Yang Chunshan emphasized in front of Lin Zhenhua that "half a son" is such a thing, and Lin Zhenhua can naturally understand it. He said he had been working hard, and it wasn't entirely perfunctory. Not to mention anything else, let's just say that now, Lin Zhenhua is racking his brains to design a copycat version of the gear hobbing machine for Yang Xin, so as to liberate Yang Xin from the heavy work like a mountain.

Since Lin Zhenhua taught Yang Xin to use the indexing head, it is difficult for Yang Xin to work like processing gears. But as the old saying goes, blessing is good, disaster depends, Yang Xin learned to process gears, but let himself fall into the dilemma of being able to work hard.

The factory has recently received a batch of orders, and there are more than 1,000 gears of all kinds alone. There are only a dozen millers in the factory, and they also have to undertake the processing of other parts, so there are as many as five or six hundred gear processing tasks assigned to Yang Xin's master Jiang Tiemei. Jiang Tiemei's child, but at this time there was measles, Jiang Tiemei saw that Yang Xin could mill gears, so she handed over all these tasks to Yang Xin, and asked for leave to go home to take care of the child.

Yang Xin is a good girl, she received the task from her master, and she didn't know how to defend herself, she just did it stupidly, and she always did it in a state of forgetting to sleep and eat, but she was still far from completing the task.

"Brother Xiaohua, you tell my parents that I am working overtime and I am going home for dinner later." Yang Xin was sweating like rain and adjusting his head, and said to Lin Zhenhua, who was about to get off work. The little girl's bangs were soaked with sweat and stuck to her forehead, which made Lin Zhenhua feel distressed when she saw it.

"No, sister, you've been working for four or five days in a row, what's the matter, are you ready to compete for this year's production pacesetter?" Lin Zhenhua said with a smile.

"How can I have the heart to think about this, my master's task is still a long way off." Yang Xin said in a nasal voice, unable to tell whether she was tired and caught a cold, or couldn't help but want to cry.

"I see you've been milling gears all these days, why haven't you finished milling yet?"

"More than 500, and now more than 100 have been completed."

"Won't it?" Lin Zhenhua said, "Take a universal milling machine to mill more than 500 gears? This work should be done with a gear hobbing machine. ”

"What is a gear hobbing machine?" Yang Xin asked.

"Gear hobbing machine...... Lin Zhenhua scratched his head, "I can't tell you clearly, anyway, it's a machine specially used to process gears." ”

"I've never heard of it." Yang Xin said dejectedly.

In fact, this can not be blamed on Yang Xin's ignorance, gear hobbing machine is a special machinery used to process gears, with high processing accuracy, fast speed and other advantages, generally suitable for mass production of gears. At that time, all kinds of machinery and equipment were very lacking, and the gear hobbing machine was only available to a few large machinery enterprises, and medium-sized enterprises such as Hanhua Machinery Factory were impossible to use. In Hanhua Machinery Factory, if you need to process gears, you can only use a universal milling machine combined with an indexing head to achieve it as Lin Zhenhua taught Yang Xin last time.

It doesn't matter if the number of gears is small when the number is small, but it is very troublesome to process hundreds of gears at a time. Each gear must be repeatedly rotated dozens of times, and each time it is turned, the tool must be re-aligned, and then a tooth can be milled. Turn again, then turn the tool, and mill another tooth, and the cycle repeats, and the workload is very terrifying. Yang Xin has already dizzed himself these days.

"Xiaohua, you have the time, can you help me mill a few?" Yang Xin looked at Lin Zhenhua's idleness and couldn't help but say. She knew that Lin Zhenhua's skills were excellent, and she was idle anyway.

"I'm not going to do this kind of untechnical thing." Lin Zhenhua said very shamelessly.

"Dead Xiaohua, you really don't want to help me?" Yang Xinliu's eyebrows are upside down, the girls in the factory are a little temperamental, she is already a relatively gentle kind.

Lin Zhenhua shook his head: "I didn't say I wouldn't help you, I just said that I wouldn't do this kind of unskilled thing." In this way, you go home from work today, and I will think about it, and design a copycat gear hobbing machine for you, and process all your 500 gears in one day. ”

"What do you mean by a copycat?"

"It's a copycat, it's ...... Do you know that the countryside surrounds the city? Shanzhai is the meaning of millet plus rifle. Lin Zhenhua said in a language that people at that time could understand.

"You mean the dirt method, huh?"

