{"id":42617,"date":"2021-05-12T21:34:03","date_gmt":"2021-05-13T01:34:03","guid":{"rendered":"https:\/\/www.novacam.com\/?p=42617"},"modified":"2022-01-21T16:47:41","modified_gmt":"2022-01-21T20:47:41","slug":"tapered-hole-measurement-replacing-bluing-gauges-with-fiber-based-optical-3d-metrology","status":"publish","type":"post","link":"https:\/\/www.novacam.com\/fr\/2021\/05\/12\/tapered-hole-measurement-replacing-bluing-gauges-with-fiber-based-optical-3d-metrology\/","title":{"rendered":"Mesure des trous coniques - remplacer les jauges de bouchons de bleuissement par une m\u00e9trologie optique 3D \u00e0 base de fibres optiques"},"content":{"rendered":"<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-f43c9381c89a3420456bdf6ab033114f\">\n.flex_column.av-atjwfd-f43c9381c89a3420456bdf6ab033114f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-f43c9381c89a3420456bdf6ab033114f av_two_third  avia-builder-el-0  el_before_av_hr  avia-builder-el-first  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-jkjvc3pl-d4f5853fb820e5d765a90180ea59e756'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h1>Tapered hole measurement &#8211; replacing bluing gauges with fiber-based optical 3D metrology<\/h1>\n<p>Published on May 12, 2021<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jpkjerim-282fb286dc0738d275cc4e4457850d52\">\n#top .hr.hr-invisible.av-jpkjerim-282fb286dc0738d275cc4e4457850d52{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-jpkjerim-282fb286dc0738d275cc4e4457850d52 hr-invisible  avia-builder-el-2  el_after_av_two_third  el_before_av_two_third'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-f43c9381c89a3420456bdf6ab033114f\">\n.flex_column.av-atjwfd-f43c9381c89a3420456bdf6ab033114f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-f43c9381c89a3420456bdf6ab033114f av_two_third  avia-builder-el-3  el_after_av_hr  el_before_av_one_half  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-jkufapef-793b0f69567d1431ac1dae4ae08b39e4'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Measuring tapered holes is a preoccupation in many high-precision industries. One traditional approach for inspecting tapered holes involves the use of bluing plug gauges.<\/p>\n<p>This article briefly describes the bluing process and then looks at an alternative approach for tapered hole inspection &#8211; one that is more automation-friendly and that provides high-precision measurements that go way beyond GO\/NO-GO capability.<\/p>\n<h2>What is the bluing process?<\/h2>\n<p>The bluing (or blue check) process checks the contact area between a male master taper a tapered hole, which is considered the female part of a mating taper fit.<\/p>\n<\/div><\/section><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-f43c9381c89a3420456bdf6ab033114f\">\n.flex_column.av-atjwfd-f43c9381c89a3420456bdf6ab033114f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-f43c9381c89a3420456bdf6ab033114f av_one_half  avia-builder-el-5  el_after_av_two_third  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jkufapef-793b0f69567d1431ac1dae4ae08b39e4'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>How bluing works in 3 steps<strong><br \/>\n<\/strong><\/h2>\n<ol>\n<li><strong>A male master taper is covered<\/strong> with a thin coat of <a href=\"https:\/\/en.wikipedia.org\/wiki\/Engineer%27s_blue\">Engineer&#8217;s blue<\/a> (Prussian blue pigment mixed with oil).<\/li>\n<li><strong>The male master taper is pressed into the tapered hole<\/strong>.<\/li>\n<li><strong>The master taper is withdrawn and inspected<\/strong> for indications of too much or too little taper and for indications of defects or out-of-roundness.<\/li>\n<\/ol>\n<p><strong>GO\/NO-GO decision: <\/strong>In areas where the master taper and the tapered hole surfaces came in contact, the blue ink is fully or partially transferred to the inside diameter (ID) of the hole.\u00a0\u00a0The estimated percentage of ink that transferred indicates how true to form the tapered bore is.\u00a0 Operators need considerable experience to be able to estimate the percent contact of the surfaces and judge whether the contact is adequate (e.g., 80% or 90% contact may be required for a GO answer).