Problems needing attention in making molds

2022-10-19
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Problems needing attention in making molds

first, when developing products or trial production of new products, some users often only focus on product development and development at the initial stage, ignoring communication with mold manufacturers. After the preliminary determination of the product design scheme, i.e. contacting the mold manufacturer in advance has two advantages:

(I) it can ensure that the designed product has a good forming process and will not modify the finalized design because the parts are difficult to process

(II). The mold manufacturer can make design preparations in advance to prevent careless consideration in a hurry from affecting the construction period

in a word, only with the close cooperation between the supplier and the demander can we finally reduce the cost and shorten the cycle of making high-quality molds

second, don't just look at the price, but consider the quality, cycle and service in an all-round way.

there are many kinds of molds, which can be roughly divided into ten categories. According to the different requirements of part materials, physical and chemical properties, mechanical strength, dimensional accuracy, surface finish, service life, economy and so on, different types of dies are selected for forming

high precision molds need to be processed by high-precision CNC machine tools, and the mold material and forming process are strict. 4 Background parameters of friction and wear testing machine: the background parameters of the manufacturer are set when leaving the factory, and cad/cae/cam mold technology is also needed to design and analyze. Some parts have special requirements during molding, and the mold also needs to use hot runner. Gas assisted Vickers hardness test is mainly used for material research and scientific experiments. Low load Vickers hardness test is mainly used to test the hardness molding of small precision parts. The manufacturer should have CNC, EDM, wire cutting machine tools and CNC profiling milling equipment, high-precision grinding machines, high-precision three coordinate measuring instruments, computer design and related software. Generally, large stamping dies (such as auto cover dies) should consider whether the machine tool has a blank holder mechanism, even edge lubricant, multi-functional bit progression, etc. In addition to stamping tonnage, punching times, feeding devices, machine tools and die protection devices should also be considered

the manufacturing methods and processes of the above molds are not owned and mastered by every enterprise. When choosing a cooperative manufacturer, we must understand its processing ability. We should not only look at the hardware equipment, but also combine the management level, processing experience and technical strength. For the same set of molds, there is sometimes a big gap between the quotations of different manufacturers. You should not pay more than the mold value, nor less than the mold cost. Mold manufacturers, like you, should make reasonable profits in their business. Ordering a set of moulds with a much lower quotation will be the beginning of trouble. Users must start from their own requirements and measure comprehensively. A much lower mold would be the beginning of trouble. Users must start from their own requirements and measure comprehensively

third, avoid multi head cooperation, and try to integrate mold making and product processing

with qualified molds (test elasticity, stiffness and other index data pieces are qualified), batch qualified products may not be produced. This is mainly related to the selection of machining machine tools, forming process (forming temperature, forming time, etc.) and the technical quality of operators. It can realize accurate arbitrary waveform control. With a good mold, it is also necessary to have good forming processing. It is best to cooperate in a one-stop process and try to avoid multi head cooperation. If the conditions are not met, it is necessary to choose one party to be fully responsible, and it must be clear at the same time of the contract

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