Precision Progressive Die Lower Plate

As the core guiding and positioning reference for progressive stamping dies, this lower plate integrates mounting slots for multiple irregular inserts, guide pillar holes, and stripper pin channels. The stepped counterbores and precision fit grooves distributed across its surface ensure accurate alignment of the upper die assembly during high-speed reciprocating motion. It provides a stable support platform for blanking or forming processes, directly determining the dimensional stability of the final stamped parts.

The key to manufacturing such multi-hole templates with complex internal cavity structures lies in controlling the positional tolerance between installation holes and the flatness of the cavity surfaces to prevent interference or poor fit during assembly. For the asymmetrical irregular slots and tiny pin holes on the plate, high-precision slow wire EDM is used for contour shaping, combined with optical grinding processes to ensure the flatness and perpendicularity of the end faces. This effectively eliminates machining stress and extends mold service life.

Supported by dual IATF16949 and ISO9001 certification systems, our production line is equipped with slow wire EDM machines from brands like Sodick and Western, as well as Wangpan surface grinders. We can process high-hardness materials such as tool steel, alloy steel, and cemented carbide. Key mating dimensions are fully inspected using Mitutoyo vision measuring systems and Hexagon CMMs to ensure consistency between batches. Quotations are evaluated based on specific 2D/3D drawings, material grades, heat treatment hardness, and expected order volumes.