| 摘要 |
PURPOSE:To improve the blanking accuracy by forming the profile which coincides with the weld zone shape of a blanking blade on the supporting face of a supporting block, then by performing TIG welding by abutting the weld zone of the blanking blade with its close-fitting on the supporting face. CONSTITUTION:A supporting block 14 is fixed via a bolt 18 to the back bar 16 which is installed at the lower part of the main body of a welding machine and the copper made position regulating block 20 is fixed by a bolt 22 to a horizontal supporting part 14b. In this case,the profile which coincides with the shape of the vicinity of the both end parts 10b, 10b to be welded of the blanking blade 10 is formed on the upper face of the supporting part 14b and a linear recessed groove 24 is worked as well. TIG welding is performed with passing an inert gas by clamping the blade 10, by holding the both end parts 10b, 10b of the blade 10 with their close-fitting onto this supporting part 14. The strength deterioration of the blade tip part can be prevented in this way, so the blanking accuracy by the blanking blade can be increased.
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