Cutting Tip Recess Structure for BTA Chip Discharge
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Solution Overview
Problem
The tip of a BTA cutting tool, positioned near the entrance of the discharge hole, can narrow the entrance and 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 into the discharge hole, thereby preventing chip clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the tip is positioned near the entrance of the discharge hole, then the cutting edge can effectively remove chips, but the tip narrows the discharge hole entrance and causes chip clogging
Solution Approach 1:
The invention introduces a new spatial dimension by forming a recessed part on the second surface of the tip, creating a stepped structure that adds depth to the tip geometry. This dimensional change allows the tip to maintain its cutting effectiveness at the leading end while providing additional space at the trailing end to prevent narrowing of the discharge hole entrance, thereby resolving the contradiction between chip removal efficiency and discharge hole clogging
Solution Approach 2:
The tip is segmented into distinct functional zones: the leading end part with the cutting edge for chip removal, and the recessed part at the trailing end for maintaining discharge hole patency. This segmentation allows each part to perform its specific function optimally without interfering with the other, enabling effective chip removal while preventing discharge hole narrowing
2Productivity
If the tip is positioned near the entrance of the discharge hole, then the cutting edge can effectively remove chips, but the fluid flow path is restricted
Solution Approach 1:
By adding the recessed part as an additional spatial dimension on the tip structure, the invention creates a stepped configuration that separates the cutting function from the fluid flow function. This allows fluid to flow freely through the discharge hole without being blocked by the tip, while still maintaining effective chip removal at the cutting edge
Solution Approach 2:
The recessed part acts as an intermediary structure between the tip and the discharge hole. It provides a transition zone that mediates between the need for effective cutting (requiring tip proximity to discharge hole) and the need for free fluid flow (requiring unobstructed discharge hole entrance), allowing both requirements to be satisfied simultaneously
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, preventing chip clogging by maintaining a wide flow path and ensuring continuous, uninterrupted coolant and chip discharge, thus improving machining efficiency.
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. The tip does not narrow the entrance of the discharge hole and allows a portion of the fluid to be guided smoothly to the discharge hole via the recessed part
Data Source
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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.