Please rate 5 stars and subscribe if you like. How gears are made from the show How its made As an Amazon Associate I may earn a small percentage from links to Amazon.
there are much more mistakes, but this show is for non-technical people to watch, as i did 11-12 years ago as kid that got me into studying mechanical manufacturing engineering.
@alanhowitzer You can made them from wood. My Grandfathers father build windmill about 120 year ago, there was 2 gears, one with 10 tooth and another 32. Both made from hardwood. It is quite big but it works. You can shape wood by saw, axe, knife etc.
Secondary machining, like you said, is used a lot for when a powdered metal part has a mating surface to another part or needs holes drilled, threaded, or extreme tolerances. However, majority of pm parts, including gears, are finished once they are sintered. I've run a few secondary jobs through my shop in the past. I've had the great misfortune of being stuck in the tool and die end of this industry for 20 years, lol. It has paid some bills I guess, but I hate it with a passion.
@Saltaren Actually they dont use cutters to cut them again after heat treatment, they grind them. you are right though cutting them with regular inserts would destory both
You are right, thanks. I checked wikipedia and it says that steel is made by combining iron with carbon (between 0.2% and 2.1%), and that higher amounts of carbon produce an alloy called cast iron.
It was made in the exact same manner! - Except that It was made out of a different type of tool steel then heat treated afterwards to increase its hardness. If the cutters are carbide then they were ground with a stone wheel to final dimensions. :)
@alanhowitzer the machines that make the gears are CNC (computer numeric control) machines in other words programmable machines, they are or were made by hand at one point which made them expensive and so werent very common then as more CNC machines were made they too could make parts for CNC machines and other mechanical applications So what started as a purely human task requiring immense amounts of time and money is now mainly a machine based job but it costs a lot!
Sure, but a lot of the time sintered gears still require some post-production machining work, especially if the gears require extremely precise tolerances or crazy shiny surface finishes.
the video is correct, the internal was shaped could also have been broached, and the external is hobbed, but if a bigger hob was used they could have done it in one pass
They make them on a different machine, duh. But I'm not sure what makes the gears in *that* machine. ;-) I did once see a fascinating documentary, one small part of which was a little old mad-scientist-type man who was making gears with very specific numbers of teeth from sheet brass, using only tin snips, a pair of dividers, a file and a magnifier. He was incredibly skillful and wonderful to watch. I think he said it took about 15mins to make a gear that could go in a clock.
dtlssm The first gears were made with ink, compass, scribe and file. You would use the compass to scribe a circle in the ink. Cut most of the excess off, leaving a little so it’s easier to make marks on the perimeter of the circle scribe. Then you would set the angle of the compass to a smaller size, estimating based on the size of teeth you expect. Then you would walk the compass around the perimeter, scribing as you go. If the compass was set too big, then reduce the angle and try again (redo the ink so only the new scribe marks shine). Rinse and repeat until you’re satisfied that the markings are accurate enough. Then sand/file the rest of the excess off. Now you have a circular slab with markings around the circumference. At this point, you file each tooth to your satisfaction. This is a lot of work to do, and it is very difficult to get consistent teeth. That’s why you would use a shaper, like Sarvesh says above. A shaper is just a machine with a table and vice, and it has a reciprocating arm which you mount cutters on. Your are able to move the vice up and down so that you only cut a little at a time. This way, you can at least get consistent teeth, but only straight, no helical gears. Similarly, a mill can be used to cut the teeth using a vertical rotary table. Now because the original procedure of marking out the teeth being so tedious, and with limited precision (you can do pretty good, but in automotive and similar applications, really high precision is needed if you want quiet smooth meshing), people made indexers, which can be used to rotate a very specific amount. The critical part of these is an indexing plate, which you can either buy, or make using that original marking procedure. Usually a thread is used that makes the table turn once every 40 turns of the handle, or some similar number, so the precision of the original marking method is increased by that amount. Helical gears can be made by coupling the travel of the mill table (with, you guessed it, a bunch of gears) to the rotary table, so that it rotates an amount proportional to the travel of the table. This also means that the pitch of the cutter needs to be set appropriately. TL;DR People with a LOT of elbow grease and determination
dtlssm The way that they show here is the way that factories make gears. Machinists do things quite differently usually. This is because a factory needs to make thousands of the same exact part, while a machinist generally needs to make completely custom parts. So a factory can afford to spend 10 thousand dollars on a gear cutting machine that can only cut a certain type of gear, while a machinist will do things a slower and less efficient way, because they cannot afford a ten thousand dollar machine for every new order they take. A gear hobber on its own is a quite expensive piece of equipment, and it can only be used to cut a specific gear. So machinists pretty much never use them. If you’re a real DIY kind of person, you could make a basic disk shaped gear cutter (only cuts one groove at a time) without much difficulty, but professional machinists would usually just buy a set of this type of gear cutters, because you can use such a set to cut most of the gears you might need to.