<\/p>\n<\/div><\/section><\/div><\/p>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-1906624284d21e64ed82fa8426343bc2\">\n.flex_column.av-atjwfd-1906624284d21e64ed82fa8426343bc2{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-1906624284d21e64ed82fa8426343bc2 av_one_half  avia-builder-el-7  el_after_av_one_half  el_before_av_two_third  flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-kmjnbhxv-193abc87107ef84d258ddbb159fc4e0b'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div id=\"attachment_42627\" style=\"width: 665px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.novacam.com\/wp-content\/uploads\/tapered-hole-measurement-with-bluing-methode.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-42627\" class=\"wp-image-42627 size-full\" src=\"https:\/\/www.novacam.com\/wp-content\/uploads\/tapered-hole-measurement-with-bluing-methode.jpg\" alt=\"Bluing process for tapered hole measurement with bluing gauges\" width=\"655\" height=\"614\" srcset=\"https:\/\/www.novacam.com\/wp-content\/uploads\/tapered-hole-measurement-with-bluing-methode.jpg 655w, https:\/\/www.novacam.com\/wp-content\/uploads\/tapered-hole-measurement-with-bluing-methode-300x281.jpg 300w, https:\/\/www.novacam.com\/wp-content\/uploads\/tapered-hole-measurement-with-bluing-methode-80x75.jpg 80w\" sizes=\"auto, (max-width: 655px) 100vw, 655px\" \/><\/a><p id=\"caption-attachment-42627\" class=\"wp-caption-text\">Bluing process &#8211; tapered hole measurement with bluing gauges &#8211; in 3 basic steps.<\/p><\/div>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-f43c9381c89a3420456bdf6ab033114f\">\n.flex_column.av-atjwfd-f43c9381c89a3420456bdf6ab033114f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-f43c9381c89a3420456bdf6ab033114f av_two_third  avia-builder-el-9  el_after_av_one_half  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jkufapef-793b0f69567d1431ac1dae4ae08b39e4'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>Example application: blue pins for inspection of tapered drill holes in assembly<\/h2>\n<p><strong>Blue pins<\/strong> are small bluing gauges used to inspect tapered holes just several mm in diameter.<\/p>\n<p>In some high-precision assembly plants, blue pins are used to inspect the quality of tapered holes that are drilled and reamed to accommodate specialty bolts (e.g., tapered shank bolts).\u00a0 In such holes, blue pins help identify defects such as out-of-round ID, cracks, burrs, gaps between drilled layers, or the approximate percentage of bearing surface.<\/p>\n<h2>How well does bluing work?<\/h2>\n<p>The bluing process provides a GO\/NO-GO answer for tapered hole inspection.\u00a0 It is used when the general fit of the male taper into the tapered hole matters but if exact measurements are not important.<\/p>\n<p>The answer to &#8220;How well does bluing works?&#8221; depends on the context. Here are some benefits and shortcomings of the bluing method, which remains useful and relevant for taper hole inspection in small-volume operations:<\/p>\n<ul>\n<li><strong>Benefits of bluing process:<\/strong> Simple GO\/NO-GO;\u00a0 economical in terms of equipment for small volume operations<\/li>\n<li><strong>Disadvantages: <\/strong>Manual technique; slow and labour-intensive; gives no quantitative measurement; evaluation is subjective &#8211; operator experience and technique affect the coverage estimation.<\/li>\n<\/ul>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-f43c9381c89a3420456bdf6ab033114f\">\n.flex_column.av-atjwfd-f43c9381c89a3420456bdf6ab033114f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-f43c9381c89a3420456bdf6ab033114f av_one_half  avia-builder-el-11  el_after_av_two_third  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jkufapef-793b0f69567d1431ac1dae4ae08b39e4'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>Beyond GO\/NO-GO what other aspects of tapered holes can be useful to measure?<\/h2>\n<p>Many high-precision part manufacturers require more detailed and precise measurements than those available with the bluing method.