Cutting O-Rings

[ALEX888]

I am trying to develop a method for cutting :bandhead:0-rings with out editing code to get the desired tool path.

Our o-rings need a good finish with out any tool entry marks so deburr can easily put a 16 finish circular lay pattern down. There must be a simple way to program a .200 wide o-ring using a 3/16 end mill with lead in and out’s with out spindle up and downs that won’t leave tool marks. Help I hate to hand edit my tapes Mastercam please put in a “ o-ring” button

 

 

Alex

[Keith Graydon]

Hello alex888,

welcome to the forum

 

use a radius on lead/in-lead/out large enough so the tool will gently pull off the walls of the groove and set the angle small enough so that the tool doesnt hit the opposite wall when it swings out. .012 isnt much room. Dont use a straight leadin-leadout.

hth

-Keith

[ALEX888]

Keith your correct about that .012 will not leaving much wiggle room a 5/32 tool would be a better choice.

It’s the whole operation that’s driving me crazy. To ramp down lead in to one wall climb cut around then lead over to the outer side climb cut that side and lead out with out any spindle up downs

[Mcam Nut]

I always use about a .002 ramp on my leed in/out, this will create no leadin marks

 

hth

[mcpgmr]

Somtimes I draw the custom geometry for this. I like to lead in at angle of .5 to 1 degree on my finish pass on the walls without a radius move. First I straight down the middle with the largest cutter I can get in the groove leavin .005 or so on the walls but finish the floor and the run a finish pass like I described and maybe a spring cut with higher rpm same chip load. Works good in Aluminum. HTH!