Three Summaries of NC Practice

In recent years, with the development of computer technology, digital control technology has been widely used in various fields of industrial control, especially in the field of machinery manufacturing. Because NC machining can make the machining industry develop in the direction of high quality, high precision, high yield and high efficiency, the most important point is that the existing ordinary lathe can be used for NC transformation, which can reduce the cost and improve the efficiency.

In recent years, China's position as the processing center of the world manufacturing industry has gradually taken shape, and the use, maintenance and maintenance personnel of CNC machine tools are in short supply in industrial cities all over the country. In addition, our mechatronics major also offers numerical control technology. In order to improve our employability, further improve our level of numerical control technology, and let us learn numerical control technology more clearly and truly, in the seventeenth and eighteenth weeks, we conducted a two-week numerical control internship in the school. Two weeks later,

Before I started my internship, I searched the internet for relevant knowledge and learned that numerical control technology refers to the technology of controlling one or more mechanical devices with digital instructions composed of numbers, characters and symbols. Usually control mechanical quantities such as position, angle and speed, as well as switching quantities related to the flow direction of mechanical energy. The appearance of numerical control depends on the appearance of data carrier and binary data operation.

Now, numerical control technology is also called computer numerical control technology. At present, it is a technology to realize digital program control by computer. This technology uses a computer to execute the control function of the equipment according to the pre-stored control program. Because the numerical control device composed of hardware logic circuit is replaced by computer, the storage, processing, operation and logical judgment of input data can be realized by computer software.

During the internship, the teacher patiently explained to us the usage of each instruction in the numerical control software. Under the guidance of the teacher, we quickly got started, stepped into the threshold of numerical control, and properly arranged some homework. We also take it seriously and earnestly complete every task assigned by the teacher. After completing the task, we also used our imagination to try to turn some parts with the patterns we wanted, and the effect was not bad.

Time always flies, and two weeks passed quickly. Junior year, about to enter the society, facing employment. The employment unit will not tell us the work to be done in detail like the teacher, but we need to observe, learn and summarize it ourselves. Without this ability, it is difficult to be competent for future challenges. With the rapid development of science and the wide application of new technologies, there will be many fields that we have never touched. Only by daring to try can we make a breakthrough and make innovations. The two numerical control internships brought us not only the operational skills we came into contact with, but also the ability that needs to be exercised through several types of work. More importantly, we need each of us to feel, reflect, encourage ourselves diligently and gain something after the internship, so that this internship can achieve his real purpose.

Summary of NC practice II

Through these months of study and practice, my mastery of intermediate CNC has changed from a hazy understanding at the beginning to a familiar understanding of machine tools now. For me, this kind of intermediate CNC training for machining parts is an improvement, a reference and a practice, which is of great benefit to my study in university.

This CNC intermediate training is mainly about pa system, including lathes and milling machines. I mainly practiced NC programming before summer vacation, but I prefer machine tool operation this semester. Through computer programming simulation and lathe operation, as well as processing parts. Have a certain grasp of the learning of intermediate CNC.

Personally, I am interested in a preliminary understanding of programming. From a little knowledge at the beginning to being familiar with using every command and understanding its meaning now, my constant exploration every day is closely related to the patient teaching of the teacher. Mainly summarize the following points:

First, the understanding and application of numerical control programming and simulation

It is an honor to have such a good teacher to teach us NC programming. In fact, the most important thing in learning is to practice more on your own, but at the key time, with the guidance of teachers, you make rapid progress. Especially when I first came into contact with programming and processing, I made great progress under the guidance of teachers. I remember that on August 9th, the teacher began to talk about the programming process, especially the frequently used codes, and then the understanding and calculation of the main points. Simulation of machining simulated parts. Through the study of these knowledge points, I gradually understand some basic essentials of NC programming. Tool alignment on the machine tool is a difficult problem I encountered before, because I am not used to using commands and have a poor understanding of basic feelings. However, through repeated practice, I am now familiar with the simulation system. Now I can read the map and know the cutting route. And the integral involved can be converted.

Second, the study and understanding of theoretical knowledge.

I carefully studied the information sent by my teacher. Of course, it is necessary to remember that there is still a certain gap in every knowledge point, but I am confident to learn the theoretical knowledge well. I think the most important thing is to understand every knowledge point, not to memorize it, because a lot of theoretical knowledge will be used in practical operation and must be mastered. Only by fully understanding the theoretical knowledge can we better complete the actual operation. For example, buttons on machine tools, tool paths, tool repair, etc. Both involve a lot of theoretical knowledge. Only by thoroughly understanding the theoretical knowledge can we seriously abide by the rules in the processing process and complete the processing of parts more safely.

Third, the actual processing and mastery of learning methods.

For the operation of machine tools, I always feel that I haven't practiced enough, especially the processing of parts, and I don't have a good grasp of the actual knife. Although I can process parts now, and the dimensions are properly grasped, the time control is still not good enough. This is mainly because I am not skilled in operation.

