Worm & Worm Wheel Free Hobbing Method

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Worm & Worm Wheel Free Hobbing Method

Рет қаралды 1,715,408

Күн бұрын

Shown here is how a worm and worm wheel was made in the home workshop.
What's it for? The answer can be found here-
myfordboy.blogs...

Пікірлер: 567

@michaeljechon6139 6 жыл бұрын

Ego-free demonstration and brilliant work. Your videos have inspired me to set up my own hobby shop at home. I'm a machinist by trade (20 years in manufacturing). My work doesn't allow for moments of creativity such as what is demonstrated in this video. Well done!

@75Bird455 9 жыл бұрын

I like the silent approach with written comments. Very clear and concise. Nothing over-explained. Very nice work!

@xysix2548 6 жыл бұрын

Good stuff. I especially appreciate that the only sounds we hear are your tools and work. NO music, No talking, just tool sounds.

@epitaphofnow 11 жыл бұрын

myfordboy, You're a genius. I'm an Air Craft mechanic. I've -always- wondered how "parts" got made. I just put them together and trouble shoot them. Your channel is the -best- resource I have ever seen. THANK YOU!

@technoshamanarchist 8 жыл бұрын

Whenever I need an idea, tip, or a lesson on how to make something in my workshop, your videos come up. They're a pleasure to watch. Keep up the great work!

@johnfurr8779 Жыл бұрын

The thing I love about your videos is that you make everything look so easy, you avoid the flashy gimmicks in your videos, and you educate people very well... My only complaint, you dont show where in the machinists handbook such information is and how to derive the angle from the data... but that is a very minor complaint indeed

@gordonyoud5975 8 жыл бұрын

It's so good to see a craftsman working. You have taught me a lot from just 1 video, many thanks.

@thibautlacroix5918 5 жыл бұрын

The guy makes his own wok tools.... It's just incredible WOOOW! I really admire your work Thank you from France!!! 🇫🇷

@austinbartose6527 6 жыл бұрын

I like how you show your hands working the machine. So many videos leave that out, it’s the most interesting part to me

@smartypants5036 2 жыл бұрын

Such a great watch on a holiday Monday morning with spicy muffins and a cup of coffee and a great presentation. Thank you for a great start to the day.

@pwkoert6594 4 жыл бұрын

Apparently this video is made when I started to think about making my own gears and worm(wheels), due to lack of tools (funds..) I am still thinking.. This showed me I am thinking the right direction. Thank you very much, nice work.

@jaybalgobind123 4 жыл бұрын

Brilliant! Your expertise and longterm experience shows in the way you turn out the work at at hand . Thanks for sharing!!!!

@iiianydayiii 11 жыл бұрын

You know, I've learned so many things from your videos. This video was a perfect example. I could only guess at how to make a worm gear (let alone a gear cutter) and now I've got the confidence (if not the tools yet) to try making one myself -I need a dividing head. You're one of my best sources of information and I thank you for it.

@misterfixit1952 11 жыл бұрын

I picked up a Harbor Freight 45861 9 x 20 bench lathe new, a few years ago for about $500 US. About the size of the Myford, just not as refined. I consider mine a work in progress with many upgrades planned. There are several lathes of this size sold by Grizzly and others. A great size for those in need of something larger than the smaller hobby lathes but without the need (or room) for a full size lathe. Love your Myford. It inspires me and gives me something to strive toward on my budget.

@paulduffey7975 5 жыл бұрын

I don't understand why you don't have more likes. Excellent video. Thank you.

@derekludwig9678 8 жыл бұрын

Just incredible, exactly what I need to make fine feed for my homemade mini mill. Going to attach the worm gear to the quill and the worm screw will fine feed adjust it! Thank you so much.

@therestorationshop 2 жыл бұрын

Outstanding presentation. Couldn't possibly be clearer. Many thanks for taking the time to share!

@user-hr3ve3ik3o 5 жыл бұрын

Finally! This is the BEST video about making a worm gear! Thanks you!

@myfordboy 11 жыл бұрын

Thanks for your comment. The indexer is as bought. I just had to drill holes in the base to suit the spacing of the tee slots in the table.

@j.dupontsmith353 6 жыл бұрын

Saw your comment on Kieth Rucker's site. This explains why his original worm wheel was bronze and not like the others. Must have been cut in a similar way using a steel worm gear. Very clever.

