我厂生产各种柴油打桩机中的导杆,直徑自φ80～4110毫米、壁厚12～16毫米、长度2900～3900毫米、外圆光洁度要求▽▽▽_8。在沒有相应設备的条件下,我們采用了三珠式彈性滚压工具(如图1),效果良好。 滾压具装在刀架上。件1为φ13鋼珠,衬托在两只滾动軸承8內,鋼珠用固定在滾压头4上的黄銅珠架3定位,滾压头由彈簧5借手柄6調节压力。滾压前松开支头螺釘7,縮进滾压头,再将工件套入,調节好彈簧压力后即可滾压,工具渡压到头时支紧螺釘7。具体規范:工件綫速度v=130米/分,走刀量0.18～0.22毫米╱转,滾压余量0.005～0.012毫米,以往复滾压一次为最佳,冷却潤滑剂用40％的20号机油和60％的2号錠子油較合适。三珠式外圆彈性滚压工具的优点是結构簡单、制造容易、使用方便,能在普通車床上进行长零件的外圓 I plant a variety of diesel pile driver in the guide rod, the diameter from φ80 ~ 4110 mm, wall thickness 12 to 16 mm, length 2900 ~ 3900 mm, external finish requirements ▽ ▽ ▽ _8. In the absence of appropriate equipment, we use a three-bead elastic rolling tool (Figure 1), the effect is good. Roll with a knife holder. Pieces 1 for φ13 ball, set off in the two rolling bearings 8, the ball is fixed on the rolling head 4 brass peg 3 positioning, rolling head by the spring 5 by the handle 6 to adjust the pressure. Before rolling, loosen the head screw 7, retract the head, then insert the workpiece, adjust the pressure after the spring can be rolled, the tool cross the end of the screw to tighten the screws 7. Specific norms: the workpiece line speed v = 130 m / min, take the amount of 0.18 ~ 0.22 mm ╱ transfer, rolling allowance 0.005 ~ 0.012 mm, to reciprocating rolling once for the best, with 40% cooling lubricant on the 20th Oil and 60% of the 2 spindle oil is more appropriate. Three beads of the advantages of elastic rolling tool is simple structure, easy manufacture, easy to use, can be carried out in the ordinary lathe cylindrical long parts