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1. 发明申请

WO1990013791A1 THREE-DIMENSIONAL MEASURING INSTRUMENT 审中-公开
标题翻译：三维测量仪器
公开(公告)号：WO1990013791A1
公开(公告)日：1990-11-15
申请号：PCT/JP1990000551
申请日：1990-04-27
申请人： MITUTOYO CORPORATION , TAKAHASHI, Keizo , MATSUMOTO, Masakasu
发明人： MITUTOYO CORPORATION
IPC分类号： G01B21/20
CPC分类号： G01B3/002 , G01B21/047
摘要： This invention relates to a three-dimensional measuring instrument capable of setting an origin of measurement arbitrarily by reference point blocks. When dust is deposited on the reference point block, the origin of measurement deviates by a distance corresponding to the thickness of the dust, so that the object measuring accuracy decreases. In order to prevent this inconvenience, covers (40A, 40B, 80) enclosing the reference point blocks (50A, 50B, 70) are provided so that the covers can be opened and closed with respect to the reference point blocks. If these covers are opened only when an origin of measurement is set, the deposition of dust on the reference point blocks can be prevented or reduced extremely, and an origin of measurement can be set accurately, this enabling an object to be measured precisely. This invention can be applied to a three-dimensional measuring instrument adapted to set an origin of measurement by origin ball-carrying reference point blocks and carry out precision measurement of the order of microns.
摘要翻译：本发明涉及能够通过参考点块任意设定测量原点的三维测量仪器。当灰尘沉积在参考点块上时，测量原点偏离与灰尘厚度相对应的距离，从而物体测量精度降低。为了防止这种不便，设置包围参考点块（50A，50B，70）的盖（40A，40B，80），使得盖可以相对于参考点块打开和关闭。如果这些盖仅在设定测量原点时才打开，则可以极大地防止或减少灰尘沉积在基准点块上，并且可以准确地设置测量的原点，从而能够精确地测量物体。本发明可以应用于三维测量仪器，其适用于通过原始球携带参考点块设置测量原点，并执行微米数量级的精密测量。

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