How GJ8070 Solves Mold Surface Roughness Challenges and Boosts Yield Rates

For mold manufacturers struggling with inconsistent surface finishes and low yield rates, the GJ8070 High-Precision High-Speed CNC Milling Machine isn't just another tool—it’s a proven solution. In this case study, we dive into how one mid-sized European mold maker reduced their defect rate by 42% within six months of integrating GJ8070 into their production line.

The Problem: A Common Pain Point in Precision Mold Making

A German OEM specializing in automotive injection molds reported an average surface roughness (Ra) of 3.2 µm on finished parts—well above industry standards for high-end applications. Their daily rejection rate hovered around 18%, costing them over €12,000/month in material waste and rework. The root cause? Inconsistent toolpath accuracy and vibration during fine finishing passes.

The Solution: Why GJ8070 Delivers Real Results

The GJ8070’s dual-column structure provides exceptional rigidity—critical for maintaining dimensional stability at high feed speeds. Combined with Fanuc’s latest control system (FANUC Series 30i-B), it delivers sub-micron repeatability across all axes. This means consistent tool engagement and minimal chatter, directly addressing the core issue: surface quality.

Equipped with an HSK-T63高速主轴 (HSK-T63 high-speed spindle), the machine achieves up to 24,000 RPM while maintaining thermal stability—a key factor in reducing micro-vibrations that lead to surface defects. In tests conducted by the client, Ra dropped from 3.2 µm to 1.1 µm after optimizing cutting parameters using GJ8070’s built-in adaptive machining logic.

Why It Matters: More Than Just Numbers

This isn’t just about better specs—it’s about trust. When clients see consistent results, they stop asking “Can you do it?” and start saying “We want more.” For the German customer, improved surface finish allowed them to win contracts with premium-tier automotive suppliers who require Ra ≤ 1.5 µm as standard.

Compared to other machines in its class, GJ8070 offers superior reliability (MTBF > 25,000 hours), faster setup times (<15 mins vs. 45 mins for competitors), and easier integration with existing CAM workflows—all backed by localized service support in Europe and Asia.