Vertical Compound Superfinishing Machine
The vertical compound superfinishing machine is a core device used in the final stage of bearing manufacturing. It uses fine-grit abrasives (such as oilstones) to perform micro-cutting and polishing on raceways and grooves of bearing rings. The main function is to reduce surface roughness, eliminate waviness, create residual compressive stress, and enhance the bearing's fatigue life and NVH (Noise, Vibration, and Harshness) performance, all while maintaining the workpiece's shape accuracy. It is widely used for ultra-precision grinding of large bearing rings, such as automotive bearing rings, wind power and rail transport large rings, and thin-walled spindle rings for machine tools.
Technical Specifications
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| Workpiece | Outer Diameter | 130 - 650mm | 320 - 1000mm | 550 - 1600mm | 800 - 2500mm | 2300 - 4000mm |
| Inner Diameter | 120 - 600mm | 300 - 950mm | 500 - 1500mm | 700 - 2300mm | 2100 - 3900mm | |
| Width | 20 - 300mm | 30 - 450mm | 30 - 550mm | 100 - 580mm | 100 - 600mm | |
| RW Angle | ±40° | |||||
| Weight | 150 kg | 250 kg | 450 kg | 1200 kg | 2500 kg | |
| Floor Area | 3.4×3.4m | 5.5×3.5m | 6.5×3.6m | 7.0×3.6m | 10.0×5.6m | |
| Machine Weight | 15000 kg | 37000 kg | 42000 kg | 42000 kg | 65000 kg | |
| Nominal Current | 130 A | 220 A | 270 A | 300 A | 400 A | |
| Air Pressure | 5-8 bar | |||||
Key Advantages
- High-Frequency Oscillation and Micro-Feed Compound Process: By using a compound motion combining micro-cutting and polishing, surface roughness of the raceway can be reduced to Ra ≤ 0.02 μm.
- Eliminates Grinding-Induced Tensile Stress: This process effectively enhances the bearing's lifespan by eliminating tensile stress generated during grinding.
- Advanced Oil Film Technology: Minimizes precision loss by mitigating thermal deformation and stress concentration through precision oil film technology.
- Enhanced Throughput: Optimizes both auxiliary and superfinishing cycles to deliver higher production efficiency and shorter lead times.
- Customizable Range: The machining range can be customized according to customer needs, making it adaptable for processing thin-walled bearing rings of various sizes and technical requirements.