Metalworking Internship Experience

Metalworking Internship Experiences Fan Wenyi:

Metalworking internship is a practical basic course, which has great significance for cultivating our hands-on ability. It also allows us to understand the traditional mechanical manufacturing process and modern mechanical manufacturing technology. As a student of non-mechanical major, but car and machinery are actually all the way, it is important to learn theoretical knowledge, but the ability to do it is also very important. Our college students usually have less opportunities to do it themselves, and the ability to do it is poor. The demand for comprehensive talent in society. The metalworking internship course brings us practical opportunities for physical and engineering students. Let us walk out of the classroom and do it ourselves in a variety of workpieces and machine workshops. These help for us is huge. .
During the internship, I participated in the lathe, welding, and fitter. I learned a lot of valuable things from it. It taught me what I couldn't learn in books and enhanced my hands-on ability.
The first metalworking internship was very fresh for us. After completing the English class in the first two sessions in the morning, we rushed to the internship base and went to the metalworking workshop. The teacher explained the meaning of the metalworking internship and the curriculum. And security issues during the internship.
The first type of work to be contacted is a lathe. The lathe is using the rotation of the workpiece and the movement of the tool to machine the surface of various revolving bodies on the lathe. Next, the teacher asks us to make the outer circle of the automatic cutter. The diameter of each car is 20 mm, then the cutter can only advance. 10mm, and be proficient in the operation sequence: first adjust the tray to the workpiece zero, retract the knife to advance 10mm, drive, when the knife advances to 3/4, change the manual to the precise position, retract the knife . After several training sessions, we are already familiar with this operation. Although it seems to be a very simple thing, I did know that the small gap caused the whole part to be good or bad. 1mm usually feels very small, it doesn't matter, but the parts are processed on the lathe, I know how big the mistake is 1mm instead of error.
After the turner was a welder, and I saw the flashing electric sparks on the construction site countless times. I know that it is welding. I thought it was easy to operate, but the fact is not like that. It is much harder than I imagined. The odor generated by welding and the glare of the light are harmful to the human body. We took the protective cover and started the operation of my welder. From the teacher, I learned that the angle of the welding rod is generally between 70 and 80. The requirement is of course constant speed. However, in actual operation, we tend to be slow and slow, and it is difficult to maintain a constant speed. Therefore, the result of the welding is very smooth, and in some places, the residence time is short, of course, there is no welding, and there is a crack. In places with long stays, there are often problems of being penetrated and there are loopholes; during the practice, the electrode is often stuck to the iron plate, and the red electrode is looked at, and the heart is in a hurry, but later In the repeated experience, I still mastered some tricks. This time, I realized that I don’t want to look at one thing too simple. I only have done it myself. I have experienced it before I know it.
To the last item, it is also the hardest one - the fitter. Looking at the vise on the workbench and the various tools placed on the left and right: The hand saw and the various sickles know that we have to use our own sweat and hands to make the hammer. Next, we started to clamp a cylinder on the vise, and started the work of the hammer according to the teacher's dash. It didn't make much progress when I saw the iron block. Later, under the guidance of the teacher, I quickly got the kind. The feeling of "rope sawing off". Next, I used the scorpion to flatten the iron surface. During this period, I saw the hammer become smooth and crystal clear. Although the arm and the arm were very painful during this period, I saw that my hammer was changing every day. Not happy. The last day, the hammer finally came out. I watched it think about the process of the week. It seems that I really grew up a lot. This is a craft that I did by myself. Although some of them are substandard, I really realized the importance of doing it. Sex.

Chapter 2:

Time flies so fast, and the internship time of three weeks in a blink of an eye is over. During this time, I learned a lot of things that I couldn't learn at school, and I realized that I have a lot of deficiencies, and I feel that my income is not good.
