CNC Chip Evacuator Tool for Automated Long Chip Removal

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Solution Overview

Problem

Current machining processes require manual intervention to remove and dispose of long, interlocked chips, which is inefficient and hazardous, disrupting machine uptime and increasing costs.

Innovation Solution

An automated chip evacuator tool controlled by a CNC machine, equipped with a circular body and hook members, that rotates to catch and remove chips from machined parts, eliminating the need for manual handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual chip removal is used, then the machinist can remove chips by hand, but machine uptime is reduced and safety hazards increase

Engineering Contradiction:
Improvemachine uptimeVSAvoidmanual handling requirement
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The chip evacuator tool is designed to automatically remove chips from the workpiece without requiring manual intervention. The tool attaches to the CNC machine tool and autonomously performs chip removal operations, allowing the system to service itself during machining operations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The chip evacuator tool acts as an intermediary device between the CNC machine tool and the chips. It features a circular body with hook members that mechanically engage with and extract chips from the workpiece area, serving as a mediator that transfers chips from the machining zone to a collection point.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If manual chip removal is used, then chips can be removed from the part, but safety hazards increase due to sharp chips

Engineering Contradiction:
Improvechip removal efficiencyVSAvoidsafety hazards from sharp chips
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The automated chip evacuator tool eliminates the need for machinists to manually handle sharp chips. The tool autonomously performs the chip removal function, protecting operators from exposure to hazardous sharp chip edges while maintaining efficient chip removal capabilities.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The chip evacuator tool serves as a protective intermediary that handles the hazardous chips instead of human operators. The tool's mechanical structure with hook members safely engages and removes chips without requiring direct human contact with sharp chip edges.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If automated chip evacuator tool is used, then machine uptime increases and safety is improved, but device complexity increases

Engineering Contradiction:
Improvemachine uptimeVSAvoidautomated tool structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The chip evacuator tool is designed as a modular attachment that can be independently mounted to the CNC machine tool. The tool consists of discrete components including a circular body and separate hook members, allowing for simplified installation and maintenance without complicating the overall machine system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The chip evacuator tool is designed to be compatible with various CNC machine tools, providing a universal solution for chip removal across different machining operations. The tool's circular body with hook members can effectively handle different chip types and sizes, making it a multi-functional device that reduces the need for specialized removal tools.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3744474B1Chip evacuator tool
Publication Date: 2023.08.23 RTX CORP
  • EP3744474B1 patent drawingFigure 1A
  • EP3744474B1 patent drawingFigure 1B
  • EP3744474B1 patent drawingFigure 2

AI summary

A chip evacuator tool (10) includes at least one hook member (26, 28) configured to grab and remove chips from a machined part (14). The chip evacuator tool (10) is attached to and rotates with a spindle (18) of a machine tool (12), which is controlled using a computer (16) of a CNC machine. In operation the location of the chip evacuator tool (10) remains stationary while both the chip evacuator tool (10) and the machined part (14) rotate in the same direction, resulting in efficient removal of chips from the machined part (14).