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Messages - axl936

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1
Mach4 General Discussion / Re: Mach4 Threading having problems
« on: March 31, 2017, 06:26:34 AM »
Hi !
i have tryed the mach4 (last version at today) threading wizard....

i think that the wizard have some bugs...

these are my impressions:

The result G76 code is not correct with the inserted settings..
The K parameter is partially incompatible with mach4 (the wizard generate a values from 0 to 3 and mach4 accept values from 1 to 4)
The G76 X end is not corrected with height of the thread and In this way the beginning of the thread is out of the piece (and the first passes)  ..

Has anyone else tried with success ?

2
Mach4 General Discussion / Re: G76 threading cycle bug ?
« on: March 07, 2017, 03:41:51 AM »
Hi Steve..
excuse me, but i have read the lathe manual..
This :
http://www.machsupport.com/wp-content/uploads/2014/05/Lathe%20GCode%20Programming.pdf

And at page 29/30 i can read:

Quote
K: Infeed type. There are 4 possible infeed selections, 0 to 3. The 4 options are combinations of
two infeed types and two depth of cut types. The two infeed types are flank and alternate flank,
see figure 76-1. In the flank infeed mode each depth of cut moves down at the angle for the
thread, following the trailing flank of the tool. Alternate flank changes from leading to trailing
flank for each pass. The two depth of cut types are constant volume and constant depth. In
constant volume the depth of cut will get smaller (down to the minimum specified by Q) for
each pass to maintain a constant volume of material being removed. This is usually better for
tool life and thread quality. Constant depth is just that. Each depth of cut is the same down to
the finish allowance.
o 0 constant volume flank infeed
o 1 constant volume alternate flank infeed
o 2 constant depth flank infeed
o 3 constant depth alternate flank infeed.
[...]

What is the manual do you refer ?
Can you give me the link ?

Many thanks..

3
Mach4 General Discussion / Re: G76 threading cycle bug ?
« on: March 06, 2017, 03:16:36 AM »
Hi !
Many thanks wwente for your test..
If you have the same problem then it could be a MACH4 problem/bug ...

Now.. someone who uses the threading function can tell me if the "0" value of the manual corresponds to "1" , "1" to "2" ..... and "3" to "4"
(every value is shifted to 1 ?)

Can someone confirm ?


4
Mach4 General Discussion / G76 threading cycle bug ?
« on: March 05, 2017, 05:43:58 PM »
Hi to all
i'm new to mach4 hobby, but i have a strange thing about..

when i try to make a g76 threading cycle (using canned cycle wizard), and i try to set the K parameter to "0", mach4 give me an error .. k value is invalid
If i try to set K from 1 to 4 mach accept this, but the manual report:

Quote
Kā€“Cutting method
K = 0: Flank in-feed constant volume removal for each pass
K = 1: Alternate flank in-feed constant volume removal for each pass
K = 2: Flank in-feed constant depth removal for each pass (each pass same as first pass)
K = 3: Alternate flank in-feed constant depth removal for each pass (each pass same as first pass)

can someone try this and report me ?
Is a bug ?

Bye

Axel

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