Re: [CAD_CAM_EDM_DRO] Latest Design Created with my SherlineCNC

You may want to disable the accelerating and decelerating, by using software
that "looks ahead" and will eliminate most of this, the results are smoother
cutting with faster cutting times.

RC

----- Original Message -----
From: Dan Statman <dan.statman@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, May 31, 2002 5:33 AM
Subject: Re: [CAD_CAM_EDM_DRO] Latest Design Created with my SherlineCNC


> Yes, I am using Sherline's rotary table. For software, I draw a single
> unit of the pattern in Vector and generate the G-Code for that
> pattern. I then take the G-Code and copy it to a spreadsheet (Excel).
> From th spreadsheet, I can extract relevant X and Y data points which
> can then be scaled and repeated using simple mathematical manipulations
> of the data. Once I have all of the pattern created on a 360 degree
> rotational axis, I have another macro that creates G-Code directly in
> Microsoft Word from the Excel spreadsheet. Takes about 5 minutes after
> Vector creates the initial G-Code.
>
> It takes so long to engrave since I am using a 0.015" endmill spinning
> at a relatively slow 10,200 RPM while trying to cut grade-5 titanium.
> In order to acheive the depth of cut the pattern is repeated three
> times. I set the feed rate to 0.5 IPM, but since it is on a rotary
> table the exact speed is unknown. Given the short interval between
> segments, I do not think the machine ever reaches the full speed
> setting anyway since it is accelerating and decelerating all of the
> time. I am not in the least bit concerned with the speed of cutting,
> since I have plenty of handwork that I do on other projects while these
> are being cut.
>
> Dan.
>
>
> ----- Original Message -----
> From: "RC" <asdf@...>
> Date: Friday, May 31, 2002 11:31 am
> Subject: Re: [CAD_CAM_EDM_DRO] Latest Design Created with my Sherline
> CNC
>
> > Very nice work! I do have a few questions, are you using
> > Sherline's rotary
> > with conjuntion with you mill, and what are you using to for
> > software? I
> > was also wondering why it take so long to engrave the ring, and
> > what feed
> > rate you were using? material used?
> >
> > RC
>
>
>
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