第一机械工业部于一九七五年三月二十一日以(75)一机院字380号文件颁发了组合机床精度及通用部件等十五项部标准,这是我国组合机床专业的第一批部标准,规定从一九七五年七月一日起试行,试行期为两年。此项标准将由技术标准出版社出版,同时责成我所负责组织标准的宣传推广工作,并负责组织组合机床通用部件的设计、验证和测试等工作。 Ministry of Machinery Industry issued the standard of 15 sets of machine tools and general components by the title of (75) No.1 Machinery Yuan Zi 380 on March 21, 1975. This is a key part of our country’s combined machine tools The first batch of standards, the provisions from July 1, 1975 trial, the trial period of two years. This standard will be published by the Technical Standards Press, meanwhile, I will be responsible for organizing the promotion of the standard and responsible for organizing the design, verification and testing of the common components of the machine tool.