Chapter 673: The advent of the city defense crossbow
According to Zhuang Mengdie’s idea, they don’t need a fixed platform at all. The city defense crossbow only requires two to three soldiers to operate together. Wherever they want to go While launching an attack, you can just carry the city defense crossbow to the top of the wall.
Not only does it solve the problem of flexibility, it can even reduce some of the wall space that would otherwise be occupied by city defense crossbows.
After that, regardless of the soldiers patrolling the wall, the two of them spread out the animal skin drawings and started drawing with charcoal pencils.
Although this idea was originally proposed by Zhuang Mengdie, as a time traveler, Zhou Xu was able to come up with many useful ideas after having such an idea. In a few words, This can enrich Zhuang Mengdie's thoughts and make Zhuang Mengdie regard him as a god.
However, Zhou Xu couldn't help but feel a little ashamed when he felt Zhuang Mengdie's gaze.
His advantage is that he is a modern person who has withstood the impact of huge network information. Compared with him, Zhuang Meng can think out of the box and create something from scratch with his own mind. Die is obviously more talented.
After going back and forth, the two of them went directly to the wall of Huangsha City to finalize the latest version of the city defense crossbow design.
If you want to make changes in the future, you can only wait for the actual product to be made, see if there are any problems during the specific use process, and then make targeted adjustments and improvements.
“Then let’s make the first version of the city defense crossbow and test it.”
They basically brought the tools and materials they needed themselves, and there were also many materials and equipment in Huangsha City for them to use at will.
The work started quickly. Although the specific positioning of the city defense crossbow and the three-bow bed crossbow has completely changed, but leaving this issue aside, many parts of the city defense crossbow are actually reductions of the three-bow bed crossbow. Version, these parts can be easily handled by a few assistants brought over by Zhuang Mengdie.
As for Zhuang Mengdie himself, he concentrated on producing the core components.
Disregarding the previous bearing design that has become obsolete, in order to improve stability and durability, the core structure of the bed crossbow is also made of metal, and this city anti-crossbow is naturally no exception.
As for this core component, only Zhuang Mengdie can do it for the entire week.
"Deputy Minister, the parts are all cast."
"Okay, thank you for your hard work."
While speaking, Zhuang Mengdie glanced at the plates where the parts were placed one by one, and used The iron tongs picked up one of them and placed it directly into the hot forge.
After the metal parts were burned red, he pinched them out, then waved the small hammer in his hand slightly, which was no bigger than a palm, and started beating it.
At this time, Zhuang Mengdie was in a state of complete concentration, completely ignoring the existence of other people around him.
One of the accompanying members was stunned as he watched Zhuang Mengdie knocking on the parts.
"Brother Li, what the deputy minister is making now should be the core component, right? Just did it directly in front of us? Don't you need to avoid it or something?"
"No. Needed. "
The man called Brother Li glanced over there.
“The structure of the core components is not a secret. The real difficulty lies in the production craftsmanship and control of precision.”
While speaking, Brother Li threw a piece of wood in his hand to the member.
"Stop talking, don't stop doing what you are doing."
"Oh, oh."
The accompanying member quickly got busy while responding.
After seeing it, Brother Li continued to talk. "Parts simply cast with molds are very brittle and not strong enough, so they can easily break. In order to increase the strength, they must be repeatedly forged. You should know this, right?"
The accompanying members nodded quickly.
"I know."
It is a common sense question to enter the Ordnance and Equipment Department, and Brother Li continued...
"In When the mold is cast, the size of the parts can be unified, but during the forging process, as the strength of the parts increases, the thickness, width and other dimensional data of each part will also change accordingly. ”
When Brother Li said this, the accompanying member vaguely knew what the problem was.
“So taking this into account, our molds are usually appropriately larger, just to reserve a certain size for subsequent forging.”
“Under this premise , there are a total of twenty-seven parts that are combined into a core component. If one of these parts is not forged in place and cannot fit tightly, it will affect the stability and durability of the entire finished product, as well as the internal structure. Normal operation."
At this point, Brother Li paused, and then looked at the accompanying member with a half-smile, whose expression was gradually becoming confused.
“That is to say, when you are forging it purely by hand, you must ensure that the sizes of the twenty-seven parts are completely matched and that they can be assembled together perfectly.”
"So far, the only one who can improve the accuracy of this craft to this level is the Deputy Minister. If you can do it, the Deputy Minister will definitely be very happy. After all, someone will be able to help her. Let’s divide the work.”
After hearing what Brother Li said, the accompanying member felt abnormal when faced with such precision requirements.
But then, another trick came up.
"Brother Li, what do you think of the method of directly filling the seams with water when it is impossible to achieve a tight seal?"
What this accompanying member means is to burn the seams. The copper or iron juice is poured into the gaps to fill them. In this way, the entire structure is made to fit tightly.
When Brother Li heard this, he rolled his eyes subconsciously and felt speechless in his heart.
But when he thought about it, he realized that this accompanying member was just here to help them and was not a formal technician, so he felt relieved again.
After all, the other party is just a handyman, so it’s normal to not understand this.
“This core component is not just as simple as putting together twenty-seven parts. As I said just now, there is a mechanical structure and internal linkage. Once the juice is poured, there will be It may make an entire core component useless.”
“At the same time, such a delicate mechanism needs to be disassembled at regular intervals and maintained on every internal part to ensure that it remains in place. When used, it can show enough sensitivity and smoothness. How to maintain it after pouring juice? ”
Brother Li's words completely gave up on the entourage.
When he came to the Ordnance and Equipment Department, of course he didn’t just want to be a handyman, but if he wanted to get ahead, he was obviously still far away.
Disregarding this small episode, a period of time passed, and an ingenious mechanism component was quickly assembled in Zhuang Mengdie's hands.
Every piece fits tightly and perfectly, and the super precision brought by those skillful hands is simply amazing.
The manufacturing of core components can be said to be the most time-consuming, and other components have already been prepared and waiting.
The final assembly work was completed quickly, and their first city defense crossbow was officially launched at this moment!
(End of this chapter)