@dhanushembekar3751 Жыл бұрын

Very interesting one. It's good that no music, advertisement in between. 👍👌🌹💕

@davidgreen1299 5 жыл бұрын

Toolmaker myself. Your videos bring a lot off skills flooding back. I'm very impressed with the casting video's that you do as well (my wife says ohh no you don't ). Keep up the great videos

@Hixxyclips 11 жыл бұрын

Your videos are the only ones I've seen with so many up votes and zero down votes. Well done matey, you're a true engineer.

@junglejammer1 11 жыл бұрын

Facinating, to see this being done. I always thought that the hob did the entire job. Was surprised, that you roughed-in the teeth first, on your mill. Great information as always. Thank you for sharing your knowledge with all of us.

@robertqueberg4612 5 жыл бұрын

Sir, I do like your idea for a collet chuck. After spending my life in shops and tool rooms in the U.S., it always intrigues me to see the processes, and machinery that are customary in other parts of the world. Sadly, the American machine tool builders did not keep the tee slotted cross slide. Your hobbling video is educational and entertaining. I thank you.

@rameshtripathy5978 5 жыл бұрын

Beautiful demonstration and it is very helpful to small Pinion sprocket producers specially for instrumentation instrument gears !

@gregwarner3753 3 жыл бұрын

Excellent technique. Very well done. I do agree with the comment about buying on from, presumably, Boston Gear. That lathe sounds like the one I worked with as a kid at home. I thought the speed used turning drill rod was high.i had to run the old lathe much slower. I did not have carbide cutting tools.

@iankennedy1729 10 жыл бұрын

Very interesting. Never seen that done in 40 yrs of machining. Thanks!

@CrimFerret 6 жыл бұрын

That was pretty impressive. I've since watched a few other videos. You make that relatively basic lathe dance and do tricks that a lot of machinists couldn't do with the fanciest modern ones. I love the "This may not be the textbook way, but it's a way that works and gets the job done with what I have." attitude. Most would probably pin the hobb to the mandrel or some such, you just glued the darn thing and got to work. I also like that you don't waste a lot of time worrying about measurements beyond 'it's close enough'.

@jeffstraw466 6 жыл бұрын

CrimFerret i

@LibertyFreedom1787 10 жыл бұрын

Interesting as I was fascinated by the machines used to make the components you do. Almost in a way like people descend from people before them these machines were crafted by machines before them. Good stuff.

@chrisgosling6810 4 жыл бұрын

This is one of the best videos I have seen, especially the "hobbing" process which great to watch. It's no wonder it's had so many views.

@MrSchoessow 6 жыл бұрын

I know this has been around for awhile but new to me. Great video. I have a need to make this so very timely. Thanks

@gumbykevbo 2 жыл бұрын

The only thing I would do differently is to make the worm and hob as one part up through cutting the thread. Then cut in half and continue with cutting teeth on hob. Save a bit of time and maybe improve match between them. Amazed that you got away without tempering the hob…that wheel is one soft casting!

@PeterWMeek 7 жыл бұрын

Starting by cutting helix-angled slits explains a lot. I wondered how a hob got started evenly without some exotic geared connection between the hob and the worm wheel.

@ricardoalbertoroces2434 4 жыл бұрын

Excelente , un maestro de la vieja escuela , llevo a cabo y con perfección todas las tareas , un placer ver sus videos .

@ciceroluizdasilva2197 11 жыл бұрын

Sou torneiro mecânico,e amo muito a profissão.sei que cada dia que passa há uma nova evolução isso é que é importante a mecânica nunca vai parar de evoluir.meus para-bem muito bonito esse trabalho.

@par4par72 10 жыл бұрын

First let me preface by saying I'm a Journeyman Toolmaker A2. I've always had Hobbs and expanding mandrels at my fingertips. I've never seen Loctite used like that! I mean I knew it was strong, but i never had the balls to try that! Second, I've never had the balls to make a hob and back relieve it with a file!..Then use the lathe as my Hobber!....Very impressive! I really must say, This was the first video that I wasn't pissed off with all the Jack Jawing of the presenter. You got right down to business and made you video...let the work do the talking..anyone worth there salt would be able to figure out what your doing. Not that any of it was hard. Sorry no offense...it's all technique. Technique that I've not in my 35 yr as A2 as ever seen. Best video I've ever seen....and that saying something. ME, PE, Journeyman Toolmaker A2,.. 3rd Generation Toolmaker and son of a Major Player/ Senior VP Institution to the industry. Well Done!.... I'm well pleased!

