| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a measuring method capable of accurately measuring the radius of a tip of a knife edge by a simple way using a widespread measuring instrument. <P>SOLUTION: A method for measuring the radius of a tip of a knife edge comprises: using a contour shape measuring instrument to measure the tip of the knife edge 20 by a first stylus 33 having a ball 31 at its tip; calculating the radius of a least square circle as a first measurement value R<SB POS="POST">ka</SB>; measuring the tip of the knife edge by a second stylus 34 having a ball 32 at its tip; calculating the radius of a least square circle as a second measurement value R<SB POS="POST">kb</SB>; measuring the tip of one of the first stylus 33 and the second stylus 34 by the other tip of the first stylus and the second stylus; calculating the radius of a least square circle as a third measurement value R<SB POS="POST">ab</SB>; and calculating (R<SB POS="POST">ka</SB>+R<SB POS="POST">kb</SB>-R<SB POS="POST">ab</SB>)/2 to determine this value as the radius of the tip of the knife edge. <P>COPYRIGHT: (C)2013,JPO&INPIT |
