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Author Topic: Bridgeport Knee Mill Conversion?  (Read 159139 times)

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Offline TPS

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Re: Bridgeport Knee Mill Conversion?
« Reply #630 on: January 23, 2018, 03:18:28 PM »
Hello,
had the same thing with this ePid fault.

i can see you are using CSLAB as well.

here the original answer from CSLAB as i went into this ePid Thing:

--- This fault can be activated by:
---  Bad Mach3 version. Bersions newer that 03.043.045 of Mach3 can cause ePID fault.
--- We recommend to use versions of Mach3 03.043.022 to 03.043.044. We always use 03.043.022 version as it's the most reliable in our opinion.


regards Tom

PS i "downgraded" to 03.043.022 and the ePid Thing is gone
« Last Edit: January 23, 2018, 03:20:04 PM by TPS »
anything is possible, just try it.
if you find some mistakes, in my bad bavarian english,they are yours.

Offline Davek0974

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Re: Bridgeport Knee Mill Conversion?
« Reply #631 on: January 23, 2018, 04:15:31 PM »
Thanks, interesting, would be great to know what they did that an upgrade broke but i guess we'll never find out now.

I have the knee moving under power now, it was my fault for wiring the encoder to one channel and the analogue out to another channel ;)

Its not tuned right yet as it oscillates after it stops when homing.

At least we have motion now.
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives
Re: Bridgeport Knee Mill Conversion?
« Reply #632 on: January 23, 2018, 04:16:28 PM »
Way to go Dave!


Mike
We never have the time or money to do it right the first time, but we somehow manage to do it twice and then spend the money to get it right.

Offline Davek0974

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Re: Bridgeport Knee Mill Conversion?
« Reply #633 on: January 23, 2018, 04:20:13 PM »
Yes, i was pleased i sorted it - hate sleeping on a problem.

Its homing ok with the index pulse too.

Need to sort out soft limits, what sort of speed to limit it to, keyboard shortcut keys and so on.
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives
Re: Bridgeport Knee Mill Conversion?
« Reply #634 on: January 23, 2018, 04:45:12 PM »
Hi Dave,
If you are driving the factory open bevel gears with the servo I would stay on the conservative side. Since it is only going to Home at the beginning and then just provide tool offsets it doesn't have to go 800 ipm!!! My guess that even 25 ipm will be tolerable and won't hurt anything. Typically on a standard keyboard I would use page up and down for the A axis and so I would suggest that insert and delete or home and end would work. Hopefully they aren't critical to the working of Mach.

Mike
We never have the time or money to do it right the first time, but we somehow manage to do it twice and then spend the money to get it right.

Offline Davek0974

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Re: Bridgeport Knee Mill Conversion?
« Reply #635 on: January 23, 2018, 04:53:05 PM »
Ok, great its set on 500mm/min so i can go a little more if wanted i guess, it seems ok though at that speed.

I'm using a stainless kiosk keyboard which has a lot of keys missing (including all the F buttons :( ) I'll see what there is.

Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives
Re: Bridgeport Knee Mill Conversion?
« Reply #636 on: January 23, 2018, 04:54:40 PM »
I only use the "F" buttons when I am really upset! ROFLMAO
Sorry couldn't resist.

Mike
We never have the time or money to do it right the first time, but we somehow manage to do it twice and then spend the money to get it right.

Offline Davek0974

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Re: Bridgeport Knee Mill Conversion?
« Reply #637 on: January 23, 2018, 05:00:38 PM »
LOL
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives

Offline Davek0974

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Re: Bridgeport Knee Mill Conversion?
« Reply #638 on: January 24, 2018, 05:56:38 AM »
Re the coordinates to use for knee moves?

My original idea was to have the C(knee) axis zeroed along with the Z axis so that when i use my Haimer probe to set work coordinates, the C and Z will both be reading zero, then when the next tool is called the macro can simply send the difference between my probe height and the tool height to the knee axis C.

Now, a learned friend has suggested a safer option is to use machine coordinates for the knee.

So, if its in machine coordinates, when i set the work zero ref (Z), the knee may be reading -250 or somewhere like that, now unless i get jiggy with variables and store the knee machine DRO when i press Z zero, how will i calculate the amount to move the knee upon tool change??

I may just not have seen the light yet but don’t know:)

It would certainly be safer to use machine coords of course.

IIRC variables are system wide so i can set one in the Z Zero call and read it later in the M6 macro's ??
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives

Offline Davek0974

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Re: Bridgeport Knee Mill Conversion?
« Reply #639 on: January 24, 2018, 09:08:17 AM »
Ok, so i have a general dislike of going near variables - you have little idea of which one is free and i don't like cherry-picking a number just in case its used elsewhere and causes big trouble :)

So, my next idea to enable me to use machine coords for the knee is this...

Hide a user DRO on my screen somewhere,
Zero this DRO upon Mach loading,
When i press "Set Z Zero" it copies the value of OEMDRO(88) (C axis machine coords) into the hidden DRO - this is now my reference value for all TL calculations,
In my M6Start I can read the hidden DRO, use the value to calculate a move based on the difference between my probe and tool,
Make the move in G53 on the C axis

I'm guessing a test/abort/message will need going in the M6start to abort if the hidden DRO is zero i.e. Z is not set or a rapid dent of the knee could occur if a tool change is manually called etc.

Sound like a workable idea?
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives