Hilti Aktiengesellschaft

Matthaeus Hoop

Christoph Weber

Steven Moseley

Thomas Britt

Christoph Amman

Joerg Ebert

József Szabó

Christopher Weber

Jens Stracke

Thorsten Klein

A drill bit has a cutting portion having an annular portion, where the annular portion has a first end on which is disposed a cutting element and a second end that includes an outer insertion element and a stop shoulder. The drill bit has a drill shaft portion having a cylindrical drill shaft, where the drill shaft has an inner insertion element with an end face on a side of the drill shaft facing the cutting portion. The outer insertion element and the inner insertion element together form a plug connection in an insertion direction that is parallel to the axis of rotation and the insertion elements are connectable to each other via a pin element that is movable into a slot-shaped recess. The pin element is attached to an outside of the inner insertion element and the outer insertion element has the slot-shaped recess.

Drill bit with an exchangeable cutting portion

A drill bit, which is rotatable in a direction of rotation about an axis of rotation, is disclosed. The drill bit has a cutting portion with an annular portion where the annular portion has a first end on which is a cutting element and has at a second end a first insertion element. The drill bit has a drill shaft portion with a cylindrical drill shaft which has at an end, towards the cutting portion, a second insertion element. In a direction of insertion parallel to the axis of rotation, the insertion elements form a plug-in connection and can be additionally connected by way of at least one pin element which is movable in at least one slit-shaped clearance.

A drill bit is disclosed. The drill bit has a cutting portion having an annular portion, where the annular portion has a first end on which is disposed a cutting element and a second end that includes an outer insertion element and a stop shoulder. The drill bit has a drill shaft portion having a cylindrical drill shaft, where the drill shaft has an inner insertion element with an end face on a side of the drill shaft facing the cutting portion. The outer insertion element and the inner insertion element together form a plug connection in an insertion direction that is parallel to the axis of rotation and the insertion elements are connectable to each other via a pin element that is movable into a slot-shaped recess. The pin element is attached to an outside of the inner insertion element and the outer insertion element has the slot-shaped recess.

Change module

A cutting portion, which is rotatable in a direction of rotation about an axis of rotation, is disclosed. The cutting portion has an annular portion, one or more cutting elements which are disposed on a first end of the annular portion, and an insertion element which is disposed on the annular portion at an end that is remote from the cutting elements. The insertion element has at least one slit-shaped clearance with a cross-slit and a connecting slit, where the cross-slit is arranged perpendicularly in relation to the axis of rotation and is connected by way of the connecting slit to an upper edge of the insertion element.

Cutting portion for a drill bit

A drill bit rotatable about a rotation axis is disclosed. The drill bit has a first drill bit portion configured as a cutting portion and has an annular portion connected at one end to one or more cutting elements and, at another end, a first connection device. The drill bit has a second drill bit portion configured as a drilling shank portion and has a cylindrical drill shaft, which on one end has a second connection device. The first and second connection devices in a connected state form a detachable connection, and a force transmission and torque transmission occur from the drill shaft portion to the cutting portion. The cutting portion has a third connection device, and the drill shaft portion has a fourth connection device. The third and fourth connection devices in a connected state form in an axial direction parallel to the axis a form-fitting connection.

Drill bit with a replaceable cutting portion

A drill bit which is rotatable about a drilling axis is disclosed. The drill bit has a cutting section having one or more cutting segments and a first plug-connecting element and a drill shaft section having a second plug-connecting element. The first plug-connecting element and the second plug-connecting element form a plug connection and the first plug-connecting element and the second plug-connecting element are connectable by a pin connection.

A drill bit which is rotatable about a drilling axis is disclosed. The drill bit has a drill shaft section having a first plug-connecting element and a cutting section having a second plug-connecting element. The first plug-connecting element and the second plug-connecting element form a plug connection. The cutting section includes a plurality of cutting subsections each having a ring subsection and at least one cutting segment, wherein each ring subsection together with the first plug-connecting element forms the plug connection and is connectable to the first plug-connecting element by a pin connection.

A tool holder or a disc-shaped working tool () has a working tool holding member () and a working tool holding counter-member () rotatable, together with the working tool holding member, () about an operational axis (A) and cooperating with the working tool holding member () for receiving therebetween the working tool () for joint rotation therewith; central securing element () for securing the working tool () between the working tool holding member () and the working tool holding counter-member (); and at least one coupling element () associated with the working tool holding member (), radially spaceable from the central securing element () and having a rotary stop for forming a releaseable plug-in connection with at least one through-bore () formed in the working tool ().

Growing community of inventors

Eschen, Liechtenstein

Matthaeus Hoop