キョーワハーツ List of Products and Services

This document explains why there are price differences in molds between companies. It includes points such as design philosophy, such as "what kind of mold lifespan (guaranteed shots) is assumed," machining accuracy, materials used, and processing methods. Additionally, we introduce our basic approach to mold manufacturing and our processing achievements. Please feel free to download and take a look. [Contents] ■ Why there are price differences in molds between companies ■ How these differences lead to price variations in molds ■ Kyo-Wa Hearts' basic approach to mold manufacturing ■ Processing achievements *For more details, please download the PDF or feel free to contact us.

• Mold
• Mold Design

This document is a collection of case studies from Kyo-Wa Hearts Co., Ltd., which possesses a wide range of know-how in precision press processing and mold manufacturing, as well as a product development consultation service. We introduce a case from a testing equipment manufacturer that is currently using cut pipes for parts but is missing business opportunities due to low production numbers. Additionally, we also include cases from automotive parts manufacturers and cosmetics case manufacturers. Please take a look. [Contents] ■ Case 1: Wanting to switch from pipe to curling processing to increase production numbers ■ Case 2: Designs that are impossible to realize in-house ■ Case 3: Prototypes were successful, but they did not materialize in mass production ■ Case 4: Production is done by another company, but dimensions are not accurate ■ Case 5: Conventional processing methods do not achieve the required precision ■ Processing achievements *For more details, please download the PDF or feel free to contact us.

• Other molds

In this document, we will introduce the curling products processed by Kyowa Hearts, focusing on key points for mold production and press processing. We will present examples such as the "contact spring," which was designed to prevent the workpiece from shifting during bending processing to achieve roundness for thin curling processing (inner diameter 0.3), and the "sliding spring," which has three blades shaped in a tapered form, requiring careful alignment of the upper and lower parts. Additionally, we have included processing achievements related to materials at the end of the document. We encourage you to read it. [Contents (excerpt)] - Contact Spring (C1720 t0.06) - Sliding Spring (C1720 t0.15) - Drum Spring (C1720 t0.15) - Drum Spring (C1720 t0.1) - Antenna Element (C5210 t0.2) *For more details, please download the PDF or feel free to contact us.

• Processing Contract

In this document, we introduce our company's efforts to work with difficult-to-process materials by material type. We provide detailed information on the use of press lubricants, processing of titanium, and processing of magnesium alloys. Additionally, our company will be exhibiting at the 46th Industrial Technology Exhibition "Technical Show Yokohama 2025" held at Pacifico Yokohama. [Contents (Excerpt)] ■ Press processing of stainless steel ■ Measures to improve mold durability ■ Processing of titanium ■ Processing of magnesium alloys ■ Nickel alloys *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

At Kyo-Wa Hearts, we specialize in the manufacturing of thin plate springs. In this document, we will introduce information following the basic selection methods, including examples of material selection based on customer inquiries and usage cases in special environments. Additionally, we will be exhibiting at the "Metal Press Processing Technology Exhibition" and the "Machine Elements Technology Exhibition," both held from June 21 (Wednesday) to June 23 (Friday), 2023. We sincerely look forward to your visit. [Contents] - Use of stainless steel and copper and copper alloys - Selection of non-magnetic spring materials at high strength levels - Considering the use of spring materials in high-temperature environments - Spring materials used in corrosive environments - Examples of springs with special structures *For more details, please refer to the PDF document or feel free to contact us.

• Spring
• Other metal materials

The most commonly used metal material is steel, but due to its excellent properties, stainless steel is widely used in electrical, electronic, and automotive components. This document introduces the production of Kyo-Wa Hearts' products, specifically the use of stainless steel sheets in press processing, highlighting their characteristics and applications based on functionality. Our company produces a large number of precision flat springs, and among them, stainless steel, along with copper and copper alloys, receives a significant number of specifications from our customers. We invite you to read on. 【Contents】 ■ High-strength stainless steel for springs ■ Manufacturing products using bending and drawing processes with stainless steel ■ Using stainless steel for electromagnetic wave shielding ■ Surface treatment of stainless steel 【INTERMOLD 2023 (34th Mold Processing Technology Exhibition) / Mold Exhibition 2023】 ■ Date: April 12 (Wed) - 15 (Sat), 2023, 10:00 - 17:00 ■ Location: Tokyo Big Sight ■ Booth Number: 2-401-30 (Hall 2) ■ URL: https://www.intermold.jp/top/ *For more details, please contact us.

