Messages

2171

General Mach Discussion / Re: Special code for threading?

« on: January 23, 2013, 07:11:40 PM »

dresda,
Seems like you are are on your owne. I am not going to question a manufactures way of implementing their
controller as they are responsible for making their device work with Mach. I also think that they should provide
the specifics of how that is done and support you in your efforts to use that product. We can only give you what our experience entails. Quess I am just echoing what a few others have already said.

wish you luck,
RICH

2172

General Mach Discussion / Re: lathe threading pitch error

« on: January 23, 2013, 07:17:07 AM »

Happy you found it.
We spent many hours with Art trying to get threading fixed and don't want to revisit testing. 
Hope you now understand why we are so adamant on rpm and axis accuracy.

RICH

2173

dspMC/IP Motion Controller / Re: g94/95 feed problem

« on: January 23, 2013, 07:05:21 AM »

G94 is Modal so you comand G95 for the feedarte to be units per revolution.

If no feedrate is given you get an error as you noted ( think the message is a little different than what you posted).
While in G95 mode you will get movement but if no feedrate was given the movement is "simulated" as Mach has no basis for the feedrate.  ie; other modal groups which can be in effect.

Maybe someone else can be more definitive.
 
RICH

2174

dspMC/IP Motion Controller / Re: g94/95 feed problem

« on: January 22, 2013, 06:36:57 PM »

Sorry, didn't realize you were using an external motion device.
RICH

2175

LazyTurn / Re: Dxf and Lazy turn import

« on: January 22, 2013, 06:33:12 PM »

I couldn't open your dxf in some CAD programs but LT opened it. There is a manual for LT.
Suggest you have a read of it and not hack the program.
RICH

2176

General Mach Discussion / Re: Special code for threading?

« on: January 22, 2013, 06:19:39 PM »

My bad...didn't realise that he is using an external motion device.
Need to stop speed reading which i can't do anyway.   
RICH

2177

General Mach Discussion / Re: Special code for threading?

« on: January 22, 2013, 05:23:47 PM »

Hood, would't know as i don't follow Yahoo anymore and still use a rather old version of Mach .....works too well for me to change.
RICH

2178

General Mach Discussion / Re: Special code for threading?

« on: January 22, 2013, 05:15:57 PM »

Use two mpg's here via the PP and have no problem's at all with them.

Mach allows for adjustment of the feedrate depending on what the true rpm reading was so it can fix the thread if required
due to spindle slow down but will not address spindle speed up. You don't want some arbitrary value screwing up the next cycle.
That's what was meant by the vfd fighting Mach and thus setting the spindle rpm manualy and letting the rpm settle  before threading.

If you so desire  you can have a read of page 4 in the Threading on the Lathe write up as it explains the cycle in detail.
As you read that break down each step and consider how the rpm and also the Z axis move, or any other part of the system can and will affect the threading cycle. You threading will only be accurate as your lathe SYSTEM.

RICH

2179

dspMC/IP Motion Controller / Re: g94/95 feed problem

« on: January 22, 2013, 07:04:56 AM »

G95 requires a G32 so that an index is seen, no index seen no movement since Mach is waiting to verify the index.
RICH

MODIFIED: G32 will change the feedrate mode from G94 to G95 and acticvates  a call for Mach wanting to see a index when used for threading
on the lathe.

2180

General Mach Discussion / Re: I can only see 2 decimal places on feedrate window

« on: January 22, 2013, 06:57:34 AM »

Inputed or called for feedrate is implemented even though it is not shown in the window as such.
RICH