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What Is The Standard For Making Spring?

What is the standard for making spring?

Most materials have varying degrees of elasticity, and if they bend, they will recover their original form with great strength. In human history, it must have been noted early that the branches of saplings and young trees have great flexibility, because many primitive cultures use this feature to wedge a stick behind a specially crafted door or cage, or to pull down on a pole with a slip knot, the stick or rod will bounce back once the tension is loosened. They use this method to catch animals and birds. In fact, the bow is the spring that uses the elasticity of the young tree in this way; In the Middle Ages, the idea began to appear mechanically, such as looms, lathes, drills, mills and saws. The author uses the hand or pedal plate to give the downward pressure stroke, pulls the work machinery downward, then with the rope fixed in the machine the rod bounces back, produces the reciprocating movement.

The elasticity of the material is no less than its torsion resistance. The Greek Empire (presumably 4th century BC) invented the twisting spring, which was rubbed with tendons or Mao Yan, to replace the simple spring to strengthen the power of the stone and the stone-throwing machine. People began to realize that metals were more resilient than wood, cutin or any of these organic substances. Philo (whose writing age was about 200 BC) introduced it as a new discovery. He estimates that the reader is unbelievable. The elasticity of the Celts and Spaniard's swords drew the attention of his Alexander City predecessors. In order to find out why the swords were resilient, they carried out many experiments. As a result, his master Kotsiby invented the stone-throwing machine, the spring of the stone-throwing machine was made of a curved bronze plate--actually the earliest leaf spring; Philo himself further improved the riprap machine. Creative Kurt, after inventing the stone-throwing machine, came up with another kind of stone-throwing machine-a It uses the elastic work of the air in the cylinder under pressure.

It was a long time before people thought: if you compress a screw, instead of bending a straight bar, the metal spring will store more energy. According to Bronereski's biography, he made an alarm clock, which used several generations of springs. It was pointed out that there was a drawing of this alarm clock in a mechanical manual in the 15 century leaf with some peculiar spiral spring timepieces. This type of spring is also used in modern mousetrap. Clocks with coil springs (horizontal compression instead of vertically compressed springs) have been in use for about 1460 years, but are essentially luxury goods for royalty, and about a century later, with spring clocks becoming the hallmark of middle-class people.

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