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.
Use our ability to make proposals, procure materials and cope with quick delivery when you have no time to spare between testing and mass production! In particular, leave fine, narrow, small, thin and complex leaf springs to us. Example: thin: 0.03, small: rice grain size, narrow: diameter 0.5.
【Product Specifications】
Material: Brass C2680R-1/2H
Thickness: 0.64mm
Height: 4.5mm
Drawn Outer Diameter: φ4.6mm
Necked Section:
Outer Diameter: φ1.6mm
Inner Diameter: φ0.7mm
Processing Method: Progressive Deep Drawing
Key Explanation
Deep drawing is a forming process where pressure is applied to a sheet material to create a seamless, three-dimensional shape. This method is ideal for applications requiring airtightness and high strength.
Creating a necked section in the middle of the product presents a high level of difficulty.
Progressive deep drawing is well-suited for small, high-precision products. However, successful execution relies on experience and know-how that cannot be fully quantified.
For more examples of deep-drawn products, 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
Our company specializes in manufacturing components using micro-slit processing, micro-curling processing, and complex bending processing techniques. We have extensive experience in producing contacts and leaf springs for devices such as mobile phones, computers, and connectors.
Specifications
Material: C1720R-H
Thickness: t0.15mm
Inner Diameter of Both Narrow Ends: φ0.75±0.02mm
Outer Diameter of the Center (Wider Section): φ1.5±0.025mm
Total Length: 5.9±0.05mm
＊Additionally, our champion data is:
Material: C5210
Thickness: t0.05mm
Rolled Inner Diameter: φ0.3mm
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
Unlike conventional pipe benders that require fixed-radius dies, our CNC Freeform Pipe Bender allows full control over bend radius and angle through programmed processing. This innovative bending system eliminates the need for frequent die changes and enables highly complex bending operations.
Capabilities Beyond Conventional Pipe Bending
With our system, the following bending operations—previously impossible with traditional pipe benders—are now achievable:
Large-radius bends on the scale of several meters (large R bends)
Continuous variable-radius bends (compound R / progressive R) without intermediate straight sections
3D freeform curves by adjusting the axis angle of compound/progressive bends
Bend angles exceeding 180°
Multiple bend radii in a single continuous process—eliminating the need to change bending dies
Seamless 3D Data Integration
If you provide the 3D centerline data of your pipe (designed with straight and arc segments), we can instantly convert it into our proprietary CNC format using our data converter. This allows for rapid prototyping, much like a 3D printer for pipe bending.
Example Processing Program:
D=42.7
L=120 FF=25.00 FE=25.00
R=100.00 T=90.00 P=0.00 FE=25.00 FF=25.00
R=225.00 T=180.00 P=90.00 FE=25.00 FF=25.00
R=100.00 T=90.00 P=0.00 FE=25.00 FF=25.00
L=120 FF=25.00 FE=25.00
Parameter Definitions:
D = Pipe outer diameter (mm)
L = Length of straight section (mm)
R = Bend radius (mm)
T = Bend angle (°)
P = Axis angle at the connection between different R bends (°)
FF / FE = Relative speed of movement along the XY axis (relative to pipe feed speed)
Production & Custom Processing Available
We offer both small-lot prototype processing and full-scale production using our in-house CNC freeform pipe bending systems.
For inquiries, please prepare your drawings or specific bending challenges, and feel free to contact us!
Stainless steel snap pins are widely used components in industrial equipment, known for their high durability and ease of use.
[Product Specifications]
• Materials: Compatible with SUS304, SUS316, SUS631, and other stainless steel grades
• Wire diameter range: 0.1mm to 5mm
• Corrosion resistance: Approximately 100 times more resistant than standard iron products
• Durability: Engineered for repeated use
• Feature: Easy installation and removal
[Applications]
• Automotive - Door hinges, seatbelt mechanisms
• Construction - Scaffolding fasteners, temporary structure joints
• Agriculture - Harvester part fixation, irrigation system connections
• Industrial - Conveyor belt linkages, control panel cover fasteners
• DIY - Furniture assembly, gardening tool connections
[Manufacturing Technology]
• Precise die design to mitigate springback effects
• Scheduled die maintenance program
• Strict quality control processes based on ISO 9001 standards
We specialize in precision processing of wire and strip materials, accommodating diameters from 0.1 to 5mm. Our NC-controlled manufacturing enables complex shape production.
