Report on the training of college students' lathe workers.
First, the purpose of the internship (a) a simple understanding of the working principle and working mode of the lathe.
(two) learn the correct use of lathes, and can correctly use a workpiece processing method.
Second, the lathe worker preparation knowledge
(A) Turner safety knowledge
1, wear work clothes to work, girls wear work hats, and put their long arms in the hats.
2, must concentrate at work, are not allowed to leave the machine without authorization.
3, the workpiece and turning tool should be clamped firmly, so as to avoid the workpiece and turning tool flying out and hurting people.
4, the workpiece rotation, are not allowed to measure the workpiece.
5. After the workpiece is installed, the three-jaw wrench must be removed conveniently, so as to avoid accidentally starting the lathe, so as to avoid the wrench flying out and hurting people.
6, are not allowed to go to work, stick to your post.
(B) Turner's theoretical knowledge
1. Lathe worker: a worker who operates a lathe and processes mechanical products on it.
2. What is a turn? It is a cold working turning method that changes the size and shape of the workpiece blank by using the rotating motion of the workpiece and the feeding motion force of the tool.
3, lathe model standard notes and instructions cw6 140
Features of lathe: the model code of universal flexible lathe group indicates the machining diameter110.
4. Lathe components: spindle box, change gear box, walking box, carriage box, tool rest, tailstock, carriage three bars, lathe bed and accessories.
5, lathe maintenance and maintenance
① Lubricating oil ② Check whether the machine tool is in good condition ③ Anti-smashing ④ Cleaning ⑤ Turn off the power supply.
(3) Workpiece
Name handling content tool:
1, outer circle car? 30? 0,590-degree cylindrical turning tool vernier caliper.
2, car steps (line positioning) car? 22 and? 1790 degree cylindrical turning tool vernier caliper.
3. Turning circular turning tools r 105 and r 135.
4, plastic file plastic file, emery cloth.
(4) General provisions of lathes
Do a good job:
1, workpiece alignment, only use manual chuck or turn on the lowest speed alignment, do not turn on the high speed alignment.
2, processing bar, bar shall not be too long, generally not more than 300 mm at the back of the spindle hole advisable, and wood chips to clip it in the spindle hole. When it exceeds 300 mm, it should be supported by a bracket, and it can only be handled after it is confirmed to be safe, but it is not allowed to drive at high speed.
3. When processing deviated workpieces, they should be properly matched and fastened firmly. Turn the chuck by hand to check the accessibility, and then turn it at a low speed to confirm that the counterweight meets the requirements before processing.
4. When clamping the workpiece with the tailstock thimble, the extension of the tailstock sleeve shall not exceed twice the diameter of the sleeve, and pay attention to locking.
5. When drilling with tailstock, it is forbidden to use lever to turn the handwheel to feed.
6. When loading and unloading heavy workpieces, block them with boards on the bed surface to prevent accidents.
7. When loading and unloading the chuck, only the V-belt is allowed to rotate the spindle by hand. It is absolutely forbidden to start the machine tool directly to force it to loosen or tighten, and at the same time block it on the bed surface with wooden boards to prevent accidents.
8. When the frame moves quickly, it must stop moving quickly 50~ 100 mm before the limit position to prevent collision.
9, turning tool installation shoulds not be too long, turning tool gasket to level off, the width should be consistent with the width at the bottom of the turning tool.
10, when turning the excircle, only the polished rod is allowed to move the slider instead of the lead screw.
1 1. When changing the rotation direction of the spindle, stop the spindle first, and don't suddenly change the rotation direction of the spindle.
12, it is not allowed to brake the spindle rotation by reversing in the work.
13, when processing steel parts to processing iron castings or other non-ferrous metal parts, the chips should be thoroughly removed and the coolant should be wiped.
Third, the internship content
(1) Basic knowledge
1. The principle, processing range and characteristics of turning.
2. The basic structure, types and uses of ordinary lathes.
3. Types, structures and functions of turning tools, simple sharpening methods and installation of turning tools.
4. Method of turning excircle, end face, groove, thread and conical surface.
5, the installation method of workpiece, the role of lathe main accessories.
