{"id":3548,"date":"2026-10-31T11:21:25","date_gmt":"2026-10-31T03:21:25","guid":{"rendered":"https:\/\/jtlcnc.com\/?p=3548"},"modified":"2026-10-31T11:21:27","modified_gmt":"2026-10-31T03:21:27","slug":"what-factors-affect-the-coaxiality-of-coordinate-measuring-machines-2","status":"publish","type":"post","link":"https:\/\/jtlcnc.com\/ar\/2026\/10\/31\/what-factors-affect-the-coaxiality-of-coordinate-measuring-machines-2\/","title":{"rendered":"\u0645\u0627 \u0627\u0644\u0639\u0648\u0627\u0645\u0644 \u0627\u0644\u062a\u064a \u062a\u0624\u062b\u0631 \u0639\u0644\u0649 \u0645\u062d\u0648\u0631\u064a\u0629 \u0622\u0644\u0627\u062a \u0642\u064a\u0627\u0633 \u0627\u0644\u0625\u062d\u062f\u0627\u062b\u064a\u0627\u062a\u061f"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Factors affecting the coaxiality of Coordinate Measuring Machines (CMMs) essentially boil down to: inaccurate axint, unstable workpieces, machine inaccuracy, unstable environment, and improper methods. I have compiled this into the most practical, ready-to-use version for the shop floor, without unnecessary erbosity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I. Machine Inherent Accuracy (Root Cause)<br>Geometric Accuracy<br>Perpendicularity, straightness, pitch, and yaw of the three axes<br>Indexing error of ry table\/turntable (extremely influential when present)<br>Probe System<br>Bent, curved, or deformed stylus extensions<br>Poor repeatability of the probe, inaccurate caliboose suction cups or adapters<br>Motion and Transmission<br>Wear of guides, variation in air-bearing clearance<br>Vibration of lead screws, belts, or motors<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">II. Workpece and Fixturing (Most Common on the Shop Floor)<br>Workpiece Positioning<br>Uneven datum surfaces, burrs, or dirt<br>Inconsistent height of shims, uneven force dibution<br>Workpiece Deformation<br>Sagging of thin-walled parts or long shafts due to self-weight<br>Release of internal stresses, thermal deformation<br>Clamping Forceed too tight \u2192 deformation<br>Clamped too loose \u2192 micro-movement during measurement<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">III. Environment (Coaxiality is a form and position tolerance, extremely sensitive)<br>Temperature<br>Local differences (sunlight, fans, body heat)<br>Temperature inconsistency between workpiece and machine<br>Temperature gradients causing micro-deformation of columns and tables<br>Vibration<br>Floor vibraarby machine tools, personnel movement<br>Inadequate vibration isolation \u2192 drifting axis fitting<br>Cleanliness<br>Dust, chips, oil \u2192 distorted measurement points<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IV. Measurement Method and ms (Determines Success or Failure)<br>Point Sampling Strategy<br>Too few cross-sections \u2192 inaccurate fitting<br>Points sampled too close together, uneven distribution<br>Measuring only one end, full length<br>Datum Establishment<br>Incorrect selection of datum<br>Datum cylinder too short or imprecise<br>Fitting Algorithm<br>Mixed use of Least Squares, Maximum Inscribed, and imum Circumscribed<br>Inconsistent software settings causing result fluctuations<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V. Influence of Granite Table\/Bed (The Part You Care About Most)<br>Table Flatness<br>Directly affects tkpiece datum surface; if the datum is skewed, coaxiality will be off.<br>Base Stability<br>Granite has low thermal expansion, but uneven support, loose leveling feet, orfluctuations can cause overall machine geometry drift.