Language: 日本語 | English
Language: 日本語 | English
High-precision and complex-shape processing of spring materials (SUS304, SUS631, beryllium, phosphor bronze, etc.)
We offer a comprehensive service, from considering shapes with 3-D diagrams to examining and proposing materials,
plate thickness and various processing methods, followed by testing, evaluation, progressive mold manufacturing and mass production.
We provide 100% support to speed up development for our customers.
We also accept press stamping with dies produced by other companies. Put our ability to maintain dies and our quality assurance to good use. We have presses between 20 and 150 tons and can handle die sizes of up to 900 mm, plate thickness of 2 mm and materials width of 200. Materials include SPCC and SUS springs.
When manufacturing round shapes with press stamping there are two ways: curling and drawing.
Either method is available at our company.
We'll propose the optimal method keeping in mind the purpose for using the product, the required strength, the lead time allowed, etc.
Product Name: Connector Terminals
Material: C1100R-1/2H (ROHS Compliant)
Thickness: 0.2mm
Total Length: 2.9mm
Bending Angle: 135°
Expertise in Micro Precision Press Processing
Kyowa Hearts specializes in manufacturing thin, small, and narrow micro-press processed products. Our expertise particularly lies in the production of compact leaf springs and connector components for PCs and electronic devices.
From prototyping, mold design, and manufacturing to mass production, all processes are carried out in-house at our Yokohama factory, ensuring short lead times and flexible support to meet customer requirements.
We also have metal material specialists available, so please feel free to consult us regarding material selection or any other inquiries.
For more examples of leaf spring products, click here:
https://www.kyowa-hearts.com/spling/
☆ Frequently Asked Questions
https://www.kyowa-hearts.com/faq/
☆ Equipment Information
https://www.kyowa-hearts.com/setsubi/
☆ Contact & Process from Prototyping to Mass Production
https://www.kyowa-hearts.com/flow/
＜Contact Information＞
Kyowa Hearts Co., Ltd. – Rumi Sakamoto
■ Address: 1-5-1 Takata-Nishi, Kohoku-ku, Yokohama, Kanagawa, Japan
■ TEL: 045-593-6116 FAX: 045-593-6121
■ Official Website: https://www.kyowa-hearts.com
Material / Thickness:
Material: C2680R-1/2H
Thickness: 0.2mm
Processing Details / Precision:
Drawn Section: Outer diameter φ1.2, Height 3mm
Curling Section: Outer diameter φ7mm
Key Points in Progressive Die Manufacturing:
Ensuring that the φ1.2, Height 3mm narrow-drawn section is processed without tearing.
Designing the curling process to achieve roundness without using a core metal.
Key Points in Press Processing:
Proper handling of scrap from piercing the tip of the drawn section.
For more examples of deep drawing processing, click here:
https://www.kyowa-hearts.com/sibori/
☆ Frequently Asked Questions
https://www.kyowa-hearts.com/faq/
☆ Equipment Information
https://www.kyowa-hearts.com/setsubi/
☆ Contact & Process from Prototyping to Mass Production
https://www.kyowa-hearts.com/flow/
＜Contact Information＞
Kyowa Hearts Co., Ltd. – Rumi Sakamoto
■ Address: 1-5-1 Takata-Nishi, Kohoku-ku, Yokohama, Kanagawa, Japan
■ TEL: 045-593-6116 FAX: 045-593-6121
■ Official Website: https://www.kyowa-hearts.com
Material: Beryllium Copper C1720R-HM
Sheet Thickness: 0.15 mm
Curling Outer Diameter: φ1.1 mm
Post-Press Processing: Gold Hoop Plating
The product is the round component in the center of the image. The lower three-fifths of the vertical section is shaped into four blades, with their tips evenly and tightly pressed together.
To ensure the four blade tips are securely in contact, various techniques are applied, such as surface pressing around the blades and shaping them into a perfect circular form. The biggest challenge in the curling process is preventing twisting and eccentricity, as the connecting section to the carrier is only 0.3 mm wide and the pre-curling developed length is just 3 mm.
If you are facing difficulties with precision curling processing, please feel free to contact us.
Other Examples of Leaf Spring Products
https://www.kyowa-hearts.com/spling/
Frequently Asked Questions
https://www.kyowa-hearts.com/faq/
Equipment Information
https://www.kyowa-hearts.com/setsubi/
From Inquiry to Prototyping & Mass Production
https://www.kyowa-hearts.com/flow/
Contact Information
Kyowa Hearts Co., Ltd. – Rumi Sakamoto
Address: 1-5-1 Takata Nishi, Kohoku-ku, Yokohama, Kanagawa, Japan
TEL: 045-593-6116
FAX: 045-593-6121
Official Website: https://www.kyowa-hearts.com
This is an ultra-deep drawing process for nickel silver.
Dimensions: φ8mm, length 140mm, thickness 0.5mm.
We also have experience processing brass, aluminum, and stainless steel.
This is a deep drawing process for square copper tubes.
Manufactured from 0.6mm thick material using deep drawing and ironing processes.
Approximate dimensions: 9mm × 9mm, depth 68mm, sidewall thickness 0.25mm.
A die used for forward and backward extrusion of copper with a 160-ton cold forging press (knuckle joint press).
