Machine Tool File Recovery Using Check Information Verification
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Solution Overview
Problem
Machine tools face interruptions in machining file transmission due to hardware device failures or unstable network environments, leading to inefficient and unsafe recovery methods, including complete restarts or cumbersome manual recovery, which can result in incorrect file execution and compromised machining quality.
Innovation Solution
An automated interruption recovery method for machine tool machining files, involving the generation and comparison of check information before and after interruptions to ensure data integrity and consistency, allowing the machine tool to resume operations from the precise interruption position without re-running the entire program, using methods like CRC, hash functions, or MD5 algorithms to verify file integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the machine tool restarts all programs from the beginning after interruption, then the machining process can be completed, but machining efficiency and productivity are reduced due to repetitive work
Solution Approach 1:
The system performs preliminary actions by recording the interruption position, coordinate values, and spindle speed values before resuming machining. This allows the machine tool to restore to the exact state before interruption without restarting the entire program, thereby maintaining reliability while improving productivity by eliminating repetitive work.
2Reliability
If manual interruption recovery is performed by recording current position and parameters, then the machining can be resumed from the interruption point, but the operation becomes highly specialized, cumbersome and time-consuming
Solution Approach 1:
The machine tool system performs self-service by automatically recording interruption positions, coordinate values, and spindle speed values, and then automatically restoring these parameters when resuming machining. This eliminates the need for specialized manual intervention, reducing operational complexity and time requirements while maintaining accurate resumption.
Solution Approach 2:
The system implements feedback by continuously monitoring and recording the current position, coordinate values, and spindle speed during machining. When an interruption occurs, this recorded feedback information is used to automatically restore the machine state, enabling accurate resumption without manual intervention.
3Productivity
If the machine tool reads the machining file after interruption without verification, then the operation can be resumed quickly, but the file may be inconsistent or incomplete leading to wrong machining actions
Solution Approach 1:
The system performs preliminary verification by comparing the machining file before and after interruption using check information such as file headers, footers, or checksums. This preliminary check ensures file consistency and completeness before resuming machining, guaranteeing safety and reliability while maintaining quick recovery through automated verification processes.
Data Source
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AI summary
Provided in the present invention are an interruption recovery method for a machine tool machining file and a machine tool applying the method, wherein the interruption recovery method comprises the following steps: generating first check information when a machine tool machining file is executed, wherein the machine tool machining file is stored in an external memory with respect to a machine tool; 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, it is ensured that the machine tool machining can be carried out accurately and unerringly, and the machining process is always ensured to be safe and reliable in the event of a transmission interruption failure of the machining file.