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US 5,609,450 AGranted
Method and apparatus for broaching opening in a plate
AssigneeFramatome
InventorsDaniel Beraudier, Jean-Yves Douheret
Life of this patent
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AssigneeFramatome
InventorsDaniel Beraudier, Jean-Yves Douheret
Estimating the term…
The plant comprises two broaching lines with successive actions, each comprising a traction device and an accompanying device which have axes of travel that are aligned along a common work axis. The work axes of the two broaching lines are separated by a distance at least equal to the diameter of the plate. The two traction devices and the two accompanying devices are arranged on the same side of the plate to be broached. The plate is moved on its support between a first broaching position in a first broaching line and a second broaching position in the second broaching line. The broaching on the first broaching line and the return of the traction and accompanying devices and of the broach to an initial arrangement, on the second broaching line, are performed simultaneously.
A plant for broaching passage openings in a plate by passing a profiled broach successively through each hole of an array of rough-drilled holes passing through the plate, said plant comprising
The plant according to claim 2, wherein said plate to be broached is a plate of circular shape arranged in a vertical position on a support fitted movably through an intermediary of means for rolling on a horizontal rail and comprising vertical columns to which are secured slides for guiding a trolley to which said plate is secured.
The plant according to claim 3, wherein said plate to be broached is secured to said trolley by means of securing shafts and retaining cleats fitting into coinciding openings consisting of said rough-drilled holes in said plate and openings in said trolley.
The plant according to claim 12, wherein each of the traction devices comprises a unit fitted movably on a first slide secured to a support in the direction of the axis of a broaching line and comprising a traction jack and a second slide in axial direction as well as a block for bearing on one face of said plate to be broached, a rod of said traction jack being integrally attached to a traction head fitted movably on said second slide and comprising means for locking the end of a broach.
A process for broaching passage openings in a plate by passing a profiled broach successively through each hole of an array of rough-drilled holes passing through said plate, said process being carried out by means of a plant comprising
Dependencies are inferred from the claim text.