Robot-Guided Saw Machining for Precise Composite Cutting

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Solution Overview

Problem

Current machining methods for composite materials and honeycomb structures are costly and lack precision, requiring large-scale machine tools and manual finishing due to limitations in positioning accuracy and efficiency.

Innovation Solution

A machining apparatus comprising an electromotive saw attached to a robot arm with an attaching mechanism, allowing for automated cutting and processing of composite materials and honeycomb structures using a band saw, wire saw, or chain saw, with a guide and pressure sensor for improved accuracy and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a column type machine tool is used for machining composite materials and honeycomb structures, then machining precision can be maintained, but manufacturing cost increases and automation is limited

Engineering Contradiction:
Improvemachining precisionVSAvoidautomation level
Core Design Contradiction:
Manufacturing precisionVSExtent of automation

Solution Approach 1:

The patent replaces the traditional column type machine tool mechanical system with a robot arm system. The robot arm, equipped with a specialized end effector holding a cutting tool, performs machining operations that were previously done by manual operators on expensive machine tools. This substitution achieves both automation and maintains machining precision through the robot's controlled movement and positioning capabilities.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The robot arm system performs self-positioning and self-machining operations without requiring manual intervention. The end effector is designed to automatically hold and position the cutting tool, and the robot arm autonomously executes the machining path, eliminating the need for operators to manually operate complex machine tools while maintaining consistent precision.

Inventive Principle:
Principle #25Self-service

2Productivity

If manual work with hand tools is used for finishing processing, then flexibility is maintained, but productivity decreases and precision is limited

Engineering Contradiction:
ImproveproductivityVSAvoidfinishing precision
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent replaces manual hand tools with an automated robot arm system. The robot arm, controlled by a program, executes precise machining paths with consistent repeatability, eliminating the precision limitations of manual operations. The system maintains the flexibility of hand tools while dramatically improving productivity and precision through automation and controlled movement.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The robot arm system copies the precise movements and techniques of skilled manual operators through programmed instructions. By recording and reproducing the ideal machining path and tool movements, the system achieves consistent high precision finishing that matches or exceeds manual capabilities while dramatically increasing productivity through automation.

Inventive Principle:
Principle #26Copying

3Power

If large-scale machine tools are used for cutting, then cutting capability is sufficient, but device complexity and cost increase

Engineering Contradiction:
Improvecutting capabilityVSAvoiddevice complexity
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The patent segments the cutting function from the positioning function. Instead of using a large-scale machine tool that combines both functions in a complex system, the invention uses a simpler robot arm for positioning and a separate cutting tool for the actual cutting operation. This segmentation reduces device complexity while maintaining sufficient cutting capability through the specialized end effector and cutting tool combination.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent replaces the complex mechanical system of large-scale machine tools with a simpler robot arm system. The robot arm provides the necessary positioning and movement capabilities, while the cutting tool mounted on the end effector provides the cutting function. This substitution eliminates the need for complex machine tool structures, reducing device complexity while maintaining adequate cutting power for the application.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS11440110B2Machining apparatus and machining method
Publication Date: 2022.09.13 SUBARU CORP
  • US11440110B2 patent drawing
  • US11440110B2 patent drawing
  • US11440110B2 patent drawing

AI summary

According to one implementation, a machining apparatus includes an electromotive saw and an attaching structure. The electromotive saw cuts off a workpiece to be machined. The attaching structure attaches the saw to an arm of a robot. Further, according to one implementation, a machining method is provided. In the machining method, a machined product is manufactured by processing a composite material or a honeycomb structure with a cutting tool attached to an arm of a robot. Further, according to one implementation, a machining method is provided. In the machining method, a machined product is manufactured by processing a workpiece to be machined with a cutting tool attached to an arm of a robot. The workpiece is processed along a shape of a jig for setting the workpiece. The workpiece is processed with contacting a guide with the jig. The guide is attached to the arm.