Gear cutting – milling – or planing – Milling – With cutter holder
Reexamination Certificate
2002-07-08
2003-09-16
Wellington, A. L. (Department: 2859)
Gear cutting, milling, or planing
Milling
With cutter holder
C409S232000, C409S233000, C082S160000, C403S322100
Reexamination Certificate
active
06619897
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an error proofing method and apparatus for cutting tools. More particularly, this invention relates to an error proofing method and apparatus for cutting tools insuring that cutting tools, when changed, are placed in their proper radial orientation within a clamping unit.
2. Description of the Related Art
There are known mechanisms for releasably holding a toolholder shank in a support member bore when the mechanism actuating member is transversely aligned with respect to the longitudinal axis of the toolholder shank and a support member bore. Such mechanisms and articles are used in the cutting and shaping of workpieces where it is not expedient to use the tool support member in connection with a base member having a bore containing an axially aligned power driven means for axially actuating the locking mechanism in the tool support member. Examples of toolholders and support members utilizing releasable locking mechanisms having radial activation are shown in U.S. Pat. Nos. 4,573,824; 4,575,293 and 4,135,418 and 4,736,659. There is, however, always a need for improved mechanisms in this field for aligning the toolholder and the clamping unit. The present invention ensures a concentric aligned fit between the toolholder and the clamping unit
SUMMARY OF THE INVENTION
Briefly, according to this invention, there is provided an error proofing method and apparatus for aligning a clamping unit and a toolholder to facilitate proper positioning of a cutting tool with respect to a workpiece.
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Erickson Robert A.
Mullins Kenneth R.
Kennametal Inc.
Meenan Larry R.
Ross Dana
Wellington A. L.
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