Location History:
- Fukuoka, JP (2002)
- Kitakyushu, JP (2002)
Company Filing History:
Years Active: 2002
Title: Kazuhiro Maekawa: Innovator in Linear Motor Technology
Introduction
Kazuhiro Maekawa is a prominent inventor based in Fukuoka, Japan. He has made significant contributions to the field of linear motor technology, holding 2 patents that showcase his innovative approach to engineering.
Latest Patents
One of his latest patents is a moving-coil linear motor free of cogging. This motor features a rotor that includes separated block cores, each with a length equivalent to eight times the magnet pitch (Pm) and nine teeth along its length. The block cores are arranged in line and separated by gaps equivalent to two-thirds of the magnet pitch. The first block is divided into three groups of teeth with armature coils to form U-, V-, and W-phases. Similarly, the second block is grouped to form V-, W-, and U-phases, while the third block is grouped to form W-, U-, and V-phases. The armature coils are designed to differ in phase by 120 degrees from one another to eliminate the sum of the cogging caused by the blocks.
Another patent relates to a linear motor equipped with a row of permanent magnets for a field system. The armature faces the permanent magnets via a magnetized space in an orthogonal direction. The armature core has a winding accommodation groove formed at both sides of armature iron plates, which are produced by punching out oriented electromagnetic steel plates to create a rectangular shape. The core blocks are laminated, and the lengthwise direction is aligned with the rolling direction of the electromagnetic steel plates. This design allows the magnetic flux of the armature winding to flow along the rolling direction, increasing the magnetic flux density and peak thrust.
Career Highlights
Kazuhiro Maekawa is associated with Kabushiki Kaisha Yaskawa Denki, a company known for its advancements in automation and robotics. His work has significantly impacted the development of linear motors, enhancing their efficiency and performance.
Collaborations
Some of his notable coworkers include Yasuhiro Miyamoto and Takato Doi, who have collaborated with him on various projects within the field of linear motor technology.
Conclusion
Kazuhiro Maekawa's innovative contributions to linear motor technology have established him as a key figure in the field. His patents reflect a deep understanding of engineering principles and a
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