A method and a device for machining a workpiece rotating about a rotational axis. The machining point moves along the cutting edge of a cutting edge plane and the surface to be machined in a rolling movement on an advancement plane not intersected by the rotational axis. A pivot drive implements a large enough pivot angle so that a first workpiece surface is machined by a machining point moving along the first cutting edge in a first machining step. In a second machining step, a second workpiece surface is machined, wherein the machining point moves along the second cutting edge and the second workpiece surface. The cutting edge has a curvature radius smaller than the distance from the pivot axis of the holder to the cutting edge. The holder can additionally be displaced on the advancement plane with a movement component in a direction transverse to the rotational axis.

A method and a device for machining a workpiece rotating about a rotational axis. The machining point moves along the cutting edge of a cutting edge plane and the surface to be machined in a rolling movement on an advancement plane not intersected by the rotational axis. A pivot drive implements a large enough pivot angle so that a first workpiece surface is machined by a machining point moving along the first cutting edge in a first machining step. In a second machining step, a second workpiece surface is machined, wherein the machining point moves along the second cutting edge and the second workpiece surface. The cutting edge has a curvature radius smaller than the distance from the pivot axis of the holder to the cutting edge. The holder can additionally be displaced on the advancement plane with a movement component in a direction transverse to the rotational axis.

The invention relates to a machine tool (1) comprising a clamping holder (10) which extends along a longitudinal axis (3) and a cutting element (20) that can be inserted into an open tool-side recess (40), which passes through the clamping holder (10), transversely to the longitudinal axis (3). The machine tool (1) has a stop (30) which is secured in the recess (40) and against which the cutting element (20) rests in the direction transverse to the longitudinal axis (3).

The invention relates to a machine tool (1) comprising a clamping holder (10) which extends along a longitudinal axis (3) and a cutting element (20) that can be inserted into an open tool-side recess (40), which passes through the clamping holder (10), transversely to the longitudinal axis (3). The machine tool (1) has a stop (30) which is secured in the recess (40) and against which the cutting element (20) rests in the direction transverse to the longitudinal axis (3).

Provided is a tool bracket in which a spindle body is inserted and the spindle body can be smoothly tilted. The tool bracket includes a housing including a cylinder chamber extending along a cylinder axis; a tilting body having a tilt axis configured to tilt about a tilt center, the tilting body to which a spindle body is attachable, the tilting body tiltable with respect to the cylinder axis; a rotation stopper member extending in a radial direction from the tilt axis, the rotation stopper member disposed in the tilting body; and a receiving groove extending along the cylinder axis, the receiving groove arranged in the housing.

Provided is a tool bracket in which a spindle body is inserted and the spindle body can be smoothly tilted. The tool bracket includes a housing including a cylinder chamber extending along a cylinder axis; a tilting body having a tilt axis configured to tilt about a tilt center, the tilting body to which a spindle body is attachable, the tilting body tiltable with respect to the cylinder axis; a rotation stopper member extending in a radial direction from the tilt axis, the rotation stopper member disposed in the tilting body; and a receiving groove extending along the cylinder axis, the receiving groove arranged in the housing.

The invention relates to an insert holder for a tool for turning a machine tool, comprising an insert holder body (2), the head (22) of which is intended to receive a cutting insert (3), characterized in that at least two measurement recesses (4, 5) are provided in the insert holder body (2) on the side of the head (22), said measurement recesses (4, 5) being arranged symmetrically relative to the neutral fiber (6) of the insert holder body (2) and centered on the neutral fiber (6). The measurement recesses (4, 5) have, respectively, a planar bottom (41, 51) that is parallel to the direction (Y) of the component of the tangential cutting force of the insert holder to be measured, and parallel to the longitudinal direction (X, Z) of the insert holder body (2). The insert holder also comprises at least one first strain gauge (71, 72, 73, 74) configured such as to measure the change in shape of the planar bottom (41, 51) of at least one of the measurement recesses (4, 5).

The invention relates to an insert holder for a tool for turning a machine tool, comprising an insert holder body (2), the head (22) of which is intended to receive a cutting insert (3), characterized in that at least two measurement recesses (4, 5) are provided in the insert holder body (2) on the side of the head (22), said measurement recesses (4, 5) being arranged symmetrically relative to the neutral fiber (6) of the insert holder body (2) and centered on the neutral fiber (6). The measurement recesses (4, 5) have, respectively, a planar bottom (41, 51) that is parallel to the direction (Y) of the component of the tangential cutting force of the insert holder to be measured, and parallel to the longitudinal direction (X, Z) of the insert holder body (2). The insert holder also comprises at least one first strain gauge (71, 72, 73, 74) configured such as to measure the change in shape of the planar bottom (41, 51) of at least one of the measurement recesses (4, 5).

In a method for machining a workpiece using a tool, the tool engages with the workpiece and between the two a cutting motion is induced. Furthermore, a relative first vibration motion between workpiece and tool, which is superimposed on the cutting motion, is induced in such a way that one or more characteristic values of the first vibration motion and one or more characteristic values of the cutting motion are adjusted in relation to one another. The superimposed vibration motion can also be induced in such a way that distinctive surface zones of the workpiece are generated.

A microscopic geometry cutting device includes: a controller that outputs a timer count start command in starting a driving program which controls a drive of an X-axis or a Y-axis moving mechanism; an arrival time calculator that calculates an arrival time from when the timer count start command is output till when the cutter arrives at a machining start position in accordance with relative moving speed information of the moving mechanisms and machining start position information of a workpiece W; an elapsed time determiner that determines whether an elapsed time from when the timer count start command is output is coincident with the arrival time and outputs a trigger signal when the elapsed time is coincident with the arrival time; and a reciprocating stage driver that drives the reciprocating stage in a manner that the cutter advances and retracts in a predetermined cutting depth in response to the trigger signal.