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为了不夹毛或夹坏非金属轴类零件,我们专门研究设计了一个简单实用的开口胎具(见附图)。使用时,用三爪卡盘的卡爪夹持开口胎具外圆φD,卡爪端面与A面贴紧后即可进行车削。为了使开口胎具具有一定的弹性,必须在轴向开一个通槽。胎具壁厚根据零件的直径大小,一般可取2～3mm,内孔尺寸φd一般比零件直径大0.1mm。槽宽Z一般与壁厚尺寸相同。φD、L及l可根据实际需要而定。这种装夹方法,经多年使用,实践证明简单、实用且效果较理想。
In order not to clip hair or clip non-metallic parts of the shaft, we have designed a simple and practical open carcass (see photo). When in use, the jaws of a three-jaw chuck grip the outer circumference of the opening tool φD, and the jaws face can be lathed tightly with the A surface. In order to make the opening of a certain degree of flexibility of the tire, you must open a slot in the axial direction. Belt wall thickness according to the size of the parts, generally desirable 2 ~ 3mm, bore size φd generally larger than the part diameter 0.1mm. The width Z is generally the same as the wall thickness. φD, L and l can be based on actual needs. This clamping method, after years of use, proved to be simple, practical and the effect is better.