Fan Wen (1), an internship report on metalworking for college students, went deep into the factory to operate machines for the first time since childhood, which was both curious and exciting.
In the practice workshop, the machine tool is running and the workpiece is processed step by step. Although the workpiece is simple and the operation process is not difficult, every point on the workpiece is mixed with the sweat of the masters, and every knife is engraved with my mood.
Don't underestimate this heavy machine, it is this heavy machine that laid our industrial foundation; Don't underestimate this simple operation. It is this simple operation that constitutes the combination of practice and theory. The workpieces processed by these machines are simple and good, but imagine which machine that supports modernization is not made of such simple workpieces.
Practice is only four and a half days, but you can learn a lot. For a college student, especially an engineering student, the combination of practice and theory is particularly important, and practice directly provides this bridge. It allows us to apply what we have learned, and at the same time, it also allows us to learn things that books can't learn. Internship satisfies our curiosity and makes our excitement gradually disappear, but what remains in our hearts is the hardship of work. More importantly, it gives us a sense of responsibility, a sense of responsibility for social development and a sense of responsibility for the country. This sense of responsibility urges me to study harder, enrich myself and arm myself with scientific and technological knowledge, so that I can devote myself to modernization as soon as possible.
As college students, after more than ten years of theoretical study, we have been told more than once that there is a gap between theoretical knowledge and practice, but we have never taken this sentence seriously, and we have no chance to verify the actual gap. Metalworking practice gives us the opportunity to master knowledge in practice. Without the rigorous environment in the classroom, we felt the atmosphere in the workshop.
The studious eyes of the students and the careful and patient operation of the instructor constitute the common scenery in the workshop. After staying in class for a long time, we feel the importance of practical ability. You can't finish the actual work just by thinking and thinking with your head. Only when you have a scientific knowledge system and master the practical ability, including the continuous accumulation of mechanical operation and experience, can you apply what you have learned to practical work flexibly and effectively.
China's current education system makes the practical ability of college students who have passed the college entrance examination weak. Therefore, universities in the transitional stage between school and society undertake the task of cultivating students' practical ability. Metalworking practice is an effective way to cultivate students' practical ability. Based on this, students must pay enough attention to this course, make full use of this time and improve their practical ability.
This is another kind of learning classroom. Through our hands-on, we supplement and question the theoretical knowledge we have mastered. This is just the opposite of traditional classroom education. These two learning methods complement each other, which can fill the blank and make up for some blind spots of one of them.
Through metalworking practice, I feel that the actual production mode is still relatively backward, and I can't actually operate the advanced equipment introduced in the book. The equipment in practice is often labor-intensive and low in technology, but some basic knowledge can be applied in practice. Metalworking practice made me feel a lot. When looking forward to novelty has now become a common practice, those fears about lathes have disappeared after personal practice. The teacher here is kind and strict, speaks kindly and jokes, but when it comes to theoretical knowledge and safety education, he is unambiguous, careful and meticulous, and there are scary classroom questions. Fortunately, most students listened carefully and passed the exam easily.
When observing the class, I thought it was quite simple, but once I got started, I found it was not as easy as I thought. Fortunately, each group is equipped with a tutor. If you have any questions, you can always ask them. The teacher always answers them patiently. Teachers go to work not far away, and sometimes they accidentally carry out "illegal operations", and teachers will suddenly appear to point out mistakes and feel safe.
I didn't know how difficult it was to be a lathe worker until I was an intern. I want to be familiar with every operation step, remember every note and concentrate all the time. If I'm not careful, an accident may happen. The poor working environment, the roaring noise of lathe and the dust pollution caused by cutting have never been experienced by me as a student, which makes me deeply aware of my responsibilities. After the regular work system, I want to say that metalworking practice not only made me learn a lot of knowledge that I couldn't learn in class, but also made me rethink and know myself and my study.
Model essay on metalworking practice for college students (2) As a college student, when I first came into contact with such new things as sand mold and sand core, my first feeling was that I was curious. What I learned in books is finally seen in reality. It is admirable and can't wait to see the instructor magically make beautiful models with the tools in his hand. I only know when I do it myself that it is not easy to do it, either too loose or too solid, and it is always difficult to get out of the mold, which makes my back ache.
However, there are still many feelings in my heart when I am tired. For the first time in my life, I had the opportunity to "apply what I have learned", which made me feel a sense of accomplishment, and I really realized that truth has to be tested by practice. If you don't try yourself, no matter how good you learn, it's no use. There are many things that are not written in books and can only be understood in practice. Talking on paper will only lead people into misunderstanding, and practice is the eternal teacher.
