Tool position compensating mechanism
AssigneeToyoda Koki Kabushiki Kaisha
InventorsTetsuro Yamakage, Toshiharu Takashima
Life of this patent
Estimating the term…
Abstract
A tool holder incorporating a tool position compensating mechanism which comprises a screw shaft rotatably supported in a tool mounting shell in axial alignment therewith and engageable with a stationary member on a machine tool for relative rotation with the mounting shell is disclosed. A sleeve is threadedly engaged with the screw shaft to be axially moved at the time of relative rotation between the mounting shell and the screw shaft. This sleeve, when axially moved, actuates a transmitting member, supported in the shell, by the wedge action of a cam surface formed thereon, so that a cutting blade support end of a tool secured on the mounting shell is bent to adjust the position of a cutting blade on the tool.
Claims7
A tool holder for use on a machine tool comprising:
- a shank receivable in a tool spindle of said machine tool;
- a tool mounting shell integrally provided on said shank and fixedly carrying a cutting tool including a cutting blade support end, said cutting blade support end being bendable toward a radially outward direction of said tool mounting shell;
- a screw shaft rotatably supported in said tool mounting shell in axial alignment with the axis of said shank and provided with first positive drive means at an outer axial end thereof;
- a sleeve received in said tool mounting shell and being rotatable therewith, said sleeve being threadedly engaged with said screw shaft for being axially moved when relative rotation between said tool mounting shell and said screw shaft is brought about, said sleeve being formed with a cam surface which is sloped along and relative to the axis of said tool shank;
- and
- transmitting means interposed between said cutting tool and said cam surface of said sleeve for bending said cutting tool support end of said cutting tool toward said radial outward direction when moved by the wedge action of said cam surface at the time of axial movement of said sleeve;
- said machine tool including:
- a work table for mounting a workpiece thereon, said tool spindle and said work table being relatively movable with each other in first to third directions, said first to third directions being perpendicular to one another;
- second positive drive means nonrotatably provided on said work table and engageable with said first positive drive means of said screw shaft;
- feed means for effecting relative movement between said tool spindle and said work table in said first to third directions so as to bring said first positive drive means into engagement with said second positive drive means;
- and
- a spindle drive motor connected to said tool spindle for rotating said spindle, with said first and second positive drive means being engaged with each other, so as to effect said relative rotation between said tool mounting shell and said screw shaft.
Dependencies are inferred from the claim text.