For machine tools that are composed of a transmission chain to process gears and threads, in order to obtain accurate tooth profile, pitch and tooth division accuracy, to ensure that the transmission chain has a certain accuracy. There are two ways to check the transmission fault of the machine tool transmission chain: indirect method and direct method:
(1) The indirect method is to process a product, such as a gear or lead screw, according to the machine tool manual, measure the workpiece, and use the method of inspecting the quality of the workpiece to determine whether the transmission fault of the machine tool transmission chain can process the workpiece with the required accuracy level . This method reflects the general negligence of the construction process, including the transmission negligence of the machine tool transmission chain, as well as the negligence of other elements.
(2) Direct method There are two kinds of static measurement method and dynamic measurement method.