| 摘要 |
PURPOSE: A hole measuring apparatus is provided to shorten measurement time and save analysis time through the use of laser device and reflector mirror, while achieving improved accuracy of measurement. CONSTITUTION: A hole measuring apparatus, comprises a laser device(30) for scanning laser beams to holes formed at a product; a reflector mirror mounted by a fixing member installed in the holes, and which receives laser beams and reflects the received laser beams; a controller(60) connected to the laser device, and which senses the laser beam reflected by the reflector mirror, and calculates wavelength and distance; and an encoder for calculating three-dimensional coordinate value by calculating the distance in horizontal and vertical angles. The laser device has a sensor head for sensing the laser beam reflected from the reflector mirror and transmitting the sensed laser beam to the controller.
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