发明名称 |
Apparatus and method for the noncontact measurement of drill diameter, runout, and tip position. |
摘要 |
<p>A laser based, noncontacting measurement instrument particularly adapted for the printed circuit board drilling industry is disclosed. The instrument accurately measures drill diameter, runout, and tip position under actual operating conditions. A laser beam is focused in space and the amount of light occluded by the drill bit as the bit is passed through the beam is sensed by a detector. Diameter, runout, and tip position are calculated by measuring the amount of occlusion, monitoring the angular orientation of the rotating drill; and correlating the amount of light occlusion to the angular orientation of the drill. The instrument automatically compensates for dust and debris in the optical path.</p> |
申请公布号 |
EP0439907(A2) |
申请公布日期 |
1991.08.07 |
申请号 |
EP19900312088 |
申请日期 |
1990.11.05 |
申请人 |
EXCELLON AUTOMATION |
发明人 |
SKUNES, TIMOTHY A.;CASE, STEVEN K.;JALKIO, JEFFREY A. |
分类号 |
G01D5/34;G01B11/00;G01B11/08;G01B21/02;H05K3/00 |
主分类号 |
G01D5/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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