The design and manufacture of a silicone mold is different from thermoplastic tooling as well: e.g., tolerances, venting, part ejection and the installation of a vacuum system. Although the tooling design is different, optimizing processing variables such as temperature, pressure and time are essential in both thermoplastic molding and silicone molding. […]
Hot runners have long made processing more efficient and cost effective while improving part quality. However, in cleanroom applications, those benefits have been offset by the need to use pneumatic hot runners with slower response times and weaker closing forces. […]
While much has changed in die sinking technology, one of the foremost advancements is the development and continual improvement of adaptive control, or fuzzy logic, to eliminate the guesswork and allow the machine to take control of the metal erosion process. […]
All too often, an EDM is purchased on the premise that optimum performance will be realized regardless of the electrode material used. Part one of this article (March 2010) introduced the effect that the electrode material can have on the adaptive control of a CNC sinker. This article will describe the details of a test [...]
Automation of machining operations is becoming essential for chinese manufacturers to compete globally. With increased machine uptime, capacity and shorter production leadtimes, machining automation provides manufacturers with an edge, enhancing machine efficiencies, increasing revenue streams and improving their overall competitive position in the marketplace. […]
Water as a dielectric in wire EDMs has always been the standard, but the upsurge in micromachining has spurred the use of oil as a dielectric fluid instead. Unfortunately, not many U.S. shops are taking advantage of this technology. Shops that can benefit the most from oil-based wire EDMing include those working with carbide parts, [...]
Another component of preventative maintenance is checking all machine components to make sure they’re in proper working order. These include cables, the wire transport system, rollers, bearings and flush cups. […]
Machine lubrication is important to overall performance. All machines run on ways and move with ball screws. Check with OEM specifications for the recommended lubrication schedule. Positioning accuracy depends on the smooth operation of these items. […]
EDMs require several consumables to ensure top performance. These include power feeders, filters and resin. […]
The more often a machine is cleaned, the easier and quicker it is to maintain. Failure to wipe down machine areas regularly will result in build up and will require significant time and energy to restore. Be careful when choosing your cleaners; […]