Grinding Method
Grinding is a machining process that uses an abrasive to wear away at a material to alter its shape and size. Grinding is typically used to finish workpieces that have already been machined by other methods. This process can be used to grind both metal and non-metal materials.
Grinding methods can be divided into two categories, grinding with an abrasive wheel and lapping. Abrasive wheel grinding is the most widely used method and is often utilized by machinists in workshops and at home. This type of grinding is commonly used to grind both metallic and non-metallic materials. In this process, a grinding wheel is attached to a grinding machine, which rotates at high speeds and uses the abrasive material to grind away at the material.
Lapping, on the other hand, is a precision method that produces an even finish by rubbing two workpieces together with an abrasive material between them. This type of grinding is commonly used when accuracy is paramount and produces a very smooth finish. Unlike abrasive wheel grinding, lapping can produce a finished product in one stage.
The type of material being worked on and the desired finish dictate the materials used for grinding and the type of process used. For example, materials that are very hard may need a special grinding wheel, while softer materials may require a lapping process. Additionally, metals may need to be cooled with cooling liquids during the grinding process.
To get a precise finish the operator must ensure the grinding wheel is in contact with the material at the correct speed and depth. Poor contact with the material can lead to a rough finish.
Grinding machines come in many shapes and sizes, and can be powered by electricity or compressed air. Surfaces can be manually or computer operated to produce surfaces in a wide range of sizes and shapes. Computer-operated machines are commonly used for large-scale grinding operations.
The cost of grinding depends on the materials used and the process used. Small projects can be completed with hand-held grinders, while larger projects require more complex grinding machines and machines designed to hold larger grinding materials.
In the majority of cases, grinding is used as the last step in the machining process to produce a desired part or product. Grinding is used to produce a wide range of parts from medical instruments to automotive parts, and even microchips. By adapting the proper grinding methods for the material being worked on, precision parts can be produced. Grinding is essential for many manufacturing operations in todays factories and continues to be used in new technologies.
