【Importance of Horizontal Cutting】
Accurate horizontal trimming ensures proper assembly fit, sealing performance, and surface appearance. Instability can lead to gaps, misalignment in welding/caulking, poor sealing, and inconsistent appearance.

【Press Trimming as a Core Technology】
〈Die design determines performance〉
A press trimming die is not simply a sliding mechanism.
To achieve stable and precise horizontal cutting, advanced design is required, including:
・High-precision mechanism converting vertical motion to horizontal motion
・Sufficient rigidity during cutting
・Proper blade clearance design and durability
・Accurate positioning relative to the formed part

Kawamura Kikai Co., Ltd. has over 70 years of metal press experience, with in-house die design and manufacturing.
They support press trimming as a core technology for mass production up to t = 1.6 mm, including integration into transfer press lines.

【Equipment and Processing Capabilities】
The company operates 50 press machines ranging from 10 to 500 tons, supporting a wide range of processes including drawing, bending, blanking, trimming, caulking, and spot welding.
Press trimming is particularly effective for:
・Horizontal trimming of drawn openings
・Side trimming of cylindrical components
・Parts requiring strict height accuracy
・Edge finishing prior to welding
With in-house die manufacturing, rapid optimization of trim height and blade geometry is possible during prototyping, while also ensuring durability and maintainability for mass production.

【Comparison with Other Methods】
〈A mass-production solution without machining〉
Horizontal cutting of sidewalls can also be achieved through machining processes
such as turning or milling. However, for mass production, these approaches introduce:
・Increased processing time
・Higher fixture and tooling costs
・Longer lead times due to additional processes
In contrast, press trimming enables completion within the press process itself,
allowing process integration and cost optimization, while maintaining high precision in edge finishing.

【Key Considerations for Implementation】
Applicability of press trimming depends on factors such as part geometry, thickness, material, and required accuracy.
Key evaluation points include:
・Post-forming height variation
・Required edge accuracy
・Compatibility with downstream processes
・Production volume

Considering trimming methods at the early design stage leads to more manufacturable designs and stable mass production.

【Summary】
A press trimming die enables high-precision horizontal cutting by converting vertical press motion.
Also known as swing or oscillating trimming, it is key to improving edge quality in 3D formed parts.
It offers an effective solution to enhance accuracy and reduce height variation without machining.

【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/
Consultations on press trimming dies and oscillating trimming technology are available from the design stage.
Feel free to reach out for support in process design for mass production.