Cutting Tool Holder Dovetail Engagement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cutting tool holding devices experience frequent damage and high maintenance costs due to inadequate engagement between the base and cutting tool holder, leading to a short tool lifetime and frequent replacements when working with solid and stiff materials like concrete or asphalt.
Innovation Solution
The cutting tool holding device incorporates a base with a transverse dovetail groove and a cutting tool holder with a detachable transverse dovetail portion, reinforced by a pressing member and fastening screws, ensuring stable engagement and enhanced load capacity to withstand reaction forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fastening members (screws) are used to engage the cutting tool holder with the base, then the device is simple to manufacture and assemble, but the engagement is insufficient to withstand reaction forces from solid materials, leading to frequent damage and high maintenance costs
Solution Approach 1:
The patent employs asymmetric dovetail grooves and corresponding protrusions with inclined surfaces that create a mechanically interlocked connection. The asymmetric geometry ensures that the cutting tool holder and base engage in a specific orientation, distributing reaction forces across the inclined surfaces rather than concentrating them at single screw points, thereby enhancing engagement strength without proportionally increasing complexity
Solution Approach 2:
The dovetail grooves and protrusions feature curved inclined surfaces rather than flat or angular contacts. These curved surfaces allow for smoother force distribution and reduce stress concentration points during engagement and operation, improving the overall reliability of the connection while maintaining a relatively simple structural form
2Duration of action of stationary object
If the base and cutting tool holder are firmly engaged to withstand reaction forces, then the lifespan of the cutting tool holding device is prolonged, but the manufacturing complexity and assembly difficulty increase
Solution Approach 1:
The cutting tool holder is divided into modular components that can be separately manufactured and then assembled using the dovetail engagement mechanism. This segmentation allows each component to be optimized for its specific function while maintaining ease of manufacture, and the standardized dovetail interfaces simplify the assembly process despite the enhanced engagement requirements
Solution Approach 2:
The dovetail groove and protrusion design serves multiple functions simultaneously: it provides mechanical engagement, positions the cutting tool holder relative to the base, and distributes reaction forces across multiple contact surfaces. This multi-functionality reduces the need for additional separate components, thereby maintaining manufacturing ease while achieving prolonged lifespan
3Productivity
If frequent replacement of cutting tools and holders is performed to maintain cutting efficiency, then the cutting performance is maintained, but the maintenance cost and downtime increase
Solution Approach 1:
The cutting tool holder is designed with dynamic engagement features that allow for quick attachment and detachment from the base through the dovetail mechanism. This enables rapid tool changes without requiring complex disassembly procedures, maintaining high cutting efficiency while minimizing the time lost during tool replacements and maintenance activities
Solution Approach 2:
The cutting tools and holders are pre-configured with standardized dovetail interfaces that match the base, allowing for preliminary preparation and staging of replacement tools. This preliminary configuration enables operators to quickly swap tools without on-site adjustment or complex alignment procedures, reducing maintenance downtime while preserving cutting efficiency
Data Source
AI summary
A cutting tool holding device includes a base, a cutting tool holder and a fastening member. The base includes an abutting portion and a transverse dovetail groove, wherein the abutting portion is defined between a first wall with a mounting surface and a second wall, and the transverse dovetail groove is formed on the mounting surface. The cutting tool holder has a transverse dovetail portion, wherein the cutting tool holder is abutted against the abutting portion, and the transverse dovetail portion is detachably engaged into the transverse dovetail groove on the mounting surface of the second wall. The fastening member is for fastening the cutting tool holder to the base.