Reusable guide plate and drilling tool with exchangeable guide plate

Indexable guide plate for use in a drilling tool, wherein the indexable guide plate has two sides and a central fastening hole, wherein a support surface and multiple guide surfaces are formed on each side,

• wherein the indexable guide plate is rotationally symmetrical with respect to a longitudinal axis of the fastening hole,
• wherein an outer contour of the indexable guide plate has the shape of a hexagon, and in that the hexagon has three longer edges and three shorter edges alternately,
• wherein the guide surfaces on one side of the indexable guide plate are separated from one another only by radially extending depressions, and
• wherein a base of these depressions is designed as a flat support surface, characterized in that the depressions are T-shaped at their radially outer ends.

Drilling tool having at least one exchangeable guide plate, comprising a shaft, a clamping end, a drill head having at least one cutting edge and a longitudinal axis, wherein at least one recess for receiving an indexable guide plate,

• wherein the indexable guide plate has a support surface, multiple guide surfaces and a central fastening hole, wherein the indexable guide plate is rotationally symmetrical with respect to a longitudinal axis of the fastening hole,
• wherein the support surface is flat, characterized in that an outer contour of the indexable guide plate has the shape of a hexagon,
• wherein the hexagon has three longer edges and three shorter edges alternately, and
• wherein the indexable guide plate is provided in the drill head and/or in the shaft, and wherein an at least approximately central threaded bore having an internal thread is present in the recess or recesses, characterized in that the shape of the at least one recess corresponds to the hexagonal outer contour of the indexable guide plate, and in that undercuts are milled out at the corners.

Drilling tool having at least one exchangeable guide plate, comprising a shaft, a clamping end, a drill head having at least one cutting edge and a longitudinal axis, wherein at least one recess for receiving an indexable guide plate,

• wherein the indexable guide plate has a support surface, multiple guide surfaces and a central fastening hole, wherein the indexable guide plate is rotationally symmetrical with respect to a longitudinal axis of the fastening hole,
• wherein the support surface is flat, characterized in that an outer contour of the indexable guide plate has the shape of a hexagon,
• wherein the hexagon has three longer edges and three shorter edges alternately, and
• wherein the indexable guide is provided in the drill head and/or in the shaft, and an at least approximately central threaded bore having an internal thread is present in the recess or recesses, characterized in that a base of the at least one recess is flat, and in that an intermediate piece is arranged in the recess, an outer contour of the intermediate piece corresponds to the outer contour of an indexable guide plate, in that an underside of the intermediate piece is flat, and in that ribs extending in the radial direction are formed on the upper side of the intermediate piece, in that these ribs are complementary to depressions of the indexable guide plate which extend in the radial direction, in that an upper side of the ribs is flat, and in that the upper sides lie in one plane.