Visual-Guided Press-Fit Assembly for Shaft-Hole Alignment
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Solution Overview
Problem
The assembly process of shaft-hole fitting parts in industrial manufacturing is time-consuming and costly due to its reliance on manual or semi-automatic operations, leading to inefficiencies and inconsistent quality, which hampers production efficiency and automation.
Innovation Solution
An automatic press-fit control system with a modular design, comprising a control center, loading and unloading control subsystem, visual inspection subsystem, and press-fit control subsystem, which automates the assembly process by controlling material conveyance, visual inspection, and press-fit operations, utilizing industrial robots and sensors to ensure precise alignment and pressure control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual or semi-automatic operations are used for shaft-hole fitting assembly, then operational flexibility is maintained, but assembly efficiency is low and quality consistency is poor
Solution Approach 1:
The patent replaces manual mechanical assembly operations with an automated press-fit system that uses a stamping motor, stamping head, and pressure sensor to perform the assembly task. The control center coordinates the automated subsystems including material conveyor, industrial robot, and press-fit device, eliminating manual intervention while maintaining precise control over the assembly process.
Solution Approach 2:
The system incorporates self-monitoring capabilities through pressure sensors that detect pressure changes during press-fit operations and automatically adjust the stamping process. The visual inspection subsystem automatically detects hole deviations and provides feedback to the control center for real-time correction, enabling the system to self-correct without external intervention.
2Manufacturing precision
If automated press-fit assembly is implemented, then assembly efficiency and quality consistency are improved, but system complexity increases
Solution Approach 1:
The automated assembly system is divided into independent functional subsystems: material conveyor subsystem, visual inspection subsystem, press-fit control subsystem, and control center. Each subsystem performs a specific function and communicates with the control center through standardized interfaces, making the complex system manageable and maintainable while achieving high precision assembly.
Solution Approach 2:
The system uses pressure sensors to detect pressure changes during press-fit operations and feeds this information back to the control center. The visual inspection subsystem also provides feedback on hole position deviations. This feedback mechanism enables real-time adjustments to maintain manufacturing precision without requiring overly complex manual intervention systems.
3Measurement precision
If visual inspection and real-time detection are added, then quality control is enhanced, but device complexity and cost increase
Solution Approach 1:
The patent introduces a visual inspection subsystem as an intermediary between the material loading and press-fit assembly processes. This subsystem uses cameras and image processing to detect hole position deviations, providing measurement data to the control center without directly interfering with the mechanical assembly operations, thus maintaining operational simplicity while enhancing measurement precision.
Data Source
AI summary
The present invention relates to a system and its control method for press-fit equipment for shaft-hole fit parts. The automatic press-fit control system mainly includes a control center, a loading and unloading control subsystem, a visual inspection subsystem, and a press-fit control subsystem, and each subsystem communicates with the control center through a communication interface. The control center automates the operation of each subsystem independently, such as the product loading and unloading process, the visual inspection process, and the press-fit process through the control center. The advantages of the invention are: it can realize automatic loading, inspection, and press-fit of the product, which greatly improves the level of production automation and production efficiency; the control system adopts modular design, and each subsystem can operate independently under the control of the control center; it adopts visual inspection and automatic compensation of angle deviation, with good fault tolerance.