6. The concept and selection of turning parameters.
(2) Basic skills
1, operate the lathe correctly and independently, and install and use common tools.
2, cylindrical end face, groove, thread and conical surface, etc.
3. Finish your homework independently.
Fourth, the internship results
Verb (abbreviation of verb) sums up experience
Turning is the third type of work that I practice, and it is also the type of work that I practice for the longest time and have a sense of mastery.
The teachers seem relaxed, because apart from briefly introducing the use of lathes, they basically sit and chat and occasionally come out to help see our practice progress. Then, if one of us accidentally grinds the turning tool, we need the teacher's help to come out and sharpen the tool. In addition, we are basically groping, groping and tossing ourselves. Can't say that this kind of tossing has no effect. After all, we made so many cute little things. This is not a small success for us, because without satisfactory technology, this gadget will not look good even if it is made.
So the most important work on the lathe is mental work. We study the ordinary lathe, and all the operations are controlled manually. If you want to make superb technology, it is difficult to meet the requirements without skilled technology and careful arrangement. It requires that when you get another part drawing of a part to be processed, you should not only know how to arrange to deal with that part first, but also know that all parts of your hand, brain and body should be fully coordinated when dealing with it. It can be said that it is a whole body. Moreover, the precautions of lathe workers are quite complicated, and you need patience, perseverance and perseverance.
Report on the training of college students' lathe workers (part two)
The lathe work practice is another opportunity for us to actually master knowledge. Without the rigorous environment in the classroom, I feel the atmosphere in the workshop. At the same time, I feel more about the significance of being a worker, which makes me more aware of my responsibilities. Learn a new technology every few days, and complete the process from knowing nothing about all kinds of work to making a finished product within the specified internship time. With the patient and meticulous teaching of teachers and my active cooperation, I didn't have a safety injury accident; Basically achieved the expected internship requirements and successfully completed the two-month internship. Practice is the criterion for testing truth. Through two months' internship as a lathe worker, I learned a lot of common sense and got a mental exercise. In the process of internship, I have both bitterness and joy. This is another precious wealth I got in my middle school life, which will have a great impact on my future study and work.
During my internship, I studied the theory and practice of lathe work. I made my own handicrafts, and I can make a workpiece according to the requirements of the drawings for the internship of milling workers, turning workers and planers; The hardest lathe worker and locksmith, in one day, students should first master the essentials of opening the bed, and then turn out the hammer handle according to the drawings. Although I was sore all over after an afternoon, I was overjoyed to see my finished products in the practice center for the first time in my life, and I felt very fulfilled. What I learned in this lathe work practice is:
(1) Through this internship, I learned about the production mode and technological process of modern machinery manufacturing. Familiar with the main molding methods and processing methods of engineering materials, as well as the working principle and typical structure of the main equipment used; Use and safe operation technology of tools, fixtures and measuring tools. Understand the application and important role of mechanical manufacturing process knowledge, new technology and new equipment in mechanical manufacturing.
(two) in the main molding and processing methods of engineering materials, with a certain degree of independent operation skills.
(3) In the process of understanding, being familiar with and mastering certain engineering basic knowledge and operation skills, I have cultivated, improved and strengthened my engineering practice ability, innovative consciousness and innovative ability.
(4) I have cultivated and exercised my own views on labor, quality and economy, strengthened my awareness of observing labor discipline, safety technical operation rules and caring for property, and improved my overall comprehensive quality.
The lathe work practice plays an important role in the overall cultivation of my engineering quality and engineering ability, which not only enables me to master the requirements of various types of work, but also establishes a relatively complete system concept, requiring me to learn the basic process knowledge of various types of work, understand the equipment principle and working process, strengthen the training of practical ability, and have the ability to analyze and solve simple process problems by using the learned process knowledge. In practice, the school combines the practical contents of making hammers, connecting blanking, turning, welding and fitter. , so that I have an overall understanding of all processing links of mechanical products. I understand the order and function of each job.
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