• Processing Contract

In the use of combinations of different metals, consideration for corrosion at the joints is necessary. This document explains the corrosion phenomena as issues in the use of dissimilar metals. It includes topics such as "corrosion occurring when dissimilar metals come into contact," "the mechanism of crevice corrosion and its countermeasures," and "other corrosion phenomena related to contact corrosion." Please take a moment to read it. 【Contents】 ■ Corrosion occurring when dissimilar metals come into contact ■ The presence of water further accelerates corrosion ■ The mechanism of crevice corrosion and its countermeasures ■ Other corrosion phenomena related to contact corrosion 【Technical Show Yokohama 2023 (44th Industrial Technology Exhibition)】 ■ Date: February 1 (Wednesday) to 3 (Friday), 2023, 10:00 AM to 5:00 PM ■ Location: Pacifico Yokohama, Exhibition Halls A, B, C ■ Booth Number: Hall A, Zone B18, Booth 2 ■ URL: https://www.tech-yokohama.jp/ *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials
• Steel
• stainless

This document introduces thin sheet press processing that leverages the plastic working capabilities of metal materials. It covers topics such as "judgment, consideration, and response to whether the design is suitable for the workability of metal materials," as well as explanations of "shearing" and "bending" processes. Consulting with us before formal product design can lead to the creation of products with excellent productivity and rational designs. Additionally, discussing during the design phase allows for the possibility of rational mold design using processing methods that are feasible for the plastic working capabilities of metals. We encourage you to read it. [Contents] ■ Considerations for selecting metal materials ■ Judgment, consideration, and response to whether the design is suitable for the workability of metal materials ■ Shearing processing ■ Bending processing ■ Drawing processing *For more details, please refer to the PDF document or feel free to contact us.

• Press Dies

This document introduces the selection of metal materials according to their intended purpose. It explains the basic uses of metals in terms of strength and corrosion resistance. Furthermore, it discusses specialized uses of metals, highlighting cases where using a specific metal is the most rational choice, with electromagnetic wave shielding as a representative application. When selecting metal materials, it is believed that fundamental considerations in product design and specific circumstances inevitably dictate the choices made. However, why not take a moment to reflect on the appropriate selection of metal materials based on their intended purpose? We encourage you to read on. [Contents] ■ Strength ■ Corrosion Resistance ■ Specialized Uses of Metals *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials

At this point, metal products are making significant contributions to the 17 themes of the SDGs. This document includes a table presenting the theme "Contribution of Steel to the SDGs" from the World Steel Association, an international industry organization for the steel industry. It shows the themes contributing to each of the SDG principles. By comparing the principles and themes, one can understand how the physical properties of steel materials contribute to the SDGs. Additionally, it discusses the use of human-friendly metal materials. We encourage you to read it. [Contents] ■ Table 1 "Contribution of Steel to the SDGs" ■ Use of metals contributing to the SDGs ■ Table 2 Current status and characteristics comparison of antimicrobial metal materials *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials

When designing metal products, it is sometimes possible to improve the overall performance of the product by selecting different metal materials according to the intended functions for each part. By combining metals used in areas that require strength and rigidity with those that possess excellent physical and chemical properties, a product can be completed that has rational performance suited to its functions. Of course, from the perspective of rational and economical design, the use of a single metal is common. For more details, please download and view the catalog. [Contents] 1. Use of combinations of dissimilar metals 2. Galvanic corrosion of dissimilar metals 3. Crevice corrosion 4. Other corrosion phenomena related to galvanic corrosion *For more information, please refer to the PDF document or feel free to contact us.

