Methods' FANUC Robocut EDM Features Improved Wire Threading
The FANUC Robocut C800iB-20 wire EDM from Methods Machine Tools offers new features for increased accuracy, efficiency, and throughput.
Available from Methods Machine Tools, the FANUC Robocut C800iB-20 wire EDM offers features for increased accuracy, efficiency and throughput. This EDM is available with a larger Z-axis configuration and can accommodate workpieces with a maximum size of 49.21" × 38.38" × 19.68" and weighing as much as 6,613 lbs. The C800iB-20 is designed for a range of applications including large molds and stamping dies as well as complex aerospace parts.
FANUC’s high-speed AWF3 automatic wire feed system helps to thread wire within the machine’s maximum 500-mm work thickness (submerged) with an automatic wire recovery to 150 mm work thickness (submerged) when cutting non-parallel-plane workpieces.
Improved pitch error compensation over the entire cutting area, mapped by grid patterns to within ±2 microns, increases machining accuracy. According to the company’s factory tests, the machine can consistently achieve 0.0002" positioning accuracy and 0.0001" repeatability, even during long burns. An iPulse2 flexible pulse control further improves straightness, corner accuracy, surface finish and cutting speeds by keeping the gap consistent according to discharge status and cutting shape.
The FANUC core stitch slug retention feature prevents slugs from dropping, saving time and increasing efficiency. The core stitch function enables operators to set stitch points for cases where long, unattended machining and multi-workpiece cutting are necessary.
Additives, machine settings, workpiece materials and current technology are factors in avoiding common problems with unwanted rust and surface defects.
Originally, wire EDM had two things going against it. It was slow, and often it left an undesirable surface finish. In the last few years, wire EDM builders have fixed the speed problem. Now they're well on their way to fixing the surface finish problem.
Excessive wire consumption on a wire electrical discharge machine is costly. Technology that allows slower unspooling speeds without compromising results appears to be the answer.