Machine Tool Cutting Method for Inclined Surface Roughness
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Solution Overview
Problem
Current machine tools face challenges in achieving uniform surface roughness when cutting inclined or curved surfaces, requiring additional grinding steps that increase machining time and complexity.
Innovation Solution
A machine tool with a tool post and moving device that allows the cutting tool to be positioned and angled in the Z, X, and Y directions, using an angle setting mechanism and drive system to match the cutting tool's edge with the workpiece's surface, enabling precise cutting without the need for grinding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the workpiece is pre-machined using a lathe and then finished using a grindstone, then the required surface roughness can be obtained, but the machining time is increased due to the need to unload and re-set the workpiece
Solution Approach 1:
The invention combines the pre-machining and finishing operations into a single cutting process by using a cutting tool with a linear cutting blade that can directly achieve the required surface roughness on inclined surfaces, eliminating the need for separate grinding operations and reducing machining time
Solution Approach 2:
The cutting tool is designed with multi-functional capabilities to perform both roughing and finishing operations on inclined surfaces through a single setup, allowing the tool to adapt to different machining requirements without changing tools or processes
2Manufacturing precision
If the workpiece is rotated on the grinder, then the inclined surface can be ground, but the circumferential velocity varies between inner and outer circumference making it difficult to obtain uniform surface roughness
Solution Approach 1:
The invention replaces the traditional grinding mechanism with a cutting mechanism using a linear cutting blade that moves in a controlled manner relative to the rotating workpiece, eliminating the circumferential velocity variation problem inherent in rotational grinding and achieving uniform surface roughness
Solution Approach 2:
The cutting tool is designed with dynamic movement capabilities in multiple directions (Z direction for axial movement, X direction for radial movement, and Y direction for angular adjustment) to maintain optimal cutting conditions and achieve uniform surface roughness across the inclined surface
3Manufacturing precision
If the cutting tool edge direction is not matched to the inclined surface, then the cutting process is simple, but unwanted vibration occurs and surface roughness is poor
Solution Approach 1:
The invention introduces angular adjustment capability in the Y direction perpendicular to the traditional X-Z tool positioning plane, allowing the cutting tool edge to be oriented at any angle to match the inclined surface geometry, thereby eliminating vibration and improving surface roughness
Data Source
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Figure 3(a)~3(b)
AI summary
[Problem] To easily and reliably machine an end surface of a workpiece while holding the workpiece between a main spindle and a counter spindle. [Solving Means] A machine tool 100 for cutting a workpiece W having an inclined surface Wa (or a curved surface) includes a main spindle 7 that holds and rotates the workpiece W, a moving device (M1, M2, M3) that moves a cutting tool T1 relative to the workpiece W in a direction obtained by combining a Z direction parallel with the axis of the main spindle 7, an X direction that is perpendicular to the Z direction and determines the amount of cutting of the workpiece W, and a Y direction perpendicular to the Z direction and the X direction, and an angle setting mechanism 19 that causes the direction of an edge Ta of the cutting tool T1 to match the inclined surface Wa of the workpiece W by inclining the direction of the edge Ta with respect to the Z direction when seen from the Y direction in a state in which the direction of the edge Ta is inclined with respect to the Z direction when seen from the X direction.