www.mrpete222.com/ Tubalcain shows how to cut an involute spur gear by the simple direct indexing method. Be sure and watch all 10 videos on the topics of dividing heads & gear cutting.
I'm just finishing my tour through all those almost 200 shop tips. Thank you so much Mr. Peterson. I'm just a 30 yo taxi driver from Brazil and in my spare times I like to put in practice some tricks that I had learned here. I wish I could afford a mill and some more tools, but a small South Bend 9 inch clone was already too much for now. Again, thank you and keep 'em coming. My best regards from across the continent.
Hi mrpete I am from the Netherlands and have a lathe and two millingmachines for many years. I bought them because i realy like to work with metal I learned myself using the lathe but the milling machine was hard to learn by myself and mistakes are more exspensive. Thanks to you it getting better and better and i cant get enough of your videos. Despite my bad english i can really learn from you. That tells me what a great teacher you are. Thanks thanks thanks
finally got an indexer the other day, just happens to be a Cincinnati like yours, ca. 1941. it must weigh 300lbs. it came with the original 3 jaw monster chuck and the dual center tail/toe stock. unfortunately its pretty locked up, so i'm going through it and slowly bringing it back to life. so all your videos on gear are extremely valuable to me as i'm learning to use it.
I really enjoy watching your instructional videos. It makes me disappointed in the same respect, because of my machine shop professor did not teach many of the topics you have covered. I am glad that you have added this knowledge to the masses.
I was very happy to see you make a video with the indexing head as we just started to learn to use them today in the school I go to. Thank you very much for the time you take to make these videos.
Outstanding Mr. Pete. Now I have a strong craving to cut a gear. It's just a strong desire and to see that when you cut your last tooth is a thing of beauty!
Dear sir , Hi, I Have to confess, I have learned many thing from youtube, but you are something else, thank you for your efforts in learning to others, from this side of the world a great thank you for you sir.May god bless you
Fantastic! Love watching these. Gears have always been something fascinating and yet fiddly to think about how it was made. Seeing them cut there on the machine is really something.
Excellent video mrpete. Thanks for sharing. I am in the process of making my own direct dividing head so this has come in the nick of time. regards from the UK
Thanks Mr. Peterson. I enjoyed this video very much and found it very informative. I have a Heavy 10 and a Bridgeport sitting in my garage but am waiting on a new electrical service panel in order to have the capacity to run 220 into my shop area. Very frustrating right now but I have been reading books about gears and gear cutting in the meantime. I am going to subscribe to your video courses once my equipment is powered up and running. For now, I have a friend that is coaching me on his equipment, I read, and watch your (and a few others) videos. You provide a great service to many of us that want to take up the machining hobby later in life. Regards. Bob
great information, the Jimmy stewart sounding voice adds to the video. I am 59 and am just now starting to learn lathes and milling machines, gears are just very interesting. Thank you for the very informative video.
When I was a teenager, I helped Dad with the repair of a bull gear in the final drive of a John Deere "M" crawler. After the local welding shop built up the broken out teeth, we spent about two days with hacksaws and a pair of new hand files bringing them back to shape. Our reference was the mating gear and a bit of cardboard that had an impression made in it from the good teeth in another area of the gear. That gear worked for us through the day that the tractor went off the property, in the hands of it's new owner, about six or seven years later. It was a huge lesson in patience for me. But I like this method much better.
Well done you! There are few people today who could, or could be bothered to do this, but I am sure this job gave you great satisfaction when it was finished, and working again.
Excellent presentation, professor . . . makes me want to go down in the basement and cut some gears! Keep up the good work on your videos; I've learned more from them in the last year or so than all the community college courses I've taken over the last 20+ years. 2thferry
Thanks, Mr Peterson. From this video, I can see the advantage of direct indexing over indirect indexing. One is much less likely to incorrectly index due to a missed count. It's certainly not impossible to make a mistake but it's less likely. I suppose you could have an index plate for each tooth count if you were making them in a limited production environment. Nice work. John
Lovely dividing head, great demonstration / instructions! Smaller gear counts are often used in clocks and watches, six leaves / teeth is common, some earlier verge escapement timekeepers even used as low as five, tricky to get the depth right on those and you're cutter needs to be exactly on centre..... Kind regards Daryn, Southwest uk
i enjoyed shop when was at comprehensive school they were my last five years in school i did a cutaway engine and rebuilt a lambretta scooter i also did some lathe and will projects but i really enjoyed the forge 1976 to 1980
thanks for a very informativ and easy to view vidoes, i like realy like the lenght and amount of information you put in to all your videos. and this on gears are realy intersting. //Morgan
Love your gear cutting series. REALLY hope you change your mind about the helical gears though. There are so few videos online involving helical gears.
