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US 2003/0143050 A1Published application
Reaming tool with a guide shank
AssigneeDihart AG
InventorsOtto Buettiker, John Christoffel, Roman Eigenmann
Life of this patent
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AssigneeDihart AG
InventorsOtto Buettiker, John Christoffel, Roman Eigenmann
Estimating the term…
The invention relates to a reaming tool for reaming out several axially interspaced borings (14) of a workpiece (12). The reaming tool comprises a guide shank (16) which can be clamped into a machine spindle and which can be supported in prepared borings (14) of the workpiece (12) to be machined using external supporting elements (18). The reaming tool also comprises a reaming head (26) which coaxially connects on the front end thereof. In order to be able to easily change a worn tool, the invention provides that the reaming head (26) can be connected to the guide shank (16) by means of an auto-centering clamping mechanism (30), and that the supporting elements (18) positioned in the proximity of the clamping mechanism (30) can, during a clamping process, be radially spread in an at least partial manner from a dimension smaller than that of the diameter to a predetermined diameter guide dimension.
A reaming tool for reaming a plurality of coaxial bores of a workpiece which are arranged at an axial distance from one another, having a guide shank (16), which can be clamped in place in a machine spindle and can be supported by means of external supporting elements (18) in prepared bores (14) of the workpiece (12) to be machined and/or in a guide bush (20), and having a reaming head (26) coaxially adjoining the front end of the guide shank (16) and provided with cutting edges (28) and if need be additional supporting elements, characterized in that the reaming head (26) can be connected to the guide shank (16) by means of a self-centering clamping mechanism (30), and in that the supporting elements (18) positioned in the vicinity of the clamping mechanism (30) can be radially expanded during the clamping operation at least partly from a diameter undersize to a predetermined diameter guide dimension.
Dependencies are inferred from the claim text.