For inquiries or custom orders, please don't hesitate to contact us.
[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/
A progressive die method for caulking metal to resin.
The riveting technique used is called burring.
This method is applied to components used in automatic curtain rails.
ONLY ONE Processing Technology [Split Method]
Splits a plate into three parts.
We specialize in housing components for lithium-ion batteries used in the weak current and home appliance industries.
Using polycarbonate (PC) material, we achieve thin-wall molding (t = 0.2mm) through high-speed injection molding.
Additionally, we offer textured surface processing, painting, and printing for a refined finish.
Product Specifications:
Size: 30mm × 40mm × 5mm
Production Volume: 7,000 units/day
Production Lead Time: 1.5–2.0 months
We also manufacture a wide range of products for industries such as automotive manufacturing.
For thin-wall molding services, please contact Shinshu Yoshino Electric.
This is an irregular-shaped deep drawing process for aluminum.
Approximate dimensions: 8.5mm × 34mm, depth 80mm, thickness 0.45mm.
This product is riveted using stainless steel plates of different thicknesses.
Riveting adhesion strength: Maintains 8.2N or more
Processing method: Progressive die pressing, ensuring stable product quality
Product size: Approximately 8.65 × 6.025mm
Stainless steel thickness: t0.25 & t0.35
We specialize in assembling liquid mixing components for the weak current, home appliance, and OA (office automation) equipment industries.
The assembly process involves fitting, caulking, thermal welding, and ultrasonic welding of nine sub-components. Additionally, we also design and manufacture assembly equipment in-house.
Product Specifications:
Size: 70mm × 40mm × 10mm
Production Volume: 1,000 units/day
Production Lead Time: 4–5 months
Furthermore, our company manufactures a wide range of products, including those for the automotive industry.
For assembly services using plastic and press components, please contact Shinshu Yoshino Electric.
We specialize in liquid sealing components for the weak current, home appliance, and office automation (OA) equipment industries.
Our two-color molding process utilizes polypropylene (PP) and elastomer (TPE) materials.
Production Process:
Resin mold design & manufacturing
Two-color molding (multi-cavity production)
Product Specifications:
Size: 10mm × 10mm × 3mm
Production Volume: 100,000 units/day
Production Lead Time: 2.5–3.5 months
Additionally, we manufacture a wide range of products for industries such as automotive manufacturing.
For two-color molding services, please contact Shinshu Yoshino Electric.
【Product Specifications】
Material: Phosphor Bronze
Thickness: 0.2
Shape:
φ1.9 (1 location)
φ3.7 (3 locations)
Total Length: 14
Application: Antenna Element
Precision in Concentricity & Coaxiality! Complex-Shaped Antenna Element
We successfully achieved concentricity and coaxiality within 0.03 for four interconnected circles of varying diameters, despite their unstable connections.
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
Introducing Load Testing / Load Measurement Services for Leaf Springs
At Kyowa Hearts, we specialize in the processing of leaf springs.
There are several key points in quality control for leaf springs, but load is one of the most critical factors.
To achieve sufficient load capacity, fine adjustments to the product shape and careful selection of materials are essential.
We have multiple load measurement machines in-house, allowing us to collect data during the prototyping stage to assist in selecting the optimal material and sheet thickness.
Additionally, during mass production, we can measure the load of leaf springs in real time and make fine adjustments to ensure product quality.
Even if you don’t have design drawings, no problem! Reverse engineering is also available.
Feel free to contact us anytime!
☆ 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
Nippon Forming specializes in manufacturing stainless steel plate springs for control cable fastening, designed for use in harsh environments.
