Grooving Tool Holder Rake Face for Lower Cutting Heat
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Solution Overview
Problem
Existing grooving tool holders experience issues with friction and heat generation during cutting, leading to potential deformation and failure unless high coolant pressure is applied.
Innovation Solution
A grooving tool holder design featuring a pivotable upper portion with a rake face and a cutting insert receptacle, where the rake face is shaped to direct cut material laterally away from the tool holder, reducing friction and heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional grooving tool holder design is used, then the cutting operation can be performed, but excessive heat is generated due to friction between the cut material and the tool holder, leading to deformation and tool holder failure
Solution Approach 1:
The rake face is formed with a curved surface that directs cut material laterally away from the tool holder. This curvature changes the flow path of the cut material, reducing contact area and friction between the material and the rake face, thereby reducing heat generation and improving tool holder reliability
Solution Approach 2:
The angle of the curved rake face is optimized to balance between directing material away from the tool holder and maintaining effective cutting. By adjusting the rake face angle parameter, the design achieves reduced heat generation while preserving cutting effectiveness
2Temperature
If high coolant pressure is applied to reduce heat, then heat generation is reduced, but the system complexity and operational requirements increase
Solution Approach 1:
The design converts the harmful frictional contact between cut material and the rake face into a beneficial lateral flow path. The curved rake face geometry naturally directs material away from the tool holder, transforming what was previously a source of heat generation into an efficient material ejection mechanism that reduces or eliminates the need for high-pressure coolant systems
3Device complexity
If the rake face is positioned perpendicular to the sidewalls, then the structure is simpler, but material flows along the rake face causing increased friction and heat
Solution Approach 1:
The rake face transitions from a perpendicular flat surface to a curved surface that angles laterally. This curvature guides the cut material away from the tool holder body, reducing the contact area and friction between material and tool holder, thereby reducing heat generation while maintaining structural integrity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design reduces friction and heat generation, leading to a longer tool holder life and improved efficiency with reduced coolant pressure requirements during cutting.
Implementation Method 1
Existing grooving tool holders often experience issues with the friction produced between the material cut by the grooving tool holder and the grooving tool holder. This friction may generate excessive heat resulting in deformation of the grooving tool holder.
Data Source
AI summary
A grooving tool holder includes a lower portion, an upper portion, and a cutting insert receptacle. The upper portion is pivotable relative to the lower portion. The upper portion includes a rake face. The cutting insert receptacle is disposed between the lower portion and the upper portion. The cutting insert receptacle includes an upper clamping jaw disposed in the upper portion and a lower clamping jaw disposed in the lower portion. The cutting insert receptacle extends widthwise between opposed sidewalls of the lower portion and opposed sidewalls of the upper portion. The rake face is disposed adjacent to and over the cutting insert receptacle. The rake face extends between the opposed sidewalls of the upper portion. The rake face is disposed non-perpendicularly to the opposed sidewalls of the upper portion.