Granite/Marble Precision Tooling Components (Multi-Station Positioning Bases): Core Carrier for 3D Tooling Multi-Dimensional Positioning and Collaboration

Solution Overview

This granite/marble precision tooling component (including multi-station positioning bases) is specifically designed for 3D tooling positioning, multi-station collaborative machining, and complex component assembly in precision manufacturing. With “3D multi-surface accurate positioning + natural material stability + multi-station integrated adaptation” as its core, it addresses three key pain points of traditional metal tooling components: “inconsistent 3D precision, difficult multi-station coordination, and rapid long-term precision degradation”.

Leveraging the ultra-low thermal expansion coefficient (granite: 5-8×10⁻⁶ per ℃; marble: 6-9×10⁻⁶ per ℃), high damping and vibration resistance (vibration attenuation rate ≥ 85%), and 3D precision machining technology of high-density granite (Jinan Green/Taishan Green) and high-purity marble, it achieves a 3D positioning accuracy of ≤ ±0.003mm and multi-station parallelism of ≤ 0.005mm/1000mm. It supports 1-minute quick changeover of 3D tooling and is suitable for scenarios such as automotive chassis multi-component assembly, semiconductor equipment tooling brackets, and aviation part multi-station inspection. It helps enterprises reduce 3D tooling positioning errors by 70%, increase multi-station production efficiency by 60%, and maintain precision for 5-8 years.

Core Function System

1. 3D Multi-Surface Accurate Positioning and Tooling Adaptation

• Multi-Dimensional Datum Surface Design: The component integrates multiple sets of precision datums (flatness Grade 00: ≤ 0.003mm/1000mm; perpendicularity: ≤ 0.002mm/1000mm) including “flat surface + side surface + step surface”. It enables flat positioning (e.g., base fitting), side limiting (e.g., workpiece side positioning), and step support (e.g., load-bearing for stepped surfaces of special-shaped parts) of tooling, solving the limitation of traditional flat tooling that “can only achieve single-dimensional positioning”. It adapts to 3D tooling needs for shaft parts, box parts, and special-shaped structural parts (e.g., tooling positioning for automotive gearbox housings).
• 3D Multi-Hole Positioning Layout: Precision positioning holes (aperture: φ6-φ20mm, tolerance H7; hole position accuracy: ±0.005mm) are machined on flat, side, and step surfaces as required. It supports “flat + side” composite positioning (e.g., tooling fixed by both flat positioning pins and side limiting pins). The positioning holes are compatible with ISO standard tooling interfaces, eliminating the need for custom dedicated connectors. The 3D tooling positioning error is ≤ ±0.008mm, meeting the “multi-dimensional constraint” requirement for precision assembly.
• Flexible Tooling Quick Changeover: Equipped with high-precision 3D positioning pins (tolerance h6, fit clearance ≤ 0.003mm) and quick-locking clamping mechanisms (supporting flat/side clamping, clamping force: 500-8000N), it enables 1-minute quick installation/disassembly of 3D tooling. There is no need to re-calibrate multi-dimensional datums, and the tooling positioning accuracy deviation after changeover is ≤ ±0.01mm. It adapts to “small-batch, multi-variety” 3D component production (e.g., tooling changeover for different types of semiconductor carriers).

