What are the advantages of metal spinning over stamping and deep drawing?

CNC technology has allowed metal spinning to become highly competitive with stamping and deep drawing processes. Advantages include: flexible production, rapid tooling at low costs, tooling modifications, short set-up times and better material yields due to the cold-work hardening of materials.

What shapes can metal spinning produce?

The most common shapes are dished, conical, hemispherical and elliptical. However, compound shapes can also be achieved. Edge configurations that include beads and hems are also easily accomplished with metal spinning. The diagram below represents common spinning shapes.

What is the smallest and largest part you can make?

The chart below outlines our capabilities with regard to common materials and our minimum-maximum capacity.

What are the typical tolerances that can be achieved with metal spinning?

Typical tolerances for manual metal spinning are +/- 1/16”, although with proper gauges tighter tolerances can be achieved on some dimensions. Typical tolerances for CNC spinning are +/- 1/32” or less depending upon the part and the particular dimension in question.

What happens to the tooling once the job is completed?

As a customer of Ace Metal Spinning, generally, you'll own the spin tool once the job has been completed. It is customary, however, that we store the tooling at our plant. Not only does this increase turn-around time when a follow-up order is placed, but it also guarantees that your tooling will be available and in good condition for years to come.

What if a design change requires a change in diameter?

If the changes cause the inside diameter to decrease in size, the change will be relatively inexpensive. If the inside diameter increases, new tooling will have to be produced.

I’ve determined that spinning could work for my part. Are there any design tips I should keep in mind?

• Where possible, allow a center pilot hole to reduce cost.
• Use beads, grooves or flanges to add strength and rigidity.
• Large corner radii will add strength and is more cost effective.
• Design changes reducing the inside diameter are relatively inexpensive, increasing the inside diameter requires new tooling.
• The smaller the tolerance, the more expensive the part.
• Flexibility in part design results in increased savings.
• Use I.D. dimensions on drawings where possible, as the spin tool is made from I.D. dimensions

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