Growing Demand for Brake Disc Machining in the Automotive Industry
The rapid development of the automotive industry has led to an increased demand for high-quality vehicle components. For manufacturers, ensuring both high performance and timely delivery of parts is essential. Consequently, enhancing machining technology and improving production efficiency has become a top priority.
Overview of the Brake Disc Machining Process
Brake discs are typically made from gray cast iron that meets China’s HT250 standard, equivalent to the American G3000 standard. The standard brake disc machining process consists of seven key steps:
1. Rough turning off the outer diameter and end face
2. Semi-finish turning off the outer diameter and end face
3. Finish turning off the outer diameter and end face
4. Milling of the end face groove
5. Drilling
6. Deburring
7. Inspection and storage
CBN Tools for High-Volume Brake Disc Production
CBN (Cubic Boron Nitride) tools are widely used in large-scale brake disc production due to their superior performance in demanding machining environments. Key advantages of CBN tools include:
- High Hardness: Capable of handling high-strength brake disc materials effortlessly.
- Excellent Wear Resistance: Extends tool life and reduces tool change frequency.
- High-Speed Cutting Compatibility: Improves machining efficiency and reduces production costs.
CBN tools are particularly effective for machining critical areas such as the upper and lower faces of brake discs, making them indispensable for achieving high production efficiency.
Case Study: Application of CBN Tools in Brake Disc Machining
Workpiece Information
- Machining Area: Upper and lower faces of brake discs
- Material: HT250
Insert Model and Cutting Parameters
- Insert Model: SCGN090412
- Cutting Speed: VC = 500-900 m/min
- Feed Rate: Fr = 0.25 mm/r
- Cutting Depth: ap = 0.3 mm
- Machining Method: Double cutting (either double cutting on side A or simultaneous feed on AB faces)
Conclusion
The strategic use of CBN tools has significantly enhanced both the efficiency and quality of brake disc machining and reduced production costs. As tool technologies evolve, their application in automotive component manufacturing is expected to expand even further.
