概况 随着现代科学技术的发展,对机床铸件尺寸精度保持性提出越来越高的要求。作为机床安装基础的床身以及有精度配合要求的其他主要铸件(工作台、立柱及溜板等),它们的变形将会直接影响机床的加工精度。同时,它们在加工、运输及装配等过程中产生变形,将给生产带来许多困难。为 Overview With the development of modern science and technology, the dimensional accuracy of the machine tool castings put forward higher and higher requirements. As a bed base for machine tool installation and other main castings with precision matching requirements (table, column and slide plate, etc.), their deformation will directly affect the machining accuracy of the machine tool. At the same time, they are deformed during processing, transportation and assembly, which will bring many difficulties to production. for