In the mold shop column, we will continuously share various topics about molds! (We also publish the mold shop column on our company Instagram.)
In this column, I will introduce the "boat bottom phenomenon"! When you want to punch out terminal shapes like those in the icon diagram, processing them at every pitch, as shown in Figure A, results in a reduced area for holding during the punching process. This can lead to situations where the punch comes down with such force that the stripper plate cannot hold the product securely, causing it to tilt over. This is known as the boat bottom phenomenon. The tilted product resembles a boat bottom, hence the name. To avoid this, changes in layout are necessary. For example, one solution could be to use multiple pitch feeding as shown in Figure B. In the case of multiple pitch feeding, a single group is punched out in one go (all punches come down simultaneously), leaving no room for the product to tip over, thus preventing such issues. However, on the other hand, this will narrow the spacing between the dies, which raises concerns about die strength. It is essential to determine specifications based on strength calculations.
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If you are having trouble with mold design and manufacturing or metal parts processing, please consult Nagumo Manufacturing! Nagumo Manufacturing website: https://nagumo-ss.com/ Instagram: https://instagram.com/nagumo.ss?igshid=YmMyMTA2M2Y=
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Our company specializes in the design and manufacturing of precision press molds and high-precision machining of components. Through our technical expertise and creativity, we provide our customers with trust and satisfaction. As a company that contributes to society and is relied upon by everyone, we engage in work that benefits society through the supply of molds. We will delve into what cannot be done by other companies and what can only be done at Nagumo Manufacturing, focusing on solving our customers' challenges and committing ourselves to the creation of high-precision molds. We will continue to provide our three commitments: "Trust," "Safety," and "Problem-Solving Ability." We will keep delivering work that makes our customers say, "It was the right choice to trust Nagumo Manufacturing."