NC Tool Retreat Angle Control Between Recessed Parts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing numerical control devices prolong the moving path of processing tools when applying internal surface processing to recessed parts due to the stop position or orientation of the processing tool being set in the same direction, necessitating a move that does not include the same vector component as the path to the next command point.
Innovation Solution
A numerical control device and method that set the stop angle and retreat path of the processing tool to prevent a prolonged moving path by ensuring the cutting edge direction does not have a vector component aligned with the moving direction, using a tool retreat position setting unit, cutting edge stop angle setting unit, and tool retreat path setting unit to optimize the tool's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the stop position or orientation of the processing tool is set in the same direction to simplify processing commands, then the ease of operation is improved, but the moving path of the processing tool is prolonged
Solution Approach 1:
The patent applies dynamics by making the stop angle of the processing tool variable rather than fixed. The control device calculates and sets different stop angles based on the relative positions of consecutive recessed parts, allowing the tool orientation to adapt dynamically to the processing path requirements. This resolves the contradiction by enabling both simplified command structure and optimized moving path length.
Solution Approach 2:
The patent changes the parameter of stop angle from a constant value to a variable value that depends on the processing path geometry. By calculating the stop angle based on the positions of current and next recessed parts, the system optimizes the tool's final orientation to minimize the moving path length while maintaining ease of operation through automated parameter adjustment.
2Productivity
If the processing tool retreats from the recessed part and moves along a continuous path to the next command point, then the productivity is improved, but the device complexity increases
Solution Approach 1:
The control device performs self-service by automatically calculating the optimal stop angle and retreat path based on the processing program and recessed part positions. This eliminates the need for manual intervention in path optimization while maintaining improved productivity through continuous tool movement. The system serves itself by generating optimized control commands without additional external complexity.
Data Source
AI summary
A numerical control device includes a main control unit, a processing program reading unit, and a tool moving path setting unit that sets moving paths of a processing tool between a plurality of recessed parts. The tool moving path setting unit includes: a tool retreat position setting unit that sets a retreat position to be assumed by the processing tool upon completion of internal surface processing; a cutting edge stop angle setting unit that sets a stop angle of a cutting edge, on the basis of a moving direction toward a next recessed part; and a tool retreat path setting unit that sets a retreat path of the processing tool. The stop angle is set in such a manner that a pointing direction of the cutting edge does not have a moving vector component oriented in a same direction as the moving direction.