2014 Metalworking Internship Summary

Metalworking Internship Summary

We conducted a five-day metalworking internship at the school's school and factory. Today is the last day of the metalworking internship. During the period, we were exposed to six types of work such as car, clamp, milling, grinding, welding and casting. Every day, everyone has to learn a new skill. During the 30-hour internship, the process of making a finished product from the ignorance of each type of work was completed. Under the patience and meticulous teaching of the teachers and our positive cooperation, we did not have an injury accident, basically met the expected internship requirements, and successfully completed the 5-day metalworking internship.

"Metalworking Internship" is a practical technical basic course. It is an important compulsory course for engineering students in engineering colleges to learn the basic techniques and techniques of mechanical manufacturing and complete basic training. It not only allows us to acquire the basic knowledge of mechanical manufacturing, understands the general operation of mechanical manufacturing, improves its operational skills and hands-on ability, but also strengthens the theoretical and practical training, improves engineering practice ability, and cultivates engineering quality. . I know a lot through this short and substantial internship.

CNC lathe

Our first type of work is the operation of a CNC lathe. It is through programming to control the lathe for processing. Through the operation and programming of the CNC lathe, I deeply felt the convenience, accuracy and speed of the digital control. As long as the correct program is input, the lathe will perform the corresponding operation. The number of car programming requirements is very high, and a wrong symbol can cause several cars to run. Programming is not very difficult for me. Since I am learning network programming myself, I feel that there is no obstacle at first, and I will come up with a feasible solution in a short time. Although the program was not implemented, in the computer simulation process, I can fully feel the great creativity generated by the combination of technology and actual production process.

welder

The second type of work we studied was the welder. We were exposed to arc welding during the internship. By observing the operation of the master and the arc welding operation of the iron plate, I understood the principle and operation of the welding, understood the precision requirements of some welding, and learned not only.... exercised my courage and psychology. .

fitter

In the internship internship, we know that the main contents of the fitter are scraping, drilling, tapping, sawing, boring, assembling, scribing; understanding the construction, classification, selection, boring posture, boring of the boring tool Method and quality testing. 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.

Then there are scraping, grinding, drilling, reaming, tapping, and so on. Although not very standard, it is the result of our sweat, the result of our struggle for two days.

The internship of the fitter is very boring. It may be a morning, but it is a reversal of an action, but also a force, but also to do it, that is, holding the file on the workpiece back and forth, At noon, the whole person's hands were sore and sore, and the legs also stood a little stiff. However, when they were tired, they could see the teacher guiding them and personally demonstrate that he was also full of sweat and panting. I see that this gives me motivation every time. 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.

Cast molding

The next type of work is casting, and the classmates who finished listening said that this is a difficult job! Let the sand and mud that have no shape become what we want is to have a good brain, it needs Not only our physical strength, but also our patience, we must not be sloppy!

Casting molding, it can be said that it is completely aftertaste of playing sand. But this time, besides that impulsive heart, what is more needed is to be careful and patient. It seems that the simple four-step 1 made sand type 2 sand-type 3 dozen vents 4 out of the box and the mold. But if you want to make a model that makes everyone stunned, it is impossible to get through the rectification. Sometimes a wonderful pen can produce flowers, but sometimes it is because of your little repair that you can't give up! We are tired of back pain in the morning, but when we see the results of our hard work, I don’t think so. What counts! Just that we don’t believe our own eyes, so a bunch of things can be so beautiful under our careful processing.

Unforgettable turner

The lathe is not done by numerical control, it requires a high degree of manual operation.

First of all, the teacher told us to read the book while watching the lathes familiar with the various components of the lathe. The lathe is mainly made up of gearbox, headstock, hanging wheel box, feed box, slide box, knife holder, tailstock, bed, screw, light. The bar and the joystick are composed. The lathe is operated by various handles. The teacher explained the function of each handle to us, and then let us machine two main wheels and two large wheels. 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 need to make the diameter of the given cylinder from 20MM to 19MM, then use the two-wheeled knurling knife to emboss the surface of the cylinder. Switch to the cleavage knife to cut the cylinder. 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 eager to make the diameter of the shaft small! I am distressed, I would have counted Successful products are thus destroyed by themselves. Miserable! The most uncomfortable thing is to stand for a whole day, the calves are hurting. But the joy of success when handing the good parts of the car to the teacher makes me forget that I have a painful calf. This joy of success Only by attending an internship can you feel it.

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. China's current education system makes the hands-on ability of college students who enter the university through the college entrance examination weak. Therefore, universities in the transitional stages of school and society have taken on the task of cultivating students' practical ability. Metalworking internship is an effective way to cultivate students' practical ability. Based on this, students must give enough attention to this course, make full use of this month's time, and improve their hands-on 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.

