A broaching tool, comprising a shank, a body and a cutting head that comprises at least one rake face. The rake face comprises a cutting edge that comprises a cutting corner at a forward end of the cutting head. The rake face is configured such that upon simultaneously rotating the broaching tool about the axis of the broaching tool and advancing the broaching tool along the axis of the broaching tool in a forward direction, the first corner travels in a first circular helix pattern. Also, a method of forming one or more grooves in a bore-containing structure, the method comprising simultaneously rotating a broaching tool and a bore-containing structure relative to one another about the axis, and moving the broaching tool and the bore-containing structure relative to one another along the axis. Also, methods of making broaching tools, and broaching machines.

A tool (2) for machining workpieces, comprising a carrier (4) rotating in an axial direction (A) during operation, and further comprising multiple cutting segments (6), which are fastened to the carrier (4) in a radial direction (R), characterized in that at least one hydraulic clamping unit (21) is attached to the carrier (4) for clamping at least one of the cutting segments (6) to the carrier (4).

A turn broach machine may include a machining member machining a target to be cut; and an adaptor which is provided under the machining member, supports the machining member, and adjusts a position of the machining member. At the time of adjusting a position of a segment of the machining member from a plate provided in an adapter, the segment moves on an adjusting plate that is mechanically defined, such that work accuracy may be improved to increase marketability and a work time may be decreased to improve work convenience and productivity.

A tool for the turning/turn broaching of workpieces is provided, including a carrier which can be attached directly or indirectly to a machine tool with a plurality of segments which are fastened to the carrier. Each of the segments is provided with a plurality of tool bits. In addition, each of the segments is attached to the carrier by at least two fastening elements, which act obliquely to a plane (E) lying perpendicular to the rotational axis (R) of the tool.

The invention relates to a tool for rotary-broaching workpieces, having a support (10) which can be directly or indirectly attached to a machine tool and having multiple segments (12) which are secured to the support (10), wherein multiple receiving areas for cutting inserts are provided on each of the segments (12), and wherein a hydraulic clamping unit (42) is provided on the support (10) for each segment (12), said segment (12) being clampable on the support (10) by means of the clamping unit (42).