Cutting Insert Land Geometry for Feed-Direction Chip Flow
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Solution Overview
Problem
Existing cutting tools face challenges in efficiently guiding and discharging chips during the machining process, leading to potential damage to the machined surface due to improper chip flow.
Innovation Solution
The cutting insert design features a land surface with inclined first, second, and third land surfaces, including a concave third land surface, which guides chips towards the feed direction of the cutting tool, reducing the likelihood of chip clogging and surface damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cutting tools are used, then the cutting process can be performed, but chip discharge performance is poor and surface damage may occur
Solution Approach 1:
The land surface is divided into multiple segmented land surfaces (first, second, third land surfaces) with different orientations and functions. Each segment guides chips in a specific direction, collectively achieving controlled chip flow and preventing surface damage through distributed chip management rather than a single land surface approach
Solution Approach 2:
The invention introduces a multi-dimensional land surface configuration where land surfaces are arranged at different angles and positions relative to the cutting edge. The third land surface extends in a direction different from the first and second land surfaces, creating a three-dimensional chip guidance system that controls chip flow in multiple directions simultaneously
2Ease of operation
If simple land surfaces are used, then the structure is simple, but chip flow control is insufficient
Solution Approach 1:
Each land surface is designed with specific local characteristics: the first land surface has a first orientation, the second land surface has a second orientation, and the third land surface has a third orientation different from the first two. This local differentiation allows each segment to perform specialized chip guidance functions, achieving superior overall chip flow control through localized optimization rather than uniform design
Data Source
AI summary
A cutting insert in a non-limiting embodiment may include a first surface, a second surface, a third surface and a land surface. The first surface may include a first corner and a first side extended from the first corner. The land surface may be located between the first surface and the third surface and inclined relative to the first surface and the third surface. The land surface may include a first land surface located along the first corner, a second land surface located along the first side, and a third land surface having a concave shape which is adjacent to the second land surface and located further away from the first land surface than the second land surface.