The Rise of Heavy Industry 1980

Zhang Miaomiao didn't know what "stress concentration" was, in fact, this term was a common term in computer-aided design, and only the simplest mathematical model was used to check the strength and hardness of the shaft in the era of pure manual design.

Wang Chaoyang came prepared this time, holding two wooden sticks in his hands, one thick and one thin, and the thick one sawed out a circular groove in the middle, and the diameter of the connecting position was as thick as the thin wooden stick.

According to the simple check formula, the strength of the two shafts should be the same, which is also Zhang Miaomiao's idea. Wang Chaoyang didn't explain too much, just asked her to try to break the two wooden sticks.

Zhang Miaomiao did not reject this suggestion.

And when she couldn't break the thin wooden stick with all her strength and easily broke the thick wooden stick, Zhang Miaomiao stayed where she was. This kind of problem that has already happened, but cannot be explained with existing knowledge, makes her almost crazy, why is the strength of two wooden sticks of the same material and effective diameter, so much difference?"

Wang Chaoyang said: "The uneven thickness will lead to an increase in the force on the root of the shaft shoulder, and the fracture of the entire shaft will be caused by local crushing.

As

a technician, she naturally knew the failure mode of crushing, but it was generally only considered in the shaft hole fit, like this kind of shaft structure itself, she had never considered it in this way, and even the teacher who gave her a lecture had never said it. However, none of that mattered, the important thing was that Wang Chaoyang's words were very reasonable, and the wooden stick that she easily broke was the best proof.

Zhang Miaomiao's eyes changed when she looked at Wang Chaoyang.

She never thought that there would be people in a place like the Red Star Machinery Factory who were so proficient in structure.

And at this moment, she realized that this time, from the beginning of the meeting, to the suggestion that she use a wooden stick for verification, to the final explanation, Wang Chaoyang's demeanor was so calm, and those professional words of mechanics came out of Wang Chaoyang's mouth, and it was as ...... as an adult explaining to a child why the water freezes and why the sun goes down

Now Zhang Miaomiao finally understands why Wang Chaoyang's words keep circling in her mind, it is precisely because of this kind of expression, this kind of look that seems to be ordinary but can tell the truth in one word, and cannot be questioned! This kind of look, Zhang

Miaomiao has never even seen from the face of a teacher in a provincial school.

Is this really the look that a boy in his twenties should have?

"You ......" Zhang Miaomiao opened her mouth, but she didn't know what to say.

"If you have time, you might as well hurry up and change the drawing, your shaft will be mass-produced soon. Wang Chaoyang said.

"Oh okay!" Zhang Miaomiao hurriedly ran to the office.

"Don't leave the drawings behind. "

Oh good!" Zhang Miaomiao came back to get the drawings.

"If you want to change the map, it's best to tell the factory director in advance.

"Oh yes!"

On the way to the factory director's office, the more Zhang Miaomiao thought about it, the more wrong it became.

As a technician invited from the province by the Red Star Machinery Factory, Zhang Miaomiao is a rare intellectual woman in this era, and she is full of self-confidence and pride in her bones...... But how could this kind of self-confidence and pride disappear in front of Wang Chaoyang?

"I am the designer of this shaft, and I must not be at the mercy of others!" Zhang Miaomiao came to Wang Song's office while doing mental construction, and said that the shaft needed to be optimized, Wang Song was very worried at first, and was relieved after learning that Zhang Miaomiao already had an optimization plan.

However, considering the processing capacity and delivery time of the Red Star Factory, Wang Song still hoped that Zhang Miaomiao could complete the optimization within two days, and Zhang Miaomiao agreed to this deadline.

Back in his office, Zhang Miaomiao immediately began to optimize the design of the shaft, focusing on the processing of the position of the shaft shoulder, the specific fillet value needs to be calculated to obtain, and then the drawing is changed, there is no computer in this era, there is no computer aid, the calculation is purely by hand, the drawing is also purely by hand, these workloads are very tight for two days, but Zhang Miaomiao does not want to take extra time.

She's just going to compete, even though she doesn't know who she's fighting against.

Wang Chaoyang has been wandering around the factory in the past few days, and has a basic understanding of the processing equipment of the Red Star Machinery Factory. The main equipment is three planers, five lathes and one milling machine, and some auxiliary equipment as a supporting field, of which more than ninety percent of the equipment is older than Wang Chaoyang's age, and due to the lack of care and maintenance, more than half of the equipment is on the verge of scrapping.

This processing capacity is really worrying. To put it bluntly, the processing capacity of any machining center that appeared in later generations exceeded ten times that of Red Star.

When Wang Chaoyang was about to leave the workshop, he suddenly heard Wang Song's scolding, and the corners of his eyes twitched unnaturally...... But then I heard that Wang Song scolded not himself, but five workshop workers.

It turned out that when Wang Song was planning the production plan of 1,500 shafts, he encountered the trouble of insufficient productivity. There are a total of five lathe masters in the factory, and each person must complete 10 axles a day, which means that each person has to work more than 15 hours a day! Excluding meal time, each person can sleep five or six hours a day.

Wang Song felt that this was nothing, a month of gritting his teeth would soon pass, and this batch of orders must be won. But the workers don't think so, 15 hours is too long...... Their salary is only 30 yuan a month.

"Look at you bear-like! When Lao Tzu was a soldier, he slept two hours a day, and he still didn't win the battle? So it's decided, whoever dares to chirp crookedly, get out of Lao Tzu immediately!"

Wang Song's fiery temper came up, that was the same, and the last five masters could only leave dejectedly.

Wang Chaoyang has understood the matter, but he can't figure out why it takes 15 hours per person for 10 shafts, he has learned about the equipment in the workshop, and the efficiency is not to this point.

So Wang Chaoyang stepped forward, intending to ask clearly. As a result, Wang Song was angry, and when he saw Wang Chaoyang, he glared directly: "What are you kid shaking? Beware of me beating you!" Wang

Chaoyang said with a dark face: "Dad, can you say something well, it is not easy for workers and masters."

Wang Song said: "You know a fart, when Lao Tzu was a company commander, what kind of veteran oil was subdued, I don't believe that they can still turn the sky upside down!" Wang

Chaoyang continued to say with a black face: "The key is not whether you can subdue them, but I don't understand that 10 shafts take 15 hours, and it takes an hour and a half to calculate a shaft

?" Wang Song sighed and said at this time: " This batch of shafts is too complicated, too difficult to process, an hour and a half has to be said to be a veteran, if you kid three hours can't get it done!" This

new branch father will teach himself a lesson every time he speaks, and Wang Chaoyang has slowly Xi it. But he still reminded: "Dad, Zhang Miaomiao is changing the drawings, you know?"