How to calculate the kilogram force of the cylinder
Publish: 2021-05-03 14:19:44
1.
Calculation formula of theoretical output force of cylinder: F = P * d-f ′
F: theoretical output force of cylinder (KGF)
F ′: output force at 85% efficiency (KGF) - (f ′ = f) × 85%)
D: cylinder diameter (mm)
P: working pressure (kgf / cm2)
2.
The calculation formula of cylinder pressure is: F = P * a-f. F: Cylinder output (KGF) a: sectional area (cm2) P: applied pressure (kgf / cm2) f: frictional resistance (KGF). Calculate the pressure and multiply it by the force area. The pressure is the pressure of the air source, and the stressed area is the area of the piston
the calculation formula of supercharging cylinder output = supercharging ratio * air source pressure * cylinder piston area = cylinder piston area / supercharging rod area * air source pressure * cylinder piston area. The calculation formula can get the supercharging ratio from cylinder piston area / supercharging rod area
in the actual calculation, the cylinder piston area and supercharging rod area of the gas-liquid supercharging cylinder will not be shown in the parameter table, and the details have to be known by consulting the manufacturer
In general, the cylinder force is required according to the theoretical balance condition of external load, and different load rates are selected according to different speeds, so that the cylinder output force has a little margin The cylinder diameter is too small, the output force is not enough, but the cylinder diameter is too large, which makes the equipment bulky, increases the cost, increases the gas consumption and wastes energy. In fixture design, force expanding mechanism should be used as far as possible to rece the overall size of the cylinder When the horizontal cylinder pushes the load, the exhaust throttle is recommended; When the cylinder installed vertically lifts the load, it is recommended to use the intake throttle to adjust the speed3. You also need to know the pressure from the cylinder
for example, 0.6MPa (= 600kpa = 6.1182973 kgf / cm & # 178;))
the theoretical output can be obtained by calculating the cylinder block (inner) area * pressure value;, This is more intuitive)
for reference
for example, 0.6MPa (= 600kpa = 6.1182973 kgf / cm & # 178;))
the theoretical output can be obtained by calculating the cylinder block (inner) area * pressure value;, This is more intuitive)
for reference
4.
it can be calculated according to the calculation formula
5. The ratio of pressure to area is pressure
6.
Prince subway station to Admiralty, do not leave the station, to the inside to find Chaiwan direction of the subway, to Causeway Bay
a detailed map is attached below. I hope it can help you
7. 1、 Create situations and stimulate interest
"a good beginning is half the battle.". How to design a novel and interesting scene to raise students' interest in learning? This is what every teacher is thinking and practicing. This is even more important for freshmen. It is an important psychological characteristic of the first grade students that they are easy to talk, active and distracted. Therefore, a good beginning can often attract children's attention, let them consciously participate in your classroom, achieve twice the result with half the effort. In normal teaching, in order to achieve this goal, I always try to find and excavate the subjects related to the teaching content, such as the existing courseware, teaching reference and teaching reflection of the teachers who have taught, so as to design scenarios that can stimulate students' interest as much as possible, so as to achieve effective teaching
Second, from the perspective of students' learning style to talk about effectiveness
I remember when I was teaching grade one, many children had mastered the addition and subtraction method within 10 or even the addition and subtraction method within 20, and some of them could do the addition and subtraction method within 100. When I met some parents at the beginning of school, they would be very proud to tell me that their children should have no problem in learning mathematics, because their children calculate problems very quickly. But after a period of time, I found that it was not the case. Those children who thought they were quick always made mistakes when they finished the homework assigned by the teacher, and their exam results were not ideal. In fact, the reason is very simple, because they misunderstood mathematics. Mathematics is not able to do a few addition and subtraction can, through mathematics learning is to cultivate children's logical thinking ability, and finally can use mathematics to solve practical problems in life. Therefore, as teachers, we should pay more attention to the teaching of learning methods in the classroom, which is very important for the first-year students. We give them accurate learning methods from the beginning, teach them how to listen to the class, how to participate in the classroom, and effectively improve the classroom efficiency through "questioning, cooperation, hands-on, practice" and other learning methods< Third, the realization of effective classroom should also pay attention to the following three aspects
1. The relationship between teachers and students:
all these years of teaching experience tell me that it is more important to be a teacher that students like and let students like your class. Because children like you, they will be very positive in your class. No matter what you ask them to do, they will complete it well. The tacit understanding between teachers and students will greatly improve the classroom efficiency
2. The relationship between teachers and teaching materials:
