Carapace of plastic mould back is in shaping is how to control precision in the process

The precision of the mould, in the mould the tool that make satisfies precision to ask to fall, patternmaking master is the pattern that can make contented design ask, so the key depends on a mould designing. Mould design and follow-up Injection Molding significance are great also! 1, the material of the mould is chosen character, this basically is concerned with product output, general generous should pick fine steel capable person, additional even want mechanical function to strengthen processing, quench for instance etc! If the mould wears away, precision nature is unwarrantable! 2, the mould irrigates the design that builds a system, the opportunity that note model has pressure speed upper limit, fall in high-pressured high speed commonly, the machine that note model is easy not stable, so the ox forces irrigate building a system should be plastic can fill mould cavity extremely easily. With individual experience, the most difficult is to select the site that enter glue. If had selected the site that enter glue, other with respect to easy to handle much! 3, the choice of washing shrinkage, plastic heat bilges cold shrink, after noting model to shoot glue, plastic contracting, so the dimension of plastic product is less than mould dimension for certain, so mould dimension is to be made bigger than product measure! Mostly little? This basically depends on plastic washing shrinkage, washing shrinkage is big, mould dimension is about bigger! According to experimental data, we had had all sorts of plastic washing shrinkage range, mould stylist can consult this data will devise mould measure. Specific take the experience that more or less is about to see stylist and ability, in light of the experience with my individual, take intermediate cost commonly, bao Bi is taken small, thick arm is taken big, take nearly from the dot that enter glue small (pressure big) , leave the dot that enter glue far to take big (pressure small) , radial is taken small, transverse take big! Washing shrinkage is obtained more accurate, exceed the product that gets easily satisfaction dimension asking. The design of the mould needs experience very much, I feel plastic to note model to lacking the talented person that knows the craft that note model to know a mould to design again namely! Register model share: Noting model also is the part that is despised, the compensation that goes seeing personnel of the technology that note model knew! 1, right technology is premise, the mould is done had not been over, only correct craft ability shapes well and truly dimension, here not dilatancy, 100 technician have 100 different technology parameter! 2, batch production must assure the stability of precision, make sure fine is tasted rate, ask to produce 5 element to want to be stabilized as far as possible again so! Person, machine, makings, law, annulus, be to produce 5 essential, want to assure Ok of lot size precision, stability of factor of production is must, but should accomplish can not allow easy! CNC Milling