| 摘要 |
PURPOSE:To attain original positioning work easily for a short time by supplying electric power to an NC control motor, detecting an original signal outputted from the motor and fixing a motor shaft at the turning position of the original point. CONSTITUTION:The NC control motor 10 is connected to an original point checking device 14 at first. Consequently, 5V power supply is applied from the device 14 to the motor 10, and if the rotary shaft of the motor 10 is rotated manually under said state, pulse-like A-phase, B-phase and original point signals are formed in the motor and impressed to display lamps 22, 24, 26 through level conversion circuits 16, 18, 20 respectively. When the shaft 10a is rotated slowly by a hand, the original point signal appears on the original position and the lamp 26 lights up, so that a shaft 12a is fitted to the NC device. The frequency of the generation of A-phase or B-phase signals in each rotation of the motor is displayed on a display device 36 and the abnormality of a pulse generating part or the like of the motor 10 can be detected. |
