For OEMs and manufacturers, the machining process behind a part can affect cost, consistency, lead time, and long-term production reliability.
CNC machining, Swiss CNC machining, screw machining, and multi-spindle production can all support high-volume turned parts. The best choice depends on the print, material, tolerances, required features, annual usage, and repeat order needs.
Avanti Engineering focuses on high-volume precision machined parts, typically with production quantities of 1,000 pieces or more. With multiple machining capabilities under one roof, Avanti can help determine which process is the most practical fit for your part.
Quick Answer: CNC Machining or Screw Machining?
CNC machining is often the better choice for high-volume parts that require complex geometry, tight feature control, milled details, drilled features, or programming flexibility.
Swiss CNC machining is commonly used for smaller, precise turned parts with detailed features, slender profiles, or multiple operations from bar stock.
Screw machining is often better for stable, repeat turned parts where cycle time, production volume, and per-part cost are major factors.
Multi-spindle screw machining can be a strong fit when quantities are high and several operations can be completed efficiently in the same machine cycle.
Why Process Selection Matters
A part can often be made more than one way. The important question is which process can produce it accurately, consistently, and efficiently at volume.
The wrong process can lead to:
- Higher part cost
- Longer cycle times
- Unnecessary setup complexity
- Repeatability issues
- Delivery delays
- Quality problems as volume increases
For repeat OEM parts, process selection should be reviewed before production begins. A part with complex features may belong on CNC equipment. A stable turned part with higher annual usage may be better suited for screw machining or multi-spindle production.
When CNC Machining Is the Better Choice
CNC machining is a strong option when a high-volume part requires flexibility, tighter control, or more complex features.
CNC machining may be the right fit when:
- The part has complex geometry
- Critical tolerances must be held consistently
- The part requires drilling, milling, cross holes, flats, or other detailed features
- The design requires programming flexibility
- The material or geometry makes automatic screw machining less practical
- The part needs repeatable production but does not fit a traditional screw machine process
CNC machining is not only for short runs. For the right part, it can be the best production method even at higher quantities.
When Swiss CNC Machining Makes Sense
Swiss CNC machining is commonly used for smaller, precise, and more detailed turned parts. It can be especially useful when the part is long, slender, or requires several features to be machined efficiently from bar stock.
Swiss CNC machining may be the right choice for:
- Small turned components
- Slender parts
- Detailed features
- Threads, grooves, or drilled details
- Parts requiring multiple operations
- Components that need strong repeatability at volume
For the right component, Swiss CNC machining can provide a strong balance of precision, control, and production efficiency.
When Screw Machining Is the Better Choice
Screw machining is built for repeat production of turned parts from bar stock. It is often the more practical choice when the part design is stable and the quantity supports an efficient setup.
Screw machining may be the better option when:
- The part is ordered repeatedly
- The print is stable
- The geometry fits automatic turning
- Cycle time affects total cost
- Long-running production is expected
- Per-part cost matters at volume
Screw machining is not outdated. For many turned metal components, it remains one of the most efficient production methods available.
When Multi-Spindle Machining Makes Sense
Multi-spindle machining is often used when production volume is higher and multiple operations can be completed in the same machine cycle.
Multi-spindle machining may be a strong fit when:
- Annual usage is high
- The part has repeatable turned features
- Bar-fed production makes sense
- Cycle time is a major cost factor
- The job requires consistent output over time
A print review can help determine whether a part should run on CNC equipment, Swiss CNC, screw machining, or multi-spindle production.
Can a Part Move from CNC to Screw Machining?
Yes, but only when the part fits the process.
Some high-volume parts stay on CNC equipment because the geometry, tolerances, or required features make CNC the better method. Others may be better suited for screw machining or multi-spindle production once the print is stable and the volume supports the setup.
A process change may make sense when:
- The part is ordered repeatedly
- Annual volume has increased
- The print is stable
- Cycle time is driving cost
- The geometry fits screw machine production
The key question is simple: Can the part be produced more efficiently without sacrificing quality?
What to Send for an Accurate Quote
To help Avanti recommend the right process, provide:
- Part print or CAD file
- Material specification
- Required tolerances
- Estimated annual usage
- Release quantity
- Repeat order schedule
- Inspection requirements
- Finishing, plating, or packaging needs
- Any current production issues
If the part is already being made elsewhere, include what is not working. Cost concerns, burrs, finish issues, late deliveries, rejected parts, or inconsistent dimensions can all affect the recommended process.
Request a Process Review for Your High-Volume Part
Avanti Engineering manufactures custom high-volume precision machined parts using CNC, Swiss CNC, screw machine, and multi-spindle capabilities.
If you are quoting a production part with quantities of 1,000 pieces or more, Avanti can review your print, material, tolerances, geometry, and volume requirements to determine the most practical production method.
Send Avanti Engineering your part print or production details to request a process review. The team will help determine whether CNC machining, Swiss CNC machining, screw machining, or multi-spindle production is the right fit for your high-volume part.
FAQ
Is CNC machining better than screw machining?
Not always. CNC machining is often better for complex parts, tighter feature control, and features that require programming flexibility. Screw machining may be better for stable turned parts produced in larger quantities.
Is screw machining still used today?
Yes. Screw machining is still widely used for repeat-production metal components because it can be efficient, consistent, and cost-effective when the part fits the process.
When is Swiss CNC machining the best choice?
Swiss CNC machining is often a strong option for small, slender, detailed, or precise turned parts that require multiple features from bar stock.
What quantity does Avanti typically work with?
Avanti focuses on high-volume production, typically with minimum quantities of 1,000 parts or more.
Can Avanti help choose the right process?
Yes. Avanti can review the print, material, tolerances, volume, and production requirements to determine whether CNC machining, Swiss CNC machining, screw machining, or multi-spindle production is the best fit.
Ready to Review a High-Volume Part?
If your part requires 1,000 pieces or more, Avanti Engineering can review your print, material, tolerances, and production requirements. Contact Avanti Engineering to start the quoting process.