[Boutique] Metalworking Internship Summary Report

This article directory 1 metalworking internship summary report 2 metalworking internship summary report 3 metalworking internship summary report first: metalworking internship summary report

After 24 days of metalworking, the internship was over. Under the patience and meticulous teaching of the teachers, we learned the "manufacturing foundation and safety", "Slidworks", "turning workers", "fitters", "casting, mechanical disassembly", " Planing, grinding, "CNC machining and testing", "milling", "CNC", "Electrical processing", "Laser processing", "Plastic molding and forging", "Welding", complete from all types of work I don't know anything about the process of making a finished product. After the internship, I feel that the internship life is different from what I had imagined before. Internship is not a simple matter. It is not our holiday. It is not an easy task, but a laborious task. In the meantime, I learned a lot of things that I couldn't learn in the classroom and got a workout on the quality of the will. Although I was very tired and bitter during the internship, I was very happy! Because we learned the basic knowledge necessary as a mechanic, we also exercised our own hands-on ability.

I feel that 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. In the classroom, we feel the importance of hands-on ability. Only by thinking and figuring in the brain can we not complete the actual work. 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.

Now I want to analyze my inner world through some details in the metalworking internship. After learning the "Basic Manufacturing and Safety" and "Slidworks", we entered the main event of this metalworking internship, and reached the stage of "hands-on" and "brain-moving".

The first item - "turning workers"

When we first arrived, we were particularly excited about the first internship and a little fanaticism. Maybe the teacher wants to give us a horse! When we stepped into the internship, we felt that the teacher was sloppy, and the conversation showed a strong majesty. But the so-called strict teacher is a high-profile, but this is because the teachers are responsible for our seriousness, emphasizing the safety and accuracy of the operation, paving the way for our successful completion of the task.

The lathe is the most commonly used type of machining. Whether it is mass production in batches, small batch production and mechanical maintenance, turning machining plays an important role. Turning is first to install the tool. The tool to be installed should be noted:

1) Point the tip to the top of the tailstock to ensure that the tip is at the same height as the axle. The shank should be perpendicular to the working axis. 2) The length of the cutter head is less than twice the thickness of the cutter to prevent vibration during turning. 3) The tool should be placed, placed, and clamped.

4) After loading the workpiece and the tool, check whether the machining limit position interferes or collides. 5) When disassembling the tool and cutting, remember to lock the square tool holder first. After the knife is installed and the knife is cleaned, the turning process begins.

When the end face of the car, the turning tool, the square tool holder and the bed saddle should be checked and locked on the bed. Use a small sliding plate to adjust the amount of the backing knife to avoid the convexity and concave of the end face. Since the diameter from the outside to the center gradually decreases on the end face, the cutting speed is also gradually reduced, and the roughness value is large. So it is best to cut from the center outward.

Finally, the workpiece is cut off. The general considerations for cutting off the workpiece are:

1) The workpiece is generally clamped on the chuck, and the cut-off is as close as possible to the chuck.

2) When installing, the tool tip is at the same height as the workpiece axis, and there is a boss left at the cut-off point. The length of the cutting blade extending the tool holder should be as short as possible.

3) Minimize the gap between the movable parts of the skateboard, increase the rigidity of the tool holder, and reduce the deformation and vibration of the workpiece. 4) Manual feed should be slow and uniform, and the cutting speed should be low.

I feel that although the car mechanic does not need our great brute force, it requires us to concentrate a lot and temper the fineness of our work, so I think it is the most "powerful" of all types of work.

The second item - "fitters"

Among all the types of work, the fitter is the most labor-intensive. Through the tools such as boring tools and hacksaws, the primary machining hammers that we made during the turning phase are manually punched and tapped to make a beautiful hammer. Next, we selected some steel plates and designed the graphics we wanted. I first painted the five-pointed star on the steel plate with a pencil, clip it on the vise, and use the hand saw to move back and forth in rhythmically with the line drawn. This is a relatively kind of physical activity. It is really hard to master the postures and skills. Under the guidance of the teacher, we began to experience the feeling of “rope sawing and breaking”. First, we saw a small mouth on the starting line, then Holding the saw handle in the right hand, the left hand tiger mouth pressed the front end of the saw, pulling the saw blade at a constant speed, and the model in his mind gradually became clear, and the inner joy dispelled the soreness of the arm. The next step is to finish the sawed end face, first use the rough, then use the fine boring to make the five-corner heart of your design bright. In the afternoon, although many students have blisters on their hands, they are sore, but when they see the birth of their victory fruit, the inner joy is self-evident.

