Autonomous Lawn Mower Blade Sharpening Robot for On-Site Maintenance

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Solution Overview

Problem

Existing methods for sharpening lawn mower blades are unsafe, inconvenient, and inefficient, requiring manual handling and disassembly, and existing attached sharpeners lack accuracy and safety features.

Innovation Solution

An autonomous lawn mower blade sharpening robot that operates under the mower, equipped with cameras, sensors, and task arms to sharpen, clean, and condition blades while attached, using object and spatial recognition for precise task execution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual blade removal and sharpening is performed, then blade sharpening can be completed, but safety risks increase and time consumption increases

Engineering Contradiction:
ImprovesafetyVSAvoidtime consumption
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system enables the lawn mower to service itself by equipping it with an autonomous robot that can detect, approach, and sharpen the blades while attached to the mower, eliminating the need for manual blade removal and reinstallation

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical operations with an autonomous robotic system equipped with sensors, cameras, and automated sharpening mechanisms that can operate independently without human intervention

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

2Ease of operation

If static hand sharpening devices are used while blades are attached, then blade sharpening can be performed on-site, but accuracy and safety are compromised

Engineering Contradiction:
Improveon-site sharpening convenienceVSAvoidsharpening accuracy
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The system transitions from static hand-held sharpening devices to a dynamic autonomous robot that can move precisely along the blade, adjust its position, and maintain optimal sharpening angles through automated control

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent incorporates sensors and cameras that provide real-time feedback to the control system, enabling the robot to detect blade position, monitor sharpening progress, and adjust its operations to maintain high precision

Inventive Principle:
Principle #23Feedback

3Manufacturing precision

If professional blade sharpening services are used, then sharpening quality can be maintained, but time and convenience are reduced

Engineering Contradiction:
Improvesharpening qualityVSAvoidservice time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The lawn mower system performs blade sharpening autonomously without requiring external professional services, eliminating the need to transport blades to external facilities and wait for service

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system enables continuous blade maintenance by performing sharpening operations immediately when needed, rather than requiring periodic removal and external servicing

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUS12349629B2Autonomous lawn mower blade sharpening and task robot
Publication Date: 2025.07.08 ORBISHARP ROBOTICS INC
  • US12349629B2 patent drawing
  • US12349629B2 patent drawing
  • US12349629B2 patent drawing

AI summary

A lawn mower blade sharpening and task robot that autonomously drives under a lawn mower including a body, at least one motor, and a microprocessor. The robot also includes at least one a camera for object recognition and visualization of at least one of the lawn mower, a lawn mower deck, a lawn mower blade, and a lawn mower blade cutting edge, and at least one a sensor to sense the lawn mower, the lawn mower deck, the lawn mower blade, and lawn mower cutting edge. The robot may also include at least one of a task tool, a task arm, a task tip, and a task element in order to complete tasks such as sharping lawn mower blades and cleaning lawn mower blades.