Metalworking Internship Summary

The two-week metalworking internship is over. Just like military training, there is hard work that can't be said, and there is joy that can't be forgotten. I started class this week. I didn't have the internship during the day, but the students who looked at the electromechanical majors also went to the internship with us for the first two weeks. I also had a special aftertaste. Under the patient's patience and meticulous cooperation, we did not have an injury accident, basically met the expected practical requirements, and successfully completed the two-week practice. "Metalworking Internship" is a practical technical basic course. It is an important compulsory course for engineering students in engineering colleges to learn the basic techniques and techniques of mechanical manufacturing and complete basic training. It not only allows us to acquire the basic knowledge of mechanical manufacturing, understands the general operation of mechanical manufacturing, improves its operational skills and hands-on ability, but also strengthens the theoretical and practical training, improves engineering practice ability, and cultivates engineering quality. . I know a lot through this short and substantial internship.

Most students in science and engineering in most schools have to do metalworking internships. Students who are professional in the control profession naturally have to undergo this process of exercise, but I did not expect it to come so fast, then suddenly, I thought we were going to follow The row of confusing homework classes went to class. I didn't expect the first lesson to be a metalworking internship. There were surprises and fears. The surprise was that the legendary metalworking internship finally came to us. Its arrival made our curiosity greatly satisfied. On the other hand, the fear is because I don't know what the internship looks like, whether it is as dirty as the legend, so tired.

Knowing that we are going to the metalworking internship, we have all come up with the "pressing box treasure" - military training uniforms, because the military training suits are resistant to dirt and wear, so we become our preferred "work clothes". On the first Monday of the week, in the early morning, we wore military uniforms that faded into white and set off to the metalworking internship factory behind the third district. We also saw many people wearing the same clothes as us, and everyone agreed. Going to the factory, it makes me seem to return to the military training life of the last semester. We learned from the teacher that the internship lasted for two weeks. In the past two weeks, we had to learn two major items: fitter and machine. In the first week, we had to learn the fitter. The teacher called all the students at the factory door and said After some introductions, let us move the chair to sit down at the door, and then put a piece of information about the fitter, the film is quite old, I can see that some ages, and the most important thing is that there are no subtitles, all of them are It’s a layman. I haven’t touched the machinery and equipment, plus no subtitles. This undoubtedly makes it harder for us to understand and understand the work of the fitter. Fortunately, in the following days, the teacher explained the comparison, and later When I went back to the dormitory, I went to Baidu to check it out, so we had a thorough and intuitive understanding of the fitter. The fitter is a manual work in cutting, mechanical assembly and repair work, because the vise is often used on the bench. Named after the workpiece operation. The fitter's use range is extremely wide. The main task of the fitter is to machine the parts. Some machining methods that are not suitable or can not be solved by mechanical methods can be completed by the fitter, such as scribing, precision machining, inspection and repair in the parts processing. In addition, the fitter is used in assembly, maintenance equipment, tool manufacturing and repair. It can be seen that the fitter is inextricably linked to our life and production, so it is necessary for a science and engineering student to go to the internship to contact the fitter. In the video and teacher's explanation, we also learned that the fitter is the oldest metal processing technology in machinery. It has a long history. Although the development and popularization of various machine tools have gradually made most of the pliers work mechanized and automated, the fitter is still the basic technology widely used in the mechanical manufacturing process. Pliers work mainly includes boring, boring, sawing, scribing, drilling, reaming, tapping and threading, grinding, correction, bending and riveting.

As we first understand the fitter, the next step is the actual operation. We must know that only theory can't be practiced. So under the guidance of the teacher, a large group of people entered the factory, which has many large tables, each with a lot of tables. There are four worktables on both sides of the table. There is a wire mesh in the middle of the table to prevent the iron scraps from flying out to the opposite workbench during the processing operation. A bench vise is assembled on the workbench. There is a toolbox on the side, which is actually a drawer with the tools needed for our internship. The teacher told us to find their own workbench, and then open the toolbox to check if the tools inside are missing or damaged. When I open the drawer, I see a lot of dark things, horizontal Vertical, round and flat, most of them look like I don't know. Fortunately, there is a list of tools, which are identified by one of them. Our task is very simple, that is, a round iron column is processed into a hex nut. Because most of the fitters are manually operated, we are very hard at the beginning without training. The hands are broken, but we are honing. I am constantly familiar with it and know how to use the tool correctly. Due to the correction of the operation method, we are not so hard. By the fourth day, the nut in the hand had been formed, at least in my opinion, it was completed. The completion of the nut is an encouragement to my hard work these days. I feel very fulfilled because I saw the finished product I made in the factory for the first time in my life.

