Chamfering hole

[classictom]

Not sure if this the right area of the forum but here goes. I need to chamfer a .632 dia. hole that is crossed drilled on a 1.500 dia. (.010 chamfer all the way around) This involves the Y,Z and C axis working simultaniously. I have no idea how to program this. I do not have access to a cad program. I am running this on a Eurotech lathe with a Fanuac controller. Any help will be greatly appreciated. The hole center is Y0,Z-2.025.

Tom

[Palerider]

If you have leeway on the angle of the chamfer to the hole it seems to me you could do this with only a C,Z simultaneous move.

[ProProcess]

Palerider is right, if you only need a break and not a consistant angle all the way around, you can use C,Z. More specifically you would use Milling Interpolation[Option] and the G16 Cylindrical Plane. Then it would be simple G2/G3 and the control does the calculation (interpolation) for you.

Otherwise, courtesy of Kiwi post #7,Here is a CNCForums link that may be able to be tweeked to generate some hard code for you.

HTH
Good luck!

[dcoupar]

This might do the trick. It's for a 3/8 X 90 chamfer mill

G18 G97 G98 S4000 M33
M90
G0 C-.012 M88
G0 Z-1.8065
X1.7 Y.0011 M08
G1 X1.32 F32.
Y0 Z-1.7865
Z-1.7878 C-1.9434
Z-1.7916 C-3.8532
Z-1.798 C-5.7324
Z-1.8055 C-7.3237
Z-1.8165 C-9.1085
Z-1.8306 C-10.8945
Z-1.8459 C-12.4791
Z-1.8604 C-13.7281
Z-1.8779 C-14.9924
Z-1.8992 C-16.2665
Z-1.9191 C-17.2397
Z-1.9383 C-17.976
Z-1.9585 C-18.5654
Z-1.9835 C-19.0707
Z-2.0091 C-19.3487
Z-2.0307 C-19.4054
Z-2.0522 C-19.2946
Z-2.0777 C-18.9139
Z-2.1025 C-18.3077
Z-2.1223 C-17.633
Z-2.1594 C-15.8356
Z-2.1969 C-13.1362
Z-2.2116 C-11.7585
Z-2.2269 C-10.0025
Z-2.2397 C-8.1466
Z-2.2484 C-6.5253
Z-2.2558 C-4.679
Z-2.2603 C-2.9488
Z-2.2628 C-1.1958
Z-2.2632 C.5695
Z-2.2609 C2.6263
Z-2.2567 C4.3746
Z-2.2504 C6.081
Z-2.2421 C7.7419
Z-2.2311 C9.4515
Z-2.2172 C11.1594
Z-2.2014 C12.734
Z-2.1866 C13.966
Z-2.1691 C15.1881
Z-2.1476 C16.4388
Z-2.127 C17.4039
Z-2.1075 C18.1117
Z-2.0662 C19.0743
Z-2.0405 C19.3502
Z-2.019 C19.4049
Z-2.0018 C19.3335
Z-1.9762 C18.986
Z-1.9513 C18.4134
Z-1.9314 C17.7708
Z-1.894 C16.0325
Z-1.8566 C13.4353
Z-1.8282 C10.6459
Z-1.8149 C8.8727
Z-1.8053 C7.2669
Z-1.7972 C5.4997
Z-1.7913 C3.6809
Z-1.7877 C1.8433
Z-1.7865 C-.012
Y-.0012 Z-1.8065
N60 G0 X1.7
M9
G28 U0
G28 W0
M30

[chucker]

I drillalot of cross holes on round stock and use a tool called Heule it has aspring loaded insert in it and will follow the couture of the od and id on round parts check the link below and see if this will help you

http://www.heuletool.com/index.aspx?page=cofa_home

[chucker]

I drill alot of cross holes on round stock and use a tool called Heule it has a spring loaded insert in it and will follow the couture of the od and id on round parts check the link below and see if this will help you

sorry it got posted 2 times

http://www.heuletool.com/index.aspx?page=cofa_home

[PinMan]

Originally Posted by chucker I drillalot of cross holes on round stock and use a tool called Heule it has aspring loaded insert in it and will follow the couture of the od and id on round parts check the link below and see if this will help you http://www.heuletool.com/index.aspx?page=cofa_home

Thanks a ton for this info, this is the exact type of tooling that we need