{"id":870,"date":"2026-08-31T14:53:30","date_gmt":"2026-08-31T12:53:30","guid":{"rendered":"https:\/\/macromillcnc.com\/?page_id=870"},"modified":"2026-08-31T18:31:04","modified_gmt":"2026-08-31T16:31:04","slug":"cnc-bolt-hole-circle-helical-milling-generator-macromill","status":"publish","type":"page","link":"https:\/\/macromillcnc.com\/cnc-bolt-hole-circle-helical-milling-generator-macromill\/","title":{"rendered":"CNC Bolt Hole Circle &amp; Helical Milling Generator | MACROMILL"},"content":{"rendered":"<main class=\"app\"><div class=\"shell\">\n<header class=\"topbar\"><div class=\"brand\"><img decoding=\"async\" class=\"brand-logo\" src=\"https:\/\/i0.wp.com\/macromillcnc.com\/wp-content\/uploads\/2026\/08\/ChatGPT-Image-Aug-31-2026-04_42_58-AM.png?resize=2172%2C724&amp;ssl=1\" alt=\"MACROMILL CNC\"><div><strong>MACROMILL BHC Logic Web<\/strong><small>Parametric cycle studio<\/small><\/div><\/div><div class=\"topbar-actions\"><div class=\"status\"><i><\/i> Local processing \u00b7 Preview ready<\/div><a class=\"wa-top\" href=\"https:\/\/chat.whatsapp.com\/Htae97asBiD14QiwMXjGJA\" target=\"_blank\" rel=\"noopener\" aria-label=\"Join the MACROMILL WhatsApp group\" title=\"Join WhatsApp group\"><span class=\"sr-only\">Join WhatsApp group<\/span><\/a><a class=\"wa-top\" href=\"https:\/\/wa.me\/27823701440\" target=\"_blank\" rel=\"noopener\" aria-label=\"Chat with MACROMILL on WhatsApp at +27 82 370 1440\" title=\"Chat on WhatsApp\"><span class=\"sr-only\">Chat on WhatsApp<\/span><\/a><\/div><\/header>\n<div class=\"workspace\">\n<section class=\"controls glass\"><div class=\"section-tag\">Cycle configuration<\/div><h1>Bolt-circle and helical milling<\/h1><p class=\"lede\">Generate genuine parameterized CNC macro logic and inspect the cutting motion with live material removal.<\/p>\n<div class=\"field-grid\">\n<div class=\"field full\"><label>Operation<\/label><div class=\"mode\"><button id=\"drillMode\">Drilling<\/button><button id=\"helixMode\" class=\"active\">Helical milling<\/button><\/div><\/div>\n<div class=\"field full\"><label>Controller<\/label><select id=\"controller\"><option>Fanuc<\/option><option>Haas<\/option><option>Mazak EIA<\/option><option>Mitsubishi<\/option><option>GSK<\/option><option>Siemens 828D \/ 840D<\/option><option>Fagor 8058\u20138070<\/option><option>Okuma OSP<\/option><option>Heidenhain TNC<\/option><\/select><\/div>\n<div class=\"field\"><label>Centre X<\/label><input id=\"cx\" type=\"number\" value=\"0\" step=\"0.1\"><\/div><div class=\"field\"><label>Centre Y<\/label><input id=\"cy\" type=\"number\" value=\"0\" step=\"0.1\"><\/div>\n<div class=\"field\"><label>BHC diameter<\/label><input id=\"pcd\" type=\"number\" value=\"160\" min=\"1\"><\/div><div class=\"field\"><label>Number of holes<\/label><input id=\"holes\" type=\"number\" value=\"6\" min=\"2\" max=\"100\"><\/div>\n<div class=\"field\"><label>Start angle<\/label><input id=\"angle\" type=\"number\" value=\"0\"><\/div><div class=\"field\"><label>Top Z<\/label><input id=\"topZ\" type=\"number\" value=\"2\"><\/div>\n<div class=\"field\"><label>Final Z depth<\/label><input id=\"depth\" type=\"number\" value=\"-15\"><\/div><div class=\"field\"><label>Retract above top<\/label><input id=\"safeZ\" type=\"number\" value=\"5\"><\/div>\n<div class=\"field