@myfordboy 10 жыл бұрын

Thank you for your kind comments. We model engineers use what we have available were in industry there would be a dedicated machine for each operation.

@royboone8743 6 жыл бұрын

par4par7 🦁

@robertqueberg4612 5 жыл бұрын

lindowan123 , Yes, sometimes we spend more time patting ourselves on the back, than just saying; “That’s a darned good idea. Congratulations.” And then sign off. Do I need to know about this guy’s childhood and family? No.

@jonesgerard 9 жыл бұрын

Nice work. I needed a worm drive, bought it, $30, brass ring gear, steel worm. But if you needed an odd dimension its good to know to make one.

@JoakimGulbrandsen 11 жыл бұрын

Wow. I am speechless, wish i was in possession of the skills you show here on your channel. Inspiring, great work!

@khmer108 11 жыл бұрын

Thanks for sharing. Im a machinist also. There lots of trick you can learn. It very helpful from your experience. Cutting special thread on lathe is not easy. You got skills . I wish I can learn using software to program and draw desighn for cnc lathe and milling. I have some cnc experiences and manual.

@Tricknologyinc 11 жыл бұрын

The Pitch Circle Diameter (PCD) of a gear is the point between the high and low points that is the theoretical equivalent diameter of a set of simple wheels. Gear teeth reach across that theoretical line and the two extremes are calculated from that median point called the PCD. The outer diameter is less critical than you would think as the highest and lowest points never contact. It is a good place for lubrication to reside.

@mxcollin95 2 жыл бұрын

Your channel sir is a gold mine of knowledge! 👏👍 Thanks for sharing!

@monkfry 8 жыл бұрын

As always, another great vid!! I've learned quite a bit from you. Much appreciated. Now, if you could just keep the talking to a minimum . . .

@mxcollin95 2 жыл бұрын

You’re right...it’s kinda hard to stay focused on the project when he talks so much. Lol

@walterwpg 11 жыл бұрын

Another amazing and educational video. Myfordboy, your work is very inspiring, and some day, I hope to try some of the things your have demonstrated. Many thanks!

@skrem63 11 жыл бұрын

Hello myfordboy!!! With great pleasure to watch your videos! Thank you. All the best to you.

@nlybnrj 5 жыл бұрын

enjoyed the skill you are possessing in handling various machines.

@myfordboy 11 жыл бұрын

Slotting the blank gets it turning easily and ensures the correct number of teeth are formed. I have read it is possible to end up with a gear with the wrong number of teeth if you don't do this.

@christianlewis7055 7 жыл бұрын

Watching you work so swiftly on the lathe is fascinating.

@debjyotiadak6878 10 ай бұрын

Nice work man, I am a noob ,done it before see this video,( 1 year of experience), making a hob with a normal 35 teeth gear, it rotate 35kg material on acid, 😅😅😅😅it works very good

@Tricknologyinc 11 жыл бұрын

Shape is not something that can be transferred from a pattern. It is formed by tools set to cut the specified radii of each portion of the curve. There's a good book by Ivan Law: Gears And Gear Cutting - good explanations of design process and cutting processes - Complex, but each part taken slowly builds to an understanding and working knowledge. Expect to take your time, but be persistent and push yourself a little and you'll get it. Only 134 pages but you go a paragraph at a time.

@gdglock 11 жыл бұрын

You are good, real good. I can't imagine the time it took to learn the specifics.

@polohpi 11 жыл бұрын

absolutely facinating. Congratulations. I never thought that i can make my own tools like you. Thanks

@randr10 10 жыл бұрын

Danbackboard You cut counterclockwise because of the design of the lathe and the fact that you want to have downward pressure on the tool bit. If you use upward pressure, all of the backlash that would be introduced into your carriage and compound rest would make it impossible to keep rigid (chatter free) and accurate with your cuts. Since the tool bit is in the front part of the lathe, the head stock is on the left side, and downward pressure is needed during cuts, counterclockwise is necessary. If you had the head stock on the other end (right side), it would be the opposite rule, clockwise direction would be used, but I've never seen a lathe with the head stock on the right side.

