Brief introduction to machine tool history:
1774, an Englishman John Wilkinson invented a more accurate cylinder boring machine. The next year, he used this barrel boring machine to bore out the cylinder, which met the requirements of Watt steam engine. In order to bore larger cylinders, he built a cylinder boring machine driven by water wheel in 1775, which promoted the development of steam engines. Thereafter, the machine tool is driven by a steam engine through a crankshaft.
1797, the lathe made by the Englishman Maudslay was driven by the lead screw, which could realize the motorized feed and thread turning, which was a major change in the structure of the machine tool. Maudslay is therefore called "the father of British machine tool industry".
/kloc-in the 0/9th century, due to the promotion of textile, electric power, transportation machinery and arms production, various types of machine tools appeared one after another. 18 17 years, the British Roberts created the planer; 18 18 American Whitney (his full name is eli whitney) made a horizontal milling machine; 1876, the United States made a universal cylindrical grinder; 1835 and 1897 invented gear hobbing machine and gear shaper successively.
/kloc-the best mechanic in the 0/9th century should be whitworth (full name: joseph whitworth), who made the length measuring instrument in 1834. The length measuring instrument can measure the length error of about one tenth of an inch. The principle of this length measuring instrument is the same as that of a micrometer. The workpiece is clamped by rotating the thread that can enter and exit the indexing plate, and the scale on the indexing plate is read by the sliding ruler. 1835, whitworth invented the gear hobbing machine at the age of 32. In addition, whitworth also designed plug gauges and ring gauges to measure the inner and outer circles of cylinders. It is recommended that all machine tool manufacturers use standard threads of the same size. Later, the British Industrial Standards Association accepted this proposal, and since then, this thread has been used as a standard thread in various countries.