-
公开(公告)号：US20180292238A1
公开(公告)日：2018-10-11
申请号：US15943417
申请日：2018-04-02
Applicant: Mitutoyo Corporation
Inventor： Hiroatsu Mori
CPC classification number: G01D5/24457 , G01D3/08 , G01D5/206 , G01D5/2457 , G01D5/34715
Abstract: Provided is an encoder that can sense an abnormality in the attitude of a detector with respect to a scale. An encoder includes a scale and a detector, the scale being provided on one measurement target part with marks arranged on the scale, and the detector being provided on another measurement target part and configured to detect an amount of relative movement with the scale. The scale includes a sensing unit that senses the attitude of the detector with respect to the scale, and thus even in a case where an abnormality in the attitude of the detector with respect to the scale cannot be sensed on the basis of a change in a signal read by a reading unit, the abnormality can nevertheless be sensed.
-
公开(公告)号：US11536590B2
公开(公告)日：2022-12-27
申请号：US16911865
申请日：2020-06-25
Applicant: MITUTOYO CORPORATION
Inventor： Kenichi Hayashi , Naoki Kobayashi , Hiroatsu Mori
IPC: G01D5/244
Abstract: An offset correction device includes: an amplitude adjuster that adjusts an amplitude of a detection signal output from an encoder by adjusting a gain of the detection signal so that the amplitude is within a predetermined range; an offset corrector that corrects an offset of an amplitude center of the detection signal; and a storage that stores a relationship between the gain and an offset amount in advance, wherein the offset corrector refers to the relationship stored in the storage when the amplitude adjuster changes the gain, obtains the offset amount corresponding to the changed gain, and corrects the offset based on the obtained offset amount.
-
Patent Agency Ranking
公开(公告)号：US20190316936A1
公开(公告)日：2019-10-17
申请号：US16362778
申请日：2019-03-25
Applicant: MITUTOYO CORPORATION
Inventor： Hiroatsu Mori
IPC: G01D5/20
Abstract: An electromagnetic induction type encoder, wherein a detection head has a drive coil generating magnetic flux, wherein a scale has a plurality of connection coils arrayed in a fundamental period λ in a measurement axis direction, are electromagnetically coupled with the magnetic flux generated by the drive coil and generates magnetic flux fluctuating in a predetermined spatial period in the measurement axis direction, wherein the detection head has a plurality of receiver coils arrayed in the fundamental period λ in the measurement axis direction and are electromagnetically coupled with the magnetic flux generated by the plurality of connection coils and detects a phase of the magnetic flux, wherein λ/2−2d
-
公开(公告)号：US11320287B2
公开(公告)日：2022-05-03
申请号：US16896842
申请日：2020-06-09
Applicant: MITUTOYO CORPORATION
Inventor： Hiroatsu Mori , Kenichi Hayashi , Naoki Kobayashi
Abstract: An electromagnetic induction type encoder, wherein at least one of widths of a first transceiver coil, a first plurality of conductors and a first receiver coil of a first track in a direction vertical to facing direction between a detection head and a scale and a measurement direction is different from corresponding width of a second transceiver coil, a second plurality of conductors and a second receiver coil in the direction vertical to the facing direction and the measurement direction.
-
公开(公告)号：US09207101B2
公开(公告)日：2015-12-08
申请号：US14206439
申请日：2014-03-12
Applicant: MITUTOYO CORPORATION
Inventor： Hiroatsu Mori , Tatsuya Narumi
CPC classification number: G01D5/268 , G01D5/34753
Abstract: An optical encoder includes a light source fiber holder holding a light source fiber and a collecting lens therein, and a nut. The light source fiber holder includes an end fitting together with a light source base. An outer circumferential surface of the end includes an inclined surface inclining such that a cross-sectional area increases as the surface approaches the light source fiber; and a projection capable of advancing into a groove of the light source base. The optical encoder includes a light source connector and the light source fiber holder.
Abstract translation: 光学编码器包括保持光源纤维和收集透镜的光源光纤保持器和螺母。 光源光纤保持器包括与光源基座一起配合的端部。 端部的外周面包括倾斜表面，使得横截面积随着表面接近光源光纤而增加; 以及能够前进到光源基座的凹槽中的突起。 光学编码器包括光源连接器和光源光纤保持器。
-
公开(公告)号：US10809100B2
公开(公告)日：2020-10-20
申请号：US16362778
申请日：2019-03-25
Applicant: MITUTOYO CORPORATION
Inventor： Hiroatsu Mori
IPC: G01D5/20
Abstract: An electromagnetic induction type encoder, wherein a detection head has a drive coil generating magnetic flux, wherein a scale has a plurality of connection coils arrayed in a fundamental period λ in a measurement axis direction, are electromagnetically coupled with the magnetic flux generated by the drive coil and generates magnetic flux fluctuating in a predetermined spatial period in the measurement axis direction, wherein the detection head has a plurality of receiver coils arrayed in the fundamental period λ in the measurement axis direction and are electromagnetically coupled with the magnetic flux generated by the plurality of connection coils and detects a phase of the magnetic flux, wherein λ/2−2d
-
公开(公告)号：US10677614B2
公开(公告)日：2020-06-09
申请号：US15943417
申请日：2018-04-02
Applicant: Mitutoyo Corporation
Inventor： Hiroatsu Mori
Abstract: Provided is an encoder that can sense an abnormality in the attitude of a detector with respect to a scale. An encoder includes a scale and a detector, the scale being provided on one measurement target part with marks arranged on the scale, and the detector being provided on another measurement target part and configured to detect an amount of relative movement with the scale. The scale includes a sensing unit that senses the attitude of the detector with respect to the scale, and thus even in a case where an abnormality in the attitude of the detector with respect to the scale cannot be sensed on the basis of a change in a signal read by a reading unit, the abnormality can nevertheless be sensed.
-
-
-
-
-
-
Search Results
7
records
(took 0.011 seconds)
