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。
www.jxcad.com.cn
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)沖牀將平板金屬?zèng)_入模腔拉成中空形狀工件的工藝過(guò)程。
www.jxcad.com.cn
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；
ip.com