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1. Funzione principale
Precision Rotary Drive
Control the θ-axis rotation of the CPP (Component Placement Processor) head to achieve precise component angle positioning (0-360° continuous rotation)
Ensure that the pins of polar components such as QFP and SOP are accurately aligned with the PCB pads (±0.1° angle accuracy)
High-speed placement coordination
Linked with X/Y/Z axes to complete high-speed rotation + linear compound motion (maximum speed 300°/ms)
Support Fly Alignment technology to complete angle correction during movement
Force balance control
Dynamically adjust the rotation torque (0.2-3N·m) to prevent deformation of precision IC pins
2. Funzione principale
Functional Module Technical Implementation Performance Index
High-precision angle control 20-bit absolute encoder + harmonic reducer Repeat positioning accuracy ±0.01°
Dynamic response Brushless DC motor + vector control algorithm 0-300° acceleration time <15ms
Intelligent protection Overload/stalling/overheating triple protection Instantaneous overload capacity 200%
Status feedback Real-time monitoring of current/temperature/vibration data Uploaded to the main control via CAN bus
Self-calibration function Automatically perform zero point calibration when powered on (using mechanical block + photoelectric sensor) Calibration time <30 seconds
III. Flusso di lavoro tipico
Grafico
Codice
IV. Applicazione di funzioni speciali
Modalità microcomponente
Enable microstep control mode (1/16 subdivision) to achieve 0.002° fine-tuning step
Automatically reduce the speed to 150°/ms for 0201 components
Lavorazione di componenti di forma speciale
Supports centroid compensation for asymmetric components (such as connectors/special-shaped shields)
Programmable storage of up to 50 component rotation parameters
Predictive maintenance
Based on current waveform analysis Bearing wear status
Carbon brush life count (remaining life is displayed on the HMI interface)
V. Caratteristiche tecniche
Zero backlash transmission: using harmonic reducer (HD harmonic drive), hysteresis <0.005°
High thermal stability: temperature drift compensation algorithm to ensure that the angle error is <±0.02° in the full temperature range (0-50°C)
Quick replacement design: modular structure, the overall motor replacement time is <5 minutes
VI. Confronto di selezione
Features 03050314 Conventional stepper motor
Angular resolution 0.002° (20-bit encoder) 0.072° (1.8°/step)
Peak speed 600rpm 300rpm
Protection function Full state monitoring + triple protection Overheat protection only
Life cycle 50,000 hours (brushless design) 10,000 hours (brush wear)
VII. Scenari applicativi
High-precision IC mounting:
QFP-256 (0.4mm pin pitch) angle correction
Local angle compensation of BGA (to cope with PCB deformation)
High-speed production line:
75,000 CPH mounting speed achieved with CP20P
Flying centering mode saves 0.3s/component
Special process:
Crimp connector with 15° tilt mounting)
Rotation alignment of multi-chip stacking (POP)
VIII. Raccomandazioni per la manutenzione
Daily inspection:
Daily: monitor operating noise (abnormal noise indicates bearing problems)
Weekly: Check cable wear (especially the curved section of the rotating part)
Manutenzione ordinaria:
Every 6 months: Replace the harmonic reducer grease (Molykote PG-65)
Yearly: Clean the encoder optical window (using anhydrous ethanol)
IX. Emergency handling of faults
Fault phenomenon Quick judgment Temporary measures
Large angle deviation Encoder zero point loss Perform manual calibration (standard fixture required)
Spin jam Harmonic reducer foreign matter intrusion Remove impurities and add grease
CAN communication interruption Terminal resistor missing (120Ω required) Add resistor at the end of the bus
X. Riepilogo
The DP motor is the core component of the CPP work head to achieve ultra-high-speed and high-precision rotation positioning. Its three major technical advantages of brushless design, harmonic drive, and intelligent compensation make it irreplaceable in the field of precision SMT placement. Recommendations:
Perform encoder zero point calibration every quarter
Key production line configuration Hot standby motor (recommended inventory ratio 10%)
Upgrade to the latest ASM firmware to obtain vibration suppression algorithm optimization
