1. Define Requirements First, Then Choose Equipment
Material: For aluminum/copper, choose standard configurations; forsteel/titanium alloys, heavy-duty structures (hard rail + high torque spindle)
are required.
Accuracy:±0.01mm standard accuracy can usemedium-speed machines; ±0.005mm and above requirehigh-speed machines and a temperature-controlled environment.
Size: Select the worktable based on the maximum workpiecedimensions, leaving room for clamping.
Batch Size:For small-batch, high-variety production, prioritizeflexible tool changing; for mass production, prioritize stability and
compatibility with automation.
2. Three Core Performance Aspects**
Spindle:
High-Speed Machine (12,000-24,000 RPM): Suitable for light, softmaterials like aluminum and copper.
Heavy-Duty Cutting Machine (6,000-10,000 RPM):Suitable for hardmaterials like steel and stainless steel.
Key Point: Prioritize reliable brands (e.g., German HSK, JapaneseNSK).
Guideways:
Hard Rail (Sliding Guideways): High rigidity, withstands heavy-dutycutting, but slower speed and more complex maintenance.
Linear Rail (Rolling Guideways): High speed, high precision,suitable for high-speed precision machining, but lower load capacity.
Compromise: Hard rail + linear rail hybrid structure (higher cost).
CNC System:
Imported Brands (Fanuc, Siemens): High stability, mature operatorinterface, but advanced functionalities may be restricted.
Domestic Brands: High cost-effectiveness, significant progress incomplex areas like 5-axis machining, strong adaptability.
3. Brand & Service: Value Localized Responsiveness
International Brands:Cutting-edge technology, suitable for high-endprecision machining, but high price and long lead times for spare parts.
Domestic Brands:Outstanding cost-effectiveness, fast after-salesresponse (typically within 48 hours), convenient spare parts supply.
4. Calculate Total Cost (Lifecycle Cost)
Hidden costs include: Energy consumption costs, maintenance costs,opportunity costs due to inefficiency.
Calculation Method: Allocate the equipment purchase price, 5-yearmaintenance costs, energy costs, and labor costs to the per-part processing
cost for a comprehensive comparison.
Conclusion: There is no "best," only the "mostsuitable."
Choosing a machining center is a "battle of requirementmatching." The core logic is: Clearly define your own machining needs → Focus intently on the three key components (spindle, guideways, CNCsystem) → Calculate the total lifecycle cost → Combine brand service capabilities with test cutting verification → Select the most suitable "mainstay equipment."