Re: [CAD_CAM_EDM_DRO] Power draw bar

----- Original Message -----
From: "Mark Vaughan" <mark@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, December 20, 2006 6:16 PM
Subject: RE: [CAD_CAM_EDM_DRO] Power draw bar


> Hi Vince
>
> I don't know what a J head looks like, but I too am looking at building a
> power draw bar from several sets of plans with a few mods, got all the
> parts, still working on the mach3 conversion at present.
>
>
>
> The designs I have use a butterfly air wrench and an air ram to lower the
> wrench onto the top of the draw bar. In my case I want to do automatic
tool
> changing, the spindle will lower itself over a new tool, and the power
draw
> bar must engage on the draw bat with the spindle lowered. I am lengthening
> the drawbar so it will stick out the top of the head, and using a long air
> ram for the extra travel. I also have an indexing sensor on my spindle so
I
> can index the spindle by inching the inverter, and stopping with inverter
> and spindle brake together.
>
> All presently between theory and half build.
>
>
>
> I assume your J head has it's brake coming out the top of the head so it
> gets in the way of the mount for the power draw bar, in which case you
will
> need to redesign the mount to clear all this.
>
>
>
> Regs Mark
>
> _____
>
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Vince Endter
> Sent: 20 December 2006 22:56
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Power draw bar
>
>
>
> I am building a power draw bar from a set of plans and am wondering if
> anyone with a Breidgeport J-head has installed one of these. It seems
> that on the J-head the clutch lever and cam ring would get in the way.
> The 2J head is different in this area. If anyone has pictures of an
> installation on a J-head they would be greatly appreciated.
>
> Thanks
>
> Vince
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
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