Micro components continue to shrink in size, demanding ever-greater precision and improved handling of parts with sub-micron-sized features. New approaches in micro machining technology include higher-precision systems from traditional micro machining developers, as well as techniques using additive manufacturing processes and semiconductor wafer-scale technology on the smallest of micro parts.
It is reported that, not too long ago, before the current precipitous decline in machine-tool shipments, the number of 30-taper machines that were being manufactured and sold in Japan had surpassed the numbers of 40-taper and 50-taper machining centers.
Even though it’s been around since the 1950s, when engineering-grade resins were first introduced, many manufacturers still are not familiar with the many benefits that metal-to-plastic conversion provides.
Today’s products require high finishes, burr-free edges, freedom from contamination, and often close tolerances. Electropolishing provides all of those conditions and more in a matter of seconds for many metal parts. It is a process that has been used for more than a hundred years. It is widely known and the science is widely discussed, but its ability to run job shop lots and high-precision high-volume parts in the same equipment makes it a bit unique.
Sales of cars and light trucks plummeted during the Great Recession and General Motors Co. and Chrysler emerged from government-back bankruptcies in 2009. Since then, total industry deliveries have surged, hitting a record 17.47 million in 2015, according to Autodata Corp.
The use of electrical discharge machining, or EDM, is spreading as manufacturers need more precisely cut workpieces, often made from tough to machine materials.
Materials researcher Metalysis Ltd. (South Yorkshire, UK) recently announced that it has developed a new synthesized graphene material that holds potential for future industrial production. Metalysis, which is focused on commercializing its proprietary electrochemical metal-powder manufacturing technology, said its R&D successfully produced graphene using the company’s own process.
Dau Thermal Solutions Inc. (Macedon, NY) was finding that its spindle speeder was definitely not up to speed when it came up against the test results for NSK’s HES510 series electric spindle.
Burrs, sharp edges, and rough surfaces plague even the most precise metal-cutting or forming process. Deburring and finishing can often be treated as the step-child of a manufacturing process, but its importance is growing as tolerances get tighter and precision devices become the norm.
VMCs have had a productive past, present and the future looks promising
