Describes both geometrical and practical tests on precision lathes with swing over bed up to 500 mm and distance between centres up to 1 500 mm, and the corresponding permissible deviations, with reference to IS : 2063-1962 ' Code for testing machine tools '.
1.1 It deals only with the verification of accuracy and applies neither to the testing of the running of the machine ( vibrations, abnormal noises, stick-slip motion of components, etc ) nor to the machine characteristics (speeds, feeds, etc ) which shall generally be checked before testing the accuracy.
IS 6040-1972 history
1972IS 6040-1972 Test charts for precision lathes - lathes with a maximum bed oscillation of 500 mm and a maximum center distance of 1500 mm