Machine Tool Power Failure Monitoring With Centralized Event Logging

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Solution Overview

Problem

Existing machine tool monitoring systems complicate operator management by not providing clear insights into power failures across multiple machine tools, requiring individual checks and lacking detailed records of failure events and protection operations.

Innovation Solution

A machine state monitoring device that includes a detection unit for power failures, a transmission unit for sending and receiving failure data, and a storage unit to record and manage information on power failures, protection operations, and motor states across multiple machine tools, enabling centralized management and analysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If individual machine tool monitoring is implemented, then power failure detection capability is improved, but operator management complexity increases

Engineering Contradiction:
Improvepower failure detection capabilityVSAvoidoperator management complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple individual machine tool monitoring functions into a single centralized management system. The centralized system aggregates power failure detection data from multiple machine tools, allowing operators to manage all machines through one interface rather than checking each machine individually, thus reducing management complexity while maintaining detection capability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The centralized management system serves multiple machine tools simultaneously with a single system. It provides universal power failure detection, status monitoring, and management functions across all connected machine tools, eliminating the need for separate monitoring systems for each machine and simplifying operator workflows.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Loss of information

If detailed power failure records are stored, then diagnostic capability is improved, but data management burden increases

Engineering Contradiction:
Improvediagnostic information retentionVSAvoiddata management burden
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The system consolidates diagnostic data from multiple machine tools into a single centralized database. Instead of managing separate records for each machine, all power failure events, timestamps, and diagnostic information are aggregated in one location, reducing the overall data management burden while preserving complete diagnostic information for analysis.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The centralized management system acts as an intermediary between individual machine tools and operators. It automatically collects, stores, and organizes detailed power failure records, then presents this information in a manageable format to operators, eliminating the need for operators to directly handle complex data management tasks while retaining full diagnostic capability.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS11340580B2Machine state monitoring device
Publication Date: 2022.05.24 FANUC LTD
  • US11340580B2 patent drawing
  • US11340580B2 patent drawing
  • US11340580B2 patent drawing

AI summary

A machine state monitoring device is a machine state monitoring device that is intended for a motor drive device of a machine tool. The motor drive device includes: a motor; a converter and an inverter that adjust a power supply voltage; a power failure detection unit that acquires an input voltage of the motor drive device so as to detect a power failure in the motor drive device; and a communication unit that transmits, based on the result of the detection of the detection unit, a time when the power failure is started, and a time when the power failure is completed. The machine state monitoring device includes: a communication unit that receives information of the time when the power failure is started and the time when the power failure is completed from the communication unit of the motor drive device; and a storage unit that stores the information.