Turning a Pair of Gear Blanks for a Reed-Prentice Metal Lathe
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- Опубліковано 4 жов 2024
- I am working on a project that a viewer asked me to help with - making a pair of gears for a Reed-Prentice Lathe. In this first part, we turn out the two gear blanks on the metal lathe.
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I can see my Dad standing off to one side with that stern look of his, knoding in approval, every time you took a measurement. Well done Keith 👍
Just to let everyone know Keith did a fabulous job making the gear set. No one else would do it for me.
When I we installed the gears it worked like new. They give the high - low range to both the feeds and threads.
Thanks again Keith, Your friend Laddie.
I just wanted to let you know that I’ve learned so much in watching your videos,, thank you sir..👍
Thanks Keith, I'm not a machinist but I sure enjoy acting like one. Every move you make, every tool, every procedure, every measurement you make, is educational. Thanks so much!
Kieth, I speak for myself, when I say, thank you for not doing a time lapse on the machining of these parts. The transitions of cutting away and coming back, made for a very enjoyable to watch video.
I really enjoyed the real time showing of you machining parts, it was nice to see real time feed and speeds on machining parts, as well as the explanations you did throughout the machining processes, it made for a very educational and enjoyable video to watch.
I love watching you take a raw piece of metal and turning it into a beautiful machine part. Thanks Kieth!
Hi Kieth another good example of why you have so many followers nice clear descriptions of what needs doing and how you achieve it with good video work thanks from West London UK
I dread making gears, its nice to watch and pick up tips, looking forward to seeing the project to completion
You make it look so easy Awesome video
As always great Craftsman Ship Keith. carnt wait for the next one on Teeth cutting an the keys
Great ! So happy you're back on machining work !
EVERYONE GET HYPED UP FOR 100K
Good to see good things happen to good people
*hyped*
I'm hyped up for gear cutting and 100k
Thanks Keith. Appreciate all the details, the relief cuts and breaking the edges. My understanding is that sharp edges can cause stress cracks. Looking forward to part two. Thanks for sharing.
Keith, I love your videos. Your close up shots of taking .01 off is very interesting to me, yet I'd like to see you turn the dials and levers on the milling machine so I can tell how you are manipulating the machine to make the cuts.
Nice work, I am looking forward to seeing those gears get cut...
Hi Keith,great video,thanks for sharing,enjoy every video you make.thanks Ray
Great job, as usual Keith. Looking forward to the next part, where gears will magically appear out of the blanks ...
Cool job. I always like to see stuff fixed up new.
Keith I love your videos I've always wondered how they cut teeth in gears and made those shafts it's real interesting ! 👍😁🇺🇸
Quite a loaded episode, I love it
Great work there Keith. A fun job.
Nice project and attention to detail on the different parts of the piece.
Nice work Keith.
Nice turning Keith.
It is good that you will help a person out. Even with a busy schedule you still find the time. With all the time you spent at the museum shop I know it must feel pretty good to be in YOUR shop now using the equipment you have restored. By the way haven't heard from the Backyard Machine Shop lately. Have you? I know he was taking time to help his parents some.
thank you for the video keith nearly 100k well done
AWESOME JOB ! looks great Keith , Thumbs up man ..
Keith, great video thanks for sharing.!.!.!.
Great work Keith always very interesting
Nice video, glad your able to get back in your shop!!!
George Swindoll J
Mike Davis ???
Thank you Keith!
Thank you for sharing, good work and video, have a nice day.
Some great work there Keith. Yes i am new here, but like your work and style of videos...have a great weekend
Looking good!
Another episode enjoyed.
Always enjoy watching your videos, but I will say I am really wanting to see the videos on your restore of your big Radial drill press.!.
good to see not all things are made on cnc lathe I like to make all my parts the old way just finished an iso 40 arber for my mill I have retired after 54 years in famley engineering bisness
fantastic! thank you!!
Nice job.
super interesting video, thanks for sharing
Two ideas on explaining why the gear appears more worn in one area than the rest. If the machine sat unused for a long time, it's possible moisture and filth collected where that gear meshed with another gear. In that spot the gear probably corroded the fastest. Also, the gear has an even number of teeth. This also leads to uneven gear wear. IIRC, they try to go for odd tooth counts so that any deformations in the gear shape will meet with a large variety of places on the mating gear, and not with the same tooth or same group of teeth. Just a few thoughts.
Great Video Thanks for sharing
Great work as usual, Keith! It looks like that shaft material is actually 1018 given the way the chips came off there- a familiar sight in my LeBlond. I'm sure it won't matter though.
THANK YOU...for sharing.
great stuff as always and congrats on 100K!!
