Tisch
In a blink of an eye, the two-year study of fitter theory and practice is over. Although I am very tired and bitter during my internship, I feel very happy! Because I learned the necessary knowledge of locksmith and also exercised my hands-on ability. But also let me deeply understand the great poet-Li Bai's famous saying: as long as the kung fu is deep, the iron pestle is ground into a needle! Through the teacher's explanation. I finally understand what a locksmith is. At the same time, I understand why some people say, "Being a fitter is the most tiring!"
Fitter practice is an effective way to cultivate students' practical ability. It is also a compulsory course for our future senior technical workers, especially students who study mechanical assembly and maintenance locksmith. It is very important and meaningful. The fitter's internship is another opportunity for us to actually master knowledge. Without the rigorous environment in the classroom, we will feel the atmosphere in the workshop. At the same time, we feel more about the significance of being a worker, which makes us more aware of our responsibilities.
This is undoubtedly a transition between theory and practice, from safety education, action essentials, the use of tools, to the actual operation of taking files. Some things are to be explored by yourself, and some things are to be discovered from theory and applied to practice. From the beginning of polishing the plane, I understood that it is not that simple to do a good job, and it needs to be proved by practice. What you see is not necessarily true (the plane looks flat, but its shortcomings can be found by measuring light); This reminds me why the school wants us to practice here, because the school wants us to understand the value of learning. Learning needs the same meticulous spirit as polishing an airplane, and it also makes us realize the importance of hands-on. It's not enough to just study theory. Without practical experience, you can't find your own practical ability, which requires the combination of theory and practice. It needs the cooperation of mind and hands.
From plane grinding to scribing and dot; From shaping to drilling; From reaming to tapping, what I learned at every step was something that others could not take away. From here, I know what a fitter is. The main contents of a fitter are marking, chiseling, filing, grinding, drilling, reaming, reaming, tapping and so on. Understand the structure of the file; Classification, selection, filing posture, filing method and quality inspection.
Fitter practice has trained us and improved our overall comprehensive quality, which not only makes us deeply understand the significance of fitter practice, but also improves our practical ability, so that we can better combine theory with practice. Consolidate what we have learned, and at the same time let us learn the professional quality of teachers. The teacher took pains to find out the mistakes in our homework for us. We also carried forward the spirit of unity and mutual assistance and enhanced the friendship between our classmates.
During the internship, we achieved the fruits of our labor-exquisite nuts. Looking at this exquisite work, it turned out to be polished by myself, and my pride and sense of accomplishment are hard to express in words. I didn't expect that something that was so big at the beginning has now become a beautiful workpiece and has been ground out at once. This is what people say, "As long as you work hard, the pestle can also be ground into a needle"!
The locksmith's internship was short and hard, but what he learned was valuable, which made me realize the hardship and happiness of being a worker and consolidated my knowledge, which left me with good memories.
After such a three-week locksmith internship, what I learned and realized was not available to teachers in class. What is "practice makes true knowledge"? No matter how good your theory is, it will be of no help if your practical ability is poor. I believe that after this locksmith internship, I will lay a solid foundation for the next internship as a lathe worker and welder in a great sense.
extreme
The two-week locksmith training is over. Although we are very tired in training, we are very happy because we have learned a lot of useful things and exercised our practical ability. Although the training period is only two weeks, it is only a small part of our three-year college life, but it is a very important part. It's hard for us to forget. After all, it is a real experience of society and life.
Important safety
To carry out locksmith training, safety issues must be put in the first place. Through the master's explanation, we learned about the dangerous operation actions that students are easy to make in training. For example, fooling around in the workshop, operating the machine tool without the permission of the master, incorrect operation method and posture, and so on. An unintentional action or a small negligence may lead to mechanical accidents or even personal safety accidents.
Through this locksmith training, I learned the basic knowledge and operation methods of metalworking. Mainly learned the following knowledge: the basic types of metal processing are fitter, lathe worker, casting welder and so on.
Item 1
In the training of locksmiths, we know that the main contents of locksmiths are scraping, drilling, tapping, sawing, filing, assembling and marking; Understand the structure, classification, selection, filing posture, filing method and quality inspection of archives. First of all, we must get the right gear. It is the key to keep the file moving in a straight line when filing the plane. There are two kinds of filing force: horizontal thrust and vertical pressure. When pushing the file forward, the front hand pressure gradually decreases, and then it decreases when pushing the file to the middle position, and the pressure on both hands is the same. When pushing the file forward, the front hand pressure gradually decreases and then increases. No pressure is applied when the file is returned. This will make it easier for us to file. At the same time, I also know that the locksmith's safety technology is: 1, and the bench should be placed in a place where the work is convenient and the light is suitable; Drilling rigs and grinding wheels should generally be placed on the edge of the site to ensure safety. 2, the use of machine tools, tools (such as drilling machine, grinding wheel, hand drill, etc. ), should be checked regularly, found damaged shall not be used, need to repair the rear can use. 3. When the vise clamps the tool, it is not allowed to use a hammer to beat the handle or steel pipe of the vise to exert clamping force.
Then scrape, grind, drill, hinge, tap and so on. Although it is not very standard, it is the crystallization of our sweat and the result of our two-day struggle.
To tell the truth, locksmith training is boring. He may have been doing an action repeatedly all morning, but he should be strong and do it just right. That is, a file that goes back and forth on the workpiece with a file. By noon, the whole person's hands were sore and his legs were stiff. However, when he is tired, he can see the teacher personally guiding and demonstrating. He is also sweating and panting. A few days later, looking at my own processing results, I want to say thank you to the teacher who guided us.
Item 2: Simple lathe work.
