New Energy Vehicle Ball Bearing Assembly Line
New energy vehicle bearing assembly line
The new energy vehicle bearing assembly line project is an automated and intelligent production system designed specifically for the core bearings of new energy vehicles (drive motor bearings, wheel hub bearing units, transmission system bearings, etc.), which solves the pain points of traditional assembly lines such as"insufficient accuracy, low efficiency, and weak adaptability", and meets the special needs of new energy vehicles for bearings with"high speed, low friction, long life, and lightweight".
1. Assembly accuracy: Dimensional deviation ≤ 2 μ m, clearance control accuracy ± 0.005mm;
2. Detection coverage: 100% online detection (size, clearance, vibration, sealing);
3. Flexible adaptation: Change time ≤ 30 minutes (compatible with multi specification bearings ranging from 20 to 100mm)
1. Cost reduction: Reduce labor costs by 75% (only 1 inspector is needed for a single line, traditional lines require 8-10 people);
2. Quality improvement: The product yield has been increased to over 98%, and the defect rate has been reduced to below 0.1%;
3. Green: Energy consumption reduced by 20%, wastewater discharge reduced by 5000 tons per year
The technical architecture of the new energy vehicle bearing assembly line project is based on the core process of"pre-processing core assembly comprehensive testing post-processing intelligent control". Each module integrates exclusive equipment and technology, and customized design is made for the characteristics of new energy vehicle bearings:
The core technology of the project differs from traditional assembly lines and is developed around the characteristics of new energy vehicle bearings
High precision centering and fitting technology: In response to the"high coaxiality"requirements of drive motor bearings,"dual servo motors+visual positioning"are used to correct the deviation of the inner and outer circle centers in real time during fitting, ensuring coaxiality ≤ 0.003mm and avoiding vibration noise at high speeds (traditional manual fitting has a coaxiality of only 0.01mm, which can easily cause motor abnormal noise);
Low friction assembly process: By precise control of grease injection (± 5%) and optimization of cage interference (0.002-0.003mm), the friction coefficient of the bearing is reduced to below 0.0015 (traditional bearings are about 0.002), which can help new energy vehicles increase their range by 5-8km (refer to technical solution in abstract 4);
Full process data loop: The MES system is linked in real-time with the detection equipment, and the"size clearance vibration sealing"data of each bearing is generated into electronic files, supporting traceability by the host factory (such as Xiaomi Automobile and Chery Automobile requiring bearing life cycle data to be traceable).