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Author Topic: G76 Threading Wizard ?  (Read 8557 times)

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G76 Threading Wizard ?
« on: October 15, 2009, 11:23:15 AM »
Is there a wizard to produce G76 code ?

Or could someone post code for 1.5mm pitch thread 8mm dia x 20mm long in full G76 format

So i can configure my Post Processor

Thanks
Phil
The Good Thing About Mach3, Is It's very Configurable

The Bad Thing About Mach3, Is It's Too Configurable

Offline Hood

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Re: G76 Threading Wizard ?
« Reply #1 on: October 15, 2009, 01:52:32 PM »
The simple threading wizard does G76. A look in the Turn manual will give you all the words that can be used, which are needed and which are optional.

Hood
Re: G76 Threading Wizard ?
« Reply #2 on: October 15, 2009, 04:22:08 PM »
Sorry thought G32 was the simple one.

When i run my cam generated code i get the chamfer at the beginning of the pass rather than at the end, but it is all in the order is documented in the manual.

I just wanted to see where the error was, i will go and produce some code now.

Thanks Hood
The Good Thing About Mach3, Is It's very Configurable

The Bad Thing About Mach3, Is It's Too Configurable

Offline Hood

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Re: G76 Threading Wizard ?
« Reply #3 on: October 15, 2009, 04:25:38 PM »
Order shouldnt matter.
Hood
Re: G76 Threading Wizard ?
« Reply #4 on: October 15, 2009, 04:41:08 PM »
OK, if it doesn't matter about order i may have another problem.  ;D

I'm only dry cutting at the moment.

The X & Z both feed in together then there is a small X movement, then the Z moves at pitch speed.

When that Z depth is reached there is a G00 out on the X axis then a G00 feed on the Z axis back to the start when it all repeats.

I have already found other error in the Post Processor for Screwcutting.

Phil
The Good Thing About Mach3, Is It's very Configurable

The Bad Thing About Mach3, Is It's Too Configurable

Offline Hood

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Re: G76 Threading Wizard ?
« Reply #5 on: October 15, 2009, 04:51:56 PM »
What CAM are you using?
Hood

Offline RICH

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Re: G76 Threading Wizard ?
« Reply #6 on: October 15, 2009, 05:53:05 PM »
FWIW,
How about using the wizard and generate the same code. Only difference change the M0176.mis file such that it will generate code for  G76 and then for a G32.
RICH
Re: G76 Threading Wizard ?
« Reply #7 on: October 16, 2009, 04:17:45 AM »
Hood, Thanks OneCNC

One error i have noticed with the post processor is if i fill in the box for a 3mm retract the post processor adds a decimal point so i get a .3mm pullout.  ???

Rich, Thanks i have just tried the wizard "Simple Threading" that produced G76 code.

I am now going to try the Mach code.

Phil
The Good Thing About Mach3, Is It's very Configurable

The Bad Thing About Mach3, Is It's Too Configurable
Re: G76 Threading Wizard ?
« Reply #8 on: October 16, 2009, 04:58:03 AM »
OK just tried the Mach code and have some questions.

On ports/Pins, Turn options there are some default values for threading.

Do these values over ride what is posted in the code if a value is included in the code or only if a value is missing from the posted code

These would be listed as optional on page 10-16 on ver 1.84 manual. ?

Phil
The Good Thing About Mach3, Is It's very Configurable

The Bad Thing About Mach3, Is It's Too Configurable

Offline Hood

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Re: G76 Threading Wizard ?
« Reply #9 on: October 16, 2009, 05:07:59 AM »
They should only be used if none are in the code. The wizard also has additional settings which you get to by pressing the Settings button in the wizard.
Hood