Chapter 42 Woodworking Lathes
Qinjia Village has a lot of people and land, and a family often only has a few acres of rice fields. It’s not that there is no flat land in Renhoufang, Lingnan, but that Qinjia Village has a poor organizational ability. Land close to the small river can divert water from the small river, which is a good rice field. However, no one in Qinjia Village organizes water trucks and canals, and no one grows rice a little far from the small river.
The former patriarch of Qinjia Village was arrogant, but he had no special features in the organization. Qinjia Village has always been poor and a little confused.
These women have not much land at home, some have three acres, and some have four acres. Such a small amount of paddy fields can be used for her husband to farm. Getting two taels of silver a month and food from Qin Zhao is naturally the most beautiful thing in the world.
It means that the family income has increased by more than two times.
Several women were so happy that they were smiling, standing there chattering and discussing how to throw the family affairs to their husbands and daughters, and to concentrate on working in Qin Zhao.
The remaining dozen men looked at Qin Zhao with eager eyes.
Qin Zhao looked at it and found that they were all acquaintances in the village, so he pointed at it casually.
"You! You! You! And you! You! Go back and prepare, come to my house tomorrow to work as a handyman."
The six men were overjoyed and laughed so hard that their chins were almost dislocated.
If a family has a family, you can do the work in the field for your wife. If a bachelor, you will naturally have your parents cooking to farm in the field.
Qin Zhao thought about it and asked again: "Can you do life?"
The men stuttered, "No...No."
Qin Zhao was a little disappointed. Now his workshop lacks the most is female workers who work as sewing. After all, the Ming Dynasty was conservative, and there were not many women who were willing to show up in Qin Zhao's family and work as female workers with men. Even women who were over the age of childbearing must follow the morals of women and try not to go out if they could go out.
Qin Zhao looked at Qin Yuanhao and said, "Qin Yuanhao, please help me shout in the village today and hire two more female workers who can tailor them."
Qin Yuanhao heard Qin Zhao's words and looked extremely surprised.
Zhao Ge'er actually trusted herself so much that she asked herself to recruit him.
I just represent a dozen villagers to ask for work. Brother Zhao looked down on me so much and asked me to help him recruit new workers?
Who is Zhao Ge'er? First, he killed a tiger with gunpowder, seized all the supplies from the mountain and distributed them to the villagers, and invented such a popular spring soft chair. Qin Zhao is now a god-like figure in the eyes of the villagers. Everyone thinks that as long as he can get close to Zhao Ge'er's thighs, he will be successful in the future and rise with Zhao Ge'er.
Now, Zhao Ge'er actually asked Qin Yuanhao to recruit female workers.
Brother Zhao is from my Qinjia Village and naturally trusts the neighbors in the village!
As long as things are done well this time, they will definitely be reused in the future.
Qin Yuanhao's face was flushed with excitement, and patted his chest crackling, and said loudly: "Brother Zhao, don't worry, you can rest assured, I will definitely find the most honest and best-working old woman in the village. I will guarantee that I won't bother you a little. If I didn't recruit two satisfied female workers for Brother Zhao, Brother Zhao, you slap me with a big slap!"
Qin Zhao smiled and said, "That's up to you!"
Qin Yuanhao waved his hand and said loudly: "Brother Zhao said so politely? It's all for me!"
...
Qin Zhao is preparing to make the woodworking lathe.
Now Qin Zhao has a large order from Zheng Chenggong, so there is no problem of not being able to sell it, but I am afraid that the production capacity is insufficient. In the production process, the most choke in the number of carpenters is the insufficient number of carpenters.
Each sofa needs a wooden base, which requires a stool foot and a support chair back. These things are carpentry work. Qin Zhao's sofa is high-end furniture, and these carpentry work naturally requires fine work and cannot be made in a rough manner. In this way, the workload of carpenters has increased sharply, and even with the carpenters supported by Zheng Chenggong, the number of people is still insufficient.
Qin Zhao thought it was time to come up with lathe technology.
Of course, this first step is just a human woodworking lathe.
He did it right away. Qin Zhao returned to his house, spread his pen and ink to start drawing design drawings of woodworking lathes. He skipped the development history of lathes and was very knowledgeable about later generations of lathes, of course, directly produced woodworking lathes mature in the 19th century.
The woodworking lathe designed by Qin Zhao is an H-shaped type, with the main shaft of the lathe on the left. The bar in the middle of the H-shaped type is a sliding shaft. The sliding shaft is equipped with a movable and rotating tool holder on the sliding shaft. There is also a bracket that can be dragged at a constant speed on the sliding shaft. On the far right of the H-shaped type are the top and tail frames of the lathe.
When using this lathe part, two people shake the power rod next to the spindle to provide power to the lathe.
The wood workpiece to be processed is mounted in the chuck on the spindle, or is supported between the top tips of the spindle and the tail frame. The power rod is driven by human power to obtain the power to rotate. The turning tool is installed on the cutting tool holder, and the longitudinal or horizontal feeding movement is carried by the sliding box. You can also hold the turning tool and lean against the bracket to feed.
The lathe is very simple, but the bearings need to be produced at key parts to reduce friction.
Qin Zhao spread out the white paper again to design the sliding bearings needed for this lathe.
Qin Zhao made not high-end bearings from later generations, but original spherical bearings that were horizontally fitted with steel in this era. In the original history, the earliest practical rolling bearings with cages were invented by watchmaker John Harrison in 1760 to make H3 chronographs, which was regarded as an epoch-making invention at that time.
Qin Zhao can also make this kind of rolling bearing now.
Qin Zhao had Su Steel, which was considered a steel-based steel in this era. In addition to the heat treatment technology he mastered, it was easy to produce a sliding bearing with very little force without requiring too high bearing efficiency.
Qin Zhao drew a sketch of the bearing.
The installation of sliding bearings is the most difficult thing for laymen to understand. Even Qin Zhao, before he learned about sliding bearings in detail, he did not understand how those rotating beads were installed into the grooves of the two shaft tubes.
In fact, this is very simple. When installing the sliding bearing, first install all the rotating beads into the bottom of the outer ring and gather them together. Then clamp the inner ring into the outer ring. After the inner and outer rings are in place, then evenly fit the rotating beads at the bottom of the outer ring to the correct position, so that the inner ring and the outer ring are stuck together.
After being stuck, you must also use a cage for each ball to rotate only in a fixed position.
Qin Zhao calculated the bearing force.
Calculated based on the maximum amount of a wood workpiece not exceeding 5Kg, the bearing's force when it rotates does not exceed 13Kg. Such force is fully qualified by the heat-treated Sugang.
Qin Zhao asked a state-owned bearing factory for advice when he was fine. In addition to the confidential and advanced technology, the engineers of the state-owned factory knew everything. In the final analysis, the general heat treatment of bearing steel is in those steps, and Qin Zhao is already familiar with it. Under his guidance, a few blacksmiths on the Yunfeng could complete the heat treatment.
What is more troublesome is the bearing polishing technology, and Qin Zhao has never actually used steel polishing.
Qin Zhao found Liu Datou from Guangzhou City for this polishing technology. He also needed to polish steel sheets for the production of heart protection mirrors for the chain mail. Because if the heart protection mirror is smooth, it can largely slide the bows and arrows shot from the side. Under this requirement, the smoother the heart protection mirror, the better. Liu Datou's steel polishing technology is quite good.
Chapter completed!