Lead Component Release Height for Pre-Loaded Board Clearance

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Solution Overview

Problem

The challenge is to prevent interference between a held component and a pre-loaded component on a board when mounting the held component, as existing technologies do not effectively calculate the release position to avoid such interference.

Innovation Solution

A calculation device for a work machine is developed, which includes a holding tool and a moving device to calculate the release position of the held component, determining the height at which the held component is released by the holding tool to insert the lead into a board hole without interfering with pre-loaded components, based on the dimensions of the pre-loaded component, the lead, and the holding tool.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the holding tool holds the held component at a low position to insert the lead into the hole, then the lead can be inserted into the hole, but the body of the held component interferes with the pre-loaded component

Engineering Contradiction:
Improvelead insertion accuracyVSAvoidinterference with pre-loaded component
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a vertical height dimension (Z-axis) to resolve the horizontal interference problem. By calculating and adjusting the release height of the held component, the body is positioned at a sufficient height above the pre-loaded component, allowing the lead to be inserted into the hole without the body interfering with the pre-loaded component.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent performs preliminary calculation of the release height before the actual insertion operation. The calculation device computes the required height based on the dimensions of the pre-loaded component, the held component, and the holding tool, ensuring that when the held component is released, it is already at the correct height to avoid interference during insertion.

Inventive Principle:
Principle #10Preliminary action

2Object-affected harmful factors

If the holding tool releases the held component at a high position to avoid interference with pre-loaded component, then interference is prevented, but the lead cannot be inserted into the hole

Engineering Contradiction:
Improveinterference with pre-loaded componentVSAvoidlead insertion accuracy
Core Design Contradiction:
Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The patent uses the vertical dimension to decouple the two requirements: the release height is set high enough to prevent horizontal interference with the pre-loaded component, while the lead length is sufficient to reach from this elevated position down into the hole, thus satisfying both conditions simultaneously.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of operation

If the held component is mounted directly without calculating release height, then the mounting process is simple, but interference with pre-loaded component occurs

Engineering Contradiction:
Improvemounting process simplicityVSAvoidinterference with pre-loaded component
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a calculation device as an intermediary between the design parameters and the mounting operation. This device automatically computes the precise release height based on component and tool dimensions, eliminating the need for manual judgment or trial-and-error while preventing interference.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The calculation of release height is performed in advance before the actual mounting operation, allowing the system to plan the precise release position that avoids interference, thus making the subsequent mounting operation straightforward and interference-free.

Inventive Principle:
Principle #10Preliminary action

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

The solution prevents interference by calculating the release height for the held component, allowing it to be released and inserted into the board hole without contacting pre-loaded components, ensuring accurate mounting and avoiding interference.

Implementation Method 1

the held component descends on its own weight or the like in a state of the body of the held component being separated from the board

Methodology Applied
Scientific EffectWeight: Gravitation

Data Source

PatentEP3713386B1Calculation device
Publication Date: 2023.03.22 FUJI CORP
  • EP3713386B1 patent drawingFigure 1
  • EP3713386B1 patent drawingFigure 2
  • EP3713386B1 patent drawingFigure 3

AI summary

There is disclosed a calculation device for a work machine comprising a holding head including a holding tool configured to hold a lead component comprising a lead and a body and a moving device configured to move the holding head, the calculation device calculating a release position of the lead component held by the holding tool, when the work machine mounts the lead component on a board by inserting the lead of the lead component held by the holding tool into a hole formed on the board by operating the moving device, in which the calculation device is configured to calculate, when a held component constituting the lead component held by the holding tool is mounted on the board, a height to the held component as a release height at which the held component is released by the holding tool, the height to the held component being the height allowing the lead to be inserted into the hole without interference of the body of the held component and a pre-loaded component already mounted on the board, the calculation being performed based on a dimension of the pre-loaded component, a dimension of the lead of the held component, and a dimension of the holding tool