Expander shrinker

The Expanding-Shrinking Process – when contoured transitional Areas are required The expanding-shrinking process is an unique and economical means of forming a wide range of parts. For some applications, the principles of both expanding and shrinking are combined in a single machine. The center of such machine is an Expander. In principle, there are two methods to combine the processes: With an expander as the center of the machine and with a collapsible outer die, the outer die will have a predefined diameter and act as a compression tool. The part is then expanded into the outer die. With an expander as the center of the machine and a full shrinker around the expander, both the expander and shrinker can move to any given diameter. This process is used for applications requiring the formation of localized embossments, beads, offsets, or other contoured transitional areas along the surface of the product. Very complex curves or corrugations with high accuracy can be made. The process combines both motions so that the workpiece can be initially expanded and then shrunk. The cycle sequence can be reversed to provide shrinking first and then expanding. This process can replace many other expensive forming processes. Advantages of our Expander-Shrinker-Combination Complex profiles and shapes with high accuracy Exotic materials can be formed and shaped without any machining Optimize volume distribution and stress relief of the product Measuring and calibrating of the inner or outer ring diameter during the automatic cycle (gauge mode) A unique control system with a user-friendly interface that guarantees repeatability and accuracy