Grinding machine

Abstract

A grinding machine enabling the easy maintenance and inspections of mechanisms arranged therein, an increase in visibility when the states of a workpiece and a grinding wheel are confirmed, and the easy loading/unloading of the workpiece and the easy replacement of the grinding wheel. The grinding machine comprises a workpiece supporting/driving device, a wheel work head, a wheel head feeder, a coolant supply unit, a cover covering internal devices such as the workpiece supporting/driving device, the wheel work head, the wheel head feeder, and the coolant supply unit, and an open/close door formed at a part of the working space side upper surface of the cover and allowing at least the loading/unloading of the workpiece and the replacement of the grinding wheel.

1 . A grinding machine, comprising:
 a workpiece supporting/driving device anteriorly mounted on a bed, and supporting a workpiece to be rotatably driven;   a grinding wheel head comprising a bearing portion supporting a wheel spindle to be rotatably driven on which a grinding wheel is mounted, and a base mounted over the bed to be relatively movable to the workpiece through a grinding wheel head sliding mechanism;   a grinding wheel head feeder moving the grinding wheel head forward or backward to the workpiece supporting/driving device;   a coolant supply unit supplying a coolant to a working area in which the grinding wheel grinding processing the workpiece;   a cover covering internal devices such as the workpiece supporting/driving device, the grinding wheel head, the grinding wheel head feeder, the coolant supply unit; and   an open/close door formed on a part of an upper surface in working space side of the cover, being capable of at least loading/unloading of the workpiece and replacing the grinding wheel.   
   
   
       2 . The grinding machine according to  claim 1 , wherein:
 the cover comprises an upward open/close door or a sliding open/close door at least a part of the upper surface.   
   
   
       3 . The grinding machine according to  claim 2 , wherein:
 the open/close door is formed on the upward open/close door or the sliding open/close door.   
   
   
       4 . The grinding machine according to  claim 2 , wherein:
 the open/close door is formed within a region of not less than 200 mm and not more than 700 mm from the front face of machine, and not less than 900 mm and not more than 1100 mm from a floor face.   
   
   
       5 . The grinding machine according to  claim 1 , wherein:
 the open/close door comprises large size enough for a part of the workpiece to be visible in the workpiece supporting direction, and the open/close door comprises large size as a length in a sliding direction of the grinding wheel head enough for a part of the grinding wheel to be visible from the open/close door in the sliding direction of the grinding wheel head at the stop of the grinding work.   
   
   
       6 . The grinding machine according to  claim 1 , wherein:
 the open/close door comprises the size larger than the maximum length of the workpiece in the workpiece supporting direction and larger than the maximum diameter of the grinding wheel head in the sliding direction.   
   
   
       7 . The grinding machine according to  claim 1 , wherein:
 the workpiece comprises a rotation center position at not less than 200 mm and not more than 400 mm from the front face of machine, and comprises a rotation center position at not less than 850 mm and not more than 1000 mm from the floor face.   
   
   
       8 . The grinding machine according to  claim 1 , wherein:
 the wheel spindle comprises a center position thereof at not less than 250 mm and not more than 500 mm from the front face of machine, and at not less than 850 mm and not more than 1000 mm from the floor face.   
   
   
       9 . The grinding machine according to  claim 7 , wherein:
 the open/close door is formed on a region in which the workpiece or the grinding wheel head is replaceable in an open condition.   
   
   
       10 . The grinding machine according to  claim 1 , wherein:
 the grinding machine comprises a height of not less than 900 mm and not more than 1100 mm from the floor face.   
   
   
       11 . The grinding machine according to  claim 1 , wherein:
 the grinding wheel comprises an outer diameter of not less than 100 mm and not more than 200 mm, and comprises CBN grinding wheel having aluminum or titanium disk as a core.   
   
   
       12 . A grinding machine, comprising:
 a workpiece supporting/driving device anteriorly mounted on a bed, and supporting a workpiece to be rotatably driven;   a grinding wheel head comprising a bearing portion supporting a wheel spindle to be rotatably driven on which a grinding wheel is mounted, and a base mounted over the bed to be relatively movable to the workpiece through a grinding wheel head sliding mechanism;   a grinding wheel head feeder moving the grinding wheel head forward or backward to the workpiece supporting/driving device;   a coolant supply unit supplying a coolant to a working area in which the grinding wheel grinding processing the workpiece; and   a cover covering internal devices such as the workpiece supporting/driving device, the grinding wheel head, the grinding wheel head feeder, the coolant supply unit, and formed below a height of an arm turning portion just proximal to a handling portion of a working robot performing a lift up/down operation, so that a loading/unloading the workpiece and a replacement of the grinding wheel can be conducted from a working space in a front face, centering around the lift up/down operation in the internal portion of the grinding machine.   
   
   
       13 . The grinding machine according to  claim 12 , wherein:
 the cover comprises an open/close door within a region in which the lift up/down operation can be performed.   
   
   
       14 . The grinding machine according to  claim 12 , wherein:
 the loading/unloading of the workpiece, the replacement of the grinding wheel, and the lift up/down operation are conducted by the robot.   
   
   
       15 . The grinding machine according to  claim 14 , wherein:
 the cover is formed below the height of the turning portion of the robot.   
   
   
       16 . A grinding machine, comprising:
 a workpiece supporting portion supporting a workpiece to be processed on a first rotating shaft;   a grinding wheel supporting portion supporting a grinding wheel to process the workpiece on a second rotating shaft;   a side cover enclosing the workpiece supporting portion and the grinding wheel supporting portion from the side;   a upper cover enclosing a first opening portion formed on the upper side by the side cover; and   an open/close member formed on a working space side of the upper cover, to open/close a second opening portion for a loading/unloading of the workpiece, and a replacement of the grinding wheel; and   the second opening portion is formed on the upper cover, so that a straight line perpendicular to the first and second turning shafts in a center position thereof comprises a certain inclined angle to a floor face.   
   
   
       17 . The grinding machine according to  claim 16 , wherein:
 the second opening portion is formed on the upper cover, so as to comprise an inclined angle of 45 degrees to 75 degrees as the certain inclined angle.   
   
   
       18 . The grinding machine according to  claim 8 , wherein:
 the open/close door is formed on a region in which the workpiece or the grinding wheel head is replaceable in an open condition.