<br>\u062a\u062e\u0645\u064a\u062f \u0627\u0644\u0627\u0647\u062a\u0632\u0627\u0632\u0627\u062a<br>Granite has good damping properties; however, poor vibration isolation or a poor foundation can still ruin coaxiality <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"326\" height=\"367\" src=\"https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/07\/3.png\" alt=\"\" class=\"wp-image-3039\" srcset=\"https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/07\/3.png 326w, https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/07\/3-266x300.png 266w, https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/07\/3-11x12.png 11w\" sizes=\"(max-width: 326px) 100vw, 326px\" \/><\/figure>","protected":false},"excerpt":{"rendered":"<p>\u062a\u062a\u0644\u062e\u0635 \u0627\u0644\u0639\u0648\u0627\u0645\u0644 \u0627\u0644\u062a\u064a \u062a\u0624\u062b\u0631 \u0639\u0644\u0649 \u0645\u062d\u0648\u0631\u064a\u0629 \u0645\u0627\u0643\u064a\u0646\u0627\u062a \u0642\u064a\u0627\u0633 \u0627\u0644\u0625\u062d\u062f\u0627\u062b\u064a\u0627\u062a (CMMs) \u0628\u0634\u0643\u0644 \u0623\u0633\u0627\u0633\u064a \u0641\u064a: \u0639\u062f\u0645 \u062f\u0642\u0629 \u0627\u0644\u0645\u062d\u0648\u0631\u060c \u0648\u0639\u062f\u0645 \u0627\u0633\u062a\u0642\u0631\u0627\u0631 \u0642\u0637\u0639 \u0627\u0644\u0639\u0645\u0644\u060c \u0648\u0639\u062f\u0645 \u062f\u0642\u0629 \u0627\u0644\u0645\u0627\u0643\u064a\u0646\u0629\u060c \u0648\u0627\u0644\u0628\u064a\u0626\u0629 \u063a\u064a\u0631 \u0627\u0644\u0645\u0633\u062a\u0642\u0631\u0629\u060c \u0648\u0627\u0644\u0637\u0631\u0642 \u063a\u064a\u0631 \u0627\u0644\u0633\u0644\u064a\u0645\u0629. \u0644\u0642\u062f \u0642\u0645\u062a\u064f \u0628\u062a\u062c\u0645\u064a\u0639 \u0630\u0644\u0643 \u0641\u064a \u0627\u0644\u0646\u0633\u062e\u0629 \u0627\u0644\u0623\u0643\u062b\u0631 \u0639\u0645\u0644\u064a\u0629 \u0648\u062c\u0627\u0647\u0632\u0629 \u0644\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0641\u064a \u0623\u0631\u0636\u064a\u0629 \u0627\u0644\u0648\u0631\u0634\u0629\u060c \u062f\u0648\u0646 \u0623\u064a \u062a\u062f\u0627\u062e\u0644\u0627\u062a \u063a\u064a\u0631 \u0636\u0631\u0648\u0631\u064a\u0629. I. \u0627\u0644\u062f\u0642\u0629 \u0627\u0644\u0645\u062a\u0623\u0635\u0644\u0629 \u0641\u064a \u0627\u0644\u0645\u0627\u0643\u064a\u0646\u0629 (\u0627\u0644\u0633\u0628\u0628 \u0627\u0644\u062c\u0630\u0631\u064a)\u0627\u0644\u062f\u0642\u0629 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629\u0627\u0644\u062f\u0642\u0629 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629\u0627\u0644\u0639\u0645\u0648\u062f\u064a\u0629\u060c \u0648\u0627\u0644\u0627\u0633\u062a\u0642\u0627\u0645\u0629\u060c \u0648\u0627\u0644\u0645\u064a\u0644\u060c \u0648\u0627\u0644\u0627\u0646\u062d\u0631\u0627\u0641\u060c \u0648\u0627\u0644\u0627\u0646\u0639\u0631\u0627\u062c...<\/p>","protected":false},"author":1,"featured_media":3165,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[35],"tags":[],"class_list":["post-3548","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"taxonomy_info":{"category":[{"value":35,"label":"NEWS"}]},"featured_image_src_large":["https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/07\/1-1.png",839,796,false],"author_info":{"display_name":"jinxing6611@gmail.com","author_link":"https:\/\/jtlcnc.com\/ar\/author\/jtlcnc\/"},"comment_info":0,"category_info":[{"term_id":35,"name":"NEWS","slug":"news","term_group":0,"term_taxonomy_id":35,"taxonomy":"category","description":"","parent":0,"count":421,"filter":"raw","cat_ID":35,"category_count":421,"category_description":"","cat_name":"NEWS","category_nicename":"news","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/posts\/3548","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/comments?post=3548"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/posts\/3548\/revisions"}],"predecessor-version":[{"id":3549,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/posts\/3548\/revisions\/3549"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/media\/3165"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/media?parent=3548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/categories?post=3548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/tags?post=3548"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}