BROACHING INTERNAL GEARS ON LATHE
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- เผยแพร่เมื่อ 30 ก.ย. 2024
- Hi all,
I need some planetary gears for my model ...
I had an old battery-powered drill with this type of reduction, but unfortunately too high (1: 6) and non-standard metric module (0.7), so I decided to turn my lathe to a broaching machine ... I used the gears of my lathe that give me the chance to do almost all possible divisions. Now I can produce my own planetary gears with a 1:4 ratio!
If you have patience, you will find more videos on my channel of this work ...
I leave the link anyway:
Broaching internal and external gears on lathe
• Broaching internal and...
Broaching external gears on lathe - planetary gear
• Broaching external gea...
How i converted my lathe in a turn table (INDEXING EACH TOOTH)
• How i converted my lat...
RC TRUCK ASTRA HD7 52 66 POWERTRAIN
• RC TRUCK ASTRA HD7 52 ...
Making the hubs of the central axis
• Making the hubs of the...
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Fascinating use of a lathe.
I've never thought to do anything like this.
I mean, it's a lathe, it does things while it's spinning LOL
Great job 👍, Thank you for sharing this.
@CLAUDIO GRASSI how did you made the tooth for broaching the internal gear?
respect,nice work , but a loth of " grasso di gomito "
Thanks for sharing my videos! Google translator often badly translates phrases ... in Italian is called "olio di gomito" and I assure that there is much wanted! haha
the steps are very light and the effort is minimal. When I finished the work I had not even register the lathe!
That is a show of talent and also of patience.
Thanks Robert
Everything was perfect but you never showed the indexing mechanism
take a look at the links above...
As promised I have uploaded a new video ... "How i converted my lathe in a turn table"
tank's for the lesson
A true machinist ! Pass it on !
while having an excellent sense of proportion would be impossible to build a gear that will work ... I built a mechanism to be mounted on my lathe and turn it into a sort of rotary table. Can you see it in my video "Broaching internal and external gears on lathe". Hope this helped, thanks
see the links above! you 'll find " How I converted my lathe in a turn table"
These reductions are for a 1:6 scale model that I'm building. They should be placed in the wheel hubs. If you have the patience to look at my channel you will understand better.
Hi Claudio, how did you get to the right profile for the internal teeth, I want to make some with close tolerances to eliminate backlash in a small gearbox (metric/inch lathe dial) and can't find much on tooth shape - i also need to make two internals, 120 and 127 tooth, both to mesh with a single planet gear, so the tooth form may need to be a bit strange... Any links you can suggest?
Great video, and I love the headstock indexer, elegantly simple!
Awesome
nice!
I'm curious about, at which point it would become economical to buy/build a machine which would automate the process. There's another video where a guy converted a tabletop cnc mill to do something similar.
I only wish cutting internal teeth was easier :(
I know! But it is not my job, have you idea of how much cost a rotary broach?? ;)
make one! you seem like you have the ingenuity to do so, they're really not that complex
and the required pressure to cut a gear that size with a Rotary Broach is how much.....?
Oh. Good job, Claudio. It's a bottler.
Mind blown.
CAN YOU TEACH ME HOW CAN I MAKE THIS KIND OF WORK, I MEAN THE WAY THAT YOU USE THE CHUCK TO DO THE DIVISIÓN!. IS NOT NECESSARILY A CHUCK WITH GRADES?
so how many broaches? i hope it was only a few otherwise i would imagine it would take quite a long time to do that all the way around the ID
very good idea
Amazing work!
Beh in tal caso cambia tutto. Comunque un ottimo lavoro, sia nel calcolo delle geometrie sia nella realizzazione artigianale. Le ghiere potrebbero scorrere molto meglio se, al posto delle bronzine, riuscissi a infilarci 3 cuscinetti a rulli...
allora ti ho visto tempo fa' sono uno dei vecchi del forum ,uno dei primi che ha dato vita al forum dal 2002 maxstralis
ora nn ho tempo per scrivere ma solo di leggere ogni tanto
i run gear shaping machines! you could cut that profile once set in about 2/3 mins! you have so much patience!
how do you block the spindle in this lathe and how do you measure the turn distances for each tooth?
Nice work. Great video. Thank you for sharing.
Sbagliato: la parte sinistra compie 4 rivoluzioni per riallinearsi alla destra che ne ha compiute 3). Ripeto: ratio 4:3.
after watching the entrie video it answered my question.....no shit.......FUCK THAT!!!!!
nice!
Certamente ho visto ............sei in italia ?ma sei menbro del forum mmt vedo una cabina astra
Yet another brilliant demonstration of precision engineering practice!
Thank you!
why does the whole house shake when I run my Lowes bench grinder?
if you're patient I try to make a short explaning video ... is too long to explain, and I fear that the translation from Italian to English would be very difficult to understand, the translator often does not recognize the technical language.
Where I work we make intermediate shaft couplings for turbofan engines out of stainless steel. The coupling has internal and external gear teeth which are broached on a CNC lathe using a boring bar with a special insert.
I agree with you, but the cost to turn my lathe would have been very high in Italy! Mine is a hobby and I did not need a mass production, I also risked to change my lathe without being sure of the result. If the measures of the gears were standard I would have gladly bought!
Da quando ho fatto questo video, le riduzioni sono andate al loro posto, lavorano costantemente in bagno d'olio e sembra che i piccoli attriti iniziali siano definitivamente scomparsi con un po' di rodaggio...