<\/p>\n<ul>\n<li>A good start are GD&amp;T (geometric dimensioning and tolerancing) parameters such as diameter measurements, taper angle, depth and conicity.<\/li>\n<li>More advanced parameters can include location and geometry of inner features (e.g. cross-holes) or concentricity of the tapered hole with respect to a bore that leads to it.<\/li>\n<li>Other aspects that can be measured are taper ID roughness, chatter, or defects such as gaps, burrs or cracks.<\/li>\n<\/ul>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-1906624284d21e64ed82fa8426343bc2\">\n.flex_column.av-atjwfd-1906624284d21e64ed82fa8426343bc2{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-1906624284d21e64ed82fa8426343bc2 av_one_half  avia-builder-el-13  el_after_av_one_half  el_before_av_three_fifth  flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-kmjnbhxv-193abc87107ef84d258ddbb159fc4e0b'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div id=\"attachment_42776\" style=\"width: 666px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.novacam.com\/wp-content\/uploads\/Taper-hole-measurements.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-42776\" class=\"wp-image-42776 size-full\" src=\"https:\/\/www.novacam.com\/wp-content\/uploads\/Taper-hole-measurements.jpg\" alt=\"Critical tapered hole measurements may include taper depth, diameter, taper angle, conicity, concentricity with other features, roughness, chatter, defects, and more. \" width=\"656\" height=\"558\" srcset=\"https:\/\/www.novacam.com\/wp-content\/uploads\/Taper-hole-measurements.jpg 656w, https:\/\/www.novacam.com\/wp-content\/uploads\/Taper-hole-measurements-300x255.jpg 300w, https:\/\/www.novacam.com\/wp-content\/uploads\/Taper-hole-measurements-80x68.jpg 80w\" sizes=\"auto, (max-width: 656px) 100vw, 656px\" \/><\/a><p id=\"caption-attachment-42776\" class=\"wp-caption-text\">Critical tapered hole measurements may include taper depth, diameter, taper angle, conicity, concentricity with other features, roughness, chatter, defects, and more.<\/p><\/div>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-f43c9381c89a3420456bdf6ab033114f\">\n.flex_column.av-atjwfd-f43c9381c89a3420456bdf6ab033114f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-f43c9381c89a3420456bdf6ab033114f av_three_fifth  avia-builder-el-15  el_after_av_one_half  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jkufapef-793b0f69567d1431ac1dae4ae08b39e4'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>Extra demands of more advanced manufacture facilities<\/h2>\n<p>Requirements for tapered hole inspection also increasingly include empirical (rather than subjective) measurements and automation of tapered hole measurements. For instance, high-precision assembly lines with robotized drill-and-fill fastening processes often require:<\/p>\n<ul>\n<li>Fully automated GO\/NO-GO inspection of drilled fastener holes<\/li>\n<li>Precise and quantified hole ID and countersink measurements for analysis and logging<\/li>\n<li>Rapid measurement analysis that can be fed back into the quality control process loop.<\/li>\n<\/ul>\n<p>For these kinds of requirements, manufacturers look for more advanced measurement approaches. And NOVACAM optical metrology systems often fit the bill.<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-f43c9381c89a3420456bdf6ab033114f\">\n.flex_column.av-atjwfd-f43c9381c89a3420456bdf6ab033114f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-f43c9381c89a3420456bdf6ab033114f av_one_half  avia-builder-el-17  el_after_av_three_fifth  el_before_av_one_half  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-jkufapef-793b0f69567d1431ac1dae4ae08b39e4'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>Optical fiber-based system for taper hole measurement<\/h2>\n<p>Novacam offers three non-contact 3D measurement systems for tapered hole measurement: the <a href=\"https:\/\/www.novacam.com\/fr\/products\/boreinspect-pour-la-metrologie-des-alesages-en-3d\/\">Syst\u00e8me BOREINSPECT<\/a>, the <a href=\"https:\/\/www.novacam.com\/fr\/products\/tubeinspect-pour-la-metrologie-de-lidentification-et-de-lodeur-des-tubes-en-3d\/\">Syst\u00e8me TUBEINSPECT<\/a> and the <a href=\"https:\/\/www.novacam.com\/fr\/products\/surfaceinspect-pour-3d-metrologie-dimensions-rugosite-epaisseur-2\/\">Syst\u00e8me SURFACEINSPECT<\/a>. All three are optical and fiber-based and offer manufacturers an advanced set of capabilities for tapered hole measurement. The choice of system depends on the application.