Honing tool with honing-stone-restoring system

Abstract

A honing tool having an at least partially tubular tool body and includes a cutting region with at least one honing-stone receiving opening running through the tool body from inside outwards for receiving an individual honing stone. The dimensions of the honing-stone receiving opening and of the honing stone are sized and configured so the honing stone can be received between within the honing-stone receiving opening so as to be radially movable and substantially without substantial play in the circumferential direction of the tool body. The honing tool has a honing-tool-restoring system which comprises at least one resilient restoring element. When the honing stone is installed, the honing-stone-restoring system engages with the honing stone such that a radial force from outside acts inwards, pressing the honing stone against die feed element.

1 . A honing tool comprising
 an at least partially tubular tool body which has a cutting region with at least one honing stone receiving opening which runs from inside of the tool body outwards for receiving a honing stone,   wherein dimensions of the honing stone receiving opening and of the honing stone are matched to one another in such a way that the honing stone is received between delimiting surfaces of the honing stone receiving opening to be radially movable and substantially free of play in a circumferential direction of the tool body, and   wherein the honing stone has an oblique surface on an inner side projecting into the interior of the tool body,   a feed element which is guided in the tool body and which has an oblique surface corresponding to the oblique surface of the honing stone, so that an axial displacement of the feed element towards an end of the tool body remote from a spindle causes a radial outward displacement of the honing stone,   a honing stone restoring system which comprises at least one elastic restoring element which, in the installed state of the honing stone, acts on the honing stone in such a way that a radial force acts from the outside inwards and presses the honing stone in the direction of the feed element,   
       characterized in that
 the elastic restoring element is C-shaped and partially surrounds an outer side of the tool body in the circumferential direction. 
 
     
     
         2 . The honing tool as claimed in  claim 1 , further characterized in that
 the elastic restoring element surrounds the outer side of the tool body by more than 180° and by less than 270°, in particular by about 225°, and/or   the elastic restoring element has an opening angle of more than 90° and less than 180° in a relaxed state.   
     
     
         3 . The honing tool as claimed in  claim 1 , further characterized in that
 the elastic restoring element is a bent wire part, wherein the bent wire part preferably consists of a spring steel.   
     
     
         4 . The honing tool as claimed in  claim 1 , further characterized in that
 an end portion of the elastic restoring element facing the honing stone is bent, preferably radially inwards, wherein the elastic restoring element can be connected to the honing stone via this bent end portion.   
     
     
         5 . The honing tool as claimed in  claim 1 , further characterized in that
 the honing stone has a support strip and a cutting coating applied to a radially outer side of the support strip, and   the elastic restoring element can be connected to the support strip.   
     
     
         6 . The honing tool as claimed in  claim 1 , further characterized in that
 the honing stone has a recess, preferably a radial bore, on an outer side, into which one end of the elastic restoring element can be hooked.   
     
     
         7 . The honing tool as claimed in  claim 1 , further characterized in that
 the elastic restoring element has an internal diameter which, in a relaxed state, is smaller than the external diameter of the outer side of the tool body against which the elastic restoring element bears.   
     
     
         8 . The honing tool as claimed in  claim 1 , further characterized in that
 the honing tool has at least one fluid supply channel in the tubular tool body for supplying coolant and/or lubricant to the cutting region, wherein the fluid supply channel opens out into a cavity in which the honing stone and the feed element are also located.   
     
     
         9 . The honing tool as claimed in  claim 1 , further characterized in that
 the honing tool is a single-stone honing tool.   
     
     
         10 . A honing stone for use in a honing tool which has a tool body which is at least partially tubular and has a cutting region with at least one honing stone receiving opening which runs from the inside of the tool body outwards for receiving a honing stone,
 wherein dimensions of the honing stone and dimensions of the honing stone receiving opening are matched to one another in such a way that the honing stone can be received between delimiting surfaces of the honing stone receiving opening to be radially movable and substantially free of play in the circumferential direction of the tool body, and   wherein the honing stone has an oblique surface on an inner side projecting into the interior of the tool body,   characterized in that   the honing stone has a recess, in particular a radial bore, on an outer side for receiving a bent end portion of an elastic, C-shaped restoring element,   wherein the elastic restoring element is configured to partially surround an outer side of the tool body in the circumferential direction when the honing stone is installed and to engage thereon with a pressing force generated by expansion in such a way that the honing stone is held in the honing stone receiving opening.   
     
     
         11 . A retrofit kit for manufacturing a honing tool as claimed in  claim 1 , said kit comprising:
 at least one honing stone, which fits into a honing stone opening in a tool body of the honing tool;   a number of C-shaped elastic restoring elements which are adapted to the honing stone and the tool body in such a way that a C-shaped restoring element can be mounted on the tool body by clipping on and, in the mounted state, partially surrounds an outer side of the tool body in the circumferential direction and acts on the honing stone in such a way that a radial force acts from the outside inwards;   wherein said honing stone has a tool body which is at least partially tubular and has a cutting region with at least one honing stone receiving opening which runs from the inside of the tool body outwards for receiving a honing stone,   wherein dimensions of the honing stone and dimensions of the honing stone receiving opening are matched to one another in such a way that the honing stone can be received between delimiting surfaces of the honing stone receiving opening to be radially movable and substantially free of play in the circumferential direction of the tool body, and   wherein the honing stone has an oblique surface on an inner side projecting into the interior of the tool body,   characterized in that   the honing stone has a recess, in particular a radial bore, on an outer side for receiving a bent end portion of an elastic, C-shaped restoring element,   wherein the elastic restoring element is configured to partially surround an outer side of the tool body in the circumferential direction when the honing stone is installed and to engage thereon with a pressing force generated by expansion in such a way that the honing stone is held in the honing stone receiving opening.