US 4,692,074 AGranted

Tool coupling arrangement for a tooling assembly

AssigneeThe Cross Company

InventorsMichael D. Smith, Daniel F. Dobat

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Abstract

A tool coupling arrangement is disclosed for a tooling assembly (10) adapted for automatic tool insertion into a spindle assembly (12), the tooling assembly (10) having an axially moveable element (20) for causing movement independently of the spindle assembly (12). In the particular disclosed applications, a pair of cutting tools (14, 16) are provided to simultaneously machine concentric features on a workpiece (8), disclosed as a valve stem guide bore (9) and valve seat (7) of an engine cylinder head. A first coupling arrangement secures this tooling assembly (10) after it is inserted within the spindle assembly (12), while a second coupling arrangement automatically couples the separately moveable element (20) to an inner draw bar (84) of the spindle assembly (12). The second coupling arrangement couples the inner draw bar (84) to the independently moveable element (20) by limited rotation thereof after limited axial advance to enable continued axial advancing of element (20) by movement of the inner draw bar (84), independently of the spindle assembly (12).

Claims15

Dependent claims

A tool coupling arrangement of the type adapted to detachably couple a tooling assembly (10) insertable into a spindle assembly (12),

said tooling assembly (10) having a plurality of elements, at least one of said elements (20) axially moveable independently of the other elements of said tooling assembly (10);
drive means (54, 56, 156, 164, 158) for rotating each of said elements about aligned axes of rotation;
an inner draw bar (84);
an outer draw bar (82);
each of said inner and outer draw bars (84, 82) mounted in said spindle assembly (12) for independent axial movement therein;
actuator means (210, 258) for axially moving said inner and outer draw bars (84, 82) independently in said spindle assembly (12);
first coupling means (30, 86, 92) operable by axial movement of said outer draw bar (82) to couple said tooling assembly (10) to said spindle assembly (12), characterized by:
second coupling means (116, 108, 240, 224) operable upon limited axial advance of said inner draw bar (84) to couple said independently moveable element (2) of said tooling assembly (10) to said inner draw bar (84) for axial movement together therewith.

5 more elements

Dependencies are inferred from the claim text.