Machine Tool Automatic Cutting Condition Modification
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Solution Overview
Problem
Existing machine tools face difficulties in automatically modifying cutting conditions, particularly in adjusting cutting widths and depths within appropriate ranges without manual intervention, and determining whether modified conditions are appropriate, especially when dealing with complex machining programs.
Innovation Solution
A machine tool equipped with a tool cutting condition setting unit, modification condition setting unit, load calculation unit, and determination unit to automatically modify cutting conditions by setting upper and lower limits for cutting width, depth, and load, and calculating the cutting load to ensure modifications fall within designated ranges, allowing for flexible adjustment of cutting conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cutting conditions are manually corrected in a complicated machining program, then cutting conditions can be modified, but it is extremely troublesome and time-consuming to correct all cutting conditions manually
Solution Approach 1:
The system automatically modifies cutting conditions by itself without requiring manual intervention. The determination unit automatically determines whether modified cutting conditions are appropriate by comparing them against predetermined appropriate ranges, and the modification condition setting unit automatically adjusts cutting feed speeds and spindle rotational speeds based on the determination results, enabling the system to self-correct cutting conditions throughout the machining program.
Solution Approach 2:
The patent replaces manual mechanical correction processes with an automated information processing system. The controller automatically reads the machining program, determines appropriateness of cutting conditions using the determination unit, and modifies parameters through software-based logic rather than manual intervention, substituting human operators with an automated control system.
2Extent of automation
If cutting conditions are automatically modified without considering appropriate ranges, then modification is easier, but it cannot determine whether the modified cutting conditions are appropriate or not
Solution Approach 1:
The system incorporates a determination unit that provides feedback on whether modified cutting conditions are appropriate. After the modification condition setting unit automatically modifies cutting conditions, the determination unit compares the modified values against predetermined appropriate ranges and provides feedback determination results, which are then used to adjust the modification parameters accordingly, ensuring reliability through continuous monitoring and adjustment.
Solution Approach 2:
The patent establishes predetermined appropriate ranges for cutting conditions before the automatic modification process begins. These reference ranges are set in advance based on machining expertise and material properties, allowing the system to evaluate and ensure the reliability of automatically modified cutting conditions by comparing them against these pre-established standards.
3Manufacturing precision
If cutting width and cutting depth are modified manually by comparing machined object shape with machining program, then these cutting conditions can be adjusted, but it brings about a problem that modifying these cutting conditions cannot be performed easily
Solution Approach 1:
The system replaces manual visual comparison and adjustment processes with automated image processing and control algorithms. The determination unit automatically compares the shape of the machined object with the machining program data, and the modification condition setting unit automatically calculates and adjusts cutting width and depth parameters, substituting manual measurement and calculation with automated computational methods.
Solution Approach 2:
The patent uses the machining program data as a digital copy or reference model of the desired machined object shape. By comparing the actual machined object against this digital copy stored in the program, the system can automatically determine deviations and adjust cutting parameters without requiring manual measurement and comparison, making the process easier while maintaining precision.
Data Source
AI summary
The machine tool according to the present invention has: a function to set upper limits and lower limits for cutting conditions including a cutting width, a cutting depth, and a cutting load of a tool; a function to set a range and a modification condition of the machining program modifying the cutting width or the cutting depth of the tool; a function to modify, based on the modification condition, a movement amount of a block that orders a feeding operation of the machining program; a function to calculate a load imposed upon cutting, based on a cutting condition obtained prior to modification of the machining program and a variation in the modified movement amount; and a function to determine whether or not the calculated load and the modified movement amount fall within the set ranges between the upper limits and the lower limits of the cutting width or cutting depth and the cutting load.