Gear Machining with Variable Axis Crossing for Complex Toothing
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Solution Overview
Problem
Existing gear machining methods lack flexibility in modifying gear geometry, particularly in changing the tooth thickness and flank line shape, as the axis crossing angle is predetermined by the helix angle of the tool and workpiece, limiting the ability to produce complex geometries like conical and asymmetrical toothing.
Innovation Solution
The method involves changing the axis crossing angle and center distance during machining, allowing for independent adjustment of tooth thickness and flank line shape, enabling the production of conical and asymmetrical toothing by varying the axis crossing angle and center distance, and correcting the rolling coupling to achieve desired tooth geometry modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the axis crossing angle is predetermined by the helix angle of the tool and workpiece, then the machining process is simple and stable, but the flexibility in modifying gear geometry is limited
Solution Approach 1:
The patent applies the dynamics principle by making the axis crossing angle variable during the machining process. Instead of maintaining a fixed axis crossing angle predetermined by helix angles, the system dynamically adjusts the axis crossing angle according to the workpiece width position, enabling flexible modification of gear geometry including conical and asymmetrical toothing while managing complexity through automated control.
2Adaptability or versatility
If the axis crossing angle is changed during machining, then complex geometries like conical and asymmetrical toothing can be produced, but the machining process becomes more complex
Solution Approach 1:
The system dynamically adjusts the axis crossing angle during the machining process based on the workpiece width position, enabling the production of complex geometries such as conical and asymmetrical toothing. This dynamic control is managed through coordinated movement of the tool and workpiece, integrating the angle variation into the existing machining framework.
Solution Approach 2:
The patent utilizes parameter changes by systematically varying the axis crossing angle as a controllable parameter during machining. This allows the generation of complex gear geometries by modifying the kinematic parameters of the tool-workpiece interaction, specifically by changing the angle between the tool axis and workpiece axis during the generating process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach provides a higher degree of freedom in gear machining, enabling the production of complex geometries such as conical and asymmetrical toothing with precise control over tooth thickness and flank line shape, enhancing the versatility of gear cutting processes.
Implementation Method 1
the rotational movements of the tool and workpiece are coupled in such a way that the toothing of the tool rolls on the toothing of the workpiece, the so-called rolling coupling
Data Source
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AI summary
The present invention shows a method for gear-machining a workpiece using a tool on a gear-cutting machine, the workpiece being machined by a generating method in which the tool for gear-machining rolls on the workpiece with a predetermined center distance and cross-axis angle. The invention is characterized in that the axis crossing angle is changed during the machining of a workpiece.