| 摘要 |
PURPOSE:To guarantee prescribed machining accuracy by constituting a control device so that it operates correcting the deviated position of a focal position on a work of a laser beam corresponding to an output. CONSTITUTION:A gradient theta of an optical axis of a laser beam corresponding to a laser excitation input A of a laser oscillator 1 is measured in advance. From the relation with an excitation input A when the theta was measured an amount (h) of deviation of a focal position of the laser beam can be obtained as a function of an excitation input A. Therefore, the excitation input A is inputted into an NC controller 8, an operation is conducted in the device 8 to obtain an amount of deviation (h) of the focal position and the move of the NC controller 8 is corrected by the amount equivalent to this (h). By this method, the NC controller 8 operates correcting a command value for the program position by the amount of deviation (h) of the focal position. Accordingly, even if a gradient theta occurs to the optical axis of the laser beam, a machined result can be obtained according to the command value for the program position. |
