公开(公告)号：US11892362B2

公开(公告)日：2024-02-06

申请号：US17444313

申请日：2021-08-03

Applicant: MITUTOYO CORPORATION

Inventor： Yuichi Ichikawa ,  Osamu Saito

IPC: G01L1/04 ,  G01B3/22 ,  G01B5/00 ,  G01L5/108

CPC classification number: G01L1/044 ,  G01B3/22 ,  G01B5/0016 ,  G01L1/042 ,  G01L5/108

Abstract: There is provided a measuring device (dial gauge) capable of performing measurement with a desired measuring force regardless of the posture of the measuring device.
A dial gauge in an exemplary embodiment of the present invention includes a measuring force adjustment unit provided to a body case and capable of moving and being positioned and fixed in a direction substantially parallel to a moving direction of a spindle.
A biasing means has one end directly or indirectly engaged with the spindle and the other end directly or indirectly engaged with the measuring force adjustment unit, and biases the spindle toward a tip end.
The measuring force adjustment unit includes an external thread portion and a connection supporting member having one end screwed with the external thread portion and the other end coupled to the biasing means. The connection supporting member is screw-fed by rotationally operating the external thread portion in such a manner that a position of the connection supporting member is changed and fixed.

公开(公告)号：US20190353505A1

公开(公告)日：2019-11-21

申请号：US16414333

申请日：2019-05-16

Applicant: Mitutoyo Corporation

Inventor： Masashi Tsuboi ,  Yuichi Ichikawa

IPC: G01D5/347

Abstract: A relative position identifying unit identifies a relative position of a scale to a light receiving unit. An absolute position identifying unit identifies an absolute position of the scale at a timing of execution of a synchronization instruction. A determining unit determines a measurement reference position based on the absolute position at the timing and the relative position at the timing. A current position calculator calculates a current position of the scale based on the measurement reference position and the relative position identified by the relative position identifying unit. A control unit as a synchronization instructing unit executes the synchronization instruction on the absolute position identifying unit and the determining unit.