Resin Clamping Block Removal Device for Turbine Blades
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Solution Overview
Problem
Existing methods for removing resin clamping blocks from turbine blades after processing are inefficient, as they often result in damage to the blade due to mechanical strikes and limited positioning flexibility, which degrades processing accuracy and efficiency.
Innovation Solution
A device with a seat part, sliders, wedge members, and an ascending-and-descending mechanism that generates cracks in the resin clamping block for controlled separation, and a clamping jig with rotationally-symmetric positioning features allowing multiple fixation postures to enhance positioning and processing flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a mechanical strike is applied to the resin block to remove it from the turbine blade, then the resin block can be broken and removed, but the strike force cannot be adjusted which may cause damage to the turbine blade or incomplete breaking of the resin block
Solution Approach 1:
The resin clamping block is designed with pre-formed notches that segment the block into controlled regions. These notches act as stress concentration points that guide crack propagation, allowing the block to break into manageable pieces along predetermined paths rather than random fragmentation, thereby enabling complete removal without damaging the turbine blade.
Solution Approach 2:
The notches are pre-formed in the resin block before clamping and processing. This preliminary action prepares the block for controlled breaking by creating weak points that will guide fracture propagation during removal, eliminating the need for adjustable strike force and ensuring consistent, safe removal every time.
2Manufacturing precision
If a groove in the resin-made clamping block is engaged with a positioning strip on the supporting surface to position the resin-made clamping block, then the resin-made clamping block can be positioned, but only in one posture which degrades working efficiency when processing from various directions is necessary
Solution Approach 1:
The positioning structure uses an asymmetric groove in the resin block that engages with a corresponding asymmetric positioning strip on the supporting surface. This asymmetric design allows the block to be positioned accurately in multiple different postures (e.g., 0°, 90°, 180°, 270° orientations) while maintaining precise positioning in each posture, enabling efficient processing from various directions.
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
Enables reliable and efficient removal of resin clamping blocks without damaging the turbine blade, improving processing accuracy and flexibility by allowing controlled crack generation and multiple fixation postures.
Implementation Method 1
a pair of wedge members provided respectively on the paired sliders and generating cracks by engaging with first notches which are formed respectively in a pair of side surfaces
Data Source
AI summary
When, while a resin-made clamping block molded to cover a part of a turbine blade is placed on a seat part, paired sliders disposed on opposite sides of the seat part are made to move closer to the resin-made clamping block, paired wedge members provided respectively on the paired sliders engage with notches formed respectively in paired side surfaces, opposed to each other, of the resin-made clamping block to generate cracks. Accordingly, it is possible to divide the resin-made clamping block into at least two pieces and to reliably remove the resin-made clamping block from the turbine blade. Furthermore, since the resin-made clamping block is not broken by a mechanical strike, there is no fear that the turbine blade might be damaged due to an erroneous setting of the strike force.