Liu Lang taught everyone a lesson on the spot, and the people around him were suddenly "in a hurry".

"Mr. Liu, wait, we have to remember it quickly!"

Liu Lang "taught" on the spot, which everyone did not expect, and he had not prepared a notebook in his hand.

"Don't worry, I'll explain to you in the past two days, the next step is to specialize in this CNC machine tool, the control system is not to mention, we have to take our time, but we can gradually master and learn in terms of design and casting. ”

Liu Lang waved his hand.

"That's right, we don't have any computers, but it's all steel, as long as it's steel, we have the confidence to get it out, isn't this thing also made by people? More than three years ago, we didn't have a fart, and now? Look at those bearings, who can compare? It's a big deal, let's do it again for three years. ”

A person shouted "indignantly", he is Ma Ming, the first worker to learn the reinforcement welding technology, is now a workshop leader, is Liu Lang's right-hand man, three years he has grown from an ordinary worker to an eighth-level worker, with the improvement of the craft confidence is also constantly "inflated", in his eyes there is nothing that is not done by people, as long as you sink down to any difficulty can be overcome, and he is also Liu Lang's "brain powder", feel that Liu Lang is omnipotent.

"Yes, Ma Ming said it well, as long as it is a casting, we have a way to get it out!"

The crowd also agreed.

We also have self-confident capital, NORINCO Group is now strong, three years to overcome a lot of casting difficulties, just to apply for more than 30 national patents, the production of 13 kinds of knives and eight kinds of bearings have become the highest domestic standards.

The quality of these products is much higher than that of domestic products, and the price is lower than that of similar foreign products, so the market is in short supply, of course, most of the products that can afford the products of the North Industries Group are medium and large enterprises, and there are also some enterprises in the south, although there is no overwhelming situation in the market, but there is no doubt that the choice of the market is high-quality products, unless you sell them to some poor places such as rural areas.

These parts alone can bring more than 10 million sales revenue to the North Industries Group every month, leaving taxes and costs in addition to nearly 1.5 million profits, the profit margin is very high, the profit margin of the machinery industry can reach 10 percent, the profit margin of the North Industries Group is more than 15 percent, and this profit margin is still based on the high wages of the workers, which is mainly due to high technology and new technology, from these two aspects, the North Industries Group has been far behind other domestic enterprises。

But this is only on the premise that the company only has 20 products, and the added value of these products is actually not high, unlike any engine transmission products.

Of course, Liu Lang knows some of the problems of North Industries Group at this stage, his purchase of CNC machine tools is to mobilize everyone's emotions again, so that they can realize the shortcomings, when you have a goal again to arouse motivation, now everyone is "excited", Liu Lang's goal seems to have been achieved.

Liu Lang motioned to everyone, he had something to say, and the scene immediately fell silent.

"Everyone is very right, any piece of equipment, the key is to look at the person, just now Brother Ma is right, these are all steel castings, what do we do? is to do these jobs, as long as we work together, within five years, we can also manufacture CNC machine tools. ”

Liu Lang's declaration made everyone excited again, and in their eyes, Liu Lang's words were iron laws and truth.

"And let me tell you, this kind of CNC machine tool is not omnipotent, it will also have problems, if there is no professional person to operate, then it is similar to ordinary machine tools......... Let's do it, I'll teach you the day after tomorrow!"

Liu Lang feels the need to give you a lesson, the main purpose of this lesson is to let everyone really realize that this CNC machine tool is not so "scary", it also has a variety of problems, so that everyone has self-confidence, but also to teach everyone how to use CNC machine tools, how to debug.

"Okay, Mr. Liu is going to give us a lecture again!"

Everyone's favorite thing is to listen to the lectures, especially Liu Lang, who can learn a lot of knowledge every time.

Three days later, everyone gathered in the conference room, Liu Lang deliberately transported a CNC machine tool to the conference room, of course, this is also very simple, this building was prepared in the construction of a large elevator, which can load several tons of goods.

"The advantage of CNC machine tools is precision, which cannot be achieved by human beings.

As we all know, machining accuracy is measured by tolerance grade, the smaller the grade value, the higher the accuracy, and the machining error is expressed by numerical value, the larger the value, the greater the error. High machining accuracy means that the machining error is small, and vice versa.

There are 20 tolerance grades of CNC machine tools from IT01, IT0, IT1, IT2, IT3 to IT18, of which IT01 indicates that the part has the highest machining accuracy, and IT18 indicates that the machining accuracy of the part is the lowest, and generally IT7 and IT8 are medium levels of machining accuracy. ”

However, the actual parameters obtained by any machining method will not be absolutely accurate, from the function of the part, as long as the machining error is within the tolerance range required by the part drawing, it is considered to ensure the machining accuracy.

Everyone thinks that the control system of the CNC machine tool determines the accuracy, in fact, it is not completely accurate, this is like a person, your brain knows what you want to do, but your hands and feet do not obey the call is in vain, just like a "cerebral thrombosis" patient, he understands everything, but the parts of the hands and feet do not work. ”

Liu Lang's description was very appropriate, and everyone burst into laughter.

"Accuracy still depends on the quality of the machine, and the quality of the machine depends on the processing quality of the parts and the assembly quality of the machine, and the processing quality of the parts includes two parts: the machining accuracy and the surface quality.

This CNC machine tool is not very accurate now, it needs to be adjusted artificially, the adjustment method is first to reduce the error of the machine tool, which can have several methods, one is to improve the manufacturing accuracy of the spindle components. ”

Liu Lang opened the CNC operation panel.

"First of all, to improve the rotation accuracy of the bearing, we can choose high-precision rolling bearings, or use high-precision multi-oil wedge dynamic pressure bearings, or use high-precision hydrostatic bearings. ”

", Mr. Liu's operation ability is so powerful?"

Liu Lang was very skilled in disassembling all the parts, and everyone was stunned, Liu Lang rarely operated in the past, but now he shows it a little.

Liu Lang disassembled similar machine tools in the United States back then, and he remembered all the details clearly, and for him, he could "break it off" with his eyes closed.