The axes of the upper and lower forming rollers are not parallel, the forming roller deviates from the forming center line, the uneven roller gap of the forming roller hole type, and the improper adjustment of the vertical roller will cause the unsymmetrical steel to produce a skewed twist. The method of eliminating the skew twisting is to adjust with a backing plate. The horizontality of the lower forming roller is such that the hole shape of the lower forming roller is aligned with the forming centerline, and then the position of the following forming roller is used as a reference to adjust the pressing mechanism so that the axes of the upper and lower forming roller axes are parallel to each other and the nip of the upper and lower forming rollers is Uniform.
Power Hand Tools
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