Cutting Insert With Alternating Raised And Lowered Corners
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Solution Overview
Problem
Current cutting inserts for side cutters have limitations in increasing the number of usable cutting edges, accommodating grooves of various widths, and effectively controlling chip discharge direction, leading to inefficiencies in groove processing.
Innovation Solution
A cutting insert design featuring two end surfaces with rotationally symmetrical contours, alternating raised and lowered corners, and multiple cutting edge portions with inclined sections to enhance edge utilization and chip control, allowing for processing of various groove widths and improved chip discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cutting inserts are disposed in a staggered configuration with overlapping rotation traces, then groove bottom processing is achieved, but the cutting insert cannot effectively process grooves of various widths
Solution Approach 1:
The cutting insert is divided into multiple independent cutting edges (at least three cutting edges) arranged around the peripheral surface. Each cutting edge can be independently positioned and adjusted, allowing the insert to adapt to different groove widths while maintaining precise cutting performance through selective use of appropriate cutting edges.
2Productivity
If the number of cutting edges is increased, then cost reduction is achieved, but the complexity of the cutting insert design increases
Solution Approach 1:
Multiple cutting edges are integrated into a single cutting insert body that shares a common peripheral surface and mounting structure. The cutting edges are arranged circumferentially and can be indexed or selected sequentially, combining multiple cutting functions into one replaceable insert rather than requiring multiple separate tools or complex mechanisms.
3Productivity
If cutting edges are positioned to maximize edge utilization, then productivity improves, but chip discharge control becomes difficult
Solution Approach 1:
Different regions of the cutting insert are designed with specific local characteristics: cutting edges are positioned and angled optimally for cutting performance, while chip breakers and chip flow channels are strategically located to control chip discharge. The peripheral surface includes specialized features like chip breakers at specific locations to manage chip flow without interfering with the cutting edge positioning and utilization.
Data Source
AI summary
A cutting insert has cutting edge portions at intersection ridge portions between each of two end surfaces at the opposite side to each other and the peripheral side surface. Both the end surfaces are formed to be plane-symmetrical. In each end surface, long side portions and short side portions are alternately connected through raised corners or lowered corners. Each cutting edge portion is formed in regard to the raised corner, and has a corner cutting edge formed in the raised corner, a major cutting edge connected to the corner cutting edge and extending in the long side portion, and a minor cutting edge connected to the corner cutting edge at the opposite side and extending in the short side portion.