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    • 7. 发明授权
    • Forming method and forming device
    • 成型方法及成型装置
    • US09192972B2
    • 2015-11-24
    • US13879944
    • 2011-02-24
    • Feizhou WangTomoyasu NakanoAkinori InokumaJilong YinTerutomo Akai
    • Feizhou WangTomoyasu NakanoAkinori InokumaJilong YinTerutomo Akai
    • B21D7/08B21D5/12
    • B21D7/08B21D5/004B21D5/10B21D5/12
    • An object of the present invention is to provide a forming method and a forming machine in which in forming e.g., a round steel pipe, predetermined forming can be performed with less additional deformation imparted to a workpiece without deteriorating the productivity of the conventional roll forming, thereby manufacturing a high-quality product with high dimension precision. To achieve this object, the present invention provides a forming method and a forming machine, which adopt a rotating unit which rotatably moves on an endless track a die train having dies with outwardly directed and swingable forming passes in a breakdown step at an early forming stage, and in which the forming pass of each die holds the edge of the workpiece to rotatably move the die by changing the die to a predetermined angle, thereby realizing bending, so that problems due to twisting onto forming rolls and high locally-caused contact stress can be greatly reduced.
    • 本发明的目的是提供一种成形方法和成形机,其中在形成例如圆钢管时,可以以较少的附加变形进行预定的成形,而不会降低常规辊成型的生产率, 从而制造出高精度的高质量产品。 为了实现该目的,本发明提供一种成形方法和成形机,其采用旋转单元,该旋转单元在早期成形阶段的击穿步骤中可旋转地在环形轨道上移动具有具有向外和可摆动的成形道的模具的模具列 ,并且其中每个模具的成形通过将工件的边缘保持在工件的边缘以通过将模具改变为预定角度来可旋转地移动模具,从而实现弯曲,从而导致由于在成形辊上的扭转和局部引起的接触应力的问题 可以大大减少。
    • 9. 发明申请
    • MACHINE OF VARIABLE LINEAR STRUCTURE FOR THE FORMATION OF TUBES
    • 用于形成管的可变线性结构的机器
    • US20120160006A1
    • 2012-06-28
    • US12979742
    • 2010-12-28
    • Vittorio TRAVINIRiccardo BOSONI
    • Vittorio TRAVINIRiccardo BOSONI
    • B21D5/12
    • B21D5/12B21C37/08
    • The machine for the formation of tubes includes at least, in series with each other, forming stations including pairs of idle rollers which make rototranslational movements of the same amplitude but in opposite directions, and at least one finishing station including four idle rollers having a concave profile with a constant curvature and able to perform rototranslational movements of the same amplitude and direction according to 90° axes. The lower rollers of each forming station have an elliptical profile with a curvature decreasing form the outer edge to the inner edge of the roller. The upper rollers of the first forming station have an elliptical profile with a curvature increasing from the outer edge to the inner edge of the roller; the upper rollers of the forming stations subsequent to the first have a circular profile.
    • 用于形成管的机器至少包括彼此串联的成型站,包括成对的空转辊,其进行相同幅度但相反方向的旋转运动,以及至少一个精加工站,包括四个惰性辊,其具有凹陷 轮廓具有恒定的曲率,能够根据90°的轴进行相同幅度和方向的旋转运动。 每个成型站的下辊具有椭圆形轮廓,曲率从形成辊的内边缘的外边缘减小。 第一成形台的上辊具有从辊的外缘到内边缘的曲率增加的椭圆形轮廓; 第一个后面的成形站的上辊具有圆形轮廓。