Universal Tool Holder for Hammer Drills
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hammer drills require multiple tool holders for different cutting tool designs, leading to increased costs and complexity, as integral tool holders cannot be easily swapped or adapted for different cutting tools.
Innovation Solution
A tool holder design that accommodates two different cutting tool designs, such as hex shank and SDS plus shank, using a mechanism with positioning and locking ball bearings and sleeves that adjust to securely hold and rotate the cutting tools, allowing for interchangeable use without the need for multiple hammer drills.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple tool holders are provided for different cutting tool designs, then different cutting tools can be used, but cost and device complexity increase
Solution Approach 1:
The tool holder is designed with a universal interface that can accommodate both hex shank and SDS plus cutting tools through a single mechanism. The holder includes a cylindrical bore with positioning elements (such as ribs or cam surfaces) that can engage with different shank types, allowing one tool holder to perform multiple functions and support various cutting tool designs without requiring separate specialized holders for each tool type.
2Stability of the object's composition
If integral tool holders are used in hammer drills, then structural stability is improved, but the ability to swap or adapt tool holders is lost
Solution Approach 1:
The tool holder mechanism is designed as a separable component that can be detached from the hammer drill body. The holder includes a mounting interface (such as a bayonet mount or screw-on connection) that allows it to be removed and replaced with another holder. This segmentation enables the tool holder to maintain structural integrity during operation while allowing interchangeability when needed to adapt to different cutting tool requirements.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A tool holder for a power tool comprising: a body (102) defining a passageway (114) in which a shank of a cutting tool can be located; at least one axial locking element (118) moveably mounted within the body and which is capable of being moved between and held in at least two positions, a first release position and a second locking position where it projects into the passageway (114) where it is capable of engagingly a shank of a cutting tool when located within the passageway in order to axially restrict the movement of the shank in the passageway; characterised in that there is further provided at least one axial guide (116) moveably mounted within the body (102) and which can be moved between and held in at least two positions wherein, in at least one position, it projects into the passageway (114) where it is capable of engagingly supporting a side of a shank of a cutting tool when located within the passageway (114).