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. The lathe is operated by each handle. The teacher explained the function of each handle to us, and then let us process a spindle, two small wheels and two big wheels. The teacher first demonstrated the operation method, processed a part, and then let us start processing. One of the most important aspects in lathe machining is the selection of suitable tools. First, we need to turn a file handle. This is a real test for people like us who have never used lathes.
I kept turning the horizontal and vertical control handles and carefully processed them all afternoon. When I thought I was almost the same, I was ready to make the final cut, but I rashly reduced the diameter of the arc! I am heartbroken and painful! The most uncomfortable thing is that my calf hurts after standing for a day. But when I handed the car parts to the teacher, the joy of success made me forget to stand and hurt my calf. This joy of success can only be felt by personally participating in the training.
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 have no chance to verify the actual gap. Locksmith training gives us an opportunity to master knowledge and feel the workshop atmosphere without the rigorous environment in the classroom. 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. Fitter training is an effective way to cultivate students' 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 locksmith training, 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 training often has high labor intensity and low technical content, but some basic knowledge can be applied in practice.
Tisso
In the next semester of the 20xx academic year, we conducted a two-week metalworking practice in the training center of the old campus. During this period, I was exposed to the basic operation skills and safety technology courses of fitters and welders. Learn a new technology every week, and you can complete the process from knowing nothing about all kinds of work to making one or two finished products in a few days of internship. With the patient and meticulous teaching of teachers and our active cooperation, we did not have an injury accident, basically met the expected internship requirements and successfully completed the two-week internship.
During the internship, we made our own handicrafts by learning from fitters and welders. The fitter is the hardest and the fitter is the most tiring. The fitter mainly relies on manual operation and uses various tools to complete the processing, assembly and repair of parts. Compared with machining, it has high labor intensity and low production efficiency, but it can complete the work that machining is inconvenient or difficult to complete, and the equipment is simple, so it is still an indispensable and important type of work in mechanical manufacturing and repair. In the practice of locksmith, we know that the main contents of locksmith include drilling, tapping, tapping, sawing and filing, the structure, classification, filing posture, filing method and quality inspection of file, and the position and important role of locksmith in machine manufacturing and equipment maintenance.
The fitter's factory equipment is relatively simple, because most of them are manual labor. On this day, we will make a 36mm nut in order to familiarize us with the basic work operation of locksmith and exercise our hands-on ability and will. From breaking the iron plate to filing the parallel surface, from punching to screwing, it is not an easy job. Just watching the teacher's demonstration, we were all dumbfounded. Is it possible? Is it necessary to stage a modern version of the iron pestle grinding into a needle?
Because of the time, the teacher didn't say much, but introduced the usage of vice, file and saw. Then let's process a nut with a diameter of 36mm with iron plate, smooth the six surfaces of the nut with a file, drill holes, and finally make six chamfers. After listening, my heart thumped. How long does it take for an iron plate to be processed into nuts? First, clamp the iron plate under a section with a long diameter with a hand saw. According to Ytier, it is not easy. It is necessary to master certain methods. Hold the handle in your right hand and the bow in your left. Thrust and pressure are mainly controlled by the right hand. Pay attention to the pressure on your left hand. The standing posture is that the right front part of the body forms an angle of about 45 degrees with the center line of the vice, the right foot forms an angle of 75 degrees with the center line of the vice, and the left foot forms an angle of 30 degrees with the center line of the vice. Only by using the correct method can we save manpower and improve efficiency. Then draw the size of the nut with a ruler, and finally finalize the nut. After the document is finished, it is followed by six sides. It is not easy to flatten the uneven side. We also need to master the correct methods. The key is to keep the file moving horizontally, which can be achieved by gradually adjusting the pressure of both hands during cutting. In the process of cutting, it is necessary to check whether it is flattened with a square ruler from time to time. After the defeat, I went on to defeat other parties and worked for more than three hours. Finally, six sloppy ones were dealt with. The next step is drilling and tapping, which is not an easy job! Everything should be done carefully according to the steps, and in the end, there are many good things to grind! A few days later, although many students had blisters on their hands and felt sore all over, it was the first time for everyone to see the finished products made in the factory, and they were overjoyed and had a great sense of accomplishment.
Internship experience:
① This internship enables us to cultivate, improve and strengthen our engineering practice ability, innovation consciousness and innovation ability in the process of understanding, being familiar with and mastering certain engineering basic knowledge and operation skills.
② We have cultivated and exercised our views on labor, quality and economy, enhanced our awareness of observing labor discipline, safety technical regulations and caring for state property, and improved our overall comprehensive quality. Metalworking practice plays a comprehensive training role in cultivating our engineering quality and ability, which requires us not only to learn the basic process knowledge of each type of work, understand the equipment principle and working process, but also to strengthen the training of practical ability, and to have the ability to analyze and solve simple process problems by using the learned process knowledge.
(3) In the whole practice process, we have strict discipline requirements, formulated the rules for students' practice, and strengthened the requirements of filling in the practice report, cleaning the work site, and observing the safety operation rules of work types, which has played a good role in promoting the cultivation of students' comprehensive engineering quality.
(4) The teacher of the training center announced the grading standards of our processed products to us, which made us have a clear understanding of our own product grading and played a certain role in improving our quality awareness. For our metalworking practice results, a comprehensive evaluation system is implemented, and the usual results+product quality results+comprehensive assessment results = total results. Let us take every job and every practice link seriously.
During my internship, I was deeply touched. Thank you very much for providing us with this internship opportunity, 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. The two-week metalworking practice brings us not only the operational skills we are exposed to, but also the ability we need to exercise through several types of work. More importantly, we need each of us to feel, reflect, work hard, encourage ourselves and gain something after practice, so that this practice can achieve the real goal.