09-17-2015, 09:28 PM
My next issue is where to get a suitable arbor for the F4080. The F4080.B16.050.Z04.03 designation is that it has a metric bore of 16mm. My mill has a R8 spindle and I have been able to find two R8-16mm Face mill arbors from the UK.
However My mill takes a lot of cranks to raize and lower the head and a R8 arbor requires a lot of travel for removal. General a pain in the butt!!!!!
For this reason I have adopted the Tormach quick change tooling system even though the mill is not CNC. The Tormach system uses a short 3/4 " tool shank that fits in a 3/4" R8 collet.
Unfortunately Tormach do not make a 16mm arbor ( only 1/2") and I cannot obtain a 16mm Arbor from my Chinese Supplier who can only supply the more common 22mm version. see Photo
I therefore seem to have only four options
1 Purchase a R8-16mm arbor and put up with the long shank and considerable winding to move the head up and down. Not a good option in my view.
2 Machine a 22mm Tormach Chinese copy arbor down to 16mm. This is not really practical as the attachment screw for locking the Mill head is 10mm and won't fit through the F4080. When I machine the 22mm down to 16mm and sleeve the thread down to 8mm there won't be a lot of steel left to support the Mill head.
3 Purchase a Genuine Tormach Arbor blank and make my own arbor.
This is possible but I don't have a surface grinder to fine finish the mounting shank for the mill head. Would a turned arbor be accurate enough for this purpose?
4 Purchase a Genuine Tormach 1/2" facemill arbor and sleeve it to 16mm
.
This seems the most suitable option.
What do members suggest?
Ron
However My mill takes a lot of cranks to raize and lower the head and a R8 arbor requires a lot of travel for removal. General a pain in the butt!!!!!
For this reason I have adopted the Tormach quick change tooling system even though the mill is not CNC. The Tormach system uses a short 3/4 " tool shank that fits in a 3/4" R8 collet.
Unfortunately Tormach do not make a 16mm arbor ( only 1/2") and I cannot obtain a 16mm Arbor from my Chinese Supplier who can only supply the more common 22mm version. see Photo
I therefore seem to have only four options
1 Purchase a R8-16mm arbor and put up with the long shank and considerable winding to move the head up and down. Not a good option in my view.
2 Machine a 22mm Tormach Chinese copy arbor down to 16mm. This is not really practical as the attachment screw for locking the Mill head is 10mm and won't fit through the F4080. When I machine the 22mm down to 16mm and sleeve the thread down to 8mm there won't be a lot of steel left to support the Mill head.
3 Purchase a Genuine Tormach Arbor blank and make my own arbor.
This is possible but I don't have a surface grinder to fine finish the mounting shank for the mill head. Would a turned arbor be accurate enough for this purpose?
4 Purchase a Genuine Tormach 1/2" facemill arbor and sleeve it to 16mm
This seems the most suitable option.
What do members suggest?
Ron
ronboult, proud to be a member of MetalworkingFun Forum since Aug 2013.