Hydrogen Tank Liner Bead Cutting With Reaction Force Feedback
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Solution Overview
Problem
Manual cutting of welding beads in hydrogen tank liners results in deviations due to varying welding states and worker skill, leading to potential defects in strength, durability, and airtightness.
Innovation Solution
A device with a jig frame, liner mount, bead cutter, and controller that adjusts the cutter's movement based on reaction force detection to minimize cutting deviations and ensure precise removal of welding beads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual cutting of welding bead is performed, then ease of operation is improved, but manufacturing precision deteriorates due to cutting deviation
Solution Approach 1:
The patent replaces the manual mechanical cutting system with an automated cutting device that uses a sensor to detect welding bead position and a controller to automatically adjust cutter movement, eliminating human skill dependency and achieving consistent precision
Solution Approach 2:
The patent implements a feedback mechanism where a sensor detects the actual position of the welding bead, the controller processes this information, and the cutter movement is automatically adjusted in real-time to maintain precise cutting despite variations in welding state or liner rotation
2Productivity
If forward movement distance of cutter is increased, then productivity is improved, but manufacturing precision deteriorates due to excessive cutting
Solution Approach 1:
The patent makes the cutter forward movement distance dynamic rather than fixed, allowing the controller to adjust the movement distance in real-time based on sensor feedback about welding bead position, enabling both high productivity and precise cutting control
Solution Approach 2:
The patent changes the cutting parameter (forward movement distance) from a static predetermined value to a dynamically adjustable parameter that is optimized in real-time based on actual welding conditions detected by the sensor
Data Source
AI summary
A device for machining a hydrogen tank is configured to cut a welding bead disposed at a liner of the hydrogen tank. The device includes i) a jig frame, ii) a liner mount that rotatably supports the liner and applies a rotational force to the liner, iii) a liner outer support that supports an outer circumferential surface of the liner, iv) a bead cutter installed on the jig frame to be movable forward and backward by driving a cutter driver to cut the welding bead, v) a reaction force detection sensor coupled to the bead cutter to detect a reaction force applied to the bead cutter, and vi) a controller configured to control a forward-backward movement distance of the bead cutter by applying a set driving control signal according to a detection signal of the reaction force detection sensor to the cutter driver.