{"id":65939,"date":"2025-06-24T01:02:47","date_gmt":"2025-06-24T01:02:47","guid":{"rendered":"https:\/\/www.harsle.com\/?page_id=65939"},"modified":"2026-10-05T02:14:26","modified_gmt":"2026-10-05T02:14:26","slug":"spring-back-calculator","status":"publish","type":"page","link":"https:\/\/www.harsle.com\/fr\/spring-back-calculator\/","title":{"rendered":"Calculateur de retour \u00e9lastique"},"content":{"rendered":"

\"Spring\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n

This Spring Back Calculator helps you estimate the final bend angle and inner radius after elastic recovery during sheet metal bending. Enter key parameters to improve bending accuracy and reduce trial-and-error.<\/p>\n

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  1. Final Bend Angle<\/strong><\/li>\n<\/ol>\n

    Final Bend Angle = 180 \u2212 Bend Angle<\/p>\n

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    1. Spring Back Factor<\/strong><\/li>\n<\/ol>\n

      Spring Back Factor = Final Bend Angle \u00f7 Bend Angle<\/p>\n

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      1. Spring Back (Angle)<\/strong><\/li>\n<\/ol>\n

        Spring Back = Final Bend Angle \u2212 Bend Angle<\/p>\n

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        1. Final Inner Radius<\/strong><\/li>\n<\/ol>\n

          Final Inner Radius = Inner Radius + 0.00125 \u00d7 K-Factor \u00d7 Sheet Thickness \u00d7 Bend Angle<\/p>\n

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          • Material<\/strong>: Select the sheet material (e.g., steel, aluminum).<\/li>\n
          • Sheet Thickness (t)<\/strong>: Thickness of the metal sheet in mm.<\/li>\n
          • Inner Radius (R\u2080)<\/strong>: Initial design bend radius in mm.<\/li>\n
          • Bend Angle (A\u2080)<\/strong>: Intended bend angle in degrees (0\u2013180\u00b0).<\/li>\n
          • K-Factor<\/strong>: Ratio that defines neutral axis location (typically 0.3\u20130.5).<\/li>\n<\/ul>\n

