When NC apprentices have a task system

Chapter 217 The final development direction of CNC?
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Just as everyone was concentrating on watching the big screen in the arena, the voice on the radio rang again.

"Every contestant, the second assessment part of this finals is to answer a question, and then choose the place to advance to the final round according to the examiner's scoring criteria!!!"

"The question is as follows: The final development direction of CNC??? The time limit for this round of assessment is 30 minutes!!!"

After the words fell, everyone showed suspicious expressions! ! !
Even the contestants represented by the three major industrial companies are also puzzled? ? ?

According to the usual assessment arrangement for the finals, there are always three items:
The first round, the assessment of programming design ability! ! !

The second round, practical experience assessment! ! !

In the last round, the champion will be determined based on the comprehensive scores of the first two rounds! ! !

But this time the finals seemed to be a little different, and theoretical knowledge was also assessed? ? ?

Get a handjob? ? ?
In fact, it is also inexplicable that Shangguan Qiuyue, Ren Boan, and Han Guorong came to participate in the finals of the China National CNC Competition? ? ?
With their technical level, there is no need to come here to join in the fun? ? ?
It's not that they look down on domestic CNC elites, but... This is like recommending a top student to a prestigious university, you let him take the college entrance examination? ? ?
This is not taking off your pants and farting, is it superfluous? ? ?
You must know that every talent who can successfully enter the three major industrial companies is a super genius who is one in a million! ! !
As for the championship honor of the National CNC Competition? ? ?
This level of honorary title is dispensable for them.

So this is also the reason why the three feel strange, but as J people, this is their duty! ! !
Except for the contestants represented by the three major industrial companies, the others couldn't figure out why the organizer chose to assess theoretical knowledge this year? ? ?

Of course, for Xu Yang, a newbie, there is nothing wrong with him. Anyway, this is his first time participating in the finals. As for the organizer, what problem did it have? ? ?
This is not something he needs to think about! ! !

But this test question:

The final development direction of CNC? ? ?

This question is a bit interesting! ! !

The more this is the case, the more Xu Yang feels that the championship of the Huaxia National CNC Competition is of great significance! ! !

Some clues can be seen from the second assessment, maybe this is an external signal intentionally released by those mysterious organizations? ? ?
As for why Xu Yang guessed like this? ? ?

In fact, the reason is not difficult to understand. In Xu Yang's view, once the professional level has entered the CNC elite of the National Chief Engineer, it is no longer meaningful to assess some molds and product design! ! !

Such high-end talents should instead study the future direction of numerical control, such as black technology? ? ?

Most of the champions of each competition have entered the three major industrial companies, or other mysterious organizations? ? ?
Year after year, if it is just blindly assessing programming? ? ?

Logically speaking, such a selection method is not very meaningful, it can be cultivated from a young age! ! !

This is not only faster, but also can shape more mechanical talents! ! !

In fact, Xu Yang has already thought about this problem immersively since he participated in the Huaxia National CNC Competition, and finally came to the conclusion:

Every CNC competition is actually looking for a perfect "son of machinery!!!" for the future development direction of CNC

The reason is simple, the Blue Star League has never been short of CNC geniuses, but the CNC field has encountered an unbreakable shackle! ! !

That is the bottleneck! ! !
Xu Yang also read a lot of papers by well-known CNC super masters at home and abroad on the Internet! ! !

Among them, they envision the future development direction of the CNC field as follows:

1. New trends in high-speed and high-precision machining technology and equipment
Efficiency and quality are the main body of advanced manufacturing technology.High-speed and high-finish machining technology can greatly improve efficiency, improve product quality and grade, shorten production cycle and improve market competitiveness.

Judging from the current situation, the feed speed of high-speed machining centers can reach 80m/min, or even higher, and the dry running speed can reach about 100m/min. min, the acceleration reaches 60g, and the spindle speed has reached 100r/min.

加工一薄壁飞机零件，有的只用了不到30min。而同样的零件在一般高速铣床加工需3h，在普通铣床加工需8h；双主轴车床的主轴速度及加速度分别达12*1000r/mm和1g。

In terms of machining accuracy, the machining accuracy of ordinary CNC machine tools has increased from 10 μm to 5 μm, and the precision machining center has increased from 3 to 5 μm to 1 to 1.5 μm, and the ultra-precision machining accuracy has begun to enter the nanometer level (0.01 μm) .

In terms of reliability, the MTBF value of foreign CNC devices has reached more than 6h, and the MTBF value of servo systems has reached more than 000h, showing very high reliability.In order to achieve high-speed and high-precision machining, supporting functional components such as electric spindles and linear motors have been rapidly developed, and their application fields have been further expanded.

2. Rapid development of five-axis linkage processing and compound processing machine tools

Using 5-axis linkage to process three-dimensional curved surface parts, the best geometry of the tool can be used for cutting, which not only has a high finish, but also greatly improves the efficiency.It is generally believed that the efficiency of one 1-axis linkage machine tool can be equal to two 5-axis linkage machine tools, especially when using cubic boron nitride and other superhard material milling cutters for high-speed milling of hardened steel parts, 2-axis linkage processing can be compared with 3-axis linkage Processing to play a higher efficiency.However, in the past, due to reasons such as the 5-axis linkage CNC system and the complex structure of the host machine, its price was several times higher than that of the 3-axis linkage CNC machine tool. In addition, the programming technology was difficult, which restricted the development of 5-axis linkage machine tools.

At present, due to the emergence of the electric spindle, the structure of the composite spindle head for 5-axis simultaneous machining is greatly simplified, its manufacturing difficulty and cost are greatly reduced, and the price gap of the CNC system is narrowed.Therefore, the development of composite spindle head type 5-axis linkage machine tools and composite processing machine tools (including 5-sided processing machine tools) is promoted.At the EMO2001 exhibition, Nishidao Kunki's 5-sided machining machine tool adopts a composite spindle head, which can realize machining on 4 vertical planes and any angle, so that 5-sided machining and 5-axis machining can be realized on the same machine tool. It can process inclined surfaces and reverse tapered holes.

For example, some series of machining centers can perform 5-side processing and 5-axis simultaneous processing in one clamping, and can be controlled directly or indirectly by CNC system or CAD/CAM.

3. Intelligence, openness, and networking have become the main trends in the development of contemporary CNC systems

The CNC equipment in the new era will be a system with a certain degree of intelligence. The content of intelligence includes all aspects of the CNC system: in order to pursue the intelligence of processing efficiency and processing quality, such as adaptive control of the processing process, automatic process parameters Generation; in order to improve the driving performance and use the intelligence of convenient connection, such as feed-forward control, adaptive calculation of motor parameters, automatic identification of loads, automatic selection of models, self-tuning, etc.; simplify programming and simplify operations. Advanced automatic programming, intelligent man-machine interface, etc.

Networked CNC equipment is a new highlight of the internationally famous machine tool exposition in the past two years.The networking of CNC equipment will greatly meet the needs of production lines, manufacturing systems, and manufacturing companies for information integration, and is also the basic unit for realizing new manufacturing models such as agile manufacturing, virtual enterprises, and global manufacturing.

Some well-known CNC machine tool and CNC system manufacturing companies at home and abroad have launched related new concepts and prototypes in the past two years, which also reflects the trend of CNC machine tool processing to the direction of network development.

　Rejuvenating the country through industry, CNC technology!
　　
　
(End of this chapter)