Post doesn't support feed per rev

[lance_heskett]

Hi everyone, I am having an issue with the generic Mazak mill post. I have my tapping cycles turned on to use feed per revolution and when I create the NC program, I have use pitch for tapping turned on. But when it posts it is saying this post processor does not support feed per rev. Am I doing something wrong or is it the post? If this is a common problem would anyone know what to change in the post? 

[a.laasW8M6T]

Hi

I have tried this with several versions of the Mazak Post and it appears to work correctly.

What version of the Generic post are you using?

There was a new version released yesterday so it might be worth trying that.

If that still isn't working can you share a sample part that exhibits the error.

Export it from Fusion and attach to a reply here.

[lance_heskett]

I am using the Mazak mill post version 44131. The feedrate is correct as far as the pitch but it refuses to insert G95 instead of G94. I know its a simple fix but something this simple should be correct. 

N10 G90 G94 G17 G49
N15 G20
N20 G53 G0 Z0.

(TAP 6-32)
N25 T4 M6
N30 S1000 M3
N35 G90 G94 G17
N40 G54
N45 M8
N50 G0 X0.1784 Y-0.4687
N55 G43 Z0.64 H4
N60 G0 Z0.24
N65 G98 G84 X0.1784 Y-0.4687 Z-0.38 R0.2 F0.0312
N70 Y-1.2187
N75 G80
N80 G0 Z0.64

N85 M5
N90 M9
N95 G53 G0 Z0.
N100 G49
N105 M30

[lance_heskett]

I just tried out the code in the machine and to my surprise it seems like the G84 defaults to feed per rev without the G95 present. I used the same code I replied with, and the RPM was 1000 and the FPR .0312. While watching it the active feedrate became F31.2. I didn't know it could do this and since it did, I am not sure why fusion was giving me the alarm that says it can't support it. 

[viacheslav.shapilov]

I suspect, current Mazak post does not formally supports Feed per revolution drilling/tapping specified on Fusion side. It effectively ignores this setting and works in backward compatibility mode. In this mode post processor converts feed per revolution back to feed per minute. But when you use `usePitchForTapping` option in the post, it will use pitch instead of feed for tapping cycles. Which effectively acts like Feed per revolution.