Mechanical chronology from A.D. 1900 to present.

At the beginning of the 20th century, Curtis of America invented the speed class steam turbine.

Experimental stress analysis of wheels, gears and bearings. It was first completed by Cork in England and Mesner in France.

During the period of 1900, the iron industry in Santiaoshi area, Tianjin, China, appeared to manufacture ironware for foreign concession building facilities.

190 1 year, France invented gas welding.

1903, American Wright brothers built the world's first real plane and successfully tested it.

Ford of the United States established Ford Motor Company and began mass production of automobiles. 1908, Model T developed by Ford was put into the market.

The first diesel ship "Vandal" was launched.

1904, Planter of Germany established the boundary layer theory.

Leibel of America invented the offset press.

1906, lemerre and arman Gao manufactured the first gas turbine capable of outputting power (but the efficiency is only 3-4%, which is not practical).

1906 ~ 19 14 years, Bisch, Switzerland trial-produced the compound engine.

1906, Nernst in Germany discovered the "thermal theorem", and Planck and Simon in Germany revised it into the third law of thermodynamics in 19 12.

1907, Taylor of America studied the influence of cutting speed on tool life and put forward the famous Taylor formula.

1908, China Guangzhou Junhean Machinery Factory manufactured the first domestic internal combustion engine (single cylinder horizontal 8 horsepower diesel engine).

19 1 1 year, Taylor of the United States published the book Principles of Scientific Management, and put forward the concept of "scientific management" for the first time.

Carmen, an American Hungarian, explained Carmen Vortex Street from an aerodynamic point of view.

Green companies in America have created modular machine tools.

Synthetic rubber in Duisburg, Germany.

19 12 years, Brearley of Britain and Strauss of Germany made chrome stainless steel and chrome nickel stainless steel respectively.

Zhan Tianyou of China initiated the establishment of the China Engineering Society and later became the China Institution of Engineers.

19 13, Sweden manufactured the first electric diesel locomotive.

Ford Motor Company of the United States built the earliest automobile assembly line.

19 15, Bao Zhong watch factory, the first watch factory in China, was established in Yantai.

The first machine tool (4-foot bicycle bed) in China was made by Shanghai Rongchangtai Machine Factory.

19 19, Xiechang and Runchang sewing machines, the earliest sewing machine factories in China, were established in Shanghai.

1920, the first practical gas turbine (working according to constant volume heating cycle) was specially developed in Holzwart.

Kaplan of Austria invented the axial flow turbine.

Capec of Czechoslovakia first used the word "robot" in his sci-fi drama Russell Universal Robot.

Griffith of the United Kingdom made a fracture mechanics analysis.

1923, Germany Schroeder invented cemented carbide.

From 1923 to 1927, the bias interferometer was designed and manufactured by Koster in Germany.

1926, the first automatic production line (processing automobile chassis) was built in the United States.

1927, Wood and loomis of the United States conducted ultrasonic machining experiments. 195 1 year, Cohen in America made the first ultrasonic processing machine.

1934, Knohl and ruska in Germany made a transmission electron microscope.

1934, Hangzhou Central Aircraft Factory, a Sino-US joint venture, was established. Made an all-metal bomber.

From 1935 to 1936, Liu Xianzhou, China initiated the establishment of China Mechanical Engineering Society.

1938, the electrostatic copying technology pioneered by Carlson, USA.

German company Degussa invented ceramic tools.

From 1938 to 1940, ernst and Merchant in the United States photographed the chip formation process with high-speed cameras and explained the chip formation mechanism.

1939, Switzerland manufactured a gas turbine for power generation (working according to a constant pressure heating cycle).

194 1 year, Switzerland made the first gas turbine locomotive.

1942, Fermi and others in the United States built the first controllable chain nuclear fission atomic reactor.

1943, the Lazarenko couple in the Soviet Union invented the electric spark.

In the 1940s, the Soviet Union invented anode mechanical cutting.

1947, the first gas turbine ship "Gatelick" came out.

Morrow and Williams in England made ductile iron.

In the 1940s, Taylor-Sen of Britain designed a polyhedron.

1950, Steigerwaldt of the Federal Republic of Germany invented electron beam processing.

1952, Parsons made the first CNC machine tool.

Electronic watch produced by Lip company in the United States.

1954, the United States built the first nuclear-powered ship, the nuclear submarine nautilus.

1955, the United States successfully studied the plasma arc machining (cutting) method.

1956, China No.1 Automobile Factory (Changchun) was completed and put into operation.

China established Machine Tool Research Institute.

China established the Institute of Tool Science, and 1957 was reorganized into the Institute of Tool Science.

1957, Wankel of the Federal Republic of Germany developed a rotary piston engine.

1958, Carney-Tektronix developed the first machining center.

America has developed into an industrial robot.

Shuloye of America invented full mold casting.

World Federation of Engineering Organizations was founded.

Thomas and Sholow in the United States published papers on laser formation. 1960, Mayman in the United States developed a ruby laser.

Luoyang Bearing Factory, the largest bearing factory in China, was completed and put into operation.

Shanghai Watch Factory, the largest watch factory in China, was completed and put into operation.

1959, China No.1 tractor factory (Luoyang) was completed and put into operation.

Mather Company of the United States obtained the patent of harmonic drive.

In 1950s, the United States invented electrolytic grinding.

The Soviet Union and the United States applied electrochemical machining methods in production.

Liquid jet processing method began to be applied to production.

The United States uses finite element method for stress analysis.

1960, the 1 1 international metrology congress defined "meter" for the second time: the Kr atom is at 2P 10 and 5d5.

When the energy level jumps, the wavelength of its radiation light in vacuum is 1650763.73 times ".

The first heavy machinery factory (Qiqihar), the largest heavy machinery factory in China, was completed and put into operation.

1962, Bendiks company of America first realized the optimal adaptive control (ACO) on the CNC milling machine.

1964, Grover of America invented the heat pipe.

1967, Fox of the United States first put forward the concept of system optimization.

British Moleyns Company developed "System 24" according to the basic concept of flexible manufacturing system proposed by Williamson.

1969, China No.2 Automobile Factory (Hubei) started large-scale construction. 1975 to build a production base of 2.5 tons off-road vehicles.

1972, American general electric company produced polycrystalline synthetic diamond and polycrystalline cubic nitride Peng blades.

1976, Fanuc, Japan exhibited a flexible manufacturing unit consisting of four machining centers and 1 industrial robots for the first time.

Xu Nanpu of the United States pointed out in 1979 that the friction coefficient is equal to the sum of mechanical meshing friction coefficient, adhesive friction coefficient and ploughing friction coefficient.

1983, 17 The International Metrology Conference defined "meter" as "the length of the distance that light travels in a vacuum within a time interval of 1/299792458 seconds" for the third time.