<\/p>\n<p>In this article, we look at the BOREINSPECT system, which would be the system of choice for the above example of measuring tapered holes in robot drill-and-fill applications.<\/p>\n<p>The BOREINSPECT system uses a rotational scanning probe to easily reach inside each tapered hole to acquire its ID. As illustrated, scanning is done in a point-by-point manner (at a rate of up to 100,000 3D points per second).\u00a0 Scan pathways can be linear, circular, spiral, or a combination thereof.<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-1906624284d21e64ed82fa8426343bc2\">\n.flex_column.av-atjwfd-1906624284d21e64ed82fa8426343bc2{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-1906624284d21e64ed82fa8426343bc2 av_one_half  avia-builder-el-19  el_after_av_one_half  el_before_av_three_fifth  flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-jkufapef-793b0f69567d1431ac1dae4ae08b39e4'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div id=\"attachment_42676\" style=\"width: 673px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.novacam.com\/wp-content\/uploads\/tapered-hole-measurement-with-fiber-based-optical-3D-metrology-1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-42676\" class=\"wp-image-42676 size-full\" src=\"https:\/\/www.novacam.com\/wp-content\/uploads\/tapered-hole-measurement-with-fiber-based-optical-3D-metrology-1.jpg\" alt=\"Tapered hole measurement with optical fiber-based 3D metrology - in 2 steps\" width=\"663\" height=\"559\" srcset=\"https:\/\/www.novacam.com\/wp-content\/uploads\/tapered-hole-measurement-with-fiber-based-optical-3D-metrology-1.jpg 663w, https:\/\/www.novacam.com\/wp-content\/uploads\/tapered-hole-measurement-with-fiber-based-optical-3D-metrology-1-300x253.jpg 300w, https:\/\/www.novacam.com\/wp-content\/uploads\/tapered-hole-measurement-with-fiber-based-optical-3D-metrology-1-80x67.jpg 80w\" sizes=\"auto, (max-width: 663px) 100vw, 663px\" \/><\/a><p id=\"caption-attachment-42676\" class=\"wp-caption-text\">Tapered hole measurement with optical fiber-based 3D metrology &#8211; in 2 steps<\/p><\/div>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-f43c9381c89a3420456bdf6ab033114f\">\n.flex_column.av-atjwfd-f43c9381c89a3420456bdf6ab033114f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-f43c9381c89a3420456bdf6ab033114f av_three_fifth  avia-builder-el-21  el_after_av_one_half  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jkufapef-793b0f69567d1431ac1dae4ae08b39e4'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Once the 3D point cloud is acquired, an industry standard metrology software (PolyWorks<small><sup>TM<\/sup><\/small> Inspector) is used to obtain the required tapered hole measurements.<\/p>\n<p>The design of the BOREINSPECT system probe enables measurements in almost any plant environment:<\/p>\n<ul>\n<li>The small and fiber-based probe can be integrated with precision stages, robots or gantries.<\/li>\n<li>As an end-effector on a robot head, the probe alternates with drill end-effectors, and provides ID measurements regardless of hole location or orientation.<\/li>\n<li>The probe measurement is immune to ambient lighting and air perturbation. The probes can measure even in hostile environments, featuring extreme temperatures, pressures, or with radiation.<\/li>\n<\/ul>\n<p>The hole ID measurements are typically forwarded to process control software, so that real-time feedback is provided on drilling, grinding, or other tapered hole machining processes.