Bolt Fastening Alignment Control Using Torque Sensing Feedback
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Solution Overview
Problem
Existing bolt fastening technologies face challenges in efficiently aligning bolts with fastening holes, particularly in materials like aluminum or plastic, leading to twisting and deformation due to misalignment, which affects production reliability and efficiency.
Innovation Solution
A bolt fastening drive device equipped with a rotary shaft, bit part, sensor part, and drive controller that senses moments of force during fastening, corrects the driving direction, and learns from alignment errors to optimize bolt fastening operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated bolt fastening is implemented, then productivity is improved, but alignment accuracy between bolt and fastening hole deteriorates due to tolerance accumulation
Solution Approach 1:
The sensor part detects the position of the fastening hole before the bolt fastening operation commences. This preliminary detection allows the system to determine the actual coordinates of the fastening hole and calculate the necessary driving direction correction in advance, ensuring accurate alignment before the bolt is inserted and fastened
Solution Approach 2:
The sensor part provides real-time feedback on the fastening hole position and bolt alignment status. The drive controller receives this feedback and dynamically adjusts the rotary shaft's driving direction to compensate for misalignment, creating a closed-loop control system that maintains high precision throughout the automated fastening process
2Device complexity
If bolt fastening direction is not corrected, then device complexity is reduced, but manufacturing precision deteriorates due to twisting and deformation
Solution Approach 1:
The system performs preliminary detection of the fastening hole position and calculates the optimal driving direction before the bolt fastening operation. This advance preparation allows the drive controller to set the correct driving direction in advance, preventing twisting and deformation of low-stiffness materials like aluminum or plastic during the fastening process
Solution Approach 2:
The patent replaces complex mechanical alignment mechanisms with a sensor-based detection and control system. Instead of using elaborate mechanical guides or fixtures to ensure alignment, the system uses sensors to detect hole position and a controller to adjust the driving direction, simplifying the overall device structure while maintaining high precision
3Manufacturing precision
If sensor part is added to detect moment of force, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The sensor part serves multiple functions: it detects the position of the fastening hole, measures the moment of force during bolt fastening, and provides feedback for direction correction. This multi-functionality reduces the need for separate detection and measurement devices, thereby limiting the increase in device complexity while maintaining high manufacturing precision
Solution Approach 2:
The sensor part acts as an intermediary between the mechanical fastening system and the control system. It converts physical quantities (hole position, moment of force) into electrical signals that the drive controller can process, enabling precise control without requiring direct complex mechanical linkages between the sensor and actuator
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances bolt fastening reliability by aligning bolts accurately with fastening holes, reducing twisting and deformation, and improving production efficiency through automated correction and data learning.
Implementation Method 1
the sensor part may be configured to receive a moment of force applied to the bolt, through the second bracket to sense a force in a bolt fastening direction
Implementation Method 2
the second bracket may include a magnet that is coupled to the bolt head, and the magnet may be brought into contact with the bolt head by attraction
Data Source
AI summary
A bolt fastening drive device is disclosed. The bolt fastening drive device includes a rotary shaft coupled to a drive controller and rotated, a bit part in which a first end is coupled to the rotary shaft and a second end is coupled to a bolt so that the bolt is fastened to a fastening hole of a fastening member, a first bracket coupled to the rotary shaft, a sensor part coupled to an inner portion of the first bracket, and a second bracket in which a first portion is brought in contact with a bolt head of the bolt and a second portion is coupled to the sensor part.