2. Multi-Station Collaborative Integration and Automation Adaptation

• Multi-Station Integrated Layout: The multi-station positioning base integrates 2-12 independent stations in a “linear/matrix pattern” (e.g., a 3000×1500mm base can have 6 stations). Each station is equipped with independent 3D positioning hole sets and datum surfaces. The parallelism between stations is ≤ 0.005mm/1000mm, and coaxiality is ≤ 0.008mm. It supports simultaneous operation of multiple sets of 3D tooling (e.g., multi-station press-fitting of automotive parts, multi-station inspection of precision connectors), increasing multi-station production efficiency by 60%.
• In-Depth Collaboration with Automation Equipment: The component reserves robot gripping interfaces (e.g., tooling positioning datum blocks, sensor mounting holes) and can seamlessly connect with 6-axis robots, AGV conveying systems, and visual positioning equipment. This enables automatic loading/unloading of 3D tooling and automatic detection of tooling status. It supports offline programming to preset multi-station positioning parameters, reducing the changeover time of automated production lines from 4 hours to 10 minutes (e.g., automated changeover of multi-station drilling tooling for aviation parts).
• Tooling Precision Compensation and Monitoring: Laser interferometer calibration datum points (interval: 500mm, accuracy: ±0.0005mm) are reserved on the edge of the base, allowing regular calibration of multi-station 3D precision. It supports connection to a tooling precision monitoring system, which uses displacement sensors to real-time monitor tooling positioning deviations and automatically issue warnings when deviations exceed limits. This ensures long-term machining/assembly precision of ≤ ±0.006mm.

3. Stability and Durability Guarantee Under All Working Conditions

• Material Precision and Vibration Resistance: Granite components are made of Jinan Green/Taishan Green (quartz content ≥ 65%, density ≥ 2.7g/cm³), with a 3D datum surface roughness of Ra ≤ 0.02μm. Marble components are made of high-purity black/beige marble (calcium carbonate ≥ 95%, density ≥ 2.75g/cm³), with a 3D datum surface roughness of Ra ≤ 0.05μm. Both have high damping properties, and the vibration amplitude during tooling machining is ≤ 0.003mm, avoiding 3D tooling displacement caused by vibration (e.g., positioning of precision grinding tooling).
• Corrosion Resistance and Wear Durability of 3D Structures: All datum surfaces and positioning hole inner walls undergo “precision honing + nano-ceramic coating” treatment (coating thickness: 5-10μm), withstanding cutting fluids, alcohol, and semiconductor cleaning agents. There is no rust or wear problem like that of metal components. After ≥ 100,000 repeated insertions/extractions, the fit clearance variation of positioning holes is ≤ 0.002mm. The deformation of step surfaces after long-term load-bearing (≤ 500kg per station) is ≤ 0.001mm, requiring no frequent maintenance.
• Environmental Adaptability Optimization: Natural stone has a uniform thermal expansion coefficient. Under workshop temperature fluctuations of ±5℃, the 3D dimension variation of a 1m-long component is ≤ 0.001mm, avoiding multi-dimensional positioning deviations caused by temperature. Optional anti-static treatment (surface resistance: 10⁶-10⁹Ω) and anti-corrosion coating (adapting to harsh environments such as marine engineering) are available on the surface, meeting the needs of special industries such as semiconductors, aviation, and shipbuilding.

Core System Composition

Typical Industry Application Cases

1. Automotive Chassis Multi-Component Assembly: An automotive enterprise uses it as a multi-station base for automotive chassis suspension multi-component assembly tooling — adopting a Jinan Green granite multi-station base (3000×1500×300mm, 6 stations) with a station parallelism of ≤ 0.005mm/1000mm. Through flat + side composite positioning, the coaxiality error of suspension component assembly is reduced from ±0.02mm to ±0.006mm, assembly efficiency is increased from 15 units/hour to 28 units/hour, and the defect rate is reduced by 80%.
2. Semiconductor Equipment Tooling Bracket: A semiconductor manufacturer uses it as a tooling bracket for 12-inch wafer etching equipment — selecting an anti-static granite tooling component (800×600×200mm) with a 3D positioning hole accuracy of ±0.003mm. The coaxiality between the tooling bracket and the equipment spindle is ≤ 0.004mm, and the etching pattern position deviation is reduced from ±0.008mm to ±0.002mm, meeting the 7nm process requirements. The tooling changeover time is shortened from 2 hours to 1 minute.
3. Aviation Part Multi-Station Inspection: An aviation enterprise uses it as a multi-station inspection base for engine blades — adopting a Jinan Green granite base (2000×1000×250mm, 4 stations). Each station is equipped with a step support surface (height tolerance ±0.003mm). The repeatability of blade geometric error inspection is ≤ ±0.002mm, inspection efficiency is increased from 8 pieces/hour to 20 pieces/hour, and the calibration cycle is extended from 3 months to 12 months.
4. Precision Mold Multi-Component Assembly: A mold enterprise uses it as a tooling component for mobile phone shell mold multi-component assembly — adopting a marble tooling component (1200×800×180mm) with flat + side composite positioning. The assembly gap of mold components is reduced from 0.01mm to 0.003mm, the service life of the mold is doubled, the changeover time is shortened from 1.5 hours to 45 seconds, and the production efficiency of multi-model molds on the same line is increased by 50%.