<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-f43c9381c89a3420456bdf6ab033114f\">\n.flex_column.av-atjwfd-f43c9381c89a3420456bdf6ab033114f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-f43c9381c89a3420456bdf6ab033114f av_one_half  avia-builder-el-23  el_after_av_three_fifth  el_before_av_one_half  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-jkufapef-793b0f69567d1431ac1dae4ae08b39e4'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>Benefits of BOREINSPECT system for taper hole inspection<\/h2>\n<p>The BOREINSPECT system provides many benefits:<\/p>\n<ul>\n<li>Micron-precision of measurement<\/li>\n<li>Non-contact measurement &#8211; no consumables or stoppages to change probes<\/li>\n<li>Versatile installation &amp; integration options for fully automated measurement of tapered and other holes.\u00a0 Blind holes and hard-to-reach holes included.<\/li>\n<li>100 kHz scanning speed to enable 100% inspection<\/li>\n<li>Capabilities to provide quick visual comparison (deviation map) of the acquired ID measurements to pre-specified tolerances or to the CAD of the part<\/li>\n<li>Wide range of\u00a0 measurements in addition to GO\/NO-GO, with the same probe:\n<ul>\n<li>Geometry: Diameters of the taper hole, taper angle, depth of hole, conicity, axial straightness, ovality, etc.<\/li>\n<li>Location of internal features<\/li>\n<li>Concentricity with other features (e.g., bore leading to tapered chamfer)<\/li>\n<li>Defects (e.g., burrs, patterns of rifling from drill bit, cracks, etc.)<\/li>\n<li>Waviness and roughness (<a href=\"https:\/\/www.novacam.com\/fr\/2020\/04\/23\/automated-measurements-of-roughness-in-hard-to-reach-spaces\/\">axial<\/a> ou <a href=\"https:\/\/www.novacam.com\/fr\/2020\/07\/05\/measuring-surface-roughness-on-id-circumference\/\">circumferential<\/a>)<\/li>\n<li><a href=\"https:\/\/www.novacam.com\/fr\/applications\/bavardage\/\">Bavardage<\/a>.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-1906624284d21e64ed82fa8426343bc2\">\n.flex_column.av-atjwfd-1906624284d21e64ed82fa8426343bc2{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-1906624284d21e64ed82fa8426343bc2 av_one_half  avia-builder-el-25  el_after_av_one_half  el_before_av_one_half  flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-kmjn71ti-836304ff3374cf15f295031b05676b6c'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div id=\"attachment_42632\" style=\"width: 642px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.novacam.com\/wp-content\/uploads\/precision-die-inside-diameter-3d-measurements-2.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-42632\" class=\"wp-image-42632 size-full\" title=\"Mesures dans des environnements hostiles, tels que radioactifs, extr\u00eamement chauds ou cryog\u00e9niques, ou \u00e0 l&#039;int\u00e9rieur de chambres d&#039;\u00e9vaporation\" src=\"https:\/\/www.novacam.com\/wp-content\/uploads\/precision-die-inside-diameter-3d-measurements-2.jpg\" alt=\"Tapered interior of precision wire-drawing die. The acquired 3D point cloud can be automatically analyzed to measure included angles, lengths of different ID sections, roughness profiles, chatter, defects, etc.\" width=\"632\" height=\"581\" srcset=\"https:\/\/www.novacam.com\/wp-content\/uploads\/precision-die-inside-diameter-3d-measurements-2.jpg 632w, https:\/\/www.novacam.com\/wp-content\/uploads\/precision-die-inside-diameter-3d-measurements-2-300x276.jpg 300w, https:\/\/www.novacam.com\/wp-content\/uploads\/precision-die-inside-diameter-3d-measurements-2-80x74.jpg 80w\" sizes=\"auto, (max-width: 632px) 100vw, 632px\" \/><\/a><p id=\"caption-attachment-42632\" class=\"wp-caption-text\">Tapered interior of precision wire-drawing die. The acquired 3D point cloud can be automatically analyzed to measure included angles, lengths of different ID sections, roughness profiles, chatter, defects, etc.<\/p><\/div>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-f43c9381c89a3420456bdf6ab033114f\">\n.flex_column.av-atjwfd-f43c9381c89a3420456bdf6ab033114f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-f43c9381c89a3420456bdf6ab033114f av_one_half  avia-builder-el-27  el_after_av_one_half  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jkufapef-793b0f69567d1431ac1dae4ae08b39e4'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2>What about taper hole measurement in other industries?<\/h2>\n<p>Each machining and inspection process is unique.