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Grinding a tool with chipbreaker is important swarf is potentially dangerous for the machinist and potentially ruin a tool ..live centre would also go a long way.If one of my apprentices had chucked precision freshly machined component on the floor he might need to see protoligist.
That made me laugh too! WTF!? I machined parts most of my life. Mostly in ceramic so yeah, we were not dropping anything. It's because it's hot I'm assuming. It looks like they're using mild steel for gears.
These are hacks not experts. I can't believe they are throwing parts on cement like that. They either don't know how or don't have the ability to measure pitch diameter on helical gears. These gears won't last long either; gears need to be rough cut, hardened, then ground to their finished dimensions. It's also a good idea to print gears in an assembly to verify proper alignment.
Hi, I just machined this bar stock to put on the gear hob, let me chuck it on the floor. Hi, I just cut the teeth on this part, let me chuck it on the ground. I just don't understand why.
A completely standard bit of machining, which any competent machinist can do. We used to have 1000's of them in the Uk until our government decided we didn't need to make things anymore. The complete lack of precision measuring tools is amazing, and those gears will need to be hardened and tempered and then finish grinding before use, otherwise, it is complete crap.
As a machinist I must say, this sh*t is painful to watch. The machines are as abused as the people using them, the material is mild steel, concentricity is about ten thou TIR and that tooth profile is BULLSHIT. When the center to center dimensions weren't right he just put that piece of crap back in and fed the cutter further in...I wouldn't pay ten cents for it...it's just going to kill its mate. Maybe he made that too...
I love the rough eyeballing with vernier calipers and also the happy little string chip as well as stopping the lathe with tool still engaged in the cut :D :D
The swiftly wipes it down with a rag as if that little bit of oil residue is an issue compared to the big ass dents in the part from throwing it on the ground from 5 feet
There is definitely something wrong with that gear. I can not count the exact number of teeth but there are surely more than 17 so teeth ends must not be that sharp (gears with less than 17 teeth must be corrected in order to avoid undercutting). They made the wrong pitch diameter so he simply did another pass to "fit it" and ruined the gear by undercutting the teeth. Not to mention the throwing the finished piece on the floor....
They must have terrible accidents, the sandals, swarf, over extended machining the list goes on but they seem to get there and has been said below how long the parts will last. I recall going back 50 years when the UK was giving up Engineering all the kit that got us through the second world war was shipped out to India in ship loads and it's got them to where they are today and tomorrow they will eventually get to where we are today so respect there. Also respect to our fathers who made that kit and it's still running.
Congratulations on having the only three jaw chuck in all of Pakistan! Now how about live centers? BTW, are they Munchkins, Ewoks or Alvin and the Chipmunks?
Also one of the few shops to have a mill. All of the other videos I've seen have been lathes and maybe a drill press. The real shocker was the gear hob. I saw a video where they "repaired" a rear end pinion gear by welding it up and hand grinding the teeth.
Those string chips are giving me flashbacks. I got 23 stitches in my left arm and cut all the tendons early one Monday morning in 1991 from a scene like that.
I would never understand how the mind of this people works. They're extremely skillful at what they do, but their lack of safety gear and measures is baffling. Also they're utter reckless in the way they make stuff, like this guy throwing the machined part to the floor! Almost gave me a heart attack!
It's amazing the difference between the work environments in this country and the developed countries. The dirty, unorganized shops are just shocking to me.
no coolant and low feed rate/ shallow depth of cut. He's using a very sketchy lathe; I bet the spindle bearings are shot. It sucks but with a low rigidity setup with no coolant that's what you get. He's also hand grinding his tools, he may be able to get chips with a negative rake but I doubt they would be figure 9's.
If we want to chuck a round bar on a mill it is easier to install a lathe chuck on the mill so it is rigid and secure not just holding this bar from only two points ,. thank you youtube
Более менее адекватная мастерская, ну почему то и тут заготовку кидают на бетонный пол 😭 Интересно как угол наклона винтовой канавки высчитали? И как долго будет работать сырой вал шестерня? Или потом предстоит термообработка и шлифовка посадочных? Хотя я в этом сомневаюсь.
Видел я термообработку по-пакистански. Сидит мужик с горелкой, и зубья на шестерне отжигает). Цвета побежалости при такой "термообработке" красивые, жаль только толку от нее нет.
Кидают на пол потому что горячая. Она железная, нихрена ей не будет))) Угол наклона определили по ведомой шестерне, очевидно же. Любой нормальный фрезеровщик или зуборезчик умеет расчитывать это все, на это существуют стандарты, справочники. Либо уже на опыте знает. Термообработка и шлифовка будет 100%, иначе вся работа бесполезна.
@@Quark15616 Расскажите пожалуйста мне как транспортиром померить угол канавки? Чтобы при этом не ошибиться на градус другой,каких либо единых стандартов нет. Книжку видели с таблицами подбора гитары? Триста страниц одних цифр. А то человек первый раз деталь из станка вынимает,взял бы тряпочку) Хотя с чего бы ей быть сильно горячей,резалось с СОЖ. Забить зуб ударом о бетон как нефиг делать,но на такие мелочи восточные мастера внимания не обращают . Никто не будет заниматься зубошлифованием,не порите чушь. Да и посадки там шлифовать не принято . И да,зуборез у меня есть)знаю о чём говорю.
10:02 когда шпоночный паз делал, там вал лежал такой же с отломанным хвостовиком.Это как?When the keyway was made, there was also a shaft with a broken shank.How is that?
Я видел как с легкостью отрывает хвостовики на редукторах грузовиков, сворачивает карданный вал, слизывает шестерни, ломает полуоси. Заклинило на ходу под грузом - и привет.
@@Quark15616 в одном видео мост порвало, на нем вытенвло фермы т.к закалку и отпуск неделали видно, а рессоры в а..е от увиденного стоит с доп.пластинами над ней ещё одна т.е рессоранадрессорой
Культура производства, как всегда, на высоте. А в гарантийном отделе, наверное, сидят моджахеды с автоматами. Ничем иным объяснить то, что эти ребята клеят бирку на деталь без термообработки я не могу.
Throw it on the floor a few more times to harden the metal. /s Looks like mild steel. No heat treatment, no finish grinding, eye ball measurements. I don't think that's going to last very long.
Я паз на торці робив би одразу після шпоночного, не виймаючи з тисків, дисковою фрезою. А взагалі культура виробництва дуже низька. Лише кидання виробу на підлогу чого варто.
The guy doesn't have a compressor air gun, he basically has a blow gun end piece to blow away metal shavings, he's gonna run out of air by midday, that he's going to pass out, hitting his face onto the helical splines, before hitting the floor.
