Tooling Design Mould Design Mould Structure

For big products or parts which need high precision press, it is necessary to do intensity calculation, in order to prevent flash or damage due to less strength or large deformation. To calculate simple shape mold chambers, we can refer to plastic molds design. For complex chambers, we can use finite element or professional software to analyze it. In order to ensure the precision of parts, mold design need to pay attention to the following facts:

1, Rational design the mold amplification coefficient. In the premise of successful forming, minimize the volume of binder.

2, Rational mold structure. Precision parts need a certain intensity, easy replacement and rational tolerance. Forming blank holes need positive tolerance while blank axis need negative tolerance. Parts technology structure must be proper to ensure machining precision.

3, Rational sprue form and position.

4, Rational push-out. Make the thimble uniform and smooth and deduct the deformation.

5, Molds need with temperature adjustment system. Ensure uniform filling and cold-down. Deduct the density heterogeneity.

6, Rationally choose chamber quantity and lay out. Use uniform symmetry lay out to ensure balance filling. For high precision parts, we had better deduct the chamber quantity.

7, Rational gap. Avoid trimming and spurs.