In the foundry department, the teacher taught us seriously, constantly shuttling through the crowd, correcting our mistakes in operation at any time, correcting our hand shape, and patiently analyzing the advantages and disadvantages of the sand molds we made over and over again. Although the time is only two and a half days, the masters have tried their best to teach us more in such a limited time, hoping that we can really gain something instead of returning empty-handed. We do feel a little guilty about this, because our psychology is a little bit wanting to take this opportunity to relax, not 100% investment.
However, we will definitely correct our mentality, put more thoughts on the internship, and really learn useful knowledge in this short month.
Metalworking practice is a very practical basic course, a necessary prerequisite for students majoring in mechanical engineering to learn courses such as engineering materials and mechanical manufacturing foundation, and an important practical teaching link in the teaching plan of non-mechanical related majors. This is of great significance to cultivate our practical ability. But also made us understand the traditional and modern mechanical manufacturing technologies.
China's current education system makes the practical ability of college students who have passed the college entrance examination weak. Therefore, universities in the transitional stage between school and society undertake the task of cultivating students' practical ability. Metalworking practice is an effective way to cultivate students' practical ability. Based on this, students must pay enough attention to this course and make full use of this month's time to improve their practical ability.
Although the engineering training center of our school has some defects such as limited equipment and relatively weak teachers, through effective organization, the school still allows students to practice in batches and has achieved ideal results. After personal experience and communication with my classmates, I found that most of my classmates are still very interested in this course. We listened carefully to the teacher's explanation and completed the task under the guidance of the master. Take forging as an example. At first, the students were a little afraid of fiery red steel bars and splashing during forging. But through the patient explanation and help of the master, this kind of psychology was gradually replaced by curiosity and put into training. When we look at our own artifacts, our hearts are extremely happy.
However, there are also very few students who show impatience and don't want to take part in the practice or deal with it. These students should seriously think about the intention of the school to arrange this course and devote themselves to this rare practical activity as soon as possible. The production process of mechanical manufacturing is essentially a process of transforming resources into products or parts, and it is a large production system with a large number of equipment, materials, manpower and processing technology in an orderly combination. We can't fully master this technology in a month. But at the very least, we should know some general processes of mechanical manufacturing, be familiar with the common processing methods of mechanical parts, and initially have the ability to select processing methods, conduct process analysis and formulate process regulations. This can lay a solid foundation for subsequent courses.
In addition, I think our school's metalworking practice class should reduce some explanation time and increase some hands-on time. We can also move some theories to students' hands-on time, which is more conducive to achieving our goals. Metalworking practice is actually a process of understanding modern advanced industrial technology. I have some ideas and suggestions during my internship.
I am deeply touched, and I am very grateful to the school for providing us with this internship opportunity in the factory, so that we can experience the difficulty of studying engineering in advance and gain knowledge that we can't get in class and can't expect. Maybe we won't take this post in the future, but the knowledge and feelings we have learned now are unforgettable. It's dirty and tired, but it doesn't matter. The important thing is that we have achieved and achieved results.
I think more time should be allocated to high-tech practice projects such as milling and thread counting, so as to truly experience the fun brought by high technology. In welding, I think we should introduce some advanced technologies. Although I don't have to buy these equipment, I think I still need to teach some, so that I can know the gap between myself and the advanced level in the world.
The metalworking practice time is limited, but the harvest is great. We will turn the gap between our metalworking practice and the world's advanced technology into a driving force for learning and make contributions to China's technological innovation and scientific and technological progress.
Model essay on metalworking practice for college students (3) The two-week metalworking practice ended in the echo of metal. Generally speaking, the two-week internship is an interesting and important experience, which will definitely affect my future study and work. I don't think there will be such an opportunity in the future to experience the methods commonly used in today's industry in such a short time; I'm afraid it's hard to have such luck to experience how everything around you is made. I learned a lot through this short and substantial internship.
1, safety first.
In industrial production, it is very important to put safety first! ! This is the first suggestion that every teacher gave us. In the theme of industrial safety, we were arranged to watch a video about practical safety in turn. The video shows in detail the internship requirements and safety treatment of welding, gas welding, heat treatment and other types of work. When we looked at such a complicated machine born from operation and many accidents caused by not operating the machine as required, we were all shocked. I really don't know, I'm shocked! An unintentional action or a small negligence may lead to mechanical accidents or even personal safety accidents. Before the safety accident, many people didn't pay attention to safety education, thinking it was too complicated and boring. Once something goes wrong, it's wise after the event.
