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    • 38. 发明授权
    • Apparatus and method of machining article of eccentric configuration
    • 偏心配置加工制品的装置和方法
    • US5396821A
    • 1995-03-14
    • US54755
    • 1993-04-27
    • Takeshi OkumuraKatsuyoshi Kitagawa
    • Takeshi OkumuraKatsuyoshi Kitagawa
    • B23B5/48B23B1/00B23B5/36B23G1/02B23Q1/62G05B19/18B23B41/04B23Q15/02
    • B23B1/00B23B5/36B23Q1/623G05B19/186G05B2219/35157G05B2219/45129G05B2219/45215G05B2219/45216G05B2219/49313G05B2219/49314G05B2219/50216Y10T82/122Y10T82/2502Y10T82/2535
    • An eccentric-shape machining apparatus as well as an eccentric-shape machining method are provided which can efficiently and accurately bore, contour or thread a workpiece about any position other than the rotational center of the workpiece. The workpiece is rotatably driven while controlling the rotational phase of the workpiece. A rotating tool spindle adapted to mount a cutting tool is rotatably driven while controlling the rotational phase of the rotating tool spindle. The rotating tool spindle is mounted on a cutting head which is controllably fed and positioned in Z-axis extending parallel to X-axis perpendicular to the axis of the rotating tool spindle. During one complete revolution of the workpiece, the rotational phases of the main spindle and rotating tool spindle and the movement of the cutting head in the X-axis direction are simultaneously controlled such that the cutting tool is brought into contact with the inner and outer peripheries of the workpiece by a given depth of cut. At the same time, the movement of the cutting head in the Z-axis direction is controlled. As well as the work rotation mode described above, the work oscillation mode can be carried out.
    • 提供了一种偏心形状加工装置以及偏心型加工方法,其可以有效地和精确地对工件围绕除了工件的旋转中心之外的任何位置进行钻孔,轮廓或螺纹加工。 在控制工件的旋转相位的同时,工件被可旋转地驱动。 适于安装切割工具的旋转刀具主轴在控制旋转刀具主轴的旋转相位的同时被可旋转地驱动。 旋转刀具主轴安装在切割头上,切割头可控地进给并定位在平行于旋转刀具主轴轴线的X轴平行的Z轴上。 在工件完成一圈之间,同时控制主轴和旋转工具主轴的旋转相位以及切削头在X轴方向上的移动,使得切削刀具与内周和外周接触 的工件通过给定的切割深度。 同时,控制切割头在Z轴方向的移动。 除了上述工作旋转模式之外,还可以进行工作振荡模式。
    • 39. 发明授权
    • Internal combustion engine siamese port type intake system construction
with internal ridge structure partially separating helical port and
bypass passage
    • 内燃机舷门式进气系统结构,内部脊结构部分分离螺旋口和旁路通道
    • US4748950A
    • 1988-06-07
    • US16193
    • 1987-02-18
    • Takeshi OkumuraTakehisa YaegashiYoshihiro Iwashita
    • Takeshi OkumuraTakehisa YaegashiYoshihiro Iwashita
    • F02B31/00F02B31/02F02B31/08
    • F02B31/085F02B2031/006Y02T10/146
    • A cylinder head for an engine is formed with a first straight intake passage which leads to a first intake port, and with a second helical intake passage which leads to a second intake port and is formed with a helical end vortex portion. A common intake passage leads to the upstream ends of the first and second intake passages. A dividing ridge extends from one side of the inner surface of the cylinder head defining the intake passages towards but not reaching an opposite side of that surface, with a gap being left beween the ridge summit portion and that opposite side. The ridge thus divides the second intake passage into a one side portion remote from the first intake passage and terminating in the helical end vortex portion, and another side portion towards that first intake passage which is a straight bypass passage and is communicated at its downstream end to that helical end vortex portion. The upstream end of the ridge is positioned substantially upstream of the point at which the common intake passage becomes bifurcated into the first and second intake passages. A control valve is fitted in the common intake passage between its wall and this upstream ridge end, so as to control the flow resistance of the first straight intake passage and the straight bypass passage. Optionally, the portion of the control valve on the ridge side of the cylinder head inner surface is substantially upstream of the portion thereof on the opposite side thereof.
    • 用于发动机的气缸盖形成有第一直进入通道,其通向第一进气口,并且具有通向第二进气口并形成有螺旋端涡流部分的第二螺旋进入通道。 常见的进气通道通向第一和第二进气通道的上游端。 分隔脊从限定进气通道的气缸盖的内表面的一侧延伸而不到达该表面的相对侧,在脊顶部和相对侧之间留有间隙。 脊部将第二进气通道分成远离第一进气通道的一侧部分,并且终止于螺旋端涡流部分,另一侧部分朝向作为直的旁通通道的第一进气通道,并在其下游端连通 到该螺旋端涡流部分。 脊的上游端大致位于公共进气通道分叉进入第一和第二进气通道的点的上游。 控制阀安装在其入口通道和上游侧的前端之间,以便控制第一直进入通道和直通旁路通道的流动阻力。 可选地,控制阀在气缸盖内表面的脊侧上的部分基本上在其相对侧的部分的上游。