| 摘要 |
<p>PURPOSE:To obtain a dent for air jet, efficiently stabilizing flying of weft by cutting a thin plate into a shape with a dented place, processing the whole peripheral edges round and further processing the dented place with abrasive grain. CONSTITUTION:A thin plate made of stainless steel, etc., is cut into a shape with a dented place 3 to guide weft inserting air flow to cloth fallen side and then the whole peripheral edges are processed round by barrel processing, etc. Further, at least an upper guard edge 6 among the upper guard edge 6, a bottom edge 7 and a lower guard edge 8 of part to demarcate the dented place 3 is processed with abrasive grain by using a grinding tool 11 provided with a flexible base and a slant edge face 6a is formed to give the objective dent.</p> |
