Thread: Quick Release Hand Knob

Is there anybody here on the forum that can offer the specifics for making the quick
release threaded hand knob in the home machine shop? Angles, and whatever else may be pertinent? If not, just tell me where to go? Thank you very much. PS

Which style?

Post a photo, part number, etc.

Something like this. J.W. Winco, Inc. - Quick Release Hand Knobs to give you an ideer. Thank you! PS

here is 10 mm winco knob

the long axis is threaded full length. then an end mill of major diameter of thread is passed thru
work piece at angle of estimated 9 to 11 degrees . this removes 50 % thread from tool path leaving opposing
threaded segments at proximal and distal ends of nut.

here are pics

jh

Originally Posted by JHOLLAND1

here is 10 mm winco knob

the long axis is threaded full length. then an end mill of major diameter of thread is passed thru
work piece at angle of estimated 9 to 11 degrees . this removes 50 % thread from tool path leaving opposing
threaded segments at proximal and distal ends of nut.

here are pics

jh

Thanks very much for posting the photos and the specifics. I'm planning to incorporate this knob to hold down my 6" laps to my faceting machine. The process requires frequent lap changes. Years ago I use 8" laps on a machine that the inventor/designer, (a machinist), incorporated this quick change knob to hold the laps down on the platen. What a time saver & clever idea.

I'm hoping that this will be able to be implemented to use on a 1/4" - 20 threaded arbor with satisfactory results. Thanks for sharing! PM

http://www.jergensinc.com/site/sfg_h...s/group_no=643

#33901 is 1/4-20 and is $6.53

Originally Posted by digger doug

http://www.jergensinc.com/site/sfg_h...s/group_no=643

#33901 is 1/4-20 and is $6.53

At 7 bucks each, why make them?

Originally Posted by digger doug

http://www.jergensinc.com/site/sfg_h...s/group_no=643

#33901 is 1/4-20 and is $6.53

Nice to know where I can get them. Thanks very much for the input & link. I have it bookmarked. PM

Originally Posted by S_W_Bausch

At 7 bucks each, why make them?

Good observation! This will be part of my OJT. PM

Originally Posted by pepper

Good observation! This will be part of my OJT. PM

I kinda thunk that. It will be a good learning experience.

I figure 15 minutes with a rat tailed file, properly applied should doo the trick.

My mom even laughed at the title!

Originally Posted by JHOLLAND1

the long axis is threaded full length. then an end mill of major diameter of thread is passed thru
work piece at angle of estimated 9 to 11 degrees . this removes 50 % thread from tool path leaving opposing
threaded segments at proximal and distal ends of nut.
jh

Whoa.....

I nominate that for, "THE MOST SUCCINCT, YET TOTALLY EXPLANATORY PRODUCTION INSTRUCTION SET EVER" award!

I would have gone on, "the bearing face will tilt the nut to the perpendicular, fully engaging the opposing threaded sections, providing a sturdy yet quickly releasing fastener," at least. Now that would have been a dumb waste. The Machinist follows your tiny instruction only and my addenda will be self evident on it's face for most, and even for the less mechanically talented, upon the first try, kudos.

Bob

I know these knobs appear to have their advantages, but before you mount them on your machine, you might want to consider what vibration they will be subject to in use. They are usually recommended for clamping in static situations.

Reid supply has them for $4.33 each. They also have a line drawing for you, if you must make them.

Industrial Supplies from Reid Supply

Item QK-1

In fact, they will even email you a CAD drawing of the thing if you request it.