论文部分内容阅读
直径大于30mm的孔通常都采用带刀座的镗杆,利用螺距为0.7mm的螺钉作径向调整,调整螺钉转一圈,直径将变化1.4mm,即使以30°或45°增量进行调整,对精加工来说也很粗糙,不易控制精度。图中所示为改进后的镗杆,它把刀座的径向调整变为轴向调整,即刀座沿倾斜成3°的斜面向外移动,这样采用螺距为1mm的调整螺钉,转一整圈,刀片也只向外移动0.052mm或直径变化0.104mm,如调整螺钉转1/8圈(45°),直径将只变化0.013mm。这在精加工时
Pores larger than 30mm in diameter are usually boring bars with seats and are adjusted radially with screws with a pitch of 0.7mm. The adjustment screw rotates one turn and the diameter will change by 1.4mm, even if adjusted in 30 ° or 45 ° increments , For finishing is also very rough, not easy to control the accuracy. The figure shows an improved boring bar which changes the radial adjustment of the tool holder into an axial adjustment, ie the tool holder is moved outwards along a bevel inclined at 3 ° so that the adjusting screw with a pitch of 1 mm is used to turn one The whole circle, the blade only move outward 0.052mm or diameter 0.104mm, such as adjustment screw to turn 1/8 (45 °), the diameter will only change 0.013mm. This is finishing