“Metalworking Internship” is a practical subject-based course. It is also an important compulsory course for engineering students to carry out engineering training, cultivating engineering awareness, learning process knowledge, and improving overall quality. However, as a student of engineering, we have not received serious formal engineering training before. As far as I am concerned, it is very likely that due to long-term neglect, the engineering consciousness is weak, and there is no enough attention to the essence of this engineering thinking. At the same time, in actual operation, it is far from the requirements of work. In fact, as a freshman, it is unscientific to directly contact esoteric professional knowledge before taking a professional course. To this end, the school led us to carry out this internship, let us get a sense of mechanical profession from practice. Recognize and lay a solid foundation for the study of professional courses in the future. Practice is a very important part of university life, a source of constant knowledge and development, a touchstone for testing truth, and an effective way for college students to exercise and grow. It is even more important than classroom. A person's knowledge and ability can only be effective in practice, in order to be enriched, improved and developed. For college students to grow up, they must be diligent in practice, combine the theoretical knowledge and practice they have learned, continue to learn in practice, continue to summarize, gradually improve, innovate, and improve their knowledge, ability, wisdom, etc. in practice. The comprehensive quality and ability of the factors are combined to lay a good foundation for the success of their own career.
This is the first lesson of my internship experience: the first day of the car work, my heart is full of expectations, after all, is the first internship.
There are a lot of things to be remembered by the lathe, but since I had a relatively thorough psychological preparation and theoretical preparation, I would not be too busy. But when you really get it, all kinds of problems will follow. First of all, the first time, the fear of the feet, many processes know that they are doing this, but they are not sure, perhaps because of the first contact with the lathe, it is still very nervous. There is always a problem with the classmates, no matter how patiently the teacher guides.
One morning, I haven't processed a simple hammer handle yet, but I have no big problems at all, and it is a great fortune. In the afternoon, I will continue my unfinished work in the morning. After a morning of adaptation, the hammer handle was quickly completed and it felt pretty good. So my heart was a little fluttering, and it was because of this that I made a mistake when I was doing the second hammer. I used the wrong angle of the knife when cutting the cone. Fortunately, under the guidance of the teacher, remedial measures were taken and the task was finally completed. At the time of the thread, our team always worried about the problem, which was done under the patient guidance of the teacher.
Lesson 2: Locksmith
Without the passion of the first day, I feel very tired. But still full of expectations.
The work we have to do is to punch the hammer with a variety of borings, set the spiral, and assemble.
The whole process of this type of work is physical work. Everyone feels very simple when the teacher explains it, but the actual process is quite different. I remember that some brothers and sisters described it as a "turner, even the face was oiled, knife Spoiled splashes; fitter, full of cockroaches and bubbles on the hands, sweat dripping." Although a bit exaggerated, but it really reflects the hard work of the fitter.
The process is hard, but the results are gratifying. Despite a small holiday on May 1st, after two days of sweat, I finally got a hammer.
Lesson 3: Milling, planing, and grinding machines are a bit accustomed to metalworking internships.
There is a lot of content today, but the process is much easier. Mainly to see the demonstration, the masters are very skilled in the operation, really envious. I have a few hands to get started, and it feels good. The way to take the exam is good, draw lots, huh, huh.
Lesson 4: Casting the most tiring lesson.
With sand molding, I suddenly found the feeling of childhood, but this is obviously not a child playing with sand, but a very careful thing, because the mud is very easy to deform, so be careful when doing it.
The last lesson: welding and pressure casting are a bit reluctant and a little excited. Faced with a brand new technology, I used to look at other people. I felt very simple. It was really difficult to find out when I started to work. Especially welding, I have practiced for a long time.
