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1. 发明申请

US20200012256A1 MEASURING DEVICE FOR A SPINDLE OR A ROTARY TABLE 审中-公开
公开(公告)号：US20200012256A1
公开(公告)日：2020-01-09
申请号：US16458761
申请日：2019-07-01
申请人： DR. JOHANNES HEIDENHAIN GmbH
发明人： Johann MITTERREITER
IPC分类号： G05B19/402 , G01D5/12 , G01B21/04
摘要： A measuring device for a spindle or for a rotary table includes at least two first and second position sensing elements and a scale element, having a first and second graduations and being rotatable about an axis of rotation relative to the position sensing elements. The first graduation includes regular structures arranged in parallel next to one another along a first direction, having a directional component in the circumferential direction. The second graduation includes regular structures arranged in parallel next to one another along a second direction, having a directional component in the axial direction. The first position sensing elements are offset from one another in the circumferential direction, and are able to scan the first graduation so that the position of the scale element in a plane having an orthogonal orientation to the axis of rotation is determinable. In addition, at least one of the first position sensing elements is able to determine an angular position of the scale element in relation to the first position sensing elements in absolute terms within and across a rotation. The second position sensing elements are offset from one another in the circumferential direction, and are able to scan the second graduation, and the axial position of the scale element is able to be determined.

2. 发明申请

US20210003393A1 ANGLE MEASURING DEVICE AND METHOD FOR OPERATING AN ANGLE MEASURING DEVICE 有权
公开(公告)号：US20210003393A1
公开(公告)日：2021-01-07
申请号：US16920348
申请日：2020-07-02
申请人： DR. JOHANNES HEIDENHAIN GmbH
发明人： Johann MITTERREITER , Sebastian GRUBER , Alois BARTLECHNER
IPC分类号： G01B11/27 , G01B3/56 , G01B7/31
摘要： An angle measuring device includes first and second component groups and a bearing. The first component group includes a scale element having a first graduation. The second component group has a first modular unit, including a position sensor, and a second modular unit, including first, second, and third position transducers, and a compensation coupling. The first and second modular units are connected in a torsionally stiff but axially and radially flexible manner. The angle measuring device is operable in first and second modes. In the first mode, the first graduation is scannable by the position sensor to determine a first angular position. In the second mode, the first graduation or a further graduation situated on the scale element is scannable by the position transducers to determine further angular positions. A corrected relative angular position is determinable based on the first angular position and the further angular positions.

3. 发明申请

US20230054355A1 DEVICE AND METHOD FOR DETERMINING A CONTACT BETWEEN A TOOL AND A WORKPIECE 有权
公开(公告)号：US20230054355A1
公开(公告)日：2023-02-23
申请号：US17890670
申请日：2022-08-18
申请人： DR. JOHANNES HEIDENHAIN GmbH
发明人： Ingo JOACHIMSTHALER , Sebastian SCHMIDT , Johann MITTERREITER , Robert METZKE , Christian REBELEIN , Alois BARTLECHNER , Sebastian GRUBER
IPC分类号： G01B7/30 , B23Q17/22 , G05B19/401
摘要： In a device and method for determining a contact between a tool and a workpiece, which are displaceable relative to each other, the tool or workpiece being rotationally fixedly connected to a shaft, the device includes a measuring arrangement including a measuring scale rotationally fixedly disposed on the shaft and at least one position encoder disposed in a stationary manner relative to the shaft, and a processing device. The position encoder is adapted to scan the measuring scale and to generate position values indicating a position of the shaft. The position values are fed to the processing device, which determines contact between the tool and the workpiece by evaluating a progression of the position values and signals the result of the evaluation by the status of a displacement signal.

4. 发明申请

US20180283908A1 ANGLE MEASUREMENT SYSTEM 审中-公开
公开(公告)号：US20180283908A1
公开(公告)日：2018-10-04
申请号：US15939062
申请日：2018-03-28
申请人： DR. JOHANNES HEIDENHAIN GmbH
发明人： Johann MITTERREITER , Sonja NIEMEYER , Jürgen HERTENBERGER , Georg KAFFL
IPC分类号： G01D5/347 , G01D11/24 , F16C33/66 , G01D11/02 , H02K11/21
摘要： An angle measurement system includes a first component group, a second component group, and bearing elements arranged between the component groups. A gap extends at an axial extension between a first component and a second component so that the components are disposed along both sides of the gap relative to each other without coming into contact. An annular first body is mounted on the first component, which is disposed without contact in relation to the second component group. The second component includes a section, which is separated by a radial gap and is located radially outside and across from a region of the first body that extends in the axial direction, and the first body is situated radially outside and circumferentially about the axis in relation to the bearing elements. The first body is able to hold lubricant. Alternatively or additionally, a corresponding annular second body is fixed in place on the second component.

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