The cast iron frame is manufactured according to GB4972-85 standard, made of HT200 material, and is a four sided prism. One of the working surfaces of this product has a 90 degree groove, and the parallelism error of the V-shaped groove based on the bottom surface is less than 0.003. The perpendicularity error between the V-shaped groove and the two side surfaces of the frame is less than 0.002, and the distance error between the V-shaped groove and both sides of the frame is less than 0.003.

Application of cast iron work frame: mainly suitable for inspection and marking of shaft parts, V-frame is used for inspection, calibration, marking of shaft workpieces, and can also be used to inspect the verticality and parallelism of workpieces.