Cutting Tool Coolant Deflection for Reliable Chip Evacuation
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Solution Overview
Problem
Conventional cutting tools face challenges in efficiently removing chips from complex workpieces, such as engine blocks made of aluminum, as chips often get flung into recesses or embedded channels, leading to increased cleaning efforts and unreliable processes.
Innovation Solution
The tool head's end face is equipped with coolant grooves that deflect the coolant flow, using a baffle disk to redirect the coolant and chips away from the workpiece, with grooves extending counter to the tool's rotation direction and a chip removal surface that is inclined and funnel-shaped to facilitate backward chip removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the coolant jet is guided directly out of the tool head towards the cutting edge, then the cooling effect at the cutting edge is improved, but chips are flushed into cavities and recesses in the workpiece
Solution Approach 1:
The coolant supply is segmented into multiple outlets arranged in a circle on the end face, with each outlet connected to the central channel. This segmentation allows the coolant to be distributed to multiple points, creating a controlled flow pattern that directs coolant toward the cutting edge while preventing chips from being flushed into workpiece cavities
Solution Approach 2:
The coolant outlets are arranged in a circular pattern on the end face plane, transforming the linear coolant flow into a radial distribution pattern. This dimensional change allows the coolant to reach the cutting edge effectively while the circular arrangement prevents chip injection into workpiece recesses
2Device complexity
If simple coolant grooves are made in the end face, then the device complexity is reduced, but the coolant jet freely escapes without targeted deflection
Solution Approach 1:
The coolant grooves are pre-formed in the end face at specific orientations and positions before the cutting operation. This preliminary structuring of the coolant path ensures that when coolant is supplied, it is automatically directed along the predetermined grooves toward the cutting edge, providing reliable chip removal without complex additional components
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
This solution effectively prevents coolant and chips from escaping radially, ensuring a high manufacturing quality by reliably removing chips from the workpiece, reducing cleaning efforts and improving the chip removal process.
Implementation Method 1
coolant grooves that deflect the coolant flow, using a baffle disk to redirect the coolant and chips away from the workpiece
Implementation Method 2
In order to assist with the backwardly directed chip removal by means of a suction effect or a turbine effect
Implementation Method 3
In order to assist with the backwardly directed chip removal by means of a suction effect or a turbine effect
Data Source
AI summary
This disclosure relates to a cutting tool having a tool head that can be rotated about its mid-axis and has a front end face and a circumferential surface, a plurality of cutting elements and associated chip grooves arranged to be distributed in the circumferential direction on the circumferential surface, and a channel system running through the tool head for the coolant supply to the cutting elements. According to this disclosure, the end face of the tool head has coolant grooves, which each lead from an outlet opening of the channel system to an end opening in a chip groove, wherein the longitudinal openings of the coolant grooves are covered by a baffle plate fixed to the front face of the tool head.