Numerical Control for Automatic Machine Tool Parameter Selection
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Solution Overview
Problem
Machining programs may be incorrectly written with different G codes, leading to inappropriate control information settings, which can result in lower machining accuracy and longer machining times.
Innovation Solution
A numerical controller that includes a control information storage unit, a determination unit to select appropriate control information based on speed instructions, and a control unit to execute this information, ensuring suitable control settings for machine tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If G codes are manually written in machining programs, then the program can be created and executed, but errors may occur where wrong G codes are written leading to incorrect control information settings
Solution Approach 1:
The system automatically determines appropriate control information by analyzing speed instructions and motion types in the machining program, eliminating the need for manual G code selection. The numerical controller self-services by inferring the intended motion type and selecting corresponding control parameters, thereby preventing errors from wrong G code entry while maintaining ease of program creation.
Solution Approach 2:
The system analyzes the speed instruction values and motion characteristics to feedback-determine the appropriate control information. By monitoring the actual motion parameters and comparing them against stored control information templates, the system automatically selects the correct control settings, ensuring reliability without requiring manual intervention.
2Productivity
If wrong control information is set due to incorrect G codes, then machining can proceed, but machining accuracy deteriorates and machining time increases
Solution Approach 1:
The system performs preliminary determination of control information based on speed instructions before actual machining execution. By pre-analyzing the motion requirements and selecting appropriate control parameters in advance, the system ensures that correct control information is ready, preventing accuracy deterioration and avoiding time loss from mid-process corrections.
Solution Approach 2:
The system dynamically changes control parameters based on the analyzed speed instructions and motion types. By automatically adjusting position gain, feedforward coefficients, and acceleration/deceleration time constants according to the detected motion characteristics, the system maintains optimal machining accuracy and efficiency without manual intervention.
Data Source
AI summary
This numeral control device includes a control information storage unit that stores a plurality of control information items for controlling a control shaft of a machine tool; a control information determination unit that, on the basis of a speed command for designating a feed speed of the control shaft or a movement command derived from the speed command, determines one control information item among the plurality of control information items stored in a control information storage unit; and a control unit that controls the control shaft on the basis of the one control information item determined by the control information determination unit.