{"id":100078,"date":"2026-02-15T20:15:24","date_gmt":"2026-02-15T20:15:24","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100078"},"modified":"2026-07-12T01:53:56","modified_gmt":"2026-07-12T01:53:56","slug":"drilling-parameters","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/sr\/calculators\/drilling-parameters\/","title":{"rendered":"Metric Drilling Parameters | Sandvik Formula Set"},"content":{"rendered":"\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Metric Drilling Parameters\",\"description\":\"Calculate spindle speed,penetration rate,feed force,metal-removal rate,net power and torque with the Sandvik metric drilling formula set.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/drilling-parameters\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"dateModified\":\"2026-07-12\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true}<\/script>\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Metric drilling parameters\",\"item\":\"https:\/\/vibromera.eu\/calculators\/drilling-parameters\/\"}]}<\/script>\r\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\r\n<style>\r\n:root{--vc-bg:#f4f1ec;--vc-surface:#fff;--vc-surface-alt:#f8f6f2;--vc-ink:#1a1a1a;--vc-ink-secondary:#5a5650;--vc-ink-muted:#8a857e;--vc-accent:#c85a2a;--vc-accent-hover:#b04d22;--vc-accent-light:#fdf0ea;--vc-blue:#2a5c8c;--vc-blue-light:#eaf1f8;--vc-green:#2a7a4b;--vc-green-light:#eaf8ef;--vc-yellow:#a67c00;--vc-yellow-light:#fef9e8;--vc-border:#d9d4cc;--vc-border-light:#e8e4dd;--vc-shadow:0 1px 3px rgba(26,26,26,.06),0 4px 12px rgba(26,26,26,.04);--vc-radius:8px;--vc-radius-lg:12px;--vc-font:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--vc-mono:'JetBrains Mono','Consolas','Monaco',monospace;--vc-display:'Fraunces',Georgia,serif}\r\n.vc-calculator{font-family:var(--vc-font);font-size:15px;line-height:1.65;color:var(--vc-ink);max-width:960px;margin:0 auto;padding:20px 16px 40px;-webkit-font-smoothing:antialiased}.vc-calculator *,.vc-calculator *::before,.vc-calculator *::after{box-sizing:border-box}.vc-header{text-align:center;padding:48px 24px 40px;position:relative}.vc-header::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:80px;height:3px;background:var(--vc-accent);border-radius:2px}.vc-header-eyebrow{font-family:var(--vc-mono);font-size:11px;font-weight:500;letter-spacing:.15em;text-transform:uppercase;color:var(--vc-accent);margin:0 0 12px}.vc-header-title{font-family:var(--vc-display);font-size:clamp(24px,4vw,36px);font-weight:800;line-height:1.15;color:var(--vc-ink);margin:0 0 16px;letter-spacing:-.02em}.vc-header-subtitle{font-size:15px;color:var(--vc-ink-secondary);margin:0 auto 20px;max-width:600px}.vc-badges{display:inline-flex;gap:8px;flex-wrap:wrap;justify-content:center}.vc-badge{font-family:var(--vc-mono);font-size:11px;font-weight:500;padding:4px 10px;border-radius:4px;background:var(--vc-surface);border:1px solid var(--vc-border);color:var(--vc-ink-secondary)}.vc-card{background:var(--vc-surface);border:1px solid var(--vc-border);border-radius:var(--vc-radius-lg);box-shadow:var(--vc-shadow);overflow:hidden;margin-top:32px}.vc-form{padding:24px}.vc-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}@media(max-width:600px){.vc-form-grid{grid-template-columns:1fr}}.vc-field{display:flex;flex-direction:column}.vc-label{font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--vc-ink-secondary);margin-bottom:6px}.vc-label-hint{font-weight:400;text-transform:none;letter-spacing:0;color:var(--vc-ink-muted);font-size:11px}.vc-select,.vc-input{width:100%;padding:10px 