cutter comp

[Hawkman]

Does anyone know how to turn on cutter-comp to cut keyways?. Lets say you have a 1 inch keyway and a .750 EM. Does'nt the cutter have to travel at lease half the dia. distance in X and Y direction? How do you do this when their is no room.

[Guest]

Welcome to the forum

 

 

Are you using control comp or are you using wear comp?

[Hawkman]

I am using cutter- comp

[Hawkman]

I am using cuttercomp.

[Guest]

When using control comp, more than half is the rule of thumb.

 

Do you add half the diameter of your cutter into the offset ot do you just adjust the offset to get size?

[crazy^millman]

Well there are a couple ways to apporach this. If you want to use cutter comp on the control then you will want to select the 1st move above the cut and the last move above the cut in the entry/exit options on the lead in/lead out. Now if you use wear you then have a cutter that can be .0002 in dia to the control and only need .0001 to turn on the cutter comp. Now the thing to remember about using wear is that you need to have your comp move or lead in/out amount greater than what you would put in the control to adjust the cutter but still small enough to fit into the are you are cutting with the tool.

 

HTH

BTW welcome to the forum.

[Thad]

How about turning comp on in a move along the length of your key? Unless your key is less than 1" long...

 

Welcome to the forum!

 

Thad

[Fig sign]

If you use old Fanuc controller like 6 or 0 do not use the 1st move above the cut and the last move above the cut in the entry/exit or you`ll scrap the part (checked )

http://www.emastercam.com/cgi-bin/ultimate...t=020984#000000

[Gramby]

Select a point "your entry loaction" in the keyway then do a chain. The chain start point needs to be perpendicular to the entry point.

Break it if it is not. In the "Leadin/out" parameters page put a 0 in all the feilds. You then need to besure that 4 things are checked. Entry, Exit, Use entry Point and Use exit point.

Using this method you can put a tool down in a hole or slot and turn comp on with only .0001 clearance.

Ocasionaly you may prefer to arc in a little. Do the above but then add value slightly bigger then the tool radius to the Arc Radius feild in the leadin/out parameters page. This would depend on wheter your using Control comp or Wear comp.