Mr Pete pardon me I got one question: how did you loosen the chuck you didn't cover that operation. what is the correct way to do that. thanks as always.
Hay mr p In the machinerys handbook under simple compound and differential indexing it shows the charts for dividing for divisions for brown &sharp 3 plates & Cincinnati standard plate dividing heads
I need to make a 127-tooth gear for metric threading on my lathe but I have no dividing head (and even if I did, no plates support 127) so I plan to use my rotary table and print a table of angles from Excel. I was planning to make a carefully-centered jig to hold the gear blank, but it seems like using centers with a bolted dog would be both better and easier, so thanks for that. I always wanted a center for my rotary table... 😁
Thanks for the Video. Have some gears to cut for an upcoming project. Was hoping to find some cutters at an auction but no luck. guess folks around here don't use 14 1/2 pressure angle 16 pitch gears.
pitch 12 you mean, 12mm pitch? do gears come in metric and imperial? I need to cut, 2 gears to make a tool to rotate a "modern metric" engine from the flywheel ring while its being overhauled? How I am going to know what gear cutters I need please. I have a starter motor gear from the same engine to help me out, " if that helps" Thanks for your interesting videos.
Great Video, Once set up is done it's fast. Very interested in the next video on Plain indexing- I'm wondering what the need for Plain over Direct indexing would be ? I try to remember to keep things as simple and as easy as possible if the results are acceptable-as I have a tendency to "Over Think" things and make it much harder than it should be it gets me into trouble every time! lol
would this be exactly the same DP that uses the Atlas 12/36? I have that lathe and for some reason it look very very close! but it could also be a bit to big for that lathe. Plus, I don't have nothing to loose asking.
Hi mrpete , When you set up the mandrel on the mill should you be concerned which way the taper faces in relation to tool travel? Just wondering if the force of cutting harder material could loosen the blank on the mandrel if it were facing the wrong way. Or is pressed on hard enough that it's not an issue?
Hi mrpete, the first time cutting gears is a little more intimidating, but after a few errors and a little practice, the main challenge is not to go in the clouds and make stupid mistakes by being in the moon... Pierre
You contributed to make good machinists by teaching all your life, I'm lucky enough to have been taught by devoted people also. If I can undergo good machining projects it's their achievement... I know you're a busy person, but you're invited to peek at what I'm doing on my channel, a comment from one of my mentor would be greatly appreciated. Pierre
Another great video Mr Pete - thank you so very much! A few related questions remained in my mind; a) Was the mandrel that held the aluminum gear blank tapered or expanding? b) Was it a purchased mandrel or one you made? c) If you made it, is the machining process covered in another of your videos? You are an American Treasure, Sir!
ramosel I believe that mr pete said that it was a press fit. I would be interested in this as well. How much interference was required to keep that blank from moving on the mandrel???
I have a very old Brown and Sharps indexing head about that size. I have seen some videos on dismantling and servicing one. It looks crazy complicated. Do you think a hobbyist can do so?
I have a question Mr. Pete, I have a machinist friend I help research parts and tools for him on the internet, as he does not use internet? He needs to gear cutters and they are cutters for a spline type cutters. The gauge he brought over for me to look at has marked on it 7/16 DP 30 degree he also brought the spline for me to see. The outside of the spline has 25 teeth the inside of the spline has 19 teeth. The spline gear OD is 3.72 ID is 2.65 its a big gear I called Ash Gear company but they have no such cutter? I have no idea what I'm looking for other then the 7/16 DP 30 degrees the spline cutters need to cut 25 teeth and 19 teeth and not a involute cutter? Any help on this ! Love your videos by the way. Mike E
After several hours of looking I found nothing. What this gear was comes off a home made hey moving slide? and it was pieced together from a multitude of spare parts etc. What he ended up doing was making a hss profile single cutter and used the mill as a single vertical profile cutter, took him 2 hours to cut the inside and out side spline teeth plus a new shoulder he told me. I do enjoy your tip's.
