Boring tool holder with probes for measuring bore
AssigneeToyoda Koki Kabushiki Kaisha
InventorTetsuro Yamakage
Life of this patent
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Abstract
A tool holder having a shank receivable in a machine tool spindle, a tool mounting shell securedly connected to the shank and adjustably movably carrying a cutting tool in a radial direction thereof, and a pair of contact detection members respectively protruded from the outer surface of the mounting shell in opposite directions. The tool holder, when used while received in the machine tool spindle, operates not only to make a bore in a workpiece, but also to be a measuring probe in measuring the diameter of the bore so that a machine tool using the tool holder is able to successively perform boring and measuring operations of the bore. Further, the tool holder incorporates a tool position adjusting mechanism therein.
Claims9
A tool holder for use in a machine tool system including contact detection circuit means for detecting contact between said tool holder received in a tool spindle and a bore of a workpiece mounted on a work table when relative movement between said tool spindle and said work table is effected in a direction perpendicular to the axis of said tool spindle so as to measure the diameter of said bore after the machining of said bore, said tool holder comprising:
- a shank receivable in said tool spindle;
- a tool mounting shell fixed to said shank and including means for carrying a cutting tool thereon;
- a pair of contact detection members respectively protruding from the outer surface of said tool mounting shell in opposite directional senses;
- a first plane encompassing the axis of said tool mounting shell and a cutting edge of said cutting tool;
- a second plane encompassing the axis of said tool mounting shell at right angles to said first plane;
- and
- contact points formed at opposite ends of said contact detection members, each of said contact points being defined on a line extending perpendicular to said first plane and parallel to said second plane, said line being spaced from said second plane by a first predetermined distance in the directional sense toward said cutting tool, said contact points being spaced from one another by a second predetermined distance which is greater than the width of said tool mounting shell in the direction of said second plane.
Dependencies are inferred from the claim text.