• Technical and Reference Books
• Contract manufacturing
• Processing Contract

The materials can be viewed immediately from the "Download" button. Understanding the physical and chemical properties of metals leads to the creation of high-quality products. Additionally, as various movements aimed at preserving the global environment, such as "sustainable society" and "carbon neutrality," become more active, there is a strong demand for the appropriate design of metal products. It is very important to understand the corrosion phenomena of metals for the creation of products tailored to specific purposes, such as "products that are resistant to rust and durable," "products that are easy to recycle," and "products that we hope will eventually rust and return to nature." [Types of Corrosion Listed] ■ Uniform Corrosion ■ Localized Corrosion - Pitting Corrosion - Galvanic Corrosion - Crevice Corrosion ■ Other phenomena associated with corrosion - Stress Corrosion Cracking - Intergranular Corrosion - Corrosion Fatigue - Erosion *Please feel free to contact us regarding the content of the materials or our technologies.

• Other metal materials

This is a very rare tangram made of metal. A wonderful puzzle has been created. It has become a remarkable item that allows you to feel the metal processing technology that supports Japanese industry in a more familiar way. The "Metagram" is a puzzle that allows you to enjoyably enhance your brain level through daily repetition. It improves spatial awareness, dexterity, perseverance, and a sense of achievement, in other words, it makes you smarter!

• others

This document was created with the hope that it will serve as an opportunity to reconsider whether the metal materials you are currently using are suitable for achieving the SDGs, as efforts towards their attainment are becoming more active. Proper material selection impacts not only cost and quality but also environmental burden. We hope you will take a look at this document and find it useful. [Contents (excerpt)] - Stainless steel used for expected corrosion resistance - Methods using titanium - Stainless steel for springs - Deep drawing using non-magnetic steel - Roofing with stainless steel *This document can be viewed immediately by clicking the download button.

• Other metal materials

1. Leaf Spring 2. Stacked Leaf Spring 3. Disc Spring 4. Coil Spring At Kyowa Hearts, we specialize in thin plate spring products, which are difficult to assess in performance through desktop simulations, focusing on spring characteristics, sliding properties, and durability. From prototyping to mass production of leaf springs, when time is limited, please utilize our proposal capabilities, material procurement capabilities, and short delivery response capabilities. For the production of blank shapes (cut shapes) during prototyping, we select from fine laser processing (beam diameter 0.03), wire electrical discharge machining, etching processing, and press processing using simple molds, considering precision and quantity. We strive to achieve short delivery times and low costs by using as many of our extensive hand-held temporary molds as possible for bending processing. From the early stages of development, we aim to be a good partner in your development by interpreting the appeal requirements of leaf spring components and proposing the optimal materials and methods.

• Spring

Our company specializes in press processing using precision progressive dies. We have a proven track record in product development that leverages the characteristics of magnesium, and we are capable of handling thin sheet press processing, which requires advanced technology. We provide advice and support across all manufacturing processes, from technical information to design points and surface treatment methods. We are currently distributing materials that explain the characteristics of magnesium alloys and the benefits gained from their use in products. **Characteristics of Press Products Made from Magnesium Alloys** - Lightweight and strong products can be created - Excellent vibration absorption properties - Outstanding dent resistance - Electromagnetic wave shielding properties - Heat dissipation characteristics - Recyclability *For detailed explanations of each characteristic, please refer to the materials available for "PDF Download." Feel free to contact us with any inquiries.*

• alloy

Rational material selection enables the design of products that are easy to manufacture, leading to reduced costs due to fewer processes, improved productivity during mass production, and enhanced reliability and durability of the products. Designs with high forming difficulty will increase material and processing costs. Indicators of material properties for evaluating materials suitable for stamping include tensile strength, yield strength, elongation, hardness, Erichsen value, limiting drawing ratio, and conical cup value. However, two specific characteristic values that can directly evaluate formability are as follows: 1. The n-value representing work hardening characteristics 2. The r-value (Rankford value) representing anisotropy The n-value and r-value are characteristic values that directly relate to the quality of actual stamping processes, and this evaluation allows for the selection of appropriate materials. *For more details, please download the PDF or contact us.*

• Contract manufacturing

In the process of spring design, once the stress level of the required material is determined, it is necessary to select a material that possesses those characteristics, and an understanding of the properties of the material is crucial. Table of Contents 1. Elements necessary for material selection 2. Mechanical property data by material 3. [For reference] Mechanical properties of stainless spring materials according to JIS standards *For more details, please download the PDF or contact us.