Is it not better practice to lock the dividing head spindle to reduce chatter & consequential wear transmitted to the detent ... also do u make any effort to elliminate backlash when indexing ?... 😕
When you said "that in reality you can't cut a gear with less then 12 teeth"! Is that because of gear diameter, cutter size, size of mill, etc.? I mean, you really could cut a smaller one, you would just need right equipment, correct? Another great video by the way!!
This may be stupid question but couldn't this same process also be done with a rotary table mounted at a 90? add in some math to figure the degrees of rotation?
just what the doctor odrered I just bought a BS.O the little brother to yours$349.00 on eBay tail stock all the plates and all the fixings did not realize how big it was till I got her home my bench mill is not tall enough for straight-up use I will have to use my drill press!!
Agreed, don't use your drill press. The spindle clearances are too loose and the bearings aren't designed for the side loads. Find a way to adapt your mill. Or get a bigger one.
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I'm just finishing my tour through all those almost 200 shop tips.
Thank you so much Mr. Peterson.
I'm just a 30 yo taxi driver from Brazil and in my spare times I like to put in practice some tricks that I had learned here.
I wish I could afford a mill and some more tools, but a small South Bend 9 inch clone was already too much for now.
Again, thank you and keep 'em coming.
My best regards from across the continent.
Thanks for watching. Good luck with the lathe
Hi mrpete
I am from the Netherlands and have a lathe and two millingmachines for many years.
I bought them because i realy like to work with metal
I learned myself using the lathe but the milling machine was hard to learn by myself and mistakes are more exspensive.
Thanks to you it getting better and better and i cant get enough of your videos.
Despite my bad english i can really learn from you.
That tells me what a great teacher you are.
Thanks thanks thanks
Thanks for watching. I like to work with metal too.
Excellent as always Mr. Pete! I watch you and Keith Fenner every Wednesday night with my 92 year old dad!
Mark Helms Great--I would hope many would help the oldsters watch youtube.
finally got an indexer the other day, just happens to be a Cincinnati like yours, ca. 1941. it must weigh 300lbs. it came with the original 3 jaw monster chuck and the dual center tail/toe stock. unfortunately its pretty locked up, so i'm going through it and slowly bringing it back to life. so all your videos on gear are extremely valuable to me as i'm learning to use it.
Sounds like a good project. I sold mine because it was too heavy to move
I really enjoy watching your instructional videos. It makes me disappointed in the same respect, because of my machine shop professor did not teach many of the topics you have covered. I am glad that you have added this knowledge to the masses.
Thanks for watching.
I was very happy to see you make a video with the indexing head as we just started to learn to use them today in the school I go to. Thank you very much for the time you take to make these videos.
Thanks--glad it helped
Outstanding Mr. Pete. Now I have a strong craving to cut a gear. It's just a strong desire and to see that when you cut your last tooth is a thing of beauty!
Thanks
Dear sir , Hi, I Have to confess, I have learned many thing from youtube, but you are something else, thank you for your efforts in learning to others, from this side of the world a great thank you for you sir.May god bless you
Thank you very much
Fantastic! Love watching these. Gears have always been something fascinating and yet fiddly to think about how it was made. Seeing them cut there on the machine is really something.
Thanks
Great video, so much easier to consider doing this when I am able to watch and listen to you explain as you go along. Thanks very much.
Thanks
Excellent video mrpete. Thanks for sharing. I am in the process of making my own direct dividing head so this has come in the nick of time. regards from the UK
Thanks for watching
Thanks Mr. Peterson. I enjoyed this video very much and found it very informative. I have a Heavy 10 and a Bridgeport sitting in my garage but am waiting on a new electrical service panel in order to have the capacity to run 220 into my shop area. Very frustrating right now but I have been reading books about gears and gear cutting in the meantime. I am going to subscribe to your video courses once my equipment is powered up and running. For now, I have a friend that is coaching me on his equipment, I read, and watch your (and a few others) videos.
