Chapter 38: Side-jumping

Not to mention the quality of steel, even with the help of wire cutting, without physical reference, it is simply not possible to achieve the same precision as others, and it is not even possible to have a surface.

However, the principles and drawings are well memorized.

Then, a few young people retreated to the next best, and finally retreated step by step to the structure of the current knife, and barely made a qualified and reliable knife.

Seeing that Shi Tong was having fun, Su You smiled: "The blade hasn't been processed yet, the hardness is not good, don't play bad!" ”

He took the knife, disassembled it, and said to Shi Tong: "If you want to keep the pattern from deforming, you can't forge it anymore, this blade is clamped on the vice and processed with a file." After the processing is completed, it is put into the furnace, quenched, then finely grounded, pickled out of the pattern, and finally cut the edge. And don't forget, don't forget, silver carving. ”

Thinking of the setbacks suffered by himself and the young man of the hardware factory, Su You smiled again: "I'll give you another set of drawings tomorrow, hehehe, if you can process that knife, I will give you a better design, then it will be called the best in the world!" ”

Back in the room, Su You threw himself on the drawing and began to draw.

Mechanical principles are the disciplines that specialize in the study of the structure and motion of mechanisms in machinery, as well as the structure, force, mass, and motion of machines.

The main components of this discipline are mechanics and mechanical dynamics.

The main research content is to determine the real motion law of the machine under the action of known forces and their regulation, friction and mechanical efficiency, the balance of inertial forces, etc.

Advanced folding knives, especially straight and side jumps, are actually a subtle application of mechanical principles, and there is so much knowledge involved.

At the same time, this is also very in line with one of the future theoretical programs outlined by Su You's own - fine.

The side jump folding knife is easier to do, using the two bevels of the cutter head and the back lock, forming a certain redundancy, even if there is wear and tear in the future, the two bevels can automatically continue to fit tightly, so that the blade will not shake.

However, because of the limitation of the working principle, the straight jump knife must need a certain amount of moving space for the blade to slide, so it will bring a huge drawback.

Even high-priced luxury brands cannot completely eliminate the slight shaking of the blade after the blade pops out and locks, and can only control the tolerances with extreme precision.

It was not until the famous Italian straight jump knife Deadlock came out that the world's first exquisite locking structure straight jump knife that can completely eliminate the shaking of the blade was born, which was a major breakthrough and technological innovation in the industry.

When the knife is retracted, gently push the mechanism to the head of the tool handle, and the spring generates elastic force to eject the blade, when it needs to be put away, push the mechanism backwards, the pawl changes direction, and the elastic force becomes a pulling force, and the blade can be retracted, and the effect is very magical.

After suffering a shameful failure that year, Su You has been cherishing this drawing, taking it out from time to time to look at it, and admiring the wisdom of human mechanical design.

Now, he plans to spend a week slowly drawing the drawings, because the parts are so delicate.

There are small pawls, small steel balls, small circlips, delicate bearings, springs, perfect mechanical design, power structure, locking device......

Before the micrometer came out, this jumping knife could only stay on the drawings, but it was enough to become the ultimate goal of Shi Tong's obedient disciple.

After thinking about it, I felt that the difficulty was too great, and I was afraid that it would hit the confidence of the good disciple, so I took out another drawing and drew a new one.

This one is much simpler, simpler than the side jump developed today, only a more exquisite quick-opening fin is designed on the cutter head, which is much smaller than the fast-opening fin of the first generation of imitation fat.

When the knife is put away, only a small protrusion is exposed on the handle of the knife, and with the back lock, it is a perfect folding knife.

However, to achieve the function of pulling the wind - easily push the knife into place with one hand, or throw the blade in style, it involves another small machine, ball bearings.

Even if the diameter of the bearing is up to 8 millimeters, and the ball is as small as 0.5 millimeters, it will take about 10 pieces.

Similarly, Su You did not expect Shitong to be able to make such fine balls.

Even if the four major families join forces, and even add their own research and development of jade porcelain, theoretically four cups can support tens of thousands of catties, which greatly reduces the difficulty of material production, and may not be able to create such a fine ceramic ball bearing.

But that doesn't stop him from drawing, inner rings, outer rings, retainers, balls, and it's not too simple.