After finally getting a passable gear cut for the concrete mixer, I was hoping I could give that a rest for a while, at least until I was able to obtain more tooling.
Not so. I was checking over the old Buffalo Forge drill press the other day, and discovered that the back gear was missing a tooth on the larger one. I'd be tempted to just pull it and send it to you or to Keith Fenner, but it looks like both of you have enough on your plates for the moment.
looks good
Great video, Keith! I just realized that I have been watching your channel for over 4 years now and I remember the shop when it was just a dream. But, just to keep you honest, when are you going to finish the safe? You built a furnace, etc. and all the other goodies. Loving to watch you melt and pour and lathe those dials! Now the shop is a reality and I'm wondering where the cat that was always hanging around is?
Rich
Super interesting...
Now I just want more....
On more than one occasion, AvE has talked about how precise machinist tolerances are, but I don't recall anything that Keith has made since I've subscribed as having a critical measurement.
The ends of the little shaft are fairly critical. The fit for the hole in the gear blank matching the journal it goes on is fairly critical. The diameter of both gears is fairly critical. He's not building a space shuttle. :)
DSCKy that's what I get for trying to make a joke via the comment section
old things didnt tend to use sub 10ths thou clearances and repeatability cars used to need running in and were tight, modern ones not so, keith tend to work on 50-100 year old industrial stuff, which a thousand in the right place is eeough, not every measurement of an item IS that critical, but bearing surfaces usually are, but other parts are clearance, and dont touch anything
DSCKy, on that subject, I commented about the possibility that the ends might in fact be metric to fit a ball race (0,591" is as near as dammit = 15mm) and therefore would need to be exact and not have a bit added for wear, but it seems to have been deleted, oh well....
great to see you back and doing projects. i'm curious, why didn't you turn the bearing journals oversize and polish them to a final fit? looking forward to to the gear cutting.
good video thank you
enjoyed
As usual. Excellent work.. While I've sure that what you are doing is top notch, I'd question your customer about the condition of the gears that these 2 gears run with.. I suspect that the reason why some of the teeth are narrow and others less is that the gear it runs with is 1 to 1 with the gear you are replacing.. Again always enjoy your videos.. I do think you need to see machinery collectors anonymous tho.. :-)
Hope there is no way for that dog to pop off and come flying at you. Always gives me the willies when I see those dogs whipping around like that.
They usually have a hole and are fitted around the workpiece so they can't come off, though it might rattle a bit if it cam loose
I am curious what the mating gear to the 12 tooth gear looks like. It can't be good.
*??? help, i am not a machinist whatsoever. What are you pointing out?*
@@RobertFay Gears are used in pairs. The mating gear (it's been 2 years since I watched the video and am not going to go through it again) has to have damage. It won't be just wear if the teeth have ripped off the gear he's remaking.
Keith,
Wondering what your criteria are for accepting these jobs. With your regular job, the museum and all your own projects, it seems you would be swamped 24/7. It seems to me that the guy could have done everything himself on his own lathe in manual mode. A quick search found a brand new 40 tooth Boston Gear on E-bay for 20.00 and a 14 tooth for 5.95- if the shaft was not bent, he could have just turned away the old gear and pressed a new one over a woodruff key.
SHOPMASTER/SHOPTASK Registered i
This is why people send him such nice stuff!
I can't speak for anyone else, but I imagine most people who do send him projects also aren't in a huge hurry, understanding that other things may come up that require his more immediate attention.
I'm just wondering why "machinists" with "problem machines" are viewing all the machining "how-to" videos by dozens of different "celebrity UA-cam machinists" and why they need to send their "work" to another "machinist" to have things done for them and how they know where to "ship" their "projects" when the "UA-cam celebrity machinists" who claim to have "viewers" sending them things right and left don't publish their addresses on their channels or in their videos. Sounds like a bunch of bullshit to me.
All UA-cam "celebrity machinists" are "swamped with work" but just not enough that they don't have tons of time for "special projects" from "viewers" who are supposedly "fellow machinists" and never run short of time to make their weekly videos but also never seem to have actual work from actual "walk-in" paying customers to show in their videos. And they have AMAZING "fellow machinist" viewers who buy things they don't need at "flea markets" and "garage sales" and on "eBay" and then graciously "donate" them to their favorite "UA-cam celebrity machinists". And usually JUST IN TIME for a "how-to" video. That's REALLY common among the "UA-cam celebrity machinist community" where being a "member" must have its "privileges" and come with amazing "good fortune" to have "comrades" who run around buying things they don't need and somehow magically know which "comrade" DOES need or want them for a video of their own. I don't personally know any machinists or mechanics or electricians or plumbers or HVAC repairmen or welders who have so much "spare time" and "disposable income" they can put hours per week into "how-to" videos and shopping for unneeded/unwanted tools to "donate" to their "fellows" in the trade or who would want to spend their "free time" in the shop where they spend well over a third of their lives anyway or who throw "disposable income" at more tools and particularly used tools from "flea markets" and "garage sales" when MOST "mature" trades people who have been "in the business" for many years on up to decades usually have pretty much everything they want/need by the time they have much "disposable income" to play with and its pretty much only AFTER they've purchased everything they want/need that they HAVE "disposable income" period. And most "tradesmen" who are interested in "educating" aspiring trades people and "passing on" or "passing down" their "surplus" tools and materials tend to do that passing to "rookies" and "amateurs" rather than other "professionals".
