When Lin Zhenhua came to Luzhong Machine Tool Factory, he was just in time for Ma Shengfan to take several workers and technicians to test a large horizontal machine that had just been assembled. At the testing site, there were also Benyoujun, Wei Jingwen and others from Hanhua Heavy Industries, everyone had a smile on their faces, obviously the test results were more satisfactory.

The machine tool is a kind of machine tool that processes prefabricated holes on the workpiece, and is generally used to process large box parts. Ma Shengfan's horizontal bed they are testing is more than 3 meters high, and the workbench is 3 meters long and 2 meters wide, which is a big guy.

This type of large horizontal boring machine is a traditional product of Luzhong Machine Tool Factory, and in the past few decades, I don't know how many machinery companies have been equipped. However, in recent years, under the extrusion of imported CNC sonorous beds, the horizontal sonorous beds of Luzhong Machine Tool Factory have gradually begun to be unsalable. This is also a way to do things, the machine is a machine tool with high precision requirements, the accuracy of manual positioning is not as good as CNC positioning, and customers are naturally more willing to choose CNC machine tool.

After the cooperation between Luzhong Machine Tool Factory and Hanhua Heavy Industry, Hanhua Machine Tool Company sent a group of technicians to come over and work with the technical personnel of Luzhong Machinery Factory to tackle key problems and carry out numerical control transformation of this traditional sonorous bed. In terms of CNC technology, Lin Zhenhua's layout is very early, and Hanhua Machine Tool Company has reserved a lot of CNC technology, which is now being applied on the platform of Luzhong Machine Tool Factory.

What Lin Zhenhua sees now is the first CNC horizontal boring machine produced after transformation.

According to the production specifications, after the assembly of the machine tool, it is necessary to carry out testing, including reliability, static stiffness, dry running vibration, thermal deformation, vibration resistance cutting, noise, excitation, positioning accuracy, spindle rotation accuracy, linear chalkiness unevenness and machining accuracy, etc.

This test project is commonplace for Luzhong Bed Factory. But for Hanhua Machine Tool Company, it is relatively unfamiliar. There is still a threshold in the machine tool industry, and this threshold is this variety of norms. Lin Zhenhua borrowed the Yonghe Agricultural Machinery Factory of the Right Army as a platform to build a machine tool accessories company, but he did not dare to directly enter the field of machine tools, the reason is that he could not cross this threshold.

Lin Zhenhua, the secretary of the factory department, received him from Huomu Station to the factory, and according to Ma Shengfan's instructions, he was directly taken to the general assembly room. Ma Shengfan was directing several workers to fix the experimental workpieces on the workbench, and when he saw Lin Zhenhua coming in, he raised his head and shouted affectionately: Manager Lin, you came just in time, we are doing the last test, if this test is qualified, we will cut the ribbon. ”

Lin Zhenhua stepped forward and wanted to shake hands with Ma Shengfan, but Ma Shengfan avoided him: Don't, I have oil in one hand. ”

Qiao Zhenhua smiled: Why, Director Ma, why are you still doing it yourself. ”

Ma Shengfan said: I love to do this kind of work. You wait for me for a while, and I'll be fine right away. ”

Lin Zhenhua stepped aside, stood beside Benyoujun, and asked: Platoon commander, how is it, did the test go well?

The right army nodded and said: It went very well. The technical strength of the Luzhong factory is really unspeakable, and the quality of the workers is also high. However, our people are not ashamed, Yang Wenyong followed to do the assembly together, and even the masters praised him with their thumbs. ”

Yang Wenyong door, Lin Zhenhua asked strangely, how can he understand this door

You Jun Dao: This kid is now out of the division, all the way, this time it really showed a little face to our Hanhua machine tool. ”

Yang Wenyong is now the best machine tool assembler of Hanhua Machine Tool Company, and his skills are practiced by countless German Japanese machine tools. In the repeated assembly practice, he summed up a lot of tricks, and indeed, as Ben Youjun said, he was able to bypass the class.

After the cooperation between Hanhua Machine Tool and Luji, Yang Wenyong went to Luji to participate in the assembly of machine tools.

On the side of Luji, there are more than a dozen old fitters who have been engaged in machine tool assembly for many years, and they are very experienced. At first, everyone just regarded Yang Wenyong as an apprentice and asked him to do this auxiliary work. Yang Wenyong doesn't mind, he does whatever he asks him to do, but when he is free, he always follows the masters to observe their every move, and then corroborates it with his own experience.

Assembling a machine tool is a delicate job. Each part of the machine tool is allowed to have a certain tolerance when machining, and when they are assembled together, the tolerance on each part accumulates, which will affect the geometric accuracy of the machine tool. Skilled assemblers need to constantly measure the mutual position of the parts in the process of assembly, and if it is high, it is necessary to shovel off a little with a scraper; If it's low, add a small spacer. The specific addition and subtraction depends entirely on the experience of each individual. ,

In the process of assembling this large hammer machine, Yang Wenyong gave full play to his assembly experience, and even corrected the mistakes of Luji's masters several times, and won the praise of everyone.