Absolutely! Things of no small complexity have been made in the past and the technology lost for generations. Oftentimes the methods were deliberately hidden to prevent other nations gaining an advantage. I remember one example of the Philistines who had developed iron weaponry which was superior to softer bronze. They forbade the use of that technology in the lands they conquered in order to maintain that advantage.
Because the number of teeth on the gear and the angle at which they might have a "helical cut" is different every time. You'd have to have a sand casting and pattern for each one. It's quicker to just cut them using tools and a lathe.
@Cdabek It would be a waste of money to heat treat all gears if some of them won't met the specifications anyway. It is also because untreated metal doesn't cause as much wear on the manufacturing tools as heat treated / hardened metal.
shdw1858 Hey man. I am a sophomore who is pursuing his mechanical engineering. I am working on a project which includes manufacturing micro gear on a micro milling machine. Do you think if gears could be manufactured using milling?
Looked like some of the procedures did NOT use coolant for the tooling. Drilling the four holes for lightening, or the initial facing of the blank. I used to operate a CNC lathe. We used coolant for EVERY step. Even carbide tools appreciate coolant.
Machining is not a waste. All the metal is recycled. Sure you got to remelt the shavings but usually places with big kilns keep them going 24/7 for energy costs. If only we could recycle like this with plastics instead of sinking barges in the ocean.
I think when the world's oil supply dwindles (whether demand falls because of fusion, or environmentalists cordon it off) people will be mining landfills for plastics to recycle.
Noah Dobson Actually it's possible to ban most of the plastic in food industry. Pass the law that will force all beverage producers to use standardize glass bottles, that u can reuse. Same with bags, you can make bags out of marijuana which grows super fast, weed ropes are one of the strongest ropes.
avednamada That would be true, except that our politicians are being elected by companies who save money using plastic. Also, I doubt that hemp will be used industrially without further contributing to youth vagrancy.
To the guy attempting to begin the cycle of gears making gears. As with all machinery. The first parts/machines are made by hand. By qualified 'fitters' these parts are put together to form machines which in turn can produce other parts. Mind = blown. I am a mechanical engineer. That's how I know this.
I used to inspect gears north of seattle. Italians bought the company and chased all the gear machinists away. too bad. you cant push these people around. they will just go across the street and work if they have to. But they like making gears. I like inspecting them. they were mostly manually manufactured. no cnc. they do now though
Chickens don't eat enough calcium to justify the shell of the egg they lay. Chickens can transmute other elements into calcium for the shell. So, either iron or magnesium, etc. can be convertd to calcium inside the chicken. Particle accelerators can't do this, they claim. Do you ever see a chicken eat calcium?
Who would dislike this? It's "how gears are made", and the video shows exactly how gears are made... Some people just wanna see the world burn... :(
i hate gears
The thing people don't realize about the gear wars, is that it was never really about the gears at all
Gold
Revolio Clockburg Junior?
This show was awesome. Love narration
That got me all geared up to do something.
Great video. loving it. thanks for sharing mate.
I like your video. You have shown how gear is made in very neat and clean manner.
To correct the video at around 2:30, its titanium nitride coated, not pure titanium or regular titanium alloy.
Facing the fact, that the guy explains in the first place what gears actually are won't make it better here... That's like a video for thirdgraders
there are much more mistakes, but this show is for non-technical people to watch, as i did 11-12 years ago as kid that got me into studying mechanical manufacturing engineering.
niice give you 5 stars mutch good information come on whith more techinfo of gears and boxes
@alanhowitzer You can made them from wood. My Grandfathers father build windmill about 120 year ago, there was 2 gears, one with 10 tooth and another 32. Both made from hardwood. It is quite big but it works. You can shape wood by saw, axe, knife etc.
Secondary machining, like you said, is used a lot for when a powdered metal part has a mating surface to another part or needs holes drilled, threaded, or extreme tolerances. However, majority of pm parts, including gears, are finished once they are sintered. I've run a few secondary jobs through my shop in the past. I've had the great misfortune of being stuck in the tool and die end of this industry for 20 years, lol. It has paid some bills I guess, but I hate it with a passion.
@Saltaren Actually they dont use cutters to cut them again after heat treatment, they grind them. you are right though cutting them with regular inserts would destory both
Just found your channel and Subscribed. Very interesting. Very nice work
Well, that was pretty cool to watch...
Best gear video on the internet
that is a nice planetary gear at the end
You are right, thanks.
I checked wikipedia and it says that steel is made by combining iron with carbon (between 0.2% and 2.1%), and that higher amounts of carbon produce an alloy called cast iron.
thank you..that is really informative
This is super awesome
Thx .this was really informative
It was made in the exact same manner! - Except that It was made out of a different type of tool steel then heat treated afterwards to increase its hardness. If the cutters are carbide then they were ground with a stone wheel to final dimensions. :)
2:26 - Giggity-giggity-giggity!
