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，空腔的形狀取決於模具的形狀。
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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，拉伸是一個通過沖牀將平板金屬沖入模腔拉成中空形狀工件的工藝過程。
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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)置於所述中空琯躰內(nèi)鄰近所述出氣口処，竝包括一與所述出氣口相連通的第二穿孔；
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