{"id":4615,"date":"2025-11-05T14:54:23","date_gmt":"2025-11-05T06:54:23","guid":{"rendered":"https:\/\/www.opticalcutting.com\/?p=4615"},"modified":"2025-11-05T14:56:42","modified_gmt":"2025-11-05T06:56:42","slug":"optical-glass-processing","status":"publish","type":"post","link":"https:\/\/www.opticalcutting.com\/de\/optical-glass-processing\/","title":{"rendered":"How Endless Diamond Wire Minimizes Edge Chipping in Optical Glass Cutting\uff1f"},"content":{"rendered":"<h3 class=\"wp-block-heading\">Why Edge Chipping Is a Key Issue in Optical Glass Processing<\/h3>\n\n\n\n<p>In the production of high-precision optical components\u2014lenses, prisms, filters\u2014<strong>edge chipping<\/strong> is one of the most common causes of yield loss. During dicing or slicing, brittle materials like fused silica, borosilicate, and optical crystal substrates are prone to micro-cracks or flaking at the edges.<\/p>\n\n\n\n<p>Even small chips as little as 50\u2013100 \u03bcm can render an optic unusable, especially in AR\/VR optics, laser systems, and infrared modules. Chipped edges introduce:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Optical aberrations<\/li>\n\n\n\n<li>Mounting instability<\/li>\n\n\n\n<li>Surface contamination<\/li>\n\n\n\n<li>Increased polishing workload<\/li>\n<\/ul>\n\n\n\n<p>Traditional methods like <strong>blade sawing<\/strong>, <strong>laser scribing<\/strong>, or <strong>reciprocating diamond wire<\/strong> often introduce uneven forces or thermal shock\u2014both major causes of edge degradation.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Endless Diamond Wire: A Structural Advantage Against Chipping<\/h3>\n\n\n\n<p>Die <strong>endless diamond wire system<\/strong>, such as Vimfun\u2019s SGI series, uses a continuous closed-loop wire that moves in one direction at a <strong>precisely controlled tension and speed<\/strong>. This design directly reduces edge chipping through three mechanisms:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u2705 Vibration-Free Motion<\/h4>\n\n\n\n<p>Unlike reciprocating systems, endless motion removes the need to decelerate or reverse the wire.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>No shock transitions = no edge bursts<\/li>\n\n\n\n<li>Maintains constant cutting pressure<\/li>\n\n\n\n<li>Ideal for long, thin optical pieces<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u2705 Low Contact Force, High Stability<\/h4>\n\n\n\n<p>The wire applies <strong>distributed force<\/strong> along the contact area.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Less point stress = fewer fracture initiations<\/li>\n\n\n\n<li>Stable load = predictable fracture path<\/li>\n\n\n\n<li>Tension is actively controlled in real-time<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u2705 Clean, Cold Cutting<\/h4>\n\n\n\n<p>Deionized water or alcohol coolant keeps the material temperature low.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Avoids thermal cracks at the edges<\/li>\n\n\n\n<li>Reduces microfracture propagation<\/li>\n\n\n\n<li>Improves adhesion of coatings near edges<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Quantitative Edge Quality Improvement<\/h3>\n\n\n\n<p>Controlled tests comparing endless wire vs reciprocating wire on 1 mm thick borosilicate wafers (cut size: 20\u00d720 mm):<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Metric<\/th><th>Reciprocating Wire<\/th><th>Endloser Diamantdraht<\/th><th>Improvement<\/th><\/tr><\/thead><tbody><tr><td>Avg. Chip Depth<\/td><td>120 \u03bcm<\/td><td>22 \u03bcm<\/td><td>\u2193 81.7%<\/td><\/tr><tr><td>Edge Break Rate<\/td><td>12%<\/td><td>1.2%<\/td><td>\u2193 90%<\/td><\/tr><tr><td>Rework Time per Piece<\/td><td>8 min<\/td><td>2 min<\/td><td>\u2193 75%<\/td><\/tr><tr><td>Ra (Edge Surface)<\/td><td>0.38 \u03bcm<\/td><td>0.12 \u03bcm<\/td><td>Improved polishability<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>These differences scale further when cutting larger glass panels or when used for preform wafering in optical module lines.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Application Examples<\/h3>\n\n\n\n<p>Edge chipping suppression using endless wire is critical in:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Wafer-level optics<\/li>\n\n\n\n<li>Prism block dicing<\/li>\n\n\n\n<li>Polarizer substrate shaping<\/li>\n\n\n\n<li>Optical filter blanks<\/li>\n\n\n\n<li>Optical ceramics (e.g. spinel, sapphire)<\/li>\n<\/ul>\n\n\n\n<p>Multiple OEMs in the optics sector have replaced laser or saw-based slicing for edge-sensitive parts with SGI endless wire cutters, especially when downstream coating or bonding is involved.