling the 4th axis suffers from CRC errors with > the smart-serial control signals and shuts down. > > By the simple

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread Peter Blodow
Andy, if the shield of your cables is any good, there should be no electric field outside of it (that's the purpose of coaxial shielding), thus, no interference, so further measures like ferrite rings etc. are useless at this point. Your 4 servos draw current from the power supply. The common

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread andy pugh
On 8 May 2018 at 12:53, Gene Heskett wrote: > Is there a possible violation of the single point ground? Some cable > shield grounded on both ends for instance? The internet says that that might be correct for 2.5Mb serial data.

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread Gene Heskett
On Tuesday 08 May 2018 07:27:31 andy pugh wrote: > On 8 May 2018 at 12:20, andy pugh wrote: > > Should the shield pass through the choke, or should I strip the area > > where the choke is installed? > > Googling for answers to the question I found this (crank?) web site: >

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread Gene Heskett
On Tuesday 08 May 2018 07:20:53 andy pugh wrote: > I have concluded that I have a problem with noise from my (shared by 4 > drives) servo power supply. > The STMBL drive controlling the 4th axis suffers from CRC errors with > the smart-serial control signals and shuts down. > > By the simple

Re: [Emc-users] Ferrite on a shielded cable

2018-05-08 Thread andy pugh
On 8 May 2018 at 12:20, andy pugh wrote: > Should the shield pass through the choke, or should I strip the area > where the choke is installed? Googling for answers to the question I found this (crank?) web site: https://www.lessemf.com/cellphon.html Looking at their snap-on

[Emc-users] Ferrite on a shielded cable

2018-05-08 Thread andy pugh
I have concluded that I have a problem with noise from my (shared by 4 drives) servo power supply. The STMBL drive controlling the 4th axis suffers from CRC errors with the smart-serial control signals and shuts down. By the simple expedient of running it from a separate PSU this problem seems to

Re: [Emc-users] MC1650LS motor controller for CNC?

2018-05-08 Thread Gregg Eshelman via Emc-users
The MC60 is SCR, low torque at low speeds and runs the motor terribly noisy. I tried the MC60 that came with the treadmill. It wouldn't send power to the motor until the pot was up to 50%. then it could be slowed down but if the knob was turned back too fast it'd shut off. The MC2100 and

Re: [Emc-users] Pendants for LinuxCNC or MachineKit

2018-05-08 Thread Lester Caine
On 07/05/18 20:42, John Dammeyer wrote: I made the plunge and ordered one. Local supply or direct from China? I've a couple listed as 'item location London' and even a 48 hour delivery would get it here for Thursday, but £150 for next day against £11.80 for a supposed 48 hour Royal Mail