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    • 3. 发明授权
    • Method of measuring shape of object in non-contacting manner
    • 以非接触方式测量物体形状的方法
    • US4721388A
    • 1988-01-26
    • US784501
    • 1985-10-04
    • Yusuke TakagiYoshio KojimaKazuo MorigutiTsunehiko Takakusagi
    • Yusuke TakagiYoshio KojimaKazuo MorigutiTsunehiko Takakusagi
    • G01B11/24G01B11/00G01B11/03
    • G01B11/005
    • This invention relates to a method of measuring the shape of an object in a non-contacting manner. The method comprises the steps of providing reference points on the object, the coordinates of which are known in an object coordinate system for expressing the shape of the object; applying a light spot on the reference points while moving a light spot detecting sensor to determine the coordinate values in a measuring coordinate system; determining the relative positional relation between the two coordinate systems by using coordinate values thus determined and the coordinate values in the object coordinate system; measuring points on the object to measure the shape of the object; and comparing the coordinate values, relating to shape of the object and determined in the measuring coordinate system, with reference values which are design values modulated with the relative positional value and converted into coordinate values in the measuring coordinate system in an arithmetic control unit, whereby a manufacturing error of said object is measured.
    • 本发明涉及以非接触方式测量物体的形状的方法。 该方法包括以下步骤:在物体上提供参考点,其坐标在对象坐标系中已知,用于表示物体的形状; 在移动光点检测传感器的同时在参考点上施加光斑以确定测量坐标系中的坐标值; 通过使用如此确定的坐标值和对象坐标系中的坐标值来确定两个坐标系之间的相对位置关系; 物体上的测量点来测量物体的形状; 并且将与测量坐标系中确定的物体的形状相关的坐标值与作为在相对位置值调制的设计值的参考值进行比较,并将其转换为算术控制单元中的测量坐标系中的坐标值,由此 测量所述物体的制造误差。
    • 6. 发明授权
    • Variable valve timing mechanism for internal combustion engine
    • 内燃机可变气门正时机构
    • US07685979B2
    • 2010-03-30
    • US11861580
    • 2007-09-26
    • Yuuzou AkasakaYusuke Takagi
    • Yuuzou AkasakaYusuke Takagi
    • F01L1/34
    • F01L13/0026F01L13/0021F01L2001/0476F01L2013/0073F01L2820/032
    • A variable valve timing mechanism comprises a drive shaft including a rocker arm, a control shaft, a stopper, a first spring member and a second spring member. The rocker arm opens and closes at least one of an intake/exhaust valve in response to rotation of the drive shaft. The control shaft changes a position of the rocker arm to continuously change valve lift characteristics of the intake/exhaust valve in response to rotation of the control shaft by driving a control shaft actuator. The stopper regulates an operating range of rotation of the control shaft between upper and lower limits. The first and second spring members urge the control shaft towards the upper and lower limits, respectively. The first and second spring members return the control shaft to a balance position between the upper limit position and the lower limit position when the internal combustion engine stops.
    • 可变气门正时机构包括:驱动轴,包括摇臂,控制轴,止动件,第一弹簧构件和第二弹簧构件。 响应于驱动轴的旋转,摇臂打开和关闭进/排气门中的至少一个。 控制轴通过驱动控制轴致动器来改变摇臂的位置,以响应于控制轴的旋转而连续地改变进/排气门的气门升程特性。 止动器调节控制轴在上限和下限之间的旋转操作范围。 第一和第二弹簧构件分别促使控制轴朝向上限和下限。 当内燃机停止时,第一和第二弹簧构件将控制轴返回到上限位置和下限位置之间的平衡位置。