Centerless grinding machine is a type of grinding machine that does not require a centering device or a fixture. It is used for grinding cylindrical parts, such as rods, bearings, and bushings, without the need for a center point. The workpiece is held between two wheels, a grinding wheel and a regulating wheel, and is rotated by the regulating wheel as it moves towards the center of the grinding wheel. The grinding wheel removes material from the workpiece while the regulating wheel controls the speed and feed rate of the workpiece.
A centerless grinding machine consists of several components, including:
1. Grinding wheel - the primary wheel used for grinding the workpiece.
2. Regulating wheel - the secondary wheel used to control the speed and feed rate of the workpiece.
3. Work blade - the part that supports the workpiece during grinding.
4. Coolant system - to keep the grinding wheel from overheating and reduce friction.
5. Dresser - to shape the grinding wheel for different operations.
6. Automation - modern centerless grinding machines utilize computer control to automate the grinding process and reduce operator input.
7. Gauge - to measure the diameter of the workpiece during grinding.
8. Infeed system - to control the amount of material removed from the workpiece.
9. Truing and balancing system - to ensure the grinding wheel is true and properly balanced.
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