Se ti va puoi trovare un po' di foto del modello finito sul mio profilo Facebook, trovi il link sul mio canale. Grazie per l'attenzione e per avermi fatto notare la discrepanza nel video.
with the help of autocad I designed several 3D models of the teeth, then interpolating them I found the right profile. due to the small size I could easily approximate the curve in an arc of circle and then with the help of grinder and milling machine I modeled the HSS tool that you see in the videos
Yes, in fact I have already given an answer to these questions ...
for indexing the spindle I used a tool that you can see in the video "how I converted my lathe in a turn table"
The calculation of the teeth I did it with the help of autocad
this is a part of the job, I had to produce 6 complete reductions (6 external gear and 24 internal gear)! It took about 45 hours. you can see the results in the video "Broaching external gears on lathe - planetary gear"
Hai ragione, quello che si vede nel video è esattamente quello che dici tu! una gran svista da parte mia. Il rapporto di riduzione è comunque 4:1 poiché la parte che faccio girare con le mani in realtà è fissa e gira l'albero che nel video è stretto nella morsa...
I used autocad to draw the pieces, but the calculations of the teeth I made them by hand! autocad alone can not do everything ... a book on mechanics would be very helpful!
ho costruito un attrezzo da accoppiare al tornio...
se guardi il video che ho appena aggiunto nei link della descrizione penso risponda meglio delle parole.
il video è "How i converted my lathe in a turn table"
he probably has an index wheel on the back of the spindle
I answered a question similar to yours some time ago with this video:
How i converted my lathe in a turn table ( you can find the link above)
enjoy it! ;)
I run gear shapers as well hope or not on production lol
perché affermi questo? se guardi la fine del video è evidente che devo fare 4 giri della parte di sinistra per completarne 1 su quella di destra...
How do you rotate the chuck by just the right amount?
When u open chuck and part swells back to much runout
Thank you very much! I have more videos on my channel on this work, if you have patience to look, you'll find explanations.
Brilliant I've been scratching my head wondering how to do this wouldn't of thought it was possible to do it on a lathe.👍👍👍👍
Gear ratio 4:3...
Great job. Plenty of patience required. Thanks for teaching.
Now I know I can make shaft to shaft couplings using this method when my lathe comes in...
Would be nice to be able to power the carriage instead of turning the hand wheel...but just being able to broach in an advantage...
why you breath like you in jungle mann.. im trying to watch your video
Great job! We made clock barrel gears that way years ago. hey were not internal teeth though. Awesome work Sir.
Maybe you already answered this, but how are you indexing the spindle to achieve the correct pitch? An indicator? And how did you arrive at the number? Calculations for pitch?
Brilliant! Now I just have to figure out how to accurately grind the cutter insert...
Hey, I want to do internal broaching to certain length. As per drawing after the spline profile, there are internal threads.
Hi, you can model some hss piece or search the proper insert on internet. I know there are many factories doing that
Did you harden and temper the gears after machining. If so, details of the process?
I didn't it. I had no carbon steel available at the time
the lathe has not changed, I use the main slide movement with rack and pinion
good job bob
10 years later. YAY I'm finished! :) jk.
now I DEFINITELY want a lathe! Nice work!
It looks pretty hard on handle and mechanism of the lathe. Not sure I would do this on my king canada.
Good works, very interesting
how lathes can cut threads less than 1 mm ? I'm going crazy and I can't understand this.
is there a reason why you did not use stepper motors to do this precision work of turning the index and the shaft of the work piece? you know micro stepping for each tooth after a insert of maybe 5 or 15 passes then move on the next tooth?
Come fai a dare il giro sull'autocentrante ?
Bravo Claudio.
grazie mille!
poor, poor lathe... :D Anyway, nice idea and job.
certo che sono in Italia, e pure nel forum mmt passion... sono ASTRArc!
good job!!! keep it up ............greetings from Kentucky.usa...........
Lack ways ! Why ? Good keyways must do right even on Lathe . How is right ? Cutting tool for key must right size of key and must right the center . This was a Fake work !
????????????
When you showing . . .must perfect !
How long did this take in total?
Congratulations. a question, What its your model lathe?, thank you.
thanks, my lathe is an Optimum 250x550
Very nicly done!
I left a comment on your channel, I hope it has arrived
What kind of cross slide are you using? Mine is just a standard screw type.
awesoooooome!!!!!!!!!
Hi! Amazing tecnic on small manual lathe.
But could you tell me how do you move the turret with cutter? by hand or do you have some electric device? If yes, how does it move forward and backward? Thanks and congratulations! Good job!
hi, everything is made by hand.... thanks!
nice. love this video
maybe you have the grinding wheel ovalized!
hello, congratulations for the job.
I would have 2 things to ask yourself:
- The tool for digging you buy in any store?
- How do I turn the chuck for each notch?
thanks
Ciao Carlo, scrivo in inglese ma sono italiano! gli utensili li produco io usando le classiche barrette HSS, per l'indicizzazione del mandrino ho creato un sistema che puoi trovare nei miei video
How i converted my lathe in a turn table
I think the gear ratio is 3:4 not 1:4
two hour to make this gear?
this was the first piece, then times went down but always long because I didn't want to ruin my lathe. today if I had to do the same job again I'd rather build a sort of mini slotting machine
exactly, check out the links above!
What a patience :) Well done.
Very good! Congratulations! Like it very much!!!
for this video, about 1.5 hours
good work.
how did you do that,very nice job.two thumbs up
Impressive. But how do you index the piece? my lathe doesn't do that
Have a look at this my video: th-cam.com/video/lqreWsmXG4k/w-d-xo.html ;-)
good job
Now that what I call devoted, nice work
thank you very much, Rolly!
AGMA 2
Thank you for the videos so it would be helpful
qual o valor que pagão por hora para um torneiro ferramenteiro?????
Very interesting!
Nicely done, looks very tedious.