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在车削较长圆锥孔时,用转动小滑板法车削,将受到小滑板行程的限制,若采用靠模法车削,靠模装置的设计、安装比较麻烦。所以单件或小批量加工时采用钢丝展开法车削既简便又准确。 1.钢丝展开法车削的工作原理 如图1所示,在中滑板丝杠上装一圆柱筒4,将钢丝绳5的两端分别固定在床身上,中间绕在圆柱筒4上。当床鞍做纵向自动进给时,在钢丝绳5的拉力作用下,圆柱筒4将带动中滑板及车刀横向进给,将工件车成圆锥孔。
When turning a long taper hole, turning with a small sliding plate method will be limited by the small sliding plate stroke. If adopting the method of turning by means of a die, the design of the die assembly is troublesome to install. Therefore, single-piece or small batch processing using wire expanding method is simple and accurate turning. 1 wire unrolling method of turning the working principle shown in Figure 1, the skateboard screw mounted on a cylinder 4, the two ends of the wire rope 5 are fixed to the bed, the middle around the cylinder 4. When the saddle to do vertical automatic feed, the tensile force of the wire rope 5, the cylinder 4 will drive the skateboard and lathe transverse feed, the workpiece into a cone hole.