Standard number: GB/T 2209- 199 1

V-shaped block is manufactured according to JB/T8047-95 standard, also known as V-shaped frame. There are three commonly used V-shaped irons, one V-shaped iron and five V-shaped irons. V-shaped block adopts high quality HT200-250. The materials of cast iron V-blocks can be divided into ductile iron and gray iron, which are supplied in pairs and are mainly used for the detection, marking, calibration and clamping of precision shaft parts.

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Classification of V-blocks: check V-blocks, cross V-blocks, multi-port V-blocks and single-port V-blocks.

Purpose of V-shaped block: it is used for checking, correcting and marking the shaft, and also for checking the verticality and parallelism of the workpiece. Inspection, marking, calibration and clamping in the processing of precision shaft parts.

V-shaped blocks should not have cracks, sand holes, slag inclusions and other defects that affect the use and appearance.

The V-shaped block is made of alloy tool steel (such as GCrl5) or other materials with similar properties, and its working surface hardness should not be lower than 664HV (or 58HRC).

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