Internal support type mandrel clamp

Our factory processes a number of flanges at both ends of the cast iron pipe (as shown in Figure 1). According to the usual processing steps, a center frame is required, so that it has to be double-mounted, which is time-consuming and labor-intensive, and cannot guarantee accuracy. Claim. To this end, we have designed an internal support type mandrel fixture as shown in Figure 2. It works well. The fixture consists of a 2〃 welded pipe, an expansion sleeve and a shaft head. The three-jaw chuck 1 does not clamp the shaft head when clamping