Movable Tool Holder Layout for Flexible Machine Tool Exchange

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Solution Overview

Problem

Existing machine tools with tool magazines have limited flexibility and complexity in tool change procedures, inadequate load capacity for different tool types, and restricted movement of mobile components due to traditional tool magazine configurations.

Innovation Solution

A machine tool design featuring two movable tool holder devices that allow for the loading of different tool types with high load capacity, without hindering the movement of machine parts, utilizing a system where one device translates and rotates to occupy the same position as the other in a plane defined by specific axes, enabling efficient tool exchange.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional tool magazine configurations are used, then the structure is simple and fixed, but the flexibility in tool change procedures is low and the movement of mobile components is restricted

Engineering Contradiction:
Improveflexibility in tool change proceduresVSAvoidcomplexity of tool change procedures
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic tool holder devices that can move between resting and operative positions, allowing the system to adapt its configuration based on operational needs. The first and second tool holders are designed to be movable relative to the operative means, enabling flexible tool change procedures while maintaining a relatively simple overall structure when in resting position.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The tool changing system is divided into separate functional modules: a first tool holder device, a second tool holder device, and an operative means. Each segment can operate independently, with the first and second tool holders being movable relative to the operative means. This segmentation allows for simplified individual components while achieving high flexibility through their coordinated movement and interaction.

Inventive Principle:
Principle #1Segmentation

2Quantity of substance

If traditional tool magazine configurations are used, then the device structure is compact, but the load capacity for different tool types is insufficient

Engineering Contradiction:
Improveload capacity of toolsVSAvoidoverall size of tool holder devices
Core Design Contradiction:
Quantity of substanceVSVolume of moving object

Solution Approach 1:

The patent utilizes vertical stacking arrangement where the first and second tool holder devices are positioned above each other in the resting position. This three-dimensional configuration allows the system to accommodate multiple tool types with high load capacity while maintaining a compact footprint. The tool holders can move horizontally to operative positions for tool exchange, effectively using vertical space to increase capacity without proportionally increasing overall volume.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Length of moving object

If traditional tool magazine configurations are used, then the position is fixed, but the movement of mobile components is hindered

Engineering Contradiction:
Improvemovement range of operating headVSAvoidspace occupied by tool holder devices
Core Design Contradiction:
Length of moving objectVSArea of stationary object

Solution Approach 1:

The tool holder devices are designed to be movable rather than fixed, transitioning between resting positions (above each other) and operative positions (at predetermined distances from operative means). This dynamic configuration allows the operating head and other mobile components to move freely through the workspace without obstruction, as the tool holders can retract to compact resting positions when not in use.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3741531B1Machine tool with movable tool holder devices
Publication Date: 2024.02.14 SCM GRP
  • EP3741531B1 patent drawingFigure 1
  • EP3741531B1 patent drawingFigure 2~3
  • EP3741531B1 patent drawingFigure 4~5

AI summary

The present invention relates to a machine tool (1) for machining workpieces, comprising: ase (2) for supporting, in use, at least one workpiece to be machined; a supporting structure (3) which is movable above said base (2) along a first axis (X), and which substantially extends along a second axis (Y); operative means (4, 5; 104) which are associated with said supporting structure (3) and movable relative to said supporting structure (3) along said second axis (Y) and along a third axis (Z), which is orthogonal to said first axis (X) and said second axis (Y), said operative means (4, 5; 104) being configured to receive, in use, at least one tool (U, L) for machining said at least one workpiece; a first device (6, 105) for carrying at least one tool (U), said first device (6, 105) being relatively movable relative to said operative means (4, 5; 104) between a respective resting position, where said first device (6, 105) is at a predetermined distance from said operative means (4, 5; 104), and a respective operative position, where said first device (6, 105) is placed in such a way as to allow the exchanging of at least one tool (U) between said first device (6, 105) and said operative means (4, 5; 104); and a second device (13, 103) for carrying at least one tool (L), said second device (13, 103) being movable relative to said supporting structure (3) between a respective resting position, where said second device (13, 103) is at a predetermined distance from said operative means (4, 5; 104), and a respective operative position, where said second device (13, 103) is placed in such a way as to allow the exchanging of at least one tool (L) between said second device (13, 103) and said operative means (4, 5; 104); wherein said first device (6, 105) in the respective resting position and said second device (13, 103) in the respective resting position are above each other.