Cutting Die Offset Calculation for Tolerance Control

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Solution Overview

Problem

The manufacture of steel rule cutting dies is complex due to the need for precise shapes within a predetermined tolerance, making it difficult to ensure the shape of the manufactured cutting die falls within the specified tolerance, which affects efficiency and material usage in cutting processes.

Innovation Solution

A system and method that utilize a processor to receive images of desired cutting dies, identify cutting edges and features, calculate an offset distance based on tolerance specifications, and generate images of modified cutting dies to reduce size and shape while maintaining geometric relationships, allowing for more precise cutting and reduced material waste.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If steel rule stock is used to manufacture cutting dies, then the cutting die can be used hundreds or thousands of times to cut materials consistently, but the manufacture process becomes complex and difficult to control within predetermined tolerance

Engineering Contradiction:
Improvereusability of cutting dieVSAvoidmanufacture process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by calculating the offset distance before manufacturing the cutting die. The processor receives an image of the desired cutting die, identifies the cutting edge and features, calculates the offset distance based on tolerance specifications, and generates a modified image that accounts for manufacturing variations. This preliminary calculation ensures the final die will be within tolerance without requiring complex manufacturing processes.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces traditional mechanical measurement and adjustment methods with an automated image processing and calculation system. Instead of manually measuring and adjusting the cutting die during manufacturing, the system uses digital image analysis, automated feature identification, and computational offset calculation to determine the correct die dimensions before manufacturing begins.

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

2Productivity

If the cutting die shape is modified to account for offset distance, then the cutting die can be placed more efficiently with reduced spacing, but the die size and shape must be precisely calculated within tolerance

Engineering Contradiction:
Improvedie placement efficiencyVSAvoidshape tolerance control
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The system incorporates feedback by using the identified cutting edge and features to calculate the offset distance, then applying this offset to generate the modified die image. The process continuously refines the die dimensions by considering the tolerance specifications and adjusting the offset accordingly, ensuring the final design meets precision requirements while optimizing placement efficiency.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent changes critical parameters by calculating and applying the offset distance to modify the cutting die dimensions. The processor adjusts the die size and shape parameters based on the calculated offset, which is derived from tolerance specifications. This parameter modification allows tighter tolerance control while enabling more efficient die placement with reduced spacing between adjacent dies.

Inventive Principle:
Principle #35Parameter changes

3Measurement precision

If the cutting die is designed with precise angles and locations for each bend, then the cut materials will be consistent and predictable, but ensuring the manufactured die falls within predetermined tolerance is difficult

Engineering Contradiction:
Improvecutting accuracyVSAvoidtolerance compliance
Core Design Contradiction:
Measurement precisionVSManufacturing precision

Solution Approach 1:

The system performs preliminary calculations of the offset distance before manufacturing, using the desired cutting die image and tolerance specifications to determine the correct dimensions. This advance calculation ensures the manufactured die will meet tolerance requirements without requiring complex manufacturing processes or post-manufacturing adjustments.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces traditional mechanical measurement and tolerance control methods with an automated digital system. The processor uses image analysis to identify cutting edges and features, then computationally calculates the offset distance and generates modified die images that automatically account for tolerance requirements, eliminating the need for manual measurement and adjustment during manufacturing.

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

Data Source

PatentUS20240232471A9Systems and methods of providing a cutting die
Publication Date: 2024.07.11 ONTARIO DIE INT
  • US20240232471A9 patent drawing
  • US20240232471A9 patent drawing
  • US20240232471A9 patent drawing

AI summary

Systems and methods of generating an image of a modified desired cutting die are described herein. One image of a desired cutting die is received; an entire cutting edge of the desired cutting die in the image is identified, an image of a modified desired cutting die based on the offset distance and desired tolerance is generated. By using the systems and methods, The amount of material used to create a plurality of pieces of the material with a cutting machine is reduced.