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我厂生产的轴承设备中有一种关键件,其外形和精度要求见图1。由于该件精度要求高,用常规芯轴始终难以达到图纸规定的精度要求。为此,我设计了一种尼龙锥度胀力芯轴见图2,经过批量加工生产证明,效果良好。精磨后,零件外圆的圆度始终控制在0.001～0.002mm之间,而且质量稳定,零件的合格品率由原来的30％～60％提高到96％～100％,工效也提高了三倍多。该芯轴的主要特点是:胀力较大,制作简单,操作方便,且加工出的零件精度较高。
I plant a bearing the production of key equipment, the appearance and accuracy requirements shown in Figure 1. Due to the high precision of the piece, it is always difficult to meet the accuracy requirements of the drawings with the conventional mandrel. To this end, I designed a taper taper expansion force mandrel shown in Figure 2, after batch processing proves that the effect is good. After grinding, the roundness of the outer circumference of the parts is always controlled between 0.001 ~ 0.002mm, and the quality is stable. The qualified rate of the parts is increased from 30% ~ 60% to 96% ~ 100%, and the work efficiency is also improved by three More times. The main features of the mandrel are: larger expansion force, simple production, easy operation, and high precision machined parts.