ミヤマ精工 List of Products and Services

In this document, we introduce Miyama Seiko Co., Ltd.'s "Press Technology." We cover the use of simulation software, efforts in automation, IoT, and digitalization, as well as information on our in-house automatic equipment and various technical details. Our company is capable of providing comprehensive support from process design, mold design, mold manufacturing, prototyping, to mass production. Utilizing the know-how we have cultivated over many years, we deliver products with reliable and stable quality. [Contents (partial)] ■ Mold manufacturing ■ Proposal capabilities, design capabilities, know-how ■ Use of simulation software ■ Efforts in automation, IoT, and digitalization ■ Equipment introduction of in-house automatic devices *For more details, please download the PDF or feel free to contact us.

• Press Dies
• Processing Contract

Miyama Seiko Co., Ltd. conducts process design, mold design, manufacturing, prototyping, and mass production of metal parts for automobiles in a consistent system. We produce and develop transfer press processed products, precision progressive presses, precision cold forging, and secondary processed products, starting with mold manufacturing equipment (design and assembly are done in-house). In addition to our headquarters factory and Toyota factory, we also have a base in Thailand. Please feel free to contact us when you need our services. 【Business Contents】 ■ Process design, mold design and manufacturing ■ Consistent system for prototyping and mass production *For more details, please download the PDF or feel free to contact us.

• Press Dies
• Casting Machine
• Processing Contract

Precision cold forging is a processing method that applies force to metal at room temperature to deform it and create various shapes. Hot forging results in significant dimensional changes and a rough surface, necessitating surface finishing in subsequent processes. In contrast, cold forging achieves precise shapes and has the advantage of not requiring surface finishing. Our company specializes in shapes with long, narrow holes and can handle special materials that require high hardness and are difficult to process, such as stainless steel, ferritic, and martensitic materials. 【Features of Precision Cold Forging】 ■ A processing method that applies force to metal at room temperature to deform it and create various shapes ■ Achieves precise shapes without the need for surface finishing ■ Does not produce cutting scrap, leading to cost reduction and reduced environmental impact *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a development case of burr-free processing of fuel injector parts using precision cold forging. The aim of the development is to achieve penetration of fine deep holes through diameter reduction extrusion, eliminate cutting for the inner diameter of fine deep holes, and abolish punching in the middle section of fine deep holes. Additionally, our company specializes in creating long, thin hole shapes and can handle special materials that require hardness and are difficult to process, such as stainless steel, ferritic, and martensitic materials. [Development Aims] - New Method: Penetration of fine deep holes through diameter reduction extrusion - Improved Accuracy and Cleanliness: Elimination of cutting for the inner diameter of fine deep holes - Novelty: Abolition of punching in the middle section of fine deep holes *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a development case of cold forging of the difficult-to-process material SUS440C using precision cold forging. Even if there were ideas for performance improvement in customer products, it was difficult to realize them due to the complex shapes and challenges in machining. We developed products with hole diameter tolerance of ±0.015, coaxiality of Φ0.02, and roundness of 0.01 to 0.015, contributing to our customer's T company receiving a technology development award. [Development Objectives] ■ New Method: Cold forging of axially asymmetric complex shapes ■ Improvement in New Product Performance: World-class No. 1 performance for fuel injection systems ■ Novelty: Cold forging of martensitic stainless steel *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a development case of cold forging of fuel injector parts using precision cold forging (complex-shaped products). The aim of the development is the application of a through-hole method for small-diameter deep holes, reduction of cutting sections through the penetration of small-diameter deep holes, and cold forging of cylindrical products with hollow shafts. Additionally, our company specializes in creating shapes with long, thin holes and can handle special materials that require hardness and are difficult to process, including stainless steel, ferritic, and martensitic materials. [Development Objectives] - New Method: Application of the through-hole method for small-diameter deep holes - Yield Improvement: Reduction of cutting sections through the penetration of small-diameter deep holes - Novelty: Cold forging of cylindrical products with hollow shafts *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

Drawing processing is a method of shaping a single thin metal sheet into a tubular form. Compared to cutting processes, it minimizes material waste, reduces costs, and leaves no chips or shavings, resulting in fewer defective products. Our company specializes in sizes that fit in the palm of your hand, and with processing of up to 16 stages, we excel in multi-stage drawing and ultra-deep drawing. Additionally, we can now form thin tubes that were traditionally brazed into a single piece, contributing to cost reduction. 【Features of Drawing Processing】 - A method of shaping a single thin metal sheet into a tubular form - Minimizes material waste and reduces costs - Leaves no chips or shavings, resulting in fewer defective products *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a case study on the development of an integrated drawing of a diaphragm cover through drawing processing. The aim of the development was to reduce processing costs by eliminating the brazing process through tensile-compression composite molding and to achieve an integrated drawing of the pipe and cover. We performed the integrated drawing processing using a transfer press, followed by bending after the drawing process. Additionally, our company specializes in palm-sized products and is proficient in multi-stage processing with up to 16 stages, including multi-stage drawing and ultra-deep drawing. [Development Objectives] ■ New Method: Tensile-Compression Composite Molding ■ Cost Reduction: Lower processing costs by eliminating the brazing process ■ Novelty: Integrated drawing of the pipe and cover *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a development case of press forming of machined products through drawing processing. The development focused on aspects such as tensile-compression composite molding, process shortening through a review of processing methods, and non-cutting. Deep drawing processing was performed using a transfer press. Additionally, our company manufactures parts such as automotive injectors, fuel pumps, EGRs, and throttles, achieving high precision with inner diameter tolerances of 0.03 to 0.05 millimeters. [Development Objectives] ■ New Method: Tensile-Compression Composite Molding ■ Cost Reduction: Process Shortening through Review of Processing Methods ■ Novelty: Non-Cutting *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

