MAC system can provide an integrated process from punching to weighing, stacking and lamination. By this system rotors and stators can be made into a complete product through only two processes of stamping and lamination, allowing full automation of the motor core manufacturing process.
Improvement of productivity
Advantages of using MAC system
MAC System is in contrast to conventional rotor fabrication whereby several laminations must be individually stamped and then stacked, measured, skewed, die cast, lathed, broached, press fitted with a shaft and finished, all in separate process. Utilization of MAC system typically reduces the labor needed in rotor fabrication by 35-40% and completely automates stator production. At the same time MAC system facilitates production of much smaller motor parts than previously possible using conventional stamping.
MAC (Mitsui Automatic Core assembly) is a stamping tool system which stamps motor cores one by one and completes weighing, lamination by turning (skewing) and binding (caulking) in series.
Japanese Patent 2756899, 2720138
MAC System:
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Automac in-die lamination interlocking using very thin material is possible only with a die of high accuracy.
From the designing and manufacturing of dies to the stamping of cores, Mitsui's integrated global production system guarantees "top quality", "low cost"and "super short lead-time".
Lamination Tooling:
Mitsui's world-class facilities insure not only better quality through environmental control; Mitsui's plant is efficient and organized to gain all benefits from economy of scale, just-in-time logistics, and ownership-based control methodologies to insure each job is done right the first time.
Tool and die products:
Mitsui High-tec has been a pioneer in the industry for more than 50years. Today we still strive for excellence and stay as a precursor in the 21st century.
In the late 1950s, we were internationally recognized for our improvement of U.S. technology for producing tungsten carbide dies. These were harder than conventional steel dies, less affected by
heat, and durable enough to do an one million continuous stampings for each of up to 100 sharpenings which was unprecedented at the time.
In the 80's we greatly enhanced our ability to serve customers when we upgraded the software in our computer-aided design (CAD) system for precision dies. Tied into an automated production system,
this improvement helps us get needed dies quickly to customers.
Mitsui High-tec engineers got the company off to a solid start in 1949 by perfecting a new technique for grinding dies after heat treatment. This advanced die precision to within microns and established Mitsui High-tec's reputation for technological excellence.
A series of technological innovations have made Mitsui High-tec a leader in the die industry. Manufacturers worldwide use our dies to stamp items: rotors and stators for electric motors, components for automobiles, appliances, and communications gear, leadframes for ICs, and transfer molds.
A series of technological innovations have made Mitsui High-tec a leader in the die industry.
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