By Robert Schmitt, Peter Becker (auth.), Ekkard Brinksmeier, Oltmann Riemer, Ralf M. Gläbe (eds.)
High caliber optical parts for customer items made from glass and plastic are as a rule fabricated by way of replication. This hugely built creation know-how calls for a number of consecutive, well-matched processing steps known as a "process chain" masking all steps from mildew layout, complex machining and coating of molds, as much as the particular replication and ultimate precision size of the standard of the optical parts. present industry calls for for cutting edge optical functions require excessive precision and value powerful elements in huge volumes. For assembly those calls for it will be significant to strengthen prime quality strategy chains and additionally, to crosslink all calls for and interdependencies inside those method chains. The Transregional Collaborative learn middle "Process chains for the replication of complicated optical parts" at Bremen, Aachen and Stillwater labored commonly and carefully during this box from 2001 to 2012. This quantity will current the most recent medical effects for the full strategy chain giving a profound perception into present-day high-tech production.
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Extra resources for Fabrication of Complex Optical Components: From Mold Design to Product
Michaeli and M. Schöngart mold plate with integrated hydraulic cylinders hydraulic pistons closed cavity cavity with compression gap Fig. 7 Injection mold with integrated hydraulic pistons To investigate core-compression molding with the movement of the clamping unit of the machine, the back part of the mold base containing the hydraulic pistons is replaced by a simple mold plate (Figure 8). This mold plate is directly connected to the compression cores, leading the compression force from the injection molding machine directly to the cavity.
9 Mold halves of the two-cavity injection-compression mold 5 Conclusion Injection molding and injection-compression molding are the primary forming techniques which have a significant potential to produce thick-walled optical parts in mass production. The surface geometry of the optical functional area influences the optical performance substantially as well as internal properties. High requirements concerning the mold design are a result of these demands. In order to meet these requirements, two modularly-designed injectioncompression molds have been developed.
In order to further increase the replication accuracy and to investigate the different variants of injection-compression molding, a new mold base has been designed [Hes10]. Mold Design for Complex Optical Plastics Components 19 An important aspect of the new mold design is to ensure a symmetrical flow of force. This can be achieved with a two cavity mold where the gate is located between the two cavities. As the first mold, this mold is also modular designed for examinations of different lens geometries.