To provide a device and a method for working a minute recess by which a minute recess of high accuracy is efficiently formed, and further by which the reduction of manufacturing cost is achieved.
The device has a composition provided with: an arm 2 which rotatably holds a forming roller 1; a housing 3 which holds the arm 2 together with the forming roller 1 in a way that they are movable forward or backward relative to a surface F to be worked; a load applying means 4 which applies a load to the forming roller 1 brought into contact with the surface F to be worked; a load measuring means 5 which measures the load applied by the load applying means 4; and a displacement measuring means 6 which measures, in working, the distance between the arm 2 and the surface F to be worked. By the composition, a minute recess A is highly accurately and efficiently formed by controlling the pressing load of the forming roller 1 to the surface F to be worked, and a difference in the surface hardness of the surface F to be worked is determined based on the measured value of the displacement measuring means 6.
| WO/2002/072307 | METHOD AND MEANS FOR PROCESSING BUTT WELDS |
| WO/2005/058546 | FIXED ROLLER HEAD FOR SPLIT-PIN CRANKSHAFTS |
NAKAYAMA TATSUOMI
SAITO MAMORU
WATANABE HIDENORI
TAKASHIMA KAZUHIKO
OTA MINORU