As he spoke, the bed over there had already begun to work. The knives rotate at high speed, reaching deep into the workpiece, bringing out beautiful chips. The surrounding technicians and workers nervously observed the working condition of the resonant bed, and evaluated its vibration, noise and other indicators. After cutting a hole, the two Pei Mo workers quickly ran forward and began to measure the accuracy of the processing with micrometers and other plastic tools. "1000 mm deep hole machining, hole spacing error 0.02 mm!"

The technician loudly reported the results of the test, and the scene immediately burst into warm applause. Ma Shengfan happily ran to Lin Zhenhua's side, patted Lin Zhenhua's shoulder with his oily hand, and said: Great! It's just wonderful! ”

Lin Zhenhua just came back from a meeting in Beijing, and he was wearing a new suit, so Ma Shengfan took a shot, and the suit became a rag. However, Lin Zhenhua didn't mind, just asked with a smile: Director Ma, I don't know what this indicator means. ”

In fact, Lin Zhenhua still has some understanding of indicators such as machine tool accuracy, but what he doesn't know is the significance of this indicator relative to Luji. Looking at Ma Shengfan's happy appearance, it should be a major progress.

Ma Shengfan said: Let me tell you, the hole error of deep hole processing, we used to almost 0.05 mm, and now it is reduced to 0.02 mm, which is a great thing, our products have reached the international advanced level all of a sudden. The precision consonant machine imported from Germany in China is just this standard. ”

Congratulations, Director Ma. Lin Zhenhua snorted.

This credit can be attributed to our teacher Wei. Ma Shengfan said, as he spoke, he shouted to Wei Jingwen, who was discussing control instructions with the operator in front of the operating table: Teacher Wei! Come and talk. ”

Wei Jingwen walked over with a smile and said hello to Lin Erhua. Ma Shengfan took Wei Jingwen's hand and said: "Teacher Wei, thank you, the automatic compensation mechanism you have engaged in is really good." ”

No, no, it's not where I want to be. Wei Jingwen didn't know whether to be modest or conceited.

was so wide that Lin Zhenhua looked confused, Ma Shengfan introduced Lin Zhenhua by comparison:

It turns out that the precision of the deep hole of the sonorous bed has always been a major technical problem that plagues Luji. The deep holes processed by the cloud machine can sometimes reach a depth of one or two meters, which is equivalent to a resonance knife to extend one or two meters from the headstock and then process. After the shaft of the hammer is stretched out for too long, there will inevitably be a certain deformation, which is mainly due to the sagging brought by the weight, which is called the bow of the knife in the factory.

Originally, the cutting tool was machined against the middle line of the hole, but once the head is lowered, the hole will deviate from the correct position, and the machining accuracy will be affected.

In the past, this situation was corrected by the experience of the machine operator, for example, by raising the position of the headstock a little higher, so that the knife was lowered and then landed in the right position. However, this kind of manual compensation is too affected by the individual ability of the operator, and the accuracy is not stable enough.

Wei Jingwen and his electronic team, after a large number of field measurements, developed a set of automatic compensation mechanism, which is controlled by the chip on the machine tool, according to the length of the knife stretched out, automatically adjust the position of the ram behind the knife shaft, to compensate for the bow of the knife. The test just now shows that this compensation mechanism has played a role, and the machining accuracy of the resonance bed has been greatly improved.

It seems that we still have a lot to learn. Ma Shengfan said to Lin Zhenhua with emotion, it turns out that we don't understand numerical control, and the way to compensate for the accuracy is to add a gasket, at best, to add a bracket to support the shaft. Teacher Wei, what program did they use, and it was solved at once, it was really amazing. ”

Lin Zhenhua said with a smile: I just talked to Manager Ben, and he said that we have a lot to learn. The production experience of Luji is what we lack, and we have learned a lot through the cooperation with Luji this time. ”

Hehe, what are you and ours, we are now a family.

, Ben Youjun said with a smile on the side, in the next step, I plan to pull the team of Qiyang over, comprehensively learn from the director of the Ma factory and the masters of the Luji factory, and strive to come up with more new products. ”

Ma Shengfan said: Okay, that's all for today's test. Lao Wang! ”

Wang Haisheng, the chief of the technical section, came in response: Director Ma, what are the instructions?

You sort out the relevant information, I will take Manager Lin, Manager Ben, and Teacher Wei to dinner first, and you will go back and take the workers over together. Ma Shengfan said.

Okay, Director Ma, you can go. Wang Haisheng agreed.

Ma Shengfan pulled Lin Zhenhua and said: Let's go, Manager Lin, let's not get drunk today. ”。 ）………… I had a morning meeting, and then I had a meeting at half past one in the afternoon, and I rushed to code out a chapter in the middle, which was a bit rushed, and I didn't scrutinize it enough, sorry. There should be an update in the evening. In the past two days, I have seen many readers asking when it will be updated, and I am really touching. The ancients said: The so-called home means that there is someone waiting for you. Orange is really ashamed and hopes to be able to resume normal updates in a day or two.