The three of them looked at Yi Chuanzong with their mouths wide open.

Is this the devil? They are already twenty and they still have to do winter vacation homework?

Question 1: Draw a simplified diagram of the lathe, which can be scribbled, label the names of each part, and write down their specific functions. Write down the operating essentials and describe the sequence of operations.

Write the 1 processing steps of the workpiece, with pictures below.

Question 2: Grinding machine...

Write the 2 processing steps of the workpiece, with pictures below

Question 3: Precautions for chiseling operations...

…

Question 15: Additional question, write 15 processing steps of the workpiece, as shown in the figure.

Gong Zhoujie was about to cry, "Master, stop writing, please give us a day during the New Year!"

Yi Chuanzong raised his head and glanced at him, "Do you, a big man, need anything during the Chinese New Year?"

"Don't you want to find a beautiful wife? Liu Yuan will get married next year. If you have a wife, just ask her to buy it. Do you know how to choose vegetables? Do you know how much firewood, rice, oil and salt are used for a meal? Yes.

Do I need you to buy it?"

"Shihang's family is in such a difficult situation. An extra fifty yuan a year can increase his standard of living. Two more kilograms of stick noodles and three more kilograms of steamed buns a day. A family of eight can eat more. During the New Year, an extra fifty yuan can increase his standard of living.

With the money, the family can buy some new clothes and have food for two days."

The three of them were left speechless and could only secretly swallow their saliva and watch Yi Chuanzong continue writing.

The number of days to do the questions has indeed not increased, but the number of questions to do every day has doubled!

It used to be two hours a day, but now it's four hours a day.

And that was a question that Yi Chuanzong thought was simple.
Chapter completed!