公开(公告)号：US20050274034A1

公开(公告)日：2005-12-15

申请号：US10520942

申请日：2004-06-09

申请人： Suuji Hayashida ,  Yuji Fujikawa ,  Yuichi Ichikawa ,  Osamu Saito ,  Nobuyuki Hayashi ,  Takahiro Nakamura ,  Yuuzou Hashimoto ,  Tomio Omori

发明人： Suuji Hayashida ,  Yuji Fujikawa ,  Yuichi Ichikawa ,  Osamu Saito ,  Nobuyuki Hayashi ,  Takahiro Nakamura ,  Yuuzou Hashimoto ,  Tomio Omori

IPC分类号： G01B3/18

CPC分类号： G01B3/18

摘要： A measuring instrument that includes a tube 21 having a female thread 211 and a spindle 3 having a lead screw 31 screwing with the female thread 211 and capable of being advanced and retracted in an axial direction along with rotation around the axial center, and measures dimensions etc. of a workpiece according to displacement in an axial direction of the spindle 3 based on a rotation amount of the spindle 3. According to this measuring instrument, a pitch P of the lead screw 31 is twice as large or more than the difference between an external diameter R and a core diameter r thereof, and the difference between the external diameter R and the core diameter r is one-fifth or less of the external diameter R. Because of the lead screw 31 with the large pitch, the spindle 3 can be moved at high speed, thus enhancing operational performance of the measuring instrument.

摘要翻译： 一种测量仪器，其包括具有阴螺纹211的管21和具有与内螺纹211螺合的导螺杆31的心轴3，并且能够沿轴向方向前进和后退，同时围绕轴心旋转，并且测量尺寸 根据该主轴3的旋转量，根据该主轴3的轴方向的位移而使工件相等。根据该测量仪器，导螺杆31的间距P是两倍以上 外径R和芯直径r，外径R和芯直径r之差为外径R的五分之一以下。由于螺距大的螺杆31，主轴3 可以高速移动，从而提高测量仪器的运行性能。