2025.8 Case of Customized Automotive Components: ISO Certification + Five-axis CNC, Overcoming the Challenge of ±0.015mm Precision Processing

As a company with ISO 9001 quality management system certification and specializing in processing and customizing hardware products for 20 years, we focus on "precise equipment and compliant processes" and solve high-demand processing requirements. In August 2025, a new energy vehicle manufacturer commissioned us to customize a small batch of precision automotive hardware connectors. Using five-axis CNC technology + ISO control, we overcame the "high precision, short cycle, and compliance" triple challenges.

Core customer requirements and pain points
The customized automotive motor hardware connectors need to be customized, which directly affects the stability of the motor, and the requirements are strict:
✅ Precision: The tolerance of the center hole diameter is ±0.01mm, and the surface finish is Ra0.4μm (to avoid abnormal noise / wear);
✅ Cycle: The production and inspection within 14 days (supporting new vehicle research and development, and delays will affect the node);
✅ Compliance: Complete processing traceability records (raw material reports / process data) are required, in line with the automotive ISO 9001 standard.

Customization solution: Technology + Certification Dual Drive
In response to the pain points, with "five-axis CNC processing center + ISO 9001 process" as the core, combined with the design team's full follow-up:
1. Five-axis CNC technology: Overcoming micro-precision challenges
Equipment: Five-axis CNC processing center, completing milling, drilling, and chamfering with one setup, avoiding multiple setup errors;
Process: Diamond tools for precise turning + precise cooling and temperature control, with a final hole diameter tolerance qualification rate of 99%, and a surface finish of Ra0.4μm.

2. ISO 9001 compliance control: Quality traceability
Testing: Sampling every 20 pieces with a three-coordinate measuring instrument for testing, data uploaded in real time; 100% full inspection of finished products (dimensions, appearance, hardness), issuing the "finished product test report";

Delivery: Simultaneously providing "raw material reports + process records + finished product reports", meeting compliance traceability.

3. Team collaboration: Compression of delivery cycle
Design: Modeling and simulating processing paths, optimizing tool parameters, and the equipment debugging time was reduced from 2 days to 6 hours;

Production: Five-axis automated processing, completing small batch production within 14 days
Cooperation results: Exceeding expectations in meeting requirements

Customer laboratory testing + feedback after sample assembly:
Precision: Sampling 50 sets, the hole diameter tolerance is within ±0.012mm (better than the ±0.015mm requirement), the motor operates without abnormality;
Compliance: The traceability documents comply with automotive ISO standards, successfully passing the quality review.

We are supported by "precise equipment + ISO certification + professional team", capable of undertaking customization requirements for automotive components (micro-precision), outdoor hardware, etc., providing "precision, cycle, and compliance" controllable solutions. Do you have hardware customization needs? Welcome to consult, let ISO certification strength protect you!