\u00a0 For micron-precision tapered hole measurements, Novacam provides 3D metrology solutions in:<\/p>\n<ul>\n<li><strong>A\u00e9rospatiale<\/strong>: aircraft <a href=\"https:\/\/www.novacam.com\/fr\/2021\/03\/21\/metrologie-3d-automatisee-sans-contact-dans-lusine-automatisation-avec-la-ligne-de-produits-novacam\/\">fastener holes<\/a><\/li>\n<li><strong>Automobile<\/strong>: tapered engine shaft couplings, pitman arms, taper bushings, nozzle seats in fuel injectors, raceways of tapered roller or ball bearings<\/li>\n<li><strong>Die and Mold measurements <\/strong>\u2013 high-precision dies with tapered holes, wire-drawing dies, mold cavities<\/li>\n<li><strong>Medical instrumentation<\/strong>: orthopedic device tapers<\/li>\n<li><strong>Nucl\u00e9aire<\/strong>: reactor tubing<\/li>\n<li>and more.<\/li>\n<\/ul>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-atjwfd-1906624284d21e64ed82fa8426343bc2\">\n.flex_column.av-atjwfd-1906624284d21e64ed82fa8426343bc2{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-atjwfd-1906624284d21e64ed82fa8426343bc2 av_one_half  avia-builder-el-29  el_after_av_one_half  el_before_av_two_third  flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-kmjn71ti-836304ff3374cf15f295031b05676b6c'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div id=\"attachment_42633\" style=\"width: 710px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.novacam.com\/wp-content\/uploads\/precision-die-inside-diameter-3d-linear-and-spiral-profiles.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-42633\" class=\"wp-image-42633 size-full\" title=\"Mesures dans des environnements hostiles, tels que radioactifs, extr\u00eamement chauds ou cryog\u00e9niques, ou \u00e0 l&#039;int\u00e9rieur de chambres d&#039;\u00e9vaporation\" src=\"https:\/\/www.novacam.com\/wp-content\/uploads\/precision-die-inside-diameter-3d-linear-and-spiral-profiles.jpg\" alt=\"An alternative recipe for measuring and analyzing the above precision die. 4 linear profiles of the tapered interior and one dense spiral profile of the middle cylindrical section can provide adequate 3D data for many measurements.\" width=\"700\" height=\"556\" srcset=\"https:\/\/www.novacam.com\/wp-content\/uploads\/precision-die-inside-diameter-3d-linear-and-spiral-profiles.jpg 700w, https:\/\/www.novacam.com\/wp-content\/uploads\/precision-die-inside-diameter-3d-linear-and-spiral-profiles-300x238.jpg 300w, https:\/\/www.novacam.com\/wp-content\/uploads\/precision-die-inside-diameter-3d-linear-and-spiral-profiles-80x64.jpg 80w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><p id=\"caption-attachment-42633\" class=\"wp-caption-text\">An alternative recipe for measuring and analyzing the above precision die. 4 linear profiles of the tapered interior and one dense spiral profile of the middle cylindrical section can provide adequate 3D data for many measurements.<\/p><\/div>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-581bax-45968cf977c1a46167a9dd12e20221fe\">\n.flex_column.av-581bax-45968cf977c1a46167a9dd12e20221fe{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-581bax-45968cf977c1a46167a9dd12e20221fe av_two_third  avia-builder-el-31  el_after_av_one_half  el_before_av_one_fourth  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-jkjvf8u9-5f98cc73d0df968d952d9611bdec24b1'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2><strong>Do you need to measure tapered holes?<\/strong><\/h2>\n<p>We are happy to discuss your particular application!<\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3i3l8p-c05e2cae05f0b2f3157a3245207010de\">\n.flex_column.av-3i3l8p-c05e2cae05f0b2f3157a3245207010de{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-3i3l8p-c05e2cae05f0b2f3157a3245207010de av_one_fourth  avia-builder-el-33  el_after_av_two_third  el_before_av_hr  flex_column_div av-zero-column-padding  column-top-margin'     ><div  class='avia-button-wrap av-jkoi6qsv-bf300e772180140d9735399749ed4928-wrap avia-button-left  avia-builder-el-34  avia-builder-el-no-sibling'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jkoi6qsv-bf300e772180140d9735399749ed4928\">\n#top #wrap_all 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id=\"style-css-av-tix1n-b6dc12bab2a4a33d3e4d6c73550c503f\">\n.flex_column.av-tix1n-b6dc12bab2a4a33d3e4d6c73550c503f{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-tix1n-b6dc12bab2a4a33d3e4d6c73550c503f