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在车床、磨床以及其它机床上加工直径d=1～80mm、长为几米的捧形工件时,一般都将其自由端套在支架的导管内实现支承。由于工件自由端在套管中的间隙较大,工件转速又高,所以长棒形工件的自由端要产生振动,而振动的强弱程度与其径向间隙有关。振动产生噪声,损伤导管和工件,降低加工精度和生产率。苏联研制了一种在导管与棒体之间输入普通冷却润滑液,消除长棒形工件在支承导管中振动的新方法,并在精密无心磨床上进行了生产试验。试验时,导管放置在切削区的两侧,导管与棒体之间的间隙为1～2mm,没有两个输送器,一个输送器把穿过导管的长棒送入切削区,再穿过另一个支架导管进入到另一个输送器,如图所示,长棒形工件在导管中留有
In the lathe, grinder and other machine tool diameter d = 1 ~ 80mm, length of a few meters when the holding workpieces, the general will be free-end sleeve in the stent catheter support. As the free end of the workpiece in the casing of the larger gap, the workpiece speed and high, so the long rod-shaped workpiece free end to produce vibration, and the degree of vibration and its radial clearance. Vibration produces noise, damaging conduits and workpieces, reducing machining accuracy and productivity. The Soviet Union developed a new method of introducing common cooling fluid between the guide tube and the rod to eliminate the vibration of long rod-shaped workpieces in the support tube. The production test was carried out on a precision centerless grinder. During the test, the catheters were placed on both sides of the cutting zone with a gap of 1 to 2 mm between the catheter and the body. There were no two conveyors. One conveyer fed the long rod through the catheter into the cutting zone, One stent catheter enters the other, as shown, with a long rod-shaped workpiece left in the catheter