Miyachi Unitek Offers New Fiber Cutting System

Monrovia, Calif.-based Miyachi Unitek Corp. has added the new Sigma XY fiber cutting system to its welding and laser manufacturing capabilities. Sigma XY reportedly enables the high-speed precision laser cutting of thin metals using a rigid linear drive, gantry-based motion system. Miyashi is marketing the process as an ideal choice for cutting metal laminates, electronic device mounting plates, and medical cutting blades.

The process combines linear motors with the fine spot capability of Miyachi Unitek’s LF series range of fiber lasers. According to the company, this combination allows Sigma XY to offer high dimensional accuracy on cutting profiles. A proprietary laser power ramping algorithm for acceleration and deceleration profiles is designed to provide fast cut times and consistent thermal input for stable cutting. The fiber laser technology offers high-resolution cutting, with optical spot sizes down to 10 microns, and high linear speed cutting possible through high pulse repetition rates. Up to 500W of available laser power makes the Sigma XY able to handle a wide range of materials, including steels, aluminum, and brass.

Miyachi Unitek’s fully integrated laser control optimizes cutting, enabling pulse widths to 20 microseconds, pulse frequency up to 50 kHz, and precise control of the power. The system is constructed of a 4-inch thick granite base secured to a high strength welded steel base designed to provide the mechanical stiffness necessary to accommodate the high acceleration and deceleration rates that minimize cycle times. The Sigma XY is available with a variety of options, including Class 1 or Class 4 operation, several cutting box styles, fume exhaust, part hold down tooling, focus control sensing, programmable gas pressure, high pressure cutting heads, 4-inch or 8-inch travel Z-stage axes motion (the linear axis that represents motions and positions both up and down—the Z-axis is always parallel to the main cutting device), and a control pendant.

Miyachi Unitek is a manufacturer of equipment and systems for resistance welding, laser welding, laser marking, laser cutting, and hot bar reflow soldering and bonding.