Impact Rotary Tool Attachment for Multi-Axis Machining

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Solution Overview

Problem

There is a growing demand for an impact rotary tool attachment that allows users to perform various types of machining work more easily and conveniently using an impact rotary tool.

Innovation Solution

A tool system comprising an impact rotary tool attachment with a driving force conversion mechanism that translates the rotational axis of the rotational driving force, allowing the attachment to be used with various machining tasks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a standard impact rotary tool is used, then the tool structure remains simple and easy to operate, but the tool cannot perform various types of machining work that require different rotational axis orientations

Engineering Contradiction:
Improvemachining capabilityVSAvoidtool structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The attachment device enables a single impact rotary tool to perform multiple machining operations by providing different output shaft orientations (horizontal, vertical, angled) through interchangeable attachment units, making the tool system universal for various machining tasks

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

Solution Approach 2:

The attachment device is designed to be mounted on the output shaft of the impact rotary tool, with the input shaft receiving the tool's output and the output shaft providing the transformed rotational force, creating a nested configuration where the attachment unit integrates with the existing tool structure

Inventive Principle:
Principle #7Nested doll (Nesting)

2Adaptability or versatility

If an attachment device with driving force conversion mechanism is added, then the tool can perform machining tasks with different rotational axis orientations, but the device complexity increases

Engineering Contradiction:
Improvemachining task capabilityVSAvoidattachment structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The input shaft acts as an intermediary component that receives rotational driving force from the impact rotary tool's output shaft and transmits it to the output shaft, enabling the conversion of rotational axis orientation while maintaining a relatively simple mechanical structure

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The attachment device changes the dimensional orientation of the rotational axis by providing output shafts in different spatial orientations (horizontal, vertical, angled) relative to the input shaft, enabling machining operations in multiple directions without complex mechanisms

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

Data Source

PatentEP3978193B1Attachment for impact rotary tools and tool system
Publication Date: 2025.03.05 PANASONIC HOLDINGS CORP
  • EP3978193B1 patent drawingFigure 1
  • EP3978193B1 patent drawingFigure 2
  • EP3978193B1 patent drawingFigure 3

AI summary

The problem to be overcome by the present disclosure is to provide an impact rotary tool attachment and tool system, both of which are designed to allow the user to have various types of machining work done more easily. An impact rotary tool attachment (7; 7a; 7b; 7c) according to the present disclosure includes an input shaft (71), a second output shaft (73), and a driving force conversion mechanism (9; 9a; 9b). To the input shaft (71), rotational driving force is transmitted from a first output shaft (450) of an impact rotary tool (1). To the second output shaft (73), the rotational driving force is transmitted from the input shaft (71). The driving force conversion mechanism (9; 9a; 9b) performs, when the rotational driving force is transmitted from the input shaft (71) to the second output shaft (73), at least one of: translating a rotational axis of rotation produced by the rotational driving force; changing an angle defined by the rotational axis; and converting the rotational driving force into thrust driving force applied along the rotational axis.