Rotational Axis Angle Selection to Avoid Tool Interference
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Solution Overview
Problem
Conventional numerical control devices face interference issues between tools and objects when machining inclined surfaces due to the selection of suboptimal angle combinations for rotational axes.
Innovation Solution
A control device and system that includes a calculation unit to determine multiple angle combinations, a selection unit to choose the optimal combination, and a control unit to adjust the rotational axes, preventing tool interference by ensuring the tool forms a predetermined angle with the inclined surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the conventional numerical control device selects the angle combination with smaller movement amount of rotational axes, then the movement amount of rotational axes is reduced, but interference occurs between the tool and other objects such as workpiece or jig
Solution Approach 1:
The invention introduces a new selection criterion dimension beyond just movement amount. Instead of solely minimizing rotational axis movement, the system evaluates multiple angle combinations based on both movement amount and interference occurrence, selecting the optimal combination that balances these two factors.
Solution Approach 2:
The system changes the selection parameter from a single criterion (movement amount) to multiple criteria (movement amount and interference check). By evaluating angle combinations based on both parameters, the system identifies the optimal combination that prevents interference while maintaining efficient movement.
2Manufacturing precision
If multiple angle combinations are calculated for rotational axes to make the tool perpendicular to the inclined surface, then the precision of tool orientation is improved, but the complexity of selecting the appropriate combination increases
Solution Approach 1:
The system performs preliminary calculation of multiple angle combinations before actual machining. By pre-calculating and storing valid angle combinations that ensure proper tool orientation, the system eliminates the need for complex real-time selection during machining, reducing operational complexity.
Solution Approach 2:
The invention replaces complex manual selection or heuristic-based selection with an automated determination mechanism. The control device automatically determines the appropriate angle combination based on pre-established criteria, substituting mechanical decision-making processes with computational logic.
Data Source
AI summary
The present invention provides a control device, a control system, and a program that make it possible to prevent a tool etc. from causing interference when changing the direction of the tool with reference to an inclined surface. A control device according to an embodiment comprises a calculation unit, a selection unit, a control unit, and a determination unit. The calculation unit calculates a plurality of combinations of angles of a plurality of rotation shafts. The selection unit selects one combination from among the plurality of combinations. The control unit controls the plurality of rotation shafts and operates the plurality of rotation shafts such that the combination of angles thereof is the combination, in order to change the orientation of the tool, which is in a prescribed orientation. The determination unit determines one combination for use in actual operation from among the plurality of combinations.