(1) Embedded Stainless Steel Threaded Inserts (Most common, grid installation holes)
High-strength stainless steel threaded inserts are embedded in the working surface of the platform, rather than tapping directly into the stone, to avoid screw cracking or stripping:
Standard thread specifications: M6\/M8\/M10\/M12 (Metric); 1\/4-20, 3\/8-16 (Imperial)
Grid spacing: 50\/100\/150mm standard matrix, non-standard layouts available upon request
Machining precision: Hole position tolerance \u00b10.1mm, threaded insert countersink 0.5~1mm below the surface, overall grinding after completion to preserve flatness
Process: CNC diamond water-cooled drilling \u2192 gluing and embedding stainless steel bushings \u2192 constant temperature grinding of the entire surface \u2192 laser detection of hole positions
(2) Precision Reamed Holes (Locating through holes \/ Countersunk installation holes)
High-precision reference reamed holes such as 8H7, 10H7, used for locating pins, columns, and tooling positioning, with hole diameter tolerance \u00b10.015mm, high perpendicularity, compatible with fixtures, displacement stages, and height gauge bases.<\/li>\n\n\n\n
Hole edge distance from stone side \u226550mm, hole-to-hole spacing \u2265100mm to disperse stress;
Full water-cooled diamond tool machining throughout, dry drilling is prohibited;
Thickened plates (thickness \u2265100mm) for large-sized platforms to enhance the structural strength of the hole opening;
Countersunk holes for bracket fixing can be processed simultaneously at the bottom for locking the platform floor bracket.
III. Accuracy Grades (National Standard GB\/T20428, DIN876)
Tableau
Accuracy Grade Flatness Tolerance (\u03bcm\/m) Applicable Scenarios
Grade 000 \u22641.5 Nano-optics, CMM reference, metrology laboratories
Grade 00 \u22643.0 Precision component inspection, laser interferometry, automated tooling bases
Grade 0 \u22646.0 Mold inspection, machine tool calibration, conventional precision measurement
Working surface roughness Ra\u22640.32\u03bcm, mirror-polished, clean and free of sand pits or cracks.<\/li>\n<\/ol>\n\n\n\n
IV. Typical Application Scenarios I. Core Material and Innate AdvantagesMainly using Jinan Green fine-grained black granite, naturally aged for hundreds of millions of years with no internal stress, offering outstanding advantages compared to cast iron reference plates:Ultra-low thermal expansion: Thermal expansion coefficient 2.5~4.6\u00d710\u207b\u2076\/\u2103, almost no deformation under temperature changes, suitable for constant temperature metrology, optics, and semiconductor scenarios;High rigidity…<\/p>","protected":false},"author":1,"featured_media":2996,"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-2987","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\/20260625-092154.png",560,560,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":311,"filter":"raw","cat_ID":35,"category_count":311,"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\/2987","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=2987"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2987\/revisions"}],"predecessor-version":[{"id":2997,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2987\/revisions\/2997"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media\/2996"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media?parent=2987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/categories?post=2987"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/tags?post=2987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Precision Inspection: Height gauge, dial indicator base, component scribing, geometric tolerance inspection;
Automation Equipment: Vision inspection platform, guide rail base, fixture quick-clamping table;
Optical Laboratory: Optical path reference table, displacement slide installation, interferometer base;
Metrology \/ CMM Accessories: Standard reference plate, tooling positioning base;
Semiconductor \/ Lithium Battery: Wafer inspection, battery cell dimension measurement high-precision workbench.
V. Optional Accessories
Adjustable Vibration-Damping Bracket: Cast iron bracket leveling feet, paired with anti-vibration pads, for rapid platform leveling;
Bottom Mounting Holes: Pre-embedded threaded holes on the bottom surface, for overall fixing to the machine tool base;
T-Slot Composite Structure: Tabletop features both grid threaded holes and T-slots, compatible with various fixtures;
Protective Sealing: Glazed stone treatment, resistant to oil stains and water seepage;
Chamfer \/ Rounded Corner: R5 rounded corners around the working surface, to prevent bumping and chipping.
VI. Usage and Maintenance Key Points
Do not over-tighten the locking screws to prevent threaded sleeve loosening and stone cracking;
Clean with anhydrous alcohol and a lint-free cloth, and prohibit hard metal scratching the tabletop;
Avoid single-point impact from heavy objects, and choose thickened load-bearing areas for handling and lifting;
Use a dust cover for long-term storage, and keep away from high temperatures and corrosive acid\/alkali environments.
VII. Custom Parameter Selection Reference
Dimensions: Small 100\u00d7160mm (height gauge base) ~ Large 3000\u00d76000mm equipment base;
Thickness: 30~300mm, the more holes and larger the size, the thicker the required plate;
Hole Types: Full grid threaded holes, partial threaded holes, single-side positioning light holes, bottom-surface fixing countersunk holes;
Precision: 0\/00\/000 grade as required, accompanied by flatness and hole position accuracy inspection reports.<\/p>\n\n\n\n![\"\"](\"https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/06\/20260625-092154.png\")
<\/figure>","protected":false},"excerpt":{"rendered":"