The tool: KOMET KUB® Drillmax XL Small diameter drill for deep holes
Micro Molding
the proper size and location of all the vents as well as the ideal location and size for the runner and gate. Another step Dynomax took to improve their precision micro-molding process was to invest in new technological equipment. They purchased a new Arburg Micro Injection molding unit, and placed the device on an existing Arburg Allrounder 270 A injection molding press. The new unit is an all-electric press that is used for high-precision and accuracy. It operates with an 8mm injection screw, and is designed spe- cifically for micro-molding parts such as the thin-wall compo- nents produced at Dynomax. The unit has a precision dosage control that allows injections of the exact volume of material needed to fill the mold tool, and has a continuous material feed to reduce temperature fluctuations throughout the mold. The micro injection molding unit was created with the mental- ity of first-in-first-out. This means there is less degradation of the material as the temperature changes within the mold, so the finished part will not have any of the common issues such as cracking, short-shots, or weld lines.
Besides the new investments, Dynomax was already using other technologies to mold parts with tight tolerances. One such piece of equipment is an AgieCharmilles EDM machine. These machines are capable of holding tight tolerances up to .0001”, and the tooling is designed and built around a shrink- age factor for the molded piece part.
The idea: Offering a standard range of small diameter drills for depths of 20xD and 30xD.
Why it’s great: • Extremely high feed rates and cutting speeds.
Learn more about this and other great ideas. Go to www.komet.com/greatideas or scan this QR code.
Another device being used at Dynomax is a custom- ized vision system that was designed and built around the products the company molds. Certain products are too small for the mold protection on the machine to detect, so the custom vision system is used to supplement the machine’s shortcoming. The vision system ensures whether or not mate-