Measurement and compensation method of gantry CNC machine tool based on single laser synchronisation method Online publication date: Mon, 19-Oct-2020
by Minqiang Jia; Ran Gao; Lei Sun; Qianqian Guan
International Journal of Nanomanufacturing (IJNM), Vol. 16, No. 4, 2020
Abstract: The gantry CNC machine tool has unique structure and characteristic. It does not always form a symmetrical structure and symmetrical force during the machining process. The inconsistency will cause a non-synchronised error in the biaxial synchronous system. The no-synchronised error will affect the machining accuracy, cause the beam to be pulled and the gantry frame or drive element to be damaged. Therefore, the biaxial synchronisation error of the CNC machine tool is one of its most important specifications, and it should be solved firstly when compensating. This paper presents a new method called single laser synchronisation method, and puts forward the measurement method and compensation method of positioning error. This new method includes a special optical path layout, a characteristic way of measurement and compensation. This method has some advantages such as high precision, low-cost, efficiency, etc.
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