Achieving stable seals and cost-effectiveness with high-precision water jet processing.
■Overview of Processing Example Product Name: Clutch Cover Gasket Dimensions: 1.5t × φ355 × φ322 (with P350 holes) This processing example involves the production of a gasket for a clutch cover using D6000 (1.5t). In addition to the outer and inner diameters, the inclusion of P350 bolt holes required simultaneous precision in hole positioning and shape. In this application, "compliance of the joint surface" and "ease of alignment during assembly" are crucial as they directly relate to oil sealing performance. Therefore, the drawing shape was converted into processing data, and the outer circumference, inner circumference, and hole drilling were all processed together using water jet cutting. By processing without affecting the material with heat, the reproducibility of the shape and the quality of the end face are stabilized. As a result, conditions that facilitate alignment during assembly and ensure stable finishing of the sealing surface have been secured. Furthermore, the adoption of D6000 contributes to both practicality and cost advantages for oil seal applications.
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■Product Features (D6000) The D6000 is a general-purpose joint sheet primarily made of non-asbestos fibers and synthetic rubber. It excels in workability and flexibility, and it meets the JIS standards for plumbing fixtures. It can be used as a gasket for general piping and equipment for water, oil, and gas, but it is not suitable for steam lines and is recommended for use at temperatures below 150°C. ■Processing Method (Water Jet Cutting) Water jet cutting is a water pressure cutting machine that uses high-pressure water to cut materials. It processes by spraying high-pressure water. By changing the injection nozzle according to the processing material, high-quality products can be produced in a short time. Additionally, the dimensional tolerances that were significantly affected by traditional manual processing are greatly improved, resulting in stable processing accuracy. The taper of the cut surface from press processing can also be improved with water jet cutting.
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■Q&A Q1. What are the advantages of making a clutch cover gasket with D6000? A1. The advantages are its high practicality for oil seal applications and the ease of balancing processability and cost. Q2. How do you ensure precision with the hole-punched shape of P350? A2. By converting the drawing shape into processing data and machining the outer circumference, inner circumference, and hole drilling based on the same reference, we ensure reproducibility of hole positions. Q3. What are the strengths of water jet processing? A3. Its strengths lie in the ability to process without thermal impact and the ease of achieving high precision in finishing the outer circumference, inner circumference, and hole drilling all at once. ■Daiko's responsiveness We provide consistent support from material selection consultations to processing method proposals and converting drawing shapes into processing data. We can also accommodate prototypes, small lots, and custom shapes, so you can consult us from the specification consideration stage for clutch cover gaskets.
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Company information
Daiko is a manufacturer specialized in processing various industrial products, including gaskets and packing. With industry-leading processing equipment, including one of Japan's largest water jet cutting machines, and a wide range of materials such as joint sheets, rubber, resin, and metal, we meet our customers' diverse needs. Leveraging the technology and experience we have cultivated over 50 years, we provide high-quality, short-lead-time, and low-cost products to contribute to solving our customers' challenges. To respond to our customers' varied needs, Daiko's production bases are equipped with various processing facilities. Among them, the water jet cutting machines, with a total of four installed at our Osaka headquarters and Tokyo branch, boast one of the largest scales in the country. The maximum processing range is W4,000 × L5,500 mm, allowing for the high-precision manufacturing of large-diameter gaskets and packing. By maximizing material efficiency, we achieve the provision of 'high quality at low cost.'
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