Tangential Cutting Insert Locking Structure for Eight Working Positions
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Solution Overview
Problem
Existing double-sided tangential cutting inserts lack versatility and stability in various working positions due to limited configurations and inadequate abutment surface arrangements, which affects their performance in different cutting force directions and loads.
Innovation Solution
A double-sided tangential cutting insert with eight working positions, featuring a unique arrangement of abutment surfaces in a grid-like pattern with inclined surfaces forming a double V-shape, allowing for strong and reliable locking in different insert seats, and adaptable to various cutting force directions through adjustable tangential support surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a double-sided tangential cutting insert is designed with limited configurations, then the device complexity is reduced, but the versatility and adaptability to different cutting force directions deteriorates
Solution Approach 1:
The cutting insert is divided into multiple independent abutment surfaces (first group on first end face, second group on second end face) that can be selectively engaged with different tangential support surfaces in the insert seat. This segmentation allows the insert to adapt to various cutting force directions without increasing overall configuration complexity.
Solution Approach 2:
The insert seat is designed with multiple tangential support surfaces that can accommodate different groups of abutment surfaces on the cutting insert. This multi-functionality allows the same insert seat structure to work with different insert configurations and cutting directions, achieving versatility without proportionally increasing device complexity.
2Reliability
If abutment surfaces are arranged in a grid-like pattern with inclined surfaces forming a double V-shape, then the locking stability and reliability are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The abutment surfaces are designed with asymmetric inclined configurations forming a double V-shape pattern. This asymmetric geometry provides inherent mechanical advantage for locking stability, where the inclined surfaces naturally guide and secure the insert in the seat. The asymmetric design achieves superior reliability without requiring extremely tight manufacturing tolerances because the geometry itself provides self-centering and locking characteristics.
3Productivity
If the cutting insert is designed for eight different working positions, then the productivity and efficiency are improved, but the device complexity increases
Solution Approach 1:
Multiple cutting edges and abutment surfaces are merged into a single integrated cutting insert body. The insert combines eight different working positions, multiple cutting edges, and multiple abutment surface groups into one component that can be mounted in various positions by rotating the insert on the same seat, rather than requiring separate inserts or complex adjustment mechanisms.
Data Source
Figure 1a~1b
Figure 1c~1d
Figure 1f~1i
AI summary
A double-sided tangential cutting insert with eight different working positions comprising: - two opposite end faces (2, 3) serving as leading and trailing faces of the cutting insert; - two opposite major side faces (5, 6); - two opposite minor side faces (7, 8); - a through hole (14) extending between the two major side faces (5, 6); - cutting edges distributed along a periphery of each end face (2, 3); - four abutment surfaces (41-44) arranged on each end face in a grid-like pattern with two first arrays, each of which comprising two consecutive abutment surfaces and extending between the two major side faces (5, 6), and two second arrays (A2), each of which comprising two consecutive abutment surfaces and extending between the two minor side faces (7, 8), each abutment surface being inclined inwards in the cutting insert such that each two consecutive abutment surfaces in each array (A1, A2) are inclined towards each other.