Hi all,

I just registered in this forum.
I need the literature or algorithm for CNC path interpolator for 2 axis or 3 axis machine.
The interpolator for making path of circular, stright line, helical, ellips, etc.
I only have read about DDA (Digital Differential Analyzer) interpolator for CNC. I heard about NURBS interpolator, Tustin Interpolator, etc.

Does anybody know about this and willing to share this topics?

Thank's + Regards,

Tr2000:)

Hallo,

I`m looking the same subjects as you. Have you got something?

send me an email, then we can discuss.

adrino

Are you trying to build a machine control or do you already have one? Does it have linear interpolation and does it use G codes? If you can feed it form a serial port and you can turn off accel/decel you can write a program to generate the moves. I used to machine volutes this way from an Apple II computer. I calulated a lot of straight line moves and offset them by the radius of the cutter.

Hi DonWhit

I use a Siemens 840 CNC in a machine center. I am researching in this field. I wonder if it is possible to implement a new interpolation in the CNC as one kind of spline (the siemens already implemented a polynomial equation).

The aim is to replace the linear interpolation used to describe free form tool path.

It is conventional CNC and it uses G codes.

If know any literature and contribute with my task, it would be grateful.

Thanks
Adriano