Work Machine Teaching Point Adjustment for Automatic Slewing

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Solution Overview

Problem

Existing work machines require manual reteaching when the position or shape of the work subject differs from the taught position, reducing work efficiency due to the need for operator input.

Innovation Solution

An operation instruction system that includes a mobile terminal and a work machine with sensors and control units to generate and change teaching point information, allowing automatic operation of the slewing device and attachment based on detected slewing and orientation angles, enabling efficient adjustment of teaching points without manual input.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual reteaching is performed when work subject position or shape differs from taught position, then operation accuracy is maintained, but work efficiency decreases due to operator input requirements

Engineering Contradiction:
Improveoperation accuracyVSAvoidwork efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The system automatically detects the work subject's position and shape using sensors, and self-adjusts the teaching point information without requiring operator intervention. The work machine performs the reteaching function itself by comparing detected data with stored teaching data and automatically updating operation instructions.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual operator input with automated sensor-based detection and processing systems. Optical sensors, cameras, or other detection devices capture work subject characteristics, and a control system processes this data to automatically adjust teaching points, substituting the mechanical/manual process with an automated information processing system.

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

2Loss of time

If numerical value changing technique is used for small differences, then reteaching time is reduced, but operator input is still required which reduces work efficiency

Engineering Contradiction:
Improvereteaching timeVSAvoidwork efficiency
Core Design Contradiction:
Loss of timeVSProductivity

Solution Approach 1:

The system automatically performs the numerical value adjustment function that previously required operator input. The control system detects work subject variations, calculates necessary adjustments to teaching point information, and implements changes automatically without operator intervention, making the system self-sufficient for adaptation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent automatically changes the parameters of teaching point information based on detected work subject characteristics. The system modifies position coordinates, orientation angles, or other operational parameters by comparing detected data with stored teaching data, and applies these parameter changes automatically to update operation instructions.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If automatic operation is implemented, then work efficiency improves, but adaptability to different work subjects decreases without manual intervention

Engineering Contradiction:
Improvework efficiencyVSAvoidadaptability to different work subjects
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The system incorporates feedback loops where sensors continuously detect work subject characteristics, the control system processes this information, and automatically adjusts teaching point parameters accordingly. This closed-loop feedback mechanism enables the automatic operation system to adapt to different work subjects by using detected information to refine and update operation instructions in real-time.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent transforms the static teaching point information into a dynamic system that can automatically adapt to varying work conditions. The teaching point data is no longer fixed but is continuously updated based on detected work subject characteristics, allowing the automatic operation system to maintain both efficiency and adaptability through dynamic parameter adjustment.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12371882B2Operation instruction system
Publication Date: 2025.07.29 KOBELCO CONSTR MASCH CO LTD
  • US12371882B2 patent drawing
  • US12371882B2 patent drawing
  • US12371882B2 patent drawing

AI summary

A point generating unit of a mobile terminal generates teaching point information associating a teaching position that teaches the work machine a position of the attachment in a series of movements to be performed by the work machine with orientation information indicating a target orientation at the teaching position, based on a slewing angle of an upper slewing body and on orientation information on the attachment. A point changing unit changes the generated teaching point information. When the teaching point information is changed, an instruction generating unit of the work machine generates an automatic operation instruction for automatically operating a slewing device and the attachment, based on the changed teaching point information. An operation control unit of the work machine automatically operates the slewing device and the attachment, based on the automatic operation instruction.