钢琴弦槌是击弦的主要部件,槌柄是组合件,要求两端有直纹,纹角60°,纹深0.6mm,起胶粘牢固作用(图一)。图1弦褪结构图我厂原加工弦褪柄直纹是手拿锉刀、压在弦褪柄上往返滚动,压出的花纹深浅不均,不但质量达不到技术要求,而且生产效率低.1986年研制成弦祖柄滚扣机(图二),用于生产,提高工 Piano hammer is the main part of the string, hammer shank is the assembly, requires straight ends at both ends, angle 60 °, pattern depth 0.6mm, play a solid role of glue (Figure 1). Figure 1 string fade structure diagram Our factory processing chord faded handle ruled line is holding the file, the pressure in the chord stem handle back and forth rolling, the pressure of the uneven depth of the pattern, not only failed to meet the technical requirements of quality, and low production efficiency. 1986 developed into ancestral handle hook buckle machine (Figure 2), for the production and improve workers