PRZOOM - /newswire/ -
Jackson, MI, United States, 2008/10/31 - Orbital forming offers advantages over other methods of fastening, yet there are occasions where it may not be the optimal solution.
It is for these delicate and lighter duty applications that the Orbitform Group has engineered a Spiralform cartridge into its standard product line.
Spiralform displaces material using an eleven-sided spiral pattern similar to those created by the old Spirograph drawing toy. As the forming tool contacts the surface, material uniformly flows out from the center, providing superior strength and surfacing.
A versatile process, Spiralform can be used on:
Ferrous and non-ferrous metals;
Die cast materials;
Ceramics, glass, and other delicate materials and assemblies.
Spiralform is well suited for many unique applications and is available for:
New machines and systems;
Retrofit on Orbitform machines (an industry exclusive - making all current and future orbital forming machines essentially dual-purpose and extremely versatile).
Additionally, Spiralform is designed to accommodate an integral load cell into its spindle package, providing the same Watchdawg Process Intelligence capabilities as the rest of the Orbitform product line.
Spiral Forming Strengths
Well suited for rivets 1/8" and smaller (process was originally developed for watch making applications).
Easily fills "D" type tabs and other irregular sections since material is displaced spirally outward.
Since peen is driven no scuffing/galling occurs - very well suited for embossing applications.
Spiral Forming Limitations:
Does not hold up well in high force/continuous duty applications such as automotive plants.
Cycle time slower than orbital.
More complex method used to generate peen motion.
Wear items (thrust cup/peen holder) available only from factory.
Can not be used for multispindle applications.
More difficult to accommodate reach/interference applications.
Thrust cup/peen holder interface open to environment - grease can leak out, foreign matter can enter, especially in inverted mounted applications. Some type of shielding required for this type of mounting.
Limited in adapting pressure pads to unit due to location of spring required to preload peen holder to pressure cup.
Large diameter peens have a tendency to hammer in applications such as tube flaring due to the type of peen motion.
The Orbitform Group includes Orbitform, Milford, Adtech, Marathon Weld, Arbor Automation, Rollerform, and Watchdawg Process Intelligence.