thread mill

I'm 99% sure that is not a tap. It is for large ID holes, lets say bigger than half inch. You would use it on a cnc mill. The thread mill would follow the circumference of the hole, while the Z axis moved down 1 thread pitch per orbit around the hole. In other words, the x, y, and z move continuously while the hole is being threaded..
 
You are correct sir... Curious if any one has tried this on a lam cutter to do threads?
 
JoeyInCali said:
That's still a tap but for a mill. Not a manual tap.
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Yikes, after looking at how it is used it would be a stretch to call it a 'tap'. They look the same and both can be used to create internal threads, but the threadmill can also produce external threads. Try that with a tap ;)

"Any three axis mill that is capable of helical interpolation can be used for thread milling. Helical interpolation involves three axes moving simultaneously. Two axes, 'X' and 'Y', move in a circular motion while the 'Z' axis moves in a linear motion."

see http://www.sct-usa.com/millhelp.asp for details.

Dave
 
DaveK said:
Yikes, after looking at how it is used it would be a stretch to call it a 'tap'. They look the same and both can be used to create internal threads, but the threadmill can also produce external threads. Try that with a tap ;)

"Any three axis mill that is capable of helical interpolation can be used for thread milling. Helical interpolation involves three axes moving simultaneously. Two axes, 'X' and 'Y', move in a circular motion while the 'Z' axis moves in a linear motion."

see http://www.sct-usa.com/millhelp.asp for details.

Dave
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My bad.
But, this definitely cannot be used in wood.
So this is a cnc tapper. :D
 
JoeyInCali said:
So this is a cnc tapper. :D
Click to expand...

Much better :D Taps are things I break off in a part that is one step from completion :mad: ... I know my taps :D

Dave
 
JoeyInCali said:
Too slow of speed I think.
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Nah, you can run it as fast as you want. Only problem I see with it is cost, plus, how do you mount the cue in a mill to run a helix program.
Biggest problem is that you need a different tool for each thread count.
 
cutter said:
Nah, you can run it as fast as you want. Only problem I see with it is cost, plus, how do you mount the cue in a mill to run a helix program.
Biggest problem is that you need a different tool for each thread count.
Click to expand...
K, thnx.
.
 
cutter said:
Nah, you can run it as fast as you want. Only problem I see with it is cost, plus, how do you mount the cue in a mill to run a helix program.
Biggest problem is that you need a different tool for each thread count.
Click to expand...
Mount this tool just like the one joey was talking about. In a lam trimmer. I was curious if any one has tried these? Do they tear the threads after you are .5 in on the tennon?
 
RocketQ said:
Mount this tool just like the one joey was talking about. In a lam trimmer. I was curious if any one has tried these? Do they tear the threads after you are .5 in on the tennon?
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Your missing the point of the tool. The idea is to use all the cutters at the same time. Only way I know how to do that is by ramping in a helix program. Would have to have a cnc lathe with the lathe spindle speed also cnc controlled. I've found that wood tearing isn't realated to depth, its related to trying to get that perfect "v" at the top of the thread. I've had the best luck with shallow passes and a very slow spindle speed.
 
cutter said:
Your missing the point of the tool. The idea is to use all the cutters at the same time. Only way I know how to do that is by ramping in a helix program. Would have to have a cnc lathe with the lathe spindle speed also cnc controlled. I've found that wood tearing isn't realated to depth, its related to trying to get that perfect "v" at the top of the thread. I've had the best luck with shallow passes and a very slow spindle speed.
Click to expand...

Correct-a-mundo Steve. You must use a helix program with the thread mill. They give a much higher quality thread than a tap. Here's one in action if anyone cares. These plates are going to be galvanized so we take that in account when we cut the threads.

tmill.jpg
 
Thanks for the input... Didn't know if it would work like using a single point.. I would think it might but when you said about spindle speeds a light bulb went on... Thanks for the kick in the a$$
 
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