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    • 5. 发明专利
    • Manufacture of crank shaft
    • 起重机制造
    • JPS5945046A
    • 1984-03-13
    • JP15618582
    • 1982-09-08
    • Kubota Ltd
    • ISAKI HIROSHIYOSHINO SHIYOUICHI
    • B21D53/86B23P15/00B23P17/00
    • B23P15/00B23P2700/07
    • PURPOSE:To simplify the device and to reduce the time necessary for working by finish-working a crank shaft while giving a compression residual stress beforehand to the fillet part of the crank pin. CONSTITUTION:A journal 2, a cast blank material of a crank shaft, is rough-cut to a rough-cut face. A crank pin 4 is rough-cut to a rough-cut face, and the fillet parts 4a, 4b of the crank pin are finish-cut to a finishing face. Another end 2b of the journal 2 is pulled, and a bending moment M1 that generates a tensile stress on the axis side of the journal 2 of the crank pin 4 is given to the crank pin 4, and the tensile stress is concentrated to the fillet part 4a of the crank of journal 2 axis side. When a tensile load P1 is removed when a parallel part 4c of the crank pin is within the limit of elasticity and plastic deformation is caused in the fillet part 4a of the crank pin of axis center side, the residual stress remains in the fillet part 4a. Then, the journal 2 and the parallel part 4c of the crank pin 4 are finish-worked to the finishing face.
    • 目的:为了简化设备,并通过精磨曲柄轴减少工作所需的时间,同时预先将压缩残余应力提供给曲柄销的圆角部分。 规定:轴颈2是曲轴的铸造坯料,粗切切割成粗切面。 将曲柄销4粗切割成粗切面,将曲柄销的圆角部4a,4b精加工成精加工面。 拉出轴颈2的另一端2b,在曲柄销4的轴颈2的轴线侧产生拉伸应力的弯曲力矩M1被赋予曲柄销4,拉伸应力集中在圆角 轴颈2轴曲柄的部分4a。 当曲柄销的平行部分4c在弹性极限内并且在轴心中心侧的曲柄销的圆角部分4a中引起塑性变形时,拉伸载荷P1被去除时,残余应力残留在圆角部分4a中 。 然后,曲柄销4的轴颈2和平行部分4c对精加工面进行精加工。
    • 9. 发明专利
    • Method and device for determining center hole of crankshaft
    • 用于确定起重机中心孔的方法和装置
    • JP2010031987A
    • 2010-02-12
    • JP2008195807
    • 2008-07-30
    • Komatsu Machinery Corpコマツ工機株式会社
    • YOSHIMOTO AKIHIRO
    • F16C3/08G05B19/4097
    • F16C3/08B23P2700/07G01M1/10G01M1/24G05B19/401G05B19/4097G05B2219/32189G05B2219/37205Y02P90/22Y02P90/265
    • PROBLEM TO BE SOLVED: To easily and properly determine a position of a center hole of a crankshaft. SOLUTION: A center hole determination method determines the center hole of a material crankshaft formed by molding with a cope and a drag, and includes first to fourth steps. In the first step, shape data of each part molded with the cope and drag is obtained. In the second step, measurement data of each part is compared with the corresponding design data to calculate a mismatch amount caused by mismatch of each part. In the third step, based on the mismatch amount, the data corresponding to the mismatch amount is interpolated to reproduce actual shape data. In the fourth step, a center hole is determined so that a rotation balance of the material crankshaft is within a predetermined range based on the actual shape data. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了容易且适当地确定曲轴的中心孔的位置。 解决方案:中心孔确定方法确定通过用上模和拖曳成型形成的曲轴形成的曲轴的中心孔,并且包括第一至第四步骤。 在第一步骤中,获得用上模和拖曳模制的每个部件的形状数据。 在第二步中,将每个部分的测量数据与对应的设计数据进行比较,以计算由每个部分的不匹配引起的失配量。 在第三步骤中,基于不匹配量,对与失配量对应的数据进行内插以再现实际形状数据。 在第四步骤中,基于实际形状数据确定曲轴坯料的旋转平衡在预定范围内的中心孔。 版权所有(C)2010,JPO&INPIT