What is Worm
Purpose: The core worm of the automotive electric power steering (EPS) system, responsible for transmitting steering torque and ensuring self-locking; Material: HRC60±2 degree high hardness alloy; Geometric characteristics: small modulus precision thread structure, tolerance requirement ±0.01mm; Common risks: insufficient machining accuracy leads to steering stuttering, rough surface affects transmission efficiency, and fast wear of hard material processing tools.
High Precision Whirling Core Pain Point
There are three major bottlenecks in the milling of traditional vertical machining centers: (1) low efficiency (more than 1 hour for single part processing); (2) Poor surface roughness (Ra> 1.6μm); (3) Short service life of hard material processing tools (30% lower than MX500-N50); (4) High labor costs (one person, one machine); (5) High scrap rate (≥5%).
High Precision Whirling Process
Blank → cyclone milling finishing→ surface treatment→ inspection
Key points of the sub-link
- Cyclone milling finishing: MX500-N50 cyclone milling unit (rotation speed 2000-5000r/min) is used to quickly remove the allowance, and the feed speed is increased by 3 times; C-axis direct drive motor + grating closed-loop control to ensure thread tolerance ± 0.01mm;
- Surface treatment: optimize the cutting parameters (feed 0.1mm/r, cutting depth 0.05mm) to achieve Ra≤0.3μm;
- Testing: CMM closed-loop verification to ensure 100% qualified delivery.
MX500-N50 External Screw Whirling Machine
MX500-N50 precision cyclone milling is a special machining machine tool for small modulus precision worm, planetary screw, trapezoidal thread and other parts. Adopting full closed-loop control technology, it can process HRC60±2 degree hard materials, with a surface roughness of Ra 0.3μm or less, and the pitch accuracy meets the JIS B1192-C5/GB/T17587.3-P5 standard. The equipment has strong stability, simple operation, and supports the production mode of one person and multiple machines, effectively reducing labor costs and production cycles.
High Precision Whirling Earnings Data
| Indicators | MX500-N50 | Traditional Vertical Machining Center |
|---|---|---|
| Processing Efficiency | ≥50% Improvement | – |
| Surface Roughness (Ra) | ≤0.3μm | ＞1.6μm |
| Tool Life | 30% Extension | Conventional |
| Defect Rate | ≤1% | ≥5% |
| Labor Cost | 60% Reduction | 1 operator per machine |
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