Yu Hua, who was warmly invited, saw the new vertical drilling machine that Zhuang Qianding, a top mechanical expert, had worked on for more than ten days. This vertical drilling machine is 1.5 meters high, with a hole diameter ranging from 7 mm to 14 mm, and a maximum drilling depth.
Reaching 800 mm, it is mainly used for deep hole drilling.
In fact, it is not appropriate to judge this vertical drilling machine as an ordinary vertical drill, because this vertical drill incorporates the concept of a deep hole drilling machine and can perform almost the most difficult deep hole processing in the field of drilling.
From a practical point of view, deep hole processing has always been the most difficult point in the field of drilling processing. There are various reasons, mainly three points: first, high temperature, second, difficulty in chip removal, and third, the drilling axis is prone to deviation.
In order to solve the difficulty of deep hole drilling, the mechanical processing fields of various countries have developed deep hole drilling machines specially used for deep hole processing, and even highly professional gun drilling machine tools.
Whether it is a deep hole drilling machine or a gun drilling machine tool, they are high-end mechanical processing equipment that is highly controlled by various countries and will never be easily sold outside.
The deep hole processing solution based on lathes proposed by Yu Hua allowed Professor Zhuang to write three papers precisely because it solved the problem of deep hole processing to a certain extent.
Although a lathe is not as good as a professional drilling machine, it is much better than having nothing to do.
The biggest highlight of Professor Zhuang's new vertical drill is that it integrates the concept of deep hole drilling machines and adapts measures to local conditions to meet the needs of deep hole processing to the greatest extent.
What are the advantages of vertical drilling?
The axes are consistent, and the positioning accuracy and processing accuracy are high.
After integrating the concept of deep hole drilling machine, this vertical drill transformed into a high-precision vertical deep hole drilling machine.
Since it was just born, welding marks like fish scales can still be seen on the columns and various structures of the entire drilling machine.
Yu Hua looked at the silver-white drilling machine that was still in a metal structure. He was filled with admiration and shock. This new vertical deep-hole drilling machine was really awesome.
Its function and significance is to solve the most important barrel processing in firearms manufacturing and improve processing efficiency.
It is only designed for efficient drilling of gun barrels and is extremely professional.
Simple and practical, it contains unique mechanical beauty and embodies the blood of independent manufacturing.
This is made in china in 1937.
"Professor Zhuang, I think this new vertical drilling machine should be renamed a vertical deep hole drilling machine. I think it has only one thing to do, which is to process the gun barrel with maximum efficiency." Yu Hua fully understood the relevant parameters of the entire drilling machine.
, said towards Professor Zhuang, expressing his praise and admiration, and giving his personal opinions from the heart.
"Vertical deep hole drilling machine...this name is really good." Zhuang Qianding heard this, thought about it, and nodded in agreement.
Yu Hua asked: "Professor Zhuang, what is the processing efficiency of this vertical deep hole drill on gun barrel blanks?"
"If it is a medium-sized rifle, a single machine can process more than thirty-five barrels per day. If it is a skilled worker, it can process up to fifty barrels per day. It is an order of magnitude more efficient than the barrel processing equipment of the Gongxian Arsenal. It only takes two
One vertical deep hole drill can equal the gun barrel output of the Gongxian Arsenal in one month."
Professor Zhuang smiled and gave the processing efficiency data, pointing to a pile of processed gun barrel blanks next to him: "I have tested this data, and it is basically consistent."
Fifty sticks a day!
A single piece of equipment can produce up to 1,500 pieces per month. This is the processing efficiency of a professional deep hole drilling machine.
What is the concept of this data?
Gongxian Arsenal introduced hundreds of foreign machines and equipment just to increase weapons production. Among them, the Chinese rifle production line attracted the most attention.
However, the monthly output of formal rifles was not optimistic. Putting aside the variable factors of arsenal management corruption and workers' unfamiliar skills, in terms of production efficiency alone, the average monthly output in 1935 was about 1,800 units, and the average monthly output in 1937 was 2,500 units.
In two years, the improvement in production efficiency was pitifully low.
There are many reasons for this, but one main reason is the low processing efficiency of machinery and equipment.
As an expert who has visited the Gong County Arsenal, Zhuang Qianding is very aware of the opponent's barrel processing efficiency. With dozens of mechanical equipment and hundreds of workers in the entire workshop, the output of barrels is only about 80 barrels per day.
On one side, a single machine can produce 50 pieces per day, and on the other side, the entire workshop can produce 80 pieces per day. This is the productivity change brought about by technology.
"Awesome..." Yu Hua secretly smacked his tongue when he heard it. Although he was prepared in his heart, he was still restrained.
Fifty barrels per unit. If ten units of this new vertical deep hole drilling machine are put into use, a full 500 gun barrels can be processed every day, with a monthly output of up to 15,000.
The figure of 15,000 may not be a big deal to the major industrial countries in the world, but to China today, it is really like an astronomical figure that is unimaginable.
The combined monthly output of Taiyuan, Hanyang, and Gongxian, the three major domestic arsenals, cannot reach the level of ten vertical deep hole drills.
So scary!
However, there is one thing to note. Barrel processing is divided into drilling and rifling.
The barrel blank that has been drilled is not a barrel in the true sense. It must be processed to have rifling before it can be considered a barrel in the true sense.
"After I went back that day, I was writing my thesis and thinking about how to improve the efficiency of deep hole processing. Although the lathe processing plan you gave is very good, it is still somewhat lacking in efficiency. Finally, I built this vertical deep hole machine.
Drill, Yu Hua, its birth is partially due to you." Zhuang Qianding looked at the vertical deep hole drill in front of him, which was renamed after its birth, with a fatherly face and said with a smile.
"I don't have the ability, Professor Zhuang, what are you going to do next?" Yu Hua shook his head and looked at the vertical deep hole drill containing advanced technology. In a few days, it will be July, and then the Marco Polo Bridge Incident will break out.
, if this vertical deep hole drill falls into the hands of the Japanese...
The consequences cannot be assessed.
Yu Hua didn't know the technical level and craftsmanship of the Japanese manufacturing industry. It would be nice if the Japanese manufacturing industry had such a professional and high-efficiency deep hole drilling machine, but if not, it would be a lot of fun.
One thousand vertical deep hole drills can process up to 35,000-50,000 deep hole barrels per day, with a theoretical annual output of 12 million to 18 million barrels.
Even if it is impossible for the Japanese to devote all their limited steel production and metal resources to rifle production, even if the actual production is reduced to a quarter, that would be terrifying enough.
What is the total output of Type 38 rifles?
In forty years, there were only more than three million, with an average annual output of 75,000.
With data, we can understand how efficient the vertical deep hole drill developed by Professor Zhuang is.
This is almost a dimensionality reduction blow in the field of mechanical deep hole processing in 1937.
"How to do it? I don't know... I was originally going to tell the Gongxian Arsenal the news, but I'm afraid that after the news gets out, the Japanese will know it immediately." Professor Zhuang Qianding shook his head slightly and sighed.