| 摘要 |
PROBLEM TO BE SOLVED: To obtain a production method of a plate like part in which joining a wire joint for a plate like part and a peripheral frame is strengthened, a required external form line is obtained by cutting off with a cutting tool of a nipper, etc., a number of the wire joints to be cut is reduced and a wire joint width is easily changed by changing a NC program. SOLUTION: In a production method in which many plate like parts 2 partially joined with plural wire joints respectively for a peripheral frame 6 is punched on a surface of a metal plate base material, the wire joints 5, which join the external shape line except corner parts/radius shaped parts of each the plate like part 2b and the peripheral frame 6, and the roof type inclined opening, in which part is positioned inside the external shape line of each plate like part, a narrow connection part width formed near the wire joint 5 remains and one of a roof type inclined face part is interposed to the corresponding wire joint, are provided, the part from the external shape line of the corresponding plate like part to the roof type opening 3 is cut.
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