Adapted to Flexible Production Lines: SMARTWIN Intelligent Equipment Builds High-Precision Data Sensing with DDA Outer Rotor Torque Motors

Adapted to Flexible Production Lines: SMARTWIN Intelligent Equipment Builds High-Precision Data Sensing with DDA Outer Rotor Torque Motors

Nowadays, high-end manufacturing lines are comprehensively upgraded toward mixed production of multi-specification workpieces, digital twin management and predictive maintenance systems. Conventional rotary tables driven by reducers suffer from obvious drawbacks including transmission lag, large backlash errors and insufficient collection of operational data. Meanwhile, standard integrated DD motors are limited by narrow hollow bores and insufficient heavy-load capacity in practical applications. As a domestic independent R&D manufacturer of core direct-drive components, SMARTWIN Intelligent Equipment’s DDA outer rotor torque motors serve as the core hardware support for rotary actuators on intelligent flexible production lines, relying on integrated high-precision encoders, full-range torque specifications and high-dynamic direct-drive architecture.

The DDA series integrates a built-in absolute circular grating, which collects multi-dimensional raw data including high-precision angle, rotational speed and winding load in real time. Data is uploaded to the industrial upper computer platform via the EtherCAT fieldbus through the matched AKS servo drives. Relying on continuous data streams, the control system implements adaptive compensation of motion trajectories and dynamic torque feedforward adjustment. Meanwhile, an equipment health assessment model is established. By analyzing long-term load fluctuation data, potential risks such as guide rail wear, magnetic circuit attenuation and encoder signal drift  can be predicted, enabling precise maintenance cycle scheduling and effectively reducing unplanned downtime. The absolute encoder features power-off position memory. No homing procedure is required after equipment shutdown and restart, which drastically cuts standby time during product changeover for mixed production of multiple workpieces, perfectly matching the tact time of flexible manufacturing.

The underlying outer rotor direct-drive architecture endows the motor with outstanding dynamic performance. Its fast acceleration and deceleration response shortens the cycle time for station switching. Optimized magnetic circuit with low cogging torque ensures minimal speed fluctuation across the full speed range. No positioning drift occurs during process such as AI visual alignment and arcsecond-level micro-angle fine-tuning, steadily boosting the yield rate of machining and inspection. All models adopt a standardized large through hollow bore design suitable for modular transformation of production lines. No extensive mechanical rework is needed when adding functional modules or adjusting tooling layout, cutting the iteration cost of equipment. A complete torque gradient covers continuous torque from 3 N.m to 97 N.m. Equipment manufacturers can select models directly according to actual load conditions without extra costs for customized non-standard winding development.

The complete motor unit contains no easily worn transmission components such as gears and belts, greatly reducing maintenance costs during long-term continuous operation compared with conventional reducer-driven solutions. The standardized integrated base simplifies disassembly, assembly and maintenance procedure. Supported by SMARTWIN Intelligent Equipment’s nationwide multi-location technical service network, our engineers provide on-site service including mechanical integration and multi-axis synchronous bus debugging. Compared with imported outer rotor DD motors, our customized delivery lead time is shorter and the response efficiency of on-site technical support is higher. This series has been mass deployed in lithium battery cell stacking rotary tables, photovoltaic silicon wafer inspection platforms and semiconductor wafer indexing equipment. With high rigidity and powerful data interaction capability, it facilitates intelligent upgrading of automated production lines.