Because of the quick adaptation, the time slipped away unconsciously, and the one-week fitter internship soon passed. The next step is the machining internship. Compared to the fitter, the machining of the "big behemoths" makes our curiosity burst out instantly, but at the same time the danger of machining is much greater than that of the fitter, because those cold freezes The guys have no feelings, and the strength is not what our physical bodies can compare. In fact, the entire metalworking internship, whether it is fitter or machining, the problem that teachers have been emphasizing is safety. "Safe production, civilized construction" often echoes in our ears, reminding us to pay attention to safety. Because it is the operating machinery, the machining side is much easier than the fitter, but at the same time, the precision of the machining of the parts is much higher than that of the fitter. It’s a bit of a distraction, not the car is too much, the car is biased, let us It is a headache. The basic operation of the lathe includes the clamping of the workpiece, the selection of the tool, the change of the rotational speed of the spindle of the lathe by shifting, the mutual cooperation of the left and right hands during the walking and feeding. There is an old saying: "Practice makes perfect." In the repeated failures, we cultivated the skills of operating the lathe in one exercise. The two hands became very harmonious during the operation, and the turning speed and control feed were flexibly adjusted. Volume, and finally through our skilled skills and unremitting efforts to create a beautiful piece. In addition to the lathe, we also contacted the milling machine and the planer. They are used to machine the plane. We have mastered the operation methods of these current machines under the teacher's careful explanation. According to the teacher's words, this is very important for our future employment. It's helpful, because now what the company is looking at is not what you are, but what you will do.

These days of internships have taught me a lot, and practice is an effective way to develop students' practical ability. It is also a college student, a college student, and a very important and practical class. Metalworking practice is another opportunity for us to grasp knowledge practically. After leaving the rigorous environment of the classroom, we understand the production methods and processes of the modern machinery manufacturing industry. We feel the atmosphere of the workshop. At the same time, I feel more of the mood of a worker, which makes us more aware of the responsibility. Although sometimes it is really tired and hard, the hands and feet are sore and the lack of sleep, but these are actually training us, laying a solid foundation for us to get out and adapt to work as soon as possible. I feel that this metalworking internship is quite necessary for us, because everyone will be exposed to these machines more or less in the future. If you don't study today, you may have to pay a lot of money to study in the society.

In the internship, theory and internship are very important. The two must be combined with each other. Sometimes you have the theory, but you can't find the opportunity to practice. Then no one will recognize your ability, and then you should practice it carefully. At the same time, sometimes we are too ignorant of theoretical knowledge, thinking that we can master it, I feel very simple, did not listen carefully when the teacher explained the demonstration, and even made a mistake when doing it. Therefore, I believe that the two should be balanced and infiltrated. In the internship, our role is workers, so we should be more aware of the responsibilities that we are shouldering. As a worker, the most important thing is to comply with various rules and regulations, operate the machinery correctly, and produce it under the premise of safety. A product that meets the standards. Therefore, in the process of internship, it is very important to have a word, that is, safety, the teacher of the fitter said: "I did not ask you to master all the skills of the fitter in this week, which is impossible, but there is a little Must be done, is safe production, civilized construction!" So before construction, we must understand the safety issues that every type of work should pay attention to, such as not being able to play during the operation, long hair to be put up, not wearing slippers, etc. Wait. There are more safety requirements in various types of work. For example, the fitter is allowed to wear gloves but the workman must not wear gloves.

Another important thing is attitude. Since it is a worker, it must have the appearance of a worker. The attitude determines everything. The attitude must be correct first. Each factory has its own rules and regulations. When entering a company, we must abide by their rules. As for the off-duty system, many students became old fritters after the first day of internship. They arrived late at work, slipped off work, and completely looked at the internship. I am glad that the university has such a course for me to go. Internship, study, because you are still a student at school, if you don’t study here, going to the society to learn things sometimes costs a lot.

In the internship, one of the things I learned is the spirit of solidarity. In a small way, sometimes a machine needs more people to operate. We need to have enough tacit understanding, the division of labor should be clear, and we must be consistent in production. To the big picture, everyone works in a factory, and they should help each other. During the internship, there is no selfish help among the students, sincere encouragement and mutual encouragement, all the pressure to share the work, and share the joy brought by the success. The metalworking internship is more like a collective activity, bringing us closer to each other and filling The barrier that once existed, the charm of team spirit has been thoroughly revealed!

Metalworking Internship Summary

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.