Coolant-Fed Turning Tool Layout for Interference-Free Mounting
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Solution Overview
Problem
Existing turning tools with protruded portions in the Y-axis direction can interfere with adjacent tools when mounted on a comb type tool rest, and may damage workpieces during machining, while tools with non-linear coolant discharge ports may not supply sufficient coolant effectively.
Innovation Solution
A turning tool design featuring a replaceable cutting insert with mirror-image symmetry and a tool body that secures the insert in a specific orientation, with internal coolant discharge ports positioned to avoid protrusion and ensure efficient coolant supply to the cutting edge, allowing for compact configuration and interference-free mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the nozzle part extends from the shank part in the Y axis direction to supply coolant from the rake surface side, then coolant supply effectiveness is improved, but the turning tool may interfere with adjacent turning tools when mounted on a comb type tool rest
Solution Approach 1:
The discharge port is repositioned from an external extension in the Y-axis direction to an internal configuration within the tool body. The coolant discharge path is directed through the tool body interior to reach the cutting edge, eliminating the need for external protruding structures while maintaining effective coolant delivery to the cutting zone.
2Object-affected harmful factors
If the nozzle part does not extend from the shank part to avoid interference, then interference with adjacent tools is reduced, but sufficient coolant may not be supplied to the cutting edge
Solution Approach 1:
The coolant discharge mechanism is nested within the tool body structure. The discharge port is configured inside the tool body, utilizing the internal space to deliver coolant directly to the cutting edge without requiring external protruding components. This nested configuration maintains compact tool dimensions while ensuring adequate coolant flow to the cutting zone.
3Volume of moving object
If the coolant discharge path is non-linear to accommodate compact tool body configuration, then tool body compactness is improved, but coolant supply efficiency may be reduced
Solution Approach 1:
The tool body exhibits asymmetric internal structure with the discharge port positioned specifically on one side rather than centrally. This localized configuration optimizes the coolant flow path within the compact tool body, directing coolant efficiently to the cutting edge while maintaining a reduced overall tool volume. The asymmetric design allows effective coolant delivery without requiring a larger or more complex tool body structure.
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 prevents interference with other tools and ensures a sufficient coolant supply to the cutting edge, enhancing machining performance and tool rigidity while maintaining a compact tool body configuration.
Implementation Method 1
the coolant supplied from the rake surface side cools the rake surface and prevents crater wear
Implementation Method 2
By injecting the coolant to the cutting edge at high pressure, chips can be broken into small pieces and discharged efficiently
Data Source
AI summary
A turning tool (1) that does not easily interfere with other tools and can supply a sufficient amount of coolant is provided. The turning tool (1) includes: a cutting insert (10) which is mirror-image symmetric with respect to a first and second symmetric surfaces (M1, M2); and a tool body (2) which has a first discharge port (5) to supply coolant to a first cutting edge (21E) of the cutting insert (10) from a first rake surface (21R) side. The first discharge port (5) is disposed between a second flat surface (32) and a first reference surface (Vxz) which is parallel with the second flat surface (32) and includes an edge line of the first cutting edge (21E).