Siheyuan: Starting from a fitter

Chapter 332 Pre-research of 9-axis 5-linkage machining center
Generally speaking, a five-axis five-linkage machining center can achieve all-round processing of all aspects of the workpiece.

However, the surface of the workpiece clamped on the workbench cannot be processed. Some special workpieces need to process this surface. In this case, the workpiece needs to be removed from the clamping position, turned over and re-clamped.

In order to ensure the accuracy of repeated clamping, it is necessary to add an additional mechanical device to ensure this "positioning error of repeated clamping".One more mechanical device means more axes of motion.

Generally, the extra axes are auxiliary axes and will not participate in cutting motion, so this kind of machine tool with more than five axes is called "X-axis five-linkage machine tool" (X is greater than 5), for example, 7-axis and 5-linkage Machine tools, 9-axis 5-linkage machine tools
9轴5联动机床是一种具有多个轴向和联动功能的先进数控机床。如3个线性轴、3个旋转轴和3个模具轴，能够进行复杂的多轴加工操作。

The 9-axis 5-linkage machine tool has multiple axial linkage functions, and can perform more complex process processing, such as five-axis linkage, tilting processing, etc., which overcomes the difficulties that traditional machine tools cannot complete.

It can be used in a variety of processing techniques, such as milling, cutting, boring, grinding, etc., to meet the needs of different workpiece processing.

Through linkage control, multi-axis simultaneous processing is realized, which greatly improves production efficiency and processing efficiency.

It is widely used in aerospace, automobile manufacturing, mold engineering, medical equipment and other fields, and is suitable for processing various complex-shaped workpieces.

Therefore, 9-axis sounds complicated. In fact, compared to 5-axis linkage, it does not increase the technical difficulty much. It just adds a symmetrical fixture to be able to process the back of the fixture.

The most difficult part is the 5-axis linkage, which is very simple for laboratories who have accumulated experience in 4-axis linkage.

No matter how many axes there are, the core is the automation control module.

The automation module control circuit has two parts. One part is the real-time control CPU KT32F202M, which is used to achieve multi-axis linkage.The other part is the i1 CPU, which realizes human-computer interaction and issues instructions to the KT32F202M.

When developing 4-axis linkage machine tools, future multi-axis requirements were taken into consideration, so the control module adopts a plug-in platform design.It consists of power board, i1 main CPU board, linkage CPU board, driver board and backplane.

No matter how many axis linkage machine tools are developed in the future, the power board, i1 main CPU board, linkage CPU board and backplane will remain the same, with just a few more drive boards added.

Each driver board has 6 channels of drive and acquisition, so for 9-axis applications, the number of drives can be increased to 2.

As long as the program of the i1 main CPU board is upgraded, the needs of 9-axis applications can be met.

The platform design concept should be the latest design concept. In order to maintain its advancement, this part has not been patented.

When negotiating with the three manufacturers that purchased 3-axis machine tool technology before, Zhao Ting had explained that if the control module was provided by Longhua, Longhua would provide subsequent version upgrades free of charge.

If you produce it yourself, you will need to charge a version fee every time you upgrade the version.

The upgrade of the software version mainly involves regularly collecting usage problem records, continuously optimizing the control algorithm, and adding processing routines for different devices.

This is similar to the continuous upgrading of Windows systems in later generations.

When the three manufacturers listened to Zhao Ting's introduction, they all chose to purchase control modules.

In just one month, Li Guocheng manually completed a 9-axis, 5-linkage small functional machine.

If the design of this functional machine meets expectations, the device processing of the gyroscope and acceleration chip can be upgraded in the future.

With the addition of a laser welding torch and a special manipulator, precision operations such as automatic bonding and welding of the above-mentioned chips can be completed, which can improve product production efficiency and yield.

The entire functional machine has a volume of 1200*1000*600mm and is placed directly on the test bench.

Li Guocheng checked all the installation lines and interfaces, and after making sure they were correct, he confidently pressed the start button.

After a week of testing, various processing modes were tested, and the results met the design requirements.

Li Guocheng loaded a routine for a crankshaft with a complex curved surface, put a piece of steel into the feed port, and after more than an hour, a perfect crankshaft appeared in Li Guocheng's hands.

The processing accuracy is no worse than his manual processing, but the processing efficiency is only less than one-tenth of Li Guocheng's.

Looking at the functional machine on the desktop, he was filled with pride. Several visits to Sam Country allowed him to 'pick up' many of the latest technologies and material formulas.

Standing on the shoulders of giants, Xiangjiang Longhua High Materials Technology Branch has basically digested all material formulas.With the assistance of Li Guocheng, the materials research laboratory led by Zhou Xiaojuan has reached a higher level.

Especially in tool steel and bearing steel, the performance parameters are far ahead of those in the West.

Now the main business of the steel rolling mill is the production of special steel. Although the formula delivered by Li Guocheng has long been obtained, the output has not been high and the cost has remained high.

After Li Guocheng returned, as an expert, he stayed in the steel rolling mill for more than a month, constantly optimizing the refining process. With the help of his mind power, the output was slowly increased.

After a month, when the process and process were stabilized, the yield of special steel increased to 89%, and the output increased explosively.

Therefore, when participating in the Longhua 4-axis machine tool technology transfer negotiation, the steel rolling mill was the first to stand up and support it.

From the perspective of the leadership of the steel rolling mill, it is just to make good friends with Longhua Technology. In fact, in half a year, they will find that they are the ones who have taken advantage of it.

Li Guocheng has informed Zhao Ting that if any factory purchases technology in the future, the transfer fee will be directly increased to 5000W.

The reason is that the previous cost accounting was inaccurate and the R&D investment was far greater than the data approved at the time.And in order to continue to develop 5-axis linkage machining centers, sufficient funds must be accumulated.

It also claims that machine tool research in Longhua Laboratory has stalled and it is necessary to accumulate sufficient R&D funds.

This operation did not scare the factories that did not cooperate, but instead blew up Representative Luo.

"Lao Li, this is a big joke. No money? Will Longhua have no money?!"

"Haha, Longhua's stall is too big, and the exhibition hall is a gold-swallowing beast. In order to ensure the healthy development of the main business, we have to reduce investment in other businesses."

"Brother, don't worry, the first payment of 2000W is guaranteed to be received within one week. You can't stop our project."

Representative Luo was sweating profusely and offered to pay for the research and development expenses.

Li Guocheng did not expect such an unexpected gain, "Lao Luo, don't worry, as soon as the funds are in place, we will start research immediately."

"I promise to get the money within one week, Lao Li, look, should we start now?"

"You have said so. This face must be given. Don't worry, I will ask them to start research and development soon."

After getting the desired result, Representative Luo left Building 1 with satisfaction.

On the way back to Building 3, after he calmed down, he felt that Li Guocheng agreed too quickly and too easily, and a feeling of being calculated came over him.

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(End of this chapter)