Inverse Feed rates to fast

[Sandybar]

I'm fairly new to the rotary 4th axis machining and it appears to me that the rotary is going way to fast. I have check in the post this line:

 

use_frinv : 1 #Use Inverse Time Feedrates in 4 Axis, (0 = no, 1 = yes)

 

I have switch use inverse on. However in between G94 and G95 when switching to inverse it seems to scream. What am I missing?

 

Thanks

[mayday]

you need G93 for inverse time not G94/G95

then you should get an F code on each line. Most times I run max at F10000 based on the size of the arc and or spline lenght

[Sandybar]

Do I need to change the post to read G93?

[Sandybar]

I change to G93 and machine alarms out. "Improper G-Code"

 

Have Fanuc controls on a Mori Sieki with a Nikken Rotary.

[Joe788]

Sandybar, are you sure your machines have the inverse time option?

[Sandybar]

I will check but I thought that what the tech who set it up said.

[shazam/TPP]

Sandy, it does when you buy the option. i have a Fanuc 18imb and it does not come standard. talk to your sales rep, it's well worth it. Strange how our Fadal's came standard with G93 and Fanuc does not

[Sandybar]

Okay I found out that the inverse is not set up in the machine tool. so I went back to G94 G95.

 

Okay can I ask another 4th axis question. The move to the first position is G1 instead of G0 How can I change this so it does not feed to first position.

 

Thanks