Cast Iron Inspection Cube

Technical Parameter

A cast iron inspection cube is a high-precision measuring tool widely used in metrology and manufacturing quality control, crafted from high-grade cast iron for exceptional stability and accuracy. Its cubic shape, with precisely machined surfaces and edges, serves as a reliable reference standard for calibrating measuring instruments and verifying workpiece dimensions.

Structural Features & Material Advantages

Typically ranging from 50mm to 300mm in side length, the cube features six mutually perpendicular faces, each ground and lapped to achieve ultra-smooth surfaces with low flatness deviation (often within 0.002mm per 100mm). Made from seasoned cast iron, it boasts excellent dimensional stability, high rigidity, and resistance to thermal deformation, ensuring consistent performance even in varying workshop environments. Internal stress relief treatments during manufacturing further enhance its long-term accuracy retention.

Working Principle & Functions

As a reference standard, the cube provides known, precise dimensions for calibrating devices like coordinate measuring machines (CMMs), dial indicators, and height gauges. Its orthogonal faces serve as datum planes for checking squareness, parallelism, and flatness of workpieces or machine tool components. Operators can verify measurement accuracy by comparing instrument readings against the cube’s certified dimensions.

Applications & Specifications

Widely used in aerospace, automotive, and precision engineering workshops, it ensures measurement reliability in production and quality inspection processes. Certified by metrology laboratories, it comes with detailed calibration reports specifying dimensional tolerances, flatness, and squareness values. Regular recalibration maintains its accuracy, making it an indispensable tool for maintaining manufacturing precision and product quality.