- 本站编辑:xghl发布日期：2018-02-22 13:48 浏览次数：
1, the ancient drilling - "bow windlass" drilling technology has a long history. Archaeologists have now discovered that in 4000 B.C., human beings had invented devices for perforating. The ancients in the two columns on a beam from the beam hanging down a rotary awl, and then use the string winding drive rotary awl, so you can punch in the wood on the stones. Soon, people have also developed called "punch tool pulley", it also utilizes elastic string, the rotary awl.
2, before and after the 1850, German Marty G Noni first made for metal punching drill; 1862 held in London International Fair, the British Whitworth exhibited a drill powered iron cabinet, which became the embryonic form of modern drilling machine.
After that, a variety of drilling machines have appeared, such as the rocker drilling machine, the drilling machine with automatic feeding mechanism, and multi - shaft drilling machine at the same time. Due to the improvement of tool materials and bits, and the use of the motor, a large, high performance drilling machine was finally made.