You provide a great service to many of us that want to take up the machining hobby later in life.
Regards.
Bob
Thanks for watching. Congrats on those new machines
I've been watching for this ever since you announced it as the next project; I wasn't disappointed. Thanks for your effort.
Thanks for watching
great information, the Jimmy stewart sounding voice adds to the video.
I am 59 and am just now starting to learn lathes and milling machines, gears are just very interesting.
Thank you for the very informative video.
When I was a teenager, I helped Dad with the repair of a bull gear in the final drive of a John Deere "M" crawler. After the local welding shop built up the broken out teeth, we spent about two days with hacksaws and a pair of new hand files bringing them back to shape. Our reference was the mating gear and a bit of cardboard that had an impression made in it from the good teeth in another area of the gear. That gear worked for us through the day that the tractor went off the property, in the hands of it's new owner, about six or seven years later.
It was a huge lesson in patience for me. But I like this method much better.
Well done you! There are few people today who could, or could be bothered to do this, but I am sure this job gave you great satisfaction when it was finished, and working again.
Thanks--that must have been quite a job. I'm familiar with those Ms.
Englishman French
Thanks for watching
A very well made instructional video! The black paper with white text is a nice touch. Really shows up nicely on video.
Thanks. It cuts the glare. The black paper is hard to find
Crystal clear demonstration, giving me the courage to try it out. Great video (as usual). Thanks for sharing!
Thanks
Mr Pete i am going to cut my first gear very soon Lord willing, thanks for showing me how its done.
another great video Mr. Pete ! Thanks for sharing !
Thanks
Thank you for making this video. It's very clear and understandable.As a Fitter Turner/Mechanist, I really enjoyed watching your video.
Thanks for watching
I wish I was working with you in your shop so can learn more from you
Great tips on setting the cutter height. Moving on from the eyeball method :-)
Another great video, Mr Pete.
Thanks
Thanks for watching
That is such a beautiful indexer 👍
Excellent as usual Mr. Pete. Thanks!
Thanks
Wonderful demonstration of direct indexing. Looking forward to watching the plane dividing method. Always a pleasure to watch all your videos!
Thanks for watching
Great vid. Especially like the extra teaching effort to use black stock and silver ink. Thank you.
Thanks for watching. And thanks for noting those details. The black paper is hard to find
Excellent presentation, professor . . . makes me want to go down in the basement and cut some gears! Keep up the good work on your videos; I've learned more from them in the last year or so than all the community college courses I've taken over the last 20+ years. 2thferry
THANK you very much--keep watching
Great video. When the time comes that I am set up to cut gears I will refer back to this video. Thanks for the video.
Thanks
I LIKE YOUR JOB VERY MUCH . so perfectly you used your knowledge with hard Experience . Very Thank u .
Thanks, Mr Peterson.
From this video, I can see the advantage of direct indexing over indirect indexing. One is much less likely to incorrectly index due to a missed count. It's certainly not impossible to make a mistake but it's less likely. I suppose you could have an index plate for each tooth count if you were making them in a limited production environment.
Nice work.
John
Thanks for watching. Yes, they do make special plate for production of odd gears
I rerrèè
The easy and fine way of cutting gear .
How
Lovely dividing head, great demonstration / instructions!
Smaller gear counts are often used in clocks and watches, six leaves / teeth is common, some earlier verge escapement timekeepers even used as low as five, tricky to get the depth right on those and you're cutter needs to be exactly on centre.....
Kind regards
Daryn, Southwest uk
Daryn Radcliffe Thanks for watching. I had never heard of gears that that few of teeth
found that very interesting really enjoyed it mr pete excellent tutorial
i bet you were a really good teacher
And still is!
