Abstract: A reaming element for a reaming tool capable of being driven to rotate about an axis of rotation for fine machining of a prefabricated bore, the reaming element having a front main cutting edge and a secondary cutting edge adjoining the radially outward end of the main cutting edge, wherein the main cutting edge and the secondary cutting edge delimit a chip-removing surface, and a polished chamfer, which forms a support zone for guidance on the wall of the bore, is formed between the secondary cutting edge and the rear flank face thereof. The support zone is smaller than the polished chamfer and is kept a lateral distance away from the secondary cutting edge by an intermediate part, more particularly, a recessed intermediate part of the polished chamfer.

Abstract: A reaming tool, having a rotationally drivable main body (16) and at least one cutting body (18) fastened thereto. The at least one cutting body has at least one reaming blade (26) at the edge of a rake face (28). A chip-forming step (32) and/or chip-breaking elements (34) are formed in the rake face (28) and the reaming blade (26) has a ground cutting edge (40, 42, 44).

Abstract: The invention relates to a reaming element for a reaming tool capable of being driven to rotate about an axis of rotation for fine machining of a prefabricated bore, said reaming element having a front main cutting edge and a secondary cutting edge adjoining the radially outward end of the main cutting edge, wherein the main cutting edge and the secondary cutting edge delimit a chip-removing surface, and a polished chamfer, which forms a support zone for guidance on the wall of the bore, is formed between the secondary cutting edge and the rear flank face thereof. According to the invention the support zone is smaller than the polished chamfer and is kept a lateral distance away from the secondary cutting edge by an intermediate part, more particularly a recessed intermediate part, of the polished chamfer.

Abstract: The invention relates to a reaming tool, comprising a rotationally drivable main body (16) and at least one cutting body (18) fastened thereto. The at least one cutting body has at least one reaming blade (26) at the edge of a rake face (28). According to the invention, a chip-forming step (32) and/or chip-breaking elements (34) are formed in the rake face (28) and the reaming blade (26) has a ground cutting edge (40, 42, 44).

Abstract: The main body (12) of a machine tool (10) comprises a plate seat (18) having a plate element (16) arranged thereon. The plate element (16) has at least one plate edge (38), which protrudes freely to the outside over the plate seat (18) and rests against a bottom support surface of the plate seat (18). The plate element (16) can be fixed to the plate seat (18) by way of a bolt (20) extending through a bore hole in the plate element (16). A first brace (22) for the plate element (16) is provided on the plate seat (18), said brace having a support surface (34) against which the plate element (16) rests non-positively with a lateral plate surface. A further brace (24) is designed on the plate seat (18) for a lateral plate surface of the plate element (16) to rest against non-positively.

Abstract: A rotating machine tool has a base with a rotating axis, at least one pocket formed in the base and at least one blade support holding a cutting plate. Two side surfaces of the blade support sit against a side support surface, respectively, the blade support side surfaces making an angle between them, and the base of the blade support sits against a base support surface of the pocket, the blade support being clamped in the pocket removably by way of a clamp element. The cutting plate protrudes over the blade support with an effective blade and over the base outward.

Abstract: The invention relates to a rotating cutting tool, in particular a boring tool for use in machine tools. The cutting tool comprises at least one cutting insert, designed as an indexable insert, that has an active main blade located near a corner of the insert, the outer end of said blade defining a circular flight path radius (R) as the blade rotates, said blade penetrating into a work piece at a pre-determined cutting depth (t) near a pre-formed round hole. Also provided is a secondary blade that is disposed opposite to an advancing direction and that aligns with the outermost end of the main blade, the entire length of said blade having a smaller radius than the circular flight path radius (R) of the main blade, wherein a secondary blade free surface aligns with the secondary blade opposite to the direction of rotation.

Abstract: The main body (12) of a machine tool (10) comprises a plate seat (18) having a plate element (16) arranged thereon. The plate element (16) has at least one plate edge (38), which protrudes freely to the outside over the plate seat (18) and rests against a bottom support surface of the plate seat (18). The plate element (16) can be fixed to the plate seat (18) by way of a bolt (20) extending through a bore hole in the plate element (16). A first brace (22) for the plate element (16) is provided on the plate seat (18), said brace having a support surface (34) against which the plate element (16) rests non-positively with a lateral plate surface. A further brace (24) is designed on the plate seat (18) for a lateral plate surface of the plate element (16) to rest against non-positively.

Abstract: The invention relates to a machine tool with an adjustable cutting plate. The rotating machine tool substantially comprises a base member with a rotating axis, at least one pocket formed in the base member and at least one blade support holding a cutting plate. Two side surfaces of the blade support sit against a side support surface, respectively, said blade support side surfaces making an angle between them, and the base of the blade support sits against a base support surface of the pocket, the blade support being clamped in the pocket removably by way of a clamp element. The cutting plate protrudes over the blade support with an effective blade and over the base member outward.

Abstract: The invention relates to a rotating cutting tool, in particular a boring tool for use in machine tools. The cutting tool comprises at least one cutting insert, designed as an indexable insert, that has an active main blade located near a corner of the insert, the outer end of said blade defining a circular flight path radius (R) as the blade rotates, said blade penetrating into a work piece at a pre-determined cutting depth (t) near a pre-formed round hole. Also provided is a secondary blade that is disposed opposite to an advancing direction and that aligns with the outermost end of the main blade, the entire length of said blade having a smaller radius than the circular flight path radius (R) of the main blade, wherein a secondary blade free surface aligns with the secondary blade opposite to the direction of rotation.

Abstract: The invention relates to a machine tool for use in tool machines, comprising a cutting element which is preferably configured as a cutting ring and at least two insert seats that are provided in the cutting element at distance to each other in the circumferential direction. The insert seats are fitted with at least one group of at least two identical insert tips that are detachably arranged therein and that have one working edge each, the effective working edges of the insert tips of one group being cut to the same nominal size. The insert tips are configured as indexable inserts, every single indexable insert of a group being associated with a defined insert seat in all possible positions of adjustment, and the indexable inserts of a group having at least two working edges each, one of these edges being always in the effective and at least one other edge being in the ineffective position, depending on the position of the indexable inserts in the associated insert seats.