Knurling of splines with a GROB machine

[@benhoffmann6870]

Grob spline machine comes from Grafton, Wisconsin, USA. Grob was a German immigrant, very inventive. Splines are formed by impact forging. Spline shaft is actually indexed while it appears to be rotating. Grain structure makes for very strong teeth. Grob also made filing machines, and excellent band saws. At one time, he made floats for a float plane, no steps. Couldn't break suction and never took off. His home outside Grafton had a trout pond with a staircase underwater, to watch the trout. My dad worked for him in the 1950's. Now company is employee owned - good stuff!

[@douro20]

This machine is actually Swiss made.

[@anarchistangler]

Interesting story. Reminds me of The Mosquito Coast. There is a Grafton in Australia too, near where I live. No Grob there. Famous for the Big Banana.

[@jdub3815]

I work at Grob in Grafton WI, our machines look way different than this but I assume it's the same concept. I freaking love my job😁

[@dougiebrown9318]

We had the very same Grob machine for hand loading 6,354 Crankshafts & another which was automated for 4,236 Crankshafts at Perkins Engine’s in Peterborough U.K. the automated one knocked out around 34 + Crankshafts an hour, Obviously the operator in video hasn’t got hydraulic assist clamps as we had on ours.. Great machines & easy to fit new rollers & easy to set sizing.. Swiss engineers would come every year, take them apart & renew any parts that required replacing.. When the crankshaft stub end design changed from splined to finish ground surfaces, I believe they were sold off to a company in Pakistan for distribution,

[@DIYToPen]

Soo, that bit spins, and that bit spins, and out pops some straight lines. Mind blown.

[@kryptokrypto702]

Knurling of Spline. Sounds like some kind of kick ass medieval name. Or a title given to someone. 😄

[@davidrussell8689]

I know this machine so well but with a complete safety/ sound insulation. Excellent quality machine tool

[@slateramalgamated7620]

That's good to hear - the only grob tool I've worked with was a bandsaw that in all honestly had probably not been particularly well maintained so I've had a maybe unearned poor opinion of them

[@jackierandall2230]

Fantastic machine learned alot from this video ...thankyou very much👍👍👍👍👍

[@MAD--DOG]

Если не секрет , валики где заказываете ? У нас нет клиентов в странах СНГ ((( Китайские подделки наверное ? Хотя машина очень старая , нет смысла заказывать оригинальные «Grob»

[@MAD--DOG]

О извиняюсь , пришли заказы с «Украинского кардана» , сделаю как для себя !!! Процветания и развития желаю , ну и удачи во всех начинаниях .

[@gerbrut007]

How is it making horizontal lines when the two wheels spin vertically

[@benwilms3942]

Probably helical pattern on the rollers.

[@rogerwhiting9310]

I dont get it either

[@elbone4114]

If it spins slower or faster it would be twisted like a screw

[@mohdfaizul5931]

It was forged...slowly...bit by bit...same as the usual knurling wheels...listen to the hammering sound...usually when we knurl a part we continue adding pressure to the part by the cross slide...same technique, different approach..

[@drunkwaxera4945]

Think like a hob

[@sportytone1]

Splines aren't cut. The splines appear to be hammer forged into the piece.That would make the piece very strong & wear resistant.

[@prabakaranasokraj174]

Splines are usually ground. But rolling spline is better. Watch the operator checking the mating.. Great

[@FGX318]

How weird ?! Having a circular motion to achieve longitudinal grooves … 🤨 some people are very creative !!👍🙏

[@MagnetOnlyMotors]

Still don’t know how it cut the splines.

[@notyou1877]

Hammered them in place.

[@peetydontpass8309]

Interesting now how do you do splines on the inside of a slip yoke?

[@eaglewi]

Why not a broach

[@kwkstar]

I've been a tool maker for 40 years the 1st thing I thought was broach

[@indalcecio]

@@kwkstar riddle: how can you tell how long a machinist has been working in his industry? Answer: don't worry, they'll tell you

[@vijaykumarkurani7814]

Sir can you please make a video on assembly of spindle tool settings and how to adjust tool play

[@tam1381]

That blows my mind.

