Beam Cutting Rules for Free-Form Part Clustering
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Solution Overview
Problem
Beam cutting technologies face significant material waste and inefficiencies due to ineffective part placement methods and technology rules, leading to high material and machine costs, as well as challenges in minimizing piercings, position distances, and cutting distances, particularly when cutting free-form parts.
Innovation Solution
Implementing a set of controlling rules that allow parts to be positioned close together with micro joints, optimizing cutting distances, and using strategic turning areas and tool radius compensation to minimize waste and improve cutting efficiency, including rules for forming clusters of parts, creating micro joints, and adjusting for different materials and cutting technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional nesting part placement methods are used with safe distances of 5-20mm between parts, then manufacturing reliability is maintained, but material waste increases to 20-50% and productivity decreases
Solution Approach 1:
The patent changes the critical parameter of safe distance between parts from traditional 5-20mm to minimal distance (only beam thickness). This is achieved through controlled piercing operations at specific locations and micro-joint creation, which maintain part stability while eliminating excessive material waste. The parameter change directly reduces material waste from 20-50% to minimal levels while preserving manufacturing reliability.
Solution Approach 2:
The patent performs preliminary piercing operations and creates micro-joints before final part separation. These preliminary actions establish stable support structures and connection points that prevent part instability during cutting, allowing parts to be placed closer together without compromising manufacturing reliability. The preliminary micro-joint creation enables minimal safe distances while maintaining part integrity.
2Reliability
If multiple piercings are used to ensure part stability and quality, then manufacturing reliability improves, but machine costs and processing time increase
Solution Approach 1:
The patent applies piercings and micro-joints only at local critical positions where parts require support or connection, rather than using multiple piercings throughout the entire workpiece. This localized approach maintains part stability and manufacturing reliability at critical points while minimizing the total number of piercings, thereby reducing machine costs and processing time.
Solution Approach 2:
The patent extracts and eliminates unnecessary piercings from the cutting process by using micro-joints and strategic piercing placement. Only essential piercings that provide critical support or connection functions are retained, while redundant piercings are removed. This reduces the total piercing count, improving productivity while maintaining manufacturing reliability through the retained essential piercings and micro-joint structures.
3Reliability
If larger safe distances are maintained between parts, then part stability and quality are ensured, but cutting distances and machine costs increase
Solution Approach 1:
The patent changes the safe distance parameter from traditional large values (5-20mm) to minimal values (beam thickness only). This is compensated by introducing micro-joints and controlled piercing operations that provide necessary part stability and quality assurance at minimal distances. The parameter change reduces cutting distances and improves productivity while maintaining part quality through the micro-joint and piercing support structures.
4Manufacturing precision
If tool radius compensation is applied to maintain precise part dimensions, then manufacturing precision improves, but the cutting process requires stopping and restarting, reducing productivity
Solution Approach 1:
The patent implements continuous cutting operations by using micro-joints and controlled piercings that allow the cutting beam to maintain continuous operation. Instead of stopping and restarting for tool radius compensation, the micro-joint structures enable the beam to continue cutting through minimal uncut sections, maintaining manufacturing precision while eliminating interruptions and improving productivity.
Data Source
AI summary
The present invention relates to a method and a system for machine cutting several parts out of a piece of material using a beam cutting technology. The invention provides a set of controlling rules and variables for cutting two dimensional shapes or patterns. One rule or a combination of several rules are used for the cutting operation depending on the shape or pattern to be cut, the shape or pattern forming the parts out of the piece of material. The present invention specifically teaches that the set of controlling rules comprises rules for the forming of a cluster of parts with free form shapes, the parts being positioned so close to each other so that only the thickness of one cut made by the cutting beam is found between adjacent parts whenever the shape of the parts allows it.