Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1988-01-27
1989-12-12
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51281C, B24B 2900
Patent
active
048858749
ABSTRACT:
A method serves for grinding two or more cams of a camshaft. Initially the camshaft is chucked in a mounting position between a driver of a work headstock seated to rotate about a first axis (C axis), and a footstock. Then the camshaft is rotated in a defined rotary angle/time relationship. A rotating grinding wheel is advanced in the direction of a second axis (X axis) extending perpendicularly to the said first axis (C axis), the movement of the rotating grinding wheel being directed towards a first cam to be ground. The rotary angle and length of travel (x) of the grinding wheel are adjusted in response to the polar coordinates of a nominal contour of the cam, supplied by a numerical control, while the grinding wheel is in engagement with the cam. Any deviation from a nominal process value is measured. The pre-determined length of travel is corrected by a correcting value (.DELTA.x) corresponding to the weighted deviation.
In order to compensate all influence that may lead to errors, with the least possible cost input, the dimensions of the contour of the cam ground first are measured. Any deviations between the values determined by measuring and the nominal values of the dimensions of the contour are determined, and the length of travel (x) is weighted with a correction factor. Finally, a second and subsequent cams are ground the same mounting condition.
REFERENCES:
patent: 3964210 (1976-06-01), Moritomo
patent: 4061952 (1977-12-01), Dinsdale et al.
patent: 4346535 (1982-08-01), Asano et al.
Wedeniswski, Horst Josef: "Prozessrechnergesteuertes Produktions--Nockenschleifen", Literature Werkstatt und Betrieb, 1985, vol. 8, pp. 443-448.
Wedeniwski, Horst Josef: "Rechnergestutzte Programmierung beim CNC-Nockenform-Schleifen", Literature Werkstatt und Betrieb, 1986, vol. 8, pp. 655-660.
Brill, J.; Chmielnicki, S.; Roos, G.: "CNC-Gesteuertes Nockenschleifen", Literature: wt Zeitschrift fur industrielle Fertigung, 1986, vol. 6, pp. 343-348.
Fortuna-Werke Maschinenfabrik GmbH
Hackler Walter A.
Rachuba Maurina
Schmidt Frederick R.
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