Cut-Off Tool Edge Geometry for Swarf Evacuation and Surface Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cutting-off processing tools can damage the surface of workpieces during processing due to swarf contact.
Innovation Solution
A cutting-off processing tool design with a cutting edge configuration where the second front end is lower than the first front end, facilitating swarf evacuation along a direction parallel to the cutting-off direction, and varying the widths and inclinations of cutting edge portions to manage stress and improve evacuation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional cutting edge configuration is used, then cutting-off processing can be performed, but swarf contacts the processed surface causing damage
Solution Approach 1:
The cutting edge is designed with asymmetric geometry where the first cutting edge portion has a first inclination angle and the second cutting edge portion has a second inclination angle that is smaller than the first. This asymmetric configuration creates an evacuation path that directs swarf away from the processed surface, preventing contact damage while maintaining effective material removal
Solution Approach 2:
The invention introduces a dimensional aspect by creating a height difference between the first front end and second front end of the cutting edge. The second front end is positioned lower than the first front end, establishing a three-dimensional evacuation path that guides swarf along a trajectory parallel to the cutting-off direction, away from the processed surface
2Object-affected harmful factors
If the cutting edge is designed to evacuate swarf effectively, then surface damage is reduced, but the cutting edge geometry becomes more complex
Solution Approach 1:
The cutting edge is segmented into two distinct portions: a first cutting edge portion with a first inclination angle and a second cutting edge portion with a second inclination angle. Each portion serves a specific function in the swarf evacuation process, with the segmentation allowing optimized geometry for damage prevention while maintaining manufacturing feasibility
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A cutting-off processing tool has an upper surface, a front surface, a rear surface, a first side surface, a second side surface, and a reference surface. The upper surface includes a first breaker projection face extending along the first side surface, a second breaker projection face extending along the second side surface, and a rake face located between the first breaker projection face and the second breaker projection face in top view. In a direction from the rear surface to the front surface, a first front end of the first breaker projection face is located ahead of a second front end of the second breaker projection face. A cutting edge has a first cutting edge portion and a second cutting edge portion. In a direction perpendicular to the reference surface, the second breaker projection face is lower than the first breaker projection face, and a boundary between the first cutting edge portion and the second cutting edge portion is lower than the second breaker projection face.