Machine Tool Control for Selectable Vibration Cutting Parameters
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Solution Overview
Problem
The existing machine tools face difficulties in allowing users to select vibration conditions based on input rotations or vibrations due to vibration frequency being determined by the control device's operational period, limiting machining flexibility.
Innovation Solution
A control device that allows users to input desired rotations or vibrations, extracts and presents viable vibration conditions, and enables selection of these conditions, including the option to add new combinations, facilitating customizable vibration cutting operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vibration frequency is determined based on the control device's operational period, then the control system can execute operating instructions reliably, but the user cannot freely select vibration conditions according to desired rotations or vibrations
Solution Approach 1:
The patent introduces a presenting means as an intermediary between the inputting means and the control section. This presenting means extracts and presents multiple candidate vibration conditions based on user input, allowing the user to select from viable options without directly programming the control logic. The presenting means mediates between the simple user interface and the complex control system, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The control device performs self-service by automatically extracting and presenting candidate vibration conditions based on the operational period and user input. The system autonomously calculates which vibration conditions are viable given the control cycle constraints, eliminating the need for users to manually compute or program these constraints. This self-service capability enables flexible vibration condition selection without increasing user burden or system complexity.
2Ease of operation
If multiple vibration conditions are made selectable, then the user can easily select desired vibration conditions, but the system requires extraction and management of multiple parameter combinations
Solution Approach 1:
The patent extracts the complex parameter management functions from the user's responsibility and places them in the presenting means. The extracting section automatically generates and presents multiple candidate vibration conditions with their parameters (number of rotations, number of vibrations, vibration frequency) based on the operational period. This extraction of complexity enables ease of operation while managing parameter combinations systematically.
3Reliability
If the control device automatically corrects vibration conditions to match operational period, then the system maintains reliable control execution, but the user's desired vibration conditions may not be achievable
Solution Approach 1:
The patent implements a dynamic approach where the system first determines the operational period for reliable control execution, then dynamically generates multiple candidate vibration conditions based on this period and user input. The system adaptively adjusts and presents viable options rather than rigidly enforcing a single corrected value. This dynamic generation of candidates maintains reliability while preserving user flexibility in selecting achievable vibration conditions.
Data Source
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AI summary
To provide a machine tool and a control device for the machine tool that allows a user to select the vibration condition according to an input number of rotations and an input number of vibrations. The control device (184) for the machine tool (180) includes: inputting means (182) for inputting a relative number of rotations or a relative number of vibrations of the cutting tool (130) and a workpiece (W), selecting means (183c) for making it possible to select a combination of each parameter consisting of a number of rotations and a number of vibrations that are obtained on the basis of a vibration frequency dependent on a period, in which an operating instruction can be executed to the vibration means (150) and (160), and the number of rotations or the number of vibrations that is input via the inputting means (182), and setting means for setting each parameter of the number of rotations and the number of vibrations in the control section on the basis of a predetermined combination selected from combinations that are got selectable by the selecting means (183)