Now I have been able to finish the lathe, tool alignment and machining within the specified time, and the size can meet the requirements, but I think it is because I spend more time on the lathe. On the other hand, the milling machine is not skilled enough. Although it knows how to deal with it, the size control and time control are not good enough. However, through constant practice and practice, I got a good promotion, and I was able to process parts and solve small problems on machine tools. Especially in the last period, I was able to process parts. And the size is well grasped, which meets the requirements on the drawings.

Fourth, harvest

In the learning process of NC programming and machining, I don't think about what I have learned, but about learning methods. I am honored to be helped by my teacher. They can communicate with me better when I am confused and tangled in my study. When they talked to me about the usefulness of studying this course and the direction of my future work, I felt it was worthwhile. After entering the university, it is no longer an exam-oriented education in high school. Everyone should find a suitable learning method. Only by mastering good learning methods can we learn our own courses well. Moreover, during the period of studying CNC, I have been groping constantly and feel that I have gained a lot.

Verb (abbreviation of verb) has shortcomings and personal expectations.

Although I have mastered the intermediate knowledge of numerical control now, I can process parts. Mastered the relevant theoretical knowledge and operational skills. But when it comes to some special parts, it takes time to think about the processing route. Without programming, you will forget your original knowledge if you get off the plane for a long time. So I will cherish every opportunity to operate in the future. Seize the opportunity and make better use of what you have learned. Compared with the ocean of NC knowledge, I just learned the tip of the iceberg, and I know I still have a lot to learn. I will study hard the knowledge of numerical control on the original basis. Can be engaged in mechanical processing industry, can be owned by schoolmates, can be harvested by schoolmates. I hope to make better use of relevant knowledge to serve this society. At the same time, I hope I can learn more professional knowledge through my own efforts and teachers' teaching.

Numerical control practice summary 3

Name: xx Student ID: xx Professional Class: CNC Technology Level 3

Content summary:

With the rapid development of numerical control industry, numerical control programming tends to be simple, various numerical control systems have been developed, and the compound cycle function of various systems is becoming more and more powerful. With the development of CAD, CAM, UG and other softwares, the programs automatically generated by each software can be recognized by each system, so manual programming is gradually replaced, while the CNC gear shaper adopts advanced CNC system and servo motor to control circumferential and radial feed. It is most suitable for large-scale rough and finish machining in automobile, motorcycle, machine tool and gear factory, especially for internal and external cylindrical gears, duplex gears, multi-tooth gears, sector gears, intermittent gears and modified gears with preset modification amount within 30 degrees. Adding special accessories to the CNC gear shaper can also process helical gears, shaft gears, bevel gears and drum gears. , easy to operate, low technical dependence on labor.

Key words:

Numerical control programming in CNC industry CNC gear shaper CNC system CAD, CAM, UG

Report text:

From the moment we step out of college, the employment problem seems to surround us and become an endless topic for our graduates. In today's society, all kinds of job fairs always say "experience is preferred", but how much experience do we have in school? In order to adapt to this society and increase personal experience and ability in social competition, we conducted an internship.

In Sany, I am an ordinary operator. I operate a gear shaper in Yichang, Hubei. The system is a Siemens system. My job is to learn the CNC gear shaper and insert qualified teeth on each product. As for the operation of CNC gear shaper, it has not changed much from what I learned in school, but it is difficult to process a part independently. For me with a little knowledge, how to process a part depends first on the processing technology, determining the process route, the number of teeth, modulus, measuring rod size, tooth profile size and pressure angle of the workpiece, so as to choose the right tool and then the right machine tool. For external teeth, a machine tool is needed to insert the external teeth. If it is not an external gear shaper, it should be manually adjusted to become an external gear shaper. Compared with internal teeth, the manufacture of external teeth is relatively simple. After the machine tool is selected, choose the right one. Then start to adjust the stroke of the machine tool to see if the workpiece can be inserted without touching the workpiece. If the itinerary is not suitable, it is necessary to adjust the itinerary until it is suitable. After adjusting the stroke, calibrate the workpiece with a dial indicator until the dial indicator jumps within five squares, so that the calibration is finished, the workpiece is tightened, and the tool alignment is started. We should start aiming at C (and the spindle) and the tip of the tool should aim at ourselves. And the distance from the teeth on both sides to the central tooth is equal, so that the C axis is aligned. Next, we use the handwheel to adjust the magnification, and then use very thin paper to intuitively reflect whether we are aligned with the Y axis. After we aim at the Y-axis, we input the tool setting position into the CNC machine tool, and we begin to try to insert. We input our cutter tooth number, pressure angle and workpiece tooth number into the CNC machine tool, and the CNC machine tool will calculate and determine the feed. Not only learned to make workpieces, but also learned some machining skills and machine tool maintenance, such as: 1: How do we choose CNC machine tools and how to choose tools and fixtures? 2. How to input programs and verification programs to reject basic error prompts. 3. If there is any abnormality during processing, please press the "Emergency Stop" button to ensure the safety of the equipment. 4. After the spindle starts cutting, we must pay close attention to the machining process, and it is forbidden to leave without authorization. 5. After turning on the power every time, you must first complete the operation of returning to the reference point of each axis, and then start other operation modes to ensure the correctness of the coordinates of each axis. 6. Before the processing procedure, you must pass a strict efficacy test before you can operate. 7. When manually setting the cutter, attention should be paid to selecting the appropriate feed speed. When changing the tool manually, the tool rest should keep enough distance from the workpiece to prevent the tool from colliding with the workpiece or workbench. 8: It is not allowed to open the door of the electrical cabinet when the CNC machine tool is running normally. 9. Always lubricate the guide rail of the machine tool to prevent the guide rail from rusting, and pay attention to the cleaning and maintenance of the machine tool.

