论文部分内容阅读
我厂精加工未淬火缝纫机零件圆孔时,采用螺旋齿拉刀代替铰刀,改变了铰孔光洁度差、有喇叭孔、孔径尺寸扩大等现象。现只经一次拉削成型,尺寸精度稳定,表面光洁度达▽_7～▽_9。该刀具加工效率高,比用铰刀生产效率提高4～5倍,适于批量大、精度要求高、工件材料为优质碳素结构钢及灰铸铁,孔长10～50毫米、孔径>φ6～φ16毫米小孔径加工。
I plant finishing quenching machine parts circular hole, the use of helical broaches instead of reamers, reaming poor change finish, a speaker hole, the aperture size to expand and so on. Now only a pull forming, dimensional accuracy and stability, surface finish ▽ _7 ~ ▽ _9. The cutting tool has the advantages of high processing efficiency, 4 to 5 times higher efficiency than the reamer, and is suitable for large batch and high precision requirements. The workpiece material is high-quality carbon structural steel and gray cast iron, the hole length is 10 to 50 millimeters, φ16 mm small aperture processing.