The third item - "casting, mechanical disassembly"

With the teacher's wise guidance and our savvy cooperation, the task was completed more easily. The fourth item - "planing, grinding"

Planing is to use a planer to machine the workpiece on the planer. We use the most commonly used planer. Grinding is a method of machining the surface of a workpiece with a grinding wheel at a higher linear velocity. The essence is the process of cutting fine chips from the surface layer of the workpiece by using abrasive on the grinding wheel. I think these two kinds of processing are relatively simple, and we quickly completed the task.

The fifth item - "welding"

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. And I remembered the whole set of equipment, handsome.

The sixth item - "plastic molding and forging" In this class, I came into contact with the modern advanced plastic molding machine and personally created two plastic stamps printed with the DGUT school badge, to understand the principle, process and some simple plastic molding. Operation. In addition, we also forged a metal round rod with a hammer. We first put the metal round rod into the electric heating furnace and heat it to more than 1000 degrees Celsius, then take it out with iron pliers and put it on an iron workbench for hammering. The surface should be knocked into a plane, when the forging is cooled to a certain temperature. When the deformation effect of the hammer is weakened, we put it into the heating furnace to heat it and then take out the heating. This is repeated several times, and finally the forging is processed into a rectangular parallelepiped. In addition to the above, we also contacted the metal sheet right angle forming machine.

The seventh item - "milling"

We learned milling. The original milling method is to use a milling cutter to cut the workpiece on the milling machine. The milling machine has horizontal and vertical points. We use a vertical milling machine. I think it is quite easy to carry out milling.

In addition, we also learned "electric machining", "laser processing", "CNC car", "CNC machining and testing". For a college student, especially a science and engineering college student, the combination of practice and theory is particularly important, and the internship directly provides this bridge, which allows us to apply what we have learned from books, but also let us I learned something I couldn’t learn from books.

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. In the classroom, we feel the importance of hands-on ability. Only by thinking and figuring in the brain can we not complete the actual work. 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.

Practice is the test of truth. After more than three weeks of metalworking practice, I learned a lot of work common sense, and I also got the will to exercise, and I have both bitterness and happiness. This is another valuable wealth in my university life. The study and work will have a big impact.

Soon we will step into the society and face employment. The employment unit will not tell us the work to be done in a nuanced manner like a teacher. More is that we need to observe and learn by ourselves. Without this ability, it will be difficult to meet the challenges of the future. With the rapid development of science and the wide application of new technologies, there will be many areas that we have never touched before. Only dare to try to make breakthroughs and innovations. Just like the car workers we are exposed to, although it is very dangerous, it requires every student to operate and to make finished products, thus exercising the courage to dare to try. The one-week metalworking internship brought us not only the operational skills that we have come into contact with, but also the several abilities that we are required to exercise through several types of work. More are required by each of us after the internship. I have to go to my own situation to reflect, to reflect, to be self-satisfied, to gain something, so that this internship has achieved his true purpose.

In addition, I also want to make a small suggestion for this metalworking internship. I think the size of the machine in our internship is not too big. It is understandable that the starting point for the school to buy a large machine is to make our internship close to the factory and lay the foundation for us to step into the society. However, the drawbacks of this are also revealed. The high price of large machines has led to a large group of students sharing a machine tool, which greatly weakens our operation time on the machine, reduces the utilization rate, and also causes us to use tools. The familiarity of the machine has been greatly reduced. Therefore, I hope that the school will consider that we can use the limited time to get the most familiarity with the machine tool, so that we can buy some small machine tools like the lathe machine tool, so that everyone can have time to do it. There is a machine tool for operational purposes.

Part 2: Metalworking Internship Summary Report

From April 16 to April 22, 2012, our hydrology and water resources engineering major conducted a one-week metalworking internship. Because we are excited to participate in the metalworking internship for the first time, it is inevitable that it will be a bit stunned. Due to the ignorance of internships and metal processing, we are a bit overwhelmed, but after a week of internships, I found that the harvest is really too big, the vision is more open, and I have a more comprehensive and deeper understanding of production practices. At the same time, it adds to my self-confidence in the face of fierce social competition in the future.

During the period, we were exposed to sawing, boring, drilling, turning, milling, and planing. Every day, everyone has to learn a new technology, and in the 6-hour internship time, complete the process of knowing nothing about each type of work to produce a finished product. Under the patient's patience and meticulous cooperation, we did not have an injury accident, basically met the expected internship requirements, and successfully completed a week of cognitive 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. . This is a good opportunity for us to learn and exercise! I know a lot through this short and substantial internship.