@ralphf8951 6 жыл бұрын

Great work! Myford lathes are really great! Rare to find in the States. Thank you for all of your videos!

@bluehornet6752 5 жыл бұрын

Incredible work. I'm blown away...

@manojitdhali9461 4 жыл бұрын

Very nice. Excellent work.

@millomweb 3 жыл бұрын

I'm going to suggest the teeth starter cuts need not be all 48. I'd suggest 5 is all that's needed as the hob will cut the rest ! I'm just not sure this would reliably meet up after one revolution - maybe in theory but not in practice. Absolutely great video though !

@mikeram2000 4 жыл бұрын

que gran video.. todos los procesos desde la fabricacion del tornillo sin fin fresa madre... y la corora ...genial -

@knex91 6 жыл бұрын

Nice video! But don't stop the lathe when you boring, you can brake the carbure insert :)

@ROCKNTV1 3 жыл бұрын

Boy what a bonus that t-slot cross slide is , thanks for the vid

@tomthumb3085 6 жыл бұрын

No DRO, no CNC. Just real old-fashioned skill.

@krisknowlton5935 3 жыл бұрын

Don Sides But he does have a CNC machine...Crank 'N Crank.

@myfordboy 11 жыл бұрын

You might get away without making the slots but slotting the blank ensures it turns when the hob is fed into it. I have heard of failures when this is not done and you can end up with a worm wheel with misformed and the wrong number of teeth.

@WildWillieWarfield 3 жыл бұрын

Very clear and concise video excellent stuff

@myfordboy 10 жыл бұрын

The collet chuck holds the work more concentric than a 3 jaw and provides a stronger grip too.

@du4lstrik3 11 жыл бұрын

Nice work, sir. Very well done. I was just granted an apprenticeship in the sheet metal industry; although I know this kind of work is different, it's still very appealing to me watching you use machinery to fabricate whatever kind of metal components you want. Makes you realize how much the slightest calculation can make a difference when it comes to shaping metal! My only gripe: engineers in developing nations are emulating your technique, rather than figuring it out on their own. :-(

@myfordboy 11 жыл бұрын

I'll describe it for you here. I don't need to make another so sorry no video. The V angle in this case is 29 deg as the pressure angle of the gear is 14 1/2 deg. The tip width is given in charts as .054 for this 18 DP gear. The V was ground free hand and checked with a protractor. The point is then ground away to give the .054 dimension. The tool was ground from a broken centre drill. It can be rotated in it's holder to give clearance to suit the helix angle of the worm.

@esmaeilamer4382 11 жыл бұрын

شكر لك على هذا المجهود وارجوا ان تمتعنا بمثل هذا العمل الجيد إسماعيل عامر

@dadmezz4024 9 жыл бұрын

Really nice job...cutting and like a lapping to match them...great idea and method.....Thank you.

@EitriBrokkr 11 жыл бұрын

I really love that T-slotted cross slide on your myford lathe, wish my lathe had one.

@Joe_1971 7 жыл бұрын

Wow..very therapeutic to watch....lol You are a craftsman.!

@RICREYNOLDSMUSIC 8 жыл бұрын

I work on a cnc Gleason Pheonix gear cutting hob and this is more fascinating than the machine i run.

@michaeljechon6139 6 жыл бұрын

Ricky Reynolds Same thought. Something far more intimate about controlling the process without a computer being an intermediary between yourself and the workpiece.

@DSperformance96 11 жыл бұрын

I already learned most of the job, truth is you learn all your life, but i already learned doing some precision works, i worked on different machines like mills, two smaller lathes and a massive one. I dont call myself and expert in machining, but i would be a mid good guy. I am looking in some years to buy a newer one, a bit smaller than the one you listed, just because i HATE so much the noise that the big one makes in our school, i ant handle it, and i like smaller machines.

@MilanDupal 11 жыл бұрын

Excellent work! Thank you for video!

@goober650NX 10 жыл бұрын

Enjoyed that. Silver steel is great stuff for making specials.

