Cast Iron Surface Plate

Cast Iron Surface Plate,also known as cast iron flat plate,is a kind of precision measuring tool and workbench widely used in mechanical processing,inspection,assembly and other fields.Here is a detailed introduction:

Structural Characteristics

Material:High-quality cast iron,such as HT200 or HT300,is usually adopted.Cast iron has excellent wear-resistance,shock-absorption and dimensional stability.It can ensure the high precision of the surface plate during long-term use.

Surface:The working surface of the cast iron surface plate is finely machined to achieve a high level of flatness.The flatness tolerance can reach±0.05mm/m-±0.01mm/m or even higher.The surface roughness is typically between Ra0.8-Ra3.2μm,providing an accurate positioning and measurement reference for workpieces.

Applications

Machining:In machining workshops,it is often used as an extension of the machine tool worktable or as an independent processing platform.Workpieces can be directly installed on the surface plate,and T-slots or other clamping devices are used for positioning and clamping.Then,machining operations such as milling,boring and drilling can be carried out to ensure machining accuracy and the positional accuracy between workpieces.

Inspection:It serves as a measurement reference platform for detecting the dimensional accuracy,form accuracy and position accuracy of workpieces.Measuring tools such as dial indicators and micrometers are installed on the surface plate to measure workpieces and determine whether they meet the design requirements.Additionally,it can be used to calibrate measuring tools and instruments to ensure their accuracy.

Assembly:During product assembly,the cast iron surface plate can be used as an assembly platform.Various components are placed on the surface plate according to the design requirements,and T-slots or other positioning devices are used for accurate positioning and fixation.This facilitates the assembly,debugging and inspection of components,ensuring the assembly quality of products.

Accuracy Classes

According to National Standards:The accuracy classes of cast iron surface plates are divided into 00-class,0-class,1-class,2-class and 3-class.The 00-class has the highest accuracy,and the 3-class has the lowest.Different accuracy classes are suitable for different working scenarios.00-class and 0-class surface plates are usually used in high-precision metrology rooms and laboratories.1-class and 2-class are suitable for general-precision mechanical processing and inspection.3-class is used in occasions with relatively low accuracy requirements.

Accuracy Retention:The accuracy retention of the surface plate is one of its important performance indicators.High-quality cast iron surface plates are subjected to processes such as aging treatment and quenching to eliminate internal stress and improve material stability.This ensures the stability of the surface plate's accuracy during long-term use.Meanwhile,reasonable use and maintenance also play a crucial role in maintaining the accuracy of the surface plate.

Maintenance

Daily Maintenance:After use,the surface of the surface plate should be promptly cleaned of debris,iron filings,oil stains,etc.to keep it clean.Avoid knocking and colliding on the surface plate to prevent damage to its surface accuracy.

Regular Maintenance:Regularly lubricate the surface plate by applying anti-rust oil or lubricating oil to prevent rust.Check and calibrate the accuracy of the surface plate at regular intervals(such as every six months or a year).If there is any accuracy deviation,it should be adjusted and repaired in a timely manner.

Storage Environment:The surface plate should be stored in a dry and ventilated indoor environment,away from moisture and direct sunlight.If it is not used for a long time,the surface of the surface plate should be wiped clean,coated with anti-rust oil,and covered with a protective cloth to prevent dust and debris from falling on it.