When will I have a long tassel?

Counterfeiting a device is actually not difficult. The design of various machines must follow certain routines, such as how to connect two parts, which can only be done in a few ways. Not to mention engineers like Zhao Xingwang who have a professional background, even ordinary fitters, as long as they have some With experience, you can see clearly.

Many parts in the machine are standard parts, such as screws, springs, bearings, etc., with several fixed specifications. When designers design machinery, they usually choose parts with fixed specifications instead of making their own.

The use of parts with fixed specifications means that many parts can be mass-produced by professional factories, which can significantly reduce costs. In addition, the unified specifications of parts mean that the versatility can be improved. Parts of the same specification in different locations can be interchanged. Users do not need to prepare separate spare parts for each part, which can reduce the cost of spare parts inventory.

The standardization of parts can also improve the versatility of tools. For example, the nuts of general screws are hexagonal and come in several different sizes. The repairman only needs to prepare a set of hexagonal wrenches to remove all screws. If the nut shape is not uniform, some are triangular or pentagonal, it looks quite artistic, but the repairman will go crazy.

Since most parts are standardized, when copying a device, these parts can be purchased from the market, and copycat manufacturers do not need to manufacture these parts themselves.

Heling City has a developed private machinery manufacturing industry, thus forming a very complete parts supporting system. In the streets and alleys of Heling City, there are various spare parts stores, where you can buy spare parts of various specifications. This is a bit like the "Huaqiangbei" of later generations. You can design a new mobile phone with superior performance according to your own needs, and all accessories are ready-made.

Companies such as Longhu Machinery Factory dare to try copycat new equipment. It is precisely based on such an industrial supporting system that economists call it the "industrial commons."

The Zhao brothers transported Linyi's baler back to the factory, and immediately organized workers and engineers to start further disassembly and draw assembly drawings. For the standard parts involved, someone will measure out the specific specifications and then go to the store to purchase them. For those non-standard parts, you need to measure the specific dimensions, draw them, and manufacture them yourself.

"The front-end locking mechanism bearing is broken..."

Zhao Xingwang and two engineers squatted in front of the component called the front-end locking mechanism, carefully observing the structure of the component.

The baler designed by Linyi Machinery adopts a front-end block ejection design, that is, after the light scrap steel is pressed into bales, a special device will push it out from the front end. The door at the front end is closed when the machine is pressing the bales, and will be opened after the bales are pressed to facilitate the removal of the bales.

This opening and closing naturally requires a locking device. From the perspective of the entire pressing process, this locking device has to withstand some pressure. If the pressure is too high, parts may break.

In the report of Jingnan Daily, it was categorically claimed that a company's counterfeit baler's front-end locking mechanism had a bearing fracture, and the Linyi Machine engineer named Han Weichang told reporters that this It is caused by insufficient processing accuracy. Although Zhao Xingwang didn't completely believe the content in the newspaper, when he disassembled this part, he couldn't help but take a few more looks.

"Mr. Zhao, I think the reporter may have made a mistake?" said an engineer named Pan Youdong. "Judging from the stress, it is impossible for the bearing to break. However, the front support shaft is relatively stressed. If it needs to be broken, it must be broken along this axis.”

"What does the reporter know? She must have misheard what was said." Another engineer named Liu Nian said.

Zhao Xingwang nodded and said: "You are right. I also think there is nothing wrong with the bearing. If there is a problem, it should be the problem with the support shaft. The newspaper said that the cause of the failure was insufficient machining accuracy. What do you think? Does it make sense?”

"I've never heard of this." Pan Youdong said, "What's the relationship between machining accuracy and force?"

"It still has something to do with it," Liu Nian said. "If the accuracy is low and the surface is not smooth enough, the contact surface between the shaft and the bearing bush will be small, and the pressure distribution will be uneven. Will it easily lead to breakage?"

"It makes sense." Zhao Xingwang said.

Liu Nian said: "Mr. Zhao, Youdong, you see, the machining accuracy of this support shaft is indeed very high. The other parts are precision turned, and this one is obviously ground. The same is true for Han Weichang. Said."

Pan Youdong said: "Whatever, since he said it needs to be ground, let's just go to the grinder and grind it. It won't add many working hours."

Zhao Xingwang said: "That's right, we do everything according to their standards. They use lathes for processing, and we also use lathes for processing. They use grinders, and we also use grinders. We make them exactly the same, so I don't believe there will be anything wrong. .”

Although they are said to be exactly the same, there are actually some differences in the end. The selling point of counterfeit products is that they are cheap, so you don’t have to pay too much attention to requirements such as appearance.

