Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1978-09-11
1980-06-17
Whitehead, Harold D.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51101R, 51105SP, B24B 502
Patent
active
042077109
ABSTRACT:
A workpiece positioning apparatus 12 (FIG. 1) for positively locating a workpiece 14 with respect to a drive spindle 20 in a grinding machine is disclosed. The apparatus 12 is secured to the drive spindle 20 and provides a means for holding the workpiece 14 in a predetermined angular position with respect to the drive spindle during the grinding operation. The apparatus 12 includes an index surface 74 (FIG. 4) against which a key 42 on the workpiece is pressed by a rotatable drive element or sleeve 80. To facilitate installation of the workpiece 14 in the grinding machine 10 (FIG. 1 ) the drive element 80 (FIG. 4) is rotated to provide a space between it and the index surface 74. When the workpiece 14 has been installed in the machine 10, the drive element 80 is rotated in the opposite direction (FIG. 5 ) to move the key 42 on the workpiece into engagement with the index surface 74 on the workpiece positioning apparatus 12. Fluid pressure applied against the drive element 80 causes the drive element to rotate and holds the workpiece 14 in a fixed angular relationship with the apparatus 12 and with the drive spindle 20 during rotation in the grinding machine 10.
REFERENCES:
patent: 2940227 (1960-06-01), Flohn
patent: 2984955 (1961-05-01), Price
patent: 3583108 (1971-06-01), Oishi
patent: 3667167 (1972-06-01), Happel
patent: 3769761 (1973-11-01), Ohsima
The Warner & Swasey Company
Whitehead Harold D.
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