PEELING FORCE MEASURING DEVICE AND PEELING FORCE MEASURING METHOD

To provide a technology that, even in a case where an amount that an object, resulting from baking in a metal mold, adheres to a cavity surface is small, enables accurate, easy measurement of force required to peel the adhering object from the cavity surface.SOLUTION: In a tension testing machine th...

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Bibliographische Detailangaben
Hauptverfasser: IWATA YASUSHI, TAKEUCHI HISATO, TACHIKAWA HIDEO, HAGINO TATSUYA, KIN SEIKI, SUZUKI HODO, KAJINO MASAKI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a technology that, even in a case where an amount that an object, resulting from baking in a metal mold, adheres to a cavity surface is small, enables accurate, easy measurement of force required to peel the adhering object from the cavity surface.SOLUTION: In a tension testing machine that detects stress required to peel from a first object (e.g., a cavity surface of a metal mold), which is one object of a pair of objects disposed in contact with each other, a second object (e.g., baked metal), which is the other object, a stress relief jig is interposed between a separation mechanism for separating the first object and the second object and a holding device joint to the second object in a predetermined joining area. The stress relief jig is able to relax a change in stress acting on the second holding device and rotate in a rotating direction around the direction of the stress, serving as a center axis, and in an inclining direction around the center axis.SELECTED DRAWING: Figure 1 【課題】金型における焼き付きに起因する付着物のキャビティ面に対する付着量が小さい場合においても当該付着物のキャビティ面からの引き剥がし力を正確且つ簡便に測定することができる技術を提供する。【解決手段】互いに接触している一組の物体のうちの一方の物体である第1物体(例えば金型のキャビティ面)から他方の物体である第2物体(例えば焼き付いた金属)を引き剥がすのに必要とされる応力を検出する引張試験機において、第1物体と第2物体とを引き離す引き離し機構と所定の接着面積にて第2物体に接着された保持具との間に応力緩和治具を介装する。応力緩和治具は、第2保持具に作用する応力の変動を緩和し且つ上記応力の方向を中心軸とする回転方向及び当該中心軸に対して傾斜する方向に回動することができる。【選択図】図1