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The Ball Base Grinding Machine for Cylindrical Rollers is the core equipment for bearing roller machining, specifically designed for high-precision grinding of roller ball base surfaces (end face arcs). Its technological advantages are reflected in four dimensions: machining accuracy, efficiency, stability, and intelligence, which directly determine the contact fatigue life, vibration and noise levels, and operational reliability of bearings. The following systematically elaborates on its core advantages from three aspects: technical principles, technological breakthroughs, and engineering value.
1、 Breakthrough in machining accuracy: nanoscale morphology control capability
Geometric accuracy of spherical base surface and arc radius accuracy: ± 0.5 μ m (traditional equipment ± 2 μ m), meeting the requirements of ISO 3290-1 standard P0 level bearings
Surface roughness: Ra ≤ 0.05 μ m (traditional equipment Ra ≥ 0.1 μ m), and the uniformity of contact stress distribution is improved by 30%
Contour error: ≤ 1 μ m (within the entire arc range), ensuring the consistency of the contact line between the roller and the raceway, and reducing the bearing vibration value to ≤ 0.01mm/s ²
Shape control technology online measurement compensation: integrated laser interferometer+CCD vision system, real-time detection of arc radius and eccentricity, error compensation response time<50ms
Grinding wheel dressing accuracy: Using a diamond roller dressing device, the contour accuracy of the dressing wheel is ≤ 0.3 μ m, and the dressing frequency is increased to three times that of traditional processes
2、 Processing efficiency improvement: single piece working hours reduced by more than 50%
High speed grinding technology with grinding wheel line speed: up to 120m/s (traditional equipment ≤ 60m/s), material removal rate increased by 200%
Feed rate: Axial feed 0.5mm/s, radial cut 0.01mm/rev, balancing efficiency and surface quality
Automated loading and unloading system mechanical arm cycle time: ≤ 3s/piece (including positioning, clamping, and detection), increasing manual efficiency by 10 times
Flexible production capacity: supports quick switching of rollers with diameters ranging from 5 to 50mm and lengths ranging from 5-120mm, with a changeover time of less than 15 minutes
3、 Enhanced process stability: full process error control
Thermal deformation compensation technology for grinding wheel shaft cooling: using a dual cycle oil cooling system, the spindle temperature rise is ≤ 0.5 ℃/h, and the thermal deformation error is<0.8 μ m
Workpiece cooling: High pressure cutting fluid (pressure 3MPa) is precisely sprayed onto the grinding area to reduce residual stress on the workpiece surface to ≤ 50MPa
Vibration suppression design bed structure: natural granite base+resin concrete composite bed, natural frequency>150Hz, vibration resistance increased by 3 times
Grinding wheel dynamic balancing: Online automatic balancing system (accuracy ≤ 0.1g · mm), reducing vibration pattern defect rate to<0.1%
