行业组件数据 · 2026

花岗岩底座

Granite base for precision coordinate measuring machines providing ultra-stable reference surface

技术定义与适配语境
典型 花岗岩底座 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

A precision-engineered granite base serves as the foundational component in industrial coordinate measuring machines (CMMs), providing an exceptionally stable, vibration-dampening, and thermally stable reference surface for accurate dimensional measurements. Its natural granite composition ensures minimal thermal expansion and excellent dimensional stability over time, making it ideal for high-precision metrology applications where measurement repeatability and accuracy are critical.

组件规格

定义
A precision-engineered granite base serves as the foundational component in industrial coordinate measuring machines (CMMs), providing an exceptionally stable, vibration-dampening, and thermally stable reference surface for accurate dimensional measurements. Its natural granite composition ensures minimal thermal expansion and excellent dimensional stability over time, making it ideal for high-precision metrology applications where measurement repeatability and accuracy are critical.
工作原理
The granite base operates on principles of dimensional stability, vibration damping, and thermal inertia. Its dense crystalline structure absorbs vibrations from the environment and machine operations, while its low coefficient of thermal expansion minimizes dimensional changes with temperature fluctuations. The precisely lapped surface provides a geometrically stable reference plane against which all measurements are calibrated, ensuring measurement integrity throughout the operating range.
材料
Natural granite (typically black or gray granite with fine grain structure)Grade: Metrology-grade granite with specific density (>2.6 g/cm³) and hardness (Mohs 6-7)Surface finish: Lapped to ≤0.001 mm flatnessTreatment: Sealed with epoxy or polymer coating for moisture resistance
Hardness
Mohs 6-7
Standard sizes
500×500 mm to 2000×3000 mm
Weight capacity
Up to 5000 kg
Damping capacity
High (natural vibration damping)
Surface roughness
Ra ≤ 0.2 μm
Flatness tolerance
≤0.001 mm/m
Thermal expansion coefficient
5-8 × 10⁻⁶/°C
标准
ISO 10360ISO 230DIN 876ASME B89

行业分类与别名

花岗岩底座 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Improper handling during installation->Structural cracking or chipping->Use specialized lifting equipment, follow manufacturer handling guidelines, install on vibration-isolated foundation
Exposure to rapid temperature changes->Thermal stress leading to dimensional instability->Maintain stable environment (±1°C), implement gradual temperature transitions, use thermal insulation when necessary
Chemical contamination from cleaning agents->Surface degradation and measurement inaccuracies->Use only approved granite cleaners, implement regular cleaning protocols, train operators on proper maintenance

工业生态与工程逻辑

0
Surface contamination affecting measurements
1
Thermal shock from rapid temperature changes
2
Impact damage from dropped tools or components
3
Moisture absorption if improperly sealed
4
Structural cracking from improper handling

合规与检测

tolerance
Flatness: ≤0.001 mm/m, Parallelism: ≤0.002 mm, Surface finish: Ra ≤ 0.2 μm
test method
Laser interferometry, Electronic levels, Precision straightedges, Surface plate calibration per ISO 8512

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

Why is granite preferred over steel for precision machine bases?

Granite offers superior dimensional stability, better vibration damping, and lower thermal expansion compared to steel, making it ideal for precision measurement applications where environmental factors can affect accuracy.

How often does a granite base need calibration?

Granite bases typically require annual calibration under normal operating conditions, but frequency may increase with heavy usage or in environments with significant temperature fluctuations.

Can granite bases be repaired if damaged?

Minor surface damage can often be repaired through re-lapping, but significant structural damage usually requires replacement as granite's crystalline structure cannot be welded or fused effectively.

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CNFX Industrial Component Index · 机械和设备制造

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初步技术归类
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URN:CNFX:ME:UNIT:GRANITE_BASE