公开(公告)号：US5517311A

公开(公告)日：1996-05-14

申请号：US248215

申请日：1994-05-24

申请人： Akihiro Takeuchi ,  Tetsuhiko Nomura ,  Kazuhito Shibata ,  Toshihiko Tsukada ,  Osamu Ozeki ,  Shin Yamamoto

发明人： Akihiro Takeuchi ,  Tetsuhiko Nomura ,  Kazuhito Shibata ,  Toshihiko Tsukada ,  Osamu Ozeki ,  Shin Yamamoto

IPC分类号： G01B11/25 ,  G01B11/00

CPC分类号： G01B11/2518 ,  Y10T29/4927

摘要： A 3D volume measuring apparatus using an optical measuring technique performs an accurate measurement by using a common master clock signal to move a slit beam and to perform a measuring operation using the slit beam. An optical sensor has a slit beam source which projects the slit beam onto a surface of an object. A video camera receives an image of the optical cutting line. A master clock pulse generating unit is provided for generating master clock pulses. The slit beam is scanned on the object in synchronization with the master clock pulses. Information of the image of the optical cutting line is obtained in synchronization with the master clock pulses, so that the contour of the vertical section corresponding to the optical cutting line is obtained. A chamber volume correcting method using the 3D volume measuring apparatus is provided in which method an exact cutting depth for a cylinder head can be calculated so that a chamber of the cylinder head has an exact target volume. The cutting depth is determined in accordance with the measured volume of the chamber before a finish machining is performed.

摘要翻译： 使用光学测量技术的3D体积测量装置通过使用公共主时钟信号来移动狭缝光并执行使用狭缝光束的测量操作来执行精确的测量。 光学传感器具有将狭缝光束投射到物体的表面上的狭缝光束源。 摄像机接收光切割线的图像。 提供主时钟脉冲发生单元以产生主时钟脉冲。 与主时钟脉冲同步地在物体上扫描狭缝光束。 获得与主时钟脉冲同步的光学切割线的图像的信息，从而获得与光学切割线对应的垂直部分的轮廓。 提供了一种使用3D体积测量装置的室体积校正方法，其中可以计算出气缸盖的精确切割深度，使得气缸盖的室具有精确的目标体积。 切割深度根据在执行精加工之前的室的测量体积来确定。