LumberJocks

SPROCKET DRIVE

  • Advertise with us
Project by kiefer posted 08-17-2014 09:01 PM 2391 views 12 times favorited 25 comments Add to Favorites Watch

Some time ago I posted this dividing head for my drill press and have been itching to use it .
http://lumberjocks.com/projects/96914
Now I finally have a project that is in the development stage and this is coming handy .
I set out to make some sprockets and Baltic birch ply looked like the answer because of its strength .
Well here is how I made the sprockets which was a little bit of trial and error as there seems to be some confusion as to where the measurements are taken from as far as the diameters are concerned but after a couple of attempts I got it worked out and can now take two sprockets and attach them back to back and get a perfect match .

Hers is the process in pictures in the order of steps I made
!https://s3.amazonaws.com/lumberjocks.com/nagwqo2.jpg
The plywood blanck mounted and and the diameter set and double checked .

The first set of holes drilled by only using the right index lock .

The second set of holes drilled with the right index lock inactive and using the left index lock this allows to place a hole in dead centre between each previous hole for a total of forty in this case .
!https://s3.amazonaws.com/lumberjocks.com/nagxb6q.jpg!
The waste is cut off with the bandsaw along the outside diameter of the hole circle leaving some extra to be removed in the next step.



The disc sander with a little jig that I previously posted does a nice job of cleaning up the top of the teeth and sanding it to the proper diameter .



Here the two halves are glued together and will need a little hand sanding to shape the teeth to a slight bevel on their sides and the measurements are within a fraction of a millimeter .
Now you wonder why I did all this having made gears using plywood and cog or timing belt wrapped around it.
The Reason being that that makes gears which will mesh to each other but not to a belt when engaged more the about three teeth ,there I need a sprocket with a different tooth geometry to mesh with the belt when a wrap of more cogs is required .

Klaus

-- Kiefer 松





25 comments so far

View exelectrician's profile

exelectrician

1557 posts in 1079 days


#1 posted 08-17-2014 09:22 PM

I just love watching you work with a vernier caliper and talk freely about accuracy to a hundredth of a millimeter as if were a normal thing. I found this process fascinating.

-- Love thy neighbour as thyself

View jaykaypur's profile

jaykaypur

3338 posts in 1059 days


#2 posted 08-17-2014 10:21 PM

Amazing step by step on a great build but…...............unfortunately, I got lost around the 3rd pic! LOL You do absolutely spot on work and your craftsmanship is beyond the pale.

-- Use it up, Wear it out --------------- Make it do, Or do without!

View Redoak49's profile

Redoak49

339 posts in 640 days


#3 posted 08-17-2014 10:26 PM

Very nice and a great explanation

View Nathan H.'s profile

Nathan H.

60 posts in 215 days


#4 posted 08-17-2014 11:07 PM

Awesome! I cannot wait to see what these will be used for! Any hints as to the finished project will be?

-- - Nathan H., Iowa

View Jim Jakosh's profile

Jim Jakosh

11420 posts in 1757 days


#5 posted 08-17-2014 11:20 PM

That is really cool, Klaus. I love it! I forgot about that dividing head you made. I had to go back and see how you did that. A Machinery handbook would give you the dimensions and geometry for the teeth, but you figured it out okay!!

I was thinking about how that would make a good drive belt setup for my metal lathe by making steel gears that way. I had used a serpentine belt on the old Southbend but then changed back to a flat leather belt with Clipper Belt Lacers in it so I could install it without taking the lathe apart. With a timing belt drive, it would never slip!!!!!!!!
You’re a man after my own heart with a digital caliper and calculator sitting on the bench!!!!!!!!!!
Thanks for the posting!!!!!!!!!!!!..............Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View shipwright's profile

shipwright

4955 posts in 1449 days


#6 posted 08-17-2014 11:52 PM

Just amazing as usual Klaus. You really have way too much time on your hands.
Maybe you should go back to work. :-)

It’s just fun watching you think.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees. http://prmdesigns.com/

View DocSavage45's profile

DocSavage45

4974 posts in 1494 days


#7 posted 08-18-2014 02:16 AM

Klaus, Amazing stuff. Is this for a wooden engine? LOL!

-- Cau Haus Designs, Thomas J. Tieffenbacher

View MarkTheFiddler's profile

MarkTheFiddler

1779 posts in 840 days


#8 posted 08-18-2014 02:35 AM

Klaus,

The things you come up with! An engineer and woodworker are an awesome combination. This project just so happens to be a solution to problem I’ve been wrestling with. Rubber Band Gatlin gun. Hmmm.

-- Thanks for all the lessons!

View hoss12992's profile

hoss12992

2725 posts in 544 days


#9 posted 08-18-2014 02:53 AM

Absolutely amazing. I would love to be a fly on the wall in your shop, just to watch you work, and see your creative process in action. Great job as usual buddy

-- The Old Rednek Workshop https://www.facebook.com/theoldrednekworkshoptn

View kiefer's profile

kiefer

3062 posts in 1318 days


#10 posted 08-18-2014 03:39 AM

I have lots of time at my hands and lots of sleepless nights that have to be filled with something and this is a great outlet to occupy my time .
Thanks for all the kind comments and I hope this is of some interest to you and if you have questions please don’t hesitate as I am not the best on explaining things .
Precision is of the utmost importance on this but it is easy if you take your time and double check and don’t worry too much because mistakes make you learn and get it close to perfect which is almost an impossible dream but we all try .

Klaus

-- Kiefer 松

View Gshepherd's profile

Gshepherd

1472 posts in 853 days


#11 posted 08-18-2014 04:04 AM

Excellent Craftsmanship and Pics you posted….

-- What we do in life will Echo through Eternity........

View stefang's profile

stefang

13017 posts in 1985 days


#12 posted 08-18-2014 07:41 AM

Now you got my attention klaus. I am very curious about what you are making, and once again the timing belt is in use. I think you have discovered a new universal tool good for just about any project. I love it when creativity is used to repurpose things and this is a prime example of that.

-- Mike, an American living in Norway.

View NormG's profile

NormG

4164 posts in 1655 days


#13 posted 08-18-2014 03:51 PM

Great project, thank you

-- Norman

View spud72's profile

spud72

309 posts in 2145 days


#14 posted 08-18-2014 04:37 PM

Wow, Very well thought out.

Guy

-- Guy,PEI

View HillbillyShooter's profile (online now)

HillbillyShooter

4565 posts in 944 days


#15 posted 08-18-2014 04:47 PM

Great precision! Very impressive!

-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington

showing 1 through 15 of 25 comments

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase