Cutting Tool Nozzle Using a Liquid Barrier for Chip Containment
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Solution Overview
Problem
Existing cutting tools face issues with shields damaging the workpiece, causing friction, and being prone to wear or misalignment, especially when machining components with different materials, as chips from harder materials can interfere with or damage softer materials.
Innovation Solution
A cutting tool with a detachable nozzle that forms a liquid barrier around the cutting edges, using a liquid supply conduit to eject coolant that prevents chips from escaping and damaging the workpiece, while being adjustable for different machining processes and materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a protective shield is used to prevent chips from damaging the workpiece, then chip containment is improved, but the shield may damage the workpiece or cause friction
Solution Approach 1:
The patent uses a liquid barrier (hydraulic principle) to contain chips instead of a physical solid shield. Liquid is supplied through a conduit and ejected to form a barrier that prevents chips from escaping while causing minimal friction and damage to the workpiece surface, resolving the contradiction between effective chip containment and minimizing harmful contact with the workpiece
Solution Approach 2:
The liquid barrier acts as an intermediary substance between the chips and the workpiece. Instead of allowing direct contact between chips (harmful) or using a solid shield (causing friction), the liquid mediates by forming a protective barrier that contains chips without the negative effects of solid contact
2Reliability
If a protective shield is used to contain chips, then chip escape is prevented, but the shield is heavy and prone to wear or damage
Solution Approach 1:
The patent replaces the heavy solid shield with a liquid-based containment system. The liquid barrier provides reliable chip containment through controlled ejection and barrier formation, eliminating the weight and structural wear issues associated with solid shields while maintaining containment effectiveness
Solution Approach 2:
The liquid barrier system uses consumable liquid that can be continuously supplied and replaced, replacing the need for durable, heavy solid shields. The liquid performs its containment function and can be replenished, avoiding the wear and damage accumulation problems of solid shields
3Adaptability or versatility
If a protective shield is used to prevent chip interference, then multi-material machining is enabled, but the shield must maintain a tight seal against the workpiece
Solution Approach 1:
The liquid barrier system provides adaptability for multi-material machining by forming a flexible containment barrier that can accommodate different workpiece geometries and materials. The liquid can be supplied and adjusted to maintain effective containment without requiring complex mechanical sealing arrangements, reducing device complexity while enabling versatile machining applications
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 liquid barrier effectively prevents chip damage to the workpiece and maintains tool integrity by avoiding wear and misalignment, ensuring precise machining of components with varying material hardness.
Implementation Method 1
a liquid supply conduit extending from the rear end to a nozzle rearward of the front working zone, wherein the nozzle comprises an inlet in fluid connection with the liquid supply conduit
Implementation Method 2
the nozzle outlet is configured such that when liquid is supplied through the liquid supply conduit, the liquid ejected from the outlet forms a liquid barrier to prevent chips formed during machining from escaping through the barrier
Data Source
AI summary
The present cutting tool includes a rear end and a front end, with a longitudinal center axis extending from the front end to the rear end. The cutting tool further includes at least one chip-forming cutting edge for machining the workpiece, and a liquid supply conduit extending from the rear end to a nozzle rearward of the front working zone. The nozzle includes an inlet in fluid connection with the liquid supply conduit, and wherein the nozzle includes an outlet. The nozzle has a closed overall shape with an outer circumference that is larger than that of the radial location of the at least one cutting edge. The nozzle outlet is configured such that when liquid is supplied through the liquid supply conduit the liquid ejected from the outlet forms a liquid barrier to prevent chips formed during machining from escaping through the barrier.