Leaf Spring Processing

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.

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.