Through-Spindle Dust Collection For Composites And Graphite
A vacuum system for the machining center draws particulate through the center of the tool.
This video shows a dust-collection system developed by Mori Seiki that draws dust-like chips up through the center of the tool, resulting in clearer air and a cleaner machining environment when the machine is used to mill or drill composite materials or graphite.
The system, called "Zerochip," consists of a high-pressure vacuum system that draws through the centerline of the spindle, as well as special hollow-center cutting tools and a special Zerochip toolholder that includes a bore through the center.
In milling tests using this system in carbon fiber reinforced plastic (CFRP), a 16-mm end mill with PCD edges milling at 2,000 mm/min. feed rate was able to capture 95 percent of the dust generated. This video shows a similar level of collection.
When this aerospace job shop settled on machining tungsten alloys and other heavy metals as its specialty, it had to have a machine tool, cutting tools, workholding and process know-how to succeed.
With some familiar names in the machine tool building business fading away recently through mergers, acquisitions, or shutdowns, it may be interesting to learn of an unfamiliar or little known machine tool builder.
The force that holds the toolholder in the machining center's spindle can weaken over time. If you haven't checked drawbar force in a while, this may be the weak link in your process.