Inclined Dual-Edge Turning Tool for Linear Indexing

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Solution Overview

Problem

Conventional turning tools on CNC-lathes require time-consuming turret rotation for indexing, leading to downtime and inefficiency in machining complex shapes.

Innovation Solution

A turning tool design featuring intersecting cutting elements with an inclination angle, allowing for quick indexing through linear motion, compatible with a wide range of CNC-lathes, and reducing downtime by enabling efficient machining of complex shapes without the need for turret rotation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If turret rotation is used for indexing between turning tools, then multiple cutting operations can be performed, but down-time increases and productivity decreases

Engineering Contradiction:

Improveability to perform multiple cutting operationsVSAvoiddown-time during tool indexing

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent combines multiple cutting elements (first and second cutting elements with different orientations) onto a single turning tool body, allowing both cutting operations to be performed without turret rotation. The tool includes a first cutting element for machining in one direction and a second cutting element for machining in a different direction, both accessible through linear motion only.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Instead of rotating the turret to switch between cutting tools, the patent inverts the approach by having multiple cutting elements on one tool that can be accessed through linear motion. The tool is designed with cutting elements oriented at different angles (e.g., 0 degrees and 45 degrees) that can be brought into position by linear movement rather than rotation.

Inventive Principle:

Principle #13The other way round (Inversion)

2Adaptability or versatility

If multiple turning tools with different geometries are used, then complex shapes can be machined, but tool change time increases

Engineering Contradiction:

Improveability to machine complex shapesVSAvoidtool change and indexing time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent merges multiple cutting elements with different geometries and orientations into a single turning tool. The tool includes a first cutting element with a first geometry for machining in one direction and a second cutting element with a second geometry for machining in a different direction, eliminating the need for multiple tool changes.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The turning tool is designed as a multi-functional tool that can perform multiple cutting operations in different directions and orientations. The single tool can machine complex shapes by utilizing both the first cutting element and second cutting element through linear motion, making it universal for various turning operations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Productivity

If conventional turning tools are used, then simple shapes can be machined efficiently, but complex shapes require multiple tools and increase downtime

Engineering Contradiction:

Improvemachining efficiency for simple shapesVSAvoidability to machine complex shapes

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent combines multiple cutting elements capable of different cutting operations into a single turning tool. The tool includes a first cutting element for machining in one direction and a second cutting element for machining in a different direction, allowing complex shapes to be machined without sacrificing the efficiency gained from using specialized tools.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The turning tool is designed as a multi-functional tool that maintains high productivity for simple shapes while also being capable of machining complex shapes. The tool can efficiently perform standard turning operations with the first cutting element and switch to the second cutting element for complex geometry machining, all through linear motion.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4015119A1A metal cutting turning tool

Publication Date: 2022.06.22 SANDVIK COROMANT

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AI summary

A turning tool (1) comprising a coupling portion (3), wherein the coupling portion (3) extends along a coupling axis (A2), the coupling axis (A2) defines a longitudinal axis of the turning tool (1), wherein the turning tool (1) comprises a first cutting element (7) and a second cutting element (8), wherein the first cutting element (7) comprises a first cutting edge (5); wherein the second cutting element (8) comprises a second nose cutting edge (6) which separates and connects a second forward cutting edge (13) and a second rearward cutting edge (15); wherein the first cutting element (7) comprises a first top surface (20), wherein the second cutting element (8) comprises a second top surface (21), wherein the first and second cutting elements (7, 8) intersect an imaginary circle or cylinder (C1) having a center axis (A3) thereof parallel to or coinciding with the coupling axis (A2), wherein the first cutting element (7) is inclined in relation to the second cutting element (8) by an inclination angle (ω), wherein said inclination angle (ω) is measured around the center axis (A3) of the imaginary circle (C1), wherein the first top surface (20) is facing in a direction which is perpendicular to or substantially perpendicular to the coupling axis (A2).