Start with the aviation industry

Chapter 18 Everyone is under a lot of pressure
Lin Feng didn't speak, just stood on the side listening and watching, and gradually understood what was going on.

It turned out that these were a batch of urgent items. The worker who had been in charge of processing them was hospitalized. After being replaced by the current worker, two items processed in succession failed.

Seeing Jiang Haitao who was contemplating, then Wu Weiqing who looked anxious, and then at the dozen or so main casings of piston six placed aside, Lin Feng felt a slight twitch in his heart.

Since the processing of ordinary equipment is unqualified, can we consider using CNC equipment, such as putting it on this imported CNC five-axis.

After this idea popped up in his mind, Lin Feng was ready to give it a try, instead of staying here, he went back to the technology room.

Find out the technical specifications of the piston six main casing, and find out its design drawings, and spread the drawings on his big table, Lin Feng looked at them seriously.

Everyone else in the technology room was busy with their own affairs, some even stayed at the production site, and no one paid attention to what Lin Feng was doing.

No one disturbed him at all. Lin Feng carefully read the design drawings and the processing procedure of the main casing. After thinking about it for a while, he felt that it could still be processed in theory.

The three precision positioning holes of the main box have relatively high requirements, which are compared with ordinary equipment. The tolerance of the hole diameter is 5 wires, the position is 10 wires, and the angle is 45 degrees. These are for this imported CNC five-axis Said the problem is not big.

Not to mention the position of 5 wires, even the position of 2 wires is no problem for this device.

There is no problem with the equipment itself, and the accuracy can be fully achieved. The key depends on whether there are suitable tools, such as drills and boring tools for processing these positioning holes, and whether there are suitable fixtures.

The set of tools and fixtures currently used by ordinary drilling machines may not be suitable for use on this CNC five-axis machine. Lin Feng decided to confirm the tools, fixtures and other things first.

As a result, Lin Feng also got busy, specifically looking at the set of tools used on ordinary drilling machines and the set of fixtures used to process the main box.

It is a pity that only one drill bit in this set of tools can be used on the CNC five-axis, and there is a lack of a boring tool.

We all know that the small holes on the workpiece are usually drilled with a drill first. If the precision of the processed hole is not high, sometimes it can be completed in one step, and the drill can be drilled directly with a single performance.

If the precision requirement is high, it must be carried out in several steps, first drill with a drill, then ream with a reamer, or bore with a boring tool, so as to obtain a machined hole with relatively high precision.

The precision of the positioning holes on the six-piston main casing is relatively high. In addition to the first step of drilling, the second step of processing is also required. Lin Feng believes that it is better to use a boring tool for the second step of boring such holes. , The precision of the machined holes is higher, and this CNC five-axis machining center is also more suitable for boring holes, because the precision of the machine tool itself is very high.

Lin Feng was busy, and Jiang Haitao, Wu Weiqing, Liu Changrong, Tian Mao, etc. also left the production site. Now, they are meeting and discussing in the conference room of workshop 406.

Three Zhuge Liang are better than a cobbler!

Everyone is ready to brainstorm and have a good discussion, hoping to come up with countermeasures.

The meeting had only started for a few minutes, and before any countermeasures had been discussed, someone knocked on the door and came in, "Director Wu, your phone number."

It is now 1990, and there are no mobile phones. As for mobile phones, BP machines will not appear until a few years later. The main way for everyone to communicate is through landline phones.

This call was made directly from the 406 workshop, and someone answered the call and hurried over to inform.

The meeting was temporarily interrupted, Wu Weiqing hurried out, and came in after about four or five minutes. Everyone noticed that Director Wu's complexion was a little bad.

Seeing that everyone was looking at him, Wu Weiqing did not hide anything, and said in a low voice, "Mr. Meng called and asked about this batch of main boxes in person, requesting that the processing be completed within two days and delivered to the warehouse smoothly. The assembly workshop is waiting for this batch of main boxes. parts for the final assembly of the piston six engine."

After finishing speaking, Wu Weiqing sighed softly, feeling even more stressed.

Everyone knows that the "Boss Meng" he refers to is the senior management of Phoenix Factory, Meng Bowen, the deputy factory director in charge of production and manufacturing, the first brother of the entire production system of the factory, and has a very high prestige in the production system.

It never occurred to him that Meng Bowen would find out about this matter. This is a good thing not to go out, and a bad thing to spread thousands of miles.

The pressure in Jiang Haitao's heart also increased, and he said slowly, "Mr. Meng only gave us those two days, so within these two days, we have to process this batch of main casings no matter what. .”

Everyone was silent for a while, lowered their heads slightly, and finished all the processing within two days, which is almost an impossible task.

Too much pressure!
This is how to do ah!

Jiang Haitao, Wu Weiqing and others were discussing this countermeasure. In Meng Bowen's office, there was a special guest.

This is a senior colonel, the two bars and four stars on his shoulders are very eye-catching. This is the representative of the military's general army stationed in the Phoenix Factory.

The only thing he came to Meng Bowen in person was to urge the delivery of the six-piston engine.

"Old Meng, the aircraft factory has been calling me, requesting to deliver no less than 5 piston six engines as soon as possible, and no less than 10 next month. They are seriously short of engines, which almost affected the aircraft manufacturing. .”

90. The 21s happened to be the high-production period of the six-piston engine. This engine was mainly used for the power of a certain primary trainer. Until the [-]st century, with the mass production of advanced trainers and the parallel installation of troops, the military’s demand for primary trainers It just started to fall back quickly.

After entering the 21st century, the annual output of six-piston engines at Phoenix Plant dropped from more than 100 units at the peak to [-], [-], or even a dozen units.

After the 21st century, the piston six is ​​mainly used for agricultural aircraft, and the demand is no longer as strong as that of the eight and 90s.

The military needed it, the aircraft factory was waiting for the rice to cook, and the representative of the general army came over in person. Meng Bowen felt pressure in his heart, but he didn't show it on his face. Instead, he easily promised that there was no problem.

406 Workshop.

After nearly an hour of discussion, I finally came up with two options.Plan [-], fine-tune the jigsaw, and then take a risk to try. This is risky, but at this time, all risks can only be borne by Jiang Haitao and Wu Weiqing.

After all, workshop 406 has out-of-tolerance indicators and scrap indicators every year. If the processing is still unqualified, then these indicators can only be filled.

The second option is to try it with CNC machining, that is, to try it on the imported CNC five-axis.

(End of this chapter)