Manufacturing technology for precision fitting parts consisting of 4 types and 12 components! Proven track record of delivery to major automotive parts manufacturers!
This is a complex shaped stamping product used for male-female fitting. To ensure that customers can assemble it smoothly and that it does not leak during use, optimal clearance is required, achieving a face clearance of 0.16 mm during fitting. It balances leak prevention with workability during fitting and has been adopted by major Tier 1 companies. The outer part is made of stainless steel with significant springback, requiring contour accuracy in the hundredths for both male and female components, which we address with our unique press forming technology developed over many years in fuel supply unit processing. This product also accommodates barrelling processing, which is said to be very difficult due to the tight bending edge. The inner part is processed in a progressive manner with groove and drawn shapes, and we conduct precision management of individual parts to ensure that five stacked sets can fit together with the outer part at the required precision.
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basic information
Material: Equivalent to SUS304 Product dimensions: t1.0 x 58 mm x 137 mm x 25 mm (when fitted) Technical points: Precision fitting of 12 parts in 4 types, bar rolling processing at the edge of the bend Process: Transfer press processing - Cleaning - Inspection 【Main Tolerances】 Profile tolerance 0.08, Flatness 0.1, Longitudinal tolerance range for fitting 0.06, Fitting clearance 0.16 Numerous specified tolerances such as protrusion height 0.05, hole diameter 0.1, etc.
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Applications/Examples of results
This is a part for the EGR cooler. The product consists of a total of 19 parts from 7 different types, including the aforementioned outer and inner components, parts that hold both ends, and fins sandwiched between the inner male and female components. Our company is responsible for the manufacturing of 12 parts from 4 of those types. Since fitting with other companies' products is necessary, it meets the contour requirements in the percentage range, and we also perform bar-rolling processing at the edge of the bent surface.
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Company information
Koukougyou Co., Ltd. has established a consistent production system from mold making to press processing and sub-assembly since its founding in 1964. As a press manufacturer equipped with development capabilities, we have grown by closely addressing our customers' challenges. We sincerely confront individual customer issues such as high purchase costs, labor-intensive processes, unstable quality, and inability to accommodate mass production. By proposing method replacements through repeated discussions, we solve problems and build a Win-Win relationship with our customers. We tackle customer challenges with outstanding technology and ideas, exceeding the limits of conventional press processing to produce stainless steel thick plate products, precision deep drawing, precision irregular shape drawing, and composite molding with other materials. If you have dissatisfaction or issues with the procurement of metal parts or the internal work using those parts, please feel free to reach out to us.
