A honing tool has a tool body and shells disposed on the tool body. Honing stone sets each provided with two or more honing stones are provided. The shells each support one of the honing stone sets. Guide bars of the honing tool are placed against the bore and a portion of the bore is conically honed with decreasing stroke of the honing tool, wherein a lower reversing point of the honing tool remains substantially unchanged. Honing is terminated as soon as an upper reversing point has reached a predetermined terminal value. Alternatively, a portion of the bore is conically honed with a constant stroke of the honing tool, wherein reversing points of the stroke of the honing tool remain substantially unchanged and a feeding force pressing the honing stones against the bore is controlled as a function of a position of the honing tool in the bore.

A honing tool holder that provides a capability for automatically feeding the honing elements or stones when in the bore of a work piece, and for automatically stopping the feeding when a particular condition such as a bore size, is reached, so as to enable use of an in-process adjustable feed honing tool in a machine tool, machining center, or the like, lacking a feed mechanism or system. The holder can also include apparatus to automatically prevent feed past a limit. Both the feed force and feed limit can be adjustable, including by simple movements of the tool holder by the machine tool.

A honing tool holder that provides a capability for automatically feeding the honing elements or stones when in the bore of a work piece, and for automatically stopping the feeding when a particular condition such as a bore size, is reached, so as to enable use of an in-process adjustable feed honing tool in a machine tool, machining center, or the like, lacking a feed mechanism or system. The holder can also include apparatus to automatically prevent feed past a limit. Both the feed force and feed limit can be adjustable, including by simple movements of the tool holder by the machine tool.

A honing device includes a honing tool, a rotating main shaft to which the honing tool is fixed, an axial direction driver to cause the rotating main shaft to move in the Z-axis direction, a workpiece holder to hold a workpiece while a central axis of a processed hole of the workpiece and the a central axis of the rotating main shaft coincide with each other, and a holder drive unit to, by exerting a driving force on a portion of the workpiece holder corresponding to a point on an extension line of the central axis of the rotating main shaft in a direction along the central axis, cause the workpiece holder to move in a direction along the central axis.

A honing device includes a honing tool, a rotating main shaft to which the honing tool is fixed, an axial direction driver to cause the rotating main shaft to move in the Z-axis direction, a workpiece holder to hold a workpiece while a central axis of a processed hole of the workpiece and the a central axis of the rotating main shaft coincide with each other, and a holder drive unit to, by exerting a driving force on a portion of the workpiece holder corresponding to a point on an extension line of the central axis of the rotating main shaft in a direction along the central axis, cause the workpiece holder to move in a direction along the central axis.