"The tool system is also on the guide rail, which can move laterally along the guide rail, and the tool can also move longitudinally. After start-up, the spindle drives the workpiece to rotate at high speed, and the tool can be moved transversely and longitudinally (i.e. feeding) to machine the workpiece into the desired shape such as cylindrical, tapered, convex shoulder cylinder, etc. Now you have a lathe, you can start work, but slowly, what is the accuracy of your equipment, you can't take a product to measure it and say that the accuracy is like this. Your machine is used for mass production, and there must be a theoretical indicator. You are the user of the lathe, it doesn't matter if you don't understand this, as long as you make your product. But a machine tool factory, a country, if it can't even do this, what is the ability to upgrade the industry? Don't forget, other industries need a variety of machine tools, strange, new types of emerge at any time, how can you meet the requirements without the theoretical knowledge of machine tools? Among the components of the lathe just mentioned, they all affect the machining accuracy of the lathe. ”

Chongzhen Emperor Zhu You listened to it as if he was fascinated, he suddenly felt enlightened, there were a lot of things that he didn't understand in ancient times, in modern times, although he worked very hard, he didn't have to practice machine tools, but there was no way to be like Professor Gu Luo Tu for a while, and he came out with a very delicate watch parts, which should be clamped up with tweezers and seen with a microscope! What kind of craft is this?

Chongzhen Emperor Zhu Youzhen knew that the motor is the power source of the machine tool, if the motor is not running smoothly, then the relative speed of the tool and the processed parts has changed, and the force between the two has been changing. The deformation of the two is also changing. Naturally, the machining accuracy has also decreased. However, ordinary machine tools are not strict in this regard. In the past, the motor was also said to have less impact than other aspects, but this problem is more obvious in ultra-high-precision machine tools.

If the bed vibrates during work, it will inevitably affect the accuracy. The bed design of a good machine tool, the middle of the force analysis, vibration analysis, etc., has always been the world of masters. If it is deformed due to stress conduction, the accuracy will naturally decrease, and when casting and machining the bed. Stress is bound to arise. Therefore, in the past, machine tool factories would put a large number of beds in the open air, let the wind and rain blow, and rely on nature and time to eliminate stress. Now there is a stress detection equipment, which can manually relieve stress, but the general effect is still not as good as natural. Now some machine tool factories do a good job of machine tools through guò recycling old machine tools, using the old bed to make machine tools, this old machine tool bed is also a very hot market.

The machining accuracy of the machine bed will also greatly affect the accuracy of the machine tool (not only for casting, but also for the machine itself to be machined). The machine bed is also processed by large machine tools.

Professor Gu Luotu saw that Jian Xunlou looked carefully and listened carefully. It's also very gratifying that he is not a good teacher. In fact, if it weren't for the relationship of the Lan family, he wouldn't have taught Xun Lou! At the level of Professor Gu Luotu, such assets, and at such an age, he has long lost his enthusiasm for teaching students, and his usual classes are completely a disguise.

"The gearbox general motor can not directly drive the spindle to run, and the gearbox plays the role of changing speed. The gearbox and the spindle are meshed with guò gears. This aspect has always been one of the focuses of machine tool design, and accuracy has also been greatly affected in this regard. The gearing is uneven and there is considerable lateral force exerted on the spindle. The unsmoothness of the gear transmission can be reduced by gear processing and installation, which is easy to say, but it is actually very difficult. The gears are designed to be graded, and good gears are quite expensive, with low noise and smooth operation. As for the lateral force transmitted to the spindle, it will lead to the lateral deformation of the spindle! Analysis and calculation of the force of the rod (of course, this is a simplified model), so that the rotation of the spindle will be eccentric, and the cross-section of the machined thing is no longer a circle, but an ellipse. Professor Gu Luotu took the small gear that had just been processed and explained to the inspection building.

Chongzhen Emperor Zhu Youzhen nodded, "The processing of gears is realized by machine tools, and without high-precision machine tools, there will naturally be no high-precision gears." In the field of machinery, gear transmission is the most extensive and important transmission method. In order to be military, the dynasty also specially bypassed Batumi and imported a batch of equipment to make gears. In the familiar automotive field, there is nothing false about who has a high level of gearbox and who has a low level. The installation of gears, good workmanship, and experienced mechanics are all essential. Moreover, the accuracy of the machine bed directly affects the engagement between the gearbox and the spindle. In the field of gear research, all kinds of gears have been proposed (there was a course on special gears back then, which was full of theories and calculation formulas, which made people dizzy, and what was even more unbearable was that each part indicated that the effect should be actually verified), and all kinds of analysis books were to the point of being full of sweat, until they were still researching new gears. ”

Professor Gu Luotu was overjoyed, he didn't expect that Jianxunlou was so young, but his knowledge was very rich, he couldn't imagine that Jianxunlou's thirst for learning mechanical manufacturing in the past six months had reached the point of forgetting to sleep and eat! "Okay, good wow, baby, people inspect Xunlou, this is called hard work, where are you still introducing it to others?"

Yan Ting's pink face flushed slightly, and then smiled embarrassedly, "You know it so well, then you can let Daddy give you a model, and you can go and try it on the machine." ”

This time it was Chongzhen Emperor Zhu Youzhen's turn to blush and shake his head, "I can't make such a small gear, I don't have such technology." ”

Professor Gu Luotu nodded, and asked Jian Xun Lou to make a gear that was exactly the same as him, but the accuracy was much worse, and when Yan Ting got on the machine to do it, the accuracy was a little worse than that of Jian Xun Lou.

Emperor Chongzhen Zhu Youzhen now clearly knew that if he didn't have enough knowledge, he would not be able to do anything just by transporting the equipment back to ancient times! He is not so two, he will think that by transporting 500 catties of things to Daming every half month, he can bring some radical changes to Daming! Not to mention that he can't get bullets and munitions, and even if he can, how much can he transport in a year? A drop in the bucket, in vain! Only if you have a solid grasp of the technology, is the king! (To be continued......)