every teacher should have an overall understanding of teaching materials, and grasp the system, structure, content, key points and difficulties of teaching materials. Then according to the actual situation of the students in the class, plan the presentation of knowledge in the textbook. Prepare lessons carefully and teach them well. But it's really easy to say and difficult to do. We always feel regret after a class. In the final analysis, we didn't grasp the compiling intention of the textbook. Especially in the new textbook, we are all groping for it, and sometimes we make mistakes of wearing new shoes and following the old way. I remember when I first talked about the double-digit calculation, After reading the reference, I feel that there is no difference between this content and the old teaching materials. It's just that the two conditions and a question in the previous table format are changed into a situation. After reading the situation, the students will say the conditions themselves, and then ask questions according to the conditions. So I followed the original way of teaching. As a result, I found that the classroom atmosphere was very ll, and the students could not talk about the conditions according to my requirements. The effect was ineffective. After class, I reflected on it. What's the matter? In the second class, I changed my way and stopped asking conditions and questions. Every question asked the students to look at the text and think about the scene with their eyes closed. Then I asked questions according to the scene I imagined. Suddenly, I found that the classroom atmosphere was active and more students raised their hands. The effect was much better than that in the first class. Therefore, as teachers, we should really grasp the teaching materials, clarify the knowledge points, key points, training points and expansion points of the teaching materials, and finally work out a more reasonable teaching method that is closer to students and more concive to students' acceptance
3. The relationship between students and teaching materials
to make teaching materials closer to students and serve the development of students is the new concept of the new curriculum standard, and teaching should be "people-oriented". In order to achieve the effectiveness of the classroom, we should grasp the relationship between teaching materials and students. We should not forget that the object of our teaching is students. They all have ideas. As teachers, we should not always be superior. Sometimes we need to put down our airs, pretend we don't understand, carefully design problems, stimulate students' learning initiative, and let students really become the masters of the classroom< 4. Talking about effectiveness from practice
practice is an important part of primary school mathematics, which is indispensable for both new and review classes. It is also an important means for students to master mathematical knowledge and form skills. Therefore, the design of our classroom exercises should be as follows: 1. 2. It is typical. 3, it can embody the essence of teaching content. 4. The number of questions is appropriate. 5. According to the different situations of students, the homework is arranged hierarchically, so that students at all levels have different homework requirements as far as possible, so as to improve the effectiveness of homework arrangement< In a word, classroom teaching must be a purposeful and effective activity. Effectiveness is the life of teaching. A semester of classroom practice has gains and shortcomings, in the future teaching, I will continue to think and forge ahead. We teachers only have a down-to-earth foothold in weekdays teaching, remove the flashy airs, remove the pursuit of short-term benefits of utilitarian thinking, reflect after learning, reflect after practice, improve in reflection, learn again in improvement, I believe we will all make progress.
"a good beginning is half the battle.". How to design a novel and interesting scene to raise students' interest in learning? This is what every teacher is thinking and practicing. This is even more important for freshmen. It is an important psychological characteristic of the first grade students that they are easy to talk, active and distracted. Therefore, a good beginning can often attract children's attention, let them consciously participate in your classroom, achieve twice the result with half the effort. In normal teaching, in order to achieve this goal, I always try to find and excavate the subjects related to the teaching content, such as the existing courseware, teaching reference and teaching reflection of the teachers who have taught, so as to design scenarios that can stimulate students' interest as much as possible, so as to achieve effective teaching
Second, from the perspective of students' learning style to talk about effectiveness
I remember when I was teaching grade one, many children had mastered the addition and subtraction method within 10 or even the addition and subtraction method within 20, and some of them could do the addition and subtraction method within 100. When I met some parents at the beginning of school, they would be very proud to tell me that their children should have no problem in learning mathematics, because their children calculate problems very quickly. But after a period of time, I found that it was not the case. Those children who thought they were quick always made mistakes when they finished the homework assigned by the teacher, and their exam results were not ideal. In fact, the reason is very simple, because they misunderstood mathematics. Mathematics is not able to do a few addition and subtraction can, through mathematics learning is to cultivate children's logical thinking ability, and finally can use mathematics to solve practical problems in life. Therefore, as teachers, we should pay more attention to the teaching of learning methods in the classroom, which is very important for the first-year students. We give them accurate learning methods from the beginning, teach them how to listen to the class, how to participate in the classroom, and effectively improve the classroom efficiency through "questioning, cooperation, hands-on, practice" and other learning methods< Third, the realization of effective classroom should also pay attention to the following three aspects