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            \n Spring Back Calculator – Sheet Metal Bending Calculator<\/title><\/p>\n<style>\n .spring-calculator-container {\n max-width: 800px;\n margin: 0 auto;\n padding: 20px;\n font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Arial, sans-serif;\n color: #333;\n background: #fff;\n border-radius: 8px;\n box-shadow: 0 2px 8px rgba(0,0,0,0.1);\n }\n .spring-calculator-container h2 {\n color: #000;\n font-size: 1.8em;\n margin-bottom: 30px;\n text-align: center;\n font-weight: 600;\n }\n .calculator-section {\n padding: 0;\n width: 100%;\n box-sizing: border-box;\n }\n .spring-calculator-container form {\n padding: 0 20px;\n width: 100%;\n box-sizing: border-box;\n }\n .input-group {\n margin-bottom: 20px;\n position: relative;\n }\n .input-group label {\n display: block;\n margin-bottom: 8px;\n color: #333;\n font-weight: normal;\n font-size: 16px;\n }\n .input-wrapper {\n position: relative;\n display: flex;\n align-items: center;\n }\n .input-group input[type=\"number\"] {\n width: 100%;\n padding: 12px 16px;\n border: 1px solid #ddd;\n border-radius: 4px;\n font-size: 16px;\n color: #333;\n background: #fff;\n height: 45px;\n box-sizing: border-box;\n }\n .input-group input[type=\"number\"].has-unit {\n padding-right: 60px;\n }\n .unit-label {\n position: absolute;\n right: 0;\n padding: 0 16px;\n background: #F5F5F5;\n height: 45px;\n line-height: 45px;\n border: 1px solid #ddd;\n border-left: none;\n border-radius: 0 4px 4px 0;\n color: #666;\n font-size: 14px;\n }\n .spring-calculator-container .calculate-button {\n width: 100% !important;\n background-color: #007bff !important;\n color: white !important;\n padding: 12px !important;\n border: none !important;\n border-radius: 4px !important;\n cursor: pointer !important;\n font-size: 16px !important;\n font-weight: 700 !important;\n text-transform: uppercase !important;\n letter-spacing: 0.5px !important;\n margin: 20px 0 !important;\n text-decoration: none !important;\n display: block !important;\n line-height: normal !important;\n box-shadow: none !important;\n outline: none !important;\n }\n .spring-calculator-container .calculate-button:hover,\n .spring-calculator-container .calculate-button:focus,\n .spring-calculator-container .calculate-button:active {\n background-color: #007bff !important;\n color: white !important;\n border: none !important;\n text-decoration: none !important;\n box-shadow: none !important;\n outline: none !important;\n }\n .result-section {\n margin: 20px 20px;\n background: #ecf5ff;\n border-radius: 4px;\n padding: 20px;\n border: 1px solid #b3d7ff;\n width: calc(100% - 40px) !important;\n box-sizing: border-box !important;\n }\n .result-section h3 {\n color: #007bff;\n font-size: 18px;\n margin: 0 0 15px 0;\n padding: 0;\n font-weight: 500;\n width: 100% !important;\n }\n .result-value {\n display: flex;\n justify-content: space-between;\n align-items: center;\n margin: 10px 0;\n font-size: 16px;\n color: #333;\n padding: 10px 0;\n border-bottom: 1px solid #B3D7FF;\n width: 100% !important;\n }\n .result-value:last-child {\n border-bottom: none;\n margin-bottom: 0;\n padding-bottom: 0;\n }\n .result-value span {\n color: #007bff;\n font-weight: 500;\n }\n .unit-options {\n display: flex;\n gap: 80px;\n background: #f8f9fa;\n padding: 12px;\n border: 1px solid #ddd;\n border-radius: 4px;\n justify-content: center;\n align-items: center;\n height: 45px;\n box-sizing: border-box;\n }\n .radio-label {\n display: inline-flex;\n align-items: center;\n cursor: pointer;\n gap: 8px;\n }\n .radio-label input[type=\"radio\"] {\n margin: 0;\n width: 16px;\n height: 16px;\n }\n .radio-label span {\n font-size: 16px;\n color: #333;\n }\n .spring-calculator-container select {\n width: 100%;\n padding: 12px 16px;\n border: 1px solid #ddd;\n border-radius: 4px !important;\n font-size: 16px;\n color: #333;\n background: #fff;\n height: 45px;\n box-sizing: border-box;\n }\n @media (max-width: 768px) {\n .spring-calculator-container {\n padding: 15px;\n margin: 10px;\n }\n .spring-calculator-container h2 {\n font-size: 1.5em;\n }\n }\n <\/style>\n<p><\/head><br \/>\n<body><\/p>\n<h2>Spring Back Calculator<\/h2>\n<form id=\"springCalculatorForm\">\n <label>Unit<\/label><br \/>\n <label><br \/>\n <input type=\"radio\" name=\"unit\" value=\"mm\" checked><br \/>\n mm<br \/>\n <\/label><br \/>\n <label><br \/>\n <input type=\"radio\" name=\"unit\" value=\"inch\"><br \/>\n inch<br \/>\n <\/label><br \/>\n <label for=\"material\">Material<\/label><br \/>\n <select id=\"material\" required><option value=\"\">Select Material<\/option><option value=\"Mild Steel\" selected>Mild Steel<\/option><option value=\"Aluminum Soft\">Aluminum Soft<\/option><option value=\"Aluminum Half Hard\">Aluminum Half Hard<\/option><option value=\"Aluminum Hard\">Aluminum Hard<\/option><option value=\"Copper Soft\">Copper Soft<\/option><option value=\"Copper Half Hard\">Copper Half Hard<\/option><option value=\"Copper Hard\">Copper Hard<\/option><option value=\"Structural Steel\">Structural Steel<\/option><option value=\"Steel Hard\">Steel Hard<\/option><option value=\"Stainless Steel\">Stainless Steel<\/option><option value=\"Titanium Grade 2\">Titanium Grade 2<\/option><\/select><br \/>\n <label for=\"thickness\">Sheet Thickness<\/label><br \/>\n <input type=\"number\" id=\"thickness\" step=\"0.001\" required><br \/>\n mm<br \/>\n <label for=\"initialRadius\">Inner Radius<\/label><br \/>\n <input type=\"number\" id=\"initialRadius\" step=\"0.001\" required><br \/>\n mm<br \/>\n <label for=\"initialAngle\">Bend Angle<\/label><br \/>\n <input type=\"number\" id=\"initialAngle\" step=\"0.1\" required><br \/>\n \u00b0<br \/>\n <label for=\"kFactor\">K-Factor<\/label><br \/>\n <input type=\"number\" id=\"kFactor\" step=\"0.01\" required><br \/>\n <button type=\"submit\">Calculate<\/button><br \/>\n <\/form>\n<h3>Results<\/h3>\n<p> Final Inner Radius:<br \/>\n Final Bend Angle:<br \/>\n Spring Back Factor:<br \/>\n Spring Back:<br \/>\n<\/body><br \/>\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ce calculateur de retour \u00e9lastique vous aide \u00e0 estimer l'angle de pliage final et le rayon int\u00e9rieur apr\u00e8s la r\u00e9cup\u00e9ration \u00e9lastique pendant le traitement de la t\u00f4le.<\/p>","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-65939","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.harsle.com\/fr\/wp-json\/wp\/v2\/pages\/65939","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.harsle.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.harsle.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.harsle.com\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.harsle.com\/fr\/wp-json\/wp\/v2\/comments?post=65939"}],"version-history":[{"count":0,"href":"https:\/\/www.harsle.com\/fr\/wp-json\/wp\/v2\/pages\/65939\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.harsle.com\/fr\/wp-json\/wp\/v2\/media?parent=65939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}