Pintalevyitä

Pintalevyitä, also known as surface plates, are precision measuring tools used in manufacturing, machining, and inspection environments. They are characterized by their extremely flat and smooth surface, which serves as a reference plane for highly accurate measurements. Pintalevyitä are typically made from granite, cast iron, or ceramics, with granite being the most common choice due to its inherent stability and low thermal expansion.

The flatness of a pintalevyitä is crucial for its function. It is measured and certified to strict tolerances, often in microns. When a workpiece is placed on a pintalevyitä, its dimensions and geometry can be compared against the known flat surface of the plate. This allows for precise measurements of height, parallelism, perpendicularity, and other critical dimensions using various metrology instruments such as dial indicators, calipers, micrometers, and granite surface plate accessories like parallels and risers.

The primary purpose of a pintalevyitä is to provide a stable and accurate datum for inspection and measurement tasks. Even slight deviations in flatness can lead to significant errors in measurements. Therefore, pintalevyitä must be carefully handled, maintained, and calibrated regularly to ensure their continued accuracy. They are essential for quality control and ensuring that manufactured parts meet their specified tolerances.