@RideRevival 10 жыл бұрын

Excellent video. Jumped online to see what would be involved in hobbing as I've got a failed worm gear for the power feed in a Nardini lathe. Tough part is figuring out what the math is to create a gear to match an existing worm. I'm not sure I'm going to have the setup to hob like that, but at least I know what the process would be. I'll put it to use someday.

@BruceBoschek 11 жыл бұрын

You are obviously right about this, but I cannot see how it happens. The cutting part of the hob only cuts in the grooves, not on the outer edge of the gear, or? I guess I'm just too thick to envision this. Wonderful video in any case. Thank you for sharing your excellent work.

@mecanizadosgrela7380 Жыл бұрын

Interesting. congratulations. Is very easy and good finish.

@khash7473 4 жыл бұрын

A Channel that add value to youtube

@myfordboy 11 жыл бұрын

This gear has a 14.5 deg pressure angle so the tool is ground to that angle. It also needs reliving to alow for the helix angle of the gear. The width of the tip is important to and came from data in a book. I found it easier to draw the angle with CAD and eyeball against this but the tip needs measuring with a mic.

@myfordboy 11 жыл бұрын

I worked out the worm wheel size and pitch angle nof worm with information in a book. The hardest part is working out the change wheels necessary to give the lead to cut the thread as it is not a standard pitch. A method using continous fractions is used and I did find an on line calculator to work out that part.

@millomweb 3 жыл бұрын

What's non-standard about 5·730659 tpi ? (4·4323 mm) Just you wait until I start threading on my milling machine ! (I'm afraid I can't ! - can't wait to find out what random pitches it'll produce :)

@millomweb 3 жыл бұрын

96 173.7142857 306.2857143 50.28571429 539.4285714 969.1428571 1714.285714 3062.857143 5394.285714 58.43478261 105.7391304 186.4347826 30.60869565 328.3478261 589.9130435 1043.478261 1864.347826 3283.478261 42 76 134 22 236 424 750 1340 2360 31.25581395 56.55813953 99.72093023 16.37209302 175.627907 315.5348837 558.1395349 997.2093023 1756.27907 24.88888889 45.03703704 79.40740741 13.03703704 139.8518519 251.2592593 444.4444444 794.0740741 1398.518519 17.68421053 32 56.42105263 9.263157895 99.36842105 178.5263158 315.7894737 564.2105263 993.6842105 15.1011236 27.3258427 48.17977528 7.91011236 84.85393258 152.4494382 269.6629213 481.7977528 848.5393258 12.10810811 21.90990991 38.63063063 6.342342342 68.03603604 122.2342342 216.2162162 386.3063063 680.3603604 8.784313725 15.89542484 28.02614379 4.60130719 49.35947712 88.67973856 156.8627451 280.2614379 493.5947712 7.550561798 13.66292135 24.08988764 3.95505618 42.42696629 76.2247191 134.8314607 240.8988764 424.2696629 5.229571984 9.463035019 16.6848249 2.739299611 29.38521401 52.79377432 93.38521401 166.848249 293.8521401 3.96460177 7.174041298 12.64896755 2.076696165 22.27728614 40.02359882 70.79646018 126.4896755 222.7728614 3.201793722 5.793721973 10.21524664 1.677130045 17.99103139 32.32286996 57.17488789 102.1524664 179.9103139 2.247491639 4.066889632 7.170568562 1.177257525 12.62876254 22.68896321 40.13377926 71.70568562 126.2876254 1.874476987 3.391910739 5.980474198 0.9818688982 10.53277545 18.92329149 33.47280335 59.80474198 105.3277545 1.12 2.026666667 3.573333333 0.5866666667 6.293333333 11.30666667 20 35.73333333 62.93333333 There's a 5·79 TPI in there ! 5394 TPI is the finest thread - but I've got another bunch of numbers I'd forgotten about ! I've got all these numbers again but multiplied by 1·3559322 I guess all these numbers are approximate in any case from rounding errors from the source data !

@LeadedAsbestos Жыл бұрын

I have to make a replacement worm and worm gear for my power feed as both are stripped. May I ask what book you used for the calculations? I don't know the correct blank size for the worm gear or what to grind my cutter to. I can reverse engineer it but I'd rather do some reading and learn how to do it right.

@myfordboy Жыл бұрын

@@LeadedAsbestos Ivan Laws excellent and inexpensive book. Gears and Gear cutting.

