The correct usage method of cast iron platform

1. Reference plane for measuring the height of cast iron platform: Place the object to be measured and the measuring table holder on the cast iron platform for height comparison measurement, and then compare its height with the standard block gauge. 2. The reference plane for measuring the parallelism of cast iron platform: fix the gauge seat, and then make the gauge pointer touch above the surface of the object to be measured. Move the object to check the parallelism between the workpiece surface and the platform surface. 3. Reference surface for angle measurement of cast iron platform: Using the cast iron platform as a reference surface, combined with a sine rod and angle gauge, angle measurement can be carried out. 4. The reference surface for marking on the cast iron platform: The marking work can be carried out according to the dimensions of the working drawing. The quality of cast iron and heat treatment on cast iron platforms have a significant impact on their performance, or the working surface may deform due to residual large internal stresses; Or due to the inability to maintain accuracy; Or due to difficulty in scraping, roughness with small values cannot be obtained.