Long Member Assembly Alignment Using Laser-Tracked Reference Coordinates
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Solution Overview
Problem
The challenge lies in precisely detecting the actual position of long members with low rigidity, which often bend, and setting a reference point and coordinate system for accurate assembly, especially in complex shapes like aircraft stringers, where traditional fixing jigs are inadequate.
Innovation Solution
An assembly manufacturing device with gripping parts, a retaining part, a drive part, a detecting part, and a control unit that adjusts the gripping parts based on the original shape and calculated reference coordinates to match the stored shape of the long member, utilizing laser light reflection for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixing jig is used to hold the long member, then the long member can be prevented from bending, but various types of complex shaped fixing jigs need to be prepared for different stringer shapes
Solution Approach 1:
The robot gripper system can universally handle multiple types of long members with different shapes and sizes through programmable control and adjustable gripping mechanisms, eliminating the need for multiple specialized fixing jigs while maintaining reliable positioning and bending prevention
2Reliability
If multiple robots are used for gripping the long member, then the long member can be securely held, but the degrees of freedom required to handle complex shaped long members increases
Solution Approach 1:
The robot gripper system employs dynamic positioning and adjustable gripping forces that adapt to different long member shapes and sizes, allowing secure holding without requiring excessive degrees of freedom through real-time control adjustments
3Ease of operation
If the position of the long member is detected using traditional methods, then the reference point can be set, but detection errors occur due to bending and low rigidity
Solution Approach 1:
The system replaces traditional mechanical measurement methods with laser-based optical measurement technology, which can accurately detect the position and shape of long members without physical contact, thereby eliminating errors caused by bending and low rigidity while maintaining ease of reference point setting
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
This solution minimizes position detection errors and enhances precision in setting reference points and coordinates, ensuring accurate alignment and assembly of long members with complex shapes.
Implementation Method 1
providing a target on both a stationary object and the equipment portion to be removed, and measuring the positional coordinates using a laser measuring apparatus
Data Source
AI summary
An object of the present invention is to provide an assembly manufacturing device and an assembly manufacturing method capable of reducing error when the actual position of a long member is detected, and precisely setting a reference point and a coordinates system. The long member assembly apparatus provides a plurality of hand parts for gripping a long member, a touch plate for securing the first end of the long member and restricting the movement of the long member in the longitudinal direction, a laser tracker for detecting the installation position of the touch plate, and a reference determining part for determining reference coordinates or reference point to be used in for adjusting the position of the hand parts, based on the installation position of the touch plate detected by the laser tracker.