I'm really just the village head

Chapter 34 It is difficult for carpenters to understand "Mechanical Drawing"

From then on things got easier.

I don't know how good Liu Baye was at the time, but Zhang Changgui in front of him is no problem.

"Shall we go tomorrow? There are more than 20 sets. It takes a lot of time, especially since you don't have many tools..." When Zhang Changgui returned to his rented house, he was tired and sleepy, with a look of eagerness.

The house Zhang Changgui rented is a run-down farmyard.

It was in Hongya Cave, a famous mountain city of later generations, near the Jiefangbei, and there are still many stilts.

The rent is 6 yuan a month.

It doesn't look like much, but it is very expensive.

There are only three thatched houses that are about to collapse, and the sky can be seen through the roof holes at night.

The only advantage is to bring a yard of forty to fifty square meters.

The yard is full of shavings and sawdust, and there is not much intact wood.

In the middle, two wooden horses are placed with a thick long plank.

Carpenters these days have only a handful of tools and no machinery or equipment.

When Zhang Changgui came back, he put away his saws, tool planes, chisels and other eating guys, and put everything on his back.

There was excitement on his face.

"We can't leave tomorrow. We need to wait here for a few days and wait for the ship to come..." Liu Chunlai organized the language.

He knew that Zhang Changgui was so anxious to see Baye Liu.

"You can wait here and there is nothing to do." Zhang Changgui was a little lost.

I thought I would see Baye Liu soon.

"Why can it be all right? We have to draw the drawings for these furniture. Not only the complete drawings, but also each part, it is better to draw and indicate the size. This way, it will be easier to process. And some parts, I also need to buy it." Liu Chunlai had an idea long ago.

You can't let each of these carpenters take a few apprentices to finish one set from beginning to end before continuing.

Specialization and streamlining can complete the follow-up.

Only with drawings can streamline operations be realized.

"Can this be guaranteed to be completed within one month?" Zhang Changgui was a little unbelievable.

Liu Chunlai did not explain.

Early the next morning, Liu Chunlai ran to the department store to buy drawings and pencils.

As long as the drawings are completed, after returning, let other carpenters take their apprentices and process them according to the drawings.

Master carpenters can act as technicians, controlling quality and size.

"You two, go around and find a place, whether it's a facade or a street-facing house, at the right price, rent it out, preferably you can buy it." Liu Chunlai called Liu Jiuwa and Liu Zhiqiang over and asked them to find a place. "In the future, when we get here, we will have a fixed foothold."

Although the two were worried, Liu Chunlai had to get the drawings out with Zhang Changgui. Without any experience, they could only grit their teeth and bite the bullet.

"Master, did we really go with them? Isn't it good to be in the city? Just set up a factory here and recruit people. According to what he said, a set of furniture will be produced in a few days. "

While Liu Chun came to confess the two Liu Jiuwa, Li Hongbing approached Zhang Changgui.

Yesterday I was tired for a day and walked so far, but I did not fall asleep when I came back.

His eyes were bloodshot.

"If you don't want to go, just stay." Zhang Changgui was drawing according to Liu Chunlai's request, and ignored his apprentice.

The carpenter's handiwork, but he has to draw with a pencil, especially some structural positions, he really doesn't know how to express it.

The apprentice is not sensible at all.

"Or, let the top two stay here with me?" Li Hongbing didn't give up, "he didn't want to go, they are all bachelors, go, after the top two..."

"Don't fight him!" Zhang Changgui raised his head and stared at Li Hongbing with a sharp look on his face.

Li Hongbing suddenly said nothing.

"Second strong, come, follow me to draw pictures..." Zhang Changgui called out Zhang Erqiang, who was looking at this side.

When Liu Chun came in, he happened to see this scene.

Li Hongbing looked at him with an unfriendly attitude.

"What's wrong?"

"It's nothing." Zhang Changgui didn't answer, "You can tell me how to draw. When my father taught me before, he only drew the assembly drawings you said, and wrote down everything else..."

"Assembly diagram, let's use three views, such as the big wardrobe, from the front, what it looks like, draw it, and then mark the length, width, width of the middle cabinet, etc..."

Liu Chunlai took the pencil and drew a rectangle easily, and then drew a few more strokes, and a simple outline drawing of the wardrobe came out.

"The invisible parts are directly represented by dotted lines, and you can see the details in other views..."