@LeadedAsbestos Жыл бұрын

@@myfordboy thank you. I will order both. You do some amazing work. Thanks again

@greggroos2271 8 жыл бұрын

Best machining vid ever. Amazing use of Lok-tite. Riveting. Subscribed, you're going to teach me how to single point thread, sir!

@xgvargas 11 жыл бұрын

That's a really nice method! I should pay you the things I learned here! Thanks!

@AlchemistLair 11 жыл бұрын

Very nice work!! I've learned quite a lot by watching your work!!

@niltonpolydoro1 7 жыл бұрын

Very nice work. Congratulations

@AlexBlate 11 жыл бұрын

Awesome video, mate! That was truly an educational experience for me!

@Nonotkidding 6 жыл бұрын

I like your video. It gives me hope on a solution. What my problem is that I need a solution is a large electric motor output shaft conversion to go into a smaller hole of a clutch. I've looked around, asked around, and seems machinists don't want to do what seems to be a simple male to female shaft coupling. Basically my electric motor has an 18 point, 1 3/16" diameter, 1.125" long output shaft and I want to broach a sleeve, or internal (female) over it that then has a 7/8 long, 1 point 7/8" diameter output shaft to go into the clutch of my manual transmission of my GMC Tracker. I don't know if I should try and make a plastic mold and send it to someone, or try and take a piece of stock and broach it with no real tools. I kind of feel like giving up after handing my clutch and motor to several machinists who put them on their shelf and never did anything with them and only returned them after I called and came over several times. Not sure what the issue is. Any help would be appreciated, Jon.

@akelelias 11 жыл бұрын

you are a genius. You make it look so easy

@dikhed1639 4 жыл бұрын

That is SO cool! Thank you for showing us that. I'm going to try it, except I don't have a mill. Maybe a thimk around.

@tomsmith3045 3 жыл бұрын

This is really impressive, and very kind of you to put up. In addition to the whole concept of making your own hob, loved the bits about using an additional gear set to slow the lathe down to cut the spirals, and using a custom template for the indexer. I'm going to search around now and see if you've done a similar project to cut your own helical gears...

@myfordboy 3 жыл бұрын

I have cut skew gears but no video record as it was before KZfaq existed.

@tomsmith3045 3 жыл бұрын

@@myfordboy I kinda figured you might have. :) I've seen setups for it, but they all depended on a very complicated gearing setup between the mill table movement, and a rotary table. Is that what you did, or did you figure out a shortcut, as you did here?

@myfordboy 3 жыл бұрын

@@tomsmith3045 I did mine on the lathe with a milling spindle . Quite complicated. I have some still pics stoneware.

@tomsmith3045 3 жыл бұрын

@@myfordboy Oh!! So using the carriage to hold a small milling head, with the lathe setup to cut the gears as if they were threads? That's brilliant. I'm sure it was a lot of work, but it seems much more straightforward than on a mill, where there isn't any built in coupling between linear and rotational movement at all. If that was the rough setup, did you have to create auxiliary gear sets, or could you do it with just special threading gears?

@myfordboy 3 жыл бұрын

@@tomsmith3045 do you have Instagram? I can post the set up on there if you like.

@creast56 11 жыл бұрын

Another excellent video. Many thanks for sharing.

@johntenhave1 3 жыл бұрын

Lovely work as always!

@mihaelromanoff4871 8 жыл бұрын

this is good work, especially for non- factory of conditions

@MaturePatriot 4 жыл бұрын

Very nice work.

@asid61 10 жыл бұрын

You could also make a double-enveloping worm gear and worm this way, if you hardened the worm gear you made (and made it out of HSS or tool steel) and turned it into a cutter. Food for thought. Great video BTW; I was wondering how one would go about doing this.

@carter102 11 жыл бұрын

This is pretty impressive! You are quite a machinist

@arwedlang3702 10 жыл бұрын

Learned a lot here, thanks a million, you made an excellent video!

@paulomelo5453 6 жыл бұрын

I think the worm tool needs to be different from the end worm to get the slack in the tooth's foot from the whell worm. And this is possible by reversing the calculation between head and foot of the tooth of the worm tool. Maintaining the distance between centers in the manufacture and use of the assembly.