We operate an 80-ton transfer press and produce 500,000 cosmetic exterior parts per month.
Nippon Forming specializes in designing and manufacturing durable stainless steel plate springs for LED lighting fixtures, engineered to prevent detachment.
[Features]
• Use of highly durable stainless steel materials
• Customization according to customer needs
• Long-term stable use realization
[Product Overview]
• Application: Secure fixation of LED lighting
• Materials: SUS304, SUS301, SUS316, etc.
• Shapes: Clip type, curl type, pinch type
[Main Use Cases]
• LED lighting fixture mounting
• Lighting equipment installation
• Industrial lighting fixation
• Outdoor LED device mounting
• Vehicle and building lighting fixture
[Processing Technology]
• Design considering springback
• Accommodation of complex three-dimensional shapes
• Surface treatment and plating process capabilities
[Nippon Forming's Strengths]
• Proposal of optimal materials and shapes
• Integrated support from prototyping to mass production
• Reliability ensured through high-precision processing
Nippon Forming is a specialized manufacturer of precision-processed wire and strip materials.
We work with various materials ranging from 0.1 to 5mm in diameter. Complex shapes are achievable through NC control.
[Company Information]
Nippon Forming Co., Ltd.
Headquarter & Main Factory: 1-23-2 Kanamachi, Katsushika-ku, Tokyo
Tsukuba Factory: 2924 Ujikai, Ishioka-shi, Ibaraki
https://www.forming.jp/eng/
Nippon Forming specializes in producing high-precision parts with complex shapes using multi-forming machines.
[Features]
• Capability to handle complex shapes
• Precision processing of materials with springback
• Flexible production from small to large quantities
[Product Overview]
• Automatic bending and forming of metal wire and sheet materials
• Support from prototyping to mass production
[Applications]
• Lighting fixture components
• UV equipment components
• Automotive parts
• Agricultural equipment parts
• Power system components
• Power distribution equipment parts
[Processing Materials]
• Nickel-plated hard steel wire
• Stainless steel wire for springs
• Various iron wires (ordinary, annealed, water-drawn, nickel-plated)
• Nickel silver, Inconel, Kovar wire
• SUS316 and others
[Nippon Forming's Strengths]
• Multi-product small-lot production
• Integrated service from material selection to finishing
• Design considering springback
Nippon Forming meets the processing needs for complex shapes and special materials, providing high-precision and durable products. We flexibly accommodate from small lots to mass production, so please feel free to contact us.
Nippon Forming is a specialized manufacturer of precision-processed wire and strip materials.
We work with various materials ranging from 0.1 to 5mm in diameter. Complex shapes are achievable through NC control.
[Company Information]
Nippon Forming Co., Ltd.
Headquarter & Main Factory: 1-23-2 Kanamachi, Katsushika-ku, Tokyo
Tsukuba Factory: 2924 Ujikai, Ishioka-shi, Ibaraki
https://www.forming.jp/eng/
This is a contact bushing component used in household appliances.
The processing method involves progressive pressing and riveting using phosphor bronze (t0.5) + silver.
Our company achieves precision riveting and thick plate punching by applying advanced die and press technologies.
This sample demonstrates punching a phosphor bronze plate with a thickness of t6, leaving a 0.2 thickness on all four sides using press technology.
By utilizing this technology, machining processes that would typically require cutting can now be achieved through pressing, allowing us to deliver optimal QCD (Quality, Cost, Delivery) solutions to our customers.
Key Features:
Thick plate punching with a smooth cut surface
Proprietary die technology
If you are facing challenges with fine press processing, please feel free to consult with us.
By crimping the pins using a progressive die, it becomes possible to minimize the use of expensive materials.
This component is a spring for a spacer.
Component size: 4mm
Plate thickness: 0.2mm
Processing method: Stainless steel is processed using a 45-ton press.
A solid projection was formed on a 1.5mm thick plate in a single press process.
A proprietary technology following Warizaki (Japanese patent obtained).
Method Name: [Turm Method] ★ Turm means tower in German ★
The plate is drawn, and the drawn edge is split along the outer perimeter, forming a three-dimensional integrally molded piece.
[Outer Perimeter Warizaki] Method
A three-dimensional integrally molded piece is formed from a single plate.
ONLY ONE Processing Technology [Turm Method]
Achieves solid rectangular column projections on a thin plate in a single process.
Shinshu Yoshino Electric specializes in in-house production of metal press and injection molding dies, providing a seamless process from prototyping to mass production.
We have accumulated extensive expertise by working with a wide range of companies, addressing various manufacturing challenges.
With our contract manufacturing services, we offer solutions based on our accumulated processing know-how to help resolve your concerns.
Feel free to contact us for a consultation.
We specialize in precision micro-hole components for the low-voltage, home appliance, and office automation (OA) equipment industries.
Using stainless steel (SUS) and specialized resin films, we perform precision press processing to create fine holes.
Specifications:
Hole Diameter: φ0.100mm
Pitch: 0.15mm
Process Flow:
Press mold design & manufacturing → Press component processing
Product Details:
Size: 30mm × 40mm
Production Volume: 5,000 units/day
Production Lead Time: 1–2 months
Additionally, we manufacture a wide range of products, including those for the automotive industry.
For micro-hole press processing, please contact Shinshu Yoshino Electric.