Thanks for watching
pbooth001
Quite a complement
i enjoyed shop when was at comprehensive school they were my last five years in school i did a cutaway engine and rebuilt a lambretta scooter i also did some lathe and will projects but i really enjoyed the forge 1976 to 1980
Very good thank you very much mr Pete
Nice, do you know if these cutters are available for timing pulleys as well. Like T5 for example?
thanks for a very informativ and easy to view vidoes, i like realy like the lenght and amount of information you put in to all your videos. and this on gears are realy intersting.
//Morgan
Thanks for watching.. Lots more to come.
Love your gear cutting series. REALLY hope you change your mind about the helical gears though. There are so few videos online involving helical gears.
Cannot be done on my machine
Mr Pete pardon me I got one question: how did you loosen the chuck you didn't cover that operation. what is the correct way to do that.
thanks as always.
Did they teach you those things in high school??? Thats Amazing!!!
Hi, great video. Which rpm speed is the milling tool turning at?
I like the direct indexing method.
Hay mr p In the machinerys handbook under simple compound and differential indexing it shows the charts for dividing for divisions for brown &sharp 3 plates & Cincinnati standard plate dividing heads
Thanks--I will take a look
mrpete222 Yelp iam on the other end of illinois in karnak southern il on the ohio river
I need to make a 127-tooth gear for metric threading on my lathe but I have no dividing head (and even if I did, no plates support 127) so I plan to use my rotary table and print a table of angles from Excel. I was planning to make a carefully-centered jig to hold the gear blank, but it seems like using centers with a bolted dog would be both better and easier, so thanks for that. I always wanted a center for my rotary table... 😁
👍👍
Thanks for the Video. Have some gears to cut for an upcoming project. Was hoping to find some cutters at an auction but no luck. guess folks around here don't use 14 1/2 pressure angle 16 pitch gears.
Thanks--cutters are hard to find
Very good presentation for a wannabe machinist like me. Thanks
Thanks
pitch 12 you mean, 12mm pitch? do gears come in metric and imperial? I need to cut, 2 gears to make a tool to rotate a "modern metric" engine from the flywheel ring while its being overhauled? How I am going to know what gear cutters I need please. I have a starter motor gear from the same engine to help me out, " if that helps" Thanks for your interesting videos.
Nice one Pete
Thanks
Great Video, Once set up is done it's fast. Very interested in the next video on Plain indexing- I'm wondering what the need for Plain over Direct indexing would be ? I try to remember to keep things as simple and as easy as possible if the results are acceptable-as I have a tendency to "Over Think" things and make it much harder than it should be it gets me into trouble every time! lol
Thanks. The plain indexing is much harder
would this be exactly the same DP that uses the Atlas 12/36? I have that lathe and for some reason it look very very close! but it could also be a bit to big for that lathe. Plus, I don't have nothing to loose asking.
Migueldeservantes Atlas is 16 DP
Very nice Mr. Pete. Just how much would have that dividing head had cost brand new?
Lots, I would suppose
Hi mrpete ,
When you set up the mandrel on the mill should you be concerned which way the taper faces in relation to tool travel? Just wondering if the force of cutting harder material could loosen the blank on the mandrel if it were facing the wrong way. Or is pressed on hard enough that it's not an issue?
Yes--I think this is explained in the next video
mrpete222 Thanks for answering !
Hi mrpete, the first time cutting gears is a little more intimidating, but after a few errors and a little practice, the main challenge is not to go in the clouds and make stupid mistakes by being in the moon...
Pierre
Thanks--very true
You contributed to make good machinists by teaching all your life, I'm lucky enough to have been taught by devoted people also. If I can undergo good machining projects it's their achievement...
I know you're a busy person, but you're invited to peek at what I'm doing on my channel, a comment from one of my mentor would be greatly appreciated.
Pierre
Another great video Mr Pete - thank you so very much! A few related questions remained in my mind; a) Was the mandrel that held the aluminum gear blank tapered or expanding? b) Was it a purchased mandrel or one you made? c) If you made it, is the machining process covered in another of your videos?
You are an American Treasure, Sir!
Thanks for asking this. This was my question too. Agree on the treasure.
ramosel
I believe that mr pete said that it was a press fit. I would be interested in this as well. How much interference was required to keep that blank from moving on the mandrel???