12px;border:1.5px solid var(--vc-border);border-radius:6px;font-family:var(--vc-font);font-size:14px;color:var(--vc-ink);background:var(--vc-surface);transition:border-color .15s,box-shadow .15s}.vc-select{padding-right:36px;appearance:none;cursor:pointer;background-image:url(\"data:image\/svg+xml,%3Csvg xmlns='http:\/\/www.w3.org\/2000\/svg' width='16' height='16' fill='none' stroke='%235a5650' stroke-width='2'%3E%3Cpath d='M4 6l4 4 4-4'\/%3E%3C\/svg%3E\");background-repeat:no-repeat;background-position:right 10px center}.vc-select:focus,.vc-input:focus{outline:none;border-color:var(--vc-accent);box-shadow:0 0 0 3px rgba(200,90,42,.12)}.vc-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;padding-top:18px;border-top:1px solid var(--vc-border-light)}.vc-presets-label{font-family:var(--vc-mono);font-size:11px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--vc-ink-muted);width:100%;margin-bottom:2px}.vc-preset-btn{padding:5px 12px;font-family:var(--vc-font);font-size:12px;font-weight:500;border:1px solid var(--vc-border);border-radius:6px;background:var(--vc-surface-alt);color:var(--vc-ink-secondary);cursor:pointer;transition:all .15s}.vc-preset-btn:hover{border-color:var(--vc-accent);color:var(--vc-accent);background:var(--vc-accent-light)}.vc-results{border-top:1px solid var(--vc-border-light);background:var(--vc-surface-alt);padding:0;max-height:0;overflow:hidden;transition:max-height .5s cubic-bezier(.4,0,.2,1),padding .3s}.vc-results.vc-visible{max-height:2000px;padding:24px}.vc-results-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.vc-results-title{font-family:var(--vc-display);font-size:20px;font-weight:700;color:var(--vc-ink);margin:0}.vc-copy-btn{display:inline-flex;align-items:center;gap:5px;padding:6px 12px;border:1px solid var(--vc-border);border-radius:6px;background:var(--vc-surface);font-family:var(--vc-font);font-size:12px;font-weight:500;color:var(--vc-ink-secondary);cursor:pointer;transition:all .15s}.vc-copy-btn:hover{border-color:var(--vc-accent);color:var(--vc-accent)}.vc-result-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px}@media(max-width:500px){.vc-result-grid{grid-template-columns:1fr}}.vc-rcard{background:var(--vc-surface);border:1px solid var(--vc-border-light);border-radius:var(--vc-radius);padding:16px;transition:transform .2s}.vc-rcard:hover{transform:translateY(-1px)}.vc-rcard-primary{border-color:var(--vc-accent);border-width:2px;background:linear-gradient(135deg,#fdf6f2,var(--vc-surface));grid-column:1\/-1}.vc-rcard-label{font-family:var(--vc-mono);font-size:10px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--vc-ink-muted);margin-bottom:4px}.vc-rcard-value{font-family:var(--vc-mono);font-size:22px;font-weight:600;color:var(--vc-ink);line-height:1.2}.vc-rcard-primary .vc-rcard-value{font-size:30px;color:var(--vc-accent)}.vc-rcard-unit{font-size:14px;font-weight:400;color:var(--vc-ink-secondary)}.vc-section{margin-top:24px;border:1px solid var(--vc-border);border-radius:var(--vc-radius-lg);background:var(--vc-surface);box-shadow:var(--vc-shadow);overflow:hidden}.vc-section-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border:none;background:transparent;cursor:pointer;font-family:var(--vc-font);text-align:left;transition:background .15s}.vc-section-toggle:hover{background:var(--vc-surface-alt)}.vc-section-toggle-text{display:flex;align-items:center;gap:10px}.vc-section-icon{font-size:20px;line-height:1}.vc-section-title{font-family:var(--vc-display);font-size:18px;font-weight:700;color:var(--vc-ink);margin:0}.vc-section-chevron{width:20px;height:20px;color:var(--vc-ink-muted);transition:transform .3s;flex-shrink:0}.vc-section.vc-open .vc-section-chevron{transform:rotate(180deg)}.vc-section-body{max-height:0;overflow:hidden;transition:max-height .4s cubic-bezier(.4,0,.2,1)}.vc-section.vc-open .vc-section-body{max-height:20000px}.vc-section-inner{padding:0 24px 24px;border-top:1px solid var(--vc-border-light)}.vc-theory h3{font-family:var(--vc-display);font-size:17px;font-weight:700;color:var(--vc-ink);margin:28px 0 10px}.vc-theory h3:first-child{margin-top:20px}.vc-theory p{font-size:14px;color:var(--vc-ink-secondary);margin:0 0 10px}.vc-theory ul{font-size:14px;color:var(--vc-ink-secondary);margin:0 0 12px 18px;padding:0}.vc-theory li{margin-bottom:5px}.vc-formula-box{background:var(--vc-surface-alt);border:2px solid var(--vc-border);border-radius:6px;padding:14px 20px;text-align:center;margin:14px 0;overflow-x:auto}.vc-example-box{background:var(--vc-surface-alt);border:1px solid var(--vc-border-light);border-radius:6px;padding:16px;margin:14px 0}.vc-example-title{font-family:var(--vc-mono);font-size:13px;font-weight:600;color:var(--vc-accent);margin-bottom:8px}.vc-table{width:100%;border-collapse:collapse;margin:14px 0;font-size:13px}.vc-table th,.vc-table td{padding:10px 12px;border:1px solid var(--vc-border-light);text-align:left}.vc-table th{background:var(--vc-surface-alt);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--vc-ink-secondary)}.vc-table tr:nth-child(even){background:var(--vc-surface-alt)}.vc-faq-list{display:flex;flex-direction:column;gap:8px;margin-top:20px}.vc-faq-item{border:1px solid var(--vc-border-light);border-radius:6px;overflow:hidden}.vc-faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border:none;background:var(--vc-surface-alt);cursor:pointer;font-family:var(--vc-font);font-size:15px;font-weight:600;color:var(--vc-ink);text-align:left;transition:background .15s}.vc-faq-q:hover{background:#ede9e3}.vc-faq-chevron{width:16px;height:16px;color:var(--vc-ink-muted);flex-shrink:0;transition:transform .25s}.vc-faq-item.vc-open .vc-faq-chevron{transform:rotate(180deg)}.vc-faq-a{max-height:0;overflow:hidden;transition:max-height .35s}.vc-faq-item.vc-open .vc-faq-a{max-height:1200px}.vc-faq-a-inner{padding:14px 16px;border-top:1px solid var(--vc-border-light);font-size:14px;color:var(--vc-ink-secondary)}.vc-faq-a-inner p{margin:0 0 8px}.vc-faq-a-inner p:last-child{margin-bottom:0}.vc-related{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.vc-related-link{display:inline-block;padding:8px 16px;font-family:var(--vc-font);font-size:13px;font-weight:600;background:var(--vc-surface-alt);color:var(--vc-ink-secondary);border:1px solid var(--vc-border);border-radius:var(--vc-radius);text-decoration:none;transition:all .15s}.vc-related-link:hover{border-color:var(--vc-accent);color:var(--vc-accent);background:var(--vc-accent-light)}.vc-promo{margin-top:24px;padding:20px;background:linear-gradient(135deg,var(--vc-accent-light),var(--vc-surface));border:1px solid var(--vc-border);border-radius:var(--vc-radius-lg);display:flex;align-items:center;gap:16px}.vc-promo-text{flex:1;font-size:14px;color:var(--vc-ink-secondary)}.vc-promo-text strong{color:var(--vc-ink)}.vc-promo-link{padding:8px 20px;font-size:13px;font-weight:700;color:#fff;background:var(--vc-accent);border-radius:var(--vc-radius);text-decoration:none;white-space:nowrap;transition:background .15s}.vc-promo-link:hover{background:var(--vc-accent-hover)}.vc-footer{text-align:center;padding:32px 16px;font-size:13px;color:var(--vc-ink-muted)}.vc-footer a{color:var(--vc-accent);text-decoration:none}.vc-footer a:hover{text-decoration:underline}.vc-footer-links{margin-top:8px;font-size:12px}.vc-footer-links a{margin:0 8px}@media print{.vc-section-body{max-height:none!important}.vc-faq-a{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-faq-chevron,.vc-presets,.vc-promo{display:none!important}}\r\n<\/style>\r\n<div class=\"vc-calculator\" id=\"vc-drill\"><header class=\"vc-header\"><p class=\"vc-header-eyebrow\">Sandvik metric drilling equations<\/p><h1 class=\"vc-header-title\">Metric Drilling Parameters<\/h1><p class=\"vc-header-subtitle\">Calculate kinematics, feed force, material-removal rate, net cutting power and torque from one published metric formula set. Use toolmaker\/workpiece-specific inputs; outputs are planning estimates.<\/p><div class=\"vc-badges\"><span class=\"vc-badge\">Metric inputs<\/span><span class=\"vc-badge\">\u03bar explicit<\/span><span class=\"vc-badge\">No generic presets<\/span><\/div><\/header>\r\n<div class=\"vc-card\"><form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\"><div class=\"vc-form-grid\"><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-dia\">Drill diameter D<sub>c<\/sub> <span class=\"vc-label-hint\">(mm; &gt;0)<\/span><\/label><input class=\"vc-input\" id=\"vc-dia\" type=\"text\" inputmode=\"decimal\"><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-vc\">Cutting speed v<sub>c<\/sub> <span class=\"vc-label-hint\">(m\/min; &gt;0)<\/span><\/label><input class=\"vc-input\" id=\"vc-vc\" type=\"text\" inputmode=\"decimal\"><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-f\">Feed per revolution f<sub>n<\/sub> <span class=\"vc-label-hint\">(mm\/rev; &gt;0)<\/span><\/label><input class=\"vc-input\" id=\"vc-f\" type=\"text\" inputmode=\"decimal\"><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-kc\">Actual specific cutting force k<sub>c<\/sub> <span class=\"vc-label-hint\">(N\/mm\u00b2; &gt;0)<\/span><\/label><input class=\"vc-input\" id=\"vc-kc\" type=\"text\" inputmode=\"decimal\"><\/div><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-kr\">Entering angle \u03ba<sub>r<\/sub> <span class=\"vc-label-hint\">(degrees; &gt;0\u202690)<\/span><\/label><input class=\"vc-input\" id=\"vc-kr\" type=\"text\" inputmode=\"decimal\"><\/div><\/div><div style=\"padding:0 24px 24px\"><div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-source\">Tool\/workpiece data source, tool geometry\/material grade and operating assumptions<\/label><input class=\"vc-input\" id=\"vc-source\" type=\"text\" maxlength=\"300\"><\/div><p id=\"vc-error\" role=\"alert\" style=\"margin:.75rem 0 0;color:#b42318\"><\/p><div class=\"vc-warning-box\"><p style=\"margin:0\"><strong>Data gate:<\/strong> k<sub>c<\/sub> varies with material group, rake geometry and actual chip thickness. Cutting speed\/feed and \u03ba<sub>r<\/sub> must come from the actual tool\/workpiece recommendation; do not use a generic material preset.<\/p><\/div><\/div><\/form><div class=\"vc-results\" id=\"vc-results\"><div class=\"vc-results-head\"><h2 class=\"vc-results-title\">Planning result<\/h2><button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\">Copy<\/button><\/div><div class=\"vc-result-grid\"><div class=\"vc-rcard vc-rcard-primary\"><div class=\"vc-rcard-label\">Spindle speed n<\/div><div class=\"vc-rcard-value\" id=\"vc-r-rpm\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Penetration rate v<sub>f<\/sub><\/div><div class=\"vc-rcard-value\" id=\"vc-r-vf\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Feed force F<sub>f<\/sub> (approx.)