Polygon Turning Axis Control for Cutting Tool Runout Correction
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Solution Overview
Problem
Existing polygon turning methods suffer from precision issues due to manual attachment of cutting tools, which can cause misalignment and deformation, leading to unsuitable high-precision processing.
Innovation Solution
A control device and system that adjust the motion of the workpiece and tool axes to correct misalignment of cutting tools in the radial and rotational directions using pulse generation based on deviation measurements, allowing for improved precision without tool replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual attachment of cutting tools is used, then ease of operation is improved, but manufacturing precision deteriorates due to misalignment and deformation
Solution Approach 1:
The control device measures the actual position of each cutting tool relative to the tool center and uses this feedback information to calculate and apply position corrections. The position correction value is determined based on the measured deviation, and the control device adjusts the tool axis motion to compensate for misalignment, thereby maintaining high manufacturing precision while keeping the manual attachment operation simple.
2Manufacturing precision
If positioning bolts and fixing bolts are provided to enhance cutting tool aligning function, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The invention replaces the mechanical alignment system (positioning bolts and fixing bolts) with a control-based system. Instead of using additional mechanical components to enforce alignment, the control device measures the actual tool positions and uses pulse signals to adjust the tool axis motion, thereby achieving precise alignment without increasing mechanical complexity.
3Manufacturing precision
If polygon turning is used for high-precision processing, then manufacturing precision is improved, but processing time increases compared to conventional methods
Solution Approach 1:
The invention performs position measurement and correction calculations in advance before the actual polygon turning operation. By measuring the tool positions and determining correction values beforehand, the system eliminates the need for slow iterative adjustments during processing, thereby achieving high precision without significantly increasing processing time.
Solution Approach 2:
The control device changes the motion parameters of the tool axis based on the measured tool positions. By dynamically adjusting the tool axis position using calculated correction values, the system compensates for tool misalignment and achieves high-precision polygon turning while maintaining efficient processing speeds.
Data Source
AI summary
A control device that controls polygon turning to simultaneously rotate a workpiece and a tool and form a polygon on a surface of the workpiece acquires information on misalignment in the radial direction of a cutting tool attached to a tool body and generates pluses to correct the misalignment in the radial direction of the cutting tool. Furthermore, the control device outputs the pulses to an X-axis servo motor and moves a tool in the opposite direction to the misalignment in the radial direction of the cutting tool. Accordingly, the misalignment in the radial direction of the cutting tool is corrected, and thereby the precision of the polygon turning is improved.