MITSUI SEIKI USA’s newest machine series, the J12/J/16 jig borers, combine high capacity and high precision to meet the increasing need for accuracy in machining workpieces like molds and castings. “Jig borers typically last 25 to 30 years,” according to COO Bill Malanche. “Now seems to be the time that people are retiring their legacy machines and looking to buy new.”
The new machines offer Y-axis stroke of either 1,250 mm or 1,600 mm, with standard table sizes of 2,400 mm x 1,250 mm, or 2,900 mm x 1,600 mm.
The machines’ strong and durable structures provide table lateral movement accuracy of 2.5 µm or better. The Z-axis guide system is restrained on four sides to maximize rigidity and reliability, and dual ball screws ensure stable feed motion.
For precision holemaking, XY interpolation allows the J12/J16 machines to carry out high-precision contouring by utilizing an end mill instead of a boring tool, eliminating the need to manually adjust a boring tool to accurately finish the hole diameter avoiding bottlenecks. Pitch accuracy is within 5 µm, even for large-pitch holes.
The machines feature a 12,000-rpm 50 taper spindle and automatic tool-change capacity of 60 tools. Additional options (e.g., a quill spindle), increased work capacity, and automation features are available to meet the customers’ needs.
“Machines in Mitsui Seiki’s J12/J/16 jig borer series are engineered to process a large range of part sizes with unceasing repeatability,” Malanche said. “They provide the durability, accuracy and flexibility required in today’s highly-competitive manufacturing environment.”
Learn more at www.mitsuiseiki.com
