Alcパネルの主面内切り込み、開口穴及び開口切欠の形成方法

Notched opening hole in inner surface of alc panel and opening notch forming method

Abstract

【課題】 主面内切り込みを補強鉄筋の切断を伴いながらもALCパネルや工具をほとんど傷めることなく効率的に形成し、もって主面内に収まる開口穴又は小口面の中間部の開口切欠を効率的に形成する。 【解決手段】 直径Dが所定の範囲にある丸鋸刃41,42を用い、回転する丸鋸刃41を一主面2からパネル厚さの中央付近まで又はそれ以上に作用させる第一工程と、他主面3からパネル厚さの中央付近まで又はそれ以上に作用させる第二工程とにより、切り残し部9を残した主面内切り込み8を補強鉄筋5の切断を伴って形成する。主面内切り込み8を4本形成し、パネル部分11を衝撃で除去して開口穴10を形成する。また、主面内切り込み8を1本形成するとともに、別途2本の小口切り込みを形成し、パネル部分21を衝撃で除去して開口切欠20を形成する。 【選択図】 図1
<P>PROBLEM TO BE SOLVED: To efficiently form a notch in the main surface of an ALC panel without almost damaging the ALC panel or a tool and to efficiently forming the opening hole housed in the main surface of ALC panel or the opening notch of the intermediate part of the cut end of the ALC panel. <P>SOLUTION: The notch 8 in the main surface of the ALC panel leaving an uncut part 9 is formed accompanied by the cutting of the reinforcing bar 5 by a first process using circular saw blades 41 and 42 of which the diameters D are within a predetermined range to allow the rotary circular saw blade 41 to act on the region up to the central vicinity of the thickness of the panel from one main surface 2 of the ALC panel or more and a second process to allow the rotary circular saw blade 42 to act on the central vicinity of the thickness of the ALC panel or more from the other main surface 3. Four notches 8 in the main surface of the ALC panel are formed and the panel part 11 is removed by an impact to form the opening hole 10. Further, one notch 8 in the main surface is formed while two separate notches in the cut ends are formed and a panel part 21 is removed by an impact to form the opening notch 20. <P>COPYRIGHT: (C)2007,JPO&INPIT

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Cited By (2)

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    JP-2010274522-ADecember 09, 2010Toa Kogyo Kk, 東亜工業株式会社Cutting dust collecting device of porous plate
    JP-2012087558-AMay 10, 2012Sumitomo Kinzoku Kozan Siporex Kk, 住友金属鉱山シポレックス株式会社Metal and method for reinforcing notched alc panel