What is a mold? Mold is the core production tool, and a good mold is an important guarantee for subsequent production; how is the mold made? Is it difficult to make molds? Although mold manufacturing belongs to the category of mechanical manufacturing, due to the characteristics and production nature of molds, it is difficult to make mold parts in traditional machining.
The mold is a forming tool, so the hardness of the mold material is higher than that of the parts. For example, the formed parts of cold stamping dies are generally made of hardened tools or cemented carbide, so they are difficult to manufacture by traditional cutting methods.
The processing quality of the mold mainly includes dimensional accuracy, shape accuracy, position accuracy (collectively referred to as machining accuracy), surface roughness, etc. The machining accuracy of the mold is determined by the requirements of the parts and mold structure. Generally speaking, the accuracy of the working part of the mold is 2~4 grades higher than that of the parts, and the manufacturing tolerance is controlled within ±0.01mm, and some even need to be within the micrometer range; the machining surface of the mold is not allowed to have defects, and the working surface roughness is less than 0.8&mum.
Generally speaking, only 1~2 pairs of molds are needed to produce a part, and even hammer forging molds are produced in small batches, so molds are generally produced in a single piece, and most of them are processed by traditional methods. The production cycle is long and the investment cost of equipment and tools is high.
Post time: Apr-23-2022