Soon, under Qin Yiming's orders, more than 100 craftsmen selected from the old camp and refugee camps with experience in iron-making were sent to the arsenal, where there were indeed too few people, which greatly affected the speed of their own armament production, and the current production conditions were so backward, if you want to increase the production speed, you must increase the number of people, this is not high-tech, it is intensive labor.

After a few days of repeated recollections, Qin Yiming finally thought of some simple and crude methods, he drew two sketches according to his memory, and then asked the blacksmith shop to build them according to his own design drawings, and he also tracked and improved the whole process.

One is a small manpower machine tool, this thing he has seen in those remote rural places before, this principle is very simple, through the manpower hand crank or foot pedal, and then connected with different sizes of gears or hemp rope, so that the screw nut of the machine tool part can obtain a high speed, and the object to be cut can be fixed firmly and let it rotate quickly. This not only increases efficiency, but also accuracy.

"How does this thing work?" Master Tian looked at the manpower machine tool, which was completely different from the drilling method of the Lu Mi Gong he had seen, which also relied on human power to drill, but using a very old hand-cranked rope, which was not only easy to deviate, but also extremely slow.

"Come up with an iron rod, and straighten it!" Qin Yiming began to demonstrate.

After everyone saw Qin Yiming put the iron rod on the big iron plate, and then clamped it with the iron pillows that could be moved on both sides, they ordered: "Da Niu, you go and step on the pedal, don't be lazy!" ”

The big bull stepped on it quickly, and it was a little unmoving at first, but it was easy to move after it moved.

The pedal of the bull's foot is connected with a rope to a big iron wheel above, this wheel should not be light, so the bull stepped on it very laboriously at the beginning, but when the iron wheel rotates, the iron wheel is connected to a large gear and rotates, the big gear is connected to a small gear, so that the big gear turns a circle, and the pinion has to rotate a lot of turns, which is equivalent to the principle of the bicycle in later generations, when the pinion rotates, the screw nut in the middle of the machine tool begins to rotate at high speed. Moreover, the screw nut can move back and forth, and when the female head comes into contact with the iron rod that has been clamped and fixed, it begins to make a piercing loud noise, and with sparks.

"Gao Ming, this tool is really powerful, so that drilling the barrel has become so simple, after the iron rod is fixed, as long as the middle is not deviated from the small drill bit, the barrel will not have problems. And only two people are needed to operate this machine, and it can be done by raw hands. Master Tian's eyes were straight as he watched from the sidelines, he never thought that chiseling the barrel of the gun could be so simple, inspired by this scene, he even had some improvement plans in his head.

The key to everything is to make a certain part of the object rotate at high speed, so that not only can the barrel be made, but also can do all kinds of things, such as neatly cutting the section, which is the weakness of the sub-gun, if the iron pipe is told to move, as long as the chisel is fixed, so that the high-speed rotating iron pipe will naturally be cut out of a neat cross-section, so that you can create a more accurate fit and higher degree of fit, so that you can greatly reduce the gap between the mother and child, improve the fit, Increase the tightness of the switch.

The most important thing is that with this machine, they can drill out a gun pipe almost a day, what a terrifying speed, that Lu Mi gun pipe, six people can only chisel three inches a day.

"It's still an adult!" Master Tian said with heartfelt emotion. Qin Yiming is still thinking about whether to do something more high-tech, this thing is too low-level, but those have to take their time, the current production conditions, whether those high-tech things can be manufactured is also a problem!

There is also an improvement is the hand-pulled bellows, this thing is simpler, it is equivalent to a human blower in general, through the hand-pulled bellows to the furnace to send oxygen, the coal in the furnace will burn more violently, so that the pig iron can be refined faster, and can even be directly refined into molten iron, refining molten iron is not a difficult thing for a single master, there is an acrobatic technique called iron flower, that is, the pig iron is melted into molten iron, in the sky, it looks as dazzling as fireworks, incomparably spectacular.

"Turning pig iron into molten iron and pouring it into a sand mold, so that the iron rod can be quickly made, and then put into this machine for processing, I think the speed of producing the barrel in this way should be greatly accelerated!" Qin Yiming said.

"Quick, it will definitely be so fast that you can't imagine it, I think more than 100 people in our arsenal can withstand more than 10,000 people in the artifact battalion, hehe!" Master Tian was intoxicated and made a gun, and he was extremely happy at this time.

At this time, Da Ming no longer has the ability to produce Lu Mi Gong, wasn't Sun Yuanhua killed? Qin Yiming doesn't remember much, but he knows that Xu Guangqi engaged in a firearms factory in Dengzhou, and many advanced firearms in the Ming Dynasty can only be produced in Dengzhou, and later Kong Youde launched the Wuqiao Mutiny, bringing the firearms experts in Dengzhou to the Tartars, which directly led to the level of Jurchens' firearms rising sharply, that is, Sun Yuanhua, a Western artillery expert in the Ming Dynasty, was also killed by Chongzhen.

As for the problem, in fact, it is easier to solve, the reason why Master Shan's ** is so powerful is mainly because he grinds the three raw materials of ** to be smaller and more uniform, this is not a technical job, it is a human work, so Qin Yiming mobilized the old people, women and children of the entire thousand households to grind ** at home, grinding until the people in the arsenal are willing to accept it, of course, this work is not free, after grinding out the qualified **, Qin Yiming will give a certain amount of food as compensation, so the military households are very happy.

bang

"Hit, hit the first shot in fifty steps!" A soldier who was inspecting the target shouted excitedly.

This is the first improved electric switch, after testing, the performance has been greatly improved, not only the accuracy has been significantly improved, can reach about 70 steps, that is, the effective shooting distance has reached 300 steps, these achievements are not only the credit of the human machine tool, to a large extent also thanks to Qin Yiming's strict requirements for ** quality, this is already very powerful, but Qin Yiming is still not very satisfied, after all, the effective shooting distance of Lu Mi Gong can reach more than 500 meters, but the electric switch gun can not be reached.

However, compared with the comprehensive performance, Qin Yiming still chose the electric switch, although the shooting distance of the switch is shorter, but it has a higher shooting speed, this advantage Qin Yiming attaches more importance to.

"My lord, our electric switch gun, within the scope of the Ming Dynasty, can only be compared to the Lu Mi gun of the artifact camp." Master Tian looked at the treasure he had made, as if he had given birth to a son, and the more he looked at it, the more he liked it.

Qin Yiming nodded, Master Tian is the most expert in the industry, and being able to give such a high evaluation is enough to show that this electric switch gun really satisfies him, Lu Mi Gong is the highest achievement of the Daming firearms, Yuan Chonghuan held Nurhachi's 100,000 army against Ning Yuan with less than 20,000 people, and it was largely due to the fact that he got a batch of excellent Lu Mi guns at that time, and the Tartars roared.

He is very confident that if he is given a year, his subordinates will be able to train at least 5,000 elite soldiers, and when the time comes, train a 1,000 firearms battalion, and replace all of them with electric switches, which must be very powerful, he is very looking forward to it, and even a little impatient to know what the effect of this electric switch will be when it is really put into actual combat.