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目前,机床主轴孔和车床尾座孔几乎均为锥孔,这就决定了刀具与机床的连接方式必定是锥柄连接,只是锥度不同而已。常用的锥度有:莫氏锥度,公制锥度(均为1:20),还有ISO标准的锥度7:24,也有3:20等等。由于几十年来,所采用的刀具都对机床功率要求不高,锥度连接已完全能满足刚性和可靠性的要求。随着新牌号刀具材料的出现及可转位硬质合金多刃刀具的推广应用,对机床驱动功率及刀具连接刚性有了更高的要求,因此机床与刀具的连接方式,必须有新的结构与之相适应。下面结合国内现有刀柄结构及功能特点,介绍新型的ABS连接—刀柄: 从国内机床厂生产的落地镗床和卧式镗床来看,以镗轴直径φ125～φ160mm为例,主轴孔都是公制8O,并有两个腰形孔A、B见图1,连接特点是:连
At present, the spindle hole and lathe tailstock holes are almost tapered bore, which determines the tool and the machine must be connected to the taper shank, but the taper is different. Commonly used taper: Morse taper, metric taper (both 1:20), there are ISO standard taper 7:24, there are 3:20 and so on. Due to the fact that the tool used has not required the machine power for decades, the taper connection has fully met the requirements of rigidity and reliability. With the advent of the new grade of cutting tool material and the promotion and application of indexable cemented carbide multi-blade cutting tools, higher requirements are put on the driving power of the machine tool and the rigidity of the tool connection. Therefore, the connection between the machine tool and the cutting tool must have a new structure Correspondingly. The following combination of the domestic structure and function of the existing knife handle, introduces a new type of ABS connection - Shank: Floor Boring Machine and horizontal boring machine produced by the domestic machine tool plant point of view, with a diameter of φ125 ~ φ160mm boring spindle, for example, the spindle hole is Metric 8O, and there are two waist-shaped hole A, B, see Figure 1, the connection is characterized by: even