"Left view, which means looking over from the left..."

"Then the top view, from top to bottom..."

"In this way, all the dimensions of the shape are determined."

Liu Chunlai pointed to the three simplified views on the drawing, which were three different rectangles, but they showed the general parts of the wardrobe.

Zhang Changgui can see clearly that these three simple pictures can indeed express the general situation of the large wardrobe.

"What about the drawers in the closet? What's the use of marking numbers?" Zhang Changgui found that the drawers of the large closet were not expressed at all.

Liu Chunlai grinned and pulled out another drawing, "So, this requires a part drawing."

Zhang Changgui understood what he meant.

I thought, this is really good, as long as the drawing is clear, apprentices who have not yet made an apprentice can follow the drawing.

When Liu Chun came to see him understand, he was relieved.

"Mechanical Drawing" seems very simple, all kinds of geometric projections, in mathematics classes, from elementary school geometric figures to junior high school trigonometric functions are the basis.

But it is difficult for people who have not studied the system to understand.

It requires a strong spatial imagination. When you see the graphics on the drawings, you will automatically come to mind what it is like.

Fortunately, Zhang Changgui can understand and master it quickly.

"The dimensions above will be marked with a tolerance, for example, what is the maximum length and the shortest..." Liu Chun said, and Zhang Changgui began to mark.

Seeing the size he wrote, Liu Chunlai hurriedly stopped.

"Didn't you say the longest and the shortest?" Zhang Changgui was a little confused.

Zhang Erqiang was next to him, and his face was even more confused, his father was fine.

"For example, the width of this large wardrobe is 1.8 meters, which can be 1 or 2 millimeters shorter. Let's write one meter eight here and mark it in parentheses. For example, ?0.02 means it can be 2 mm long; -0.02 means two millimeters shorter. ..."

"How much is two millimeters?" Zhang Erqiang asked in confusion.

Liu Chunlai was dumbfounded.

But the puzzled expressions on the faces of the two carpenters of the Zhang family and his son were not like joking.

"Yes, we usually use a few feet and inches to say, not meters..." Zhang Changgui reminded Liu Chunlai.

At this moment, Liu Chun came to understand where the problem was.

It is true that the national standard has not been popularized this year. Except for technicians in state-owned units using metric units, most of the folk artists who follow Master to learn crafts use the original old units.

Forcibly promote the national standard?

That is to find something for myself.

"One inch is 33.3 millimeters. This 2 millimeters is about..." Liu Chunlai began to convert the unit.

He is not accustomed to using domestic municipal units that have been used for thousands of years, but conversion is not easy.

"6%?" Zhang Erqiang asked Liu Chunlai uncertainly.

"Yes, it's almost 6%!" Liu Chunlai made a calculation, and it seemed to be the same?

"It's too small to make furniture, or it's so precise..." Zhang Changgui complained.

Liu Chunlai looked at the father and son and patted his forehead, "This is just an example, you are the master!"

"It's better to write the longest and shortest on it, so that you can see it clearly. If you do this, it is easy to make a mistake, and then it will be wasted." Zhang Erqiang seriously reminded Liu Chunlai.

Zhang Changgui also felt that this was too troublesome.

"Okay, how convenient do you find it, how easy it is..." Liu Chunlai gave up the idea of ​​letting them make standard drawings.

For the masters who have never studied "Mechanical Drawing", the standardized labeling makes them feel that they are not standard.

When you have the opportunity in the future, find two technicians who know mechanical drawing from the bankrupt units to do this.

Seeing that Liu Chunlai was not blindly commanding, the father and son continued to draw with satisfaction.

Liu Chunlai can't help much here. He doesn't know how to work in woodworking. Thinking about the expression Li Hongbing looked at him before, maybe he should talk to him?

Li Hongbing is not suitable for taking away.

From yesterday’s performance, several times I wanted to persuade Zhang Changgui to do it himself.

Once such a person is brought back, it is completely a time bomb.

Perhaps, he can use him to help do some things that the villagers can't do in advance.

When he came out, Li Hongbing was sitting on the stone steps outside the house, staring at the various boats on the river not far away, thinking about his thoughts.

"Go down here, all the way, you can go to the Shanghai stock market, and then go outside, it is the Pacific Ocean..." Liu Chunlai sat next to Li Hongbing, took out a cigarette, and handed him one.