Influenced by the psychological implications of the newspaper article, Zhao Xingwang put forward relatively high requirements when it came to stress-bearing structures, including adding a grinder to some areas that originally only needed to be finished with lathes. Processing process. But in other places, Longhu Machinery Factory adheres to the principle of saving what can be saved, and the equipment it finally built is much louder than the Linyi machine in terms of noise.

“It’s still not as good as the original quality.”

After Zhao Xingwang led a team of workers to install the "Longji Brand" baling machine in the workshop of Yuntang Company, Yu Changfa looked at the equipment from three walks up and down, smacking his lips and commenting.

"This is just the appearance, it is exactly the same in use." Zhao Xingwang said.

"Have you tried the machine before you shipped it here?" Yu Chang asked.

Zhao Xingwang said: "I tried it and typed 50 bags. Except that the sound is slightly louder, there is no other difference from the Linyi machine."

"So can you turn on the phone now?" Yu Changfa asked again.

"You can do it at any time." Zhao Xingwang said.

Yu Changfa called his workers and asked them to start loading materials, and then started the baling machine to start work. A pile of rusty scrap steel was put into the baling machine, and the machine roared, squeezing the scrap steel of various shapes into thin pieces. Then, the package outlet at the front was opened, and a package block was pushed out and fell to the ground. Subsequently, the bag outlet is closed again, the upper cover of the machine body is opened, and the automatic feeding device puts the next batch of waste materials into the machine body, starting a new round of compression and packaging.

"Well, the sound is a bit loud." Yu Changfa said critically. In his heart, he is quite satisfied with this baler. The packaging effect is no different from that of Linyi Machine's baler. It doesn't matter if it is louder. The workshop is already noisy, so who cares about the sound of the machine? Woolen cloth.

"Let me tell you!" Zhao Xingwang said with a proud look on his face, "Don't listen to the nonsense of those reporters. What kind of counterfeit products are of poor quality? How about fooling ghosts? With such a machine, I can do it with my eyes closed..."

As soon as he said this, he heard a crisp "click" sound, followed by the overload sound of the motor. The operator sitting next to the console was experienced and pressed the stop button quickly. The motor suddenly stopped, and the scene fell into silence.

"This is..., what is going on!" Zhao Xingwang shouted.

"Mr. Zhao, the support shaft at the front end..." Pan Youdong, who came with him to test the machine, pointed at the baler, and his voice changed a bit.

I saw that at the front end of the baler, the bale outlet that was supposed to be locked was squeezed open. The support shaft at the lower end of the bale outlet had separated from the shaft seat, and there was a white stubble on the surface.

The support shaft is broken!

Zhao Xingwang only felt his head buzzing, and he couldn't see anything in front of him, only the gray-white stubble was left.

How is this possible? I clearly copied it strictly according to the equipment dimensions of Linyi Machinery. Linyi Machinery said that the support shaft needed to be polished, so I asked the workers to polish it according to the standards. The surface accuracy, roundness, etc. were all the same as those of Linyi Machinery Equipment. The shaft on the top is exactly the same, so why would it be broken?

Before sending the equipment to Yuntang Company, he had already tested the car in the factory. Although there were not 50 packages as he told Yu Changfa, there were more than a dozen packages, and the equipment was running without any problems. Now, just after tying a few bags, the shaft broke. How should he explain this?

"Mr. Zhao, I've taken a look. There were a lot of short steel bars in the scrap steel just now. Maybe the pressure was a little too high when packing..." After Pan Youdong stepped forward to take a look, he came back and reported to Zhao Xingwang in a low voice.

When the baling machine was tested at Longhu Machinery Factory, the raw material used was iron shavings produced by the factory itself. It was relatively soft and the baling pressure was not high. There are many types of scrap steel from Yun Tang Company. Some short steel bars are very strong. To squeeze them into pieces requires greater pressure. Obviously, the support shaft of the front-end mechanism cannot withstand this. Broken due to pressure.

The reason was found, but Zhao Xingwang couldn't tell Yu Chang at all. The baler is used to compress various steel materials. The thin scrap steel purchased by the recycling material company includes soft materials such as iron shavings and iron sheets, as well as high-strength materials such as steel bars and screws. The baler must be able to handle various materials at the same time. Okay, there is no reason why the steel bars will be damaged if they are pressed a few times.

"Mr. Zhao, what's going on?"

Yu Changfa also came over, his face frighteningly dark. If he only believed 30% of the content in the newspaper before, he now believes 90%. It seems that Linyi Machinery does have unique technical know-how. They said that the quality of copycat products is not good, and they are not deliberately trying to undermine their competitors.

Let me explain, in fact, I made a mistake in writing the first 64 chapters. At that time, I planned to write about the shaft breaking, but it turned out that the bearing was broken. It’s difficult to change chapters that have already been sent out, so I’m going to find a way to get them back here.