Machine Tool Machining File Recovery After Transmission Interruptions
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Solution Overview
Problem
Machine tools face interruptions in machining operations due to transmission failures, leading to inefficiencies and safety risks, as existing methods either restart from the beginning or require cumbersome manual recovery, and do not ensure data integrity or consistency post-interruption.
Innovation Solution
A method that generates and compares check information before and after an interruption to verify the integrity and consistency of the machining file, allowing for safe and reliable resumption of operations by recovering the execution from the correct position in the machining file.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the machine tool restarts all programs from the beginning after an interruption, then the machining process can be completed, but the machining efficiency and productivity are reduced due to repetitive work
Solution Approach 1:
The patent applies preliminary action by generating and storing check information (checksums) for each segment of the machining file before the interruption occurs. When an interruption is detected, the system uses these pre-generated check values to quickly verify which segments remain valid and need re-execution, rather than restarting from the beginning. This allows the machine tool to resume machining operations efficiently by only reprocessing the necessary segments.
2Productivity
If manual recording and recovery of machining file position and parameters is performed, then the machining can be continued from the interruption point, but the operation becomes highly specialized, cumbersome and time-consuming
Solution Approach 1:
The patent implements self-service by enabling the machine tool's control system to automatically perform all interruption recovery operations. The system autonomously detects interruptions, generates check information for file segments, compares check values to identify valid segments, and resumes execution without human intervention. This eliminates the need for specialized manual operations while maintaining machining continuity.
Solution Approach 2:
The patent uses feedback mechanisms by continuously monitoring the machining file transmission and execution status. When an interruption occurs, the system automatically compares the check information of received segments with previously stored check values to determine which segments are complete and valid. This feedback loop enables automatic recovery without manual intervention.
3Productivity
If the machine tool reads a modified or damaged machining file after interruption, then the file may be executed, but the machining file integrity and consistency cannot be ensured, leading to potential errors or dangerous actions
Solution Approach 1:
The patent applies preliminary action by generating check information (such as checksums or hash values) for each segment of the machining file during the initial transmission and storage phase. These pre-computed check values serve as integrity markers that allow the system to verify file consistency later without requiring complex validation during execution.
Solution Approach 2:
The patent implements a feedback mechanism where the control system automatically compares the check information of the machining file segments after an interruption with the previously stored check values. This comparison provides feedback on whether the file segments have been modified, damaged, or corrupted, ensuring that only intact and consistent segments are executed.
4Quantity of substance
If the machining file is stored in external memory due to limited machine tool memory, then large machining files can be processed, but transmission interruptions may occur due to hardware connection failures or unstable network environment
Solution Approach 1:
The patent applies segmentation by dividing the machining file into multiple segments during transmission from external memory to the machine tool. Each segment is independently transmitted, stored, and validated with its own check information. This segmentation approach allows the system to handle large files that exceed machine tool memory capacity while enabling granular error detection and recovery at the segment level.
Solution Approach 2:
The patent uses check information (checksums or hash values) as an intermediary mechanism to verify the integrity of machining file segments transmitted from external memory. This intermediary validation layer detects transmission errors caused by hardware connection failures or network instability without requiring retransmission of entire files.
Data Source
AI summary
Provided are an interruption recovery method for a machine tool machining file and a machine tool applying the method. The interruption recovery method includes: generating first check information when a machine tool machining file is executed, the machine tool machining file being stored in an external memory; generating second check information when the machine tool machining file is re-executed after an interruption occurs; comparing the first check information and the second check information to determine whether the machine tool machining file is changed before and after the interruption; and recovering the execution of the machine tool machining file when the first check information matches the second check information. By generating and comparing the check information before and after the interruption to verify the integrity and consistency of data of the machine tool machining file, the machine tool machining can be carried out accurately and unerringly.