Glad to see I wasn't the only one that found that part funny.
Quagmire approves
“what really grinds my gears”😂
Keeping machinery going at every turn! What an awesome comment!
Interesting video.
How are the gears that transmit power to the gear making machine made?
beautiful video
Great video
@alanhowitzer Older machines were driven by leather belts and pulley systems. some really old ones were even made of wood.
The probe is called a CMM coordinate measuring machine.
Beautiful :')
@alanhowitzer the machines that make the gears are CNC (computer numeric control) machines in other words programmable machines, they are or were made by hand at one point which made them expensive and so werent very common then as more CNC machines were made they too could make parts for CNC machines and other mechanical applications
So what started as a purely human task requiring immense amounts of time and money is now mainly a machine based job but it costs a lot!
How were the machines that make gears made? Now that must have been difficult!
knowledge full
The majority of gears nowadays are formed in a press with punches and a die. They use powdered metal for the gear material.
can you send me a video link please
Sure, but a lot of the time sintered gears still require some post-production machining work, especially if the gears require extremely precise tolerances or crazy shiny surface finishes.
totally nice
When the video started I first thought "what plugin crashed this time?"
great video
nice vedio
the video is correct, the internal was shaped could also have been broached, and the external is hobbed, but if a bigger hob was used they could have done it in one pass
COOL :D
4:43 no, the gear teeths are angled because then there is more area to transmit energy
@Cdabek how would you cut it, if it was heat treated?
They make them on a different machine, duh. But I'm not sure what makes the gears in *that* machine. ;-)
I did once see a fascinating documentary, one small part of which was a little old mad-scientist-type man who was making gears with very specific numbers of teeth from sheet brass, using only tin snips, a pair of dividers, a file and a magnifier. He was incredibly skillful and wonderful to watch. I think he said it took about 15mins to make a gear that could go in a clock.
I need my transmission gears fix or replaced, I can’t find aftermarket gears besides a bog box. Need help
At 2:26 it really gets good. Look at that thrusting.
me encantan los fierroooooooooooooooooooooooooooooooooooss!!!!
SNAAAAKE!!!
What made the gears that made these gears?
Thank you science for robots and computers!
and who made the gears of the machine that makes the gears????
Gainster I'm watching all these videos trying to figure out how to do that myself lol
Shaper or a milling machine
The egg.
dtlssm The first gears were made with ink, compass, scribe and file. You would use the compass to scribe a circle in the ink. Cut most of the excess off, leaving a little so it’s easier to make marks on the perimeter of the circle scribe. Then you would set the angle of the compass to a smaller size, estimating based on the size of teeth you expect. Then you would walk the compass around the perimeter, scribing as you go. If the compass was set too big, then reduce the angle and try again (redo the ink so only the new scribe marks shine). Rinse and repeat until you’re satisfied that the markings are accurate enough. Then sand/file the rest of the excess off. Now you have a circular slab with markings around the circumference. At this point, you file each tooth to your satisfaction.
This is a lot of work to do, and it is very difficult to get consistent teeth. That’s why you would use a shaper, like Sarvesh says above. A shaper is just a machine with a table and vice, and it has a reciprocating arm which you mount cutters on. Your are able to move the vice up and down so that you only cut a little at a time. This way, you can at least get consistent teeth, but only straight, no helical gears.
Similarly, a mill can be used to cut the teeth using a vertical rotary table. Now because the original procedure of marking out the teeth being so tedious, and with limited precision (you can do pretty good, but in automotive and similar applications, really high precision is needed if you want quiet smooth meshing), people made indexers, which can be used to rotate a very specific amount. The critical part of these is an indexing plate, which you can either buy, or make using that original marking procedure. Usually a thread is used that makes the table turn once every 40 turns of the handle, or some similar number, so the precision of the original marking method is increased by that amount.
Helical gears can be made by coupling the travel of the mill table (with, you guessed it, a bunch of gears) to the rotary table, so that it rotates an amount proportional to the travel of the table. This also means that the pitch of the cutter needs to be set appropriately.
TL;DR
People with a LOT of elbow grease and determination
dtlssm The way that they show here is the way that factories make gears. Machinists do things quite differently usually. This is because a factory needs to make thousands of the same exact part, while a machinist generally needs to make completely custom parts. So a factory can afford to spend 10 thousand dollars on a gear cutting machine that can only cut a certain type of gear, while a machinist will do things a slower and less efficient way, because they cannot afford a ten thousand dollar machine for every new order they take. A gear hobber on its own is a quite expensive piece of equipment, and it can only be used to cut a specific gear. So machinists pretty much never use them. If you’re a real DIY kind of person, you could make a basic disk shaped gear cutter (only cuts one groove at a time) without much difficulty, but professional machinists would usually just buy a set of this type of gear cutters, because you can use such a set to cut most of the gears you might need to.
