Clausing4900
Plastic
- Joined
- Oct 7, 2014
I am needing to create 10 adapter flanges from ductile Iron (65-45-12 Dura-Bar)
I don't deal with cast or ductile often and am limited to my Bridgeport and my 10" Clausing with a 6" 3-Jaw chuck.
First question is the surface finish in raw form. I do not plan (or have the capacity) to turn the OD down so im curious what the factory/mill finish looks like on this stock. The OD finish,diameter and concentricity are not critical, I would just like to know if it is a smooth finish or rough casting.
I plan to have 10 discs cut and shipped at 2.250" thick. Six will be at 8.250" OD the remaining four will be at 6.500" OD.
Four of the flanges will need a through hole of 2". The other 6 will need through holes at 3". Will an annular cutter handle this. I would drill a hole or two around the periphery to allow chips/swarf to fall free as evacuation may be troublesome when pushing through 2.250" of material. I do not have flood coolant available.
Next step would be facing each flange. I am not sure what method is used to cut these by the supplier but I'd imagine a bandsaw or cold saw. Most likely the faces will need trued up. I plan to grab the ID of my newly cut hole in my lathe chuck and gently face each with a Bullnose center pushed up to the rotating flange for safety.
One side of the each disc will have 6 blind tapped holes of 3/4x10 and the other side has 4 at 5/8-11 blind tapped holes, both sides tapped at 1.000" depth. Will rigid tapping/power tapping these work with a high quality spiral flute tap in this material?
Does this sound feasible; will annular cutters (2" and 3") live long enough in this material? How about the spiral flute tap?
I have a boring head for my mill if an annulalr cutter wont hack it.
Thank for any input or advice.
I don't deal with cast or ductile often and am limited to my Bridgeport and my 10" Clausing with a 6" 3-Jaw chuck.
First question is the surface finish in raw form. I do not plan (or have the capacity) to turn the OD down so im curious what the factory/mill finish looks like on this stock. The OD finish,diameter and concentricity are not critical, I would just like to know if it is a smooth finish or rough casting.
I plan to have 10 discs cut and shipped at 2.250" thick. Six will be at 8.250" OD the remaining four will be at 6.500" OD.
Four of the flanges will need a through hole of 2". The other 6 will need through holes at 3". Will an annular cutter handle this. I would drill a hole or two around the periphery to allow chips/swarf to fall free as evacuation may be troublesome when pushing through 2.250" of material. I do not have flood coolant available.
Next step would be facing each flange. I am not sure what method is used to cut these by the supplier but I'd imagine a bandsaw or cold saw. Most likely the faces will need trued up. I plan to grab the ID of my newly cut hole in my lathe chuck and gently face each with a Bullnose center pushed up to the rotating flange for safety.
One side of the each disc will have 6 blind tapped holes of 3/4x10 and the other side has 4 at 5/8-11 blind tapped holes, both sides tapped at 1.000" depth. Will rigid tapping/power tapping these work with a high quality spiral flute tap in this material?
Does this sound feasible; will annular cutters (2" and 3") live long enough in this material? How about the spiral flute tap?
I have a boring head for my mill if an annulalr cutter wont hack it.
Thank for any input or advice.