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公开(公告)号：US11353312B2
公开(公告)日：2022-06-07
申请号：US17009304
申请日：2020-09-01
Applicant: MITUTOYO CORPORATION
Inventor： Naoki Izumi
Abstract: There is provided a roughness tester that improves measurement efficiency and roughness measurement accuracy.
A roughness tester includes a stylus unit including a stylus that is provided in such a manner as to protrude from and retract into a through hole of a skid and performs scanning movement along a surface of a workpiece, and a stylus displacement detecting unit that detects displacement of the stylus, and a drive unit that moves the stylus unit forward and backward in a drive-axis direction. The roughness tester further includes a height detector that is provided in such a manner as to face a front end face of the main-body housing part, interposing the skid between the height detector and the front end face and that detects a height of an object in a direction parallel with a measurement axis. When the height detector detects the object at the same height of the height of the main-body support foot in the measurement axis direction, the drive unit automatically starts driving in order for the stylus unit to perform scanning measurement of the surface of the workpiece.-
Patent Agency Ranking
公开(公告)号：US11156537B2
公开(公告)日：2021-10-26
申请号：US16587213
申请日：2019-09-30
Applicant: MITUTOYO CORPORATION
Inventor： Masaru Kawazoe , Naoki Izumi
Abstract: A controller of a hardness tester can determine, in a condition where a driver is not in operation and when a spring displacement detector and an arm displacement detector detect an amount of displacement of respective objects (plate spring and loading arm), that a loading arm and a plate spring are deformed according to changes in environmental temperature. A favorable hardness test can be performed by the hardness tester corresponding to the environmental temperature according to the determination by carrying out an initialization process that resets the displacement amount of respective object to zero, the displacement amount detected by the spring displacement detector and the arm displacement detector respectively.
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公开(公告)号：US09441715B2
公开(公告)日：2016-09-13
申请号：US14487380
申请日：2014-09-16
Applicant: MITUTOYO CORPORATION
Inventor： Youhei Onodera , Hideki Shindo , Naoki Izumi
CPC classification number: F16H25/12 , F16D13/10 , F16H19/025 , G01B5/0002 , G01B5/0004 , G01B5/20 , Y10T74/18696
Abstract: A traction nut has twist rollers pivotally supported so as to be rotatable in a state of defining an inclination angle with respect to an axis of a drive shaft, the inclination angle being equivalent to a lead angle; an open/close lever provided to switch between a friction-contact state and a disengaged state of the traction nut relative to the drive shaft; and a spring generating a biasing force such that the traction nut is brought into friction-contact with the drive shaft. In response to user operation, the open/close lever puts the traction nut in the disengaged state against the biasing force of the spring. When the user releases the open/close lever, the traction nut returns to the friction-contact state due to the biasing force of the spring.
Abstract translation: 牵引螺母具有可旋转地支撑的扭转辊，以便能够相对于驱动轴的轴线限定倾斜角度的状态旋转，该倾斜角度等于导程角; 一个打开/关闭杆，用于在摩擦接触状态和牵引螺母相对于驱动轴的脱离状态之间切换; 以及产生偏压力的弹簧，使得牵引螺母与驱动轴摩擦接触。 响应于用户操作，打开/关闭杆克服弹簧的偏置力使牵引螺母处于分离状态。 当用户释放打开/关闭杆时，牵引螺母由于弹簧的偏置力而返回到摩擦接触状态。
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公开(公告)号：US20160097635A1
公开(公告)日：2016-04-07
申请号：US14871564
申请日：2015-09-30
Applicant: Mitutoyo Corporation
Inventor： Kotaro Hirano , Naoki Izumi , Hideki Shindo
IPC: G01B11/24
CPC classification number: G01B11/24 , G01B21/047 , G01B2210/50
Abstract: A positioning unit includes two or more the laser light sources disposed around a point sensor. Laser light beams from the two or more the laser light sources intersect at an adjustment point separated from a detection point, which is away from the point sensor, by a predetermined distance. The adjustment point is positioned on a desired measurement start point on a work, the point sensor is moved close to the work by the predetermined distance, and a measurement scan of the work is started.
Abstract translation: 定位单元包括设置在点传感器周围的两个或更多个激光光源。 来自两个或更多个激光源的激光束在距离点传感器的检测点分离预定距离的调整点相交。 调整点位于工件上所需的测量起始点上，点传感器靠近工件移动预定距离，开始测量扫描。
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公开(公告)号：US20210072015A1
公开(公告)日：2021-03-11
申请号：US17009304
申请日：2020-09-01
Applicant: MITUTOYO CORPORATION
Inventor： Naoki Izumi
Abstract: There is provided a roughness tester that improves measurement efficiency and roughness measurement accuracy.
A roughness tester includes a stylus unit including a stylus that is provided in such a manner as to protrude from and retract into a through hole of a skid and performs scanning movement along a surface of a workpiece, and a stylus displacement detecting unit that detects displacement of the stylus, and a drive unit that moves the stylus unit forward and backward in a drive-axis direction. The roughness tester further includes a height detector that is provided in such a manner as to face a front end face of the main-body housing part, interposing the skid between the height detector and the front end face and that detects a height of an object in a direction parallel with a measurement axis. When the height detector detects the object at the same height of the height of the main-body support foot in the measurement axis direction, the drive unit automatically starts driving in order for the stylus unit to perform scanning measurement of the surface of the workpiece.-
公开(公告)号：US09644950B2
公开(公告)日：2017-05-09
申请号：US14871564
申请日：2015-09-30
Applicant: Mitutoyo Corporation
Inventor： Kotaro Hirano , Naoki Izumi , Hideki Shindo
CPC classification number: G01B11/24 , G01B21/047 , G01B2210/50
Abstract: A positioning unit includes two or more the laser light sources disposed around a point sensor. Laser light beams from the two or more the laser light sources intersect at an adjustment point separated from a detection point, which is away from the point sensor, by a predetermined distance. The adjustment point is positioned on a desired measurement start point on a work, the point sensor is moved close to the work by the predetermined distance, and a measurement scan of the work is started.
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