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Models for Different Optical Glass Processing Tasks <\/h2>\n\n\n\n<p>Vimfun offers a complete lineup of endless diamond wire saws tailored to specific optical glass processing needs:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2025\/05\/SGRI-20.webp\" alt=\"SGRI-20 CNC Ring Cutting Machine,Optical Glass Processing\" class=\"wp-image-4474\" style=\"object-fit:cover;width:581px;height:auto\" title=\"Die Vimfun-Glasschneideanlage ist eine perfekte Werkzeugmaschine f\u00fcr den Pr\u00e4zisionsschnitt\" srcset=\"https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2025\/05\/SGRI-20.webp 1000w, https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2025\/05\/SGRI-20-300x300.webp 300w, https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2025\/05\/SGRI-20-150x150.webp 150w, https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2025\/05\/SGRI-20-768x768.webp 768w, https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2025\/05\/SGRI-20-12x12.webp 12w, https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2025\/05\/SGRI-20-600x600.webp 600w, https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2025\/05\/SGRI-20-100x100.webp 100w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">High-accuracy SGRI-20 CNC ring cutting machine designed for efficient and consistent shaping.<\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/www.opticalcutting.com\/de\/sg-20-glass-wafer-slicing-machine\/\" data-type=\"product\" data-id=\"3775\" target=\"_blank\" rel=\"noreferrer noopener\">SG 20<\/a><\/strong> \u2013 Optimized for slicing thin glass sheets, wafers, and coated substrates with high parallelism.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.opticalcutting.com\/de\/sgr-20-prism-cutting-machine\/\" target=\"_blank\" data-type=\"product\" data-id=\"4023\" rel=\"noreferrer noopener\">SGR 20<\/a><\/strong> \u2013 Designed for high-precision prism cutting with adjustable vertical support and minimal edge deflection.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.opticalcutting.com\/de\/cnc-wire-cutting-machine\/\" target=\"_blank\" data-type=\"product\" data-id=\"4032\" rel=\"noreferrer noopener\"><strong>SGI 20<\/strong> <\/a>\u2013 Best suited for cutting microstructured or complex-profile optics, including coated glass with internal relief.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.semiconductorcutting.com\/product\/4-axis-cnc-diamond-wire-saw\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.semiconductorcutting.com\/product\/4-axis-cnc-diamond-wire-saw\/\" rel=\"noreferrer noopener\">SGRT 20<\/a><\/strong> \u2013 Supports compound motion with tilt and rotation capabilities, ideal for advanced 3D shaping and multi-angle optics.<\/li>\n<\/ul>\n\n\n\n<p>These models cover a wide range of brittle material slicing challenges, from basic sheet cutting to high-value, irregular optical components.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Abschluss<\/h3>\n\n\n\n<p>Edge integrity in optical glass cutting directly impacts performance, yield, and downstream processes.<\/p>\n\n\n\n<p><strong>Endless diamond wire technology<\/strong>, with its stable motion, cold cutting, and stress-controlled slicing, offers a robust solution to edge chipping\u2014particularly where optical precision matters most.<\/p>\n\n\n\n<p>Whether used in prototyping or mass production, it sets a new benchmark for clean, low-defect optical glass processing.<\/p>","protected":false},"excerpt":{"rendered":"<p>Why Edge Chipping Is a Key Issue in Optical Glass Processing In the production of high-precision optical components\u2014lenses, prisms, filters\u2014edge chipping is one of the most common causes of yield loss. During dicing or slicing, brittle materials like fused silica, borosilicate, and optical crystal substrates are prone to micro-cracks or flaking at the edges. Even [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[392],"tags":[637,638,635,636,639],"class_list":["post-4615","post","type-post","status-publish","format-standard","hentry","category-technical-articles","tag-brittle-material-cutting","tag-edge-chipping-reduction","tag-endless-diamond-wire","tag-precision-glass-slicing","tag-surface-quality-improvement"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.opticalcutting.com\/de\/wp-json\/wp\/v2\/posts\/4615","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.opticalcutting.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.opticalcutting.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.opticalcutting.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.opticalcutting.com\/de\/wp-json\/wp\/v2\/comments?post=4615"}],"version-history":[{"count":0,"href":"https:\/\/www.opticalcutting.com\/de\/wp-json\/wp\/v2\/posts\/4615\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.opticalcutting.com\/de\/wp-json\/wp\/v2\/media?parent=4615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.opticalcutting.com\/de\/wp-json\/wp\/v2\/categories?post=4615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.opticalcutting.com\/de\/wp-json\/wp\/v2\/tags?post=4615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}