How to Determine Realistic Tolerances for Plastic Injection Molded Parts
The design of a product includes dimensions. Dimensions are required for functionality or correct fit in an assembly. It is impossible to produce identical parts; therefore, the designer defines tolerances for the design dimensions. These tolerances are to ensure that all dimensions fit the assembly requirements. Standards like DIN 16901 (and others) define general tolerances for different materials and different locations on the produced part. However, this is a general recommendation that cannot always be achieved in injection molding. The designer, most of the time, does not take into account the ability to produce the designed part.
Film-insert Injection Compression Molding for Reinforced Polycarbonate with Woven Glass Fiber Oriented 90/0°, ± 45 º
To widen the range of application for plastic materials, new polymer composites with added reinforcing materials on the plastic matrix are being developed increasingly replacing components made of metal or thick-walled plastic parts, most commonly, with short fiber glass reinforcement 1, 2. They provide high levels of strength at extremely low weights and can be manufactured in short cycle times in large industrial quantities. Being materials reinforced with short fiber (0.2 to 0.4 mm in length, and larger fibers with lengths greater than 1mm) are affected the mechanical properties, strength, stiffness, and impact with no location of failure caused by anisotropic material due to the non-uniform fiber orientation distribution. Download Full Article>
Non-matching Mesh Technology Now Supports Complete Mold
The evolution of plastics molding simulation technology began from the plastics filling simulation, and then extended to runner, gate and cooling system simulation. Next, the effects of inserts and even… Download Full Article>
