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Messages - Graham Waterworth

1891
General Mach Discussion / Re: Tip Direction in Turn?
« on: October 09, 2007, 04:48:42 AM »
Hi Chip,

On an industrial machine it makes no difference which tool post as everything is rotated around the centre line in the software.

Front tool post tools cut on top, rear tools cut underneath.

As for mach3, not 100% sure as I have not tried it, but I will and report back.

Graham.

1892
General Mach Discussion / Re: Tip Direction in Turn?
« on: October 08, 2007, 06:18:28 PM »
 :)

Graham.

1893
General Mach Discussion / Re: Tip Direction in Turn?
« on: October 08, 2007, 06:12:20 PM »
By the way, they only have an effect when you use tool comp. Also they can be a pain to use, if you go down a bore with something like :-

G00 X27. Z1.
G01 G41 Z0 F.15
X25. Z-1.
Z-25.
G00 Z1.
G40

Then the tip will smash and scrap the part as you have changed direction the tool jumps to the other side of the line and digs into the bore.

This method is safer.

G00 X27. Z1.
G01 G41 Z0 F.15
X25. Z-1.
Z-25.
X23.
G00 G40 Z1.

Also, NEVER do grooving using tool comp.

Graham.

1894
General Mach Discussion / Re: Tip Direction in Turn?
« on: October 08, 2007, 05:47:24 PM »
I was at work when I saw your post, so time was short.

If you look at the 'V' shape created by the divisions then they look like the point of a tip, the 'V' created by 8 and 3 would be a normal o/d turning tool.

So :-

O/D moving right to left is direction 3
                 left to right                 4
I/D             right to left                 2
                 left to right                 1
O/D using a button tool                 8
I/D     "         "        "                    6

Is that more understandable  :)

Graham.

1895
General Mach Discussion / Re: Tip Direction in Turn?
« on: October 08, 2007, 07:30:40 AM »
Hi Hood,

this is how the tool tip works.

Graham.

1896
G-Code, CAD, and CAM discussions / Re: loop question with mach3
« on: October 08, 2007, 07:18:43 AM »
With in your loop add :-

G91 Z-.062
G90

Graham.

1897
What you can do is this :-

Set up a M code macro that reads the parameters from a M code call, e.g.

'M1010.m1s
Dim P as Integer
P=Param1()
SetOEMDRO(1214,P)
End

Then in your G_code call M1010 P#1

Not done this in a while but I think its right.

If it works, where do I send the bill  ;D

Graham.

1898
Hummmmmmmm, yes it was a thought, not had a genuine one for a while.

The top and bottom of it is it will not work.

If it was a normal program it would look something like this :-

O0001
#1=1
M98 P2 L10
M30

O0002
G00 Z[#1-[#1/2]]
#1=[#1-1]
M99

The way you are doing it the sub dose not exist until the VB script creates it line by line.

Go back to the start and tell us what you are trying to do, there will be a way but I don't think this is it.

Graham.

1899
There is the function GetPage() that will return the page number you are on.

Graham.

1900
Hi Shepard,

if you run the program with out the machine cutting is everything OK?

Is the fault always at the same point in the program?

Graham.