在销联接中，为了便于从盲孔中拆出销子，设计时通常选用内螺纹圆柱销或圆锥销。可是，在实际装配或检修时又常买不到这类标准件。故此，人们只好用普通的圆柱销、圆锥销或自制的销子来代替。这样做在当时很方便，但却给日后的拆卸留下了麻烦。为了解决这个问题，我们对较细的 In the pin connection, in order to facilitate the removal of the blind hole from the pin, the design usually use female threaded pin or cone pin. However, in the actual assembly or maintenance often can not buy such standard parts. Therefore, people have to use ordinary pins, conical pins or self-made pins instead. This was convenient at the time, but left no room for future disassembly. In order to solve this problem, we are finer