@kuma982 thats just components of the cutting machine keeping cutter's up & down movement timed
On a serious note, this is pretty cool. I thought gears were just moulded or something.
wow!
The ultimate question though, what the heck made the gears that make the gears? =)
Absolutely! Things of no small complexity have been made in the past and the technology lost for generations. Oftentimes the methods were deliberately hidden to prevent other nations gaining an advantage. I remember one example of the Philistines who had developed iron weaponry which was superior to softer bronze. They forbade the use of that technology in the lands they conquered in order to maintain that advantage.
There's also milling.
Because the number of teeth on the gear and the angle at which they might have a "helical cut" is different every time. You'd have to have a sand casting and pattern for each one. It's quicker to just cut them using tools and a lathe.
Aliens man, aliens.
the amount of math involved in this... i cant even...
Ok here is my question the machine that made the gears , had gears in it , so which came first the gear or the gear making machine ?
Good
3:47 is where all the bad gears go
Man that's satisfying...
If you think that's satisfying, check our relaxing machinery: th-cam.com/video/PhdTWit0fYI/w-d-xo.html
Are all gears made this way
ya know its old when it asks you for 5 stars instead of likes/thumbs
@Cdabek It would be a waste of money to heat treat all gears if some of them won't met the specifications anyway. It is also because untreated metal doesn't cause as much wear on the manufacturing tools as heat treated / hardened metal.
What was the name of the golden gear that make gears, I couldn't undestand, and I try to listen many times
Gear Hobber
How did they make the gears on the machine if the machines are the one who are making the gears?
Nice video, i actually work on gears like this, i grind the outside diameters
shdw1858 Hey man. I am a sophomore who is pursuing his mechanical engineering. I am working on a project which includes manufacturing micro gear on a micro milling machine. Do you think if gears could be manufactured using milling?
Looked like some of the procedures did NOT use coolant for the tooling. Drilling the four holes for lightening, or the initial facing of the blank. I used to operate a CNC lathe. We used coolant for EVERY step. Even carbide tools appreciate coolant.
اشكر مقدم هذا البرنامج الرائع
Metal Gear!
i want to see how they cut the hypoid gears!
Picked up on this around 2:26
could be but then you would be best gear grinding the external tooth and then grinding the whole job to run tru
Gearception !
holy shit... and there i was, believing i would be able to make my own gears.....
Machining is not a waste. All the metal is recycled. Sure you got to remelt the shavings but usually places with big kilns keep them going 24/7 for energy costs. If only we could recycle like this with plastics instead of sinking barges in the ocean.
You could gasify the plastic with coal and turn it into truck fuel...
Noah Dobson 00
I think when the world's oil supply dwindles (whether demand falls because of fusion, or environmentalists cordon it off) people will be mining landfills for plastics to recycle.
Noah Dobson
Actually it's possible to ban most of the plastic in food industry.
Pass the law that will force all beverage producers to use standardize glass bottles, that u can reuse.
Same with bags, you can make bags out of marijuana which grows super fast, weed ropes are one of the strongest ropes.
avednamada That would be true, except that our politicians are being elected by companies who save money using plastic. Also, I doubt that hemp will be used industrially without further contributing to youth vagrancy.
how did the machines that make gears get their gears?
2:27 harlem shake machine
To the guy attempting to begin the cycle of gears making gears. As with all machinery. The first parts/machines are made by hand. By qualified 'fitters' these parts are put together to form machines which in turn can produce other parts. Mind = blown. I am a mechanical engineer. That's how I know this.
I used to inspect gears north of seattle. Italians bought the company and chased all the gear machinists away. too bad. you cant push these people around. they will just go across the street and work if they have to. But they like making gears. I like inspecting them. they were mostly manually manufactured. no cnc. they do now though
lol I was thinking that too
Endmills! But what made the endmills??
"Keeping machinery going at every turn" haha.. i see what you did there.
yeah...you should show how they made the machines that made the gears...
By using a belt powered milling machine and a rotary table.
Hen. There ya go.
@kuma982 Timing for the cutter.
😊
@tinram745 no cutting, grinding.
I do this every day :)
It's like a case of the chicken or the egg.... What made the gears which are in the gear cutter machine!??? LOL
their gears where made by hand!
Ahhhhh yes the Jumbo drill! WTF???
Buena new order
2:26 is like some robot porn lmaoo
Chickens don't eat enough calcium to justify the shell of the egg they lay. Chickens can transmute other elements into calcium for the shell. So, either iron or magnesium, etc. can be convertd to calcium inside the chicken. Particle accelerators can't do this, they claim. Do you ever see a chicken eat calcium?
10 and its great...u