Most of these "professionals" playing "expert machinist" on UA-cam are "educators" alright. Shop class teachers of some sort or another and with all kinds of "theoretical" knowledge and enough "experience" to have gotten their "teaching gigs" even if it just meant bullshitting "administrators" and with no doubt a "steady supply" of "surplus" and "scrap" equipment and materials that just happens to "follow them home" from WORK. The only "blue collar" professionals that put in a "work week" in the "shop" and just can't help going back for more at "home" are the ones that may have "formal education" and/or "training" in a technical trade but sort of "forgot" to actually leave the "education system" and have been "learning on the job" on the taxpayer tit doing "government work" ever since.
When you have "professionals" happy to take "freebies" from "viewers" and those "freebies" are pretty expensive and in many cases "rare" or "unusual" machine tools they bought without needing and "selflessly" volunteer to do "work" for "viewers" that magically know where to "mail" their "projects", you probably have a bunch of "sticky-fingered" government-employee "educators" or "administrators" or "engineers" at a university, technical college, "national laboratory" or other "government facility" that have regularly raided the "surplus" and "scrap" equipment, tools and materials "inventory" on their way "home" for the night/weekend and have been "tooling up" and "stocking up" their "home shop" for years or decades and at some point after "going public" on UA-cam and who knows what other internet "social media" sights realized the "general public" can and does access UA-cam and other social media sights and can even use computers and do Google searches for "government employees" with seemingly endless amounts of free time and expensive tools and materials in their "home shops" they just can't shut up about in their "how-to" videos and had "Uh-oh" moments when they realized at SOME POINT they might just have to "account" for the "origins" of all that expensive, heavy, bulky, special, rare and expensive "hobby equipment".
Those nifty little cutting inserts they all seem to have "laying around" by the dozens can go for $10 to $30 a pop and that's the "cheapest" consumables you'll see these "blue collar workers" going through as they "work" in their otherwise "empty" home/personal machine shops full of tools and materials and supplies they apparently "acquire" needed or not and apparently "just in case" an actual "customer" ever comes in and wants to pay them for their services. Of course the other odd thing about these "professionals" is the way they can be "working in the shop" for anywhere from 30 minutes to an hour or more and not ONCE in ANY VIDEO EVER get "interrupted" by a RINGING PHONE or "VISITING" CUSTOMER.
Just try to forget that as "government employees" they're pocketing more money than the "average worker" and get a freaking pile of "holidays" and big fat pension and premium health insurance usually including dental and vision and all kinds of other "bennies" BEFORE they get to raid the "surplus" and/or "scrap" tools/materials and no doubt use significant amounts of their "downtime" at "work" as well as taxpayer-provided "devices" and internet access and probably the "services" of OTHER "government employees" to "catch up" on their "work" from their other "jobs" like making UA-cam videos, ordering "swag" to distribute among the other "celebrity machinists" on UA-cam, posting all their highly important "social media" content to Instagram, Facebook etc. and of course "shopping" on eBay for tools they don't need/want they can "donate" to their "fellow machinists" to keep the whole "gravy train" and "wall of silence" up and running lest somebody not get his "swag" from his "brothers" and turn "whistleblower" or something when eventually somebody figures out just what REAL "connections" besides being "fellow machinists" all these "professional machinists" who all seem to have the same "playbook" and of course black books with each other's addresses and personal info in them have that's "bonding" them together so tightly in words, deeds, hobbies and even their "charity work".
Hi Keith, Another great video. Have you got a new camera, picture looks nice and crispy!
Makes you wonder what the mating gear condition is.
Indeed
@@meyawabdulaziz3863 Believe it or not the mating surfaces are fine.
@@cannon440 awesome
Who built the first metal lathe? and how did he make the parts for that? ...all lathe parts are made on a lathe!!
Could it be that there was some runout that caused the forty tooth gear to wear unevenly?
I'm always surprised how close to the chuck you make cuts.
I grind things a little different than you did.
