The historical development of small bearings

Potter's wheel is a disc with vertical shaft, and the good clay or blank in the middle of the potter's wheel, the potter's wheel rotation, at the same time with the hand to knead clay or clay forming with tools and billet surface bright and clean. Potter's wheel on its rotating speed is divided into fast and slow chakras, and of course, fast is developed on the basis of the slow wheel. According to the new archaeological record, slow wheel had been born 8000 years ago gave birth to, or have evolved to a stage. Across the lake bridge in March 2010 cultural relics found wooden potter's wheel base, confirmed the potter's wheel and technology of China 2000 years ahead of the west and the two rivers, that is to say China earlier than Asia began to use bearing, or by using the principle of bearing. Like a trapezoid frustum of a cone, the wooden potter's wheel base on the table with a raised small cylindrical center position, it is the potter's wheel axis turntable. If the system is a wheel on the bottom of the wooden potter's wheel on the table, then a complete potter's wheel was recovered. After the potter's wheel has been produced, as long as wet clay in turn plate, and to carefully, with a rotating wheel, the other with wood, bone artifacts or contact the stone to repair the tire body, after a lot of rotation, you can leave the ring on the tire body string lines. As mentioned above, this involves the turntable, and there is a shaft to support, this is the prototype of the bearing. The structure of the potter's wheel signal as shown in the figure below: below is a fast reconstruction, which is based on fast recovery of the tang dynasty, is faster than the first round should be advanced, but the principle is unchanged, just material of wood into the iron. Xuanyuan era, the legend of car of the book of songs recorded bearing lubrication about 1100 BC - the book of songs Before the 600 record of bearing lubrication about 1100 BC - the book of songs Before the 600 record of bearing lubrication of the sliding bearing, put forward the need of lubrication or promote the development of tribology. Now know, lubrication is generally used for old car, but because of the emergence of lubrication is much less than the car that was easy to see. So be exact lubrication of time, is a very difficult thing, after read and search a data, on the lubrication is first recorded in the book of songs. The book of songs is one of the earliest Chinese poems. So the poetry between outsole produced in the middle of the week to the spring and autumn, the 11th century B. C. to the 6th century BC. In the 'book of songs Bei spring wind' article, a 'fat load, and also car MPH. Trent into who, not harmful defect? 'And as in ancient times interpreted as' axle end keys '. For the car, it is equivalent to we now call pin, through the shaft end, the wheels can be 'and' live, made the car wheel to fixed; And 'fat' is, of course, lubricant, 'and' home, 'Michael' is fast. This a few words of poetry into modern Chinese, is: with grease, the axle lubricant, in the end, the pin check, drove away, take me home. Quickly rushed to the home guard! Don't let me your conscience. The qin dynasty, han dynasty with a prototype structure bearing because of the zhou, qin, han dynasty on bearing technology invention and application of practice, to some of the important cultural texts in the qin and the han dynasties, has been recorded and often use contain the clear, mature writing about bearing special words, one of more common 'axis' 'water-analogy-simulation' 'jian' and other words as well as the 'axis' and so on main verbs ( See said wen jie zi ') 。 （ Bearing an ID: zcbk2014) Contemporary Japan's bearing words is still the 'axis', the qing dynasty written seal script, shaft, bearing, water-analogy-simulation, mace. Han dynasty word original meaning explanation, 'axis' also a round, 'bearing' in also, also, 'water-analogy-simulation' car hub railway also, 'mace' axle iron, also visible has established in the qin and the han bearing culture idea and text form. Yuan dynasty abridged armilla abridged armilla using cylindrical roller bearing technology using cylindrical roller bearing technology is abridged armilla by simplified armillary sphere. Armillary sphere is mainly used in astronomical observation 伩, its components can be divided into support parts and motor parts. Possible support parts including water ring, dragon post, days after the double loop, the equator, and the center of the possible water sky column, etc. Of the image of the picture below shows the armillary sphere main support decoration parts. The late qing dynasty's westernization remote for the development of China's machinery industry plays a role, also has effect on the bearing manufacturing. In December of 2002, China bearing technology delegation to visit Europe, Sweden SKF bearing exhibition hall found a set of bearings in the qing dynasty in China. This is a set of roller bearing, careful manufacturing, ring, cage, roller and modern bearing very phase. According to the product description, the bearing is 'sometime in the 19th century, the rolling bearing made in China'.