Robot-Integrated Polishing Machine

A robot-integrated polishing machine is a fully automated abrasive grinding system that uses sandpaper belts. The main components of the machine include the belt deviation adjustment unit, spindle head, and auxiliary support components.

The machine is designed to automatically stop if the abrasive belt breaks and is equipped with a belt deviation control system, ensuring stable and precise operation throughout the polishing process.

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Robot-Integrated Polishing Machine: 

 Robot-Integrated Polishing Machine

Main components of the machine include two belt grinding heads, a complete machine frame, and an electrical control system.

Main Structural Features and Working Principle

1. Belt Grinding Heads

  • Upper belt grinding head: Provides the drive for the abrasive roller to rotate. A felt wheel is mounted on the spindle of the active rubber roller. The belt drive mechanism includes the active rubber roller, passive rubber roller, and aluminum tension roller, among others. Components such as the precision force slide rail, pneumatic tension cylinder, and force cushion cylinder maintain the tension and pressure of the belt. The felt wheel is fixed on the spindle of the active rubber roller, so it cannot compensate for felt wheel wear.
  • Lower belt grinding head: The specifications are similar to the upper grinding head, except that it does not include a felt wheel.

2. Complete Machine Frame: The main body of the machine is welded from structural steel, while other components are machined from #45 steel and A3 steel plates.

3. Electrical Control System This system is operated via PLC, human-machine interface (HMI), and automation controls. Safety is ensured through earth leakage switches, fuses, grounding devices, etc. The automated control system guarantees normal machine operation while ensuring the safety of both operators and equipment.

4. Processing Procedure: The robot securely holds the workpiece and first performs rough grinding using the lower belt, then moves to the upper belt for medium grinding, and finally performs fine grinding with the felt wheel.

5. Electrical Control System: The electrical control system is connected to the robot, which controls the entire operation.

6. Spindle Speed: The spindle rotates at approximately 2,800 RPM.

Design of a Belt Grinding Machine with Felt Wheel Integrated with a Robot

Design of a Belt Grinding Machine with Felt Wheel Integrated with a Robot

Technical Specifications

Motor: 4 kW, 380V, 50Hz

Spindle Speed: 2,160 RPM

Abrasive Belt Size: 2100 × 50–500 mm

Polishing Wheel Size: Ø150–350 mm × W 50–100 mm (optional)

Applications of the Machine

  • The grinding heads can accommodate abrasive belts, felt wheels, coir wheels, cloth wheels, etc., and can compensate for wheel wear.
  • When integrated with a robotic arm, the machine can process workpieces of various shapes and materials such as copper, aluminum, iron, low-alloy metals, and aluminum alloys.
  • Fully automated with the robot, the system positions and operates the machine without manual intervention, ensuring consistent product quality.

Typical workpieces: small metal components.

***For reference: Belt Grinding Machine

Video of machine operation with actual products:

For detailed consultation on the Robot Polishing Machine, as well as other machinery and auxiliary materials from LEKAR Group, please contact:

LEKA POLISHING TECHNOLOGY JOINT STOCK COMPANY – LEKAR GROUP

Head Office: Unit 11, Louis VII Street, Louis City Urban Area, Xuan Phuong Ward, Hanoi.

Northern Branch: Lai Xa Industrial Cluster, Hoai Duc, Hanoi. Tel: 0243 7646469

Southern Branch: Nam Tan Uyen Industrial Park, Tan Hiep Ward, Ho Chi Minh City. Tel: 02873 033386