On the first day of the start, we were excited and rushed to the engineering training center. The content of the first day is relatively simple, but it is also very important. It is the teacher who explains the content of the internship and what should be noted. In industrial production, safety is the first priority, it is vital! This is the first advice the teacher gave us. in

On the first day, we were arranged to open a safety report before the internship. Watched the video of the relevant parties. The internship requirements and safe handling of many types of work were thoroughly recorded in the video. Looking at the complicated machine that was born and operated, there were many accidents that occurred because the machine was not operated as required. We were all shocked. I really don't know what to expect. A look of shock! An unintentional movement or a small negligence can lead to mechanical accidents and even personal safety accidents. Before the safety incident occurred, many people did not pay much attention to safety education. They thought it was too cumbersome and too boring. Once an accident has occurred, there will be a lot of things afterwards.

In these ten days, we have almost touched the various types of metal processing, and what milled mills, cast and forged welds, car drills, etc. are all in contact. We also visited the factory floor to visit more types of work. It really benefited me a lot. I used to know a lot about metal processing. With the rapid development of science and the wide application of new technologies, there will be many areas that we have never touched before. Only dare to try to make breakthroughs and innovations. Just like the lathe we are exposed to, although it is very dangerous, it requires every student to operate. This will exercise the courage that everyone dares to try. The ten-day metalworking internship brought us not only the operational skills we have come into contact with, but also the ability to exercise through several types of work. More people need each of us to actually work after the internship. I went to realize myself, to reflect, to be self-satisfied, to gain something, and to make this internship achieve a real purpose.

Finally, I would like to thank the teachers of the Engineering Training Center and the teachers of the mechanics for giving me the opportunity of this internship and the guidance to me!

Part 3: Metalworking Internship Summary Report

The two-week metalworking internship was successfully completed. In general, this two-week internship is an interesting and influential experience that will affect my future work. Under the patience and meticulous teaching of the teachers and our positive cooperation, we did not have an injury accident and basically met the expected internship requirements. After all, safety is the first. “Metalworking Internship” is a practical technical basic course. It is the basic process and technology for engineering students in colleges and universities to learn mechanical manufacturing. It is an important compulsory course for completing basic engineering training. During the internship process, we initially understood and mastered the essentials of the various operations required for the 10 types of work, as well as the ability to independently produce simple parts. It not only allows us to acquire the basic knowledge of mechanical manufacturing, understand the general operation of mechanical manufacturing, improve our operational skills and hands-on ability, but also strengthen the theoretical and practical exercise, to experience how everything around us is manufactured. The following are some of the experiences I gained during my internship.

Engineering training safety knowledge

As we all know, safety is the first in industrial production! This is the first advice every teacher gives us. On the first day of the internship, we were arranged to watch a safety video to learn about safety precautions. The video contains detailed internship requirements and safe handling of many types of work, such as lathes, castings, etc. If we are slightly paralyzed or ignore certain details, it may lead to mechanical accidents and even personal safety accidents. Before the safety incident occurred, many people did not pay much attention to safety education. They thought it was too cumbersome and too boring. Once an accident has occurred, there will be a lot of things afterwards. After watching the video, we were in the workshop and listened to the teacher about the industrial safety. If you don't grasp it, you will not only be dismissed as ignorant, but sometimes there will be major accidents. Safety is always first, we are deeply in mind, careful and careful operation, so we have safely passed the safe two-week metalworking internship.

Wire cutting

The first type of work is wire cutting, which is an electric machining machine that cuts metal by electrocorrosion with molybdenum wire. Wire EDM, sometimes called wire cutting. The basic working principle is to use a continuous moving thin wire as an electrode to perform pulse spark discharge on the workpiece to remove metal and cut. The EDM machine used is also numerically controlled and is also more convenient to operate. However, the seemingly simple type of work has the highest technical content. Workers must not only operate the meta-character equipment, but also understand the meaning of the digital sign, and write a program for the CNC lathe. 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. However, programming is not very difficult for me. The teacher's programming guidance is also explained in great detail. Soon I compiled the program to cut the thread size and length required according to the teacher's requirements, and successfully run it in the computer simulation CNC lathe program.

founder

The next type of work is casting. Casting is a process in which a metal is smelted into a liquid that meets certain requirements and poured into a mold, and after cooling solidification and finishing, a casting having a predetermined shape, size, and performance is obtained. Casting blanks are near-formed to achieve machining-free or small-scale processing, reducing costs and reducing time to some extent. Casting is one of the fundamental processes in the modern manufacturing industry. And in our class, we learn sand-making. To make those sands that have no shape become what we want is to make us move our brains. It needs not only our physical strength, but also our patience. It seems so simple four steps: 1 made sand type 2 made sand type 3 dozen vents 4 out of the box and mold. But if you want to make a model that makes everyone stunned, it is impossible to get through the rectification. All day, although we all gave us a lot of pain, but I was very pleased to see the results of our hard work.

