Improve the surface quality of scraping and grinding, take into account and check the shape and position error, and ensure the accuracy of the cast iron platform (the flatness of the cast iron plate should be below 0.01mm/500mm, and the surface roughness should be Ra0.8～Ra1.6), and the use environment of the cast iron plate should be improved. (temperature, humidity, avoid bump, corrosion) pay attention!

1. About the support of cast iron plate

Main fulcrum: The part of the flat plate that is used as the main support when it is in contact with the installation base surface or special bracket during processing, verification and use. The supporting force at this time is a statically indeterminate state.

Auxiliary fulcrum: The fulcrum is added to prevent overturning due to the offset of the load center or harmful deformation due to excessive load when the plate is in use. The support reaction force on the auxiliary fulcrum should be the support reaction force on main fulcrum.

2. Accuracy evaluation of cast iron platform

Accuracy levels are divided into 00, 0, 1, 2, and 3-level plates, of which level 2 and above are inspection plates, and level 3 is scribed plates.

The cast iron plate working surface should adopt the scraping process, and the planing process can also be used for the "3" flat plate working surface. The surface roughness of the planed working surface should be no more than 5um according to the arithmetic mean deviation of the contour.

Cast iron slabs should be stabilized and demagnetized. Basic flatness: It can be divided into three levels: laboratory level (Reference), calibration level (Master) and tool room level (Working).

cast iron plates

Jinggong Measuring Tools Producing Co., Ltd is specializing in manufacturing and exporting all kinds of cast iron products，especially for cast iron floor plates, cast iron surface plates, cast iron clamping plates, cast iron angle plates, cast iron box table and other machine tool castings. The products have the features of reasonable design, stable structure, superior quality and competitive price.