Finish drawings, clap your hands, and go to sleep!

When I got up in the morning, I brought the drawings to Shi Tong and said, "Come on, come on, give you a surprise." ”

Shi Tong smiled: "Master is here, and I will also show Master a surprise." ”

After speaking, the treasure is usually presented with a short-cut knife that has been sharpened.

This is a sheathed dagger style, in which the handle is white, there are staggered fine textures on the top, the end of the handle is carved into the shape of a lotus bud, and the soft curve of the handle is embossed with lotus leaves and leaf stems, as well as delicate diamond-shaped water ripples, which not only increase the beauty, but also increase the friction.

"Damn! Ivory! ”

The knife is made of brass developed yesterday, showing the shape of water waves, and there are some hollow processes in the aquatic grass part, and a winged crane cast in a wrong silver takes up half of the area.

The scabbard is also carved from ivory as a whole, and the bottom and near the hilt are rocks on both sides, and in the middle is a diamond-shaped water wave integrated with the hilt, and a small boat is also carved on one side.

When the knife is drawn, the blade is in the shape of a short sword, and the feather veins extend straight from the hilt to the tip of the sword, splitting the short sword in two along the spine of the sword, and the pattern is evenly distributed on both sides of the short sword like a fountain gushing out from the handle.

Near the edge, a blade line with a width of only two millimeters was opened, and the entire sword body was dark, except for this circle of blade lines, which were smooth and delicate, polished into a bright mirror.

Su You grabbed Shi Tong's arm and found that this baby had been striking iron for a long time, and the cold hair on his hand had already been wiped out.

Shi Tong's mouth opened again: "The master is really an expert!" ”

After speaking, he lifted his trouser legs: "Just try!" Specially left a leg for your old man! ”

Su You was not polite, and scraped Shi Tong's leg with a short sword, and a flesh-colored skin two fingers wide shone out, and the leg hair on the top was shaved clean.

Remove the fine silk, wipe the dagger clean, and insert it into the sheath. Shi Tong also gave the short sword a beautifully decorated red sandalwood seat, with a hole on it, and the short sword could be inserted into the hole upright with a sheath.

Inserting the sword, Su You looked left and right: "Okay!" It's so beautiful! ”

Shi Tong smiled and said, "Rare Divine Soldier, but that's it, right?" I tried it with the Qingfeng Sword of Western Xia, hehehehe, it's vulnerable! ”

Su You sighed: "It can indeed be regarded as a divine soldier, but it can only be placed on the desk of the literati for them to cut paper and ink." ”

Shi Tong also sighed: "Yes, you just can't follow the general to guard the border and drink blood." ”

Both of them were speechless, and watched silently for a while, Su You suddenly thought of a question: "Why don't you give this sword to your aunt and grandmother?" ”

Shi Tong jumped up in fright: "How can it be done!" This short sword is going to sell the big head! My aunt and grandmother are only more than five years old, and they can't play with such an expensive thing. ”

Su You looked at him with disdain: "How much money did you say you spent?" ”

Shi Tong snorted, "Uh...... Not counting the cloud steel, not counting the master's ingenuity, but also brass, feather pattern cloud steel, just counting ivory and red sandalwood, almost ...... Four-through. ”

Su You asked, "How much are you going to sell?" ”

Shi Tong took out a contract from his arms: "Master, I have inquired, the Cheng family's movable type bookstore and the Shijia porcelain workshop, with your improvement, are all thirty percent of the shares." Just by virtue of the feather pattern Yungang you made, at least it is worth this amount, you signed this contract, and in the future, this Shijia iron shop will also have your thirty percent shares. ”

Su You was also polite and signed it casually.

Shi Tong smiled at this time: "Hey, hey, this sword is sold, and if it is missing, it will count me as a mallet!" In this way, Master, you can also get more than 200 pieces, and give it to your aunt and grandmother like this, it's a pity, right? ”

Su You rolled his eyes: "Just your dim sum machine, I don't bother to tease you, give people gifts, the most important thing is the heart, that folding knife was designed by my own hands, how can I exchange it with your ivory short sword?" How's that knife doing? ”

Shi Tong took out two shiny brass pieces and smiled grinningly: "It turned out to be the heart?" Then you have to assemble it yourself, Master. ”