Method and apparatus for manufacturing a screw flight

Details Method and apparatus for manufacturing a screw flight Method and apparatus for manufacturing a screw flight

B - Operations, Transporting

23

P

26/158

B23P 15/04 (2006.01) B21D 11/14 (2006.01)

Patent

CA 1234683

ABSTRACT A method and apparatus for manufacturing the screw flight section of a screw conveyor is disclosed. The apparatus includes two horizontal arms which extend from a vertical support and at the terminal end of these arms there are dies for engaging the inner and outer peripheral edges of a flat, sheet metal, annulus-shaped blank with a radial slit. One die is turned on its longitudinal axis while the other remains stationary so that the blank is twisted. After the blank is circumferentially displaced relative to the dies, it is again twisted in the above described manner. This procedure is repeated around the entire circumference of the blank with the result that a helical form is applied to the blank.

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