CNC Machining Aluminum Parts Round Shaft Collar For Robot

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The Application of the Initial Bearing Lubrication Technology in Zhou and Han Dynasties

The most important and prominent invention of engineering machinery in ancient China was the car. The invention and application of the car's mechanical engineering significance lies in the sliding friction of heavy objects to the ground when the car moves heavy objects, to the rolling friction of the wheels to the ground, and the friction of the axles to the wheels or the axles to the bearings, so as to achieve the physical consumption of the original power saving. In order to save energy losses more effectively, in the Week Dynasty (11th century BC, 770 BC), animal and plant oil was invented and applied as a lubricant in the process of friction between the axles and wheels, see the poetry of the national wind spring water. Red and copper were further invented in the Han Dynasty (206 A.D.). That is, the iron ring mounted in the hub as a bar, and the iron bar mounted on the end of the axle as copper. When the axle and crucifixion are inserted into the nail, as the wheels continue to roll, a smoother sliding friction is formed between the crucifixion and the 釭, which can further reduce friction losses, but also enable the axle and wheels to move in each other, due to the intervention and isolation of iron materials, avoiding direct friction and improve the service life.

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