Lathe post, feedrate problem

[nickz]

I am having a problem with the output of C-Axis Face-Contour operation. The feedrate is output on every single line and is also different, example:

T0101(ENGRAVER)

M98P9002(MILL MODE)

G00X30.086Z1.

C26.362

G97S2500M13

G01Z-.15F150. <---- only needed here

X29.93C26.32F80.

X29.781C26.226F179.9

X29.642C26.081F275.5

X29.52C25.891F363.5

X29.417C25.66F440.6

X29.337C25.395F503.7

X29.282C25.101F550.7

X29.255C24.792F579.2

etc.

Any advise?

Thank you.

[ 09-13-2001: Message edited by: nickz ]

[Reece L Gibson]

What Type of Control,and does your machine run in inch per min, or in deg per min when running the C Axis Contour?

Some Controls will convert it for you.

[nickz]

The control is a Hitachi Seiki SEICOS LIII, and we run feed/min for the C-axis contour. Works great, just need one feed call, not on every line.

[gstephens]

Find this section in your post and make sure ipr_type is set to 0

#C-axis variables for calculations

.

.

ipr_type : 0 #Feedrate for Rotary, 0 = UPM, 1 = DPM

.

.

[Reece L Gibson]

I am running a Hicell also, Fanuc 18T, what post are you using?

[nickz]

Millturn,

The machine is a Hitachi Seiki HT25R with a SEICOS LIII control. The post is a generic Fanuc post with C-axis capability. It is post processor problem. I believe it has something to do with modal settings?

[ 09-17-2001: Message edited by: nickz ]

[Reece L Gibson]

Does it have a Y axis ,or just a C axis?

Does it have the Polar option turned on?

Are you inserting G121, G120, all the misc M codes by hand to get the C axis active?

[nickz]

No Y-axis,

No Polar-Interpolation,

What you see in my first forum posted message is exactly what I get from my (modified) post-processor. The M98 call for P9002 is where the C-axis engagement is located. This macro was created by the Applications Engineer when the machine was installed.

[ 09-17-2001: Message edited by: nickz ]

[Reece L Gibson]

Nick, I am going to E-mail a post I have changed to keep the feedrate from being out put at every line (DPM)

Let me know if this is what you want.

Just post your NCI to it (the post I sent you) and if you like it ,open it up and see where I have made the changes and change yours to match mine.

[nickz]

Thank you, I will check it out.

[Reece L Gibson]

You are Very Welcome!