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公开(公告)号：US11828671B2
公开(公告)日：2023-11-28
申请号：US17253022
申请日：2019-08-21
申请人： Franz Kessler GmbH
发明人： Bernd Keibach , Manuel Fischer
摘要： The invention relates to a method for determining the mass and the center of gravity location of a load (10) of a moving system (12), particularly of a machine tool (14), which comprises a support (20) that is for accommodating the load (10) and is able to rotate around a first axis (16) and a second axis (18) as well as electronically controlled drive units (22, 24) for rotating the support (20) around the first axis (16) and around the second axis (18), wherein
a total moment of inertia and a holding torque with regard to the first axis (16) are determined in a loaded state;
a total moment of inertia and a holding torque with regard to the second axis (18) are determined in the loaded state; and
the mass and the center of gravity location of the load (10) relative to the support (20) are determined based on the total moments of inertia and the holding torques with regard to the first axis (16) and second axis (18).
The invention also relates to a moving system (12), which is equipped to determine the mass and the center of gravity location of a load (10) according to such a method.-
公开(公告)号：US20210379718A1
公开(公告)日：2021-12-09
申请号：US17303545
申请日：2021-06-02
申请人： FRANZ KESSLER GMBH
发明人： Joachim VAN SPRANG , Harald WEING , Daniel WEIß
摘要： A method for sensing a cutting-edge load in a motor-driven machine-tool unit having a stator unit and a rotor unit that is rotatable at least about an axis of rotation. The rotor unit includes a tool receiving unit that is adjustable along the axis of rotation and to which a clamping force can be applied, for fixing and clamping a releasably fixable tool shank of a tool. A tool head of the tool includes at least one individual cutting edge. A tool sensor is provided for sensing the load on the tool, the tool sensor being realized as an individual-cutting-edge sensor for sensing a cutting-edge load on the individual cutting edge.
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3.发明申请公开(公告)号：US20190381623A1
公开(公告)日：2019-12-19
申请号：US16440143
申请日：2019-06-13
申请人： FRANZ KESSLER GMBH
发明人： Joachim Van Sprang , Harald Weing
摘要： 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.
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4.发明申请公开(公告)号：US20190076976A1
公开(公告)日：2019-03-14
申请号：US16131018
申请日：2018-09-13
申请人： Franz Kessler GmbH
发明人： Manuel Gerst , Udo Tuellmann , Joachim Van Sprang
摘要： A motor spindle is provided for a machine tool comprising a spindle housing for stationary mounting on the machine, a spindle assembly, removable from the spindle housing, with a rotor that is supported in an integrated bearing unit so as to be rotatable relative to the spindle housing, and a clamping mechanism for a tool, the clamping mechanism being actuatable via a clamping piston that is movable in an annular cylinder in the spindle housing, wherein the spindle assembly is designed with internal cooling that is suppliable with a cooling fluid via a coolant supply, wherein the coolant supply has a rotary feedthrough with an interface between a stationary component and a rotating component of the coolant supply, and wherein the bearing unit is also removable when the spindle assembly is removed from the spindle housing.
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公开(公告)号：US12030149B2
公开(公告)日：2024-07-09
申请号：US17303545
申请日：2021-06-02
申请人： FRANZ KESSLER GMBH
发明人： Joachim Van Sprang , Harald Weing , Daniel Weiß
IPC分类号： B23Q17/09 , G01L5/00 , G05B19/4065 , B23B49/00
CPC分类号： B23Q17/0966 , G01L5/0076 , G05B19/4065 , B23B49/00 , G05B2219/37355
摘要： A method for sensing a cutting-edge load in a motor-driven machine-tool unit having a stator unit and a rotor unit that is rotatable at least about an axis of rotation. The rotor unit includes a tool receiving unit that is adjustable along the axis of rotation and to which a clamping force can be applied, for fixing and clamping a releasably fixable tool shank of a tool. A tool head of the tool includes at least one individual cutting edge. A tool sensor is provided for sensing the load on the tool, the tool sensor being realized as an individual-cutting-edge sensor for sensing a cutting-edge load on the individual cutting edge.