• Circuit board design and manufacturing

Many items that people touch when going out... Train handles, handrails, elevator buttons, vending machine buttons, doorknobs, thumbturns, and so on, are touched by MagClean on your behalf. MagClean plays an active role in various scenes from going out to returning home. Magnesium is regarded as the next-generation practical metal, and our company is researching and developing its practical application technology. Magnesium is the lightest practical metal that is stable on Earth and in the air. MagClean utilizes the ultra-lightweight properties of magnesium, creating products so light that you might forget you have them in your pocket when you go out. *For more details, please download the PDF or contact us.*

• alloy

It is not uncommon for mild, stain-like substances that are difficult to classify as rust to occur. To prevent these defects from arising in our products, we proceed with our work while keeping in mind the characteristics that lead to rust. This document introduces the conditions and environments under which various metals rust. We have succinctly summarized the conditions and environments that induce rust in various metal materials. Through the accumulation of knowledge and experience, we are well-versed not only in press processing technology but also in metal materials. Our team consists of professionals in metal processing. Would you like to solve your metal processing concerns together with us? Please feel free to contact us! *For more details, please download the PDF or contact us.*

• Processing Contract

A drawing die refers to a type of mold used in a processing method that creates various shapes of bottomed containers, such as cylinders, rectangular tubes, and cones, from a single thin sheet of metal. A characteristic feature of the formed products is that they have no seams. It is said to be the highest level of press processing. We would like to introduce a case study using our progressive die that has actually solved customer problems! Our products are primarily made using automatic press processing, ensuring stable quality, cost performance, and short delivery times, allowing us to meet customer demands. Please feel free to download it.

• fuse

This document is a compilation by our company, which specializes in precision mold design and manufacturing, regarding the causes and countermeasures for mold wear that occurs during mass production. To prevent situations such as "we need to regrind or modify various parts after entering mass production, resulting in unexpected cost increases," we provide essential information explained by troubles and mold materials. Countermeasures are also introduced, making the content useful for practical applications. 【Main Contents】 ■ Causes of poor mold durability ■ Seizing phenomena ■ Adhesive wear of stainless steel ■ Adhesive wear of titanium ■ Wear countermeasures (utilization of water-soluble lubricants, material selection), etc. *Detailed content can be viewed immediately via "PDF Download."

• Mold Design

"I was wondering where to order leaf springs." If that's the case, leave it to Kyowa Hearts! "But the materials from Kyowa Hearts are hard to read because they are filled with wall text!" Yes, I apologize for that. That's why we've added skilled editors to include a table of contents and summarize the text, making it incredibly easy to read. This time, since it's a collection of leaf spring examples, there are actually more photos than text, so you can read it quickly! Please leave your leaf springs to Kyowa Hearts! *For more details, please download the PDF or contact us.

• Other electronic parts
• Spring

We are currently offering a reference document titled "Material Knowledge for Automotive Parts," which introduces representative metal materials used in automotive components. It covers basic knowledge about materials for engine parts such as cylinder heads and crankshafts, as well as wipers and steering components. The content is designed to be easy to understand for beginners. 【Contents (Excerpt)】 ■ Engine-related parts (cylinder heads, valve-related parts, etc.) ■ Electrical components ■ Equipment components ■ Steering components ■ Conclusion - Future Automotive Parts Materials *For more details, please download the PDF or contact us.

