RE: [CAD_CAM_EDM_DRO] Re: Reverse CAD CAM

That's good, didn't want you to run into any trouble.

I too make the machine that controls the nozzle, and leave the rest to the
chemical and pouring guru.

They mould the foam in moulds with a special process, cut it and glue in
plywood stringers to strengthen it, then have something like a CNC drum
sander that shapes all the concave surfaces of the board. Convex ones are
presently done manually. This particular machine uses a dedicated control
developed and supplied by an Ausi, so I can't comment on how they program
it. We just keep the software running, in modern PC's which is hell to keep
viable drivers for the custom cards, and tune and maintain the servos.

The pouring guru's and chemical guy together with the machine we developed
for them are now able to control the density of their foam throughout the
board, this that keeps it much lighter stronger and they can control the
balance. At least that's what the surfers say.



I'm not yet into 3d modelling for CNC so I afraid I can't help you with
that.

Regs Mark



Dr. Mark Vaughan Ph'D. B.Eng. M0VAU

Managing Director

Vaughan Industries Ltd, reg in UK no 2561068

Water Care Technology Ltd, reg in UK no 4129351

Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
Phone/Fax 44 1872 561288

RSGB DRM111(Cornwall)

_____

From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Filipe Tomaz
Sent: 28 April 2007 19:41
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: Reverse CAD CAM



My company will only be responsible for positioning the "tool". What
tool is it, or what will it inject, I don't know and I don't "care"
for my part of the machine. They are developers, so my problem ends if
I can demonstrate that the machine will follow a toolpath that
corresponds to the object.

My question is only where is the software ?
That is all, since the machine, I can build.

By the way, I did a machine (large) that makes surfboards blanks from
large blocks of foam and wood.

Filipe

--- In CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups.com, "Mark Vaughan" <mark@...> wrote:

>
> I don't own the secrets, they are confidential, so my discussion is

limited.

>
> I manufacture CNC machines to blow foam surfboard blanks.
>
> Sculpting with foam blown in open space has many problems and will

not be as

> easy as it sounds. It is not simply a case of pop the valve for a

certain

> amount of time to create a bobble of X size, skin boundaries form

between

> old and new surfaces and severely effect the rates of expansion. You

also

> have to be very careful of environmental issues regarding foam blowing.
>
>
>
> Really think this through and do some manual tests before you spend a
> fortune on a control systems and find you cannot gain an acceptable

final

> result.
>
> Be very sure what you are providing will meet the customers needs,

and get

> the customer to accept this.
>
>
>
> Dr. Mark Vaughan Ph'D. B.Eng. M0VAU
>
> Managing Director
>
> Vaughan Industries Ltd, reg in UK no 2561068
>
> Water Care Technology Ltd, reg in UK no 4129351
>
> Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
> Phone/Fax 44 1872 561288
>
> RSGB DRM111(Cornwall)
>
> _____
>
> From: CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>

DRO@yahoogroups.com

> [mailto:CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>

DRO@yahoogroups.com] On Behalf Of Filipe Tomaz

> Sent: 28 April 2007 10:44
> To: CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>

DRO@yahoogroups.com

> Subject: [CAD_CAM_EDM_DRO] Reverse CAD CAM
>
>
>
> Hello. I have a client that needs a small machine to inject material
> instead of removing it. Basically the machine will behave like a small
> mill, but it will not take chips off, it will inject foam (I think).
> The idea is to create objects in an empty space (no mold is present).
> The client will provide the 3D objects, so I was wondering what are
> the software that could take the 3D format (any popular format), and
> output ISO gcode for the machine to handle.
> Thank you from your time.
>
> Filipe
>
>
>
>
>
> [Non-text portions of this message have been removed]
>

[Non-text portions of this message have been removed]