At Kyowa Hearts, we specialize in processing thin, small, and narrow leaf springs.
At Kyo-Wa Hearts, we specialize in the processing of "thin, small, and fine" plate springs. We are particularly skilled in the production of contacts and plate springs for mobile phones, computers, and connector parts. The processing of plate springs relies on an understanding of the material properties, especially experience related to springback, supported by accumulated data. Once the design is complete, we start with prototyping. We can handle blank processing through laser cutting, wire electrical discharge machining, and etching, as well as bending processing using temporary molds, accommodating quantities from one to one thousand. For mass production, we utilize progressive dies, capable of producing from 5,000 to over one million units. We cover all aspects. *For more details, please contact us or refer to our catalog.
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basic information
【Product Examples】 ○ Earth Spring → The product is small and has a low bending height. → Innovations for dimensional stability in the non-symmetrical bending parts. → Management of the inner diameter dimensions of the clip shape is important. ○ Kasecon Up Spring → Due to the inward bending, the structure for inserting and removing the bending parts needs to be designed carefully. → Caution is required to avoid damage to the thin extraction parts (do not process more than the specified number through shot count management). ○ Center Contact → For hemming bending processing at a 45° roll direction, the upper and lower parts tend to misalign, so addressing this is key for product stability. → Management of insertion and extraction load. ○ Sliding Spring → The three blades have a tapered shape, so care is needed in the production of parts and their alignment. → After pressing, a heat treatment process is involved, so anticipate dimensional changes in the thin rounded parts (φ0.8) and manage the insertion and extraction load. ● For more details, please contact us or refer to the catalog.
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Company information
Our company specializes in fine, complex, and precision press processing. *We also sell molds! We can handle everything from examining the shape of customer parts, prototyping, mold manufacturing, to mass production processing. 【Our Expertise Developed Over Time】 1. Deep drawing and flat spring processing 2. Fine processing (plate thickness: 0.03) 3. Complex shapes and high-precision bending processing 4. Processing of difficult materials (titanium, shape memory alloys, magnesium alloys, etc.) 【Proposal Power Supporting Quick Start-Up】 Many customers consult us during product development, asking if certain processing is possible, seeking advice during the conceptual stage, or wanting to start with prototyping. In the development phase, we provide comprehensive advice on material and shape decisions, as well as secondary processing, to fully support the launch of new products. We also believe that "refined products are a testament to stable quality," and we enter mass production only after sufficient adjustments (taking extra care). 【Efforts in In-House Product Development】 We are also engaged in in-house product development utilizing our cultivated precision press processing technology. We have developed a new type of file for binding documents, called "Nuke," which allows for easy insertion and removal of documents from the center, attracting attention as an item that enhances office productivity.
