Tool shape measuring apparatus
    2.
    发明授权

    公开(公告)号:US10189137B2

    公开(公告)日:2019-01-29

    申请号:US15569544

    申请日:2015-06-30

    摘要: There is provided a tool shape measuring apparatus that allows detection of shape abnormality in a tool having a plurality of cutting edges with a simple configuration. A light receiving section 6 includes a light receiving face 9 perpendicular to an optical axis 6b of a light receiving lens 6a. In the light receiving face 9, there are disposed a plurality of line sensors 8 arranged in different directions from each other, each line sensor having a plurality of sensor elements arranged in one direction. The line sensor 8 is disposed across a first area not reached by the irradiation light L as being completely blocked by the tool 4, a second area disposed adjacent the first area and reached by the irradiation light L with a portion thereof being blocked, and a third area disposed adjacent the second area and reached by the irradiation light L not blocked at all. A calculation section 21 checks change occurring in output states of the line sensor 8 associated with rotation of the tool 4 and specifies a contour position of the tool 4 based on a center position in the second area when the number of the sensor elements included in the second area becomes minimal.