Grinding method

Abstract

It is provided that a grinding method of a rotating workpiece W having a cylindrical part and at least one end face beside the cylindrical part. The grinding wheel 30 has a rotational axis parallel to a rotational axis of the workpiece W and has an external surface 30 FM, at least one side surface 30 SM and at least one R-part 30 KM between the external surface 30 FM and the side surface 30 DM. The grinding wheel 30 is moved backward in oblique direction to the end face to grind the end face for rough grinding in a process [ 1] . The grinding wheel is moved forward perpendicular to the rotational axis of the workpiece to grind the end face for finish grinding in a process [ 2 a ] and to grind the cylindrical part for rough grinding in a process [ 2 b].

1 . A grinding method of a rotating workpiece having a cylindrical part and at least one end face beside the cylindrical part with a rotating grinding wheel which relatively moves to the workpiece, wherein the grinding wheel has a rotational axis parallel to a rotational axis of the workpiece and has an external surface parallel to its rotational axis, at least one side surface perpendicular to its rotational axis and at least one R-part between the external surface and the side surface, the grinding method comprises processes of:
 setting the grinding wheel close to the end face of the workpiece and moving the grinding wheel backward in oblique direction to the end face to grind the end face for rough grinding by the side surface; and   moving the grinding wheel forward perpendicular to the rotational axis of the workpiece to grind the end face for finish grinding by the R-part and to grind the cylindrical part for rough grinding by the R-part and the external surface.   
   
   
       2 . The grinding method according to  claim 1 ,
 wherein the grinding wheel inwardly has a back taper surface connected with the side surface, and wherein the back taper surface is used for the rough grinding of the end face.   
   
   
       3 . A grinding method of a rotating workpiece having a cylindrical part and two end faces at both sides of the cylindrical part with a rotating grinding wheel which relatively moves to the workpiece, wherein the grinding wheel has a rotational axis parallel to a rotational axis of the workpiece and has an external surface parallel to its rotational axis, two side surfaces perpendicular to its rotational axis and two R-parts between the external surface and the side surfaces, the grinding method comprises processes of:
 setting the grinding wheel close to one of the end faces of the workpiece and moving the grinding wheel backward in oblique direction to the one end face to grind the one end face for rough grinding by one of the side surfaces;   moving the grinding wheel forward perpendicular to the rotational axis of the workpiece to grind the one end face for finish grinding by one of the R-parts and to grind a part of the cylindrical part close to the one end face for rough grinding by the one R-part and the external surface;   setting the grinding wheel close to the other end face of the workpiece and moving the grinding wheel backward in oblique direction to the other end face to grind the other end face for rough grinding by the other side surface;   moving the grinding wheel forward perpendicular to the rotational axis of the workpiece to grind the other end face for finish grinding by the other R-part and to grind a part of the cylindrical part close to the other end face for rough grinding by the other R-part and the external surface; and   moving the grinding wheel parallel to the rotational axis of the workpiece for finish grinding of the cylindrical part by the one R-part and the external surface.   
   
   
       4 . The grinding method according to  claim 3 ,
 wherein the grinding wheel inwardly has a back taper surface connected with the side surface, and wherein the back taper surface is used for the rough grinding of the end face.   
   
   
       5 . A grinding method of a rotating workpiece having at least one end face with a rotating grinding wheel which relatively moves to the workpiece, wherein the grinding wheel has a rotational axis parallel to a rotational axis of the workpiece and has an external surface parallel to its rotational axis and at least one side surface perpendicular to its rotational axis, the grinding method comprises processes of:
 setting the grinding wheel close to the end face of the workpiece and moving the grinding wheel backward in oblique direction to the end face to grind the end face for rough grinding by the side surface; and   moving the grinding wheel forward perpendicular to the rotational axis of the workpiece to grind the end face for finish grinding by a boundary between the external surface and the side surface.   
   
   
       6 . The grinding method according to  claim 5 ,
 wherein the grinding wheel inwardly has a back taper surface connected with the side surface, and wherein the back taper surface is used for the rough grinding of the end face.