lower die V-groove

• How to avoid deviation in bending angle and size

  Feb 06, 2026

  For the bending process, the quality of the bending forming mainly depends on two important parameters: the angle and size of the bending. When bending, in order to ensure the forming size and angle of the bending, attention should be paid to the following aspects. (1) The misalignment of the upper and lower molds can lead to errors in bending dimensions. Before bending, it is necessary to adjust the alignment of the upper and lower mold tools. (2) After the left and right positions of the rear block are moved, the relative position between the sheet metal and the lower mold may change, which may affect the bending size. Before bending, the distance between the rear block positions needs to be re measured. (3) Insufficient parallelism between the workpiece and the lower mold can cause bend...

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