[@lachlanbird9688]

Thank you for the video.

[@jamshersingh4938]

I am oprtaing this machine

[@2003guidebox]

Hello Jamesh Ji, Hopefully you will be fine. I need this machine. Pls suggest Padam Meena 9810037121

[@wadesmith9483]

No your not

[@karamvirsingh2319]

Phone no ?

[@fatwood8642]

Seems like the splines are being swaged but it's knurled uh.

[@elbone4114]

Let me show you how a plumbus is made x3

[@krzysztofsroga9104]

Das ist Machine Grob?

[@bestamerica]

' what use this for

[@wanda3004]

Nice!!!

[@ezeeusb]

Russian voodoo machine

[@by7569]

Ukraine

[@PavelPavlovich999]

Это не рашэн

[@dallet40]

They stole it in Switzerland.

[@jimmyjennings4089]

I tried to knurl some splines by hand once, i wouldn't recommend it, the whole building collapsed.

[@3убодробитель]

а станок то вывезен из германии и работает !

[@user-6x6truck]

Как говорят дЕванные эксперды.. Придумано в СССР на века и до сих пор работает

[@no_name_fridrikh]

На что шлицевая такая?

[@ОлександрКосолап-м4ж]

Эта вилка идёт в паре с втулкой на рильсане. Размерность креста 57х152, применение очень широкое.

[@no_name_fridrikh]

@@ОлександрКосолап-м4ж Как купить эту шлицевую?

[@ОлександрКосолап-м4ж]

@@no_name_fridrikh напишите мне на электронный адрес и я Вам все расскажу [e-mail]

[@ramiresfreed3428]

@@ОлександрКосолап-м4ж А какие размеры шлицевой части, длина шлицов, диаметр по наруже шлицов? Ответную шлицевую часть тоже делаете?

[@franciscolinares1471]

@@ОлександрКосолап-м4ж QQQQQQQQQQQQ

[@surajdan521]

This is spline bro not knurling

[@leehaelters6182]

Those splines seem to be raised, rather than cut, no? What would you call this process, if not knurling?

[@electech3339]

@@leehaelters6182 I might call it upsetting or maybe hammer forging by the sound of it, but I can't clearly see what is happening inside the machine during the process. Not sure if I'm hearing some sort of impact hammers or what the clacking noise is for sure.

[@leehaelters6182]

@@electech3339, point taken that the process is obscured, and therefor inscrutable.

[@benwilms3942]

@@leehaelters6182 i think it's just roll forming, so the shaft would be turned to a diameter somewhere between the major and minor diameter of the spline, and then when the rollers displace the material from the low spots, it must flow to form the high spots. I think so anyway.

[@johngillon6969]

@@electech3339 Fuck man it's simple. it is some kind of magic they do in machine shops. don't strain yer brain, just be glad you don't work there with all them brutes.

[@SuperArayashiki]

Bravo 👏🏼

[@ARIFINLATHE]

Canggih mas alatnya

[@Music-kz9ol]

Where’s the safety glasses?

[@Draxindustries1]

In his pocket..

[@Music-kz9ol]

Kids, what’r you gonna do?

[@dallet40]

Not necessary, operators lifetime is about six months.

[@АндрейШмырев-х8н]

Накатка шлицев...гораздо быстрее фрезеровки!!

[@dazmatic]

Not technically knurling - more machining.

[@frankbaine3918]

Showed me nothing. Shaft goes in a black hole. A few blurry oil sprayed high speed glimpses of a woodpecker thing. Out it comes splined. Rubbish.

[@boarzwid1002]

Life starts in a black hole

[@boarzwid1002]

So you’re proof that part of conception ran down your mothers leg

[@MrRoger27]

You’re not smart enough to solve the riddle.