四、弦轴的制作二胡有两个弦轴,上轴拴内弦,下轴拴外弦。通过轴和轴孔的摩擦力来维持琴弦张力的弦轴较多见,但也有用蜗轮蜗杆装置张紧琴弦的。本文仅介绍利用木料间摩擦力张弦的弦轴的制作方法。弦轴如图6—1所示。 (一)选材常用的弦轴材料有红木、花梨木、黄杨 Fourth, the production of string axis There are two strings of the erhu, on the shaft tied to the string, the lower shaft tied to the outer string. It is more common to see a string that maintains the tension of the string through the friction between the shaft and the shaft bore, but it is also useful for tightening a string with a worm gear. This article describes only the use of wood friction between the string chord string production method. The chord axis is shown in Figure 6-1. (A) material selection string axis materials are mahogany, rosewood, boxwood