Grinding method and apparatus with metal removal rate control
AssigneeKabushiki Kaisha Daini Seikosha
InventorYouji Tatsumi
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Abstract
Grinding method and apparatus in which metal removal rate of workpieces is controlled to predetermined values at least during fine grinding. The metal removal is measured out by an in-process size detector, which measures the workpiece diameter under grinding, and is compared with one of the predetermined values directly or indirectly after being converted into metal removal-to-time rate. The deviation of metal removal from the predetermined value effects to control the infeed movement of an infeed table which displaces the grinding wheel to infeed relative to the workpiece.
Claims6
A grinding method with metal removal rate control comprising:
- continuously or intermittently measuring the rate of metal removal of a workpiece during a grinding operation;
- comparing the measured metal removal rate with a predetermined metal removal program value and providing a difference signal indicative of the difference between the actual metal removal rate from the program value;
- controlling the grinding operation in accordance with the difference signal to suppress the difference signal;
- measuring grinding tool deterioration during grinding;
- and selecting a lower predetermined program value of metal removal rate for determining the difference signal when the measured grinding tool deterioration exceeds a certain amount.
Dependencies are inferred from the claim text.