Chapter 68 Paddle shaft processing

Workshop No. 1.

In addition, with the arrival of the second batch of purchased machine tools, these machine tools are being installed and commissioned, although these machine tools are domestic, but among the domestic machine tools, they are definitely the best.

In addition, domestic machine tools are generally not expensive, a better CNC lathe, generally 600,000, 700,000, a little bigger, no matter how good it is, it is only worth more than 1 million. The basically identical CNC lathes imported from Germany are at least three or five times more expensive in price.

A German CNC lathe, at least three or four million, a little bigger, a little better, more expensive, five or six million are available.

If it is a general mechanical processing enterprise, who is willing to spend so much money to buy such expensive equipment, but, as the saying goes, you get what you pay for, the price is a little more expensive, but the quality is absolutely not to say, Li Tianfeng believes that even if the price is much more expensive, he is also the priority to buy imports.

The price of domestic three-coordinate CNC vertical machining center is slightly more expensive than that of domestic CNC lathes, generally one or two million, and even more than three million, but the three-coordinate CNC force machining center in Switzerland is more expensive, at least six or seven million, or even more than 10 million. As for what five-axis linkage and six-axis linkage of the number milling center, it is more expensive.

According to the plan, if all the equipment in the first workshop is in place, the total value of the equipment will exceed 500 million, including at least 40 or 50 CNC lathes, more than 20 three-coordinate vertical machining centers, several five-axis linkage CNC machining centers, and at least three six-axis linkage high-precision digital milling centers.

In addition, there are more than a dozen various types of CNC grinding machines, all kinds of CNC EDM wire cutting machine tools, deep hole drilling machines, etc., as well as a small number of ordinary machine tools, such as ordinary lathes, drilling machines, milling machines, slotting machines and so on.

This is only the No. 1 workshop, in addition, there are No. 2 workshop, No. 3 workshop, etc., as well as welding center, casting center, heat treatment and surface treatment center, material research and smelting center, etc., in Li Tianfeng's heart, the blueprint is very grand.

The second batch of purchased machine tools, some of which are domestic machine tools, have arrived and are beginning to be installed and commissioned. Outside the No. 1 plant, several large trailers are parked there, on the trailers, huge packing boxes, inside are machine tools.

Several cranes and large forklifts are working, lifting these machines down and transporting them into the factory for installation.

The ground of the No. 1 plant is special, considering the stability, shock absorption and other factors, the plant is first a thick layer of gravel, and then a layer of about one meter thick concrete layer, the installation of machine tools, the entry and exit of large forklifts, has no impact on the processing.

On the one hand, the parts being processed are basically rough machining, or semi-finishing, the requirements are not so high, in addition, the quality of the plant is there, and the vibration of the ground will naturally not affect the processing.

Batches of blank parts are roughed here, semi-finished, and semi-finished products are formed, and then transported back to factory E, where the final finishing is completed, and finally qualified aero engine parts are formed.

After such a period of time, dozens of workers recruited in advance have passed the run-in period and adaptation period, and gradually stabilized.

However, Zhang Can didn't let himself ease up today, because there is a more difficult part to process here today, Zhang Can doesn't dare to make any mistakes, in addition, Li Tianfeng has already called over and will come to see it in person.

The shaft blank of the turboprop B engine is a big cylindrical one, which is nearly one meter high and weighs more than 100 kilograms when it is erected on the ground, which is very bulky.

The so-called propeller shaft is the shaft of the propeller of the turboprop engine, which is located at the front end of the engine, and is connected to the aircraft propeller when working, transmitting the huge power of the engine. Because it is the main force part, the propeller shaft has high requirements and is difficult to process, which is one of the key parts of the engine.

Of course, after processing into the last formal parts, the paddle shaft is much lighter, and it can be seen that the machining allowance of the blank is very huge, 5 or 60 percent of the material is to be cut, and some parts are even cut 7 or 80 percent of the material.

Next to a Shenyang CNC lathe, there are more than a dozen pieces of paddle shaft blanks, which have been used to use an ordinary lathe to have an end face datum and an outer circle datum, which can be processed by several cars.

The so-called processing datum is used in the machining process to align and locate the point, line, surface, etc., the end datum, and the outer circle datum are all datum planes, first process the datum plane, and then carry out the processing of the subsequent process, which is the basic process principle.

In addition, due to the large machining allowance of the paddle shaft, and the inside and outside have to be processed, the paddle shaft has to go through several counting processes, and on this Shenyang CNC lathe is the first counting process.

Next to the machine tool, there are already several people, in addition to Master Qian, who operates this machine tool, there is also a process technician, a tool supplier, etc.

