Apparatus for spin-forming wheel rims
AssigneeMotor Wheel Corporation
InventorJohn H. Golata
Life of this patent
Estimating the term…
Abstract
In an apparatus for spin-forming a drop-center wheel rim which includes axially reciprocable head and tail stock sections, a centrifugally actuated clamp is mounted on the tail stock section and is adapted to engage an internal groove in the head stock section as the sections are conjointly rotated to prevent axial movement therebetween during the high-speed spin-forming operation.
Claims9
An apparatus for spin-forming wheel rims and including rotatable head and tail stock sections axially reciprocable with respect to each other between open and closed positions, die means carried by said head and tail stock sections and adapted in said closed position of said sections to define a selected wheel rim contour, and forming means disposed externally of said head and tail stock sections and adapted to cooperate with said die means for forming a wheel rim of said contour during rotation of said sections, the improvement comprising locking means carried by one of said head and tail stock sections and responsive to centrifugal forces generated during corotation of said sections to lock said one section to the other of said sections in said closed position.
Apparatus for spin-forming metal drop-center wheel rims for tubeless tires comprising rotatable head and tail stock sections reciprocable in the direction of the axis of rotation between a closed position and an open position in which said section are separated by a distance sufficient to permit a rim blank to be located between said sections, first and second die means respectively carried by said head and tail stock sections and adapted in said closed position conjointly to define a selected wheel rim contour, said first and second die means respectively defining opposing side walls of a wheel drop-center, forming means disposed externally of said head and tail stock sections and adapted to reciprocate axially for forming a wheel rim over the contour of said first and second die means during high-speed corotation said head and tail stock section such that forces are developed by the conjointly action of said forming means on a rim blank and centrifugal forces on said rim blank which tend axially to separate said head and tail stock sections, and locking means responsive to rotation of said head and tail stock sections for locking said sections together against said separating forces.
Dependencies are inferred from the claim text.