TAPPER !

[taylor500s]

I'm running version 9 yet.....Is there any way to adjust tapper in mastercam lathe without changing geometry ??

[crazy^millman]

Not that I am aware of. You can copy the geometry to another level make the adjustment and then rechain. That way you have the change you need yet keep the original geometry.

 

HTH

[lowboy]

Change at point,change the X dim of an endpoint in a tool path without changing geometry.

[chris m]

If you need to cut a taper, why wouldn't you adjust the geometry? In my opinion the Mastercam geometry should reflect what the machine actually makes. Otherwise I'd take a shot at lowboy's method.

 

C

[Leif Johnson from MICO Inc]

I really prefer using a U so the operator can adjust for taper depending on the machine. Keeps me from having to maintain all of the programs. Just be sure that everything after that is incremental.

 

Leif

[Keith Graydon]

Go with what Chris says. Or, Use a secondary offset at the control to adjust taper.

 

-Keith

[crazy^millman]

I see a bad habit if you start adjusting change points like that. If you have other things going on past this point you run the risk of getting a gouge or something the machine is not going to like. If you do it using geometry then you are sure that what you get out on the machine is what you want.

 

I will however recommend you have the machine checked. All CNC lathes should be able to cut a part with a tail stock and do it cutting a straight part. The exception being skinny or very long parts and you can not use a follow rest, 2nd turret, or Steady rest. If it is a smaller part then your spindle could be out and can be fixed as well. Most times you put a 4" dia x 14" long piece of aluminum in the machine and take a test cut and adjust the headstock until the taper is out. If always cutting steel then I would use steel for my test piece to allow for the tool pressure that steel will have over the aluminum.

 

This is just my thoughts on this.

 

[ 07-31-2007, 09:01 AM: Message edited by: Crazy^Millman ]

[billystein]

the other point that i have come across is a machine that has been crashed a few times and the ways have moved. they take a while to adjust but i wouldn't be afraid to loosen them and adjust small areas.