GRIPPING TOOL HAVING DIAMOND ABRASIVE GRAINS FIXED THEREON, AND PIPE BENDER HAVING THE FORMER

PROBLEM TO BE SOLVED: To elongate the lifetime of a pipe bender gripping tool of the prior art, because the abrasion resistance is not sufficient to abrade on a gripped face.SOLUTION: The gripping face of a pipe gripping tool of a pipe bender is electrically deposited with diamond and/or cBN abrasiv...

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Bibliographische Detailangaben
Hauptverfasser:	IMOTO YUKIO, TSUCHIYA KAZUHIKO, SAITO MINORU, ASANO KATSUNORI, CHIBA MASAHIKO, BANSHO HIDEYUKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	HAND TOOLS MANIPULATORS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS PUNCHING METAL TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To elongate the lifetime of a pipe bender gripping tool of the prior art, because the abrasion resistance is not sufficient to abrade on a gripped face.SOLUTION: The gripping face of a pipe gripping tool of a pipe bender is electrically deposited with diamond and/or cBN abrasive grains having a granularity equal to or higher than 500 meshes and equal to or lower than 30 meshes and a Young's modulus exceeding 760 GPa by a nickel plating. As a result, the wear of the gripping face can be drastically reduced, and the pipe is not worn so that the lifetime of the gripping tool can be remarkably elongated.SELECTED DRAWING: Figure 3 【課題】従来のパイプベンダーの掴み用工具は、耐摩耗性が十分でなかったため、掴む面が摩耗することにより、短寿命であった。【解決手段】パイプベンダーのパイプの掴み用工具の掴む面に、粒度が５００メッシュ以上３０メッシュ以下であり、ヤング率が７６０ＧＰａを越える、ダイヤモンド及び／またはｃＢＮ砥粒を、ニッケルめっきにより電着する。これにより、掴む面の損耗を著しく少なくし、またパイプには傷を付けることもなく、掴み用工具の著しい長寿命化ができる。【選択図】図３