초록 ▼

A wheel rim forming machine including a fixed frame having four vertically extending columns. Due to the frame structure, the forming force acting at the top and bottom rolls of the machine are borne evenly through tensile forces acting in the four columns. Thus, no bending deformation occurs in the

A wheel rim forming machine including a fixed frame having four vertically extending columns. Due to the frame structure, the forming force acting at the top and bottom rolls of the machine are borne evenly through tensile forces acting in the four columns. Thus, no bending deformation occurs in the columns. Further, because the columns are not exposed to bending forces, they can be formed with a relatively small cross-section and thus the frame structure is compact. Therefore, access to the guide rolls and their support structure is facilitated and high grade adjustment of the guide rolls is possible.

대표청구항 ▼

A wheel rim forming machine comprising: a top roll and a bottom roll for forming a wheel rim by squeezing a wall of said wheel rim therebetween; means operatively coupled to said top roll, for rotatably driving said top roll, said top roll driving means including a horizontally extending top roll sh

A wheel rim forming machine comprising: a top roll and a bottom roll for forming a wheel rim by squeezing a wall of said wheel rim therebetween; means operatively coupled to said top roll, for rotatably driving said top roll, said top roll driving means including a horizontally extending top roll shaft for mounting said top roll and a pair of bearing devices for rotatably supporting said top roll shaft, one of said bearing devices comprising a removable bearing device for enabling exchange of said top roll; a pair of guide rolls for engaging said wheel rim on either circumferential side, respectively, of the squeezed portion of said wheel rim to guide said wheel rim during formation; a pair of guide roll supporting devices coupled to said guide rolls; and a frame comprising a fixed frame including four vertically extending columns and a driven frame adapted to be driven relative to said fixed frame, said top roll and said pair of guide rolls being supported by said driven frame and said bottom roll being supported by said fixed frame, said four vertically extending columns being arranged substantially symmetrically with respect to a vertical axis of said wheel rim forming machine passing through a center of said top roll and said pair of guide rolls being arranged substantially symmetrically with respect to a vertical plane including a rotational axis of said top roll, said four vertically extending columns being spaced from each other over substantially their entire lengths thereof so as to provide, between adjacent columns, spaces through which said top roll driving means and said guide roll supporting devices extend, said removable bearing device is moved while said top roll is exchanged, and a wheel rim is supplied and removed to and from a forming position located in an imaginary rectangle defined by said four vertically extending columns.