HK-380 Programmable High-Precision Surface Finishing Machine  

The HK-380 is a programmable high-precision surface finishing machine with adjustable speed, capable of processing materials such as ceramics, quartz, glass, metal, and plastic. It features independent self-rotation and orbital rotation combined motion for ceramic rings, ensuring uniformity and consistency in grinding quality. Both rotations offer stepless speed control. The intelligent display allows programming of rotational speeds between 10 and 110 rpm, meeting the requirements for three distinct grinding stages with different speeds and durations. Grinding time can be freely set according to processing needs. When the orbital speed reaches 110 rpm, the flatness runout of the grinding disc remains within 0.005 mm. The machine automatically records the number of grinding cycles, helping operators adjust grinding time based on abrasive paper usage. The grinding disc can be easily removed by simply lifting it up. Waterproof materials are used throughout the machine, ensuring electrical components and the housing are fully sealed and protected against water ingress. 

Grinder Operation Instructions:

1. Plug in the power supply.  

2. The display allows you to freely set grinding time, grinding speed, and buzzer duration according to processing requirements.  

3. The machine can be started gradually, with all settings adjustable.  

4. The liquid drip peristaltic pump operates synchronously with the main motor.  

5. The power outlet must be capable of handling a load exceeding 2000 watts.  

6. The grinder supports various abrasive discs, including synthetic resin iron discs, cast iron discs, synthetic copper discs, tin discs, and sandpaper discs. All these discs can be bonded to the grinding carrier plate using resin AB adhesive. After bonding the grinding disc with resin AB adhesive, wait at least 8 hours before machining with the tool sharpening machine tailstock.  

7. Note: When attaching the grinding disc, ensure that the three material-stop devices are not obstructed. During flat surface dressing, carefully check whether the stop devices interfere with operation.  

8. Adjust the tailstock of the tool sharpening machine to achieve the desired flatness, then return the tailstock to its original position and disconnect the power supply.  

9. Adjust the retaining ring support arm to the middle height of the ceramic ring, and set the required grinding time and disc rotation speed.  

10. Press the green start button to activate the machine and clean the equipment thoroughly.

Main Technical Specifications:  

1. Grinding machine model; HK-380

2. Maximum workpiece processing range: φ180 mm  

3. Grinding machine feeding station positions: 3 sets  

4. Overall dimensions of the grinding and finishing machine: 1330 × 760 × 1250 mm  

5. Net weight of the grinding and finishing machine: 280 kg  

6. Maximum load capacity of grinding disc: 60 kg  

7. Grinding carrier disc dimensions: φ380 × 15 mm  

8. Dynamic runout of grinding carrier disc: < 0.005 mm  

9. Flatness tolerance of grinding carrier disc: < 0.002 mm  

10. Speed settings:  

   - First stage: 3–120 rpm  

   - Second stage: 3–120 rpm  

   - Third stage: 3–120 rpm  

11. Time settings:  

   - First stage: 1–120 min  

   - Second stage: 1–120 min  

   - Third stage: 1–120 min  

12. Power supply: Single-phase 220 V / 50/60 Hz, power: 1.5 kW  

13. Optional power supply: Three-phase 380 V, single-phase 220 V, three-phase 220 V, three-phase 480 V  

14. Total machine power consumption: 2.0 kW  

15. Automatic drip feeder speed: D1-100rpm