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. According to the drawings, we showed us the processing of a small part that needs to be completed today, and gave us guidance. A very important aspect of lathe machining is to choose the right turning tool. The internship we used was equipped with three turning tools, and the thread cutting knife was not required. Our task is to produce small parts with a large diameter of 22mm, a length of 10mm, a small round diameter of 18mm and a length of 15mm. Fine operation requirements, careful and careful data calculation and analysis are all serious tests for students who have not done actual workshop workers. It is because of the lack of experience and patience that in the final step of the fine machining of parts, I cut the length of the small round part of the part by 0.02mm because of the urgency. It can be seen that although the lathe is not so tired, it is a fine work, which requires a high concentration of spirits and high technical requirements. Through the car mechanics internship, we are familiar with the basic knowledge of the lathe and the lathe process, mastered certain basic operational skills, have already used and operated the lathe initially, and also enhanced our hands-on ability and analysis of problems and problem solving skill.

Machining Center

The machining center, referred to as cnc, is a high-efficiency automated machine tool composed of mechanical equipment and numerical control system for machining complex-shaped workpieces. It can automatically change tools and perform multi-process machining on one-piece workpieces. After the workpiece is clamped, the numerical control system can control the machine tool to automatically select, replace the tool, automatically set the tool, automatically change the spindle speed, feed amount, etc. according to different processes, and can continuously complete various processes such as drilling, boring, milling, reaming and tapping. Therefore, the auxiliary process time such as workpiece clamping time, measurement and machine tool adjustment is greatly reduced, and the parts with complicated processing shape, high precision requirement, and frequent replacement of parts have good economic effects. During the internship, we learned some precautions. For example, we must abide by the safety operation procedures of the machining center. Before work, we should wear protective equipment and tie the cuffs. The female workers should be in the hat. The relative position of each button should be in accordance with the operation. Request, carefully prepare and input the NC program. 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, which will greatly improve the production efficiency.

planer

The planer internship started. Just like the previous internships, I took a theoretical class first. In the theoretical class, the teacher first emphasized the matters that should be paid attention to during the internship process. Secondly, it introduced the process characteristics and processing scope of the planing process, and introduced the working principle of the bullhead planer. Next, the teacher led us to the head planer, step by step to explain the various components of the planer, the drive, and teach us how to adjust the starting position of the stroke and other adjustment mechanisms, how to plan the plane; then the planing The whole process was demonstrated again. Due to the careful guidance of the teacher, we have kept in mind the problems that are noticed in the planing process, especially how to ensure the quality of the workpiece and improve the production efficiency. Next, the time has come for us to fully play. The teacher provided a piece of hexagonal iron. We cut the fine hexagonal workpiece. After measuring and calculating, we determined the size of the planing, plus our highly responsible attitude. After some struggle, we finally won the blank. Processing. With a vernier caliper, it is okay, within the tolerances required by the teacher. Through the internship, I learned the whole process of planing, understood the working principle of planing, understood the working principle and components of the planer, and was able to complete the measurement and processing of the workpiece separately, and ensure the accuracy of the workpiece. purpose.

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. Holding the sickle on the workpiece, I went back and forth. When I was at noon, the whole person’s hands were sore and sore, and the legs stood stiff. However, when I was tired, I could see the teacher guiding me back and forth. And personally demonstrate to each classmate on the workbench, it is really moving. Looking at our own processing results, what we want to say most is to thank our teachers.

summary

After a series of work such as wire cutting, casting, turning, and fitter, we finally completed this profound metalworking internship course. We know that it is impossible to fully grasp the technical operation of all types of work during the internship, but at least we understand some general processes of mechanical manufacturing, familiar with the common processing methods of mechanical parts, and should initially have the choice of processing methods, processing analysis and Ability to develop process procedures. What is more rewarding is the selfless help between the students, the sincere encouragement, the pressure to share the work, and the joy of success. The metalworking internship is more like a collective activity, bringing us closer to each other and enhancing collective cohesion. In just two weeks, we have fully experienced our experience in the internship: If we do not often participate in the internship in mechanical manufacturing, we college students may only be "paper talk" in the future. The society needs talents, and the society needs talents with the ability. In the new century, universities only participate in practice and apply what they have learned to ensure that they have their own position in the future social competition and better realize their own life value.