Bending method and bending device

Abstract

The possibility of performing a bending process again on an area that has already been bent once is reduced. Provided is a bending device including two receiving sections disposed with a distance therebetween; a pressing section that presses a plate-like workpiece, which is supported in a bridged manner between the receiving sections, into a space between the receiving sections; an operable section that applies an external force for causing the pressing section to generate a pressing force; and a marker retaining section that is attached to at least one of the pressing section and the receiving section side and that retains a marker to be adhered to a pressed area of whichever one of surfaces of the workpiece by means of the pressing force.

1 . A bending method comprising:
 a setting step for setting a plate-like workpiece in a bridged manner between two receiving sections disposed with a distance therebetween; and   a pressing step for causing a pressing force to act on a pressing section so as to press the workpiece set between the receiving sections into a space between the receiving sections,   wherein the pressing step includes causing a marker to adhere to a pressed area of whichever one of surfaces of the workpiece, the marker indicating that the area has been pressed.   
     
     
         2 . The bending method according to  claim 1 ,
 wherein the pressing step includes disposing the marker at the pressing section side of the workpiece and causing the marker to adhere to the surface of the workpiece by means of the pressing force.   
     
     
         3 . The bending method according to  claim 2 ,
 wherein the pressing step includes pressing against the workpiece by using the pressing section, which retains the marker on a surface thereof at the workpiece side.   
     
     
         4 . The bending method according to  claim 1 ,
 wherein the pressing step includes disposing the marker at the receiving section side of the workpiece and causing the marker to adhere to the surface of the workpiece by means of the pressing force.   
     
     
         5 . The bending method according to  claim 1 ,
 wherein the workpiece is an osteosynthesis plate, and   wherein the marker is composed of a biocompatible material.   
     
     
         6 . A bending device comprising:
 two receiving sections disposed with a distance therebetween;   a pressing section that presses a plate-like workpiece, which is supported in a bridged manner between the receiving sections, into a space between the receiving sections;   an operable section that applies an external force for causing the pressing section to generate a pressing force; and   a marker retaining section that is attached to at least one of the pressing section and the receiving section side and that retains a marker to be adhered to a pressed area of whichever one of surfaces of the workpiece by means of the pressing force.   
     
     
         7 . The bending device according to  claim 6 ,
 wherein the marker retaining section is detachably attached to at least one of the pressing section and the receiving section side.   
     
     
         8 . The bending device according to  claim 6 ,
 wherein the marker is formed of powder or liquid,   wherein the marker retaining section has a porous structure that is capable of retaining the marker within pores.   
     
     
         9 . The bending device according to  claim 6 ,
 wherein the marker retaining section is attached to a surface at the receiving-section side of the pressing section.   
     
     
         10 . The bending device according to  claim 6 ,
 wherein the marker retaining section is attached between the two receiving sections.   
     
     
         11 . The bending device according to  claim 6 ,
 wherein the workpiece is an osteosynthesis plate, and   wherein the marker is composed of a biocompatible material.