To provide the high-performance results demanded in today’s moldmaking, many indexable-insert ballnose endmills use PVD-coated, precision-ground, micrograin- carbide inserts. Experience shows that such inserts perform best with sharp edges, […]
In addition to modular endmilling systems specifically designed for mold-making and other copymilling applications, general indexable-insert endmilling systems are available that include components for high-speed/high-feed finishing of molds and dies. […]
The term “high-speed machining” in mold and die applications can actually mean two different things. Primarily, it means finishing operations at very high spindle speeds and super-high feedrates that provide machined surface finishes fine enough to dramatically reduce, or even eliminate, […]
Indexable-insert ballnose endmills for high-speed finishing of molds can be purchased as individual units from a standard endmill catalog, or assembled from components of available modular end-milling systems. […]
Both solid-carbide and small indexable-insert ballnose endmills are capable of the speeds and feeds required for high-speed finishing of molds. Moldmakers should keep in mind, however, that the indexable-insert tools offer important cost advantages – starting with a much lower replacement cost and no regrinding. […]
With the primary focus on hot runner applications, the new quick flow analysis technology and software offers several features and advantages. […]
The importance of runner analysis on design and molding seems to have been long overlooked. When many flow analyses are carried out, the focus tends to be mainly on the part and cavity. However, the runners play a much more significant role than many realize. The polymer melt always fills the runner system first after [...]
Movable cores and side-actions are commonly used on injection molds to make complex geometries possible. While details are more complicated than described here, some simple calculations provide worst-case estimates for proper sizing. […]
In tooling molds, the mold base serves as the foundation onto which various components of the mold assembly are mounted. It provides support and stability for the mold cavities, cores, and other components. Key components of an effectively engineered mold base include: 1) Manifolded water channels—Custom-sized to each application to ensure optimal cooling, minimal connections [...]
A complete mold base project should include: […]