Gear Machining with Fixed Dual Tools and Workpiece Repositioning
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Solution Overview
Problem
Existing gear machining devices require complex mechanical sliding devices to move tools along the rotation axis, increasing cost and complexity.
Innovation Solution
A gear machining device with immovably fixed tools and a control unit that adjusts the position and rotation of the workpiece support unit to enable meshing with multiple tools without a sliding device, using a virtual tool setup for initial positioning and iterative adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mechanical sliding device is used to move the tool support unit along the rotation axis to enable tool meshing, then the device can machine with multiple tools, but the overall structure becomes complicated and cost increases
Solution Approach 1:
Instead of moving the tool support unit along the rotation axis to enable tool meshing, the invention inverts the approach by making the workpiece support unit movable relative to the fixed tool support unit. This allows multiple tools to mesh with the workpiece without requiring complex sliding mechanisms for the tool support, thereby reducing device complexity while maintaining the ability to machine with multiple tools.
Solution Approach 2:
The invention extracts the sliding mechanism requirement from the tool support unit and relocates it to the workpiece support unit. By making the workpiece support unit movable in the axial direction of the gear to be machined, the system achieves tool switching capability without modifying the tool support unit's structure, thus simplifying the overall device configuration.
2Ease of operation
If a mechanical sliding device is used to support and move the tool support unit, then tool positioning is enabled, but the device cost increases
Solution Approach 1:
The invention replaces the mechanical sliding device with a control system that coordinates the movement of the workpiece support unit. Instead of using complex mechanical mechanisms to position tools, the system uses controlled movement of the workpiece support unit to achieve tool positioning, thereby reducing manufacturing cost while maintaining positioning capability.
3Adaptability or versatility
If two tools are installed side by side in the tool support unit housing, then different types of workpieces can be machined, but a sliding device is required to move one tool toward the workpiece
Solution Approach 1:
Instead of moving the tool support unit to position different tools for machining, the invention inverts the approach by keeping the tool support unit fixed and moving the workpiece support unit. This allows different tools installed side by side to mesh with the workpiece through the movement of the workpiece support unit, eliminating the need for sliding devices while maintaining the ability to machine different types of workpieces.
Data Source
AI summary
[Problem] To provide a gear machining device enabling machining by a plurality of tools with a simple configuration. [Solution] A gear machining device according to the present invention includes: a base; a tool support unit that is disposed on the base, and has internal gear-shaped first and second tools; a workpiece support unit that is disposed on the base, and rotatably supports a gear to be machined; and a control unit that controls driving of the tool support unit and the workpiece support unit, the first tool and the second tool are immovably fixed at an interval in an axial direction of each of the first tool and the second tool; each of the first and second tools machines while meshing with the gear to be machined, the workpiece support unit is relatively movable with respect to the tool support unit in a first direction along an axial direction of the gear to be machined, the workpiece support unit is relatively movable with respect to the gear to be machined in such a second direction as to approach and separate from the first and second tools, the tool support unit is rotatable around a vertical axis extending vertically on the base, and the control unit sets one of the first tool and the second tool as a tool for machining that machines the gear to be machined, and machines the gear to be machined after moving the tool for machining to such a position that the tool for machining meshes with the gear to be machined.