Principle of a Screw and Nut Assembly Machine
Principle of a Screw and Nut Assembly Machine
The operating principle of a screw and nut assembly machine primarily involves core processes such as automatic feeding, precise positioning, and mechanical locking. The specific implementation methods vary between different machine models:
Typical Operating Principle
Automatic Feeding System
Screws, nuts, and other components are arranged and transported to the locking station using a vibrating plate, conveyor belt, or other devices. Some models, such as the PC dual-station screw locking machine, utilize a dual-station design to enable simultaneous loading, locking, and inspection.
Precise Positioning and Clamping
A robotic arm or vacuum suction platform, combined with a vision recognition system, precisely positions and clamps the workpiece, ensuring accurate alignment of the screw and nut.
Mechanical Locking Mechanism
Rotary Automatic Screw Machine: A high-speed rotating bit grasps the screw and precisely inserts it into the workpiece hole, achieving torque control accuracy of up to ±2%.
Expansion Screw Assembly Machine: A robotic arm grasps the screw at preset intervals, and an electric actuator pushes the nut to engage the thread.
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Key Technical Features
Intelligent Control: An integrated AI defect detection system analyzes thread forming quality in real time and provides feedback for adjustment parameters.
High Compatibility: Supports a wide range of screw sizes from M1.4 to M4.0, and is suitable for plastic parts with thicknesses ranging from 1.5 to 5mm.
Energy-Efficient Design: Utilizes a low-power servo motor and a hybrid gas-electric drive to reduce energy consumption.
Application Scenarios
Home Appliance Industry: Assembly of PC components for air ducts on air conditioners, with a double-station, alternating tightening of 8 M3 self-tapping screws in a cycle time of ≤3 seconds per screw.
Automotive Electronics: Attaching ABS panels to dashboards, solving the visual recognition challenge of screw holes on curved workpieces.
3C Products: Attaching router housings, using an anti-static nozzle and vacuum suction platform to prevent scratches on plastic surfaces.