After watching the video, we listened to the teacher explain the knowledge about industrial safety in the workshop. Looking at the information handed down, I realized the importance of industrial safety. Industrial safety knowledge is necessary for senior industrial managers and developers, and it is very important for formulating enterprise safety regulations, reducing industrial pollution, fire prevention and explosion prevention. If you don't master it, you will not only be dismissed as ignorant, but sometimes serious accidents will happen. Therefore, safety is always the first. We keep it in mind and do things seriously. I am glad that I paid enough attention to it, so I spent two weeks of internship safely!
2, CNC lathe.
The first job of our internship was CNC lathe operation. It is programmed to control the lathe for machining. Through the operation and programming of CNC lathe, I deeply felt the convenience, accuracy and quickness of CNC. As long as the correct program is input, the lathe will perform the corresponding operation. The programming requirements of car counting 980 are very high, and an incorrect symbol may lead to the failure of car counting. Programming is a big problem for me. As a result, my classmates and I studied for a long time before we came up with a feasible plan. Alas, that's when I realized how important programming is in the application. I regret not studying hard and laying a good foundation. It's really "I hate books when I use them"!
Later, I learned CNC EDM, which also needs programming. But it is programmed automatically by the computer, as long as you input the graphics of the parts to be processed, choose the cutting path and put the raw materials away. That machine is so convenient, although there is no chance of actual operation, we are still amazed to see some cutting objects next to it. Those badges with good touch make us deeply impressed by the great power of science and technology!
3. Unforgettable lathe worker.
Turning is not done by numerical control, it requires high manual operation ability. First of all, the teacher asked us to look at the lathe while reading and get familiar with the various parts of the lathe. Lathe is mainly composed of gearbox, spindle box, change gear box, feed box, slide box, tool rest, tailstock, lathe bed, lead screw, polished rod and joystick. Lathe is operated by various handles. The teacher explained the function of each handle to us, and then let us process a workpiece with a spherical side and a cylinder in the middle. The teacher first demonstrated the operation method, processed a part, and then let us start processing.
A very important aspect in lathe machining is the selection of suitable tools. First of all, the end face of a given cylinder should be flattened, then it should be machined with a deviator, and then the spherical surface should be machined by grooving. At this time, we will switch to slotting knives. The width of the cutting head of the grooving knife is small, with a main knife and two auxiliary knives. The cutting head is small and easy to break, so a small cutting amount should be adopted. When grooving, use the left and right knife borrowing method. It is really a test for people like us who have never used a lathe to process the spherical surface after cutting the groove.
I kept turning the horizontal and vertical control handles and handled them carefully. When I thought I had been cutting for almost a whole period of time, I rushed over and cut off a corner of the sphere! I am heartbroken that the original successful product was destroyed by myself. Damn it! In desperation, we had to reduce the radius of the ball. After several contractions, we finally turned out a part that can barely be said to be a ball. The most uncomfortable thing is that my calf hurts after standing all day. But when I handed over the parts of my car to the teacher, the joy of success made me forget that my calf hurt when I stood. This joy of success can only be felt by personally participating in the internship.
4. Casting and forming.
The next job is casting. After listening to the students, this is not an easy job! It needs our brains to turn those shapeless sand and soil into what we want. This requires not only our physical strength, but also our patience. We must not be careless!
Casting can be said to be a complete aftertaste of playing with sediment when I was a child. But at this time, in addition to the impulsive heart, what is needed is more care and patience. It seems as simple as that: four steps: 1, making a lower sand mold, making an upper sand mold, punching holes, unpacking, demoulding and assembling the mold. But if you want to make a mold that surprises everyone, it is impossible to get it without repeated trimming. Sometimes a wonderful pen can blossom, but sometimes all your efforts are in vain just because of your little mending! At the end of the whole day, although we are all very tired, we feel nothing when we see the fruits of our efforts! It's just that we don't even believe our eyes, so a bunch of things can become so beautiful under our careful processing.
In this short period of two weeks, we also carried out internship operations such as planing, injection molding and heat treatment, which was very interesting. The operating essentials and requirements of each type of work are different, and the degree of difficulty is also different. Although I have to get up early every day, sometimes I don't have time to take a nap at noon. It's hard, but nothing can replace my sense of fullness. Some basic skills learned will also be good for our future development.
