公开(公告)号：US20250076021A1

公开(公告)日：2025-03-06

申请号：US18820519

申请日：2024-08-30

Applicant: MITUTOYO CORPORATION

Inventor： Masashi YAMAJI ,  Chihiro YAMAMOTO ,  Keita OGAWA ,  Shuji HAYASHIDA

IPC: G01B7/02 ,  G01B3/18 ,  G01B3/38 ,  G01B7/00

Abstract: There is provided an automatic measuring apparatus that automates an inexpensive and easy-to-use contact-type measuring device. An automatic measuring apparatus includes a measuring device including a movable element that is displaceable with respect to a fixed element and moves forward and backward to be brought into contact with or away from a workpiece, and a displacement detection part that detects a displacement or position of the movable element, and an automatic operation part that automates the forward/backward movement of the movable element by power. When the movable element is brought into contact with the workpiece, vibration is applied directly or indirectly to at least one of the workpiece and the measuring device in such a manner that contacting surfaces of the workpiece and the measuring device are in close contact with each other by changing a relative position and posture between the workpiece and the measuring device.

公开(公告)号：US20240035816A1

公开(公告)日：2024-02-01

申请号：US18226968

申请日：2023-07-27

Applicant: MITUTOYO CORPORATION

Inventor： Keita OGAWA ,  Shuji HAYASHIDA ,  Masashi YAMAJI

IPC: G01B21/04 ,  G01B3/18 ,  G01B3/00

CPC classification number: G01B21/047 ,  G01B3/18 ,  G01B3/008

Abstract: An automatic measuring device includes a micrometer including a spindle that moves forward and backward to be brought into contact with or away from a workpiece and a displacement detector unit that detects displacement of the spindle, and an automatic operation unit that automates the forward and backward movement of the spindle by power. The automatic operation unit performs a first forward-movement step of moving the spindle forward to bring the spindle into contact with the workpiece, and a contact determination step of determining the contact between the spindle and the workpiece in the first forward-movement step. In the contact determination step, the spindle is determined to be in contact with the workpiece when a change in a position of the spindle detected by the displacement detector unit in the first forward-movement step becomes equal to or less than a predetermined contact determination threshold.

公开(公告)号：US20250052558A1

公开(公告)日：2025-02-13

申请号：US18796679

申请日：2024-08-07

Applicant: MITUTOYO CORPORATION

Inventor： Keita OGAWA ,  Hirokazu KOBAYASHI

IPC: G01B7/30 ,  G01D5/20

Abstract: There is provided a displacement measuring apparatus capable of reducing power consumption in a sleep mode. An operation mode of a signal processing unit includes a measurement operation execution mode to calculate a displacement or position as a measurement value using a sensor signal from a displacement sensor, and a sleep mode to reduce power consumption compared to the measurement operation execution mode. In the sleep mode, the signal processing unit performs a substitute calculation process at a predetermined sampling frequency to calculate a substitute value related to the displacement or position using fewer sensor signals than in the measurement operation execution mode. The operation-mode control unit assumes that a variation of the displacement sensor has been detected when there is a variation in the substitute value, cancels the sleep mode, and switches the signal processing unit to the measurement operation execution mode.

公开(公告)号：US20240328767A1

公开(公告)日：2024-10-03

申请号：US18591243

申请日：2024-02-29

Applicant: MITUTOYO CORPORATION

Inventor： Keita OGAWA ,  Shuji HAYASHIDA ,  Yasuhiro TSUJIMOTO

IPC: G01B3/00 ,  G01B3/24

CPC classification number: G01B3/008 ,  G01B3/24

Abstract: A displacement measuring instrument includes an encoder that detects the amount of moving displacement of a measuring element while the measuring element is in contact with the surface of an object to be measured, a calculator that calculates a measurement value, and a display that displays at least the measurement value. The calculator includes a measuring section that calculates the measurement value from the amount of moving displacement and displays the measurement value on the display, a speed acquiring section that acquires the speed of the measuring element, an approach analyzing section that analyzes and determines whether the approach of the measuring element to the object to be measured is appropriate or inappropriate, and a warning section that issues a warning when the approach analyzing section determines that the approach of the measuring element to the object to be measured is inappropriate.

公开(公告)号：US20230304785A1

公开(公告)日：2023-09-28

申请号：US18124942

申请日：2023-03-22

Applicant: MITUTOYO CORPORATION

Inventor： Keita OGAWA ,  Masashi YAMAJI ,  Yuhei TAKATSU ,  Chihiro YAMAMOTO

IPC: G01B7/13 ,  G01B7/016

CPC classification number: G01B7/13 ,  G01B7/016

Abstract: There is provided an inside-diameter measuring unit capable of automating inside-diameter measurement and a control method for automatic inside-diameter measurement. An inside-diameter measuring part is supported by a support frame part via a floating joint part. The floating joint part includes a rotation-allowing mechanism part and a translation-allowing mechanism part. A measuring head part of the inside-diameter measuring part is inserted into a hole by a robot arm part. The inside-diameter measuring part adjusts its position and posture autonomously by the reaction force when a contact point pushes against the inner wall of the hole to align the axis of the inside-diameter measuring part with the axis of the hole. An electric inside-diameter measuring unit can automatically measure the inside diameter of a hole.