I think the fundamental problem with that kind of setup is going to be rigidity. I
wouldn't want to mount anything as heavy as a 4-jaw on the end of a drill chuck arbour,
especially if I then planned to mount a piece of 3/4"-1" stock on the end of THAT to turn
down. It would be a complete waste of time - the arbour would be way too flexible for
anything more than the lightest of cuts.
] On Behalf Of
Sent: 30 April 2009 17:22
Subject: [taigtools] Re: Mounting Lathe Chuck on CNC Mill
I hadn't thought of that. I have the Taig 4-jaw chuck, though, and I think I would feel a
bit squeamish about drilling holes in the back of it to mount a back plate.
What about something like the Drill Chuck Arbor (1140ER) except with a 3/4"-16 male
threaded portion instead of the 3/8-24" stock portion. That would be a one piece solution
(like the backplate idea), but would not require me to drill and tap the chuck.
Thanks for your helpful advice!
--- In email@example.com, "Tony Jeffree" <tony@...> wrote:
> The thread on the nose of my Taig ER16 headstock appears to be the standard ER16 chuck
> thread, which is metric - 22mm X 1.5mm pitch. Personally, I wouldn't go the adapter
> - a better approach would be to machine up (or have machined up) a backplate to fit the
> 22mm X 1.5mm nose, and then attach the 4-jaw to that (either the standard Taig one -
> it for mounting bolts - or a 3rd party one designed for backplate mounting).
> -----Original Message-----
> From: firstname.lastname@example.org [mailto:email@example.com] On Behalf Of
> Sent: 30 April 2009 16:29
> To: firstname.lastname@example.org
> Subject: [taigtools] Mounting Lathe Chuck on CNC Mill
> What would be the best way to mount a lathe chuck onto my CNC mill spindle (ER16)? I
> the Taig CNC mill and a rotary table with a 4-jaw chuck. I have also experimented with
> holding small diameter rods in the milling cutter collets and cutting with a lathe tool
> held in a vise fixed to the table with very promising results. Naturally, I would now
> like to be able to cut larger diameter stock in the same fashion. Nothing crazy - but
> something in the range of 3/4" to 1" in diameter.
> In researching previous threads, it was recommended that a solution may be to purchase
> lathe headstock with the proper nose threading and swapping that in for the milling
> headstock. Has anyone actually tried this? Would the lathe headstock fit nicely on the
> axis carriage?
> This solution, while it may work, seems a bit too complicated to me. What I had in mind
> was more of an adapter to mount the chuck onto the spindle. Here's my proposed
> a 3/8" shaft on one end with the proper threaded section (I think it is 3/4"-16) and a
> larger flange on the other end for attaching the chuck. I know it won't run perfectly
> true, but that is theoretically what the 4 independent jaws are for. I know that too
> run-out leads to vibration issues, but a little bit would probably be tolerable, I'm
> Has anyone succesfully tried anything like this? Any critiques of my adapter idea?
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