キョーワハーツ Product Lineup

This is a collection of case studies from Kyowa Hearts that solves various challenges such as weight reduction, long lifespan, miniaturization, assembly labor saving, fine precision, and process reduction. [Contents] - Integrated molding of resin and magnesium - Dissimilar material joining through precision drawing and laser sealing (SUS, copper, aluminum, etc.) - Small diameter drawing processing of brass LED parts with an inner diameter of φ0.7 - Roundness of 0.03, complex bending of phosphor bronze (curling diameter 2.3) - Skillfully achieving concentricity and coaxiality! Complex-shaped antenna elements - Corner tube drawing with progressive dies, processing of notches and dowels within the mold, etc. ● For more details, please download the catalog or contact us.

• Press Dies

The clearance is said to be 5% of the normal plate thickness, which means that for a plate thickness of 50μm, it would be 2μm. At this level, fine adjustments by humans are required, exceeding the precision of machine tools. Kyowa Hearts specializes in processing "thin, small, and fine" leaf springs. We are particularly skilled in the production of contacts and leaf springs for mobile phones, computers, and connector parts. For more details, please contact us or refer to our catalog.

• Spring

In precision press processing, for composite shapes with gaps involving hemming bends and curling, we perform hemming (flanging) processing that does not adhere to the tip of the curling process. This ensures safety during assembly without the worry of injury. As one of our challenges in new processing technologies, we are working on progressive drawing processing. As a result, in addition to conventional curling techniques, we can offer drawing processing for items that require strength, thereby accommodating a wider range of customer development designs. For more details, please contact us or refer to our catalog.

• Other machine elements

The material of the small hole is stainless steel, with a thickness of 0.15, and a flatness of 0.08 or less, intended for use in shield cases. The thickness of the dowel is 0.2, the material is stainless steel, the flatness is 0.08 or less, the width is 0.8, and the bending height is 1.4. When these two are combined, they will not come apart even when dropped from a height of 20 cm, maintaining a flatness of 0.08 or less during engagement. Kyowa Hearts specializes in processing thin, small, and fine plate springs, from handmade prototypes to precision press processing using precision progressive dies. We are particularly skilled in the production of compact plate springs for mobile phones, computers, connector parts, and more. *For more details, please contact us or refer to our catalog.*

• Other machine elements

Engineering reduction: We have achieved the processing of drawing, notching, and fitting within the mold using progressive dies for corner tube drawing and notching. Kyowa Hearts specializes in "thin, small, and fine" plate spring processing, from handmade prototypes to precision press processing using precision progressive dies. We are particularly skilled in the production of compact plate springs for mobile phones, computers, connector parts, and more. For more details, please contact us or refer to our catalog.

• Other machine elements

We have increased the strength by adding a 0.45 width beat to a 0.7 width. The material of the product is beryllium copper, with a thickness of 0.1, and the shape features a narrow foot width of 0.75, intended for use as a contact spring. Kyowa Hearts specializes in processing thin, small, and fine plate springs, from handmade prototypes to precision press processing using precision progressive dies. We are particularly skilled in the production of compact plate springs for mobile phones, computers, and connector components. *For more details, please contact us or refer to our catalog.*

• Other machine elements

This is an introduction to a product with a taper from the tip to the neck, featuring an inner diameter of Φ0.7. The product has a thickness of 0.64, a height of 4.5, an inner diameter of φ0.7, and is made of brass, intended for use in LED-related components. Kyowa Hearts specializes in processing thin, small, and fine plate springs, from handmade prototypes to precision press processing using precision progressive molds. We are particularly skilled in the production of compact plate springs for mobile phones, computers, and connector parts. For more details, please contact us or refer to our catalog.

• Other machine elements

Precision press processing and true circular curling processing is a method of rounding without using a core. Each wing is curled individually and then rounded overall, resulting in a durable sliding spring. Kyowa Hearts specializes in "thin, small, and fine" plate spring processing, from handmade prototypes to precision press processing using precision progressive molds. We are particularly skilled in the production of compact plate springs for mobile phones, computers, and connector parts. For more details, please contact us or refer to our catalog.

• Other machine elements

We will solve the following problems: 'How should I bend a 90° bend that approaches a curl bend?' and 'How can I finish the hem (folded back) bend joint without any gaps?' Kyowa Hearts specializes in processing thin, small, and narrow leaf springs, from handmade prototypes to precision press processing using precision progressive dies. We are particularly skilled in the production of compact leaf springs for mobile phones, computers, and connector parts. *For more details, please contact us or refer to our catalog.