av_one_third  avia-builder-el-36  el_after_av_hr  el_before_av_one_third  first flex_column_div av-zero-column-padding'     ><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-tix1n-8a7f8cc25c43c46e94cc3d44ce8407dd\">\n.flex_column.av-tix1n-8a7f8cc25c43c46e94cc3d44ce8407dd{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-tix1n-8a7f8cc25c43c46e94cc3d44ce8407dd av_one_third  avia-builder-el-37  el_after_av_one_third  el_before_av_one_third  flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-24dm3-ba103b6d78fffee9b20fa453d4e54625'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><a href=\"https:\/\/www.novacam.com\/fr\/entreprise\/nouvelles-et-evenements\/\">\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2lu3yx-d51a9b47a383446087af26e41f8404c8\">\n.av_font_icon.av-2lu3yx-d51a9b47a383446087af26e41f8404c8 .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-2lu3yx-d51a9b47a383446087af26e41f8404c8 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-iconfont avia-font-entypo-fontello av-no-color avia-icon-animate'><span class='av-icon-char' data-av_icon='\ue830' data-av_iconfont='entypo-fontello' aria-hidden=\"true\" ><\/span><\/span>Back to News &amp; Events list<\/a><\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-tix1n-8a7f8cc25c43c46e94cc3d44ce8407dd\">\n.flex_column.av-tix1n-8a7f8cc25c43c46e94cc3d44ce8407dd{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-tix1n-8a7f8cc25c43c46e94cc3d44ce8407dd av_one_third  avia-builder-el-40  el_after_av_one_third  el_before_av_textblock  flex_column_div av-zero-column-padding'     ><\/div>\n<section  class='av_textblock_section av-lz5131-5eef80ee99e898229f2e95b3c265d93f'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><\/div><\/section>\n<div  class='hr av-jzgful-fe151bac295c20d66d1ad753dbfbfaa9 hr-default  avia-builder-el-42  el_after_av_textblock  avia-builder-el-last'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>","protected":false},"excerpt":{"rendered":"<p>L'inspection des trous coniques \u00e0 l'aide de jauges de bouchons de bleuissement est une technique GO\/NO-GO simple et \u00e9conomique. Cependant, il s'agit d'une technique subjective, bas\u00e9e sur des estimations, qui n\u00e9cessite une exp\u00e9rience consid\u00e9rable de la part de l'op\u00e9rateur. Nous d\u00e9crivons ici bri\u00e8vement le processus de bleuissement et examinons ensuite une approche alternative pour les mesures de trous coniques qui utilise des sondes optiques \u00e0 base de fibres pour une m\u00e9trologie 3D compl\u00e8te et automatis\u00e9e de leur diam\u00e8tre int\u00e9rieur.<\/p>","protected":false},"author":3,"featured_media":42627,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[27,4],"tags":[128,61,127,129,18,125,123,124,126],"class_list":["post-42617","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-all","category-news","tag-blind-tapered-hole","tag-chamfers","tag-conical-hole-measurement","tag-countersinks","tag-inside-diameter","tag-taper-angle","tag-taper-hole","tag-taper-measurement","tag-tapered-bore"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tapered hole measurement \u2013 replacing bluing plug gauges with fiber-based optical 3D metrology - Novacam<\/title>\n<meta name=\"description\" content=\"Inspecting high-precision tapered holes with bluing plug gauges is simple and economical but also subjective and labour-intensive. Here we describe the bluing process and an alternative approach for thorough, non-contact and automated 3D metrology of taper hole IDs.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.novacam.com\/fr\/2021\/05\/12\/tapered-hole-measurement-replacing-bluing-gauges-with-fiber-based-optical-3d-metrology\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tapered hole measurement \u2013 replacing bluing plug gauges with fiber-based optical 3D metrology - Novacam\" \/>\n<meta property=\"og:description\" content=\"Inspecting high-precision tapered holes with bluing plug gauges is simple and economical but also subjective and labour-intensive. 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