| 摘要 |
<p>PROBLEM TO BE SOLVED: To attain repairing which requires only replacing a divided piece and metal mold cost reduction by forming a plurality of divided pieces formed with groove parts at their jointed parts, out of adjacent divided pieces jointed to each other and formed side by side. SOLUTION: This device is constituted of divided pieces 1, 2 which are made of metal such as cemented carbide and divided into a plurality of pieces, and a square type frame body 3 made of metal such as cemented carbide. The divided piece 1 involves a plurality of groove parts 1e, and inclined end surfaces 1f at both end parts of it. The divided piece 2 positioned between divided pieces 1 involves a plurality of grooved parts 2e formed vertically at a surface to be the joining part 2d of its both side parts, and inclined end surfaces 2f at both end parts of it. The divided pieces 1, 2 are fitted by being pressured in the square type frame body 3 in such a condition as their joining parts 1d, 2d and 2d, 2d are joined to each other and formed side by side, so that a lower metal mold K is formed. In this metal mold K, the groove parts 1e, 2e of adjacent divided pieces 1, 2 become in such a condition as to face each other, so as to form punch fitting holes.</p> |
