High-precision press processing is an indispensable manufacturing technology in fields that demand extremely tight dimensional tolerances and stable machining accuracy. In particular, when precision beyond 1/100mm (0.01mm)—and even dimensional control at the 1/1000mm (0.001mm) level—is required, advanced capabilities in equipment, die design, and processing expertise are essential.

Kawamura Kikai Co., Ltd. has established a system capable of supporting such precision press processing, supplying components across a wide range of industries including automotive, railway, and household infrastructure sectors.

【Supported Processing Range and Main Specifications】
Examples of press processing achievements include:
・Deep drawing: Up to φ430mm diameter, maximum height 45mm, thickness 0.4–2.0mm
・Bending: Compatible with multiple geometries, thickness 0.2–6.0mm
・Blanking: Long parts up to 570mm, thickness 0.4–4.5mm
・Trimming: Supports a wide range of materials from thin to thick plates

Materials handled include general-purpose materials such as SPCC, SPCE, S35C, and SUS304, as well as conductive and high-mechanical-property materials such as C1720 and C5191, including spring materials.

【Die Manufacturing and Ensuring Processing Accuracy】
In high-precision press processing, die quality and maintenance systems are critical. Kawamura Kikai Co., Ltd. supports in-house and external die design and manufacturing, along with prompt inspection and repair of dies in operation.

To achieve both quality and productivity, the following techniques are utilized:
・Press trimming for height accuracy adjustment and improved productivity
・One-shot hole punching using cam mechanisms
・Ultra-fine piercing using press machines and precision dies

【Applications Requiring High Precision and Case Examples】
Automotive transmission internal components require machining accuracy at the 1/1000mm level.
The company has extensive mass production experience with high-precision parts and provides consultation from the conceptual design stage.

【Equipment and Inspection System】
Supporting high-precision press processing, more than 50 press machines ranging from 10t to 500t are in operation. Various production methods—including progressive die, single-shot, and transfer systems—are available.
Optimal production methods are proposed based on shape, volume, and cost considerations.

A comprehensive quality assurance system includes:
・Dimensional inspections using 3D measuring instruments, profile projectors, and proprietary inspection equipment
・Traceability ensured through IT systems
・Quality management compliant with ISO9001 (2015 edition)

【Business Advantages of High-Precision Press Processing】
Using high-precision components improves assembly accuracy and stabilizes final product performance. In recent years, as components become smaller and lighter, demand is increasing for suppliers capable of maintaining micron-level dimensional accuracy.
From the design stage, proposals are made for mass-production-friendly shapes and die specifications, contributing to cost optimization through VA/VE initiatives.

【Summary】
High-precision press processing is a key factor supporting product quality and performance. Maintaining stable dimensional accuracy at the 1/1000mm level requires integrated expertise in processing know-how, equipment capability, and quality assurance.
Kawamura Kikai Co., Ltd. supports complex processing such as deep drawing, blanking, and bending, providing one-stop service from prototyping to mass production. If you are facing challenges in developing high-precision components, consultation is welcome.

【Contact Information】
Kawamura Kikai Co., Ltd.
Head Office: 2-4 Shimizu-cho, Itabashi-ku, Tokyo 【Composite Division】
Hanazono Factory: 10 Kitane, Fukaya-shi, Saitama 【Metal Press Division】
Website: https://www.kawamura-kikai.co.jp
Inquiry / Quotation: https://www.kawamura-kikai.co.jp/contact/
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