Servo-Driven Gate Control for Shot-Blasting Precision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional shot-blasting devices lack the precision to adjust the lower limit of the shot amount accurately, leading to potential defective products and excessive load on components due to insufficient control over the motor current value of the impeller.
Innovation Solution
A shot-blasting device equipped with a distributor, impeller, processor, cylinder, and servo motor, where the processor adjusts the degree of opening of the gate using the servo motor to maintain a load current value within a set range, including a lower limit, thereby ensuring precise control over the shot amount.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If only a shutter plate or a gate and a cylinder are used to adjust the shot amount, then the device complexity is reduced, but the manufacturing precision of the shot amount adjustment is insufficient
Solution Approach 1:
The patent replaces the conventional mechanical gate-cylinder adjustment system with a servo motor-driven cylinder system. The servo motor provides precise positional control of the cylinder, which in turn enables accurate adjustment of the gate opening degree. This substitution of the simple mechanical system with a servo-controlled system resolves the contradiction by achieving high precision shot amount adjustment while maintaining reasonable device complexity through the use of advanced control technology.
Solution Approach 2:
The patent changes the control parameter from simple gate opening/closing to precise degree-of-opening control. By using the servo motor to control the cylinder position, the system can adjust the gate opening degree to specific values, enabling fine-tuned shot amount control. This parameter change approach allows the system to achieve the required manufacturing precision for shot amount adjustment.
2Reliability
If the shot amount adjustment range is limited by the accuracy of conventional adjustment mechanisms, then the device complexity is kept low, but the reliability of product quality control deteriorates
Solution Approach 1:
The patent implements a feedback control mechanism where the processor monitors the motor current value of the impeller and adjusts the servo motor-driven gate accordingly. The system compares the actual motor current with the target current range and modifies the gate opening degree to maintain the current within the specified range. This feedback loop ensures reliable product quality control by continuously adjusting the shot amount based on real-time motor current measurements.
Solution Approach 2:
The patent replaces the open-loop mechanical gate adjustment system with a closed-loop servo-controlled system. The servo motor provides precise and repeatable positioning of the gate, enabling reliable control of the shot amount. This substitution ensures that the system can consistently maintain the motor current within the target range, thereby improving product quality control reliability.
3Manufacturing precision
If the gate opening degree cannot be finely adjusted, then the ease of operation is maintained, but the manufacturing precision of shot amount control deteriorates
Solution Approach 1:
The patent replaces manual gate adjustment with automated servo motor control driven by a processor. The processor calculates the required gate opening degree based on the target motor current range and automatically positions the gate via the servo motor. This automation eliminates the need for manual fine-adjustment operations while achieving high precision shot amount control, thus improving manufacturing precision without compromising ease of operation.
Solution Approach 2:
The system performs self-adjustment of the gate opening degree based on real-time motor current feedback. The processor automatically modifies the gate position to maintain the motor current within the target range, eliminating the need for operator intervention. This self-service capability ensures precise shot amount control while maintaining ease of operation, as the system autonomously optimizes its own performance.
Data Source
AI summary
An object is to adjust a lower limit of a shot amount with high accuracy. A processor of a shot-blasting device adjusts a degree of opening of a gate of a distributor, which supplies a blasting medium, by subjecting a cylinder in a state of opening the gate to position control with use of a servo motor, so that a load current value of a motor of an impeller falls within a set range having a current lower limit.