Numerical Controller Deviation Correction via Offset Association

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Solution Overview

Problem

Existing numerical controllers require manual operator input to determine the relationship between offset numbers and deviation amounts, making the process complex and time-consuming.

Innovation Solution

A numerical controller that automatically determines an offset number by associating machining paths with effective offset values and reflecting deviation amounts to the corresponding measurement points, using a machining unit, measurement unit, and correction unit to automate the correction process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual operator input is used to determine the relationship between offset numbers and deviation amounts, then the numerical controller can correct workpiece deviations, but the operation process becomes complex and time-consuming

Engineering Contradiction:

Improveworkpiece deviation correctionVSAvoidoperator input complexity

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The numerical controller automatically determines the relationship between offset numbers and deviation amounts by itself, without requiring manual operator input. The correction unit reflects deviation amounts to appropriate offset values based on measurement point associations, enabling the system to self-correct workpiece deviations autonomously

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces the manual mechanical input process with an automated computational system. The correction unit uses algorithmic processing to associate measurement points with machining paths and automatically determine offset numbers, substituting operator manual work with automated digital processing

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Manufacturing precision

If manual operator input is used to determine offset numbers, then deviation correction can be performed, but the process requires significant operator time and effort

Engineering Contradiction:

Improvedeviation amount correctionVSAvoidoperator time for correction

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The system performs preliminary association between measurement points and machining paths during the measurement process. This pre-established association enables the correction unit to automatically determine the appropriate offset number without requiring operator analysis or input during the correction phase, significantly reducing operator time

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The numerical controller autonomously completes the entire correction process including determining which offset number to apply. The correction unit automatically reflects deviation amounts to the appropriate offset values based on the pre-established associations, eliminating the need for operator intervention and freeing up operator time

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10768603B2Numerical controller capable of correcting a deviation amount of a workpiece

Publication Date: 2020.09.08 FANUC LTD

AI summary

A numerical controller for correcting a deviation amount corresponding to a difference between a theoretical value and a measured value of a workpiece includes a machining unit for storing a machining path of the workpiece and an effective offset number during machining of the machining path in association with each other, a measurement unit for storing a deviation amount applied to the workpiece and a measurement point at which the deviation amount is detected in association with each other, and a correction unit for reflecting the deviation amount to the offset number corresponding to the machining path around the measurement point.