Unfortunately this is not a professional repair. The speed and accuracy of the cutting of threads is impressive, particularly the internal thread. But having just repaired the half shaft on my van, which is smaller than this shaft, cutting the splines using a grinder is a big NO NO. if you can make the female part eventually fit after doing this, the shaft will probably drive on only one spline. Plus the fact that splined shafts are often hardened after being cut. This splined shaft should have been milled using a horizontal mill, and then hardened to limit wear.
the moment I saw the thumbnail, I was fearing that they would use a hand grinder to make the 'splines'. contact pattern, surface roughness, surface hadness, who cares. If the original part failed, this poor spline will fail after ten percent of operating time.
I was speechless when it came time to put the splines onto the shaft. This is after we've watched them have to hold the drill bit up to the center because it's no where near accurate. And after we've watched the entire unit want to shake itself to pieces. I have never seen someone grind custom splines onto a shaft and think these 2 parts will ever fit together. In the video you can see that 1 spline was a good 3mm and the one next to it was at best 1mm. Do people actually pay money for parts that will NEVER work?
Hola de Argentina muy bueno el trabajo y artesanal pena que no probaste la estría hembra para ver si calzaba bien de todos modos es un trabajo buenísimo felicitaciones
desde el inicio hasta el minuto 17:00 iba todo muy bien ideado..... pero de ahí en adelante toda la inteligencia se evaporó.... El estriado debió realizarse con una fresadora y un ángulo preciso en el acanalado.... ¡¡pero meterle un disco de corte es un crímen...!! -- (Vergonzoso final..... es una lástima)
As a trained machinist; Is it just me, or the parts at 0:21 look like the shaft was cut with a hacksaw, smacked with a hammer to brake two parts apart and maybe filed a bit? On the right part you can even see a kerf from a saw.
The fact that you would need to butcher the splines on the shaft to make the other part fit, and that it will only drive then on one or two splines afterwards doesn’t bother you? I would never allow a repair like this on any of my vehicles or machines!
If another shaft was unavailable I might have repaired this one rather than loose the machine that it belonged to. But cutting new splines should have been done using an indexing head and a horizontal mill with the correct cutter with the right profile to put them in the right place on the shaft stub. Doing it the way that it has been done here will lead to an inaccurate fit on the other component which will soon fail. He saved about an hour of machining, but reduced the life of the shaft and other component to around 5-10% of normal. I have just replaced the hub and half shaft on my expensive van because the cast iron hub failed. The splined half shaft also had to replaced as well because the splines were worn beyond repair. So I do have some experience of this. This was a poor repair job which in my view will soon fail again. Furthermore the stub shaft needs to be hardened afterwards to reduce wear as it is normally the expensive component. @@RASAllusion
Es satisfactorio ver como restauran una pieza con tanta dedicación y técnica felicitaciones a estos técnicos en herrajerias saludos Colombia sudamerica
@@craterbuenasfra7250 estimado amigo no me parece tan ocioso y mediocre, el dilema es que lo sacan de apuro, en vez de comprar uno nuevo, además es buen arte, buenos para criticar según mi opinión
Terrible welding, practically the root of the seam is not boiled, you need to tear your hands off for this work.About the slots that were made by eye, even more so!