helix\"><label>Finished hole \u00d8<\/label><input id=\"holeDia\" type=\"number\" value=\"20\" min=\"1\"><\/div><div class=\"field helix\"><label>Cutter \u00d8<\/label><input id=\"toolDia\" type=\"number\" value=\"12\" min=\".1\"><\/div>\n<div class=\"field helix\"><label>Helix pitch \/ rev<\/label><input id=\"pitch\" type=\"number\" value=\"2\" min=\".1\"><\/div><div class=\"field\"><label>Cutting feed<\/label><input id=\"feed\" type=\"number\" value=\"300\" min=\"1\"><\/div>\n<div class=\"field\"><label>Spindle RPM<\/label><input id=\"rpm\" type=\"number\" value=\"3000\" min=\"1\"><\/div><div class=\"field\"><label>Tool number<\/label><input id=\"tool\" type=\"number\" value=\"1\" min=\"1\"><\/div>\n<div class=\"field full\"><label>Units<\/label><select id=\"units\"><option value=\"mm\">Metric \u00b7 mm<\/option><option value=\"inch\">Imperial \u00b7 inch<\/option><\/select><\/div>\n<\/div><button class=\"primary\" id=\"generate\">Generate macro + preview<\/button><div class=\"usage\"><span id=\"uses\">10 free generations available<\/span><span>Processed offline<\/span><\/div><\/section>\n<section class=\"viewport glass\" id=\"viewport\"><div class=\"hud\"><div class=\"hud-group\"><div class=\"chip\">Mode <b id=\"hudMode\">Helix<\/b><\/div><div class=\"chip\">Controller <b id=\"hudController\">Fanuc<\/b><\/div><\/div><div class=\"hud-group\"><div class=\"chip\">X <b id=\"dx\">0.000<\/b><\/div><div class=\"chip\">Y <b id=\"dy\">0.000<\/b><\/div><div class=\"chip\">Z <b id=\"dz\">7.000<\/b><\/div><\/div><\/div><div class=\"gnomon-ui\" id=\"gnomonUi\" role=\"img\" aria-label=\"Rotating XYZ orientation gnomon: X red, Y green, Z blue\"><\/div><div class=\"view-tools\" aria-label=\"3D view controls\"><button id=\"panToggle\" type=\"button\">Pan view<\/button><button id=\"fixtureToggle\" type=\"button\" class=\"active\">Fixture<\/button><button id=\"stockToggle\" type=\"button\" class=\"active\">Workpiece<\/button><button id=\"toolToggle\" type=\"button\" class=\"active\">Tool<\/button><\/div><div class=\"transport\"><button id=\"reset\" aria-label=\"Reset simulation\">\u21ba<\/button><button id=\"play\" class=\"play\" aria-label=\"Play simulation\">\u25b6<\/button><input id=\"timeline\" type=\"range\" min=\"0\" max=\"1000\" value=\"0\" aria-label=\"Simulation timeline\"><select id=\"viewSelect\" aria-label=\"View selection\"><option value=\"iso\">ISO VIEW<\/option><option value=\"top\">TOP VIEW<\/option><option value=\"front\">FRONT VIEW<\/option><option value=\"right\">RIGHT VIEW<\/option><\/select><\/div><\/section>\n<section class=\"output glass\"><div class=\"out-head\"><div><div class=\"section-tag\">Generated macro program<\/div><h2>Controller output<\/h2><\/div><div class=\"badge\" id=\"profile\">FANUC \u00b7 PARAMETRIC MACRO<\/div><\/div><div class=\"metrics\"><div class=\"metric\"><span>Holes<\/span><b id=\"mPoints\">6<\/b><\/div><div class=\"metric\"><span>Path<\/span><b id=\"mPath\">0 mm<\/b><\/div><div class=\"metric\"><span>Macro blocks<\/span><b id=\"mBlocks\">0<\/b><\/div><\/div><pre class=\"code\" id=\"code\"><\/pre><div class=\"output-actions\"><button class=\"secondary\" id=\"copy\">Copy macro<\/button><button class=\"secondary\" id=\"download\">Download .NC<\/button><\/div><p class=\"warning\">Toolpath preview only. Review the generated macro against the machine builder\u2019s documentation and validate it with simulation, single-block operation and a controlled dry run.