• Drive system parts

"What are the functions of the parts required by the customer? Where is precision truly needed?" We will ask the customer's design representatives and our sales representatives will propose and consult on the machining characteristics and limits of the materials to be processed. *For more details, please download the PDF or contact us.*

• Processing Contract

In product development, what measures are necessary to avoid failures as much as possible? First, consider the molds required for the product and carefully think about whether the dimensions and shape of the product will satisfy customer needs. Next, it is essential to scrutinize the information necessary for mold processing and product assembly and accurately convey it to the responsible engineers. In other words, detailed specifications, design drawings, and mold blueprints are required. It goes without saying that it is important to place orders with vendors who have extensive experience in prototype production and possess a wealth of know-how. *For more details, please download the PDF or contact us.*

• Press Dies

"MagClean" is a product that utilizes the excellent antibacterial properties of silver and a lightweight magnesium alloy. It is useful in various situations from leaving home to returning, as it can be used to touch items such as train handrails, handrails, elevator buttons, vending machine buttons, doorknobs, and thumbturns, acting as a substitute for hands. Additionally, leveraging the ultra-lightweight characteristics of magnesium, we have created a product so light that you might forget you have it in your pocket while out. 【Features】 ■ Touchless ■ Touches various items that many people come into contact with while out, acting as a substitute for hands ■ Useful in various situations from leaving home to returning ■ Incorporates our technology to realize outstanding features and excellent performance * A PDF is available that explains the "Utilization Technology of Magnesium Alloys" and "Coating Technology that Exhibits Antibacterial Effects"! * For more details, please refer to the PDF document or feel free to contact us.

• Other safety and hygiene products

This document contains know-how for manufacturing products using stainless steel as a spring material. It provides detailed explanations on points regarding the use of stainless steel as spring material, such as "selecting materials based on strength levels" and "determining the feasibility of processing by checking the bending characteristics of the material at the finishing level." Additionally, it introduces joining techniques such as "physical joining" and "welding." We encourage you to read it. [Contents] ■ The basics of stainless steel involve adding chromium to provide corrosion resistance. ■ Material selection is based on strength levels. ■ The feasibility of processing is determined by checking the bending characteristics of the material at the finishing level. ■ Other related technologies. *For more details, please refer to the PDF document or feel free to contact us.

• Spring

"Designing Springs and Material Selection That You Can't Ask Now" is a document created by our company, which specializes in processing leaf springs, based on our know-how regarding the properties of materials. It introduces the key points for material selection, including the necessary elements and the selection process based on mechanical properties. This document is useful for situations such as, "I have inherited past drawings, but I don't know how to make the necessary springs," or "I don't know what criteria to use for selecting materials." 【Contents】 ■ Elements necessary for material selection ■ Selection process based on mechanical property data ■ Characteristic values of representative materials *You can view it immediately via PDF download. Please feel free to consult us about prototypes or material selection based on drawings or some parts.

• Spring

This is a collection of solution case studies from Kyo-Wa Hearts Co., Ltd., which handles precision and fine pressing, leaf spring processing, and everything from prototypes to mass production. It includes information on various connection terminals, examples of small diameter drawing, and key points for mold manufacturing. Additionally, the Q&A section answers frequently asked questions such as "About good contractors" and "Materials that can be processed." 【Included Items】 ■ Proof of stable product quality ■ Examples of small diameter drawing processing ■ Fine bending and punching products ■ Q&A Frequently Asked Questions *For more details, please refer to the PDF materials or feel free to contact us.

• Other machine elements

With the advancement of IT, we often find ourselves reading articles and news on computers and smartphones. However, even though we want to input information into our heads, it just doesn't seem to stick... On the other hand, doesn't it feel like information compiled on paper is easier to absorb? (Books and academic papers are typical examples.) In fact, there are certainly many cases where working with paper is faster than with a computer. The "Nuke" file is designed to leverage the strengths of both "IT" and "paper"! **Feature 1** Extracting documents bound in a file has always been a task that no one wants to do. This "Nuke" is a revolutionary patented file that solves that hassle. **Feature 2** You can easily insert or remove filed documents from anywhere in the middle by simply pulling a lever. There's no need for a specific place to open the file. You can take documents in and out while the file is standing on your lap or elsewhere. The Nuke file, which allows you to quickly pull out and put away necessary documents without stress, is highly recommended. We kindly ask you to consider adopting the Nuke file to contribute to increased productivity in your office.

