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Advanced 5-Axis CNC Machining Improves Mold Accuracy by 40%

2026-05-28 | By Engineering Team | 5 min read

In a significant leap forward for precision mold manufacturing, PRECISION MOLD & DIE has invested $2.8 million in state-of-the-art 5-axis CNC machining centers, resulting in a 40% improvement in mold accuracy and a 25% reduction in overall lead times.

The Technology Investment

In Q1 2026, we commissioned four new DMG Mori DMU 65 monoBLOCK 5-axis CNC machining centers. These machines represent the gold standard in precision mold machining, capable of simultaneous 5-axis interpolation with positioning accuracy of ±0.002mm.

Unlike traditional 3-axis machining that requires multiple setups and fixture changes, 5-axis machining allows us to machine complex mold geometries in a single setup. This eliminates cumulative positioning errors and dramatically improves the accuracy of intricate features such as deep ribs, undercuts, and complex cooling channels.

Measurable Results

Since the commissioning of these new machines, our quality data shows:

  • 40% improvement in dimensional accuracy — average dimensional deviation reduced from ±0.012mm to ±0.005mm
  • 25% reduction in lead time — average mold delivery shortened from 45 to 34 days
  • 60% reduction in EDM time — 5-axis pre-finishing reduces required EDM burning time
  • Improved surface finish — achieving SPI A-2 finish directly from machining in many cases
  • Zero setup errors — single-setup machining eliminates fixture alignment errors

Customer Impact

For our customers, this translates into tangible benefits: faster time-to-market for new products, higher quality molded parts with tighter tolerances, and longer mold life due to superior machining precision. One automotive customer reported that parts from molds produced on our 5-axis centers achieved CpK values above 1.67 on all critical dimensions — exceeding their 1.33 minimum requirement.

Looking Ahead

This investment is part of our ongoing commitment to manufacturing excellence. We plan to add two more 5-axis machines by Q4 2026, along with automated pallet changers for lights-out machining capability, further reducing lead times and costs for our global customers.

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