The roll forming device inputs the rotating drive force to the forming roll (2) from rotating force transmitting means (1).

该辊成形装置从旋转力传递机构（1）向成形辊（2）输入旋转驱动力。

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The rotating force transmitting means (1) has input-side engaging means (3) on the side where it extends toward the forming roll (2).

上述旋转力传递机构(1)在朝向上述成形辊(2)延伸的前端侧具有输入侧卡合机构(3)。

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The roll-side engaging means (4) and the input-side engaging means (3) are engaged to input the rotating drive force from the rotating force transmitting means (1) to the forming roll (2).

借助上述辊侧卡合机构(4)与输入侧卡合机构(3)的卡合，从上述旋转力传递机构(1)向上述成形辊(2)输入旋转驱动力。

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Steel is stretched and shrunk using planishing hammers, jig mills and Yoder roll-forming machines.

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