We have learned about the production mode and technological process of modern machinery manufacturing industry. Familiar with the main molding methods and processing methods of engineering materials, the working principle and typical structure of the main equipment used, the use of fixtures and measuring tools and the safe operation technology. Understand the knowledge of mechanical manufacturing process and the application of new technology, new technology and new equipment in mechanical manufacturing. Have preliminary independent operation skills in the main molding and processing methods of engineering materials. In the process of understanding, being familiar with and mastering certain engineering basic knowledge and operation skills, we have cultivated, improved and strengthened our engineering practice ability, innovation consciousness and innovation ability. This internship made us understand that we should be careful and not careless. At the same time, it also cultivated our strong and unyielding nature, and never gave up perseverance until the last second! We have cultivated and exercised our own views on labor, quality and economy, strengthened our awareness of observing labor discipline, safety technical regulations and caring for state property, and improved our overall comprehensive quality. In the whole internship process, we are very strict with our discipline, and make students' internship rules. At the same time, it strengthens the requirements of cleaning the machine tool site and observing the safety operation rules of various types of work, which plays a good role in promoting the cultivation of students' comprehensive engineering quality. I really realized that truth has to be tested by practice, and I don't try it myself. There are many things that are not in books and can only be realized in practice. Talking on paper will only lead people into misunderstanding, and practice is the eternal teacher. It not only brings us experience, but also lets us know what work spirit and serious style are. I want to study hard in my future study career and become an excellent professional in the future.

The most basic communication between people is language. If we don't speak artistically, or if we don't speak properly, it's hard to get others' good opinion of ourselves. In character, if we are habitual and ruthless, and have Jaken, jealousy, stupidity and arrogance in our hearts, it will be difficult to improve our moral cultivation. Therefore, we must learn to constantly improve, change our own words, modify and change our own thoughts, so as to make continuous progress.

On the road of life, why can some people make continuous progress, while others retreat instead of advancing? The problem is that he can't accept it. This is the same as learning to read. Some people make progress easily because they are willing to accept it. Some people tend to go backwards because they can't get in. In the process of deepening self-cultivation, we must first learn to be educated. To be educated is to absorb things into your own mind and then digest them into your own thoughts. We should not only be taught, but also suffer indignities. If a person can only accept compliments from others, it is impossible to give himself strength completely forever. He should also learn to accept criticism, guidance and even harm from others. In a sense, only through suffering can we make progress.

No matter what you do, you should think twice before you act. Thought is wisdom. If you do everything carefully, you will get twice the result with half the effort. Some people dare not express their ideas, and they dare not express their opinions in public. They only talk in private and dare not do anything. If you dare not be responsible, you will not be responsible. If you don't take responsibility, you can't gain the trust of others and your self-cultivation can't be improved. Therefore, as long as it is a good thing, we must learn to dare to say and do. Hard work is hard work. Efforts must continue day by day, and there must be one condition, that is, you like what you are doing now. If it is something you like, you are willing to work hard anyway. If you love or even infatuate with your job, although to outsiders, you are so diligent and unusual, it is natural for you because you like your job. It is good to have the opportunity to do what you love, but most people are not so lucky. Most people make a living by doing some kind of work. In this case, we should strive to love what we are doing. I work hard, like my job, and then I relax. It becomes very simple to achieve "no less than anyone's efforts". "It doesn't matter if you go out early and come back late. Work hard." Others worry about you, but you don't feel bitter at all, but you feel full because you are capable.

Through this internship, I found some weak links in my previous study, which pointed out the direction for my future study and laid a good foundation for my future work. This internship provides us with a good exercise opportunity, so that we can learn some relevant knowledge as soon as possible in order to apply it to our future business. Generally speaking, this internship not only exercised my professional operation skills, but also learned a lot of knowledge that was not mentioned in the textbook after this internship. A lot of things we just learned when we first came to society. So now I want to establish the employment concept of employment first and then choosing a job. We should learn to be independent in society as soon as possible, dare to participate in social competition and bear social pressure, so as to grow rapidly in society. Generally speaking, as a graduating college student, internship will become an important capital in my life, whether in my future work or life.