Looking For a Cutter

75Plus

75Plus

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Where can I find a cutter that will cut a groove with the same profile as a 1 1/2-4 acme thread? I need to make a new spindle for my drill press and need two grooves 180 degrees apart and about 6" long on a 5/8" shaft.

Joe
 
get on ebay and buy you a acme thread gage 10.00, then grind your own bit, you can go to youtube and type in acme thread and look for tublecain its a vid and you can watch how he does it, its real easy:biggrin:
 
and on acme threads make sure your compound is set for 14-1/2 degree right or left depending on the acme screw:biggrin:
 
Jim B. said:
You can use an Acme threading tool. As noted you can grind you own.
Attached is a gear, for a threading dial, that I made using such a tool, In this case I had 32 slots.
Click to expand...
is this a lathe your doing this in if it is what type of jig are you useing to hold your work, fantastic job, hats off to you:biggrin:mac
 
Maybe if I can (load this) you can do somthing with this, then grind one from something soft just to use as a
gauge if good then grind a real one.

acme gauge.jpg
 
Thanks for the suggestions. I have a fixture for grinding tools for Acme threads so that is no problem. I would prefer using a rotary cutter as opposed to single point milling. From all the old drill presses that used the two groove system I am sure that such a cutter must have been available at one time.

I think that I may be able to do the job using a Woodruff key cutter but that will require multiple set ups and careful measuring. If I go this way, and I am successful, I will post the details.

Joe
 
Perhaps you cold obtain an inserted thread mill, then locate the proper insert to get that profile. Most splines in a drive are 30 degree pressure angle. Acme is 29 degrees, but I'm sure you are already aware of this.
 
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