After solving the second child's matter, Fu Xin began to return to his normal working state, reviewing various documents, signing, holding meetings, and making decisions every day, the days are relatively monotonous, but the days will always pass so quickly in peace.

When Fu Xin came to Huaxing Machine Tool Factory to check the situation, he happened to catch up with Guo Changfan and several workers and technicians to test a large horizontal milling machine that had just been assembled. This large horizontal milling machine is sold to a country in East Africa, the source of the order, naturally is the Frankfurt International Machinery and Equipment Fair in Germany, look at Guo Changfan's smiling look, Fu Xin knows that this thing has been done, and the test results are satisfactory.

Milling machine is a widely used machine tool, in which the plane can be processed, that is, horizontal and vertical planes, grooves, namely keyway, T-groove, dovetail groove, etc., tooth parts, that is, gears, spline shafts, sprockets, spiral surfaces, that is, threads and spiral grooves, and various curved surfaces.

In addition, it can also be used for machining the surface of the rotary body, internal holes, and cutting work. When the milling machine is working, the workpiece is mounted on the workbench or the indexing head and other accessories, and the milling cutter rotates as the main movement, supplemented by the feed movement of the workbench or the milling head, and the workpiece can obtain the required machining surface.

Due to the multi-edge interrupted cut, the productivity of the milling machine is high. In simple terms, a milling machine is a machine tool that can mill, drill and boring a workpiece.

Guo Changfan The horizontal milling machine they are testing is more than three meters high, and the workbench is three meters long and two meters wide, which is a big guy.

This model of large horizontal milling machine is the traditional product of most machine tool enterprises in China in the past few decades. I don't know how many mechanical enterprises are equipped.

But in recent years, under the squeeze of imported CNC milling machines. The horizontal milling machines of most machine tool companies in China have gradually begun to be unsalable. It's something that can't be helped.

The milling machine requires that the spindle sleeve can be manually micro-fed and equipped with a limiting device. The milling head can be rotated and adjusted 45 degrees clockwise;

It is required that the workbench can be manually fed and lifted vertically in the longitudinal and transverse directions, and at the same time, the longitudinal and transverse can realize motorized fast forwarding, motorized feeding and vertical motorized lifting;

It is required to use a 1,200 mm extended slider, a 1,500 mm extended worktable, and the longitudinal stroke of the workbench is required to reach 1,000 mm, which requires a long stroke and stronger stability;

It is required that the main drive and feed are geared and variable speed mechanism, with 12 different speeds and a wide range of speed regulation;

The spindle bearing is required to use tapered roller bearing, which has a strong bearing capacity. And the use of energy consumption braking, with large braking torque, rapid stopping, reliable braking;

It is required to use rectangular guide rails with good stability, and the workbench and guide rails are required to be quenched by ultrasound to have greater strength.

The machine tool is required to have good rigidity and be able to carry heavy load cutting;

The spindle motor is required to have high power and a wide range of variable speeds to give full play to the efficiency of the tool. High-speed cutting.

It is required that vanadium titanium wear-resistant cast iron is used for easy-to-wear castings, and high-quality alloy steel is used for important parts, which is stable and durable.

The machine tool is required to have a complete lubrication system.

It is required that the horizontal milling machine can be configured with a digital display device according to user needs, and the product is easy to operate and reliable in performance. It can be used to process various planes, inclined planes, grooves, etc. with various cylindrical milling cutters, disc milling cutters, angle milling cutters, profile milling cutters and face milling cutters.

But these conditions. Most of the horizontal milling machines produced by most machine tool enterprises in China can not meet all the above conditions, and even some conditions, all machine tool enterprises in China can not achieve. If it weren't for the fact that this horizontal milling machine was exported to a poor country in East Africa, this product. It's really hard to sell!

What Fu Xin sees now is actually a horizontal milling machine produced after transformation and optimization. This is Huaxing received a notice from the superiors, the product must be quality and quantity, if possible, try to do the best, so that foreign customers are satisfied.

This kind of notice, naturally can not be ignored, not to mention that Fu Xin has paid great attention to the quality of the product, and now this horizontal milling machine is the technology obtained by Huaxing from other enterprises, and it is produced after transformation and optimization. In terms of machine tool technology, Fu Xinna is really painstakingly planning the layout very early, Huaxing now reserves a lot of machine tool technology, and now it is just in the export of machine tools to be applied on the platform.

According to the production specifications of the machine tool, the machine tool must be inspected after production, the inspection items of the horizontal milling machine are roughly the same as those of other metal cutting machine tools, and the special standards include accuracy and performance, which can be roughly summarized as: the accuracy of the hole or mandrel of the installation tool, the accuracy of the tool holder, ram or rocker arm table, the mutual position accuracy of the installation tool and the workbench, the machining accuracy of the specified workpiece, etc.

These test items are commonplace for most machine tool factories in China. But for Huaxing Machine Tool Factory, it is relatively unfamiliar. There is still a threshold in the machine tool industry, and this threshold is these various norms. Fu Xin borrowed Guo Changfan's Jinchuan Agricultural Machinery Factory as a platform to build a machine tool accessories company, but he did not dare to directly enter the field of machine tools, because he could not cross this threshold.

