Sawmill and Timber

Business and markets => Wanted => Topic started by: HaroldCR - AKA Fla.-Deadheader on January 19, 2019, 07:45:38 AM

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Title: Hand.cutting.keyways
Post by: HaroldCR - AKA Fla.-Deadheader on January 19, 2019, 07:45:38 AM
Need.2.different.sizes.in.a.steel.single.3".long.X.1".ID.coupler
Ideas?
Title: Re: Hand.cutting.keyways
Post by: Ox on January 19, 2019, 08:50:35 AM
Without access to a machine shop the only thing I can come up with is the edge of a bastard file.  It'll take a long time but the price is right.
Title: Re: Hand.cutting.keyways
Post by: joasis on January 19, 2019, 01:26:08 PM
If you have a lathe, you can drag cut them. The lathe chuck holds the part and lock the spindle, and then crank the carriage back and forth with a sized took in a boring bar holder.
Title: Re: Hand.cutting.keyways
Post by: HaroldCR - AKA Fla.-Deadheader on January 19, 2019, 02:15:06 PM
I believe the piece of steel is too hard to cut the keyway. A file just barely makes a mark.  ::)

It wasn't all that hard to turn in my home built lathe. I have thought about milling a spot on the side and then drilling across to make a groove in the shafts to act as a key with a capscrew. Poor old drill press chuck is nearly ruined by using a milling cutter in it for other projects.

Rigged up an external keyboard that mostly works, so, I might try to do a photo upload of the bastard swingblade mill conversion.
Title: Re: Hand.cutting.keyways
Post by: bandmiller2 on January 19, 2019, 05:52:28 PM
You could use whats called a Dutchman if the pieces are flush drill a hole half in the shaft drive in a round pin. Also an angle grinder and cut 0ff wheel and a shitload of patience. I have done it with a good file. Frank C.
Title: Re: Hand.cutting.keyways
Post by: HaroldCR - AKA Fla.-Deadheader on January 19, 2019, 06:19:58 PM
I have cut several keyways on shafts and a couple in pulleys, etc. I have mini file set and a very small coldchisel. Metal is not easily obtained, out here in the jungle, hence, the harder than normal piece of 2" I have at hand. Coupler is 1" ID.

The end drilling and round pin sounds interesting. I need to harness up to 30 HP, cutting hard wood, at times.

Title: Re: Hand.cutting.keyways
Post by: Ox on January 20, 2019, 08:43:43 AM
How about grinding a small flat spot on the shaft and driving a gib key in between the shaft and pully/sprocket/coupler/whatever to lock it on the shaft?  The gib key will swage itself some and provide pretty good holding power I reckon.
Title: Re: Hand.cutting.keyways
Post by: HaroldCR - AKA Fla.-Deadheader on January 20, 2019, 01:52:25 PM
Thinking about something very similar, doing 2 flat spots on the gearbox shaft. Real problem is inside the coupler. Even thinking about drilling through and doing a hard bolt.
Title: Re: Hand.cutting.keyways
Post by: Crusarius on January 20, 2019, 05:23:32 PM
Could just do a square shaft instead of attempting a keyway.

Grind it square then drill a hole and square it out with a file.
Title: Re: Hand.cutting.keyways
Post by: Ox on January 21, 2019, 09:41:14 AM
Weld it.  8)
Title: Re: Hand.cutting.keyways
Post by: HaroldCR - AKA Fla.-Deadheader on January 21, 2019, 04:52:18 PM
Naah, Ox. Drilled and tapped the stub shaft/coupler for 5/16 hard bolt. Need to recess the bolt head. Probably do that to the gearbox when I remove it, for more drilling, adding features to the arm that gear box bolts up to.