Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1977-10-19
1979-05-15
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
5116574, B24B 4910
Patent
active
041540247
ABSTRACT:
Apparatus for detecting irregularities in an automated machine grinding procedure, the grinding machine including a workpiece, a chuck for holding the workpiece, and a grinding wheel controllably applied to the workpiece for removing a predetermined amount of material therefrom. A vibration-sensitive device mounted at a predetermined distance from the workpiece location converts mechanical vibration resulting from the interaction of the workpiece and the grinding wheel into electrical signals. The magnitude of the electrical signals is directly proportional to the level of vibration such that excessive vibration, resulting from irregularities in the grinding procedure, results in an increased electrical signal magnitude. A predetermined electrical signal magnitude is detected and in response thereto associated control circuitry is operated which terminates the grinding procedure. The grinding procedure is terminated during the grinding cycle but before the workpiece is rejected from the grinding chuck thereby ensuring that manual intervention can be utilized to check the accuracy of the workpiece before rejection. The vibration level, to which the detection circuitry is responsive, can be preset in response to control signals from the grinding machine.
REFERENCES:
patent: 2023494 (1935-12-01), Strieby
patent: 2340843 (1944-02-01), Bailey
patent: 2504026 (1950-04-01), Krause
patent: 2866301 (1958-12-01), Koulicovitch
patent: 3095532 (1963-06-01), Floyd
patent: 3160870 (1964-12-01), Randall
Schatz Federal Bearings Co. Inc.
Whitehead Harold D.
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