1. The relationship between teachers and students:
all these years of teaching experience tell me that it is more important to be a teacher that students like and let students like your class. Because children like you, they will be very positive in your class. No matter what you ask them to do, they will complete it well. The tacit understanding between teachers and students will greatly improve the classroom efficiency
2. The relationship between teachers and teaching materials:
every teacher should have an overall understanding of teaching materials, and grasp the system, structure, content, key points and difficulties of teaching materials. Then according to the actual situation of the students in the class, plan the presentation of knowledge in the textbook. Prepare lessons carefully and teach them well. But it's really easy to say and difficult to do. We always feel regret after a class. In the final analysis, we didn't grasp the compiling intention of the textbook. Especially in the new textbook, we are all groping for it, and sometimes we make mistakes of wearing new shoes and following the old way. I remember when I first talked about the double-digit calculation, After reading the reference, I feel that there is no difference between this content and the old teaching materials. It's just that the two conditions and a question in the previous table format are changed into a situation. After reading the situation, the students will say the conditions themselves, and then ask questions according to the conditions. So I followed the original way of teaching. As a result, I found that the classroom atmosphere was very ll, and the students could not talk about the conditions according to my requirements. The effect was ineffective. After class, I reflected on it. What's the matter? In the second class, I changed my way and stopped asking conditions and questions. Every question asked the students to look at the text and think about the scene with their eyes closed. Then I asked questions according to the scene I imagined. Suddenly, I found that the classroom atmosphere was active and more students raised their hands. The effect was much better than that in the first class. Therefore, as teachers, we should really grasp the teaching materials, clarify the knowledge points, key points, training points and expansion points of the teaching materials, and finally work out a more reasonable teaching method that is closer to students and more concive to students' acceptance
3. The relationship between students and teaching materials
to make teaching materials closer to students and serve the development of students is the new concept of the new curriculum standard, and teaching should be "people-oriented". In order to achieve the effectiveness of the classroom, we should grasp the relationship between teaching materials and students. We should not forget that the object of our teaching is students. They all have ideas. As teachers, we should not always be superior. Sometimes we need to put down our airs, pretend we don't understand, carefully design problems, stimulate students' learning initiative, and let students really become the masters of the classroom< 4. Talking about effectiveness from practice
practice is an important part of primary school mathematics, which is indispensable for both new and review classes. It is also an important means for students to master mathematical knowledge and form skills. Therefore, the design of our classroom exercises should be as follows: 1. 2. It is typical. 3, it can embody the essence of teaching content. 4. The number of questions is appropriate. 5. According to the different situations of students, the homework is arranged hierarchically, so that students at all levels have different homework requirements as far as possible, so as to improve the effectiveness of homework arrangement< In a word, classroom teaching must be a purposeful and effective activity. Effectiveness is the life of teaching. A semester of classroom practice has gains and shortcomings, in the future teaching, I will continue to think and forge ahead. We teachers only have a down-to-earth foothold in weekdays teaching, remove the flashy airs, remove the pursuit of short-term benefits of utilitarian thinking, reflect after learning, reflect after practice, improve in reflection, learn again in improvement, I believe we will all make progress.
8. Sectional area= π r²= π D/2²= π D²/ 4
the formula is very clear. You remember the area formula wrong
the area is π Multiply by the square of the radius, and the formula uses the diameter, so divide by 4
the formula is very clear. You remember the area formula wrong
the area is π Multiply by the square of the radius, and the formula uses the diameter, so divide by 4
9. Located at the east corner centre, 555 Hennessy Road, Tongluowan, Hongkong, the ground floor of the east corner centre is the Tongluowan station: the database of GF, the SOGO supermarket, the 1 SOGO leather Department, the SOGO, the famous brand 1F, the SOGO fashion shop, the handbags, the perfume and the jewelry 2F, and the 3F clothing for the 3F. The young people then take 4F sports and leisure procts. 9F bedroom supplies such as kitchenware, 10F home appliances 11F bookstore of Chongguang Huidian, 12F western restaurant, 13F ~ 16F Chongguang hairdressing and skin care center of Chongguang club
10. From Times Square eastbound to Percival street, northbound to Hennessy Road, eastbound, the whole journey is about 5 minutes
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