Machine Tool Control for Selectable Rotation-Vibration Cutting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional machine tools face difficulties in selecting and implementing desired vibration conditions due to limitations in determining vibration frequency based on the control device's operational period, restricting flexible machining according to user-inputted rotation or vibration numbers.
Innovation Solution
A control device for machine tools that allows users to input and select combinations of rotation and vibration numbers, displaying graphical representations of vibration operations, and enabling the addition of new vibration conditions, thereby enabling flexible selection and implementation of vibration cutting parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vibration frequency is determined based on control device operational period, then control synchronization is improved, but machining flexibility deteriorates
Solution Approach 1:
The system dynamically adjusts vibration parameters by providing multiple preset combinations of rotation number and vibration number that can be selected based on different machining requirements. The control device operational period constraint is maintained while allowing flexible selection among multiple valid parameter sets, resolving the contradiction between control synchronization and machining flexibility.
Solution Approach 2:
The patent changes the parameter representation from fixed single values to multiple selectable combinations of rotation number and vibration number. This allows the system to maintain control synchronization through the operational period constraint while providing flexibility through parameter selection, directly resolving the technical contradiction.
2Adaptability or versatility
If vibration frequency is automatically corrected based on control period, then control device compatibility is improved, but user selection freedom deteriorates
Solution Approach 1:
The system performs preliminary calculation to generate multiple valid combinations of rotation number and vibration number that satisfy the control device operational period constraint. These pre-calculated combinations are presented to the user for selection, maintaining control device compatibility while preserving user selection freedom through the choice among multiple options.
Solution Approach 2:
The patent introduces an intermediary layer of preset combinations that mediates between the control device's operational period constraint and the user's desired parameters. This intermediary structure automatically ensures compatibility while allowing users to select from multiple valid options, resolving the contradiction between device compatibility and user freedom.
3Manufacturing precision
If multiple vibration condition combinations are provided, then machining precision is improved, but device complexity increases
Solution Approach 1:
The control system segments the vibration conditions into multiple discrete preset combinations of rotation number and vibration number. Each combination represents a valid operating point that satisfies control constraints. This segmentation allows precise selection for different machining scenarios while keeping the control logic manageable through structured parameter sets.
Data Source
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).