Progressive Die for Automotive Permanent Magnet Motor Core

The core magnetic components of permanent magnet motors used in electric vehicles (EV), hybrid electric vehicles (HEV), and internal combustion engine (ICE) auxiliary systems (power steering, cooling fans). Designed to meet the stringent magnetic and dimensional requirements of automotive PM motors, this Progressive Die for Automotive Permanent Magnet Motor Core integrates 20-32 stamping stations in a rigid, anti-vibration structure, delivering consistent component quality with a dimensional tolerance of ±0.003mm—critical for PM motor torque density (≥40 N·m/kg) and energy conversion efficiency (≥97%).

Manufactured under IATF 16949:2016 and ISO 9001:2015 quality standards, the PM motor core progressive die is fully compatible with high-speed automated stamping lines (60-90 strokes per minute) and features integrated in-die laser inspection systems for real-time quality control (defect detection rate ≥99.95%). Compatible with all major automotive PM motor brands (Bosch, Continental, DENSO, Valeo), it seamlessly integrates into global automotive component manufacturing systems, reducing production scrap rate to 0.06% compared to conventional progressive dies.

Product Series

DT-PD-PM1 Series (EV Traction PM Motor)

±0.003mm accuracy, 850,000 strokes life, 50-200kW traction motor cores. Ideal for BEV/HEV passenger car PM motor mass production.

DT-PD-PM2 Series (ICE Auxiliary PM Motor)

±0.004mm accuracy, 800,000 strokes life, 0.5-5kW auxiliary motor cores (power steering/cooling fan). Suited for ICE vehicle PM motor production.

DT-PD-PM-Custom Series (OEM Automotive PM Motor)

Tailored dimensional accuracy (±0.002-0.005mm), custom stamping stations (18-36), compatible with silicon steel (27Q120/35W250). Designed for brand-specific automotive PM motor production.

Core Advantages

1. PM Motor-Grade Precision for Maximum Torque Density

6-axis CNC machining with ±0.0006mm positioning accuracy and in-die laser gauging systems ensure component dimensional tolerance of ±0.003mm—critical for stator/rotor air gap uniformity (≤0.006mm) and PM motor torque density (≥40 N·m/kg). Consistent precision eliminates post-stamping machining, improving production yield to 99.8% for automotive PM motor cores.

2. Magnetic Performance Optimization for Energy Efficiency

Specialized punch edge design with micro-radius (R0.01mm) and low-stress material feeding system minimize silicon steel (27Q120/35W250) plastic deformation and residual stress, preserving the material's magnetic permeability (≥1.8 T) and reducing core loss by 8-10%. This optimization directly improves PM motor energy conversion efficiency (≥97%) and extends EV driving range by 3-5%.

3. High-Hardness Coated Tool Steel for Extended Service Life

Core die components made of ASP23 (powder metallurgy steel) and SKD11 (cold work steel) with TiCN coating (hardness ≥66 HRC) deliver 850,000+ stamping strokes—2.4x longer than standard dies (350,000 strokes). The TiCN coating provides high-temperature resistance (up to 450°C) and wear resistance, extending maintenance intervals to 220,000 strokes (vs. 80,000 for conventional dies).

4. Rigid Anti-Vibration Structure for High-Speed Stamping

Reinforced die frame made of S50C high-strength steel with stress-relief heat treatment (HV ≥220) and precision guide pillars (runout ≤0.001mm) ensures zero stamping deviation even at 90 strokes per minute. The symmetric structural design minimizes vibration during high-speed production, maintaining consistent precision for 24/7 mass production lines of automotive PM motors.

5. Full Compatibility with Automotive Manufacturing Standards

Compliant with IATF 16949:2016 automotive quality standards and fully compatible with automated material feeding, stacking, and traceability systems (laser marking integration). The die supports both grain-oriented (GO) and non-grain-oriented (NGO) silicon steel (0.25-0.5mm thickness), meeting global automotive PM motor material requirements (EU REACH, US EPA).

6. Modular Customization for Diverse PM Motor Requirements

Full customization of stamping stations (18-36), material compatibility (0.25-0.5mm silicon steel), surface finish (Ra ≤0.4μm), and dimensional tolerance (±0.002-0.005mm). Optional features include in-die stacking lamination, insulation coating compatibility, and anti-corrosion treatment—meeting global automotive OEM requirements for PM motor core production.

Technical Specifications

Application Scenarios

Deaote's Progressive Die for Automotive Permanent Magnet Motor Core is engineered for global automotive component manufacturers across diverse sectors:

● EV Traction PM Motors: Mass production of 50-200kW stator/rotor core components for BEV/HEV passenger car/truck traction motors

● ICE Auxiliary PM Motors: Production of 0.5-5kW stator/rotor core components for power steering, cooling fan, and water pump PM motors

● Commercial Vehicle PM Motors: Custom stamping of core components for electric bus/truck traction PM motors (100-300kW)

● Automotive OEM Manufacturing: Custom die solutions for global automotive OEMs (Bosch, Continental, DENSO, Valeo, Tesla) for brand-specific PM motor production