I still have a lot of experience during my internship. The first is self-learning - after work, no longer like studying in school, there are classes, homework, exams, but everything must be taken on its own initiative. As long as you want to learn, there are still many opportunities for learning. The masters never despise their own experience to guide us to work, let us take less detours; group companies, companies have a variety of training to improve themselves, we have to do It’s just what you need to know and what you are interested in. In the internship unit, I met a few very kind old employees. As long as they asked them technical questions, they will answer them one by one, which made me understand that there is a big gap between the theory and the actual situation. It also made me understand some problems that are not understood in the classroom. The second is a positive work attitude - in the work, you not only create benefits for the company, but also improve yourself, newcomers like me who have no work experience, but also need to learn more by doing more questions. In particular, our work does not have a clear scope of work as a formal employee. It is just a free observation. If the attitude is not active enough, there may be no things to do. Therefore, it is more necessary to actively strive for more things, so that we can accumulate more and improve. The third is the basic etiquette - you need to understand the basic etiquette when you step into the society, and this is often not taken seriously by the students. Whether it is dressing or waiting for people, it should be ceremonial, so as not to affect the normal work. This requires more learning, such as paying attention to other people's practices or consulting with experts. The fourth is to do things for people - as students face nothing more than classmates, teachers, parents, and work to face more complex relationships. Whether it is in contact with leaders, colleagues or customers, it must be handled properly, communicate more, and be empathetic in terms of each other, rather than just thinking about your own affairs.
I think that through this internship, I have recognized many of my shortcomings and shortcomings. The first is the lack of work experience. Because I lack experience, many problems can not distinguish between the primary and secondary, and some training or learning can not find the key points. With the internship work, I think I will gradually accumulate experience. The second is that the work attitude is still not positive enough. In the work, only the work of arrangement can be completed. When there is no work task, the work can not be actively requested. If there is no work, it will be lax and cannot be actively studied. This is mainly because laziness is at work, and I will try to overcome it in the future. Inert, when there is no work task, it is required to arrange work, and when it is not arranged, it is self-learning. The third is that we still need to pursue perfection when we work. We are not allowed to be sloppy at work. Strict and serious is always to be kept in mind. The fourth is that the ability to do things is too bad, watching the master do a very good job, always feel very simple, but I actually found it really very difficult to actually operate.
Solid professional knowledge is a solid foundation for improving the level of work. When studying professional knowledge in school, it may feel boring, but when you work, you will find out how important professional knowledge is. But I want to improve my work efficiency, work quality. This knowledge is only known to be far from being, but to be proficient. As a production technology, it is the authority of equipment in the automobile company. If there is no solid mechanical knowledge, how can you serve people in this respect? How can the problem of equipment be solved quickly and effectively?
Experience:
The phrase "painful and happy" is used to describe a three-week metalworking internship. This internship has brought us more than just experience. It has also cultivated our hard-working spirit and rigorous and serious style. It doesn't matter if the workpiece is a few millimeters apart, and every error can cause huge losses.
"There is a glimpse of the end of the paper, and I’m going to practice it."
In just three weeks, it has passed, tired, bitter, and thought about it. The work is not so satisfactory, but the significance is very significant. One bit of work and one harvest, we get much more exercise than we pay.

Chapter three:

The five-week metalworking internship was over. Although it was very tired during the internship, we were very happy because we learned a lot of useful things while exercising our hands-on ability. Although the internship period is only a short five weeks, it is only a small part of our university life, but it is a very important part. For us, it is very difficult to forget. After all, it is a real experience society. Experience life.
Through this metalworking internship, I learned the basic knowledge and basic operation methods of fitters, turners, milling, grinding and CNC cars, milling, sparking machines, wire cutting machines, etc. I mainly learned the following aspects: the operation of fitters, turners, millers, millers, etc.
The first one: hard fitter
In the fitter's internship, we know that the main contents of the fitter are scraping, drilling, sawing, boring, assembling, scribing; understanding the construction, classification, selection, boring posture, boring method and quality of the boring tool. Detection. Our training project is to make a little girl, it is easier said than done. Our task is to manually drop a 115cm long round bar of 30 into a 20×20 long 112cm small steamed bun. Inadvertently, the entire work will be scrapped. First of all, it is necessary to hold the boring tool correctly. Keeping the straight motion of the boring tool when cutting the plane is the key to boring. The boring force has two kinds of horizontal thrust and vertical pressure. When the file advances, the front hand pressure gradually decreases, and the hand pressure is large and then small. When the file is pushed to the middle position, the pressure of the two hands is the same. When the file is continuously pushed, the pressure of the front hand gradually decreases and the pressure increases. No pressure is applied when the file is returned. This way we are more difficult to cut. At the same time, I also know that the safety technology of the fitter is: 1. The clamp table should be placed in a place where work and light are suitable; the drill press and the grinding wheel should generally be placed at the edge of the site to ensure safety. 2, the use of machine tools, tools, should be checked frequently, found that damage should not be used, need to be repaired and reused. 3. When the vise clamps the tool, it is not allowed to use a hammer to hammer the handle or the steel pipe to apply the clamping force.
