Turning Tool Coolant Jet Reorientation for Internal and External Turning
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Solution Overview
Problem
Existing turning tools optimized for external turning cannot be used for internal turning due to footprint restrictions, as the cooling fluid outlets interfere with the workpiece surface during internal operations.
Innovation Solution
A turning tool design featuring a guiding block with a fluid passage and outlets that can be moved between positions to adjust the orientation of the cooling fluid jet, allowing optimal cooling of the cutting insert's clearance surface during both external and internal turning by changing the fluid passage's outlet orientation relative to the tool body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cooling fluid outlet is positioned to optimize cooling of the clearance surface during external turning, then cooling efficiency is improved, but the outlet interferes with the workpiece surface during internal turning
Solution Approach 1:
The guiding block is made movable between a first position (for external turning) and a second position (for internal turning). This dynamic repositioning allows the cooling outlet orientation to be adjusted according to the turning operation type, resolving the conflict between optimal cooling during external turning and avoiding interference during internal turning
Solution Approach 2:
The guiding block serves multiple functions: it guides the cutting insert during indexing operations and simultaneously positions the cooling fluid outlet. By making the guiding block movable, it enables the same tool to perform both external turning with optimized cooling and internal turning without interference, achieving multi-functionality
2Temperature
If the guiding block is positioned for optimal cooling during external turning, then cooling performance is improved, but the tool cannot be used for internal turning due to footprint restrictions
Solution Approach 1:
The guiding block's position is made dynamic rather than fixed. It can be moved between a first position that optimizes cooling for external turning and a second position that reduces the tool's footprint for internal turning operations, enabling the tool to adapt to different machining scenarios
Solution Approach 2:
The tool body is segmented into fixed components and the movable guiding block component. This segmentation allows the guiding block to be independently repositioned without affecting the overall tool structure, enabling adaptability for both external and internal turning while maintaining cooling functionality
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
Enables effective cooling of the cutting insert's clearance surface during external turning while avoiding interference during internal turning, ensuring efficient machining in both scenarios by adjusting the jet's direction to intersect on the clearance surface.
Implementation Method 1
a fluid passage with an inlet end and at least one outlet which is arranged to guide a cooling fluid from the inlet end to the at least one outlet, wherein the at least one outlet is arranged to eject a jet of the cooling fluid towards an area where the clearance surface is located
Implementation Method 2
the at least one outlet is arranged to eject a jet of the cooling fluid towards an area where the clearance surface is located
Data Source
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AI summary
The present disclosure relates to a turning tool (1) comprising a tool body (4) having an insert seat (3) to accommodate a cutting insert (2) and a mounting means for mounting the cutting insert at the tool body, a guiding block (15) movably mounted between a first position and a second position at the tool body, and a fluid passage (21) with an inlet end and at least one outlet (19,20) which is arranged to guide a cooling fluid from the inlet end to the at least one outlet, wherein the at least one outlet is arranged to eject a jet (14) of the cooling fluid onto a clearance surface associated with the cutting edge at the cutting insert, wherein a first section of the fluid passage extends through the tool body, wherein a second section of the fluid passage extends through the guiding block, and wherein the at least one outlet forms an end of the second section of the fluid passage in the guiding block. It is an aspect of the present disclosure to provide a turning tool allowing an optimized cooling of a clearance surface of the cutting insert during an external turning operation while at the same time allowing internal turning with the same turning tool. According to the present disclosure this aspect is addressed by a turning tool as outlined above wherein at least the tool body or the guiding block is arranged such that when the guiding block is in the first position the jet of cooling fluid is ejected along a first line and such that when the guiding block is in the second position the jet of cooling fluid is ejected along a second line, wherein the first line and the second line have different orientations and intersect each other at a position in a downstream direction from the outlet.