The workers of Liaobei Mechanical Engineering Construction Group are very confident that they can do "service work" well, but Liu Lang doesn't think so. Their level is still far behind, and they must pay close attention to training if they want to manufacture the parts Liu Lang needs.
This is easy to handle. In the first half of this year, Liu Lang built a training center in Fucheng, specifically for employee training. Not only his own employees, but also employees from other companies. Now it comes in handy. The first batch of training students
There are more than two hundred people, all of whom are the best employees of Liaobei Mechanical Engineering Group. They are at least level four workers, and the highest are level six workers. There are also more than a dozen people who have intermediate professional titles. It can be said that they are all elites.
Norinco also attaches great importance to it and sends college students who just joined the company last year as lecturers to train them...
Well, when a young man who has just graduated a year ago and is just 23 years old stands in front of a group of workers in their 30s and 40s with at least more than ten years of work experience, even though this is a college student, the workers below
Still very unhappy.
The employees of your Norinco Group are amazing. We really can’t compare with them, let alone Liu Lang. According to what is said in the storytelling, Liu Lang is the martial saint of today. He is too high and insurmountable, and his disciples are also the same.
Each of the top 100 people in the world is unique in his own way. For example, Ma Ming, whose status in the world is ranked among the top 30.
But who is this student? He just joined Norinco last year and his hair has not even grown yet. "Martial Saint" is very powerful, but no matter how powerful he is, can he teach a master in one year? Besides, we are not cowards, we are the best in the world.
Masters are not considered masters, but second-rate masters are fine. Could it be that we second-rate masters can’t compare to a young apprentice who has just studied for a year? This is obviously looking down on us.
There is currently a popular work called "White Eyebrow Hero" in storytelling. The workers like to listen to it very much. They regard Liu Lang as the Wu Sage in it, and then rank them in order. In their eyes, the child in front of them is just a member of the Wu Sage's house.
The level of a child is so far behind that he may not even be able to compare with Fang Shuan.
Although they were angry, these workers also knew that the other party was not easy to mess with, and they still had to give them face because of the support of the "Martial Saint" behind them, but their faces were very ugly.
The "little boy" looked at everyone and seemed a little unhappy.
"Masters, my name is Wang Liang, and I am the instructor of this training event. I and another instructor will train you in the next week."
Wang Liang introduced himself first, but the following people did not say anything, and the scene was a bit quiet.
"This is a bunch of rude people. Why am I so unlucky? I might as well come tomorrow! It's so unlucky...!"
At this time, Wang Liang was filled with resentment in his heart.
He was one of the first batch of college students to join the company last year. He has improved rapidly in more than a year and has now become the leader of that group of students. The company is indeed serious about sending him to train students, but Wang Liang himself does not like it.
! If everything goes well at ordinary times, he will resolutely carry out the tasks assigned by the company, but these two days Liu Lang personally taught everyone the knowledge of CNC machine tools. How rare is this opportunity? How could I miss it?
Wang Liang became angry when he thought about this, but there was nothing he could do about it. Nowadays, these workers all looked gloomy, and he even felt that their quality was too poor. How could he be in a good mood?
There is no other way, work must continue, just bear with it!
Wang Liang didn't say much and walked to the podium. This podium was actually an operating table with such tools placed on it and a machine tool next to it.
"Okay, everyone knows that today's lesson is to solve a frequently occurring problem. Why does the tap break? How to solve this problem?"
Wang Liang felt that the technical content of this class was too low. What he learned at Norinco was the most cutting-edge technology. The results he achieved in just one year exceeded his imagination. It can be said that the knowledge he learned here was better than what he learned in college.
He learned much more and it was very practical, but now the knowledge he wanted to impart to the workers was the most basic knowledge. In his opinion, this knowledge was as boring as a college student teaching primary school students.
Tap is a tool for processing internal threads, and it is also the most important tool for manufacturing operators to process threads. However, this tool is very easy to break, which is the most common problem in fabrication. Many fabricators are very worried about this, because once it breaks
This phenomenon will affect the accuracy of the thread and cause construction accidents, but there is no good solution.
The solution to tap breakage was a topic chosen by Liu Lang himself, because during the research process he discovered that workers had many bad habits during construction. Some of these habits were caused by workers' carelessness, while others were caused by their lack of basic skills.
Solid, and this tap problem can explain most of the problems.
Wang Liang didn't talk too much and started to explain.
"There are several reasons for tap breakage. First, the tap quality is not good. Second, the tap selection is inappropriate. Third, the tap does not match the material being processed. Fourth, the diameter of the bottom hole is too small. Fifth, there is a problem with the material of the tapping piece. Sixth, the machine tool does not have
To meet the accuracy requirements of taps, the seventh reason is that the quality of the cutting fluid and lubricating oil is not good, the eighth reason is that the cutting speed and feed amount are unreasonable, and the ninth reason is that the operator's technology and skills do not meet the requirements.
We will not talk about the objective reasons, but only the subjective reasons for our work. In particular, we will talk about the solution to the problem that the tap or drill bit breaks in the threaded hole.
The first step is to fill in lubricating oil. This process seems simple, but in fact it is very simple. That is to use a sharp hairpin or chopper to slowly knock out the fracture surface in the opposite direction, and occasionally pour the iron to cut. If the hole diameter is too small for the threaded hole,
Or the broken tap may be too long and inappropriate, but you can try.
The second method is to weld a handle or a hexagonal nut on the broken section of the tap, and then gently reverse it. However, this method is a bit troublesome to weld, and it is not suitable for taps with smaller diameters.
The third is to use a special tool, that is, a broken tap extractor. The principle is that the workpiece and the tap are connected to the positive and negative electrodes respectively, and the electrolyte is filled in the middle, causing the workpiece to discharge and corrode the tap, and then assist needle-nose pliers to remove it, causing damage to the inner hole.
Very small, this is the most correct operation.
The fourth is to put a steel roller against the crack of the tap and slowly tap it with a small hammer. The tap is relatively brittle and will eventually break into slag. Or, even simpler, directly drill and boring the threaded hole of the broken tap, and re-expand and tap the hole.
It's a bit barbaric. If the diameter of the tap is too small, it will be difficult to use. If the diameter is too large, it will be quite tiring to tap.
Fifth, weld the threaded hole where the broken tap is located flat, then grind it flat, and re-drill it. Although it is difficult, you can drill it in slowly. If the threaded hole can be changed, it is recommended to change it when re-drilling and tapping.
to the side of the original threaded hole,
The sixth method is to cut a slot in the cross section of the broken tap and twist it in the opposite direction with a screwdriver. This method is difficult to cut out the slot, especially if the diameter of the tap is small.
The seventh is to drill the threaded hole of the broken tap into a larger size, then insert a wire thread sleeve or pin or something, and then weld, grind, and drill and tap again. It can be basically the same. Although this method is troublesome, it is very practical.
Yeah, the size of the tap doesn't matter.
Eighth, use electric pulse to remove it, either electric spark or wire cutting. If the hole is damaged, you can enlarge the hole and add a wire thread insert. This method is simpler and more convenient. As for the coaxiality, don’t consider it for the time being, unless your threaded hole is the same.
Axiality directly affects the quality of the equipment……….