Whetstone
Cast Iron
- Joined
- Mar 27, 2011
- Location
- Providence RI
I need to make a batch of 300-400 spindles for a custom stair I’m building and can’t find an off the shelf part that works with the design. I need to taper 3/4” 1018 bar down to 1/2” over about 30”. Because of the slope of the stair I’ll need two different angles as the taper length changes coming down the stair and I want to keep the start abs stop details the same. In an ideal world I could control taper as needed (turning) vs ridged tooling (forging/swaging)
I’ve though about forging these with a power hammer, but need a more machined surface finish.
What kind of equipment make the spindles at a place like Julius Blum or King Architectural?
So far the processes I’ve come up with are
Cnc lathe with some sort of steady rest to turn the taper abs then clean up the steady rest area as a second op with custom jaws to hold taper
Manual lathe with offset tail stock and steady rest to machine taper. Same second op as above
Large swaging machine, I do t know enough about the process to know what involved or what type of tooling is needed to get such a long taper.
I know similar sized and shaped parts are made and sold so feel there has to be a better process than turning. When I get in the office later today I’ll try to post a link.
Sent from my iPhone using Tapatalk
I’ve though about forging these with a power hammer, but need a more machined surface finish.
What kind of equipment make the spindles at a place like Julius Blum or King Architectural?
So far the processes I’ve come up with are
Cnc lathe with some sort of steady rest to turn the taper abs then clean up the steady rest area as a second op with custom jaws to hold taper
Manual lathe with offset tail stock and steady rest to machine taper. Same second op as above
Large swaging machine, I do t know enough about the process to know what involved or what type of tooling is needed to get such a long taper.
I know similar sized and shaped parts are made and sold so feel there has to be a better process than turning. When I get in the office later today I’ll try to post a link.
Sent from my iPhone using Tapatalk