• Other machine elements

Precision press processing involves the punching of numerous narrow slits, with 49 slits of 0.3 mm on each side, along with measures to prevent breakage during the production of thin punches. It also includes the hemming process at the tips of 50 pieces. Kyowa Hearts specializes in the processing of "thin, small, and narrow" flat springs, from handmade prototypes to precision press processing using precision progressive dies. We are particularly skilled in the production of compact flat springs for mobile phones, computers, and connector parts. For more details, please contact us or refer to our catalog.

• Other machine elements

It is to ensure the concentricity and coaxiality of the four circles, which have different diameters and unstable connections, within 0.03. The material of the product is phosphor bronze, the thickness is 0.2, the shapes are φ1.9 at one location, φ3.7 at three locations, with a total length of 14, and the application is for antenna elements. Kyowa Hearts specializes in "thin, small, and fine" plate spring processing, from handmade prototypes to precision press processing using precision progressive molds. We are particularly skilled in the production of compact plate springs for mobile phones, computers, connector parts, and more. For more details, please contact us or refer to our catalog.

• Other machine elements

The technology for extracting slits below the thickness of small parts involves creating a triangular shape for strength while ensuring point contact with the counterpart component. The material of the product is phosphor bronze, the thickness is 0.3, the slit width is 0.2, and the application is contact springs. Kyowa Hearts specializes in processing thin, small, and fine plate springs, from handmade prototypes to precision press processing using precision progressive dies. We are particularly skilled in the production of compact plate springs for mobile phones, computers, and connector components. For more details, please contact us or refer to our catalog.

• Other machine elements

To fit with the counterpart parts, a roundness of 0.03 is an important point. The thickness of the product is 0.15, the material is phosphor bronze, and the shape is a curling diameter of φ2.3. Kyowa Hearts specializes in processing thin, small, and fine leaf springs, from handmade prototypes to precision press processing using precision progressive dies. We are particularly skilled in the production of compact leaf springs for mobile phones, computers, and connector parts. For more details, please contact us or refer to our catalog.

• Other machine elements

Kyo-Wa Hearts, which has extensive know-how in precision press processing and a wide range of parts processing and product development, has established a "Product Development Consultation Office" to solve engineers' problems. For designers, choosing the right company to partner with is key to smoothly advancing development. We will utilize our cultivated technical skills, proposal capabilities, and problem-solving abilities to passionately resolve our customers' issues. 【Examples of Support】 ■ I would like you to design a leaf spring that meets the specifications I have in mind. ■ I was told that the design is impossible to achieve in internal discussions... ■ We were able to create a prototype, but it doesn't take shape in mass production... ■ We are mass-producing with another company, but the dimensions are unstable, and we are troubled. ■ I want to improve a commercially available product. ■ I am having trouble achieving precision with conventional processing methods. *For more details, please refer to the PDF document or feel free to contact us.

• Other processing machines

「NOUQUE（ヌーケ）」は、パイプ式ファイルと同じだけの書類収納力を持ちながら、 世界初の可動式綴じ具によって、これまでパイプ式ファイルではできなかった 「どこからでも書類を自由に抜き差しする」ことを実現。 綴じ具と綴じ穴の形状を工夫することによって、驚くほど簡単に書類の抜き差しができるようになりました。 【特徴】 ○溝付穴と可動式綴じ足でどこからでも抜き差し自由 ○専用パンチャーあり ○特許取得済 詳しくはお問い合わせ、またはカタログをダウンロードしてください。

• Office supplies and stationery

At Kyo-Wa Hearts, we perform "micro press processing" for connector parts, terminals, and thin plate springs. From material and shape considerations to prototyping, mold manufacturing, and mass production, we utilize the technical skills, proposal capabilities, and problem-solving abilities we have cultivated over the years to solve our customers' challenges. 【Press Processing】 ■ Plate thickness: 1mm or less, minimum thickness 30μm ■ Size: Smaller than palm size, minimum size smaller than a grain of rice ■ Materials: SUS304, SUS631, SUS420J2 Phosphor bronze, nickel silver, beryllium copper, titanium ■ Application fields: Connector parts, terminals, thin plate springs *For more details, please refer to the PDF document or feel free to contact us.

• Press Dies