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Chapter 33 Accuracy is average, better than solid
what's going on!
Ma Ji's heart felt inexplicably tense. He thought that if he wanted to become the supervisor technician of that domestic CNC machining center, his biggest competitor was Lin Feng.

He has been secretly paying attention to Lin Feng's situation these two days.

Seeing that Lin Feng's main energy seemed to be on the fixed plates of the torsion measuring cylinders, and he didn't even go to see the machine tool being installed and debugged, Maggie felt relieved.

What now?
Lin Feng was flipping through the technical manual of that machine tool, page by page. Seeing this scene, Maggie felt very stressed.

The technical manual is very thick, but instead of three, there is only one, and it is not in English, but in Chinese.

It took two days for Lin Feng to finish reading this thick technical manual. As expected of a god-level learning talent, he not only memorized the contents firmly, but also basically digested and understood the contents.

This CNC machining center basically has no secrets in front of Lin Feng.

After being familiar with and understanding this CNC machining center, Lin Feng will inevitably compare it with that imported five-axis CNC machining center.

After making a comparison in his mind, Lin Feng smiled wryly and shook his head lightly, the two are completely incomparable.

Although they are all CNC machining centers, one is five-axis linkage, and the other is only three-axis. In addition, there is a world of difference in terms of function and machining accuracy.

If the imported five-axis machine is a high-end version among CNC machine tools, then this domestic three-axis machine is a beggar's version.

It is not intentional to belittle domestic CNC machine tools, but this is indeed the case. There is at least a 20-year technological gap between the two.

In 1990, domestic CNC machine tools could only be regarded as just starting, while foreign countries were in a stage of rapid development. Although the gap between the two has been significantly reduced, the gap still existed before Lin Feng was reborn and crossed.

After reading the technical specification, of course we have to take a look at this domestic CNC machine tool that is being installed and debugged.

The manufacturing site is very busy. Workers are processing various parts, including parts for piston six engines and turboprop six engines.

After a few days, the installation and debugging of this domestic CNC has come to an end. After all, it is a beggar’s version, not so expensive, and the installation and debugging are not so strict.

Jiang Haitao was next to the machine tool, and seemed to be communicating with the after-sales service personnel of the machine tool manufacturer, and Ma Ji was also beside him.

Lin Feng walked to the machine tool and quickly understood what was going on. It turned out that Director Jiang proposed that the acceptance of the machine tool not only requires laser testing, but also the processing of actual parts.

At the beginning, the after-sales personnel of the machine tool disagreed, thinking that it would be enough to meet the technical requirements after laser treatment. As a result, Director Jiang proposed that there was a requirement in the contract, and processing a formal part was still one of the acceptance checks.

In other words, laser testing and inspection alone is not enough, and one more part needs to be processed.

Since this is written in black and white in the contract, the other party's after-sales personnel can't insist anymore, but just insisted, "Since a formal part is to be processed, we don't care about the processing preparation and programming, and you are responsible for it yourself."

This is creating a problem, and the purpose is of course to make Jiang Haitao quit.

For their manufacturers, it is best not to process formal parts. I wish Jiang Haitao could sign the acceptance report now.

Jiang Haitao sneered when the other party made a problem on purpose and didn't want to compile the NC program, and probably wouldn't provide processing instructions or the like.

Without Zhang Butcher, could we still eat hairy pigs?

Seeing Lin Feng nearby, Jiang Haitao gained confidence and said loudly: "Xiao Lin, this machine tool must process a formal part for acceptance. You are responsible for this matter, are you sure?"

Lin Feng said confidently and relaxedly, "Director Jiang, there is no problem, I can start preparations now."

Ma Ji's face darkened slightly. He originally thought that Director Jiang would hand over this matter to him. How could he know that he didn't even look at him.

He felt very uncomfortable, and said unconvinced, obviously I came first, why didn't you entrust this task to me!
However, Director Jiang didn't even look at him, only Lin Feng seemed to be in his eyes.

What parts to choose?

Lin Feng quickly got the answer, and his eyes fell on the turboprop six turbine disks not far away. There were about seven or eight third-stage turbine disks on the cart.

The turboprop six engine has a total of three stages of turbine disks. Their materials are high-temperature alloys, and the blanks are die forgings. Step by step, more than [-] processes can finally be processed into a formal part, and the processing cycle is relatively long.

Obviously, this batch of turbine disks has just started to process the rough machining processes in the early stage, and the milling and drilling of the bosses have not yet started, so they are suitable for processing on this machine tool.

"Director Jiang, there's the third-stage turbine disc of the turboprop six over there. How about taking one and trying it out?"

Jiang Haitao reminded, "They have just started a few rough processing procedures, is that okay?"

Lin Feng said, "Obviously, the next process is the milling of five bosses, so you can try it on this machine tool."

The third-stage turbine disc has five bosses, which are formed by milling, first rough milling, followed by fine milling.Rough milling is a laborious job, and the amount of material removed is also very large. It takes two or three hours to process one piece on a common milling machine.

Is it suitable for CNC equipment to do rough machining?

Jiang Haitao was worried about this, "Xiao Lin, that's rough processing."

Lin Feng said: "This equipment can also be used for rough machining, there is no problem at all."

After reading its technical manual, Lin Feng knew this equipment very well.

The imported five-axis linkage CNC machining center must not be used for rough machining, because it has high precision, and rough machining will affect the accuracy.

As for this equipment, although its precision is average and its functions are relatively simple, it has a special feature, that is, it is strong, with rough skin and thick flesh, so there is no problem with dry rough machining. Finishing is also fine, but it can't adapt to finishing with too high precision.

The after-sales personnel of the machine tool manufacturer were worried that the 406 workshop would bring a high-precision part for trial processing. They were worried about what to do if the processing accuracy could not be achieved. Originally, they only did rough processing, so there was no problem.

"Director Jiang, our machine tool is fine for rough machining. This machine tool is very solid. I'm sure there is no problem."

Is there really no problem?
Seeing that everyone in the machine tool factory said so, Jiang Haitao agreed, "Then give it a try."

(End of this chapter)