Carving

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Kerry Fullington
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Carving

Postby Kerry Fullington » Sun, Sep 02 2012, 10:02AM

I ran a fairly detailed carving last Friday. There were approx. 800,000 lines of code with lots of small, jerky movements on the machine. Another local shop owner said that this type of carving wore out the drive motors on his machine.
My question, Is this type carving hard on the router?

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Re: Carving

Postby Will Williamson » Sun, Sep 02 2012, 3:43PM

Slow the feed rate down to 150 ipm
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Kerry Fullington
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Re: Carving

Postby Kerry Fullington » Sun, Sep 02 2012, 5:43PM

Thanks Will,

I had the tool at 200 ipm in the design but I slowed the machine to 60%.

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Re: Carving

Postby Josh Rayburn » Tue, Sep 04 2012, 6:06AM

Hi Kerry,
On my machine the tangency factor could be changed to better suit those types of short movements, and make things less jerky.
On the machine you're using, it could be a little different, I'm not sure.
What controller do you have?
jnr
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Kerry Fullington
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Re: Carving

Postby Kerry Fullington » Tue, Sep 04 2012, 6:29AM

Thanks Josh,

We are running the Gen 2 Supercontrol and will be upgrading to the Q-Core shortly. I will look into adjusting the tangency factor. This particular carving ate up four hours of machine time as is so if slowing the machine down as Will mentioned is the only option, it would make it where we couldn't offer many carvings. They would just be too expensive to run.

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Re: Carving

Postby Josh Rayburn » Tue, Sep 04 2012, 6:35AM

I hear ya Kerry - they are indeed a slow process. There are so many easy sources for carvings that it's hard for us to compete! I think I've done...maybe one carving over the past 3 years....?
Josh Rayburn
Hall's Edge, Inc.
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Kerry Fullington
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Re: Carving

Postby Kerry Fullington » Tue, Sep 04 2012, 6:47AM

Outsourcing carvings is definitely less expensive but an integral carving looks and feels so much better than an applied one.

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Re: Carving

Postby Josh Rayburn » Tue, Sep 04 2012, 6:56AM

I don't know what you were carving but there's always those hand tool thingies - they cause less wear and tear on the CNC!
:joker: :joker:
Haha!
jnr
Josh Rayburn
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Kerry Fullington
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Re: Carving

Postby Kerry Fullington » Tue, Sep 04 2012, 7:10AM

But they require talent. :D

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Re: Carving

Postby Daniel Vonderheide » Tue, Sep 04 2012, 8:24AM

Kerry,

On the Gen 2 and the Qcore you really dont need to adjust the tanfac. What you would really want to adjust is your accelerations. If you change from 100 percent (G800) accellerations to 70 percent (G803), you should see an improvement on the shaking and you will not loose as much time in the machininig.

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Re: Carving

Postby Will Williamson » Tue, Sep 04 2012, 9:00AM

Daniel can you just insert this line ( G803 )at the beginning of the program?
Kerry another thing that seams to help is to raster in the Y direction if possible. Rapid raster acceleration in the x direction causes the whole gantry to shake.
Will

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Re: Carving

Postby Daniel Vonderheide » Wed, Sep 05 2012, 7:31AM

Will,

You can place the acceleration macro anywhere in the program and it will take effect immediately. If you want to slow the accelerations down only on the carving, you can add a G803 before it starts on that section of the code and then place a G800 afterwards so the rest of the cutting is at regular accelerations.


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