Lathe Scraping Machine Tool for Metallic Housing Machining
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Solution Overview
Problem
Current machining methods for metallic members, such as those used in electronic device housings, face inefficiencies due to track formation during milling and incompatibility of lathe processes for non-circular surfaces and peripheral sidewalls with corners, requiring additional machining steps.
Innovation Solution
A machine tool equipped with a lathe feeding mechanism and a scraping feeding mechanism, capable of three-dimensional movement along Cartesian coordinates, which allows for simultaneous machining of top portions and peripheral sidewalls using a lathe tool and scraping cutter, respectively, to address the inefficiencies and incompatibilities of existing methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a milling process is employed to machine the metallic housing, then the top portion can be machined, but tracks occur on the top portion reducing appearance quality and requiring additional machining processes
Solution Approach 1:
The patent combines the lathe process and milling process into a single integrated machining system. The machine tool includes both a lathe tool for rotational machining and a milling cutter for linear machining, allowing both processes to be performed in one setup without transferring the workpiece, thereby eliminating tracks while maintaining high surface finish quality and improving productivity
Solution Approach 2:
The machine tool is designed with multi-functionality to perform both lathe and milling operations. The system can switch between rotational machining for the top portion and linear machining for peripheral sidewalls using the same workholding setup, eliminating the need for additional machining processes and improving overall efficiency
2Productivity
If a lathe process is adopted to machine the metallic member, then circular surfaces can be machined efficiently, but it is difficult to machine non-circular surfaces and peripheral sidewalls with corners
Solution Approach 1:
The machine tool integrates both lathe and milling capabilities in one system. The lathe tool handles circular top portions with high efficiency, while the milling cutter handles non-circular peripheral sidewalls and corners. Both operations are performed in the same setup without repositioning the workpiece, achieving both productivity and adaptability
Solution Approach 2:
The system transitions from purely rotational machining to include linear machining capabilities. By adding the milling cutter that moves in linear axes, the system can machine non-circular surfaces and complex geometries that cannot be achieved with rotational machining alone, while maintaining the efficiency benefits of the lathe process for suitable features
3Manufacturing precision
If additional machining processes are added to machine the metallic housing, then all surfaces including peripheral sidewalls can be machined, but the machining time and productivity are reduced
Solution Approach 1:
The patent merges multiple machining processes (lathe and milling) into a single integrated operation. The machine tool can machine the top portion and peripheral sidewalls in one continuous process without transferring the workpiece or adding separate machining steps, thereby achieving complete machining coverage while minimizing total machining time
Solution Approach 2:
The workpiece is positioned and clamped in the optimal location before machining begins. The machine tool is configured to access both the top portion and peripheral sidewalls from this single setup, eliminating the need for repositioning or additional fixturing operations that would consume time
Data Source
AI summary
A method for machining a metallic member to provide a finished appearance, the method uses a lathe and a scraping process. A metallic member includes a top portion and a peripheral sidewall, is positioned on the worktable. The worktable is rotated with the metallic member, the lathe tool reciprocates to machine the top portion of the rotary metallic member circumferentially. The lathe tool is moved along a predetermined path relative to the worktable by the moving device to machine curved surfaces of the top portion of the metallic member. The scraping cutter is moved to contact the peripheral sidewall of the metallic member. The scraping cutter is moved along a predetermined path, and the scraping cutter is fed the metallic member to achieve the required shape and finish.