Granite Mechanical Components And Their Applications in Air Floating Tables

Scope of Application of Granite Mechanical Components

   Granite mechanical components serve as benchmark tools for precision inspection, widely used in various testing and inspection tasks. They are particularly suitable for flatness measurement and laboratory experiments. These components can be machined with grooves and various holes, such as through-holes, strip holes, threaded holes, T-grooves, U-grooves, etc. Granite mechanical components with grooves are also called granite components, including many non-standard flat plates.

After decades of dedication, we have accumulated rich experience in manufacturing granite platforms, earning a good reputation in the design, production, and maintenance of granite mechanical components. During design, we consider the usage environment and precision requirements. In high-precision inspection fields, our products have withstood market tests. Laboratory-level clients place high demands on granite mechanical components, and their trust in our products stems from consistent quality. According to Chinese standards, the precision of granite mechanical components is classified into Grade 2, Grade 1, and Grade 0.

The stone for manufacturing granite mechanical components is sourced from rock layers aged for hundreds of millions of years, ensuring stable morphology and minimal precision variation due to temperature differences.

Where are Granite Mechanical Components Applied?

1. Widespread Industrial Applications:Granite mechanical components are widely used in modern industries, including electronics, machinery, light industry, and manufacturing. Our designers have innovatively replaced traditional cast iron plates with granite platforms, machining holes and T-grooves to expand their applications.

2. Precision-Driven Design Considerations:The overall design must account for precision requirements. For example, Grade 1 components can be used at room temperature, while Grade 0 components require a constant-temperature workshop and should be placed in a thermostatic chamber for 24 hours before inspection.

3. Material Differentiation from Construction Granite:

◦ Granite platform density: 2.9–3.1 g/cm³

◦ Construction granite density: 2.6–2.8 g/cm³

◦ Concrete density: 2.4–2.5 g/cm³

Application in Granite Air-Float Platforms

Granite platforms, formed by natural stone and refined through manual lapping, achieve ideal precision. One unique application is in manufacturing granite air-float platforms, which integrate air-float devices. The air-float measurement system is a two-degree-of-freedom gantry device:

• Motion sliders run on granite guides, equipped with porous air-float bearings.

• Compressed air, filtered and regulated, ensures near-frictionless movement of sliders.

Precision Requirements and Processing

• High precision is required for granite air-float plates, necessitating multiple lapping processes to improve surface finish and flatness.

• Key steps include selecting lapping plates and abrasives, measuring with electronic levels, and repeated grinding.

Environmental factors like temperature and vibration significantly impact lapping and inspection. Tests show that flatness measurements at constant temperature and room temperature can differ by 3μm.