One-Way Ratcheting Dog Clutch
ฝัง
- เผยแพร่เมื่อ 16 ก.ย. 2013
- Prototype mechanism made from wood.
A dog clutch couples two rotating components by interference. The two parts of the clutch are designed such that one will push the other, causing both to rotate at the same speed in one direction but the ratchet will release if rotated in the opposite direction. - แนวปฏิบัติและการใช้ชีวิต
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currently working my way through all of your videos, great material, thanks
Wood gear clocks usually have 3 “clicks” (at least the ones I have build have 3) and are gravity operated since the clock hangs on the wall and winding mechanism is always vertical. Only one click engages at a time. The mechanism in my other video “Wood Gear Ratchet” (with two pawls) would be more suited to a clock. Advantage of this ratcheting dog clutch is more points of engagement spreading out the load. Advantage of both clutches, they are spring loaded and will work in any position.
Glad to hear you enjoyed it. Please check out my other videos and be sure to subscribe so you will be notified when new videos are released. Thanks for watching! Ron
What a professional job! Not just the projects but, the presentation as well. I've been using youtube lately, to research a product, that I intend to buy. Unfortuneately, the only video reviews on it, have been painfully, amateurish. You're a breath of fresh air, sir. Keep up the good work.
Really loved this video, explained it nice and well. Designed my own one and 3d printed it, however isn't as smooth as wood due to the discrete layers on the ramps.
So simple and neat, thanks for the show
Your video is well done and greatly appreciated! Thanks so much for making this. Just what I needed to know.
Excellent, Ron. This is one I had not seen. Very nice work. Beautifully done and explained very well. Aloha. Clayton
at 1:04 you point out the 'spring guide bars' which I assume are a stock bought part. but I cannot seem to find anything of that name on eBay. what should I be looking for? thanks
I could have described that a bit better. The guide bar is whatever will fit loosely inside the three compression springs. In my case that is probably 1/8" diameter wood dowel. And I do not remember what size the springs are... just what I found in my salvage parts box. The guide bars will be whatever suits the compression springs you have decided to use. Thanks for watching!
Ronald Walters ah that's great, thank you!
Very nice build. Kudos
It looks great, I just wonder what is this arrangement's advantage over the much simpler two pawl ratchet that is often used in the wonders on wooden clocks?
Thank you very much for sharing.
looking forward to the finished thingamajig.
Really great design solved a lot of my doubts 👍👍👍👍👍
Best videos you make for sure !
(Hi from Australia)
Very ingenious.
Brilliant!!
Amazing!
Ingenious.
What an IDEA!
How small could you realistically make a mechanism that performed the same function?
EXCELLENT! Are you going to make a 3d printed version?
Great work Sir.
The first thought that came to my mind was "bicycle crank". It will become part of the all-wood bicycle.
Second the ingenious comment, very cool and interesting ! Great.
so cool
Ronnald! Great Video, Ive now watched most of your videos. I didn't know all this was possible with wood. What I really need for my project is for this mechanism to be able to turn both ways with resistance in both directions. Is this possible by altering the angle of the teeth?
+Martin Fabbio Google "socket wrench ratchet mechanism" and study the photos. See if that is what you want... then figure out how to make it. I have not built anything like that.
Wonderful work. Wonderful finish look to them also. Could a single centre spring work as well as three springs for this dog clutch??
I made it this way because I had the three small springs and did not have a larger spring, which would fit over the axle. A single spring could be used on the axle instead of the three springs on the guide pins. The internal center spacer would need to be modified to work with the single spring. One possible configuration, the spacer could be a larger diameter (same as the inside diameter of the body cavity) with three small holes to fit over the dog guide pins and a larger inside diameter (for the spacer), leaving ample room for the single center spring. The guide pins could possibly be eliminated if there was sufficient overlap between the dog and the body of the clutch. While I had sufficient overlap, I found the guide pins provided smoother operation.
Ronald Walters Thank you for spending the time to answer.
1:53 View-Master disk :P
Once you see it, you can't un-see it!
Sopar very nice
Is there a reason, other than decorative, for the dog to have a "dovetail like" shape?
+Greg Altenhofel When the mechanism is assembled you can’t see the parts so being decorative wasn’t a consideration. You want the area(s) of contact between the spring loaded dog and the drive plate teeth to be flat and
that will generally be along a line drawn through the center of the mechanism. Then on the other side of the dog the same situation is required, so the dog teeth will slide smoothly and evenly on the inclined planes (or ratchet ramps) and compress the springs. That line of contact will also be a line drawn through the center of the mechanism. Cutting away everything else, I ended up with a “dovetail like” shape.
Thanks so much for getting back to me on this. I seem to remember it being an old video. I'll go back and watch it again, perhaps I'll see it this time.
Got it within a few seconds this time thanks again.
Having seen this, I would bet you could make a constaninesco TC out of wood.
It would be interesting to see an animation of the engine/transmission in that car. Thanks for watching. Please subscribe!
Great work Ronald, do you have any gear project like a clock (with to needles in the center), where the "seconds needles" spinning to the right and other "seconds needles" spinning with the same speed to the left? for kinetic project that I love and I want to use an small motor to create de movement. Thanks in advance
I am not sure what you are looking for. I have a 4-video series on a "Gear Head". On the back side of the head, I use a ratchet and a geneva mechanism.... one increments the pointer counter-clockwise and the other increments the "word wheel" clockwise. The pointer and word wheel are on the front of the head. Power transmission from the back to the front is via telescoping brass tubes just like you would find for the hour/minute/ second hands of a clock. The brass tubes are not specifically shown in the videos. What you want to do could possibly be done with fewer gears. I also have videos on my clock "Simplicity" designed by Clayton Boyer. Hope that helps. Thanks for watching. Please Subscribe.
Thanks for your answer, I read and view your recomendations, susbcrition done! :)
Hi, Great work!!! this is like a centrifugal clutch ??? It could be applied to a stationary engine of a go kart???
***** This will not work as a centrifugal clutch. This is a type of ratchet such as for a winding a spring in one direction... then the spring would drive a mechanism such as a clock or a toy.
Oops, that was "winders" not "wonders".
If I give you my email how much for the plan mate ?
T- one 1000 Sorry Mate, there are no plans. I just show you how you can make something similar yourself. If you go to woodgears.ca there is a Gear Template Generator in the lower left corner of the home page. From there you can play around with the gears and duplicate what I did in the video. I cut this out with a scroll saw. Have fun - and thanks for watching. Ron
!!!!!!
Woff woof woof... Shudda typed bow wow wow! I know how to spell that...😀😎