I grind between dead centers. I think it's a little more accurate. It is by far my favorite way to grind. Where I worked we had a gage pin that had a engineering change . The pin needed .0002" taken of it . Their gauges had to be ground to the high limit. + or minus nothing.
The tolerance was the wear of the gage . The day shift forman thought it was a joke. I told him give me a shot at it.
The centers in both ends were recessed to protect them from damage. I first put it between centers . With a tenth indicator it ran dead "0" at that point I knew I had a chance. Long story short I did it. But if not for the good centers I wouldn't have a chance.
I use carbide tipped centers they hold up much better.
Your choice on the steel for the smaller one was good. It takes lot more abuse than a larger one.
I can see that on a lot of the machines you work on making new parts is your only option.
Keith (or another knowledgable person)- what would cause a gear to have such uneven wear on its teeth?
Thanks
Hey Keith. Is there an alternative method to machining the finish on the pinion using a 3 jaw chuck and a center versus between centers?
Keith: In your opinion, what is more accurate/precise: indicating in a four-jaw chuck with a tailstock center on the other end, OR, turning between two centers?
Question: Would it not be better to make the spindle gear in two pieces. One for the spindle and the other a press fit gear with a key lock or a pin? Would this save from having to make a spindle every time the gears wear out?
Maybe, but it shouldn't wear out for another 50-60 years?
yep it will last another 60 years, let someone have the job then!
Yes getting close to some silver
say Keith, looking at that stub shaft it almost looks like the key way is synced with a tooth. or is it a mox nix application? it's always hard to tell with old lathes sometimes
What is he saying at 14:50? "Right on the money"? :)
Joel Kernel that's exactly what he said, it means it was to the exact size. If he said on the money and change it would mean it was oversized by the " Change"
Hey Keith, there's a guy here in Daytona that has a 50 pound little giant power hammer that he wants $1,500 for if you or anyone you know wants it, that's real cheap.
Keith what is the noise in the background, sounds like a steam engine running. Thanks for the great videos, it's the first thing I check every morning when I turn on the computer. I'm a former machinst (retired).and fabricator and designer for equipment at a LImestone mill.
i think its his air conditioner, there usually IS a steam engine running when hes at the museum, whistle and all
I think it's the main motor for the lathe
I would never do that with my calipers unless yours is made out of high speed steel or a metal made for cutting.
Hi Keith, if you flipped this around in a 3 jaw, how do you know both ends are concentric? Is your 3 jaw that good?
He did say that he was going to finish it between centers.
Doh, i didn't get to the end!
10:58
I wish I had my own shop. Being poor and living in a room is a bit limiting.
What is the measurement or calculation for getting the od on that broken smaller tooth?
number of teeth plus 2 divided by the pitch circle diameter will give you the blank od
OD = (N+2) / DP so for 12 and 40 teeth in Dimetral Ptch 14 (I think he said) we have (12+2)/14=1" and (40+2)/14=3"
Hey Keith, just a simple question, why do you use a concave grind on your parting tool? Thanks. God Bless Ya Dave
He never answers UA-cam comments. You do realise that grinding wheels are convex, hence they grind things "concave"?
Why do you not normally like putting a lot of oil on cast iron.
because a cast iron have a lot of graphite in his structure and this is a lubricante, like a pencil
cast iron doesnt make chips it makes iron dust, iron dust and oil = abrasive compound
What do you have planned for the eventuality of reaching 100,000 subscribers....?!?!??! Very few get to that point....!!!
MAYBE....a VM shop apron....with pockets for pens, rules, et al. ?!?!!?
Hey Keith what RPM where you running this at?
Is it the sound system, or does that lathe run a little noisy?
thought the same! this leblond lathe have straight toothing on the gears, i think.
CaptAndy Yes it sounds like a cement mixer. Keith damaged the new motor bearings when he replaced them. He also dangerously overtightened the new belts so I suspect those noises are not good news for the lathe.
Its hard to say just by looking at the video, but it almost looks to me like the teeth on the big gear, rather than wearing unevenly, that the worn looking teeth may have been submerged longer than the rest, rusting them away, where the full teeth were above the water line and didn't suffer such a fate.
11:44 live center -
"HelloKeithRuckeratVintageMachinery.org"..... deep breath
Ahhhh, what the heck I might as well say first. lol
dejanira, congratulations ol'sport . you might have won a bag of swarf and cuttings if you ask Keith nicely.
Do you make any adjustments for the gear diameter to allow for wear and rust?
dejanira2 it’s a calculated diameter not measured , based on the tooth count and DP or mod
try putting some real honey on that little bo bo for fast heal
Non
i really enjoy the vids and new angles, but not a big fan of the behind the chuck angle.
The camera is not a fan of having chips machine-gunned into its lens.
JL Software Solution: UV filter.