Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1986-08-04
1988-08-09
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51 41, 51 84R, 51283E, B24B 717
Patent
active
047619180
ABSTRACT:
A grinding apparatus suitable for use in forming a straight groove on the surface of a work to be processed includes a carriage provided to be movable along a predetermined path in a reciprocating manner between a first end position and a second end position. Each of the first and second end positions is defined as a loading/unloading position. A pair of finish grinding discs is located at the center of and on both sides of the predetermined path. A pair of rough grinding discs is located between the first end and center positions of the path and another pair of rough grinding discs is similarly located between the second end and center positions of the path. Each of the grinding discs is shiftable in positions between advanced and retracted positions in the direction transverse to the predetermined path. Thus, while the work is moved along the predetermined path reciprocatingly, the work is first subjected to rough grinding and then finish grinding, thereby forming a pair of grooves on opposite surfaces at the same time.
REFERENCES:
patent: 1876178 (1932-09-01), Teschel et al.
patent: 2170687 (1939-08-01), Johnson
patent: 2252877 (1941-08-01), Baldenhofer
patent: 2869288 (1959-01-01), Bretscher
patent: 3305974 (1967-02-01), Wilson
patent: 4481739 (1984-11-01), Suzuki
MacDonald Thomas S.
MacPherson Alan H.
Nippon Thompson Co. Ltd.
Rose Robert A.
Schmidt Frederick R.
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