Camera-Based Tool Positioning for Wood Machining Setup

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Solution Overview

Problem

The existing methods for adjusting machining units in machines processing wood or wood substitute materials are time-consuming, requiring precise adjustments for precise fits between workpieces, which limits the operational efficiency and productivity of these machines.

Innovation Solution

A method utilizing a camera to record and transmit the position of the cutting tool to a viewing device, allowing for precise adjustments based on the cross-section images, significantly reducing the time needed for setup and enabling minor corrections, thereby increasing machine availability and productivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional test run adjustments are used for each processing unit, then precise fit between workpieces is achieved, but adjustment time increases significantly

Engineering Contradiction:
Improveprecision of fit between workpiecesVSAvoidadjustment time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent applies preliminary action by providing templates that show the final desired cross-section configuration before actual machining begins. Operators can pre-plan and visualize the required tool positions and cutting paths, allowing them to make adjustments more efficiently without needing multiple test runs. The templates serve as advance guides that reduce the iterative adjustment process.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces the traditional mechanical trial-and-error adjustment process with a visual information system. Instead of relying on physical test runs and manual measurements, the invention uses templates displaying cross-section configurations to guide tool positioning. This substitution of mechanical experimentation with visual planning significantly reduces adjustment time while maintaining precision.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Manufacturing precision

If multiple processing units are used to achieve complex cross sections, then workpiece precision is improved, but machine complexity increases

Engineering Contradiction:
Improvecross section precisionVSAvoidnumber of processing units
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the complex cross-section configuration into multiple templates, each representing a specific processing unit's contribution. Instead of viewing the entire complex configuration at once, operators can work with individual templates for each processing unit, making the overall complex task more manageable and reducing the cognitive load associated with machine complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces templates as intermediary visual aids between the operator and the complex multi-unit processing system. These templates serve as mediators that translate the complex requirements of multiple processing units into simple, actionable visual guides. This intermediary layer simplifies the interaction with the complex system without reducing the system's capability to produce precise cross-sections.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP1930120B1Method for setting processing units each with a chipping tool
Publication Date: 2009.10.21 PREWI SCHNEIDWERKZEUGE GMBH
  • EP1930120B1 patent drawingFigure 1

AI summary

The method involves continuously transporting work pieces in a through feed method by processing units (10), which are arranged in a row. A corresponding position of a chipping tool (11) of processing units, which can be adjusted is recording using a digital camera (13), and is visually transferred to a notebook (15). The notebook reproduces a cross section of the work piece in a final condition, in such a manner that the notebook is used as a setting jig for positioning of the chipping tool. An independent claim is also included for a machine for implementing a method for adjusting processing units of the machine.