Chapter 198 (1/2)
”I've thought about it carefully these days. There was no big deviation in our original strategy, so we have to continue to work on CNC lathes, not only to do it, but also to make the best. What is the best? The lathe with stepless speed change in high, middle and low gears is not the best. We must produce the CNC lathe with stepless speed change. Only in this way can we regain a firm foothold in the chaotic CNC machine tool market! ”
Yun Fei finished and hit his hand heavily on the conference table.
The participants, hearing Yun Fei's words, all looked embarrassed. In particular, savavsky, the head of the technology department, was even more embarrassed.
Simple CNC lathe is easy to do. As long as the ordinary screw rod and polished rod are replaced with ball screw rod, and then the tool holder connected with special high-precision toothed disc is installed, and the CNC system is installed, a simple CNC lathe is completed.
But the CNC lathe with stepless speed change in three gears and a full range of stepless speed change is not such a simple problem. Except that the machine bed can barely retain the bed structure of the ordinary lathe, the gears in the whole headstock have to be replaced. This is not only a matter that can be solved by changing gears, but also has all kinds of technical conditions and technical reserves. Otherwise, the Soviet Union would not have failed to produce high-precision CNC lathes for so many years, and could only produce the lowest level simple CNC lathes.
”We should not only increase the research on high-precision CNC lathes, but also speed up the research on CNC milling machines and even machining centers. We must launch our products within half a year, otherwise, the CNC lathe produced by our company can only fall into a protracted price war with other CNC machine tool manufacturers. They have the national financial blood transfusion. We don't. If we can't launch high-precision CNC machine tools within half a year, our Jiuyi heavy industry can only go bankrupt or be acquired. ”
Yun Fei said finally, incomparable loss. Today's Jiuyi heavy industry is not only his whole wealth, but also carries all his dreams. In order to produce high-precision multi axis CNC machine tools in China, we must accumulate experience and develop step by step from the lowest two axis CNC lathe and the entry-level three-axis CNC milling machine.
As long as a three-axis CNC milling machine is produced, it will become a machining center only by adding a tool magazine that can automatically change the tool in the CNC milling machine. Although it is very difficult for other CNC machine tool manufacturers in China to install a tool magazine, it is not very difficult for Yunfei from later generations.
”Why, old SA, what's the problem?” Yunfei saw that the eyebrows on both sides of savafsky were about to squeeze together, and asked him with a gloomy face.
”Boss, I think our CNC milling machine can't be produced in half a year...” through translation, savafsky also knew the problems facing the company.
CNC milling machines have started theoretical research and design since they first came to Chengdu and were still in the hotel, but up to now, there is no way to solve the accuracy control of z-axis movement of the most basic machining center.
People who know CNC milling machine or machining center know that the most key technology of CNC milling machine is on the z-axis that can move up and down. Positioning accuracy is controlled by CNC system and ball screw.
For ordinary milling machines, except for the rotation function of the spindle, all the movement of the spindle is on the workbench. However, CNC milling machines cannot do this. High precision CNC machine tools, especially when positioning quickly, have a self weight of more than one ton on the worktable. If you add hundreds of kilograms of parts or no parts, it will also cause great damage to the transmission ball screw.
The emergence of NC milling machine itself is to process some complex parts. But where is there so much processing of large quantities of complex parts in the world? Therefore, in the use of machining center, the powerful machining ability and machining efficiency of machining center in the milling of large quantities of parts were discovered shortly after the birth of NC milling machine.
Ball screw can be like ordinary transmission screw, which is far from being compared in terms of thread width, and can not drive the worktable in the ton to move quickly in the vertical direction.
Therefore, both CNC milling machines and machining centers can only use the worktable to move back and forth, and the spindle with very light weight can move up and down.
”Why? Aren't you from the Institute of machinery? Don't tell me that a few months have passed and the design of NC milling machine has not been completed yet! ” Yun Fei is really angry.
In the past, when reading online articles, countless piercers and reborn people were calling the wind and rain and catching up with each other in their world. But I didn't realize that in this world, I am confident that I can do a lot. Even if I can't catch up with the United States, it will take at least ten or twenty years on CNC machine tools, so that at least domestic machine tool manufacturers can provide some high-end CNC machine tools.
This has just started and will face the fate of bankruptcy.