We are Xiamen Goldcattle, a national high-tech enterprise that has been deeply rooted in precision manufacturing in Xiamen for 26 years. We specialize in providing one-stop customized services for high-precision CNC machining, injection molds, stamping parts, and 3D printing. In 2025, we have undertaken a large number of “extreme precision” projects in medical devices, aerospace, optical instruments, automotive structural parts and other fields – with tolerances starting at ±0.005mm, surface Ra below 0.4, and materials specifically selected for high-difficulty titanium alloys, aerospace aluminum, PEEK engineering plastics, etc.
To be honest, every time we receive such projects, our technical team will first “break into a sweat”: this is not ordinary processing, it’s competing with human hair (hair diameter is about 0.07mm, and our tolerance can be stably controlled within 1/14 of a hair).
But the real skills “forced” out by global customers over 26 years have allowed us to master precision machining to perfection – now five-axis linkage stably produces ±0.005mm, and we have become the exclusive supplier for many European and American customers. Today, we are making all the core knowledge honed through years of actual combat public, helping you directly produce parts that make “customers kneel and shout amazing” in 2025.
1. What is Real CNC Precision Machining?
Ordinary CNC: Tolerance ±0.02～±0.05mm, Ra1.6, just enough.
Precision CNC: Tolerance ±0.005mm～±0.002mm, Ra0.4 or even Ra0.2, form and position tolerance within 0.005mm, any tiny deviation will cause the entire machine to fail.
Xiamen Goldcattle’s 2025 real capabilities:
- Regular five-axis mass production stably achieves ±0.005mm
- Medical/aerospace high-end projects can reach ±0.002mm (has passed 100% first article inspection by multiple international customers)
2. Core Hardware System for Precision Machining (Our 26-year history of 血泪 upgrades)
- Early days: Ordinary 3-4 axis machines, serious dimensional drift due to temperature differences
- 2016-2022: Comprehensive introduction of original Japanese Mazak and German DMG MORI five-axis linkage
- 2023-2025: Newly built 1000㎡ 23℃±0.3℃ constant temperature and humidity clean workshop + GF wire EDM + Hexagon coordinate measuring machine (detection accuracy 0.0008mm)
To steadily do precision machining in 2025, five hardware sets are essential (none can be missing):
- True five-axis linkage machine tools (full closed-loop with grating scale + thermal deformation compensation)
- Constant temperature and humidity clean workshop (we control 23℃±0.3℃, humidity 40-60%)
- On-line probe (Renishaw/Blum, automatic compensation every 5-10 pieces)
- Spindle oil cooling + thermal compensation system (temperature rise controlled within 2℃)
- Independent shock absorption foundation + full workshop purification system
Without a constant temperature workshop, even the best machine tools will have thermal expansion and contraction of over 0.01mm in summer – we suffered enough from this in the early years, and now our workshop temperature control is stricter than laboratories.
3. Tools & Auxiliary Materials: The “Lifeblood” of Precision Machining
Ordinary processing can use ordinary tools, but precision processing must use top imported tools:
Our full range of standard equipment:
- Japan NS, OSG, Kyocera, Daido, Mitsubishi latest generation coatings (AlTiSiN, DLC, nano blue)
- Titanium alloy processing dedicated MSC variable helix vibration suppression end mill + 100bar high-pressure internal cooling
- Minimum diameter of micro-diameter corner cleaning tool is φ0.1mm, tool tip arc accuracy ±0.001mm
These tools allow us to maintain extremely low wear and extremely high surface quality when processing high-hardness materials.
4. Programming + Process Parameters: The “Black Technology” That Determines Success or Failure (Our Core Confidentiality)
80% of precision machining depends on process, 20% on equipment.
Our latest verified parameters in 2025 (universal for titanium alloy/aerospace aluminum/PEEK, has been stably running in hundreds of batches):
Roughing (leaving 0.2-0.3mm):
- φ12 tool, ap 0.4mm, ae 8mm, speed 6000-8000rpm, feed rate 1000-1400mm/min (vibration suppression path)
Semi-finishing (leaving 0.05-0.08mm):
- φ8 ball nose cutter, stepover 0.12-0.18mm, speed 18000-22000rpm
Finishing (light cutting):
- φ6-φ4 ball nose cutter, stepover 0.03-0.05mm, ap 0.02-0.03mm, speed 32000-40000rpm, feed rate 2800-3800mm/min
- Mandatory requirements: constant load path + spiral plunge + arc connection + natural aging for more than 24h after each process
Final surface effect: Ra0.2-0.4 mirror surface, position tolerance stably within 0.003mm, customer feedback “smoother than Japanese foundries”.
5. Inspection System: Our Confidence to Make Customers “Rest Assured with Eyes Closed”
Testing center with investment exceeding 3 million:
- Hexagon Global S coordinate measuring machine (detection accuracy 0.0008mm)
- Zeiss profilometer, roundness tester, roughness tester
- German spectrometer (precise composition control)
- 100% coordinate measuring machine full-size inspection for each batch + issuance of SGS-level international reports
Customers often say: Goldcattle’s inspection reports can be directly used for FDA, CE, IATF16949 audits, saving worry to the extreme.
6. Xiamen Goldcattle’s Three Most Proud Real Cases of Precision Machining in 2025
Case 1: European and American customer optical lens holder, tolerance ±0.002mm, Ra0.2, 50 pieces passed 100% at one time, customer directly signed a 3-year exclusive supply agreement.
Case 2: Domestic endoscope titanium alloy core component, position tolerance 0.003mm, original supplier had serious drift, after transferring to us, it is stably controlled within 0.002mm, customer has stable monthly supply of over 2000 pieces.
Case 3: Aerospace UAV electro-optical pod thin-wall shell, wall thickness 0.7mm + tolerance ±0.005mm, using vacuum clamping + liquid nitrogen spindle cooling technology, yield rate stably over 99.5%, highly recognized by customers.
Final Word
Over 26 years, we at Xiamen Goldcattle have evolved from an ordinary processing factory to a hardcore player in the precision machining field “forced” by global customers, with increasingly higher precision and more stable mindset.
There are only 40 days left in 2025. If you also want to make parts to the level that makes customers “kneel and shout amazing”, or are being stuck by ±0.005mm precision problems –
Directly go to the official website www.xmgoldcattle.com to send us your drawings, we provide 24-hour free process review + DFM optimization + precision feasibility analysis, helping you do it right and well in one go!
Xiamen Goldcattle, only making precision parts that make customers rest assured with eyes closed!
Looking forward to working with global partners to push Chinese precision manufacturing to new heights!
