Mobile Robot Scheduling With Secondary Positioning for Precision Machining
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Solution Overview
Problem
Current mobile industrial robots face challenges with low positioning accuracy and rigidity, affecting their working precision, especially when used in coordination with Automated Guided Vehicles (AGVs), which complicates their application in high-precision tasks like aerospace assembly.
Innovation Solution
A high-precision mobile robot management and scheduling system is introduced, featuring industrial robots, AGVs, and secondary positioning devices, where industrial robots are detachably mounted on AGVs and locked onto secondary positioning devices at workstations, allowing for flexible and precise operation independent of AGV positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mobile robots use AGV for movement, then flexibility and application scope are improved, but positioning accuracy and working precision deteriorate
Solution Approach 1:
The system divides the mobile robot into two independent functional modules: AGV for transportation and industrial robot for precision operations. The industrial robot is detachably mounted on the AGV, allowing the precision component to be separated from the mobile platform, thus resolving the contradiction between mobility and positioning accuracy.
Solution Approach 2:
The patent introduces secondary positioning devices as intermediaries between the AGV and the industrial robot. These devices provide precise positioning and locking mechanisms that compensate for the AGV's positioning errors, enabling the industrial robot to achieve high-precision operations despite the AGV's limited positioning accuracy.
2Adaptability or versatility
If mobile robots use AGV for movement, then application scope is expanded, but rigidity and bearing accuracy deteriorate
Solution Approach 1:
The system separates the mobile function (AGV) from the precision operation function (industrial robot). The industrial robot maintains its inherent rigidity and bearing accuracy when mounted on the AGV, while the AGV provides the necessary mobility. This segmentation allows both rigidity and application scope to coexist.
Solution Approach 2:
The secondary positioning devices perform preliminary positioning and stabilization of the industrial robot on the AGV before precision operations begin. This preliminary action ensures that the robot is properly secured and positioned, maintaining rigidity during subsequent high-precision tasks.
3Manufacturing precision
If error correction models are used, then aperture deviation is reduced, but real-time accuracy and stability deteriorate
Solution Approach 1:
The secondary positioning devices act as intermediaries that provide real-time, passive mechanical positioning and error compensation. Unlike software-based error correction models that process data with delays, these mechanical devices immediately compensate for positioning errors through their physical structure and locking mechanisms, ensuring both high precision and real-time reliability.
Solution Approach 2:
The patent replaces software-based error correction models with a mechanical positioning and compensation system. The secondary positioning devices use mechanical structures (such as positioning pins, clamps, or fixtures) to physically correct positioning errors in real-time, eliminating the delays and instabilities associated with computational error correction models.
Data Source
AI summary
The invention discloses high-precision mobile robot management and scheduling system, and relates to the technical field of industrial robots, comprising industrial robot, AGV, secondary positioning device and upper computer, wherein the secondary positioning devices are arranged on corresponding workstations of processing machine tool, when the processing machine tool performs processing tasks, the upper computer selects the AGV arranged with industrial robot and navigates the same to the secondary positioning device, and after the secondary positioning device and the chassis of the industrial robot are locked, the industrial robot can assist the processing machine tool in parts machining. The system in the invention perfectly combines the mobile robot and fixed robot, thereby achieving not only flexibility of mobile robot, but also the high precision of the fixed robot.