"You can interpret it that way."

"You say you can machine 500 gears a day?"

"Well, maybe not that fast, but more than 400, it should be fine."

"Really? Then I'll get off work now, and I'll be waiting for you tomorrow. Yang Xin happily turned off the machine tool, threw the gauze gloves into the toolbox, and followed Lin Zhenhua home.

These days, Yang Xin often hears Yang Chunshan sigh at home, saying that Lin Zhenhua's skills are really unfathomable, not only can milling, welding, but also seem to be able to do some other types of work, but he has not seen any technology that Lin Zhenhua does not know at all. Yang Xin originally had a bit of blind trust in Lin Zhenhua, and when he heard his father say this, he directly raised his opinion of Lin Zhenhua from worship to superstition. Now Lin Zhenhua said that he could help her design a machine, as for what it was called a gear hobbing machine or a copycat machine, she didn't care, she only knew that what Brother Xiaohua promised would definitely not drop the chain. Brother Xiaohua's character is like the gears in the gearbox, which is accurate and reliable.

Lin Zhenhua promised to design a copycat gear hobbing machine for Yang Xin, not on a whim, he had read relevant literature in the past, and knew that the universal milling machine could be transformed into a simple gear hobbing machine. When he got home, he thought about the whole principle several times, deduced it on the diagram for a long time, and finally drew a few drawings. The next day, he came to the sand turning workshop with the drawings to find his nemesis Zhao Yongqun and asked him to help him cast a few workpieces.

At the Hanhua Machinery Factory, it is common for workers to use the equipment and materials in the factory to do some private work. For example, none of the briquette stoves used by every household in the factory were bought from the store, but the workers welded them themselves with scrap iron sheets, scrap steel bars and the like. The factory leaders will not interfere with the workers doing this kind of private work, relying on the mountains to eat the mountains and relying on the water to draft the water, as a worker in the factory, how can they not take a small advantage from the factory. In fact, the briquette stove in the factory leader's own home is also made with the help of the workers.

"Yongqun, there are a few such artifacts, can you help me cast them?" Lin Zhenhua took out the drawings and handed them to Zhao Yongqun.

Zhao Yongqun took the drawings and looked at them, simulated the appearance of the workpiece with his hands, and asked suspiciously: "What is this for?" ”

Lin Zhenhua smiled: "Yes, brother, now I look at the drawings a little bit." ”

Zhao Yongqun said: "It's not that you teach well. You don't mean to boast about yourself, do you? ”

Zhao Yongqun is a general worker in the sand turning workshop, and he usually doesn't need to read the drawings, and there is no master to teach him how to read the drawings. After Lin Zhenhua came back, he got him together with Chu Hongyang, Peng Shaozhe and others to form a study group, and taught them mechanical principles and other related knowledge when they had nothing to do. Zhao Yongqun learned mechanical drawing from Lin Zhenhua, otherwise he would not be able to imagine the appearance of the workpiece from a three-view view.

Lin Zhenhua didn't explain anything to Zhao Yongqun, but just asked: "I have useful this thing, and it is related to my brother's surname for the rest of my life...... Happiness too. If you say something pleasant, can you help me cast it? ”

Zhao Yongqun nodded and said: "These little things don't use much molten iron, I'll see which furnace has more molten iron, just let my dad help you cast one." ”

Zhao Yongqun's father, Zhao Dawei, is a sand turner, when casting workpieces, sometimes there will be some leftover in a furnace of molten iron, this remaining molten iron is useless, and it is not a violation of the regulations to cast a workpiece for Lin Zhenhua.

"Then thank you dad." Lin Zhenhua said, turning around and leaving.

"You're just leaving?" Zhao Yongqun shouted.

Lin Zhenhua said: "What, my brother asked you to work, and he still had to tip you?" ”

Zhao Yongqun said: "If you want to cast the workpiece, where is the wooden mold?" My dad is a sand turner, and he can only make sand molds, but he doesn't care about making wooden molds. ”

"yes, there's this part." Lin Zhenhua patted his head.

"You have to go to the wood mold class and find someone to help make the wood mold, and then take it to my dad to make the sand mold. In this way, you go to Lao Hu, Lao Hu has good skills, good people, and good talk. Zhao Yongqun suggested.

"Who is Lao Hu?" Lin Zhenhua asked.

"It's poplar? Don't you know him? ”

"Hu Yang? A little impression, where is he? ”

"Wooden model class, I'll take you there."