i hate gears

Gold

Revolio Clockburg Junior?

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.

Glad to see I wasn't the only one that found that part funny.

Quagmire approves

can you send me a video link please

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.

Gear Hobber

11 year late reply but I'm trying to find this information too. I don't know how to find the information.

almost certainly. It'll make them some money apart from anything else.

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?

If you think that's satisfying, check our relaxing machinery: kzfaq.info/get/bejne/hs6Uh7qa2ZbKiX0.html

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.

My x- wife heart was 80 Rockwell, can relate!

Does this mean that in developed countries like America they are manufactured in this lengthy way

The oil is used to lubricate the cutter, extending tool life and surface finish. The oven is used to heat treat the steel, making it harder and more abrasion resistant. Overall tougher after heat treatment.

oohhh, thank you :)

Your welcome.

Dalila Dst And the rest of your questions, it always depends on the material used, or size of that gear, and in your last question, also what tool you have. So no exact answers :D

thanks .. :)

Most of these machines are not cnc. A hobbing machine is based on manual hobbing, it is basically the same thing but without a motor. The only 2 cnc machines are the lathe and the inspection machine.