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公开(公告)号：US11806822B2
公开(公告)日：2023-11-07
申请号：US16321425
申请日：2017-07-10
申请人： Franz Kessler GmbH
发明人： Manuel Gerst , Joachim Van Sprang , Stefan Reiner
CPC分类号： B23Q17/00 , B23Q17/2404 , B23B49/00
摘要： A spindle arrangement for a machine tool comprising a spindle housing, which can be inserted and fixed in the machine tool, a spindle shaft being accommodated in the spindle housing, and a spindle head projecting from the spindle housing. At least one optical element is located on or near the spindle head, the optical element emits light in the region of the spindle head and/or to optically capture the region near the spindle head. At least one recess is provided on or near the spindle head, the optical element being insertable into the recess. The optical element is provided with at least two contacts arranged on the front face on different radial levels or in different axial regions relative to the screw axis on the end of the optical element which is screwed into the recess.
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公开(公告)号：US20210299808A1
公开(公告)日：2021-09-30
申请号：US17210880
申请日：2021-03-24
申请人： FRANZ KESSLER GMBH
发明人： Joachim VAN SPRANG , Harald WEING
摘要： There is proposed a method for examining the clamping state of a tool holder or tool which is clamped in a tool clamping device of a rotor unit of a motor-driven machine tool unit, with the spacing of the sensor head from a component of the rotor unit being measured, with a recording of at least one time and/or position-related sequence of the spacing values measured with the sensor head, wherein for improved integration of the method the recording of a first and a second time and/or position-related sequence is carried out during an acceleration of the rotation of the rotor unit with respect to the stator unit, in particular when the rotor unit is started up, wherein the time and/or position-related information of the sequence vectors of the first and/or second sequence is scaled using the respective associated current speed (v0).
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公开(公告)号：US20190210118A1
公开(公告)日：2019-07-11
申请号：US16289961
申请日：2019-03-01
申请人： FRANZ KESSLER GMBH
CPC分类号： B23B31/28 , B23B31/003 , B23B31/261 , B23B2260/008 , B23B2260/0082 , B23B2260/062 , F16C21/00 , F16C35/10 , F16C35/12
摘要： A release unit for a machine tool spindle, in particular motor spindle, for releasing a tool clamp, wherein the release unit comprises at least one adjustment element which can be linearly adjusted along an adjustment path for actuating the tool clamp, which release unit reduces the structural and/or economic complexity. This is achieved according to the invention in that the release unit is constructed as an electric motor which comprises an electromagnetic drive system having a hollow-cylindrical rotor shaft which rotates about a rotation axis, in that the linearly adjustable adjustment element is constructed as a spindle element of a conversion unit for converting the rotation of the electric motor into a linear adjustment and in that the rotor shaft is constructed as a spindle nut of the conversion unit which rotates about the rotation axis.
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公开(公告)号：US10259090B2
公开(公告)日：2019-04-16
申请号：US15866750
申请日：2018-01-10
申请人： FRANZ KESSLER GMBH
发明人： Joachim Van Sprang
IPC分类号： B23Q17/00
摘要： A motor-driven machine-tool unit such as a multi-axis turning head or a motor spindle, having a stator unit and at least one rotor unit that is rotatable about a rotation axis, wherein the rotor unit comprises at least one tool receptacle unit having a tool clamping device that is adjustable in a longitudinal direction of the rotation axis and impingeable with a clamping force, for fixing and bracing a releasably fixable tool, wherein comparatively high requirements are met, in particular, in terms of the accuracy of the machining and/or the reliability in the machining. According to the present invention, this is achieved above all in that at least two clamping force sensors are provided for detecting the bracing of the tool clamping device, in particular the clamping force that is caused in the fixing and bracing.
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公开(公告)号：US20210223130A1
公开(公告)日：2021-07-22
申请号：US17253022
申请日：2019-08-21
申请人： Franz Kessler GmbH
发明人： Bernd Keibach , Manuel Fischer
摘要： The invention relates to a method for determining the mass and the center of gravity location of a load (10) of a moving system (12), particularly of a machine tool (14), which comprises a support (20) that is for accommodating the load (10) and is able to rotate around a first axis (16) and a second axis (18) as well as electronically controlled drive units (22, 24) for rotating the support (20) around the first axis (16) and around the second axis (18), wherein a total moment of inertia and a holding torque with regard to the first axis (16) are determined in a loaded state; a total moment of inertia and a holding torque with regard to the second axis (18) are determined in the loaded state; and the mass and the center of gravity location of the load (10) relative to the support (20) are determined based on the total moments of inertia and the holding torques with regard to the first axis (16) and second axis (18). The invention also relates to a moving system (12), which is equipped to determine the mass and the center of gravity location of a load (10) according to such a method.
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