hollow punch

基本解釋

In sheet metal, drawing is a process of forming flat sheet metal into hollow shapes by means of a punch that causes the metal to flow into the die cavity.
在鈑金加工中，拉深是一種可以用沖頭將平板加工成空腔的工藝，空腔的形狀取決于模具的形狀。
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In sheet metal, drawing is a process of forming flat sheet metal into hollow shapes by mean of a punch that causes the metal to flow into the die cavity .
在板金上，拉伸是一個(gè)通過(guò)沖床將平板金屬?zèng)_入模腔拉成中空形狀工件的工藝過(guò)程。
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The second positioning piece is arranged within the hollow tube in adjacency to the air vent, and includes a second punch hole communicated with the air vent.
一第二定位件，設(shè)置于所述中空管體內(nèi)鄰近所述出氣口處，并包括一與所述出氣口相連通的第二穿孔；
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