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用于薄而大的工件夹紧的真空夹头,通常是用真空泵抽出夹头和工件问的空气。这里介绍一种使用细腰管真空夹头的例子。在圆形真空夹头b上,按微小间隔做成若干个扇形凹槽c,在各凹槽中开有小孔d,在小孔头部接有管予f,每根管子上装有压力测量仪e,然后再接到细腰管g的中部。当流动在细腰管g内的空气流速逐渐增大时,随着气压的下降,抽出凹槽中的空气,从而达到工件a被夹紧。
Vacuum clamps for thin and large workpiece clamps usually draw air from the chuck and the workpiece using a vacuum pump. Here is an example of using a slim tube vacuum chuck. In the circular vacuum chuck b, made of a small number of fan-shaped grooves at intervals c, each hole in the opening d, the tube in the hole head to f, each tube is equipped with pressure Gauge e, and then connected to the middle of the slender tube g. As the flow rate of air flowing through the slender tube g gradually increases, the air in the groove is drawn out as the air pressure decreases, so that the workpiece a is clamped.