The electromagnetic steel sheets used for winding coils were traditionally processed by sintering iron and then machining it. However, this process has been replaced by stacking thin metal sheets and forming them through clinching in a progressive die, which is known as laminated processing. By eliminating machining, costs are reduced by 40%. The laminated structure makes it easier to create magnetic fields, allowing for the production of higher-performance motors. Additionally, it is possible to stack insulators between each metal sheet. We can accommodate requests for shapes and the number of layers, achieving high precision. 【Features of Laminated Processing】 ■ Stacking thin metal sheets and forming them through clinching in a progressive die ■ Reducing costs by 40% by eliminating machining ■ Making it easier to create magnetic fields ■ Possibility of stacking insulators between each metal sheet *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a development case of press forming of machined parts through layered processing. The development focused on aspects such as rivet forming within the press, process shortening through a review of processing methods, and eliminating cutting. Layered processing was carried out using progressive dies. Our company can accommodate requests regarding shape and number of layers, and we can achieve high precision. [Development Objectives] ■ New Method: Layered Processing (Rivet forming within the press) ■ Cost Reduction: Process shortening through a review of processing methods ■ Novelty: Elimination of cutting *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

Differential thickness processing is a method that changes the thickness of a part of a component that has been press-formed. By achieving different wall thicknesses through integrated molding, which was traditionally done through cutting processes, we have successfully reduced costs. This method is used in applications such as sealing plates for mobile lithium batteries and solenoid components for transmissions. At our company, we have simplified the process and successfully reduced costs by integrally molding the explosion-proof valve of the sealing plate for mobile lithium-ion batteries. 【Features of Differential Thickness Processing】 ■ A method that changes the thickness of a part of a component that has been press-formed ■ Successful cost reduction by achieving different wall thicknesses through integrated molding ■ Adopted for sealing plates for mobile lithium batteries and solenoid components for transmissions *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a development case of press forming of machined products through differential thickness processing. The aim of the development is to shorten the process and eliminate cutting by reviewing the differential thickness forming and processing methods. We have achieved the "press forming of differential thickness cylinders" through process optimization. Please feel free to contact us when you need assistance. [Development Goals] ■ New Method: Differential Thickness Forming ■ Cost Reduction: Process Shortening through Method Review ■ Novelty: Elimination of Cutting *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a development case of press forming for lithium-ion battery cover plates through differential thick processing. The development focused on the integration of cold forging and pressing technology, process shortening through a review of processing methods, and integral processing. The safety valve and cover plate were formed as a single piece through pressing. Please feel free to contact us if you have any inquiries. 【Development Objectives】 ■ New Method: Integration of cold forging and pressing technology ■ Cost Reduction: Process shortening through a review of processing methods ■ Novelty: Integral processing *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

Our company is capable of not only cold forging and deep drawing processing but also consistent execution of subsequent processes such as machining and assembly. Forging + secondary processing / After cold forging the main body of the fuel flow pipe for injectors, we perform machining on the outer diameter and tip, removing any scratches or defects on the outer diameter, thus responding to various product processing requests. Please feel free to contact us when you have inquiries. [Responding to such requests] ■ Assembly / Using a production line that combines assembly and press processing machines, we perform assembly processing for products like hose clamps and finish them as completed products. ■ Forging + secondary processing / After cold forging the main body of the fuel flow pipe for injectors, we perform machining on the outer diameter and tip, removing any scratches or defects on the outer diameter. ■ Multi-forming / Magnetic circuit components (yokes) for accelerator pedal modules are manufactured by processing simultaneously from multiple directions, and we can accommodate various methods in metal processing. *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

Automotive small motor parts, magnet parts, etc.

• Other Auto Parts

This is an announcement from Miyama Seiko Co., Ltd. regarding "uneven thickness molding."

• Other machine elements

Automotive carburetor parts, throttle body parts, and others.

• Other Auto Parts

For precision horizontal twisting processing, please leave it to Miyama Seiko Co., Ltd.

• Other machine elements

Automotive fuel injection-related parts and other automotive-related parts.

• Other Auto Parts