Peelable Shim Drilling Under Compression for Faster Machining

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Solution Overview

Problem

Current methods for manufacturing peelable shims are costly and time-consuming, requiring extensive use of flanges or vices for maintaining compression during drilling and machining, which limits productivity.

Innovation Solution

A method involving drilling through holes in a peelable stack under transverse compression using a drilling tool, followed by shaft installation and machining while applying compression to maintain structural retention, allowing for independent pressure maintenance without flanges or vices, and performing these steps in a separate workshop.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If flanges or vices are used to maintain compression during drilling and machining, then structural retention is improved, but device complexity and production time increase

Engineering Contradiction:
Improvestructural retentionVSAvoiddevice complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The drill press itself is modified to include compression application capability. The drilling tool integrates a compression mechanism that automatically applies transverse compression to the peelable stack during drilling operations, eliminating the need for separate flanges or vices. The system serves its own compression needs through the integrated mechanism.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The compression function and drilling function are merged into a single integrated tool. The drilling tool combines the drilling mechanism with a compression application system, allowing both functions to be performed simultaneously through one device rather than requiring separate compression devices and drilling devices.

Inventive Principle:
Principle #5Merging (Combining)

2Stability of the object's composition

If flanges or vices are installed for maintaining compression, then structural retention during machining is improved, but productivity decreases due to extensive installation time

Engineering Contradiction:
Improvestructural retentionVSAvoidproductivity
Core Design Contradiction:
Stability of the object's compositionVSProductivity

Solution Approach 1:

The drilling tool automatically applies compression during the drilling process without requiring separate setup steps. The compression is applied as part of the drilling operation itself, eliminating the time-consuming installation and removal of flanges or vices that would otherwise be required.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The compression is applied continuously during the entire drilling operation. The compression mechanism remains engaged throughout the drilling process, maintaining structural retention without interruption, and eliminates the need for separate compression setup and teardown steps that would interrupt production flow.

Inventive Principle:
Principle #20Continuity of useful action

3Productivity

If compression is applied using a drilling tool, then productivity increases by eliminating flange installation, but the complexity of the drilling tool increases

Engineering Contradiction:
ImproveproductivityVSAvoiddrilling tool complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The compression mechanism is integrated into the existing drilling tool structure. Rather than adding a completely separate system, the compression function is merged with the drilling mechanism, sharing common components such as the tool holder, positioning system, and control interface, thereby minimizing the increase in overall complexity.

Inventive Principle:
Principle #5Merging (Combining)

4Loss of time

If machining is performed on the raw peelable stack without separate compression devices, then production time is reduced, but maintaining structural retention becomes more difficult

Engineering Contradiction:
Improveproduction timeVSAvoidstructural retention
Core Design Contradiction:
Loss of timeVSStability of the object's composition

Solution Approach 1:

The drilling tool performs both compression application and drilling operations without requiring external assistance from separate compression devices. The tool independently maintains the necessary structural retention throughout the machining process, eliminating time losses associated with setting up and removing external compression equipment.

Inventive Principle:
Principle #25Self-service

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 approach reduces production costs and increases productivity by eliminating the need for extensive flange or vice installation, enabling faster drilling and machining directly on the raw peelable stack, thus enhancing workshop efficiency.

Implementation Method 1

stacking large sheets of the material, coated with an adhesive precursor, passing through an oven and/or under pressure to harden the adhesive

Methodology Applied
Scientific EffectAdhesive hardening: Adhesive

Implementation Method 2

a first compression is applied transversely to the sheets to promote structural retention on the edge of the hole during drilling

Methodology Applied
Scientific EffectMechanical compression: Compression

Data Source

PatentEP3056305B1Method for manufacturing a plurality of peelable shims
Publication Date: 2023.10.04 GASTEL YANN MAURICE
  • EP3056305B1 patent drawingFigure 1~2
  • EP3056305B1 patent drawingFigure 3
  • EP3056305B1 patent drawingFigure 4~6

AI summary

Method of manufacturing a plurality of peelable wedges, comprising drilling steps (E14), for each wedge of the plurality, of at least one through hole transverse to the sheets, while a first compression (C1) is applied transversely to the sheets to promote structural support on the limit of the hole during drilling, characterized in that the drilling steps (E14) are carried out using a drilling and compression tool (2000) on the raw peelable stack (300) and the first compression (C1) is applied using said tool (2000).