Indexable Parting Blade Coolant Channel Layout for Deep Cutting
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Solution Overview
Problem
Indexable parting blades with multiple insert pockets face challenges in providing effective coolant supply due to space constraints and obstructed coolant channels, limiting their ability to achieve a large parting depth and efficient coolant distribution.
Innovation Solution
The design incorporates a nested coolant channel configuration with multiple outlets per insert pocket, sharp turns, and specific cross-sectional shapes to bypass obstructing channels and ensure effective coolant delivery, including a teardrop-shaped channel with straight edges for improved surface finish and structural strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a parting blade has multiple insert pockets arranged along the peripheral edge, then the blade can perform multiple cutting operations, but the coolant channels become obstructed and space constraints prevent effective coolant supply
Solution Approach 1:
The patent implements nested coolant channels where at least one coolant channel is positioned within another coolant channel. This nesting arrangement allows multiple coolant pathways to coexist in the limited blade thickness space without obstructing each other, enabling effective coolant delivery to multiple insert pockets while maintaining structural integrity of the blade
Solution Approach 2:
The patent utilizes the thickness dimension of the blade to arrange coolant channels at different depths. By positioning coolant channels at multiple levels within the blade thickness, the design creates three-dimensional coolant pathways that bypass obstructions caused by insert pockets and other channels, ensuring reliable coolant supply without increasing the blade's planar footprint
2Length of moving object
If the blade inlet aperture is located further from the insert pocket to allow greater depth of cut, then the parting depth increases, but the coolant channel path becomes longer and more complex
Solution Approach 1:
The nested coolant channel configuration allows the coolant to travel through concentric pathways, where inner channels can take more direct routes to distant insert pockets while outer channels handle coolant distribution to nearer pockets. This nesting reduces the overall complexity by organizing multiple channel paths in a structured, space-efficient manner
Solution Approach 2:
The coolant channel system is segmented into multiple independent pathways, with each channel serving specific insert pockets. This segmentation allows optimization of individual channel paths, where channels can be routed directly to their target pockets without interference, reducing overall path complexity despite increased depth of cut
Data Source
Figure 1A~1E
Figure 2A~2E
Figure 3A~5
AI summary
An indexable parting blade has opposite blade first and second sides, a blade peripheral edge, a central index axis, and at least first, second and third insert pockets located along the blade peripheral edge. The parting blade also has first, second and third coolant channels, each forming a coolant path from a corresponding inlet to a corresponding one of the insert pockets. Each coolant channel includes a rake outlet opening out to a rake side of its corresponding insert pocket and a relief outlet opening out to a relief side of that same insert pocket. The inlet corresponding to a given coolant channel is located further from that coolant channel's insert pocket than at least one of (a) the inlet corresponding to a different coolant channel, and (b) the central index axis.