<\/div><div class=\"vc-rcard-value\" id=\"vc-r-thrust\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Metal removal rate Q<\/div><div class=\"vc-rcard-value\" id=\"vc-r-q\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Net cutting power P<sub>c<\/sub><\/div><div class=\"vc-rcard-value\" id=\"vc-r-power\">\u2014<\/div><\/div><div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Cutting torque M<sub>c<\/sub><\/div><div class=\"vc-rcard-value\" id=\"vc-r-torque\">\u2014<\/div><\/div><\/div><p id=\"vc-r-note\" style=\"margin:0;color:var(--vc-ink-secondary)\"><\/p><\/div><\/div>\r\n<div class=\"vc-section vc-open\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Published metric formula set<\/span><\/span><\/button><div class=\"vc-section-body\"><div class=\"vc-section-inner vc-theory\"><div class=\"vc-formula-box\">n=1000v<sub>c<\/sub>\/(\u03c0D<sub>c<\/sub>); &nbsp; v<sub>f<\/sub>=f<sub>n<\/sub>n<\/div><div class=\"vc-formula-box\">F<sub>f<\/sub>\u22480.5k<sub>c<\/sub>(D<sub>c<\/sub>\/2)f<sub>n<\/sub>sin\u03ba<sub>r<\/sub>; &nbsp; Q=v<sub>c<\/sub>D<sub>c<\/sub>f<sub>n<\/sub>\/4<\/div><div class=\"vc-formula-box\">P<sub>c<\/sub>=v<sub>c<\/sub>D<sub>c<\/sub>f<sub>n<\/sub>k<sub>c<\/sub>\/(240\u00d710\u00b3); &nbsp; M<sub>c<\/sub>=P<sub>c<\/sub>30\u00d710\u00b3\/(\u03c0n)<\/div><p>The <a href=\"https:\/\/cdn.sandvik.coromant.com\/files\/sitecollectiondocuments\/services\/metal-cutting-e-learning\/formulas-and-definitions\/formulas-and-deinitions-for-drilling-metric-enu.pdf\" target=\"_blank\" rel=\"noopener\">Sandvik Coromant metric drilling formula sheet<\/a> defines these inputs and output units. Sandvik\u2019s <a href=\"https:\/\/www.sandvik.coromant.com\/da-dk\/knowledge\/materials\/specific-cutting-force\" target=\"_blank\" rel=\"noopener\">specific-cutting-force guidance<\/a> explains that k<sub>c<\/sub> changes with material, rake and chip thickness.<\/p><p><a href=\"https:\/\/www.kennametal.com\/qa\/en\/resources\/engineering-calculators\/holemaking-calculators\/torque--thrust--and-power.html\" target=\"_blank\" rel=\"noopener\">Kennametal\u2019s tool-specific drilling calculator<\/a> likewise describes its outputs as theoretical planning values whose actual results vary. This page does not claim ISO compliance or machine\/tool capacity approval.<\/p><div class=\"vc-warning-box\"><p style=\"margin:0\"><strong>Corrections to the former calculator:<\/strong> net power was 1000\u00d7 too high because N\u00b7mm-to-N\u00b7m and W-to-kW conversions were incomplete. Feed force omitted sin\u03ba<sub>r<\/sub> and a factor 1\/2 from D<sub>c<\/sub>\/2. Unsourced cutting presets, k<sub>c<\/sub> table and generic FAQ ranges were removed.<\/p><\/div><\/div><\/div><\/div><footer class=\"vc-footer\"><p>\u00a9 2024\u20132026 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a><\/p><p>Published metric planning equations; verify actual tool and machine limits. Scientific review: July 2026.<\/p><\/footer><\/div>\r\n<script>(function(){'use strict';function $(i){return document.getElementById(i)}function raw(v){var s=String(v).trim().replace(\/\\s+\/g,'');if(!\/^[+]?(?:\\d+(?:[.,]\\d*)?|[.,]\\d+)$\/.test(s))return NaN;return Number(s.replace(',','.'))