发明名称 |
DRILL JIG ASSEMBLY HAVING HYDRAULIC CHUCK AND DRILL GUIDE WITH PILOT BORE |
摘要 |
<p>A drill jig assembly for accurately supporting a drill relative to a workpiece is provided that includes a drill having a cylindrical shank, a chuck having a cylindrical exterior, and a hydraulically-operated collet for detachably gripping the drill shank, a housing tube for slidably and rotatably supporting the cylindrical exterior of the chuck, and a drill guide mounted on the distal end of the housing tube. The drill guide is formed from a carbide bushing having a pilot bore for rotatably receiving the cylindrical shank of the drill and maintaining a pilot concentric alignment between the bushing and the shank during a drilling operation. The use of hydraulic chuck in combination with the pilot bore of the carbide bushing allows the drill to accurately bore holes in a workpiece to very tight tolerances in a one-step, extend and retract drilling operation.</p> |
申请公布号 |
EP1104343(B1) |
申请公布日期 |
2002.08.28 |
申请号 |
EP19990930214 |
申请日期 |
1999.06.10 |
申请人 |
KENNAMETAL INC. |
发明人 |
LIPOHAR, STEVE, P.;MAGILL, WILLIAM, C.;TUNIS, WILLIAM, B. |
分类号 |
B23B31/02;B23B31/20;B23B31/30;B23B47/18;B23B49/00;B23B49/02;(IPC1-7):B23B49/02 |
主分类号 |
B23B31/02 |
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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