Cogsdill back chamfer

[Shawn Wentzel- Wenteq Inc]

I was wondering how you normally program a Cogsdill back chamber tool. I have to feed into a hole without the tool turning because of the geometry. It is a spring loaded insert style.

[Shawn Wentzel- Wenteq Inc]

I figured a way to do it. I used a bore cycle that stopped the spindle before retracting. (G86 cycle) I set the retract to -0.05" inc and the depth higher than underside of part. The only hand editing I had to do was on the previous drill, remove the M05 at the end of the tool and the M03 of the beginning of the back chamfer. Works perfect.

[Craig-B]

You could create a custom drill cycle in your post called Back Chamfer and call it just like the other drill cycles. There are several sample of custom drill cycle here on the form just do a search

[huskermcdoogle]

You could create a custom drill cycle in your post called Back Chamfer and call it just like the other drill cycles. There are several sample of custom drill cycle here on the form just do a search

 

Something like this!

 

:0645(COGSDILL SUBROUTINE) 
(FORMAT G66 P0645 XLOC YLOC R C - D B - E F-FEED)
#29=#5003
G00X#24Y#25
N10G00Z#3(MOVE TO CUTTING START PLANE - VARIABLE C)
G01Z#7F#9(FEED TO FIRST CUTTING END ZONE - VARIABLE D) 
G01Z#2F250.(MOVE TO BOTTOM POSITION - VARIABLE 
G01Z#8F#9(FEED UP TO END OF BOTTOM CUTTING - VARIABLE E) 
G00Z#18
M99

 

edited into this

 

:0645(COGSDILL SUBROUTINE) 
(FORMAT G66 P0645 XLOC YLOC R C B E F-FEED)
#29=#5003
G00X#24Y#25
G00Z#3(MOVE TO FEED START PLANE - VARIABLE C)
G01Z#2F250.(MOVE TO BOTTOM POSITION - VARIABLE 
M03 (SPINDLE START)
G01Z#8F#9(FEED UP TO END OF BOTTOM CUTTING - VARIABLE E) 
G00Z#18
M99

 

Program Call

 

"Tool start"
G66 P0645 X[first pos] Y[first pos] R[retract clearance height) C(start ofslow feed) B(bottom start feed pos) - E(final feed pos) F(Feedrate)
X[second pos] Y[second pos]
so on so forth
G67 (modal cancel)

"end of toolpath"

 

Good luck. If you wanted to roll the above into a custom gcode it would be pretty easy.

 

Husker

[andate caga]

I made a custom tool path and translated it.