5 Things You Need to Know about machining aerospace connectors on a CNC multi-spindle

More manufacturers are considering moving aerospace connector production to a CNC multi-spindle. If you’re in that group, here are five key points to keep in mind.

1. Why manufacturers adopt CNC multi-spindles

With the ability to cut cycle times 65% to 75%, we find three leading reasons an aerospace manufacturer will consider a CNC multi-spindle.

• Free up single-spindle machines for other types of parts, such as landing gear components.
• Allow higher levels of output from the same amount of floorspace.
• Counter the skilled labor shortage by increasing output per operator.

2. Evaluating if a CNC multi-spindle is right for you

To determine if a CNC multi-spindle makes sense for your parts, consider three quick criteria:

• Can your parts be machined from bar stock that is 52mm or smaller in diameter? If your parts are larger, you likely require a more traditional machine.
• How balanced is your part complexity? Multi-spindles are most effective when 60% to 80% of the features are on one side of the part.
• How homogeneous is your part mix? Aerospace shops that get the most from a multi-spindle typically produce either large lot sizes of single part numbers, or medium lot sizes of families of parts that share many common features.

Due to the level of complexity of typical aerospace connectors, most manufacturers will want to select a machine model with the following features:

• Eight spindles to handle the required number of processes, though a 6-spindle machine may be optimal for simpler parts.
• Two synchronous spindles for backworking.
• Two tool slides per spindle for maximum flexibility.
• Enough tool slides with a Y-axis to handle the parts’ complexity.

4. Integrating a CNC multi-spindle

When moving connectors to a CNC multi-spindle, keep in mind these common process-related considerations.

• Robust training. While an experienced CNC operator can learn to operate a multi-spindle, it’s a different level of technology that requires training support.
• Aerospace expertise. The aerospace industry presents unique challenges, so select a machine tool builder who understands your business.
• A strong track record of integration. Incorporating a multi-spindle requires rethinking aspects of your operations, so choose a company with a proven record of successfully helping manufacturers integrate the technology.

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