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Basic principles of bending processing sequence
Bending from inside to outside: Starting from the inside of the workpiece, gradually expand the bending outward, so as to avoid the influence of subsequent bending on the completed bending part.
Jan 12,2026
The basic principles of bending processing sequence mainly include the following points:
Bending from inside to outside: Starting from the inside of the workpiece, gradually expand the bending outward, so as to avoid the influence of subsequent bending on the completed bending part.
Bending from small to large: Starting from small-sized bending, gradually transitioning to large-sized bending, so as to better control the accuracy and stability of bending.
Bend special shapes first, then bend general shapes: For special shapes in the workpiece, such as irregular or complex parts, they should be processed first to reduce the difficulty and error of subsequent bending.
The previous process does not affect or interfere with the subsequent process after forming: Ensure that the bending in the previous step will not hinder or damage the subsequent bending, and ensure the smooth progress of the entire processing process.
Factors affecting the bending processing sequence include:
Upper die arc radius: Different workpieces require upper dies with different radii. Choosing a suitable upper die radius can improve the accuracy and efficiency of bending.
Mechanical properties of materials: The yield point and elastic modulus of the material will affect the size of the springback angle. Choosing the right material can reduce the springback phenomenon.
Relative bending radius r/t: The smaller the deformation, the larger the springback angle. Choosing a small bending radius is conducive to improving accuracy.
Common interference phenomena in bending processing and their solutions:
During the second or multiple bending process, the workpiece may collide with the tool, resulting in the inability to bend or deformation. To avoid this situation, it is necessary to plan the bending sequence reasonably and reserve enough space to ensure that each bending will not interfere with the previous bending part.
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