How to choose the mold for a CNC bending machine?

How to choose the mold for a CNC bending machine? We can analyze it from two parts: the upper mold and the lower mold

1. Let's talk about the selection of upper molds for CNC bending machines first

The selection of upper molds should be based on the size of the bending force, and attention should be paid to the load of the molds not exceeding the limit. If users choose special molds, they should pay special attention to the load of these molds being different from normal molds. To correctly select the upper mold of the CNC bending machine, it is necessary to prevent the bending force from exceeding the load limit of the upper mold, which may cause the upper mold to crack and injure people.

The shape of the upper mold of a CNC bending machine has a significant impact on whether the workpiece can be bent into shape. When selecting a mold for programming, it is necessary to consider the shape of the mold and whether there is interference during the workpiece forming process.

When incorporating the mold into the CNC system mold library, it is necessary to program the external dimensions of the mold accurately, so that the CNC system can accurately calculate whether the mold interferes with the workpiece during the automatic bending process.

2. Selection of lower die for CNC bending machine

The width of the V-shaped lower mold must be based on the thickness of the material! Determine according to the following formula, the general formula is:

t<3mmV=(6-8)xt

t≥3mmV=(8~12)xt

The width of V can also be reasonably and scientifically determined based on the changes in the width b of the small bend and the fillet radius r of the bent part.

The bending force generated by the CNC bending machine during the bending process will accumulate on the workbench and also act on the mold. Therefore, it is important to note that the load borne by the mold cannot exceed its limit