Cutting Tool Orientation Sensing for Faster Mounting Setup

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Solution Overview

Problem

Existing cutting tools require complicated and time-consuming processes to establish proper orientation, often necessitating manual adjustment with external sensors like spirit levels, which can be cumbersome and skill-dependent.

Innovation Solution

Integration of sensors, such as accelerometers, within the tool bar of a cutting tool to estimate its rotational orientation relative to the axis, eliminating the need for external sensors and simplifying the mounting process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If external sensors like spirit levels are used to check cutting tool orientation, then orientation measurement capability is provided, but device complexity and ease of operation deteriorate due to manual placement and adjustment requirements

Engineering Contradiction:
Improveorientation measurement capabilityVSAvoidcomplexity of orientation establishment process
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines the cutting tool with integrated sensors (accelerometers, gyroscopes, or magnetometers) directly mounted on the tool bar, merging the measurement function into the tool itself. This eliminates the need for separate external spirit levels and manual placement procedures, thereby reducing device complexity while maintaining orientation measurement capability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The cutting tool becomes self-sufficient for orientation measurement through integrated sensors that automatically provide orientation data without requiring external assistance. The tool serves its own measurement needs, eliminating the need for operators to manually place and read external spirit levels, thus improving ease of operation.

Inventive Principle:
Principle #25Self-service

2Measurement precision

If external sensors like spirit levels are used to check cutting tool orientation, then orientation measurement capability is provided, but loss of time increases due to manual adjustment and reading procedures

Engineering Contradiction:
Improveorientation measurement capabilityVSAvoidtime required for orientation establishment
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces mechanical spirit levels with electronic sensors (accelerometers, gyroscopes, or magnetometers) that provide digital orientation data. This substitution eliminates manual placement, adjustment, and reading procedures, significantly reducing the time required for orientation establishment while maintaining or improving measurement precision.

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

Solution Approach 2:

The integrated sensors provide real-time orientation feedback to the operator through displays or interfaces on the cutting tool itself. This immediate feedback eliminates the time delay associated with manual spirit level reading and adjustment, allowing operators to quickly determine and correct orientation as needed.

Inventive Principle:
Principle #23Feedback

3Measurement precision

If manual adjustment with external spirit levels is used, then orientation checking is possible, but ease of operation worsens due to skill-dependent procedures

Engineering Contradiction:
Improveorientation measurement capabilityVSAvoidease of cutting tool mounting
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces skill-dependent manual spirit level procedures with electronic sensors and digital displays that automatically calculate and present orientation information. This substitution removes the need for operator skill in manually placing and reading spirit levels, making the orientation process easier and more accessible to operators of all skill levels.

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

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

Facilitates easy and accurate orientation of the cutting tool, reducing the complexity and time required for setup, and ensuring precise machining by providing real-time orientation feedback.

Implementation Method 1

The at least one sensor comprises accelerometers arranged to measure acceleration in at least two directions

Methodology Applied
Scientific EffectAccelerometer: Accelerometer

Data Source

PatentEP3292929B2Estimation of orientation of a cutting tool
Publication Date: 2025.07.02 SANDVIK INTELLECTUAL PROPERTY AB
  • EP3292929B2 patent drawingFigure 1
  • EP3292929B2 patent drawingFigure 2
  • EP3292929B2 patent drawingFigure 3~4

AI summary

A cutting tool (100), a turning machine (200) comprising the cutting tool, and an associated method (400) are provided. The cutting tool comprises a tool bar (110) extending along an axis (111), a cutting head (120) located at the tool bar, and at least one sensor (130) integrated with the tool bar or the cutting head. A rotational orientation of the cutting tool with respect to the axis is estimated based on output provided by the at least one sensor. In at least some embodiments, the at least one sensor comprises accelerometers configured to measure acceleration in at least two directions (131, 132).