Machine for the wave-like deformation of ribs

摘要

1,095,089. Corrugating. COMMISSARIAT A L'ENERGIE ATOMIQUE. Sept. 16, 1966 [Sept. 17, 1965], No. 41562/66. Heading B3E. Apparatus for corrugating previously machined sets of fins on sectors of tubular elements, e.g. sheaths for nuclear fuel elements, comprises a series of blades relatively disposed to form a stack and each blade having one end in the form of a punch of tapered section and whose faces are corrugated, said punch being engageable in the space separating two fins to be corrugated under the action of a member acting on the end of the blades remote from said punch-form ends, said member being displaced parallel to the axis of the series of blades. Previously machined fins 2 of a tubular element 1 are corrugated by tapered blades 9, having their two major surfaces corrugated, driven into the spaces 3 between the fins 2 by a cam 6 moved axially of the element 1. In another embodiment, Fig. 3, (not shown), the blades are driven in and retracted by a cam member moved through, and in engagement with, apertures in the blades. Several such arrangements may be positioned around the tubular element to act simultaneously on fins on different sectors of the element.