Method and apparatus for supplying coolant in a grinding machine
AssigneeHitachi Seiki Co., Ltd.
InventorHideo Iwabuchi
Life of this patent
Estimating the term…
Abstract
In a method and an apparatus for supplying coolant in a grinding machine while the grinding machine grinds, a cooling nozzle and a cleaning nozzle are mounted on a moving member, and the moving member is moved in a direction identical with a first normal line, relative to the grinding wheel, at a first predetermined angle away from a reference straight line perpendicular to an axis of a main spindle. The reference straight line passes through a grinding point. Accordingly, the cooling nozzle injects the coolant with an injecting outlet port directed in a direction of a tangential line, of the grinding wheel, passing through the grinding point. The cleaning nozzle injects the coolant with an injecting outlet port directed in a direction of a normal line relative to the grinding wheel.
Claims12
A method for supplying coolant in a grinding machine, while said grinding machine grinds, which grinds a workpiece by rotating a grinding wheel mounted on a main spindle and by relatively moving the workpiece and the grinding wheel along at least three mutually transverse axes including a direction parallel with an axis of the main spindle, said method comprising the following steps of:
- mounting on a moving member at least one first nozzle, for cooling a grinding point at which the grinding wheel grinds the workpiece, and at least one second nozzle for cleaning a periphery of the grinding wheel;
- and
- moving said moving member in a direction substantially identical with a first normal line, relative to the grinding wheel, which is positioned at a first predetermined angle away from a reference straight line passing through the grinding point and being perpendicular to the axis of the main spindle,
- whereby said first nozzle injects said coolant with an injecting outlet port directed in a direction substantially identical with a tangential line, of the grinding wheel, passing through the grinding point, and
- said second nozzle injects said coolant with an injecting outlet port directed toward a point on the surface of the grinding wheel and in a direction within±30 degrees of the radial line from the axis of the grinding wheel through said point on the surface of the grinding wheel.
A method for supplying coolant in a grinding machine, while said grinding machine grinds, which grinds a workpiece by rotating a grinding wheel mounted on a main spindle and by relatively moving the workpiece and the grinding wheel along at least three mutually transverse axes including a direction parallel with an axis of the main spindle, a dresser supporting member for rotatably supporting at least one dresser for dressing the grinding wheel being moved relative to the main spindle in at least one direction perpendicular to the axis of the main spindle, said method comprising the following steps of:
- injecting, through at least one cooling nozzle for cooling a grinding point at which the grinding wheel grinds the workpiece, said coolant with an injecting outlet port always directed in a direction substantially identical with a tangential line, of the grinding wheel, passing through the grinding point;
- providing at least one auxiliary cooling nozzle for cooling the grinding point with an assistance on a moving unit, which moves in an opposite direction to a moving direction of the dresser supporting member and moves with the same moving amount as that of the dresser supporting member, wherein said auxiliary cooling nozzle is located at a position facing said cooling nozzle;
- and
- directing an injecting outlet port of said auxiliary cooling nozzle always in a direction substantially identical with the tangential line, of the grinding wheel, passing through the grinding point, and injecting said coolant to the grinding point from a substantially opposite direction to said cooling nozzle.
Dependencies are inferred from the claim text.