Core Competitive Advantages

• Leading 3D Positioning Capability: Integrating multi-dimensional datums of flat, side, and step surfaces, the positioning dimensions cover more than 3 times that of traditional tooling. The 3D tooling positioning error is ≤ ±0.008mm, solving the core pain point of “difficult multi-dimensional constraint” for complex components, especially suitable for high-end fields such as aviation and semiconductors.
• High Multi-Station Precision Consistency: The multi-station parallelism is ≤ 0.005mm/1000mm and coaxiality is ≤ 0.008mm, far exceeding that of metal multi-station bases (parallelism ≥ 0.015mm/1000mm). It ensures consistent multi-station machining/assembly and reduces rework caused by batch differences.
• Long-Term Reliable Precision Stability: After 36 months of natural aging treatment, 99.5% of 3D internal stress is eliminated. The precision retention period is 5-8 years (only 1-2 years for metal components), reducing downtime for frequent calibration and saving enterprises over 300 hours of operation and maintenance costs annually.
• Strong Compatibility with Automation Integration: Reserving automation interfaces for robots, AGVs, and sensors, it can be seamlessly integrated into Industry 4.0 production lines. The efficiency of automated tooling changeover is increased by 80%, adapting to the demand for unmanned tooling operation in “dark factories”.
• Extremely Low Maintenance Costs: Natural materials are corrosion-resistant and wear-resistant, eliminating the need for rust prevention and regrinding maintenance required for metal components. The annual maintenance cost is less than 1/10 of that of metal components. The positioning holes are highly compatible with tooling, enabling repeated adaptation to multiple generations of tooling and reducing tooling development costs by 40%.

Full-Dimensional Customization Services

• 3D Structure Customization:

◦ Datum Surface Customization: Quantity, position, and size of flat/side/step surfaces (step height: 5-200mm, tolerance ±0.003mm);

◦ Positioning Hole Customization: Layout of 3D positioning holes (flat/side/step surfaces), aperture (φ6-φ20mm), hole spacing (standard 50/100mm or non-standard);

◦ Station Customization: Number of multi-stations (2-12), station size, station separation method (datum blocks/grooves).

• Dimension and Material Customization:

◦ Dimension Customization: Tooling components: 500×300×100mm ~ 4000×2000×800mm; Multi-station bases: 1000×600×150mm ~ 6000×3000×1000mm. Super-large splicing is supported (precision at splicing joints ≤ 0.008mm);

◦ Material Selection: Jinan Green granite (Grade 00) for ultra-precision scenarios (aviation/semiconductors); Marble (Grade 0) for conventional scenarios; Composite granite (cost-effective) for cost-sensitive scenarios.

• Function and Service Customization:

◦ Function Enhancement: Anti-static coating (semiconductors), anti-corrosion coating (harsh environments), wear-resistant nano-coating (high-frequency use), scale marks (auxiliary positioning);

◦ Supporting Services: Providing collaborative design of tooling and components (optimizing positioning solutions based on customer tooling drawings), on-site installation and calibration (3D precision calibration + horizontal adjustment), and tooling test assembly verification;

◦ After-Sales Guarantee: 3-year free warranty for granite components / 2-year warranty for marble components, lifelong 3D precision calibration service, 24-hour response to emergency failures, and provision of backup tooling components to support continuous production.