Plastic details modelling

We design plastic products by means of Unigraphics package.

Plastic details can be complex, different with a ramified hierarchical structure. That is why, the traditional designing based on manual designing of flat projections, despite of working expense, does not guarantee exact design decisions, and also requires special processing in order to solve subsequent analytical and technological problems. The complex of basic resources of geometrical modelling by means of Unigraphics allows us practically without limitations to reproduce spatial geometry for various classes of plastic products. Thus, the received patterns without additional reprocessing are completely suitable for a great number of analytical and technological appendixes of Unigraphics; as except for the geometrical data also topological and technological data are formed.

We use UG/Drafting module in order to receive associative drawings of a detail according to 3D-patterns. The module allows us to create precise drawings and sizes of a pattern. Such a similarity saves time, providing updating of a drawing according to the changes made in a pattern. All aspects of the drawing, including the hidden lines and sections are automatically updated. There is an opportunity of automatic accommodations of aspects, creation of isometry, sections, and remote aspects.

In order to develop an optimum engineering design, maintenance of its durability and reliability during operation we also carry out the analysis of design behaviour under influence of external forces. The required durability of a product is provided both structurally, by choosing an appropriate geometrical form and sizes of a product, and by choosing an appropriate material for its manufacturing. The procedure of plastic durability estimation is based on FE-method and on the software of EDS-Unigraphics or MSC\Nastran. These packages allow carrying out virtual tests of the designed product without its manufacturing, and the results of the structural-strength analysis give an opportunity at the design stage to make changes and revisions in the design, i.e. to optimise it from the point of its durability. It reduces probability of product failure so, raises designing quality. More

For a visual estimation of design decisions we have an opportunity to apply both Rapid Prototyping technology and elastic casting. Special two-componental polymers, which physicomechanical properties after consolidation are identical to traditional thermoplastic plastics (ABC, PS, PP, etc.), are applied to elastic casting. The color of plastic can be different. We also have clear polymers, which properties are the same after ultra-violet radiation. More

We also offer an opportunity to analyse the geometry of your product or the running system design of a casting die from the point of its fillability with a polymeric material at the design stage, to predict possible defects of products, and to choose the most economic decisions. The analysis is carried out by means of Moldflow - recognized leader among software packages for numerical modelling of hydrodynamics and heat/mass exchange processes. During the analysis of injection at any time we can receive graphic allocation of all major melting parameters (temperatures, pressure, tension, rates of shifts, thickness of a stiffened boundary layer, viscosity, etc.), determining the quality of a product. More

The obligatory criteria of the quality is an elimination of such defects, as: misruns, cold laps, scales, silveriness, traces of streams, strincages, spaces, tears, distortion, turbidity, spews, etc. Thus, during the optimisation the following tasks are solved:

• Optimisation and balancing of product thickness
• The analysis of foundry deformations and reasons of distortion, calculation of residual pressure
• Choice of a casting machine and material
• Reduction of a product manufacturing cycle
• Choice and optimisation of a running system
• Optimisation of a cooling system

After the analysis of form fillability with a polymeric material the highly skilled designers will design rigging for your inventory and applied materials. The result is the design of rigging and if it is necessary, the design documentation.

The design stage of rigging is a component of the closed cycle: reception of the initial information for the engineering analysis - optimisation of manufacturing technology - optimisation of a product design. Use of modern technologies and a uniform mathematical pattern of a product allows to receive in the shortest possible time mathematical patterns of rigging form-building zones, rigging design, and also cooling and hot-runner systems. At the design stage of rigging there is a reduction of expenses of the future manufacture. More

When a product and a casting die have been designed we are ready to offer you to place form manufacturing on our production capacities. The processing of form-building details of a form is carried out by program controlet machines with managing programs in the Manufacturing module of Unigraphics system which allows us having specified geometry of a detail and having set technological parameters (for example, the diameter of a tool) automatically to generate a movement trajectory of a tool as file CLSF (Cutter Location Source File). Later this file will be used as the initial data for the postprocessor and calculation of managing programs in codes of the concrete program controlet machine.

It provides automated preparation of managing programs for the rigging with a program controlet machine on the basis of a mathematical pattern of a detail and provides through designing of products of any complexity.

In the process of manufacturing we use only modern inventory, both specialized, and universal, that allows to receive a qualitative surface after machining, copper and graphite electrodes of any configuration, sizes and correlation of the diameter and height, to carry out electroerosive sewed-in operations with large-sized rigging.More

We are lucky to use the experience of our engineers in order to model your products.