一、概述现代机床夹具(如成组夹具、通用可调夹具、拼拆式夹具)的结构共性,大都由通用基体(夹具体和传动装置等)和可调、可换(定位、夹紧等)元件两部分组成。其通用基体部分是零件组中所有零件共用的主要部分;而可调、可换部分则是针对零件组中某种(或几种)特定零件(可以是假想零件)而专门设计的专用或准专用部分。这些夹具在整个零件组中具有相近于通用夹具的适应性,而当针对某个零件、某道工序调整好之后, First, an overview of modern machine fixtures (such as group fixture, universal adjustable fixture, split fixture) structural commonality, mostly by the common matrix (fixture body and transmission, etc.) and adjustable, changeable (positioning, clamping, etc. ) Components of two parts. The common base part is the main part shared by all the parts in the part group. The adjustable and replaceable part is a dedicated or accurate part specially designed for one (or several) specific parts (which may be imaginary parts) in the part group Dedicated part. These fixtures in the entire part group has similar to the common fixture adaptability, and when a part, a certain process adjusted,