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公开(公告)号：US20220190689A1
公开(公告)日：2022-06-16
申请号：US17442957
申请日：2020-03-17
发明人： JOCHEN BRETSCHNEIDER , UWE LADRA , ELMAR SCHÄFERS , TORSTEN SCHÜR
摘要： A machine tool includes a machine control unit to output control signals to drives for machine elements. A tool which machines a workpiece is thereby moved relative to the workpiece in a position-controlled manner. Arranged in a first region of one machine element is an active vibration damper to damp vibration in a second region of the machine elements as the workpiece is machined by the tool. In order to detect the vibration, a first sensor is arranged in the first region of the machine element and a second sensor is arranged on another machine element or in a different region of the one machine element. Actual values detected by the first and second sensors and corresponding target values are supplied to a dual controller which determines on the basis of these values, a resulting manipulated variable for the active vibration damper and actuates the active vibration damper accordingly.
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公开(公告)号：US20210404530A1
公开(公告)日：2021-12-30
申请号：US17355980
申请日：2021-06-23
摘要： A machine tool includes a machine element, an active vibration damper arranged on a region of the machine tool for damping a vibration of the machine element, and a vibration sensor facility arranged to detect the vibration of the machine element at a first point and at a second point of the machine tool, with the vibration of the machine element to be detected being smaller at the second point than at the first point. The active vibration damper is designed to damp the vibration of the machine element as a function of a variation between a first actual value detected by the vibration sensor facility at the first point and a second actual value detected by the vibration sensor facility at the second point.
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公开(公告)号：US20180241376A1
公开(公告)日：2018-08-23
申请号：US15751774
申请日：2016-08-09
发明人： Klaus Geissdörfer , CARSTEN HAMM , THEO REICHEL , ELMAR SCHÄFERS , TORSTEN SCHÜR
IPC分类号： H03H17/02 , G05B19/416
CPC分类号： H03H17/0294 , G05B19/18 , G05B19/416 , G05B2219/41151 , G05B2219/41152 , G05B2219/41231 , H03H17/026 , H03H2017/0295
摘要： The invention relates to a method (100) for switching between desired value filters (26, 28) of a drive means (52) for a machine axis (10, 12) during operation. An input signal (20) is applied to the first and to the second desired value filter (26, 28) for producing a first and a second output signal (23, 33). Then any deviation between the first and the second output signal (23, 33) is determined. If the deviation falls below a threshold value, the first desired value filter (26) is separated from the drive means (52) and substantially simultaneously the second desired value filter (28) is connected to the drive means (52). The desired value filters (26, 28) have different running times (19).
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4.发明申请公开(公告)号：US20190018390A1
公开(公告)日：2019-01-17
申请号：US15780547
申请日：2016-11-24
IPC分类号： G05B19/404 , G05B19/4065 , G05B19/401
摘要： A drivetrain for linear movement of a machine component along a linear guide of a machine includes a motor with a motor-measuring system. A length-measuring system is assigned to the linear guide for determining a position of the machine component. To determine rigidity of the drivetrain, a constant acceleration for the machine component is predetermined by a numerical controller for performing closed-loop control of the movement of the machine component. The numerical controller determines a difference between a position of the machine component derived from the motor-measuring system and a position of the machine component measured at the same time by the length-measuring system during the acceleration phase, and the difference is assigned to the acceleration or to a force required for the acceleration and storage in the numerical controller of the pair of values established in this way and/or of a rigidity value emanating from the pair of values.
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公开(公告)号：US20230330799A1
公开(公告)日：2023-10-19
申请号：US18012836
申请日：2021-06-14
IPC分类号： B23Q11/00
CPC分类号： B23Q11/0032
摘要： A machine tool includes a machine element and a vibration damper arranged on the machine element to damp a vibration mode that occurs during operation of the machine tool and is manifested at a tool center point of the machine tool and at a point of the machine element. The vibration damper is arranged on the point of the machine element, with the vibration mode having a vibration antinode at the point.
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公开(公告)号：US20170329306A1
公开(公告)日：2017-11-16
申请号：US15592933
申请日：2017-05-11
IPC分类号： G05B19/4063 , G05B19/12 , H03L7/02 , G05B19/408 , G05B19/4099
CPC分类号： G05B19/4063 , G05B5/01 , G05B19/12 , G05B19/4083 , G05B19/4099 , G05B2219/31228 , G05B2219/37493 , G05B2219/45187 , H03L7/02
摘要： A closed-loop control device to control a system to be controlled includes a front node, back node, external tapping point, controller and compensating circuit. The compensating circuit has an inner node, frequency filter, front buffer and back buffer. The front node determines a difference; the back node supplies an external sum signal. A setting device automatically suppresses use of the output signal of the front buffer, supplies the back buffer and the back node with a first excitation signal as the compensation signal and detects a first result signal produced by the first excitation signal. The first result signal is one of the control difference, internal sum signal, output filtered signal of the frequency filter or output signal of the front buffer. The setting device evaluates the first excitation signal and the first result signal, sets a parameter of the frequency filter and the second propagation delay.
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