The direction of the blasting wheel is primarily controlled by adjusting the control cage; by altering the position of the control cage's window, the shot trajectory angle and coverage area are regulated.

**Core Adjustment Principles and Steps**

*   **Shutdown and Loosening:** After shutting down the machine, loosen the control cage's clamping blocks or fastening bolts to allow the control cage to be rotated manually.

*   **Rotational Adjustment:** Rotate the control cage to change the position of its window. Adjusting it in the direction of the blast wheel's rotation shifts the shot trajectory forward; adjusting it in the opposite direction shifts it backward.

*   **Tightening and Locking:** Once the desired position is reached, retighten the bolts to secure the control cage and prevent it from loosening during operation.

**Commissioning and Verification Methods**

*   **Test Blasting:** Place a wooden board coated with black ink—or a sheet of thick paper—at the workpiece's position. Start the blast wheel and introduce a small quantity of shot media.

*   **Pattern Observation:** Inspect the resulting blast pattern to ensure that the area of highest shot density covers the workpiece being cleaned, while avoiding impact against the internal walls of the blasting chamber.

*   **Fine-tuning and Optimization:** If the positioning is inaccurate, repeat the adjustment process until the ideal blast zone is achieved, thereby ensuring cleaning efficiency.

**Important Considerations and Parameters**

*   **Angle Range:** The radial projection angle of the shot media is typically around 60 degrees, with the commonly utilized blast angle falling within the range of 30° to 60°.

*   **Motor Rotation Direction:** Adjustments to the blast direction must take into account the motor's direction of rotation (left-hand or right-hand); clockwise and counter-clockwise adjustments will yield different results.

*   **Dynamic Balance:** Ensure that the orientation of the control cage's opening aligns correctly with the direction of the blast wheel blades to maintain the dynamic balance of the blasting head and prevent equipment malfunctions.