The metalworking practice report for college students (4) The two-week metalworking practice is over. Just like military training, there are unspeakable hardships and unforgettable happiness. I started classes this week, and I didn't feel tired of practicing during the day, but it's hard to avoid a special aftertaste when I watched the students majoring in mechanical and electrical engineering go to practice as we did two weeks ago. With the patient and meticulous teaching of teachers and our active cooperation, we didn't have an injury accident, basically reached the expected practice requirements, and successfully completed the two-week practice.
Metalworking Practice is a highly practical technical basic course, and it is also an important compulsory course for engineering students in colleges and universities to learn the basic process methods and technologies of mechanical manufacturing and complete the basic engineering training. Not only did we gain the basic knowledge of mechanical manufacturing, understand the general operation of mechanical manufacturing, and improve the operation skills and hands-on ability, but also strengthened the exercise of integrating theory with practice, improved the engineering practice ability and cultivated the engineering quality. I learned a lot through this short and substantial internship.
Probably most science and engineering students in schools have to do metalworking practice. As a student majoring in assembly and control, it is natural to exercise in this process, but I didn't expect it to come so quickly and suddenly. I thought we were going to have classes according to the intensive homework schedule. I didn't expect that the first class in school was metalworking practice, which was both surprising and scary. Surprisingly, the legendary metalworking practice finally came to us, and its arrival greatly satisfied our curiosity. On the other hand, I am afraid because I don't know what the internship is like and whether it will be as dirty and tired as the legend.
Knowing that we were going to metalworking practice, we all took out the "pressure box treasure"-military training clothes, which became our preferred "work clothes" because of their dirt resistance and wear resistance. On Monday of the first week, early in the morning, we all wore white military training uniforms and set off for the metalworking practice factory behind the third district. Along the way, we also saw many people wearing the same clothes as us, and everyone walked to the factory in unison, which made me seem to have returned to my military training life last semester. We learned from the teacher that the internship lasted for two weeks. In these two weeks, we will study two main projects: locksmith and machining.
In the first week, we will learn from locksmiths. The teacher called all the students at the factory gate. After some introduction, we moved chairs and sat down at the door. Then we put a message about the locksmith. The film is quite old. I can see that it has been a few years. The most important thing is that there are no subtitles. They are all amateurs and have never been exposed to mechanical equipment. Coupled with the lack of subtitles, it is undoubtedly more difficult for us to understand and know the job of locksmith. Fortunately, in the next few days, the teacher's explanation was in place. After going back and forth to the dormitory, we got to know Baidu online and got a more thorough and intuitive understanding of the fitter. The locksmith is a manual operation in cutting, mechanical assembly and repair operations, which is named after the operation of clamping the workpiece with a vise on the workbench. Fitter has a wide range of applications. The fitter's main task is to process parts. Some processes that are not suitable or cannot be solved by mechanical methods can be completed by fitters, such as marking, precision machining, inspection and repair.
In addition, locksmith has applications in assembly, equipment maintenance, tool manufacturing and repair, which shows that locksmith is closely related to our life and production, so it is necessary for a science and engineering student to practice and contact locksmith. In the video and the teacher's explanation, we also learned that locksmith is the oldest metalworking technology in machinery. It has a long history. Although the development and popularization of various machine tools have gradually realized the mechanization and automation of most locksmith operations, locksmith is still a basic technology widely used in mechanical manufacturing. The fitter's work mainly includes chiseling, filing, sawing, scribing, drilling, reaming, tapping and tapping, grinding, straightening, bending and riveting.
With our preliminary understanding of locksmiths, the next step is the actual operation. You know, there can be no theory without practice. So, under the guidance of the teacher, a large group of us entered the factory, and there were many long tables, each with four working tables on both sides, and the tables were separated by barbed wire to prevent iron chips from flying out and hurting people on the opposite working tables during processing operations. In fact, a vice is installed on the workbench, and the one at the bottom of the table has a toolbox.
The teacher asked us to find our own workbench, and then opened the toolbox to check whether the tools in it were lost or damaged. When I opened the drawer, I saw a lot of black things, horizontal and vertical, round and flat, and most of them didn't look familiar. Fortunately, there is a list of tools in it, and I can identify them one by one according to their characteristics. Our task is simple, that is, to process a circular iron column into a hexagonal nut. Because fitters are mostly operated by hand, we are struggling at first without training, and our hands are almost broken, but we are constantly familiar with it during tempering and know how to use tools correctly. Due to the revision of the operation method, we gradually became less struggling. On the fourth day, the nuts in my hand were shaped, at least in my opinion, they were finished. The completion of nuts is an encouragement to my efforts these days. Because I saw my finished products in the factory for the first time in my life, I felt very fulfilled.
