Indexable Cutting Insert Layout for Deep Cutting and Stable Clamping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing indexable cutting inserts face limitations in achieving optimal cutting depth due to the design of cutting edges and clamping mechanisms, which can lead to reduced effectiveness in metalworking operations.
Innovation Solution
The design of an indexable cutting insert with a peripheral surface featuring spaced-apart cutting edges and a clamping hole outside the cutting region, allowing for a deeper cutting depth by utilizing a clamping mechanism that does not extend past an imaginary arc, thereby maintaining the insert's operational effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clamping mechanism extends past the cutting region to secure the insert, then the mounting stability is improved, but the cutting depth is reduced
Solution Approach 1:
The insert is divided into distinct functional regions: a cutting region with cutting edges and a clamping region with clamping holes. This segmentation allows the clamping mechanism to be positioned in the clamping region without interfering with the cutting region, thereby maintaining both mounting stability and cutting depth. The clamping holes are specifically located in the clamping region to receive clamping elements that secure the insert to the tool body without extending into the cutting path.
Solution Approach 2:
The clamping function is extracted from the cutting region and relocated to a dedicated clamping region. By removing the clamping holes from the cutting region and placing them exclusively in the clamping region, the design eliminates the interference between clamping mechanisms and cutting operations, enabling the cutter to achieve maximum cutting depth while maintaining secure mounting.
2Productivity
If the cutting edges are positioned to maximize cutting depth, then the productivity is improved, but the structural stability of the insert is reduced
Solution Approach 1:
The insert geometry is segmented into a cutting region containing the cutting edges and a clamping region containing the clamping holes. This spatial segmentation allows the cutting edges to be positioned optimally for maximum cutting depth while the clamping region provides structural reinforcement. The clamping region acts as a support zone that enhances insert stability without compromising the cutting edges' position or the overall cutting depth capability.
Solution Approach 2:
Different regions of the insert are given different functional qualities: the cutting region is designed with geometry optimized for cutting performance and depth, while the clamping region is designed with features (clamping holes) that provide structural stability and mounting security. This local differentiation of qualities allows each region to optimize its specific function without compromising the other.
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 2A~2C
AI summary
The present invention relates to an indexable cutting insert (14) comprising parallel insert first and second sides (22A, 22B) connected by an insert peripheral surface (24) which extends peripherally around the cutting insert (14), the insert peripheral surface (24) comprising cutting edges (18) which are spaced-apart and extend from the insert first side (22A) to the insert second side (22B), the cutting insert further comprising at least one clamping hole (26), the clamping hole (26) comprising at least a clamping hole portion (48) located in an associated insert clamping region (CL) which is defined outside of an associated cutting region (CU) of the cutting insert (14), a width direction (DW) is perpendicular to the insert first and second sides (22A, 22B), wherein each of the cutting edges (18) are wider along the width direction (DW) than any other portion of the cutting insert (14), wherein at least the insert first side surface (22A) further comprises at least one side seating surface (32) being outwardly-spaced in the width direction (DW) from the insert first side surface (22A), though not extending past the cutting edges in the axial direction along an index axis (CI) of the cutting insert (14).