----- Original Message ----- From: "Bill Payter" <[EMAIL PROTECTED]> To: "Nigel Webb" <[EMAIL PROTECTED]> Sent: Tuesday, July 08, 2003 1:06 PM Subject: Re: [mfg-smartcam] Centroid tool compensation
> Nigel, > > How much do you know about the machine? Are you sure G3 is a CCW arc? Are > you sure the I & J values are absolute not incremental? Just trying to > eliminate all possibilities? > > Regards, > > Bill. > > ----- Original Message ----- > From: "Nigel Webb" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Tuesday, July 08, 2003 11:59 AM > Subject: RE: [mfg-smartcam] Centroid tool compensation > > > > Bill, > > > > I tried the following > > (12mm Dia tool) > > > > N7 G0 X-11 Y23 > > N8 Z25 M8 > > N9 Z21 F1500 > > N10 G1 Z15 F300 > > N11 G41 Y14 F1500 > > N12 G17 G3 X0 Y25 I-11 J25 > > N13 G1 Y40 > > > > This went wrong! > > It should be a move down and then a 90 deg CCW arc to the edge of the > > profile except it moved down and then done a CW arc! > > > > It is explained by observing the first move down to Y14, it ended up > > with the centre of the tool at X-5. It applied the comp to the first > > line rather than at the end of the first line! > > > > It is a rather old (and odd) controller!! > > > > Nigel Webb > > Industrial Plastic Fabrications Ltd > > Tel 01992 893231 > > www.ipfl.co.uk > > > > > > > > -----Original Message----- > > From: Bill Payter [mailto:[EMAIL PROTECTED] > > Sent: 08 July 2003 10:21 > > To: Nigel Webb; [EMAIL PROTECTED] > > Subject: Re: [mfg-smartcam] Centroid tool compensation > > > > Nigel, > > > > What happens if the third line is an arc move instead of G1 Y50? > > > > Regards, > > > > Bill Payter. > > > > ----- Original Message ----- > > From: "Nigel Webb" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Tuesday, July 08, 2003 9:13 AM > > Subject: [mfg-smartcam] Centroid tool compensation > > > > > > > I'm having problems making a post processor for a :- > > > > > > Centroid CNC4-B24-MD3 > > > > > > The main problem is applying tool compensation G41/G42 > > > Most controllers if you do the following will apply comp OK > > > > > > Example 12mm Dia tool > > > G0 X11 Y25 (tool moves to x11 y25) > > > G1 G41 X0 Y25 (tool moves to x-6 y25) > > > G1 Y50 (tool moves up y axis) > > > > > > > > > If I do the same with the Centroid > > > > > > G0 X11 Y25 (tool moves to x11 y25) > > > G1 G41 X0 Y25 (tool moves to x-6 y31) ***DIFFERENT*** > > > G1 Y50 (tool moves up y axis) > > > > > > Has anybody solved this or does anybody have a post for a Centroid > > CNC4? > > > > > > Nigel Webb > > > Industrial Plastic Fabrications Ltd > > > Tel 01992 893231 > > > www.ipfl.co.uk <http://www.ipfl.co.uk> > > > > > > > > > ====================================================================== > > > To find out more about this mailing list including how to unsubscribe, > > > send the message "info mfg-smartcam" to [EMAIL PROTECTED] > > > ====================================================================== > > > > > > > > > > > > > > > > ====================================================================== > > To find out more about this mailing list including how to unsubscribe, > > send the message "info mfg-smartcam" to [EMAIL PROTECTED] > > ====================================================================== > > > > > > ====================================================================== > > To find out more about this mailing list including how to unsubscribe, > > send the message "info mfg-smartcam" to [EMAIL PROTECTED] > > ====================================================================== > > > > > > > > > ====================================================================== To find out more about this mailing list including how to unsubscribe, send the message "info mfg-smartcam" to [EMAIL PROTECTED] ======================================================================
