- Mar 24, 2018 -
As a result of the need to manufacture weapons, hydrodynamically driven barrel boring machines have emerged in the 15th century. After J. Watt obtained a patent for a utility steam engine in 1769, the machining accuracy of the cylinder became a key issue for the steam engine. In 1774 the British J. Wilkinson (also translated John Wilkinson) invented the barrel boring machine, and the following year was used to process the cylinder block for the watt steam engine. In 1776 he made a more accurate cylinder boring machine. Around 1880, the production of horizontal boring machines with front and rear columns and tables began in Germany. In order to adapt to the processing of extra large and heavy workpieces, a floor boring machine was developed in the 1930s. With the increase of milling workload, floor boring and milling machines emerged in the 50's. At the beginning of the 20th century, due to the development of the watchmaking equipment manufacturing industry, it was necessary to machine equipment with a small pitch error and a coordinate boring machine appeared in Switzerland. In order to improve the positioning accuracy of the trampoline, optical reading heads or digital display devices have been widely used. Some trampolines also use digital control systems to automate coordinate positioning and machining processes.