The benefits of the planned economy are reflected here, as it can highly and effectively concentrate manpower, material resources, and talents to carry out key construction, concentrate limited funds to develop key industries, and the directive plan is easy to implement because of the leadership of the centralized system, and ensure the establishment of a relatively rational national economic system in accordance with the overall strategy of realizing the national economic development according to the expected plan objectives.

Now this Huaxing machine tool factory to produce machine tools for export, Huaxing machine tool factory can not produce alone, turn to the above, the above decisive is to the foreign exchange of these two words machine related to the very important, soon the leadership of the above has instructions down, requiring Xijiang heavy machine tool factory and Huaxing machine tool factory to cooperate, and strive to complete the task of earning foreign exchange well and quickly, so that the leadership of Xijiang heavy machine tool factory even if they are unwilling, to keep the technology secret, but also have to pinch their noses.

What's more, such a good thing as exporting foreign exchange, how can the leaders of Xijiang Heavy Machine Tool Factory not participate, this is all political achievements, before it was just that Huaxing Machine Tool Factory was unknown, and it was unwilling to contact it because of face. Cooperation is a natural thing.

Guo Changfan had just stayed with the technicians of the Xijiang Heavy Machine Tool Factory, and was directing several workers to fix the experimental workpieces on the workbench. saw Fu Xin come in and was reminded by the people around him. He immediately raised his head and shouted affectionately: "Mr. Fu, you came just in time, we are doing the last test, if this test is qualified, we will cut the ribbon." ”

Fu Xin stepped forward to shake hands with Guo Changfan, but Guo Changfan avoided him: "Don't, I have oil in one hand." ”

Fu Xin smiled: "What, old squad leader." Why are you still doing it yourself? ”

Guo Changfan said: "I love to do this kind of work. Seeing a machine tool born from under my hands like this, the sense of accomplishment in my heart is very high! You wait for me for a while, and I'll be fine right away. ”

Fu Xin stepped aside and saw an acquaintance, he had a relationship before, Guo Changfan's right-hand man, Dai Zhenjiang, stood beside Dai Zhenjiang and asked, "Old Dai." How's it going, did the test go well? ”

Dai Zhenjiang nodded happily and said, "It's very smooth!" The technical strength of Xijiang Heavy Machine Tool Factory is really unspeakable, and the quality of workers is also high. However, our people are not ashamed. Li Feng followed to do the assembly, and even the masters of Xijiang Heavy Machine Tool Factory praised him for his great understanding. ”

Li Feng is the son of Li Dequan, the head of Yijun Township, after this guy came out with Fu Xin. didn't have a choice with his sister and entered the management of Huaxing. Instead, he asked to come to this Huaxing Machine Tool Factory to be an ordinary apprentice, but he didn't expect it. At this time, this guy was able to participate in the transformation of the machine tool, and Fu Xin also secretly admired this guy's high understanding, which was simply born for the machine tool.

"Li Feng?" Fu Xin frowned and asked, "If I'm not mistaken, he was brought into the factory by me, the son of the old villager of Yijun Township, and he has only been in the factory for a long time!" ”

Dai Zhenjiang sighed and said: "This kid is now a teacher, and he knows everything, this time he really showed his face to our Huaxing Machine Tool Factory." ”

"All in one?" Fu Xin was puzzled.

"Yes, Mr. Fu, don't you know that this kid turned out to be the driver and repairman of the only tractor in their township? When he was at home, he groped alone, and basically ate the technology on the tractor in their township, which is really amazing, with understanding, this child is simply born of mechanical equipment. Dai Zhenjiang couldn't help but praise again and again.

"That's it!" Fu Xin said with such an expression, to be honest, he really didn't understand what Li Feng did before, but he thought of Li Dequan's righteousness, as well as his excellent level of elementary Chinese chemistry, and arranged him to be an apprentice according to his own requirements.

"And that's not all!" Dai Zhenjiang continued: "When this kid first entered the factory, everyone just treated him as an ordinary apprentice and asked him to do some auxiliary work. At the beginning, you also arranged it like this, Li Feng didn't mind, he did whatever he asked him to do, but when he was free, he always followed the other workers and masters to observe their every move, and confirmed it in his own independent thinking.

Assembling the machine tool is a fine work, each part of the machine tool is allowed to have a certain tolerance when processing, when they are assembled together, the tolerance on each part accumulates, it will affect the geometric accuracy of the machine tool.

Skilled assemblers need to constantly measure the mutual position of the parts during the assembly process, and if they are high, they need to shovel off a little with a scraper; If it's low, add a small spacer. The specific addition and subtraction depends entirely on the experience of each individual.

In the process of assembling this large horizontal milling machine, we always have a little error several times can not be eliminated, it is a headache, at this time Li Feng Mao recommended himself, volunteered to give full play to the results of his usual thinking, several times even corrected the mistakes of the masters and technicians of Xijiang Heavy Machine Tool Factory, the result is to win the praise of everyone, for our Huaxing Machine Tool Factory long face! ”

While he was talking, the horizontal milling machine over there had already begun to work. The milling cutter rotates at high speed, reaching deep into the workpiece and bringing out beautiful chips. The surrounding technicians and workers nervously observed the work of this horizontal milling machine, evaluating its vibration, noise and other indicators, and at this moment, clicked...... (To be continued......)