{"id":2868,"date":"2026-06-04T11:21:10","date_gmt":"2026-06-04T03:21:10","guid":{"rendered":"https:\/\/jtlcnc.com\/?p=2868"},"modified":"2026-06-04T11:31:42","modified_gmt":"2026-06-04T03:31:42","slug":"precision-specification-of-granite-air-flotation-platform","status":"publish","type":"post","link":"https:\/\/jtlcnc.com\/fr\/2026\/06\/04\/precision-specification-of-granite-air-flotation-platform\/","title":{"rendered":"Sp\u00e9cifications techniques d\u00e9taill\u00e9es de la plate-forme de flottation \u00e0 air pour le granit"},"content":{"rendered":"

Applicable Standards: GB\/T20428, ISO8512-2, DIN876, ISO230-1; Test Ambient: 20\u2103\u00b11\u2103, RH40%~60%, Vibration Grade VC-E, Clean Dust-free Environment Part 1: Granite Base Geometric Precision (Benchmark Surface) Precision Grade Flatness Tolerance(\u03bcm per meter) Surface Roughness Ra Adjacent Surface Squareness Typical Application Grade 000 (Ultra-precision) \u22641.0 \u22640.05\u03bcm \u22641.5\u03bcm\/m Semiconductor, Lithography, Nano Inspection Stage Grade 00 (High Precision) \u22642.0 \u22640.10\u03bcm \u22643.0\u03bcm\/m CMM Base, Optical Inspection Equipment Grade 0 (Industrial Precision) \u22644.0 \u22640.20\u03bcm \u22646.0\u03bcm\/m Precision Machining & Vision Inspection Grade 1 (General Industrial) \u22648.0 \u22640.40\u03bcm \u226412\u03bcm\/m Training Bench, Ordinary Automation Fixture Flatness Calculation Formula: Tolerance = Coefficient \u00d7 \u221a(L\u00d7W); Coefficient:000=0.003,00=0.006,0=0.012,1=0.024 (Unit:\u03bcm) Additional Base Material & Machining Requirement 1. Material: Jinan Black Granite; Linear Expansion Coefficient \u22644.6\u00d710\u207b\u2076\/\u2103, Water Absorption\uff1c0.13%, Shore Hardness HS\u2265702. Guide Mounting Straightness: Grade000 \u22640.8\u03bcm\/m; Grade00 \u22641.6\u03bcm\/m3. Overall Level after Levelling Foot Adjustment: \u22642\u03bcm\/1000mm4. Thread Hole Position Tolerance:000\u2264\u00b10.02mm;00\u2264\u00b10.05mm; Counterbore Parallelism \u22642\u03bcm\/100mm Part 2: Air Bearing Motion Precision (Air Film & Drive System) 1. Positioning Accuracy (Full Travel Range) – Nano Grade(Base 000): \u00b10.1~\u00b10.3\u03bcm- Sub-micron Grade(Base 00): \u00b10.3~\u00b11.0\u03bcm- Micron Grade(Base 0\/1): \u00b11.0~\u00b13.0\u03bcm 2. Repeat Positioning Accuracy (3\u03c3 Statistical Value) – Ultra-precision: \u2264\u00b10.05~\u00b10.1\u03bcm- High-precision: \u2264\u00b10.2\u03bcm- General Industrial: \u2264\u00b10.5~\u00b11.0\u03bcm 3. Straightness of Single Axis Full Stroke – Grade000: \u22640.5\u03bcm\/1000mm- Grade00: \u22641.2\u03bcm\/1000mm- Grade0: \u22643.0\u03bcm\/1000mm 4. Air Film Core Parameter Standard air film thickness: 10~15\u03bcm, Air film stiffness \u2265120N\/\u03bcm; No air hammer & crawling phenomenon, zero mechanical contact friction 5. X\/Y Orthogonality (Multi-axis Platform) Grade000 \u22641 arcsec; Grade00 \u22643 arcsec; Grade0 \u22648 arcsec Part3 Application Grade Matching Table 1. Semiconductor\/Lithography: Grade000 Base + Position \u00b10.2\u03bcm, Repeat \u22640.1\u03bcm2. CMM\/High-end Vision: Grade00 Base + Position \u00b10.5\u03bcm, Repeat \u22640.2\u03bcm3. Precision Machining Inspection: Grade0 Base + Position \u00b11.5\u03bcm, Repeat \u22640.6\u03bcm4. Teaching & Ordinary Fixture: Grade1 Base + Position \u00b13.0\u03bcm Part4 Acceptance & Inspection Condition 1. Pre-test Stabilization: Place platform in constant-temperature room for \u226572h to release internal stone stress before detection2. Inspection Instruments: Laser Interferometer, White-light Roughness Tester, Electronic Precision Level, Squareness Calibrator3. Compliance Code: GB\/T20428, ISO8512-2, DIN876, ISO230-1<\/p>\n\n\n\n

\"\"<\/figure>","protected":false},"excerpt":{"rendered":"

Normes applicables : GB\/T 20428, ISO 8512-2, DIN 876, ISO 230-1 ; Conditions d'essai : 20 \u00b0C \u00b1 1 \u00b0C, humidit\u00e9 relative 40%~60%, niveau de vibration VC-E, environnement propre et exempt de poussi\u00e8re Partie 1 : Pr\u00e9cision g\u00e9om\u00e9trique de la base en granit (surface de r\u00e9f\u00e9rence) Grade de pr\u00e9cision Tol\u00e9rance de plan\u00e9it\u00e9 (\u03bcm par m\u00e8tre) Rugosit\u00e9 de surface Ra Perpendicularit\u00e9 des surfaces adjacentes Application typique Grade 000 (ultra-pr\u00e9cision) \u2264 1,0 \u2264 0,05 \u03bcm \u2264 1,5 \u03bcm\/m Semi-conducteurs, lithographie, platine d\u2019inspection nanom\u00e9trique Grade 00 (haute pr\u00e9cision) \u2264 2,0 \u2264 0,10 \u03bcm\u2026<\/p>","protected":false},"author":1,"featured_media":2871,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_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-2868","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\/06\/20260602-084635.png",800,400,false],"author_info":{"display_name":"jinxing6611@gmail.com","author_link":"https:\/\/jtlcnc.com\/fr\/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":362,"filter":"raw","cat_ID":35,"category_count":362,"category_description":"","cat_name":"NEWS","category_nicename":"news","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2868","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/comments?post=2868"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2868\/revisions"}],"predecessor-version":[{"id":2870,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2868\/revisions\/2870"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media\/2871"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media?parent=2868"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/categories?post=2868"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/tags?post=2868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}