Design Considerations of Compound Stampings

In the field of hardware manufacturing, compound stampings have become the preferred choice for many manufacturers pursuing high-quality products due to their efficient and precise production characteristics. When designing compound stampings, choosing the right composite stamping die and paying attention to its design details is key to ensuring smooth production and meeting product quality standards. We will delve into several important considerations that cannot be ignored when designing compound stampings.

Intricate Considerations in the Design of Punch Bending Composite Dies

The design of punch bending composite dies is a major challenge in the production of compound stampings. Due to the commonly used large flange coefficient and the slight diameter difference between the punch and bending, the wall thickness of the male and female dies (especially the punch female and bending male dies) becomes particularly critical. When designing such dies, one must fully consider the wall thickness and structural strength of the die, ensuring that the die can withstand continuous stamping operations without being damaged while maintaining efficient production. Particularly for small workpieces, verifying the wall thickness is an indispensable step as it directly relates to the die's lifespan and the final product quality.

Complexity and Applicability of Blank and Bend Composite Dies

Blank and bend composite dies, while capable of completing multiple processes in one stamping operation, have complex structural designs and relatively high manufacturing costs, making their application less common in actual production. However, in certain specific scenarios, blank and bend composite dies can showcase their unique advantages, such as improving production efficiency and reducing process transition time. Therefore, when designing, one should weigh the pros and cons based on the specific needs and production conditions of the product to make a reasonable choice.

Efficiency and Precision of Blank and Draw Composite Dies

Blank and draw composite dies, as a more common type of composite die, are widely welcomed for their efficient and precise production performance. This die usually adopts an inverted lower die structure composed of a drawing male die, blank female die, and edge pressing device. This structural form is not only reasonable but also effectively improves production efficiency. When designing, special attention should be paid to the height difference between the drawing male die and the blank female die, generally making the height of the drawing male die slightly lower than the blank female die by 2-3mm to ensure that the drawing operation can proceed immediately after blanking, achieving seamless connection and efficient production.

Strength and Process Optimization of Draw and Punch Composite Dies

The design of draw and punch composite dies requires special attention to the strength of the die and issues of process optimization. When the diameter of the hole is larger, the wall thickness of the male and female dies will accordingly decrease, increasing the risk of die strength issues. Meanwhile, the arrangement of the ejector device also becomes more complex. To solve these problems, the design should fully consider the structural strength and process sequence of the die, ensuring stable operation during simultaneous drawing and punching. For cylindrical parts with flanges, it is even more necessary to carefully arrange the timing and position of punching to avoid transferring weak deformation zones to the hole's edge, which could become flanging, affecting product quality.

In conclusion, when designing compound stampings, one needs to comprehensively consider multiple aspects from die type selection, structural design, to process optimization. Only by ensuring that each link reaches the best state can high-quality and high-efficiency compound stampings be produced to meet the diverse needs of the market and customers. Yixing Technology will continue to be dedicated to technological innovation and quality improvement, safeguarding your manufacturing journey.