Then there are scraping, grinding, drilling, reaming, and the like. Although not very standard, it is the crystallization of our sweat and the result of our struggle for a few days.
The internship of the fitter is very boring. It may be an afternoon, but it is a reversal of an action, but also a force, but also to do it, that is, holding the sickle on the workpiece back and forth, At night, the whole person’s hands are sore and sore, and the legs are standing up with some rigidity. However, when they are tired, they can see the teacher guiding them and demonstrate them personally. Like us, I see this and give me every time. Take power. A few days later, looking at my own processing results, what we want to say most is to thank the teachers who have guided us.
The second item: easy turner, milling
Turning and milling are not done by CNC, which requires high manual operation. First of all, the teacher told us to listen to the lathe and familiarize with the various components of the lathe. The lathe is mainly composed of gearbox, headstock, hanging wheel box, feed box, slide box, knife holder, tailstock, bed, screw, light. The bar and the joystick are composed. Milling machines mainly consist of a spindle box, a spindle, a column, an electrical cabinet, a work table, a coolant tank, and a bed. The lathe and milling machine are operated by various handles. The teacher explained the function of each handle to us, and then let us familiar with the practice of machining parts. The teacher first demonstrated the operation method and processed a part, then let us start processing. A very important aspect of lathe machining is to choose the right knife. At the beginning we have to drive a bearing-like part. This is a test for those of us who have never used a lathe.
Constantly turning the horizontal and vertical control handles, careful processing, and doing a whole afternoon, when I thought I was about the same time, I was prepared to take the last knife, but I was too hasty to make the diameter of the arc small! I am distressed, miserable! The most uncomfortable thing was that I stood up all day and my calves hurt. But the joy of success when I handed the good parts of the car to the teacher made me forget the calf that stood so painful. The joy of this success is only through personal experience. You can feel it by participating in training.
As a college student, we have experienced more than ten years of theoretical study. We have been told more than once that there is a gap between theoretical knowledge and practice. However, we have not taken this sentence seriously and have no chance to verify the actual gap between this sentence. how many. The metalworking internship gave us an opportunity to actually master the knowledge, leaving the rigorous environment of the classroom, we felt the atmosphere in the workshop. The eager eyes of the students and the conscientious and patient operation of the instructors constitute the common scenery in the workshop. We have felt the importance of hands-on ability in the classroom for a long time. We can't complete the actual work only by thinking and figuring in the brain. Only when we have a scientific knowledge system, we are proficient in practical ability, including mechanical operation and experience. Continuous accumulation can make knowledge flexible and effective in practical work. Metalworking internship is an effective way to cultivate students' practical ability. Here is another learning class. Through our hands, we supplement and question the theoretical knowledge we have mastered. This is the opposite of traditional classroom education. These two learning methods complement each other and complement each other, can fill in the gaps and make up for some blind spots. Through the metalworking internship, the overall feeling of actual production methods is still relatively backward. The advanced equipment introduced in the book is still not practical. The equipment in the internship is often characterized by high labor intensity and low technological content, but there are still some basic knowledge. Can be applied in practice.
The third item: grinding operation and CNC car, milling, spark machine, wire cutting machine, etc.
When our training was coming to an end, the teacher took me to the grinding workshop to explain the operation of the grinding machine. After we listened carefully, I started to move my own hands, and I used my own machine tool to grind my front fitter training. The gimmick made, with the teacher's careful knowledge, we used our lathe to process one side again, making our first work more perfect. After completing the grinding task, the teacher took us to the CNC training room to explain the principle and operation of some CNC equipment, which enabled us to lay a solid foundation for learning theoretical knowledge in the future.