[Features]
• Use of highly durable stainless steel materials
• Customization according to customer needs
• Adaptability to various cable sizes
[Product Overview]
• Applications: Control cable fastening in factories, outdoors, and warehouses
• Material: Corrosion-resistant stainless steel
• Size: Adjustable to cable size and quantity
[Main Use Cases]
• Outdoor control cable fastening
• Factory wiring management
• Warehouse equipment cable retention
• Power facility cable management
• Wiring fastening for heavy machinery and industrial equipment
[Processing Technology]
• Materials: SUS301, SUS304, SUS316, SUS631
• Die design considering springback
• Size range: Developed length 30mm-130mm, plate width 1mm-50mm
[Nippon Forming's Strengths]
• Optimal design through detailed consultation
• Highly durable products designed for long-term use
• Products suitable for use under harsh conditions
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 leaf spring component for communication equipment.
Processing method: Progressive pressing & riveting (4 points) using brass (t0.5) + beryllium copper (t0.15)
Product size: 7mm × 9mm × 20mm
Lot size: 1,000 or more
This product joins two different materials within the mold. After pressing, it undergoes heat treatment in our in-house facilities to enhance its spring properties.
This is a leaf spring component for communication equipment.
Processing method: Progressive pressing & riveting (2 points) using brass (t0.3) + beryllium copper (t0.1)
Product size: 8mm × 7mm × 10mm
Lot size: 1,000 or more
This product joins two different materials within the mold. After pressing, it undergoes heat treatment in our in-house facilities to enhance its spring properties.
This is a motor bracket component for communication equipment.
Processing method: Progressive pressing & riveting using stainless steel (SUS), 0.2mm thickness
Product size: 8mm × 5mm × 5mm
Lot size: 10,000 or more
Key feature: The material is rolled into a cylindrical shape and joined from a single sheet.
Forging is a process that makes three-dimentional objects out of materials by crushing, exciting and other deforming procedures.
Various shapes are possible. Consult with us.
Material: Phosphor Bronze C5210R-1/2H, t0.15mm
Outer Diameter: φ2.3mm
Circularity: 0.03mm
At the customer's request, we designed a shape that secures the part inside the hole of the mating component.
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
A 30-ton transfer press used for multi-stage deep drawing of stainless steel.
Nippon Forming specializes in metal bending processing.
We perform high-precision processing for plate springs, wire springs, and metal fittings.
[Features]
• Adaptability to diverse shapes and materials
• Technical capability to meet complex requirements
• Precise bending and punching processing
• Capabilities from small-lot to mass production
[Main Products]
• Contact terminals
• Stoppers
• Various metal fittings
[Applications]
• Precision electronic devices
• Automotive parts
• Industrial equipment
• Communication devices
• Medical equipment
[Processing Technology]
• Bending process considering material characteristics
• Combination with punching process
• Compatibility with various materials (stainless steel, brass, shaped materials, etc.)
[Nippon Forming's Strengths]
• Product supply to a wide range of fields
• Consistent support from prototyping to mass production
• Continuous technological improvement
For inquiries about metal processing, please contact us. We manufacture high-quality products, accommodating complex shapes and special materials.
We are a specialized manufacturer of precision-processed wire and strip materials.
We work with various materials ranging from 0.1 to 5mm. 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/
The punching method involves removing metal material through punching.
Using two 45-ton presses, the punching plate is processed into the required component size.
【Product Specifications】
Thickness: 0.05mm
Material: Stainless Steel
Max Width: 2mm
Total Length: 3.6mm
Height: 0.7mm
Processing Method: Press processing using progressive dies
This is a low-load leaf spring designed to minimize applied force.
The die clearance is 2μm, which requires manual fine adjustments beyond the precision of machining tools.
Maintaining quality with minimal burrs is the key to press processing.
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
We provide a round-tip product by applying splitting (Warisaki) processing technology.
・To change the material shape from flat metal to round metal!
・To put the round shaped part to the flat metal directly!
We can cope with a specially ordered product if the diameter of the round shape is within the dimension which can be put on the press.
We constantly handle with the extending of the materials.