To process such a big guy, and to process the deep inner hole of the paddle shaft, there are several non-standard tools, which are provided by this tool supplier.

Zhang Can is taking Li Tianfeng and walking here, while walking, Zhang Can is still introducing the preparation work before the processing of the paddle shaft, Li Tianfeng, while listening, nodding from time to time.

Before the formal processing of parts, it is often necessary to make a series of technical preparations and production preparations, which have obviously been completed and are now preparing to start the processing of formal parts.

The so-called technical preparation is a series of technical preparations, such as the preparation of processing technology regulations, the preparation of CNC machining procedures, etc., and the preparation of production refers to the preparation of tools, fixtures, machine tools, equipment, personnel, etc., these work is ready, and the parts can be processed smoothly.

Li Tianfeng is a very detail-oriented person, and he has been with Li Tianfeng for so many years, Zhang Can naturally knows Li Tianfeng's character, and is reporting his pre-processing preparations, and the report is more detailed.

"Let's take a look at the machining of the paddle shaft now." Li Tianfeng waved his hand and decided.

Zhang Can said: "Mr. Li, here, I estimate that the processing will start soon." ”

Li Tianfeng nodded, and Zhang Can walked towards the Shenyang CNC lathe, Li Tianfeng thought in his heart, the processing material allowance of the paddle shaft is very large, such parts processing, first of all, is to ensure the processing quality, and secondly, it is natural to ensure good processing efficiency under the premise of ensuring the processing quality of parts.

"Mr. Li, Director Zhang!"

Xiao He, a technician next to the Shenyang CNC machine tool, saw the two coming over and immediately greeted him warmly.

The rest of the people also smiled or nodded, which was regarded as greeting the two, among them, the knife supplier Liu Yi looked at Li Tianfeng again after greeting the two, obviously seeing Li Tianfeng for the first time, and thinking in his heart, who is this Li Zong?

Liu Yi is a knife dealer who is often outside, running in major factories in Songzhou, and he can be regarded as a somewhat knowledgeable figure, seeing that everyone is centered on Li Tianfeng, he couldn't help but quietly pull the technician Xiao He, and asked softly: "He Gong, who is this Mr. Li?" ”

"Mr. Li?" Technician Xiao He glanced at Li Tianfeng in awe, and was in awe, "Liu Gong, this is the top boss of our Tianfeng Technology Company, Li Tianfeng and Mr. Li." ”

The big boss at the top! Li Tianfeng!

Suddenly, Liu Yi understood, and there was an inexplicable excitement in his heart. He personally went to Tianfeng Technology Company to sell his CNC tools, and Liu Yi was optimistic about the potential of Tianfeng Technology.

After a lot of hard work, Liu Yicai had a good relationship with the technician Xiao He, and now he is communicating with Xiao He, Liu Yi hopes to catch up with Zhang Can, the technical director, but he didn't expect that the super boss Li Tianfeng appeared in front of him.

Excited, happy, Liu Yi glanced at Li Tianfeng, who was leaning over to look at the parts, Liu Yi couldn't help but squeeze forward hard, trying to get closer to Li Tianfeng.

Li Tianfeng looked at the situation of these paddle shaft blanks, knew it in his heart, and then looked at the first part that had been installed on the machine tool, nodded, thought about it and said, "Director Zhang, show me the program list." ”

The CNC machining program of the paddle shaft, Li Tianfeng did not look at it, now Li Tianfeng has a lot of things, it is impossible to personally check such a processing program, such a thing, Zhang Can should be responsible.

After taking the program sheet that Zhang Can took, Li Tianfeng looked at it a little, and basically knew in his heart that the processing program was compiled by the technician He Lin, who was the technician Xiao He, in his early thirties, with the title of engineer, and now one of the supervising technicians in the No. 1 workshop.

The proofreading of the program is Zhang Can, which is Zhang Can's checks and guidance, because Zhang Can used to work under Li Tianfeng for a period of time when he was in Factory E, and he has more or less obtained a few "true biography" of Li Tianfeng, and this program has a little look, Li Tianfeng nodded with satisfaction.

Take a look at the set of CNC tools that are processed, they are basically provided by tool suppliers, and the quality seems to be good, Li Tianfeng also knows that the strength of this tool supplier is first-class in China, and it should have some strength.

"Mr. Li, this is the tool provided by Liu Gong, just to test it when we are processing the paddle shaft." He Lin explained beside him.

Li Tianfeng also noticed it, and when he saw Liu Yi wearing the knife merchant's overalls, Li Tianfeng nodded at Liu Yi formulaically, and then said: "Most of the knives should be fine, but I don't think the design of that deep-hole knife is suitable." ”

……

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