Industry-wide Applications of Marble (Granite) Motion PlatformsMarble motion platforms generally refer to integrated slides consisting of a natural granite precision motion base linear motors / air bearing guides. Relying on five core advantages—low thermal expansion, high damping and vibration reduction, non-magnetic insulation, high rigidity, and long-term deformation resistance—they cover six high-precision fields: semiconductors, optics and…
I. Key Points for Base Selection (Categorized by Accuracy Grade, Material, and Specification)(1) Stone Material Selection (Mainstream Jinan Blue, the only recommended metrology-grade stone)Jinan Blue Granite (First choice for Grade 00/0)Dense mineral structure, black background, no white spots or inclusions, extremely low linear expansion coefficient, no pores, suitable for vision measuring machines, CMMs, and 2D…
Application of Granite Base for 2D Vision Measuring MachinesThe granite (Grade 00 Jinan Green natural) base is the core reference load-bearing component of 2D/2.5D vision measuring machines. Relying on its low expansion, high rigidity, non-magnetic and wear-resistant properties, it provides a constant reference for optical non-contact measurement. Its applications are divided into three major sectors:…
I. Executive StandardsManufacturing Standard: JB/T 10027-2017 “Granite Surface Plates, Straight Edges, Squares, and Square Boxes”Verification Standard: JJG 117-2013 “Verification Regulation for Surface Plates”Accuracy Grade: Grade 000, Grade 00, Grade 0 (the smaller the number, the higher the accuracy); some scenarios still use the old standard Grade 1 (General Industrial Grade). II. Grade Definitions and ApplicationsGrade…
Granite Precision Square Block: Application Scenarios and DescriptionGranite square blocks (also known as granite right-angle square blocks or inspection square blocks) are manufactured according to JB/T 10027-2017. Featuring multiple faces mutually at 90°, high flatness/perpendicularity, and strong stability, they are classic three-dimensional reference gauges in the machinery industry, widely used for scribing, inspection, clamping, and…
Granite Precision Square Accuracy Grade Classification Domestic Executive Standard: JB/T 10027-2017 “Granite Surface Plates, Straight Edges, and Squares”, classified by working surface flatness, squareness accuracy, and parallelism, divided into three grades: 000, 00, and 0. The smaller the grade number, the higher the accuracy. I. Grade Positioning (Application Scenarios)Grade 000 (Reference Grade)Highest accuracy, limited to…
Granite precision square is a high-precision geometric measurement standard, primarily used for the inspection and calibration of perpendicularity, parallelism, and flatness, and is widely applied in fields such as machinery manufacturing, precision assembly, metrology calibration, and aerospace. I. Core Features (Why Granite)High Stability: Natural aging and internal stress release ensure long-term deformation-free performance; low coefficient…
Accuracy Grade Classification of Granite Parallel Rulers (Granite Straightedges)The domestic executive standard JB/T 7878-2017 “Rock Straightedges” divides them into three grades: Grade 00, Grade 0, and Grade 1, based on geometric tolerances such as straightness, working surface parallelism, and flatness. Grade 00 has the highest accuracy, and Grade 1 has the lowest.I. Core Determination Indicators…
Granite parallel bars (also known as granite parallel gauges / flat bars) are high-precision reference measuring tools made of natural granite (such as Jinan Green) through precision machining and manual grinding. Used in pairs, they are primarily used for parallelism, straightness, and flatness inspection, as well as equipment calibration. I. Core FeaturesStable Accuracy: Natural aging…
Advantages and Applications of Granite Comparison Table (Comparison Platform / Comparison Table)A granite comparison table is a specialized comparison inspection device integrated with a high-precision granite platform as the base body, equipped with components such as micrometers, dial indicators, dial test indicators, indicator holders, and limit blocks. It is also commonly referred to as a…
