Accurate machining New jig borer series combines large capacity and high precision

Source: Mitsui Seiki

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According to Mitsui Seiki USA, the market demand for these ultra-precise machines is on the rise. Now seems to be the time that people are retiring their legacy machines and looking to buy new.

The J12/J16 machines to carry out high-precision contouring by utilising an end mill instead of a boring tool.
The J12/J16 machines to carry out high-precision contouring by utilising an end mill instead of a boring tool.
(Source: Mitsui Seiki)

Mitsui Seiki’s newest line, the J12/J/16 jig borer series, combines large capacity and high precision to meet the increasing need for accuracy for machining workpieces such as moulds and castings. The 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 maximise rigidity and reliability, and dual ball screws ensure stable feed motion.

For precision holemaking applications, XY interpolation enables the J12/J16 machines to carry out high-precision contouring by utilising 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 toolchange capacity of 60 tools. Additional options such as quill spindle, increased work capacity, as well as 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,” said Mitsui Seiki USA’s Bill Malanche, COO. “They provide the durability, accuracy and flexibility required in today’s highly-competitive manufacturing environment.”

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