《Manufacturing Engineering》82年第1期综述了美国1932～1981年间工业的进展,对我们颇有启发。该刊把美国工业发展分为六个时期,现择其与机械制造有关者简介如下:一、1932～1939年是美国经济萧条时期,但工业技术还是向前发展的,Norton公司制造第一台曲轴磨床;1935年制造第一台带锯和第一台螺纹磨床;1938年美国航空工业发展了一种可载72人飞越大西洋的客机;1939年汽车零件开始进行冲压制造;同年飞机产量达15,000架,发动机的年产量超过16,000台。二、1940～1945为第二次世界大战时期,美 “Manufacturing Engineering,” the first issue of the 82nd review of the progress of the United States from 1932 to 1981, is quite inspiring to us. The journal divides the development of U.S. industry into six periods. The following is a brief introduction of those related to machine manufacturing. First, 1932 to 1939 was the period of economic recession in the United States, but industrial technology was still moving forward. Norton made the first Crankshaft grinding machine; first band saw and first thread grinder in 1935; US Aerospace Industry developed a passenger aircraft capable of carrying 72 people over the Atlantic Ocean in 1938; auto parts began stamping manufacturing in 1939; aircraft production reached 15,000 in the same year The annual output of the engine exceeds 16,000 units. Second, from 1940 to 1945, during World War II, the United States