<\/p><\/section>\n<\/div><footer class=\"social-footer\" aria-label=\"Follow MACROMILL CNC\"><span>Follow MACROMILL CNC<\/span><div class=\"social-icons\"><a class=\"social-youtube\" href=\"https:\/\/www.youtube.com\/@MacromillCNC\" target=\"_blank\" rel=\"noopener\" aria-label=\"Follow MACROMILL CNC on YouTube\" title=\"YouTube\"><span class=\"sr-only\">YouTube<\/span><\/a><a class=\"social-instagram\" href=\"https:\/\/www.instagram.com\/macromill_cnc\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"Follow MACROMILL CNC on Instagram\" title=\"Instagram\"><span class=\"sr-only\">Instagram<\/span><\/a><a class=\"social-facebook\" href=\"https:\/\/www.facebook.com\/61570951982585\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"Follow MACROMILL CNC on Facebook\" title=\"Facebook\"><span class=\"sr-only\">Facebook<\/span><\/a><a class=\"social-linkedin\" href=\"https:\/\/www.linkedin.com\/company\/macromill\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"Follow MACROMILL CNC on LinkedIn\" title=\"LinkedIn\"><span class=\"sr-only\">LinkedIn<\/span><\/a><a class=\"social-tiktok\" href=\"https:\/\/www.tiktok.com\/@macromill_?_r=1&amp;_t=ZS-99MmSfxK5X6\" target=\"_blank\" rel=\"noopener\" aria-label=\"Follow MACROMILL CNC on TikTok\" title=\"TikTok\"><span class=\"sr-only\">TikTok<\/span><\/a><\/div><\/footer><\/div><\/main>\n<div class=\"lock\" id=\"lock\"><div class=\"lock-card\"><div class=\"section-tag\">Ten free generations complete<\/div><h2>Join CNC Automation Pro<\/h2><p>You have completed all ten free generations. Continue with CNC Automation Pro for unlimited programs, controller profiles and the complete MACROMILL CNC automation ecosystem.<\/p><a class=\"unlock\" href=\"https:\/\/payhip.com\/b\/9IpYU\" target=\"_blank\" rel=\"noopener\">Join CNC Automation Pro \u2192<\/a><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":279632934,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_wpcom_ai_launchpad_about_page":false,"_wpcom_ai_launchpad_gallery_page":false,"_wpcom_ai_launchpad_contact_page":false,"_wpcom_ai_launchpad_events_page":false,"_wpcom_ai_launchpad_video_page":false,"_wpcom_ai_launchpad_portfolio_piece":false,"footnotes":""},"class_list":["post-870","page","type-page","status-publish","hentry"],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/PhcvZP-e2","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/macromillcnc.com\/wp-json\/wp\/v2\/pages\/870","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/macromillcnc.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/macromillcnc.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/macromillcnc.com\/wp-json\/wp\/v2\/users\/279632934"}],"replies":[{"embeddable":true,"href":"https:\/\/macromillcnc.com\/wp-json\/wp\/v2\/comments?post=870"}],"version-history":[{"count":2,"href":"https:\/\/macromillcnc.com\/wp-json\/wp\/v2\/pages\/870\/revisions"}],"predecessor-version":[{"id":877,"href":"https:\/\/macromillcnc.com\/wp-json\/wp\/v2\/pages\/870\/revisions\/877"}],"wp:attachment":[{"href":"https:\/\/macromillcnc.com\/wp-json\/wp\/v2\/media?parent=870"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}