| 摘要 |
PURPOSE:To simultaneously form two formed products by cutting them from a weakened groove by putting a heated work between the dies for form rolling of a cross roll forming machine and after making it two pieces of the right and left formed products having the weakened groove for cutting by moving it in parallel between both dies giving a difference to the number of rotations of both working parts. CONSTITUTION:A red heat metal work W is charged between flat dies 4, 4 for rolling at the right and left parts of a cross roll forming machine, a hydraulic cylinder 7 at the left side is worked with its contraction, the right side cylinder 7 is worked with its extension as well, the right and left flat dies 4, 4 are moved in parallel to the position of an alternate long and short dash line and the work W is formed by rolling symmetrically on right and left by pinching the weakened groove 9' for cutting at the rise part 5 for forming of each die 4 by the left side flat die 4 descending with a slide base 3 on a guide plate 2 respectively. After separating it in two formed products 9, 9 by twisting it off at the part of the weakened groove 9' by giving the rotation difference between the forming part 9 of one part and that of the other part, it is received by the cradle 10 provided at the lower end of the right side sliding base 3.
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