cant do a simple tap in mastercam x3

[checovv]

when i try to make a tap let's say 1/4 20 , i select "drill" in tool type and in cut parameters under "cylce" i select tap with a 600 RPM
but for some reason when i post it gives me a Feedrate of 30 instead of a .05 and also theres missing "G" and "M" codes like G95 , G94 and M29.
does anyone can help a little.? when i use mc9 i dont have problems at all .

[foxsquirrel]

You need to select the rigid tap cycle from the drop down, if memory is correct drop down box contents depend upon your machine config file. So, if your machine does not support rigid tapping it might not have that option. What post are you using and can you post a screen shot of what your working on. Using the generic mill post, under cylce drop down box select tap, and select a tap from the tool library. That will produce a G84 cycle, so if you can do it with that post it might be the post you are using does not have rigid tap.

[Superman]

Originally Posted by checovv when i try to make a tap let's say 1/4 20 , i select "drill" in tool type and in cut parameters under "cylce" i select tap with a 600 RPM but for some reason when i post it gives me a Feedrate of 30 instead of a .05 and also theres missing "G" and "M" codes like G95 , G94 and M29. does anyone can help a little.? when i use mc9 i dont have problems at all .

A feedrate of 30"/minute at S600 is 0.05"/rev
RPM x feed/rev = feed/min
600 x 0.05 = 30
so a F30 for a 1/4" UNC @ S600 is correct when a G94 is active, and you would use a "floating tap holder", M29 is for rigid and the tap could go into a collet chuck

Your post may require the correct "tooltype" ie. Tap_RH, to have the correct codes output.
The idea of defining the tools correctly, and have the post give the correct codes required for each machine, is, when you change the CNC_machine to post the operations, the NC file is correct for that selected machine
One machine may be a fanuc with rigid tapping and require a G84.1, the next might be an Okuma and use a G284 with feed/rev and another may only use a floating holder and use feed/minute...it is all done by having a seperate post for each machine....setting a rigid tap cycle doesn't come into it...it's how the post is done for each type of cycle