*****
Thanks. Its got about a .001 taper on it. I don't know where I got the arbor.
I have a very old Brown and Sharps indexing head about that size. I have seen some videos on dismantling and servicing one. It looks crazy complicated. Do you think a hobbyist can do so?
Yes
Hello MrPete222. I am having trouble locating the books you have suggested. Any ideas? Would appreciate your help.
Mike
EBay is your only hope
thanks for the video sir.
Thanks
i wonder if those gears are usable.
I have a question Mr. Pete, I have a machinist friend I help research parts and tools for him on the internet, as he does not use internet? He needs to gear cutters and they are cutters for a spline type cutters. The gauge he brought over for me to look at has marked on it 7/16 DP 30 degree he also brought the spline for me to see. The outside of the spline has 25 teeth the inside of the spline has 19 teeth. The spline gear OD is 3.72 ID is 2.65 its a big gear I called Ash Gear company but they have no such cutter? I have no idea what I'm looking for other then the 7/16 DP 30 degrees the spline cutters need to cut 25 teeth and 19 teeth and not a involute cutter? Any help on this ! Love your videos by the way. Mike E
sorry--that one is beyond me too
After several hours of looking I found nothing. What this gear was comes off a home made hey moving slide? and it was pieced together from a multitude of spare parts etc. What he ended up doing was making a hss profile single cutter and used the mill as a single vertical profile cutter, took him 2 hours to cut the inside and out side spline teeth plus a new shoulder he told me. I do enjoy your tip's.
Very nice Sir.
Thanks
Can you tell me what exactly does a cherrying head do?
Nik C. Colyer 5b
well done
Is it not better practice to lock the dividing head spindle to reduce chatter & consequential wear transmitted to the detent ... also do u make any effort to elliminate backlash when indexing ?... 😕
Yes it is a good idea to lock it. And to prevent backlash, I am very careful to never overshoot the mark and then back up.
@@mrpete222 thanks for the reply Lyle... an old vid but a goodie 👌😎
HI MR. PETE, DO YOU REMEMBER WHAT YOUR SPINDLE RPM WAS ? THANKS JOE LOVED THE VIDEO !!!
Do not
What is a source for the cutters?
When you said "that in reality you can't cut a gear with less then 12 teeth"! Is that because of gear diameter, cutter size, size of mill, etc.? I mean, you really could cut a smaller one, you would just need right equipment, correct?
Another great video by the way!!
Thanks. Try to visualize a gear with 3 or 4 teeth. It helps to understand
nice job.
Thanks
Excellent Tubalcain, and very easy to understand! AND,,, such a cool dividing head! Thank you for sharing... :o]
O,,,
mystery steel will dull a 79$ cutter after 1 tooth and go bap bap - needs a special horizontal mill. or maybe a gear shaper
This may be stupid question but couldn't this same process also be done with a rotary table mounted at a 90? add in some math to figure the degrees of rotation?
Yes--but you have to calculate the degrees. Much more chance of error.
can you show how to cut a gear rack?
he did, a couple vids back
He did a couple videos back.
I would guess you must have a lift to move that dividing head around eh? That thing is a monster.
Its heavy 160 lb
Do it on the part. Then put a small dowel in the first cut and dti each side
Thanks
Nice lesson Lyle --------------------thank you
Thanks
good
Best done on a horizontal if u have one
Yes
B'guess and b'gosh there was a gear hiding in that piece of aluminum.
You got it
جميل جدنآ
Thanks
just what the doctor odrered I just bought a BS.O the little brother to yours$349.00 on eBay tail stock all the plates and all the fixings did not realize how big it was till I got her home my bench mill is not tall enough for straight-up use I will have to use my drill press!!
dont use your drill press
Agreed, don't use your drill press. The spindle clearances are too loose and the bearings aren't designed for the side loads.
Find a way to adapt your mill. Or get a bigger one.
i wood only use the drill press for bolt circles I realize you cant do any milling !
That was a good buy. Yes, I needed my son in law to help me mount the thing on the mill
I can cut is a fart🤪
Helical gear cutting miling mashing lead fhormula