Can you replace a gear with less teeth if you can’t find the same original gear

I cant find differential constant of my hobbing machine for producing helix gear. some advice??

How i can find my machine constant??(its pfauter R01)

My question answered in under a minute. Not many other things i could say that about... Cheers

This is really helpful. What if the gear is an inner ring gear, how does the formula change? Thanks

Thanks for putting these on Andrew, I attended last years Bash class and thoroughly enjoyed it.. 👍👍

Thanks for hosting this school..... I had a great time and learned a thing or 12 :)

0:35 thats how you do a youtube video, less than a minute in and all the formulas you need are right there, with he explanation FOLLOWING. Other tutorial channels should be taking notes

Part 2?

Thank you 🙏

It also damages brass or bronze gears (containing copper)

Can you tell me the module of this gear..

This machine doesn't seem like it'd be very hard to make

What is the name and model of this machine

im trying to model a daihatsu feroza gearbox, and the gears dont seem to be metric or imperial.for 2nd gear countershaft i have a module of 2.6667, and diametral pitch of 9.58. have you ever seen that before?

On my restoration of the Ellis, I had no need to press the gear with an arbor press. I tapped it in.

After you agree to the EUA, the PDFSparks brouser that is required to install this "free" software will copy and use everything on your devise. Read the details. Totally unneccesary. Not comfortable at all.....

I am building a model IC engine, the plans call for a pair of spur gears, ration 2-1 DP48 60 teeth and 30 teeth. I only have DP 32 cutters, if I cut a 60 teeth and 30 teeth with the DP32 cutter obviously the ratio is still 2-1 but does it make any difference the fact that the gear diameters are slightly larger or would it perhaps throw the timing out? If you have the time any help appreciated thanks

Hi Sir, Do you have a tutorial video on how to know helix, lead, angle etc. of a helical gear from sample, for example someone bring you broken helical gear, how do you get the info from the sample?

Merci, le sous titre en français aide bien !

I have a mikron gear hobbing machine but I don't know how to set cutter angle, could you advise me, thank you sir.

Some fifty years ago, I worked teaching machine tools at university level. One test was to using trigonometry calculate how to make helical gears. When the math was done, they had to set up and run a hobbing machine, possibly a Pfauter. Very easy to tell if they passed the test. If they had made the math wrong, it started looking good but ended with a smaller diameter blank.

This is just such a wonderful technique, I was down the rabbit hole looking at worm gears for making fine adjustments and getting lost in it all Thank you for sharing it Subscribed!

Great work.. Can I make a 23 tooth gear differentially without using the number 23 or its multiples?

great video! Used your online gear dimensions calculator. Very helpful in making and designing gear. Thank you!

Very cool. Just yesterday I started my new job at a company making primarily gears and castings. Most gears are CNC machined now but there's still a Pfauter in the shop. Looking forward to the learning curve.

Really great simple video for figuring this out. I was an electronics engineer, not a gearhead, lol - really really appreciate the help.

I have two mid-century engineer's books, giving info on gearing. Fowler's Mechanics' and Machinists' Pocket Book (43rd annual ed., 1951) has tables of data for cycloidal and involute gears but only 15 degree pressure angle. It mentions Grant's Treasise on Gears, describing an odontograph and mentions the 15 degree standard. Applied Mechanics by David Allan Low (15th ed., 1940) mentions the "common tangent to the pitch circles" (aka the "line of action") being usually 14-1/2 to 15-1/2 degrees. So, whilst looking backwards to some degree, these suggest that 14-1/2 may not have been univesral, or that 20 degree PA was being used in the UK up to and during WW2.

3:25 And the 0.25 value for sin 14.5 degrees is what I was taught 50-odd years ago, as the 19th century's easy to use value before calculators and perhaps log tables and slide rules. Also the drill point of 118 degrees gives a length from tip to full diameter of 0.3 of the drill's diameter, the amount the drill must go through a piece of work to produce a clear hole. I was a planning engineer, so useful knowledge. We had automatic (not CNC) Warner-Swasey lathes. By the 1960s, standard industrial gearing was 20 degree pressure angle.

it's a shame they trying to dumb down such an intelligent articulate educator

very very good. Easily solution. Thank you

Never seen mics and gauges stored that way 😅

as a mech-e this is mesmerizing yet so simple, truly great design

Im new in gear making is this software works for me?

You should never use a Reamer on those Chucks, even by hand. They make a Stone specifically for that. You can see this method on Steve Summers KZbin channel as he rebuilds a Jacobs 18N. He stones the Jaw Grooves. By pure luck I met a Jacobs Engineer years ago, and have stayed in touch with him for over 20 years, so I have learned about everything there is to know about Jacobs Chucks, especially the Super Chucks, due to the fact that I own every size they make from the 8-1/2N all the way up to the 20N, and have duplicates & triplicates in most of them. I have a 14N, 16N, & 18N all still new in the box even though they are probably 30+ years old. Bought those from a Machine Shop that was closing along with several other used ones and some Albrechts. Just thought I’d pass along that knowledge that impressed upon me by a Jacobs Engineer to not ever use any Drill Bits, Reamers, or Files. Use a Stone only! You can get them from KBC Tools I’m pretty sure.

Wow - I just gave this a go, after looking at ridiculous pricing for Worm gear sets, and sure enough just with an Aluminium blank on my Mini Lathe, Pretty much a perfect Worm. I was significantly impressed, and even mystified by the fact it did indeed Self index through the full 360 degrees, and seemingly not crossover in any section anywhere. Tested by replacing the 12mm Tap with a 12mm bolt, then engaging the cut against the bolt, giving a nice turning "gear" which I could put some pressure on and the lathe was easily turning it albeit with plenty of pressure from me. The good thing is too, I can easily work with AL blanks to get the process right, and with the length of the standard Tap, the blank I did was around 100mm across, so it allows for making a decent ratio of gear that I can then Slice to size for screwing to the back end of large assemblies that they need to go on - the AL blanks can then be used for testing and templating before moving to Brass. Can't thank you enough for this video! New Skill unlocked!

Congratulations on the launch! Looks great 👍

Hi sir What will be Differential costant how to find un known old type stanko 5d32 russian machine.?

Thanks Andrew. This looks like a really good product. I’m hoping to grow into the Pro level at some point. I’m going to have to go back & look at my information of the last gear I cut. I like that you have the calculator for strength in your calculator.

Thank you! Great Video!

I m intrested

At the beginning I thought it seems a Pfauter and it is! 👍👍

I want to study

Thank You, another informative video.

Now, that's a vid for me! In our company we use several thread/worm grinders from 1940, '41 and '42, made in Berlin by Lindner. They too are still going strong.

Way out of my league again, seems to be a reoccurring phenomenon. I appreciate your doing these videos, getting to see how the other 5% do it. Thank You

Late to the show but I'm certainly glad I ran across your channel. I have successfully cut a few gears but a rank amateur would best describe my expertise. I'm looking forward to watching and learning. Thank you for time and effort.

Mikron didn't make machines, they made functional works of art. And if you want the best hobs, get Schnyder

When you add water to the oil it becomes suds oil 10 meal deal ha ha ha ? No it was real 😭

Well that was a complete waste of everyone's time. There's a half dozen better, less complicated ways of doing this. And They make hi-spot prussian blue for a reason btw.