It would seem a boring teaching aid. Everyone once saw something like a physics lesson.
Not. In the next thirty years, the crank mechanism, if it does not die out, will end up in the Red Book, or whatever its technicians call it. Yes, what has been said seems incredible, because the process has just begun, but it is already in full swing. And these are not only monowheels and electric buses, which we got used to surprisingly quickly. But now few people are surprised by cordless garden trimmers, which until recently did not exist. At all.
So what is proposed homemade author of Instructables under the nickname TheNick123456789 is not only a teaching-visual aid or kinetic sculpture, but also a lifetime monument to the crank mechanism. Still in vivo ...
(Actually not. Even when humanity will replace equipment with internal combustion engines with battery analogues to the maximum, crank mechanisms will remain in numerous compressors and jigsaws. You also have it in the kitchen refrigerator).
Model includes not only the crank mechanism itself, but also the cylinder and piston. For clarity, a small sector is cut from the cylinder. The wizard prints device details from the following files: cylinder, piston, crankshaft, connecting rod, piston pin.
There is a stereotype that as soon as a person acquires a 3D printer, he learns how to make homemade parts without him. Of course, this does not always happen. The master proves this by completing two parts of a wooden structure. The printer runs slowly, just at that time TheNick123456789 and manufactures them. One of the parts is the base, and in the second, perpendicular to the first, a hole for the crankshaft is drilled. Both that and another is made of a board of rectangular section 50x100 mm. Even when they were ready, printing continued, for a total of 30 hours. But now everything is ready:
The recess in the cylinder not only gives the device additional visibility, but also facilitates assembly. The master connects the cylinder to the base with a screwdriver (and again an example of a device with an electric motor powered by batteries, which we are so used to that we don’t even think about).
Adds a second wooden part with an opening for the crankshaft perpendicular to the first:
It connects the crankshaft, connecting rod, piston pin and piston. Then collects the design:
The proposed layout, among other things, shows that classic wood and high-tech plastic are not antagonists.If you choose which parts to make from, they will perfectly combine in one design.