All in all, although in the five weeks of training, what we have learned is only a fur for the technicians, but there is a process in everything. What we have learned is the basic basics, and the technicians come from simple to complex "evolution". The most gratifying thing is that no classmates are injured in these kinds of internships with different degrees of danger. On the contrary, there will be some sweet smiles from time to time in the internship. This is inseparable from the seriousness and care of the students. The metalworking internship made me feel the bitterness and joy of being a worker, and tested the knowledge I had learned. The metalworking internship makes me deeply understand the meaning of life - there is no difficulty in the world, as long as the kung fu is deep, the iron smashed into a needle!

Chapter 4:

The one-month metalworking internship was over. During this nearly one month, I felt that I have gained a lot from both the teacher and the content of the learning. I really appreciate this experience.
For metalworking internships, I think that as an engineering student, you have to go through it. The experience of a technician who does not touch the factory and does not touch the machine is incomplete, so the school's metalworking internship program provides us with a platform for us to fully understand the factory, the tools, and the machine. Understand and love. Metalworking internships have helped me a lot in the operation of the machine, my own hands-on ability and understanding of the tools used.
The process of practice can really realize a kind of happiness. Of course, troubles always exist. It can be said that the whole process has been painful and happy. Every job seems to be vividly remembered now, and the happiness and pain are even more cherished.
For example, during the internship of the first type of fitter, I tried to flatten every piece of iron, but the level of the side was high, and there was a problem there, and there was a problem. A workpiece is much smaller than others, and naturally there is no higher score. As a second artifact, I will continue to ask the students and teachers around me how to get enough. How to use shackles, tactics, etc. How to use force, how to force, they have given a very patient explanation, three days, I gradually got a certain understanding of the use of sickles, saws, etc., and also have tools I must feel that the work I have made is finally like it.
Casting has left a deep impression on me. It may be that I am doing things too seriously. The teacher suggested filling in the sand when the mold was filled, so I tamped the sand filled over and over again, wasting a lot of time, when others had started filling the second mold. When I was in the sand, my first mold was just half added. Finally, I swayed and finished the whole process. When we finally finished the scoring, we found that the ones I filled were as hard as the bricks. I found this. It's not a good thing. I think that sometimes it's not a good thing to be too serious. It's too late! When we work, we take care of quality on the one hand, and on the other hand, we must pay attention to speed.
There is also computer-aided design, wonderful modeling, wonderful shapes, I did not think that I can learn to understand so fast, of course, this should be very grateful to the teacher for detailed explanation and help!
At the same time, in the process of internship, I have really learned some advanced machines, advanced processing technology, processing methods, efficient production hours, high-quality processed products. In the face of these, I feel that I am interested in machinery. I was inspired, and in the face of these machines, I can feel a kind of heartfelt happiness. I think the strong interest in the machine will motivate me to have a strong motivation for mechanical learning in the future, but I know that only motivation is not enough. I still need lasting patience and perseverance.
Metalworking internship also gave me a lot of exercise opportunities in another aspect. Every time I am the last person to leave in the factory, I am not saying how serious I am, how detailed I am, but I know that my ability to do things is very poor, what I need is patient and step by step to exercise myself step by step. Really improve their practical ability. My hands-on ability is very poor. I usually take 2 or 3 hours for things that can be done in an hour. After 2 or 3 hours, I am not necessarily better than others. I am also anxious and very I want to improve my speed, but I can't do it. I lost quality when I got the speed. I remembered that the quality has fallen. I still can't balance my time allocation after the whole metalworking internship, but I absolutely believe that I can learn. A lot has arrived.
I know that I have learned a lot. First of all, it is a kind of patience. It is not just a fitter. Every job requires a patience and a commitment to do it. Every job is a task. How to complete each task is just right. It is the grasp of the balance point that requires a calm mind and a patience.
