4th axis feeds

[mxdan]

I am making embossing wheels,3"round 1"wide with

various designs , logos , printed text ,made out of brass for embossing on leather, anyway my problem is, when I post there seems to be a feed rate on almost every command, as high as (for example)256.371 to as low as .12-.03-.38 its these low feed rates that are the problem, when the machine reads the low feeds it seems like it comes to a complete stop, I dont think this is correct , does all this make sense? I'm still new to this mastercam stuff ,but I'm catching on

Thanks

Dan Robbins

Coastal Pet Products

[YoDoug®]

It sounds like your post is outputting degrees/minute. That's why you get all of the feedrates. As far as the low feedrates, What kind of toolpath are you using? If it is a toolpath that is using a rotary axis substitution make sure you have the correct diameter specified.

[mxdan]

I am using a rotary axis substitution and my diameter is correct 3", The posts seem very long

here is an example of a few lines

 

X.5459 A24.42 F184.75

X.5315 A24.864 F156.74

X.5159 A25.225 F126.45

X.5311 A25.738 F166.46

 

does this help any? I have made 3 of these wheels and they seem ok, within specs

[cadcam]

look to the start and make sure there is a G93 activating the inverse time so this will not be the true feed rates.

[mxdan]

G93? no I do not see one

[cadcam]

then in that case it's going to try and run that fast

Add a G93 to turn on the inverse time and G94 to turn off. or adjust the post to not use inverse time.

[mxdan]

could the G93 be on and I just can't find it?

I have run a few of these wheels and the machine runs fine until it reads a low feed then its like the machine has come to a stop, I have went back into the post and changed the low feeds to a higher one (6.123) and it will run better

is this a good thing or am I really screwing things up?