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    • 4. 发明申请
    • Apparatus and method for the noncircular bending of tubes
    • 管的非圆形弯曲的装置和方法
    • US20050145002A1
    • 2005-07-07
    • US11069173
    • 2005-03-01
    • David FieldCharles Wampler
    • David FieldCharles Wampler
    • B21C1/22B21C1/24B21C3/00B21D7/04
    • B21C1/22B21C1/24B21C3/00
    • A tube bending apparatus adapted for the noncircular bending of a tube includes a modified bend die, a modified wiper die, a translatable and pivotable element and an actuator. The bend die presents a noncircular bending profile having a linearly or nonlinearly increasing radius of curvature. The wiper die is configured to accommodate the maximum radius presented by the profile, and the element and actuator present an inclined rack and pinion configuration. The bend die presents an involute of a circle having a radius equal to the product of the radius of the pinion and the sine of the angle of inclination, so that the bend die engages the tube at a fixed point in space during bending.
    • 适于管的非圆形弯曲的管弯曲装置包括改进的弯曲模具,修改的刮水器模具,可平移和可枢转的元件和致动器。 弯曲模具呈现出具有线性或非线性增加的曲率半径的非圆形弯曲轮廓。 刮水器模具被配置为适应轮廓所呈现的最大半径,并且元件和致动器呈现倾斜的齿条和小齿轮配置。 弯曲模具具有圆弧的渐开线,其具有等于小齿轮的半径和倾斜角的正弦的乘积的半径,使得弯曲模具在弯曲期间在空间中的固定点处与管接合。