1980年第一期“机床”曾发表了我写的“介绍一种机床床身矫形新方法──延展法”,至今已八个年头。在此期间有些同志来信,有的直接来人对此问题进行探讨或询问。另外由于延展法的奇功异效,我认为有进一步向大家介绍的必要。 应用延展法对机床床身等大型工件的矫形是从1962年开 In the first issue of Machine Tool in 1980, I wrote “Introduction of a New Method of Machine Tool Orthopedic - Extension Method”, which I wrote for eight years now. During this period, some comrades wrote letters and some directly came to discuss or inquire about this issue. In addition due to the miraculous effect of the extension method, I think there is a need to further introduce to you. Application of extension method on the machine bed and other large parts of the orthopedic is from 1962 to open