销连接在机械结构中应用极广，其主要作用是固定连接件的相对位置即起定位作用。在模具生产中，常见有用销连接的零件有两种类型：一是被连接的零件者未经淬火处理；二是被连接的零件只有一件是淬火件。最近我厂在模具生产中遇到销连接的一组零件都是淬火件，如图所示。图中设 Pin connection is widely used in the mechanical structure, its main role is to fix the relative position of the connector that plays the role of positioning. In the mold production, there are two common types of parts that are useful for pin connection: one is the parts that are connected are not quenched; the other is that only one of the connected parts is a quenched part. Recently I encountered in the production plant in the mold pin connected to a group of parts are quenched pieces, as shown. Figure set