my magic industry

Chapter 39 Gears
The production of gears is a rather difficult project in this world.

Because in this world, there is no convenient and fast gear shaping machine, not even the simplest machine tool. The processing of metal shapes can only rely on blacksmiths' sledge hammers and small hammers, or use extremely rough finished products. casting method.

With the help of self-made drawing instruments, Xia Lin quickly drew the detailed drawings of the gear box and internal gears. However, after building the kiln and the dwarves began to cast according to the drawings he provided, the finished product was completely satisfactory. Less than his use requirements.

"Master Holkin, these are white iron, hard and brittle, and there is no way to further process it into the gearbox. Is there any way for you dwarves to turn them into a kind of black malleable iron?"

After Xia Lin saw the finished gear, he was very happy to see that there was no obvious deformation in the finished product, but after hitting the edge of the gear with a small hammer, he saw iron filings crumbling down, so he could only shake his head and say goodbye Master Erjin asked.

"It turns out that what you want is black iron, not white iron. It would be better if you said no earlier. Let's deal with it later!"

Master Holguin drunkenly took a sip of the high-quality ale provided by Xialin, and soon the dwarves quickly coated the cast white iron gear with a kind of mud and grease they had prepared themselves, and put the gear on the ground again. Once in the kiln, it starts heating.

Xia Lin knew that this was high-temperature annealing of white iron, so that the carbon inside the white iron was precipitated in the form of graphite to improve the performance of the iron. Perfectly annealed white iron would turn black, and such cast iron had certain properties. Toughness, capable of rough machining.

The smelting skills of the dwarves are indeed well-deserved. After a few hours, they produced a black-heart malleable iron gear of fairly good quality. "Dangdang" sound.

This shows that the interior of this black-heart malleable iron casting has also been well annealed, and the structure is very fine.

This made him nod in satisfaction, and let the dwarf craftsman remove the burr and polish the surface of the cast iron, and then assemble a gearbox with these oiled gears that look black and shiny.

A wooden steering wheel is connected to the input shaft, and the output shaft is connected to the center shaft of a simple centrifuge from a small sugar workshop at home. The gearbox is supported above the centrifuge by a wooden frame.

Then Xia Lin asked the two dwarves to stand on the stool and try to turn the steering wheel with all their strength. During the difficult rotation, the simple centrifuge below soon started to spin, and the speed was faster than the original manual shaking. At least several times higher.

According to Xia Lin's design, this set of gearboxes with six gears has a transmission ratio of 1:16, which means that the driving shaft can rotate 16 times, which is enough to support simple carpentry. machine tool work.

"Molten Lord Pride, what have I seen today?"

Seeing this novel scene, Master Holkin immediately widened his drunken eyes, looking at the gearbox born under the hands of his own people with glowing eyes.

He had dismissed Xia Lin before, and the reason why he obeyed Xia Lin's request was that he had to bet on ten bottles of Winged Flame Dragon Blood Wine, but this gearbox made him change his mind a little.

The rotation speed is changed through a series of gears. Master Holkin knew that such a machine has many uses in processing metals after a little thought.

"Master Holkin, how about it? These things are all made by your own hands, but they have nothing to do with alchemists, but with this and the water wheel that can be made soon, we can drive the woodworking machines on the drawings working.

At that time, it takes half a day for you to drill a small hole in the iron block with a bow drill. My woodworking drilling machine can achieve the same effect as yours in a few minutes!

This is what I call the new metalworking tool, the power of the machine tool, with which you blacksmiths are truly blacksmiths! "

Seeing that the effect of the gear box was as expected, Xia Lin showed a smug smile and said to Master Holkin with joy.

"Huh! Brat, don't be complacent. I think your tool can be used for things like drilling small holes. That's not what you and I said in the bet!"

Although he was very concerned about this gearbox, in the face of Xia Lin's ridicule, Master Holguin still raised his head, and despite his short stature, he still spoke forcefully to Xia Lin.

"The machine tools I'm talking about are not limited to drilling machines. Other machine tools have to rely on Master Holkin and the dwarf masters to make them out!"

Xia Lin had already understood this stubborn dwarf master thoroughly, and he said to the ten dwarf masters brought by Master Holkin with a smile.

"No problem, you have enough good wine, much more generous than the patriarch, not to mention there are so many novelty things, I, Fann, have lived for so long, and I have never seen metal processed like this!"

Among the dwarf masters, a dwarf with bright fiery red beard and hair patted his chest and said in a thick voice.

"Bah! Fan Molten! You traitor, I have worked so hard to support you for so many years, how could you have a good life! You still call me stingy? If I had known, I would not have taken you from the slave trader Saved!"

When Master Holkin heard the dwarf's words of praising Xia Lin and slandering himself, he immediately felt betrayed, and he shouted angrily.

"Hmph, with the skill of my Molten Fire Clan, can't I be the guest of mankind without you? At most, you are just one step ahead of me!"

Fawn Molten clasped his hands on his chest, looked at Algin with disdain and said, the other dwarves were submissive, but he dared to confront Master Olkin, he seemed to be his Molten Because of the clan name.

"you!"

Master Holkin was extremely angry:
"Even if you are the priest clan of the Molten Lord, the forging skills of our Bronzebeard clan are not inferior to yours. If you don't believe me, we can compare!"

"Compare, who is afraid of whom? Over the years, which time has it not been you who lost to me?"

"That's just right, I still have a very difficult novelty that needs to be forged by everyone, why don't you two use this thing to compare who is more powerful!"

Seeing that the two dwarf masters wanted to prove that their skills were better than the other's, Xia Lin added fuel to the fire with a smile.

"What?"*2
Hearing that Xia Lin actually had something more difficult for them to forge, the two bearded and staring dwarves turned their heads and said in unison.

"Bearing!"

Xia Lin took out the drawings that had been drawn and handed them to the two dwarf masters.One sheet per person draws detailed drawings of roller bearings and ball bearings.

Bearings are an indispensable part of industry, and their existence is indispensable wherever shafts are needed.

The bearing can reduce the transmission resistance, support the rotating body, accelerate the starting speed and ensure the rotation accuracy.

If there is no bearing, firstly, the shaft body is easy to wear, and secondly, a considerable part of the power transmitted through the shaft body will be lost in the rotational wear. For example, the simple woodworking machine tool designed by Xia Lin may not achieve stable working results at all.

Among the bearings, the best effect is naturally the ball bearing, but the precision machining effect of the sphere in this world is definitely not up to Xia Lin's requirements, so he also designed the roller bearing.

As for the ball bearing, it opened the eyes of the two dwarf masters and stimulated their research motivation.

(End of this chapter)