• Office supplies and stationery

According to a 2019 survey by MM Research Institute, the IoT adoption rate among small and medium-sized enterprises with fewer than 100 employees is only 9.5%. Furthermore, a 2018 survey by Nikkei Computer found that while many companies have adopted IoT, the success rate of these systems is only 52.8%. This suggests that many companies are implementing IoT in a top-down manner, and it is likely not being utilized effectively. While a top-down approach is not inherently bad, the original purpose of IoT implementation is to enhance productivity on the ground, innovate management, and ultimately lead to customer satisfaction. Without fostering IT literacy among frontline employees and a willingness to improve the workplace, it is quite challenging to establish and utilize IoT effectively. To those considering IoT implementation: why not adopt our original IoT system that starts small and expands according to your capabilities?

• Process Control System

"NOUQUE" is a file that allows you to easily insert and remove only the documents you want. You can easily insert and remove documents from anywhere in the filing by simply pulling a lever. There is no need for a separate space to open the file, allowing you to insert and remove materials while keeping the file upright on your lap or elsewhere. Returning documents to their original place is also easy, and bound documents won't fall out. 【Features】 ■ Easily retrieve only the documents you want ■ Simple to return to the original place ■ Bound documents won't fall out ■ File separation and disposal can be done effortlessly with one touch ■ A mechanism for aligning papers is built in, making it smooth to insert and remove papers *For more details, please download the PDF or contact us.

• Office supplies and stationery

At Kyo-Wa Hearts, we manufacture products from magnesium alloy sheets through press processing. Die-casting molds and casting equipment are not required. Magnesium alloy products can be made using standard press molds and press machines. We provide product manufacturing that leverages the excellent properties of magnesium alloys.

• Special Steel

At Kyo-Wa Hearts, we manufacture products using magnesium alloy sheets through press processing. There is no need for die-casting molds or casting equipment. Magnesium alloy products can be made using standard press molds and press machines. We offer product manufacturing that leverages the excellent properties of magnesium alloys. *For more details, please download the PDF or contact us.*

• Flight control parts

Press processing of thin, small, and slender leaf springs. From prototypes of contacts and leaf springs for mobile phones, computers, and connector parts to mass production processing through mold manufacturing. 【Features】 Thickness can start from 0.03 mm. *For more details, please download the PDF or contact us.

• Other machine elements

*Component integration leads to reduced assembly labor and, consequently, improved durability. Our company specializes in the complex shape processing of flat springs (especially contact springs) and can accommodate various shapes. *For more details, please download the PDF or contact us.

• Press Dies

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.

• Spring

As one of the challenges in new processing technologies, we are working on progressive die stamping. This allows us to respond to the expansion of our customers' development designs by offering stamping processing for items that require strength, in addition to traditional curling techniques. We conduct consistent production from mold design with responsibility, maintaining top-level precision and longevity of our products. For more details, please contact us or refer to our catalog.

• Processing Contract

When there is no time from prototype to mass production, please utilize Kyowa Hearts' proposal capabilities, material procurement capabilities, and short delivery response capabilities. For the production of blanks (cut shapes), we select from laser processing (beam diameter 0.03), wire electrical discharge machining, etching processing, and cutting using simple molds, considering precision and quantity. For bending processing, we will use as many of our abundant stock molds as possible to achieve short delivery times and low costs. For more details, please contact us or refer to our catalog.

• Processing Contract

The mold is broken! The dimensions are unstable! Burrs and dents won't settle down! I want to modify the mold! Kyowa Hearts will utilize the technology and experience we have cultivated so far, and with passion, we will meet our customers' expectations. There are no issues with manufacturing from other companies or overseas production. We also respond to requests such as "There are no mold drawings" or "The cause of defects is unclear." If you are in a hurry or cannot incur new costs, please feel free to consult with us. Our experienced staff will assist you. If you send us the mold, we will provide a quote by the end of the day following its arrival. Furthermore, it is also possible to carry out pressing for the first lot and deliver it simultaneously. *For more details, please contact us or refer to our catalog.

• Other molds

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