Because of the rapid adaptation, time slipped away unconsciously, and the week-long locksmith internship quickly passed. Then the machining practice. Compared with the fitter, the "monster" at the processing end makes our curiosity explode instantly, but at the same time, the danger at the processing end is much greater than that at the fitter end, because those cold guys have no feelings and their strength is beyond our comparison. In fact, the whole metalworking practice, whether it is fitter or machining, teachers have been emphasizing safety issues. "Safe production and civilized construction" often echoes in our ears, reminding us to pay attention to safety.
Because it is an operating machine, it is much easier to process here than the fitter, but at the same time, the processing accuracy of parts here is much higher than that of the fitter. We are a little distracted, either because there are too many cars or the cars are eccentric, which makes us very headache. The basic operation of lathe includes the clamping of workpiece, the selection of cutter, the change of spindle speed by shifting gears, and the mutual cooperation of left and right hands in cutting and feeding. There is an old saying: "Practice makes perfect". We cultivate the skills of operating lathes through repeated failures and repeated exercises. Our hands become very coordinated in the operation process, and we can flexibly adjust the rotation speed and control the feed. Finally, through our skilled technology and unremitting efforts, we create exquisite parts. In addition to lathes, we also contacted milling machines and planers, both of which are used to process planes. With the teacher's careful explanation, we have mastered the operation methods of these machines now. According to the teacher's words, this will be very helpful for our future employment, because now enterprises are not interested in what you are, but what you will do.
These days' practice has taught me a lot, and practice is an effective way to cultivate students' practical ability. It is also a very important and meaningful practical course for our college students and engineering students. Metalworking practice is another opportunity for us to actually master knowledge. Without a rigorous classroom environment, what we know is the production mode and technological process of modern machinery manufacturing, and what we feel is the atmosphere of the workshop. At the same time, we feel more about the significance of being a worker, which makes us more aware of our responsibilities. Although sometimes we are really tired and hard, our hands and feet are sore and we don't get enough sleep, these are actually exercising us and laying a solid foundation for us to adapt to work as soon as possible after going out. I feel that this metalworking internship is quite necessary for us, because everyone will come into contact with these machines more or less in the future. If we don't study today, we may have to pay a high price for studying in society in the future.
In practice, theory and practice are very important, and they should be combined. Sometimes, if you don't have a theory, but you can't find a chance to practice, then no one will recognize your ability, and even simple things should be practiced seriously. At the same time, sometimes we underestimate the theoretical knowledge too much, thinking that we can master it, thinking it is very simple, and the teacher didn't listen carefully when explaining the demonstration, so that we made mistakes from the beginning. So I think the two should be balanced and permeated with each other.
In practice, our role is workers, so we should be more aware of our responsibilities. As workers, the most important thing is to abide by various rules and regulations and operate the machinery correctly under the premise of safety, so as to produce products that meet the standards. So in the process of internship, one word is very important, and that is safety. The fitter teacher said, "I didn't ask you to master all the fitter's skills in this week, which is impossible, but there is one thing that must be done, that is, safe production and civilized construction!" " Therefore, before construction, we must understand the safety issues that should be paid attention to in each type of work, such as not fooling around during operation, not tying long hair, not wearing slippers and so on. There are many safety requirements for various types of work. For example, locksmiths are allowed to wear gloves, but turners must not wear gloves.
There is also a very important attitude. Since you are a worker, you have to look like a worker. Attitude is everything. Attitude should be correct first. Every factory has its own rules and regulations. When you enter an enterprise, you must abide by their rules, such as the commuting system. Many students become old-fashioned on the first day of internship. They were late for work, ran away from work and completely ignored the internship. I am glad that the university has offered such a course for me.
Another thing I learned in my internship is the spirit of unity. In a small room, sometimes a machine needs a lot of people to operate, and we need to have enough tacit understanding, clear division of labor and coordination in production. In a big sense, everyone works in the same factory and should help each other. During the internship, students sincerely encourage each other to refuel and share the pressure of work and the joy brought by success. Metalworking practice is more like a collective activity, which has narrowed the distance between us and filled the gap that once existed. The charm of collectivism is vividly displayed!