Rotary Tool Holder Assembly for Precise Modular Adjustment

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Solution Overview

Problem

Existing rotary tool assemblies suffer from limitations in precision adjustment, rigidity, compactness, versatility, and are prone to wear, leading to inconsistent production quality and increased manual intervention, safety risks, and high production costs.

Innovation Solution

An adjustable rotary tool assembly with a modular design featuring adjustable tool pairs, a rigid and compact structure, remote programming control, and a system that separates the wear-prone parts from the adjustment mechanism, allowing for precise and continuous operation with reduced manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If adjustable tool pairs are used in rotary tool assembly, then versatility of use is improved, but precision in adjustment deteriorates

Engineering Contradiction:
Improveversatility of useVSAvoidprecision in adjustment
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The tool assembly is segmented into multiple independent tool pairs, each with its own adjustment mechanism. This allows each pair to be adjusted independently while maintaining overall system versatility, resolving the contradiction by dividing the adjustment function across multiple modular units.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent replaces manual mechanical adjustment with automated control systems that use sensors and actuators to precisely position tools. This substitution eliminates human error in adjustment while maintaining the ability to configure multiple tool pairs for different applications.

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

2Adaptability or versatility

If adjustable tool pairs are used in rotary tool assembly, then versatility of use is improved, but rigidity deteriorates

Engineering Contradiction:
Improveversatility of useVSAvoidrigidity
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The assembly incorporates dynamically adjustable components that can be locked into fixed positions once adjusted. During operation, the tools maintain rigid fixed positions, while the ability to reconfigure between different tool pairs provides versatility. This dynamic locking mechanism resolves the contradiction between rigidity during use and adjustability for versatility.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If adjustable tool pairs are used in rotary tool assembly, then versatility of use is improved, but compactness deteriorates

Engineering Contradiction:
Improveversatility of useVSAvoidcompactness
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The tool pairs are arranged in a nested or concentric configuration where multiple tools share common mounting structures and rotational axes. This nesting allows multiple tool pairs to be accommodated in a compact volume while maintaining the ability to adjust and use each pair independently, resolving the contradiction between compactness and versatility.

Inventive Principle:
Principle #7Nested doll (Nesting)

4Productivity

If adjustable tool pairs are used in rotary tool assembly, then productivity is improved, but device complexity deteriorates

Engineering Contradiction:
Improveproduction efficiencyVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The assembly uses universal mounting interfaces and standardized adjustment mechanisms that can accommodate different tool types. This universality reduces the number of unique components needed, simplifying the overall device complexity while maintaining the ability to perform multiple operations with different tool pairs, thus improving productivity without proportionally increasing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4228870B1Rotary tool assembly
Publication Date: 2025.12.10 EIMA SRL
  • EP4228870B1 patent drawingFigure 1
  • EP4228870B1 patent drawingFigure 2
  • EP4228870B1 patent drawingFigure 3~4

AI summary

A rotary tool assembly is described comprising a tool arrangement with two ring-shaped tool holders, two tool bodies each fixed to a respective tool holder, two adjusting screws each coupled to two threaded bushings in opposite directions each fixed to a respective tool holder, two transmission shafts each configured to drive a rotation of a respective adjusting screw, and a crown arrangement configured to transmit motion from a motor arrangement to the transmission shafts, said crown arrangement comprising a ring and a rotatably ring gear coupled to the ring and arranged to receive motion from the motor arrangement and to transfer motion to both transmission shafts.