Core 3-D CAM Development and Continued Focus on Tool Design
Vero Software, a leading provider of CAD/CAM/CAE solutions for the tooling industry,offers VISI 19, which represents a substantial release with many new features in all areas of the product.
VISI Modelling is the base platform for all products and enhancements include an updated GUI with improved user interaction, new blending capabilities, improved annotation, advanced profile offset, graphical texture mapping and support for the increasingly prominent JT Open file format.
VISI Mould enhancements include an a new Assembly Tool Manager to handle multi-level tool structures, and provide the ability to generate specific tree hierarchy structures for the creation of partial BOM lists. VISI Flow development include a new part quality tool with potential remedy suggestions for each problem area and improved filling analyses and flow balancing due to the fine tuning of melt compressibility at end of the filling phase.
For sheet metal stamping, VISI Progress enhancements include three new dedicated routines to manage complex springback based on results from CMM machines, 3rd party FEA systems and bend section geometry. Each routine includes skimming capabilities to reduce point clutter and allows the operator to define an additional percentage to over compensate for the springback deformation.
VISI 19 represents a release where significant resource was allocated to major CAM development. A number of new machining algorithms have been introduced that will greatly benefit both Vero customers and OEM partners. New CAM routines include 'HM Rib Cutting' for the machining of very thin walls, 'Deep Cavity Machining' for the automated splitting of roughing and finishing toolpaths into separate Z ranges based on collision checking between the piece and tool / holder, providing greater rigidity, reduced vibration & increase tool life.
A new 'Core Roughing' strategy has been developed which generates an improved toolpath shape when working from outside a component. The result is a flowing toolpath that allows the machine to run near to its maximum potential when machining core components. A new 'HM Constant Z' toolpath has been introduced to complement the existing steep & shallow toolpath. This combined finishing routine replaces highly sophisticated 3D pocketing calculations with 2D projection calculations for shallow areas and can dramatically reduce calculation times. Finally a 64Bit engine will boost performance and allow users to benefit from maximum RAM usage.
VISI PEPS-Wire development has continued with new technology added and further migration of historic PEPS capabilities to the new VISI platform. These include slug retention, feature recognition for land and taper features, CT Expert integration, VDM file import and pocketing with finishing allowance, a new routine that allows the user to partially pocket an aperture by specifying the remaining stock left to cut. This dramatically improves wire usage by keeping fresh air cutting to a minimum.
The world of CAD offers many alternatives to shops that want to use the latest 3-D technology for their mold design. This article looks at the benefits of the various approaches and offers some tips on choosing the most appropriate one.
Mold cooling is the single most important factor in terms of mold productivity. Mold cooling improvements will influence cycle time and part quality - both of which will directly impact profitability.
While both hot runner and cold runner systems have their benefits, for design flexibility as well as reduced cycle times and costs, hot runner systems will probably be the better choice.