I need to make some 52mm diameter holes through 304 stainless steel in my VMC.
The material is a 250mm radius 20mm thick disc.
The fixture is untested (custom-built jaw expansion for the vise) so stability may be suboptimal. I may have some ideas how to make it better.
I have at my disposal a 52mm Trigon insert drill. I have also considered ramping with a Seco 32mm high feed face mill and spiraling with an Iscar 16mm 7 flute endmill (which I don't have at the moment.)
Other than that I have a pretty wide assortment of solid end mills though none really perfect for the job.
We're talking 5 discs and then 200 more if we get the contract. If we do these will probably be a mainstay.
What would you suggest? Namely: How slow can you go with a 52mm insert drill? Tips for combating poor stability and reducing vibrations?
The material is a 250mm radius 20mm thick disc.
The fixture is untested (custom-built jaw expansion for the vise) so stability may be suboptimal. I may have some ideas how to make it better.
I have at my disposal a 52mm Trigon insert drill. I have also considered ramping with a Seco 32mm high feed face mill and spiraling with an Iscar 16mm 7 flute endmill (which I don't have at the moment.)
Other than that I have a pretty wide assortment of solid end mills though none really perfect for the job.
We're talking 5 discs and then 200 more if we get the contract. If we do these will probably be a mainstay.
What would you suggest? Namely: How slow can you go with a 52mm insert drill? Tips for combating poor stability and reducing vibrations?