3D Curved-Surface Lathe With Three-Axis Cutter Motion
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Solution Overview
Problem
Conventional lathes are limited to machining only two-dimensional curved surfaces with rotary features due to restricted cutter movement, requiring additional polishing steps for better appearance and failing to efficiently machine three-dimensional curved surfaces.
Innovation Solution
A lathe design incorporating a machine support, a rotating work table, a moving device with cross beams and driving mechanisms, and a feeding device that allows movement along the X, Y, and Z axes, enabling the cutter to move continuously in three directions for machining three-dimensional curved surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional lathe is used for machining curved surfaces, then the structure remains simple, but only two-dimensional curved surfaces with rotary features can be machined due to limited cutter movement
Solution Approach 1:
The patent transforms the conventional lathe from a two-dimensional cutting system to a three-dimensional system by adding the ability of the cutter to move along the Y-axis in addition to the traditional X and Z axes. This dimensional expansion enables the machining of complex three-dimensional curved surfaces that were previously impossible with conventional lathes.
Solution Approach 2:
The patent introduces dynamic movement capabilities to the cutter by equipping it with independent driving mechanisms that allow it to move flexibly along three axes (X, Y, Z). This transforms the static cutter position into a dynamic system that can adapt to various three-dimensional curved surface requirements.
2Adaptability or versatility
If a milling cutter is used for machining curved surfaces, then three-dimensional surfaces can be machined, but tracks are formed on the milled surface due to intermitted contact and interrupted milling
Solution Approach 1:
The patent achieves continuous cutting action by coordinating the movement of the cutter along three axes with the rotation of the workpiece. This continuous motion eliminates the intermittent contact and interrupted milling that occur with conventional milling cutters, thereby preventing track formation on the surface and improving overall surface finish.
3Adaptability or versatility
If a milling cutter is used for machining curved surfaces, then three-dimensional surfaces can be machined, but additional polishing steps are required for better appearance
Solution Approach 1:
The continuous cutting action enabled by the three-axis mover device eliminates surface defects such as tracks that would otherwise require additional polishing steps. This integration of machining and finishing capabilities into a single continuous process improves manufacturing efficiency and productivity.
4Device complexity
If a conventional lathe cutter is used, then the structure remains simple, but the cutter movement is limited to two directions
Solution Approach 1:
The patent adds a third degree of freedom to the cutter movement by enabling motion along the Y-axis in addition to the traditional X and Z axes. This dimensional enhancement provides the cutter with complete three-dimensional movement freedom while maintaining reasonable structural complexity through modular design.
Data Source
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AI summary
A lathe includes a machine support, a working table positioned on the machine support, a rotating driver, a moving device, and a feeding device. The rotating driver rotates the work table. The moving device includes at least one cross beam, at least one first driving mechanism, and at least one second driving mechanism. The cross beam is movably positioned on the machine support above the working table. The feeding device is movably positioned on the at least one cross beam, and includes a feeding driving mechanism and a cutter. The first driving mechanism drives the cross beam to move along a first direction, and the second driving mechanism drives the feeding device to move along a second direction at about ninety degrees from the first direction. The feeding mechanism drives the cutter to move backwards and forwards along a third direction perpendicular to the first and second direction.