Manual Spin Forming & CNC Metal Spinning

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Custom Metal Spinning

At Toledo Metal Spinning Company, we use a variety of materials for metal spinning such as cold rolled steel, hot rolled steel, aluminum, stainless steel, brass, copper and exotic  metals such as titanium, inconel, and hastealloy. Toledo Metal Spinning Company specializes in the forming of stainless steel. With our automated metal spinning lathes and the capabilities of our deep drawing, stamping and welding equipment, our ability to form your part to your specifications and within your budget are realistic.  Toledo Metal Spinning Company has over 75 years in metal forming experience and has used the spinning technology for a variety of industries such as aerospace, automotive, military, ordnance, plastics, lighting, pharmaceuticals, dairy, etc… We have engineers on staff with metal spinning expertise to help guide you on designing a custom part and choose the optimal process to produce high quality spun parts at a competitive and affordable price.  Tooling is custom made to form parts to your configuration.

Spin Forming Services & Shapes

Types of Metal Spinning

  • Edge Setting
  • Expanding
  • External Flanging
  • Internal Flanging
  • Necking
  • Reducing
  • Swaging
  • The Spinning of Hollow Shapes

CNC Metal Spinning

Metal Spinning, or Spin Forming is the process of moving a spinning roller over a metal blank.  The metal spinning process starts with a sheet metal blank that rotates on a lathe. The metal disc is pressed against a tool (called a mandrel or a chuck) with a tailstock. The metal disc, tailstock and tool rotate in a circular motion and a roller manipulated with CNC controls presses against the metal to form the metal over the tool through a series of passes by the roller. The resulting part is a piece that duplicates the exterior portion of the tool it was formed on.

The basic shapes in metal spinning are cones, flanged covers, hemispheres, cylindrical shells, venturis and parabolic nose shapes. Metal Spinning is an ideal process when tooling costs are to be minimized and part volume is low enough the unit cost is not going to offset the savings from tooling.  In some instances, metal spinning is the preferred method due to complicated part geometry. TMS utilizes CNC technology to develop programs for your part which allows programs to repeat with precision, piece after piece.

 

Our Metal Spin Forming Capabilities

CNC Metal Spinning CapabilitiesEnglish UnitsMetric Units
Max Blank Size, Diameter49.0 in1,245 mm
Max Part Length / Height48.0 in1,220 mm
Max Blank Thickness, Steel0.31 in8 mm
Max Blank Thickness, Stainless Steel0.25 in6.3 mm
Max Roller Force19 ton169 kN

 

Cost and Engineering Benefits of Preformed Blanks

TMS has over a half century of producing preform blanks with our deep drawing, rolling, stamping & welding capabilities.  Since metals can only be worked so much before requiring a thermal treating of some kind or failing, metal spinning alone is sometimes not the optimal processing method.  Utilizing a combination of welded blanks with aerospace quality welds or seamlessly deep drawn preforms can reduce processing costs of spun only parts and dramatically improve the level of quality by minimizing the straining or thinning of the material.  Minimizing straining of material is especially important in materials that strain harden like stainless steel, nickel, and titanium alloys or materials in general that have low elongation.  Applications requiring good fatigue life or need to minimize risk from cracking normally benefit using a gently produced preform then spinning it to the final shape.  This two step process can avoid issues common with metals that are well worked or highly strained.

Another added benefit using preforms can be the elimination of weld joints and the need to manufacture multiple parts.  Round parts made in two pieces and welded together can sometimes be manufactured in one piece.  Using a deep draw preform and spinning a final shape, the once two piece weldment now is a seamless part.  This typically improves quality and the ability of the part to perform while normally reducing lead time, supply chain complexity, and or cost.  Call us today and we would be happy to see what options you have to do more.

 

Manual Spinning

Manual spinning, also referred to as hand spinning, is another form of spinning that TMS offers.  Manually spinning is much like CNC spinning except the roller used to form the part is manipulated manually.  Since the force a person can produce is much less than the 10,000 to 38,100 pounds of force our CNC equipment can produce, manual metal spinning focuses around lower strength materials and thinner part geometries.