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机用平口钳在夹紧长方形或圆柱形工件时,常常向上拱起。因此,在夹紧过程中,须反复敲打,这样,既增加了辅助时间,加工质量又不易保证。对此,我们对机用平口钳作了如图所示的改进。将钳口铁1及其支承面设计成燕尾形斜面,斜角α取值可在20°～25°之间。左右钳口铁1用内六角螺钉2活栓在本体上,可以上下滑动,并由下端的托簧3托起。夹紧工件时,钳口铁1有向下滑动的趋势,使工件紧贴在垫铁5和虎钳底座上,避免了向
Machine clamps in the clamping rectangular or cylindrical workpiece, often arching up. Therefore, in the clamping process, be repeated beating, so that not only increases the auxiliary time, processing quality is not easy to guarantee. In this regard, we made the machine as shown in the flat pliers improved. The nip iron 1 and its supporting surface is designed as a dovetail bevel, bevel angle α may be between 20 ° ~ 25 °. Left and right nip 1 with hexagonal screw 2 live bolt on the body, you can slide up and down, and by the bottom of the spring 3 care. Clamping the workpiece, the jaw iron 1 has a downward sliding trend, so that the workpiece close to the horn 5 and the vise base, to avoid the direction