The second is careful, and all kinds of work require careful observation to realize the connotation. In order to have a certain grasp of this type of work, the processing of each part, the direction of operation of each machine handle, the buttons on each keyboard need us to use a careful observation to grasp the hidden use methods, only This kind of carefulness can have a certain understanding of the working principle of each type of work.
Again, be careful. Every job type must talk about safety before the internship. It is safe at the beginning of the entire metalworking internship, so be careful. It’s really astounding to hear that the internship teacher will give us so many tragic things happening on the lathe. I will never, operate the lathe with gloves; never again, forget to turn off the power of the machine when I leave; no longer, I will tamper with the equipment...because I know that this kind of care is related to your life. I need to guarantee the longevity and health of life. If the accident happens only because of sloppy, careless, and not listening to the teacher, the cost is too great.
The above is my experience in the metalworking internship stage. Under the circumstances, I would like to mention some personal suggestions about certain aspects of my metalworking internship.
1. Regarding the extension of the internship time, I feel that it is difficult to learn so many jobs in such a short period of time, and I feel that many places are not well understood and very unclear. Therefore, I suggest that I hope to extend the study time. I always feel that the metalworking internship has helped me a lot. I think it is the same for other students. So why don't you extend it because of such a big help?!!
2. Very advanced equipment has not been seen. Is it possible to add some video lectures to describe some of the world's leading equipment in the direction of the profession, as well as its processing technology and the quality of the processed abrasives.
3. I really want to know the internal structure of the machine tool. I originally engaged in the mechanical aspect. Therefore, I am very interested in the mechanical structure inside each lathe of each machine, so I especially want to know the installation of the device inside, how is the power transmission? In particular, I hope that I can take out a few machines and ask the teacher to explain the principle of the internal workings of the machine. This way, on the one hand, it can be very good to avoid the improper operation of the students, resulting in damage to the machine. On the other hand, as a student, we also I learned a little about how to repair a mechanical lathe.
4. I always feel that the gear transmission era is about to pass. Some new transmission methods are needed to replace the gears. The friction of the gears and the vibrations during the transmission have caused great damage to the service life of the machine. On the other hand, the gear transmission is very Large errors are also not conducive to accurate manufacturing of products, and large noise pollution has a great impact on the working conditions of employees, so I believe that the gear era is coming to an end.
Finally, I would like to thank each teacher again for their patient explanations and tireless help during the metalworking internship. These have given me a lot of improvement, thank you!

Chapter 5:

The two-week metalworking internship was over, and the students were very hard-working because they wanted to learn more than the textbooks. Here is a brief summary of the metalworking internship.
Metalworking internship is a practical basic course. It is an indispensable pre-requisite course for students majoring in mechanical engineering to learn engineering materials and mechanical manufacturing. It is an important practical teaching link in non-machine related professional teaching programs. It has great significance for cultivating our hands-on ability. It also allows us to understand the traditional mechanical manufacturing process and modern mechanical manufacturing technology.
As a student of automation, it is important to learn theoretical knowledge, but the ability to do it is also very important. Many college students, especially those from the city, usually have less chances to do it themselves, and their ability to do it is poor. The demand for comprehensive talent in society. The metalworking internship course brings us practical opportunities for physical and engineering students. Let us walk out of the classroom and do it ourselves in a variety of workpieces and machine workshops. These help for us is huge. . I am grateful to the school for providing such an opportunity, and also to the teachers who have led and guided us to study.
Once again, we put on the military uniforms and become a beautiful scenery in the campus. I remember that for the first time, we took the curious and excited mood and marched toward the engineering and metalworking practice base, imagining the joy of processing the workpiece by ourselves. . However, the time passed is really fast. In a blink of an eye, the 18-hour metalworking internship in the short semester is over. In the days of the blue-collar, we have had hardships and fears, but we have gained more. Happy and valuable hands-on experience. The kindness and experience that the teachers and classmates gathered in the workshop will be the eternal memories of my life.
During the internship, I participated in the lathe, welding, fitter, and milling. I learned a lot of valuable things from it. It taught me what I couldn't learn in books and enhanced my hands-on ability.
