{"id":11452,"date":"2026-07-09T05:07:35","date_gmt":"2026-07-09T05:07:35","guid":{"rendered":"https:\/\/shincofab.com\/?p=11452"},"modified":"2026-07-09T05:07:36","modified_gmt":"2026-07-09T05:07:36","slug":"how-to-calculate-minimum-flange-length","status":"publish","type":"post","link":"https:\/\/shincofab.com\/ja\/how-to-calculate-minimum-flange-length\/","title":{"rendered":"\u677f\u91d1\u52a0\u5de5\u306b\u304a\u3051\u308b\u30d5\u30e9\u30f3\u30b8\u306e\u6700\u5c0f\u9577\u3055\u306e\u7b97\u51fa\u65b9\u6cd5"},"content":{"rendered":"\n

As a Lead Production Engineer at ShincoFab<\/a><\/strong>, I review sheet metal CAD files every day. Want to know a secret? The number one reason parts fail on our factory floor isn’t bad machinery. It is a short flange.<\/p>\n\n\n\n

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QUICK ANSWER: The Minimum Flange Length Formula<\/strong>
Minimum flange length is determined by the physical relationship between material thickness, bend radius, and the factory’s V-die width. Minimum Flange Length is calculated by adding half of the V-die width, the material thickness, and the bend radius together.<\/p>\n\n\n\n

(Formula: Minimum Flange = [V-Die Width \/ 2] + Material Thickness + Bend Radius)<\/p>\n<\/blockquote>\n\n\n\n

Over the last decade, I have watched press brakes turn hundreds of beautiful designs into expensive scrap because a designer guessed the flange length instead of doing the math. Last Tuesday, we had to halt production on a 500-piece aluminum enclosure order because the flanges were 2mm too short to span our bottom dies.<\/p>\n\n\n\n

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In this guide, I will show you how to replace rough estimations with exact engineering math. You will get the formula our operators use at ShincoFab to calculate minimum flange length for your specific material. We will break down how much money a bad bend costs, how aluminum differs from steel on our machines, and what to do if you need a super short flange.<\/p>\n\n\n\n

By the end of this article, you will know how to design highly formable, consistent parts.<\/p>\n\n\n\n

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