}function pos(v){var x=raw(v);return Number.isFinite(x)&&x>0?x:NaN}function fmt(x){var y=Math.round(x*1e9)\/1e9;if(Math.abs(x-y)<=2e-12*Math.max(1,Math.abs(x)))x=y;return Number(x.toPrecision(12)).toString()}function clearResult(){['vc-r-rpm','vc-r-vf','vc-r-thrust','vc-r-q','vc-r-power','vc-r-torque'].forEach(function(id){$(id).textContent='\u2014'});$('vc-r-note').textContent='';$('vc-results').classList.remove('vc-visible')}function calc(){var D=pos($('vc-dia').value),vc=pos($('vc-vc').value),fn=pos($('vc-f').value),kc=pos($('vc-kc').value),kr=pos($('vc-kr').value),source=$('vc-source').value.trim(),any=Array.from(document.querySelectorAll('#vc-form input')).some(function(x){return x.value.trim()}),bad=![D,vc,fn,kc,kr].every(Number.isFinite)||kr>90;if(bad||!source){clearResult();$('vc-error').textContent=any?'Enter all positive unsuffixed metric values, \u03bar > 0 to 90\u00b0, and the actual tool\/workpiece data basis.':'';return}var n=1000*vc\/(Math.PI*D),vf=fn*n,rad=kr*Math.PI\/180,Ff=0.5*kc*(D\/2)*fn*Math.sin(rad),Q=vc*D*fn\/4,Pc=vc*D*fn*kc\/(240e3),Mc=Pc*30e3\/(Math.PI*n);$('vc-error').textContent='';$('vc-r-rpm').textContent=fmt(n)+' r\/min';$('vc-r-vf').textContent=fmt(vf)+' mm\/min';$('vc-r-thrust').textContent=fmt(Ff)+' N';$('vc-r-q').textContent=fmt(Q)+' cm\u00b3\/min';$('vc-r-power').textContent=fmt(Pc)+' kW';$('vc-r-torque').textContent=fmt(Mc)+' N\u00b7m';$('vc-r-note').textContent='Basis: '+source+' | Theoretical planning values;verify actual machine\/tool load.';$('vc-results').classList.add('vc-visible');var u=new URL(location),vals={diameter_mm:$('vc-dia').value.trim().replace(',','.'),cutting_speed_m_min:$('vc-vc').value.trim().replace(',','.'),feed_mm_rev:$('vc-f').value.trim().replace(',','.'),specific_cutting_force_n_mm2:$('vc-kc').value.trim().replace(',','.'),entering_angle_deg:$('vc-kr').value.trim().replace(',','.'),data_basis:source};Object.keys(vals).forEach(function(k){u.searchParams.set(k,vals[k])});history.replaceState(null,'',u.toString())}$('vc-form').addEventListener('input',calc);$('vc-copy-btn').addEventListener('click',function(){if(navigator.clipboard)navigator.clipboard.writeText($('vc-results').innerText)});document.querySelectorAll('.vc-section-toggle').forEach(function(b){b.addEventListener('click',function(){var s=this.closest('.vc-section');s.classList.toggle('vc-open');this.setAttribute('aria-expanded',s.classList.contains('vc-open'))})});var p=new URLSearchParams(location.search),map={diameter_mm:'vc-dia',cutting_speed_m_min:'vc-vc',feed_mm_rev:'vc-f',specific_cutting_force_n_mm2:'vc-kc',entering_angle_deg:'vc-kr',data_basis:'vc-source'};Object.keys(map).forEach(function(k){if(p.has(k))$(map[k]).value=p.get(k)});calc()})();<\/script>\r\n","protected":false},"excerpt":{"rendered":"<p>Calculate drilling speed, feed, force, removal rate, net power and torque with a coherent published metric formula set and explicit geometry.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100078","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/calculator\/100078","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":3,"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/calculator\/100078\/revisions"}],"predecessor-version":[{"id":102377,"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/calculator\/100078\/revisions\/102377"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/media?parent=100078"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/categories?post=100078"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sr\/wp-json\/wp\/v2\/tags?post=100078"}],"curies":[{"name":"\u0412\u041f","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}