请翻译以下专业文献的引言选段: Although the traditional dedicated fixturing approach is most economical for mass production, it would cause long lead time and high fixturing cost in small-to-medium sized batch production. Modular fixtures, which consist of a set of standard fixture components, have been a solution to small batch production since the 1960s. Although modular fixtures can provide flexibility in accommodating parts of different sizes and shapes, they are still not suitable for flexible manufacturing systems (FMS) owing to the fact that they must be reconfigured and assembled manually, and cannot be set-up automatically by any software means。