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Grinding the end face of the spring

    In order to ensure the verticality of the spiral compression spring, and to keep the end faces of the two supporting rings in contact with other parts, reduce deflection and ensure the characteristics of the host (or parts and components). Both ends of the helical compression spring are generally grinded. This process is usually called a grinding spring. There are roughly three operation modes for grinding springs: manual grinding, semi-automatic grinding and automatic grinding.
    After the spring is ground, the ground part should be no less than 3/4 of the circumference, and the end thickness should be no less than 1/8 of the metal diameter (1/4 is better). The surface roughness of the grinding surface and Ra≤12.5/μm.

    Grinding spring should be based on the size of the spring production batch to select the equipment and operation mode. The equipment used for manual grinding of springs is usually an ordinary grinder with appropriate fixtures and auxiliary tools. The equipment and tooling are relatively simple, but the labor intensity is high and the productivity is low, so it is suitable for the production of many varieties and small batches. In mass production, the spring end face grinder is used to grind the end face of the spring.

    There are two types of spring end face grinders: one is a horizontal grinder (Figure 1a); the other is a vertical grinder (Figure 1b). There are many types of domestic spring end grinders, which can be selected according to the sample.