First class
The first metalworking internship was very fresh for us. In the early morning, we greeted the Chaoyang and eagerly set off to the internship base. Today we took a class in advance. The teacher explained the meaning of the metalworking internship, the curriculum, and Safety issues during the internship. Overall, the number of internships we have is significantly less, which may be due to the venue, but I believe that the internship time will gradually increase. Next, the teacher gave us a detailed introduction to the various knowledge of tools, workpieces, and lathes. Although this knowledge is very strange to us, the teacher's patience explains us, and we are beginning to have an interest, and we listen more seriously because This knowledge is the most basic and most important. Next, we will be led by different teachers to participate in their respective types of work.
I am in the third group, the first type of work is the lathe. The lathe uses the rotation of the workpiece and the movement of the tool to machine the surface of various revolving bodies on the lathe, including: inner and outer conical surfaces, internal and external threads, end faces, grooves, etc. The cutters used by the lathe have: turning tools, boring tools , drill bit, etc., when the car is machined, the rotary motion of the workpiece is the main motion, and the lateral or longitudinal movement of the tool relative to the workpiece is the feed motion.
Facing the huge lathe, we are very strange to it except for curiosity. The teacher gave us a careful explanation of the names and operating details of the various parts of the lathe. We are gradually familiar with the front, the feed box, the knife box, the tray, etc. The control of the components, the teacher asked us not to start the lathe, focusing on vertical and horizontal manual feeding practice. It is required to achieve accurate and free movement of the advance and retreat, and the feed movement is slow, uniform and continuous. After a certain degree, you can drive the car and every operation will be familiar to us. Next, the teacher asks us to make the outer circle of the automatic cutter. The diameter of each car is 20 mm, then the tool can only advance 10mm, and be skilled. Master the operation sequence: first adjust the pallet to the workpiece to zero, retract the knife to advance 10mm, drive, when the knife advances to 3/4, change the manual to the precise position, retreat to stop. After several training sessions, we are already familiar with this operation. Due to time, we can only give this task, but we are very serious, and for the first time we see the results of our labor on such a huge machine tool. I am really happy, I believe that I am in the next internship. The better it will be!
The second lesson welding
I have seen flashing electric sparks on construction sites countless times. I know that is welding. In this lesson, we have to touch the welding that many students are afraid of. It is easy to operate, but the fact is not like that. I imagine it is much harder.
Today, the teacher gave us a detailed description of the welding related operations and some precautions. The odor and glare of the welding are harmful to the human body. We must know how to protect ourselves, put on the overalls, and wear the cover. From the teacher's explanation, I learned that the angle of the welding rod is generally between 70 and 80. The speed of the moving rod is of course constant speed. However, in actual operation, we tend to be slow and slow, and it is difficult to maintain a constant speed. Therefore, the result of the welding is very fluent. In some places, the residence time is short, of course, there is no welding, and there are cracks. In places with long residence time, there are often problems of being penetrated and holes are present; the height of the electrode is high. It is required to be kept at two to four millimeters. However, it is also a loophole at the beginning of its own operation. Because the welding rod is continuously shortened at the same time as the moving rod, it is necessary to constantly change the original height of the welding rod. It is easy to get out of the arc when it is high, and it is easy to stick when it is low. Each classmate tried three welding rods, and the strange shape that the welder had welded himself. The heart was in a hurry. Fortunately, after many times of welding, he began to slowly find the hand and passed the final test with a good result. . Through this welding, we have mastered the knowledge of spot welding, but in order to be the standard of professional workers, we need to practice repeatedly, and practice makes perfect. Although welding is very tired and dangerous, we have soldered it and experienced it. We will have the opportunity to practice it in the future.
Lesson 3 fitter
Today, we have to carry out one of the most tiring types of work - the fitter, the teacher told us that the fitter is a complete manual to make a variety of parts, is the best ability to exercise a person, some great engineers, they all value themselves Work on the fitter and have a good grasp of the fitter. After listening to the teacher's words, we suddenly felt that the fitter is a very great job, and should be experienced during the internship.