BTA Cutting Tip Recess Geometry for Chip-Free Discharge Flow
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Solution Overview
Problem
The tip of a BTA cutting tool, positioned near the entrance of the discharge hole, narrows the entrance and can cause chip clogging due to fluid flow restrictions, leading to potential clogging issues during machining.
Innovation Solution
A tip with a recessed part on its second surface, closer to the trailing end, increases the cross-sectional area of the fluid flow path, preventing the narrowing of the discharge hole entrance and ensuring smooth fluid guidance, thereby preventing chip clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the tip is positioned near the entrance of the discharge hole, then the tip can be effectively located for cutting, but the entrance of the discharge hole is narrowed making it difficult for fluid containing chips to flow in
Solution Approach 1:
The invention introduces a recessed part on the second surface of the tip, creating a three-dimensional flow path that allows fluid to bypass the tip's obstruction. This dimensional modification enables fluid to flow along the recessed surface rather than being blocked by the tip's proximity to the discharge hole entrance.
Solution Approach 2:
The recessed part acts as an intermediary flow channel between the cutting edge area and the discharge hole entrance. It provides a dedicated fluid passage that mediates the conflict between tip positioning and fluid flow, allowing both functions to coexist without interference.
2Device complexity
If the tip is positioned near the entrance of the discharge hole, then the tip structure is compact, but chips can cause the entrance of the discharge hole to become clogged
Solution Approach 1:
The recessed part serves as an intermediary channel that separates chip discharge from the discharge hole entrance. Chips are guided through the recessed part's flow path, preventing them from directly contacting and clogging the discharge hole entrance while maintaining structural compactness.
Solution Approach 2:
The invention segments the fluid flow path into two distinct zones: the recessed part flow path for chip-laden fluid and the discharge hole for clean fluid discharge. This segmentation prevents chip accumulation at the discharge hole entrance while maintaining overall structural compactness.
3Productivity
If the second surface is formed with a recessed part receding toward the first surface, then the cross-sectional area of the flow path is increased, but the tip geometry becomes more complex
Solution Approach 1:
The recessed part is localized to a specific region on the second surface of the tip, rather than modifying the entire tip structure. This local modification increases the flow path cross-sectional area where needed while minimizing the overall geometric complexity of the tip.
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 recessed part design enhances fluid flow into the discharge hole, preventing chip clogging and ensuring continuous coolant flow, maintaining machining efficiency by avoiding stagnation and clogging.
Implementation Method 1
the cross-sectional area of the flow path for a fluid containing chips to flow through is increased by the recessed part
Data Source
AI summary
A tip that is capable of preventing chip clogging during machining, and a cutting tool equipped with this tip, are provided. The tip 30 includes a first surface 310 that is a portion making contact with a body 20 of the cutting tool 10 when the tip is attached to the body 20, a second surface 320 located on the opposite side from the first surface 310, a leading end part 330 connecting the first surface 310 and the second surface 320 and provided with a cutting edge 331, and a trailing end part 340 located on the opposite side from the leading end part 330. The second surface 320 is formed with a recessed part 321 receding toward the first surface 310 in a portion closer to the trailing end part 340.