Start with the aviation industry

Chapter 19 The Critical Moment Still Must Rely on Kobayashi

Why is CNC machining not the first choice, but the second option?

It’s very simple. On the one hand, people don’t have a deep understanding of CNC, especially the imported CNC five-axis. On the other hand, they are worried that the tools and fixtures used on ordinary drilling machines may not be suitable for CNC machining.

In any case, the plan was basically decided in this way. The supervisor technician Tian Mao was responsible for the intensive repair of the drilling mold, and he was responsible for trying to process another main casing on the Z35 ordinary radial drilling machine.

Accompanied by Liu Changrong, Wu Weiqing found Lin Feng, the main purpose of which was of course to inquire about the processing of the main box on the five-axis.

"Hello, Kobayashi."

Seeing Wu Weiqing coming over in person, Lin Feng guessed something, probably related to the processing of the main casing.

"Director Wu, hello."

"Xiaolin, it's like this. We have a batch of urgent items that were originally processed on ordinary radial drilling machines, but the worker in charge of their processing was hospitalized. After a temporary replacement for processing, two pieces in a row failed to pass the test."

Sure enough, I want to go to CNC machining!
Lin Feng was in a bit of a dilemma!
There is no problem with this imported CNC machining center itself. The main problem at present is that there is no suitable boring tool and no suitable fixture.

It is difficult for a clever woman to cook without rice!
Noticing Lin Feng's troubled expression, Wu Weiqing's heart sank slightly. What he feared most was the shattering of this glimmer of hope.

"Xiao Lin, what's the matter, can it be processed?" Wu Weiqing's tone inevitably contained some eagerness.

After pondering for a while, Lin Feng said slowly, "If it is processed on this CNC equipment, there is no problem with the equipment itself, but"

"Xiao Lin, if you have any questions, just ask, and I will do my best to solve them!" Wu Weiqing promised without even thinking about it.

As long as he can do CNC machining, as long as he can process this batch of parts to pass as soon as possible, he can agree to any conditions, and he is confident in solving any difficulties.

Lin Feng said, "It's mainly about the processing of all the tools and fixtures that will be used. I just looked at the processing procedures and design drawings of the main box, and found that there are no suitable boring tools and fixtures for the time being."

It turned out to be such a thing!

Wu Weiqing almost patted his chest and said, "I'll contact the tooling design department to design the boring tool and fixture immediately."

The Fenghuang factory has all internal organs, not only has its own hospital, school, police station, etc., but also has its own tooling design department and tooling manufacturing factory.

All kinds of tools and fixtures can be completely designed and manufactured by themselves. Wu Weiqing has a good relationship with the head of the tooling design department, so I dare to guarantee it.

Lin Feng reminded, "Director Wu, as you said just now, all these dozens of main casings must be finished within two days. It is probably too late to start the design of the boring tools and fixtures now."

Yes!

It is indeed too late to redesign and manufacture again.

Hope dashed!
It seems that this imported five-axis machining is basically impossible. Although the equipment itself has no problems and can fully meet the machining accuracy requirements, there are no boring tools, fixtures and other things required for machining!
Two days is too tight!
Even if we start processing now, we still need to work overtime at night. It takes at least three to four hours to process each main box. In addition, after the positioning holes are processed, there is another process behind, which also takes time.

Wu Weiqing sighed, with a look of disappointment on his face!

He was about to leave, but he could only pin all his hopes on the first plan, hoping that after the drilling jig was refined, qualified parts could be processed.

Just as he was about to leave, Lin Feng said, "Director Wu, although it is too late to redesign and manufacture the necessary boring tools and fixtures, I have a way."

"Oh, you have a way!"

The hope that had been shattered suddenly rose again. Wu Weiqing's eyes lit up, and he asked quickly, "Tell me, what can I do?"

Lin Feng said, "Just now I went to the tool room to have a look. There is a kind of boring tool that has been slightly modified. It is not a big problem to use it for the boring of the main box on our CNC machining center."

This kind of boring tool is originally used on ordinary equipment, but it is used on CNC equipment. It only needs to be sharpened a little, and it can be finished in two or three hours.

In this way, the problem of the boring tool is solved.

"Okay, that's great." Wu Weiqing immediately became happy, "Tell me the drawing number of the boring tool and how to sharpen it, and I will arrange it now."

Lin Feng took out a piece of paper, picked up a pen, and quickly drew a sketch, marking the main dimensions and technical requirements for grinding.

"Director Wu, it is enough to grind according to this requirement, um, three grindings should be enough."

Wu Weiqing carefully put away the blank paper on which the sketch was drawn, as if it was not a piece of blank paper, but a treasure.

After thinking about it for a while, Lin Feng said, "Then there is the problem of the jig. I have also looked at the original set of drilling jigs, but it cannot be used on this CNC equipment. Then we will use a set of simple jigs."

Good simple jig!
Since it is a simple fixture, the design and manufacture are relatively simple. What kind of simple fixture is needed? Lin Feng also has a plan in mind.

Without any nonsense, Lin Feng took out another piece of white paper, picked up a pen and drew a sketch. This is a set of simple fixtures, which consist of a pad and several pressure plates.

There are ready-made pressure plates, and there are a large number of fixtures in the 406 workshop. Many pressure plates are universal, and they can basically be used from those fixtures.

The pad is specially designed, but the structure is relatively simple, and the manufacturing difficulty is not large.

Wu Weiqing is not an outsider either, he has a solid idea after seeing this simple jig, and it can be done in about two to three hours.

Also carefully put away the design sketches of this set of simple jigs, Wu Weiqing said, "Xiaolin, I will arrange special personnel for the grinding of the boring tool and the manufacture of the simple jigs, and try to finish them all before three o'clock in the afternoon."

Lin Feng said, "I am in charge of NC programming, processing preparation, etc., and strive to start the processing of the first main box at [-]:[-] p.m.."

"Okay, let's start processing the first main casing at [-]:[-] p.m.." Wu Weiqing was visibly happy.

He took the two sketches drawn by Lin Feng and left, walking fast, eager to make these things right away, and start the CNC machining of the first main box as soon as possible.

The manufacturing site, next to the Z35 radial drilling machine.

Jiang Haitao, the technical director, Tian Mao, the technician in charge, and Liu Ziming, the operator, were all there, and they were going to refine a pair of this set of drilling jigs according to the plan.

Moreover, the tooling department has been called, and the designer of this set of drilling jigs is on the way.

Not long after, the designer came over, and after understanding what was going on, he immediately poured cold water on it.

(End of this chapter)