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FDK develops a grinding system that can complete transparent resin grinding in a short time
FDK has developed an innovative polishing technology that utilizes magnetic abrasive materials to efficiently process soft materials like resins. This method not only allows for the rapid polishing of transparent resins—such as acrylic, which can achieve a light transmittance of up to 90%—but also enables surface treatment of flexible materials, including sheets and non-magnetic thin metal films.
The process is straightforward: a magnetic paste is applied to a specialized turning tool equipped with a magnet at its tip. Once in place, the tool is rotated and brought close to the workpiece, such as a resin part, for effective grinding. Thanks to this technique, the entire process—from resin shaping to final polishing—can be seamlessly integrated into existing automated systems like NC machines, improving efficiency and consistency.
The abrasive material used in this process is derived from a columnar iron-based magnetic body and is applied to the turning tool in a brush-like manner. This design allows the abrasive to conform closely to the shape of the workpiece, making it ideal for polishing complex or three-dimensional surfaces. Unlike traditional mechanical polishing methods that often damage the surface of soft materials like resins, this magnetic polishing technique significantly reduces surface roughness to 20 nm or less, ensuring a much smoother and more precise finish.
This advancement opens up new possibilities in precision manufacturing, especially in industries where high-quality surface finishes are critical, such as optics, medical devices, and advanced electronics.