Proposed is a machine tool unit with a stator unit and a rotor unit which is rotatable about an axis of rotation, wherein the rotor unit comprises a spindle head with a tool-holding unit having a tool-clamping device, wherein a testing device is provided for testing the clamping state of the tool, the testing device having precisely one sensor head for sensory detection. To improve the precision, the sensor head is arranged at a fixed position on the stator unit in such a manner that it measures the distance to an end-side part of the spindle head rotating relative to the sensor head, wherein the testing device is designed to record a temporal/position-related sequence of at least two distance values and/or of at least two successive series of in each case at least two distance values, in order to determine an axial run-out error.

Proposed is a machine tool unit with a stator unit and a rotor unit which is rotatable about an axis of rotation, wherein the rotor unit comprises a spindle head with a tool-holding unit having a tool-clamping device, wherein a testing device is provided for testing the clamping state of the tool, the testing device having precisely one sensor head for sensory detection. To improve the precision, the sensor head is arranged at a fixed position on the stator unit in such a manner that it measures the distance to an end-side part of the spindle head rotating relative to the sensor head, wherein the testing device is designed to record a temporal/position-related sequence of at least two distance values and/or of at least two successive series of in each case at least two distance values, in order to determine an axial run-out error.

A 5-axis processing machine includes a mounting table on which a tool and a work piece are placed; and a control unit; wherein the mounting table is moved relatively by three linear axes and two rotation axes based on NC data, the two rotation axes include a first axis and a second axis, when the control unit calculates a rotation angle of the two rotation axes, the control unit acquires an axis vector Na that specifies an actual first axis direction and an axis vector Nc that specifies an actual second axis direction, the control unit calculates a posture vector K that specifies a posture at a time of processing the work piece with respect to the tool from the NC data, the control unit calculates, as a solution of a following equation (4), an actual rotation angle θ around the first axis of the tool.

A 5-axis processing machine includes a mounting table on which a tool and a work piece are placed; and a control unit; wherein the mounting table is moved relatively by three linear axes and two rotation axes based on NC data, the two rotation axes include a first axis and a second axis, when the control unit calculates a rotation angle of the two rotation axes, the control unit acquires an axis vector Na that specifies an actual first axis direction and an axis vector Nc that specifies an actual second axis direction, the control unit calculates a posture vector K that specifies a posture at a time of processing the work piece with respect to the tool from the NC data, the control unit calculates, as a solution of a following equation (4), an actual rotation angle θ around the first axis of the tool.

A 5-axis processing machine includes a mounting table on which a tool and a work piece are placed; and a control unit including a calculation unit, a determination unit, and a correction unit; wherein the mounting table is moved relatively by three linear axes and two rotation axes based on NC data, the two rotation axes include a first axis and a second axis, the calculation unit calculates an orientation of the work piece with respect to the tool at a time of processing from NC data and a directions of rotation centers of an actual first axis and an actual second axis, the determination unit determines whether or not the calculated orientation of the work piece is included in an inoperable range, the inoperable range being the inoperable angle range, and the correction unit corrects the orientation of the work piece with respect to the tool.

The present invention provides a planar three-dimensional displacement sensor for a multiaxis machining device. With the measurement of the (planar) three-dimensional displacement sensor in the multiaxis machining device, the multiaxis machining device and a multiaxis machining compensation method are able to eliminate various deformation effects effectively.

The present invention provides a planar three-dimensional displacement sensor for a multiaxis machining device. With the measurement of the (planar) three-dimensional displacement sensor in the multiaxis machining device, the multiaxis machining device and a multiaxis machining compensation method are able to eliminate various deformation effects effectively.

An induction coil structural unit has an induction coil into which a sleeve portion of a tool holder can be inserted. In order to increase a degree of automation, a defined-preset test current is applied to the induction coil even before the beginning of an inductive heating process, a time/current curve is determined for the current and the inserted sleeve portion is recognized. Heating parameters are established for the sleeve portion and the inductive heating process is started on the basis of the heating parameters. The inductive heating process is interrupted at least once and, during the interruption, a defined-preset check current is applied and a further time/current curve for the sleeve portion is determined for this check current. A decision is made on the basis of the further time/current curve of the check current whether the heating process is continued or permanently ended.

An induction coil structural unit has an induction coil into which a sleeve portion of a tool holder can be inserted. In order to increase a degree of automation, a defined-preset test current is applied to the induction coil even before the beginning of an inductive heating process, a time/current curve is determined for the current and the inserted sleeve portion is recognized. Heating parameters are established for the sleeve portion and the inductive heating process is started on the basis of the heating parameters. The inductive heating process is interrupted at least once and, during the interruption, a defined-preset check current is applied and a further time/current curve for the sleeve portion is determined for this check current. A decision is made on the basis of the further time/current curve of the check current whether the heating process is continued or permanently ended.

The present invention relates to an apparatus and a method of automatically converting thermal displacement compensation parameters of a machine tool, which automatically convert a compensation parameter of a thermal displacement compensation equation of a machine tool so that the compensation parameter is optimized to a current thermal displacement state of the machine tool in real time based on Z-directional or Y-directional displacement data of a tool tip end of a reference tool measured by a tool measuring unit according to an operation state of the machine tool or various kinds of machine tools or thermal displacement data of the machine tool calculated by measuring a processed portion of a processed material, and temperature data measured by a temperature measuring unit, to minimize a processing error according to thermal displacement and improve processing accuracy of the machine tool.