Re: Cam track help!

Dan,
I think we have hit the nail on the head , what you call simple is to
me (read brain dead with maths) is difficult , can you generate the
code for me please...... would be ever so grateful.... See i am just
learning this cnc stuff and need a real kick along!!!!!!
thanks
Mark--- In CAD_CAM_EDM_DRO@y..., "Dan Statman" <dan.statman@r...>
wrote:

> Mark,
>
> For this simple of a geometric shape around a perfect cylinder just

use a

> spreadsheet and generate the code by hand.
>
> If your rotary table is setup vertical to the table and aligned

with the

> y-axis so that movements towards the edge of the wave are in the
> x-direction, I like to set my x=0 point to the middle of the curve.
>
> Go into Microsoft Excel (or any other spreadsheet that you like) and
> generate a column of numbers for the rotary axis from 0 to 360

degrees,

> using whatever step increment you like, I prefer 1/2 degree steps.

From

> these degree values calculate the X-values by using the formula for

a SINE

> wave specific for your amplitude (pitch?) and number of periods.

The

> formula is amplitude*SIN(Pi*degrees*periods/180/), and generate an

X-value

> for each degree value.
>
> Add columns for the axis designators: X and A and this is your G-

Code for

> the movement around the cylinder. You have to specify the depth of

cut with

> a Z-axis move prior. For the opposite wave just make another

column that is

> the negative of your first wave.
>
> Copy all of the cells and then paste into a text editor and save

your G-code

> file.
>
> If you need more explicit instructions, or would like me to

generate the

> code for you in 5 minutes, just ask.
>
> Daniel J. Statman, Statman Designs
> www.statmandesigns.com
>
>
> ----- Original Message -----
> From: "markpowerplus" <mabw@b...>
> To: <CAD_CAM_EDM_DRO@y...>
> Sent: Tuesday, August 20, 2002 5:13 PM
> Subject: [CAD_CAM_EDM_DRO] Cam track help!
>
>
> > Morning all!,
> > Can anyone help me ,i need to machine a double sine wave around a
> > 1.630 dia tube. I am using Featurecam 5 and cncpro on my 4 axis
> > mill . I just cannot seem to be able to produce the nc code to do

it.

> > The groove (slot?) needs to be .375 wide and .312 deep with a

pitch

> > of .680, who can show/tell me how to do it ?
> > thanks
> > Mark
> >
> >