MECHANISM AND METHOD FOR FORMING HELICAL SHAPES

摘要

Feed wire 10 is drawn through a plurality of staggered forming rollers 11-19 by rotation of the rollers, while the wire is also being rotated about its own axis so as to form the desired helical shaped production. The roller mechanism includes a support frame and at least four lower fixed position driven rollers 12-18 and at least five 11-19 upper idler rollers having adjustable positions relative to the lower rollers rotably mounted in the frame. The lower rollers usually have a roughened or grooved surface to facilitate drawing the feed wire through the staggered forming rollers. If desired, the feed wire can be pulled off a rotating supply reel by a pair of guiding rollers and then passed through the forming rollers to provide the desired helical shaped product.