Re: [CAD_CAM_EDM_DRO] Vinyl Cutting Algorithms

Rab,
Typically, the blade is not centered. It is offset about 0.1-0.2 mm from the
center.
This offset would allow the knife to swivel/ turn every time it changes
direction.
Beside, how about your knife? do you buy it or make it by yourself?

I have two vinyl cutting machine that was driven by Gecko. The mechanical
part
was build using chinese brand vinyl cutting machine. It uses stepper motor.

fortino

----- Original Message -----
From: "rainnea" <rainnea@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, July 17, 2003 7:30 AM
Subject: [CAD_CAM_EDM_DRO] Vinyl Cutting Algorithms


> I've added drag-knife vinyl cutting capability to my CNC Toolkit,
> however it encounters a problem when the blade direction makes a
> complete about turn of, or near to 180 degrees as often the drag
> blade wont turn by itself and ends up going backwards for a while,
> ruining the cut.
> I'm considering various approaches to add an extra movement to help
> the blade turn into the cut, just wondering if this is something
> anyone else has come across before ?
>
> thanks,
>
> Rab
> http://groups.yahoo.com/group/CNC_Toolkit/
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