Cutting Insert Kit with Rear-End Fracture Connections
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Solution Overview
Problem
Existing cutting insert kits are limited in design flexibility due to interconnected cutting inserts, preventing the manufacture of double-sided inserts and limiting cutting edge geometries, with separation methods leaving harmful residue and restricting clamping in tool holders.
Innovation Solution
A cutting insert kit with individual blanks united via a weakened connection member at the rear end, allowing for varied shapes, including double-sided designs, and enabling precise separation with minimal residue, and facilitating clamping in tool holders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cutting inserts are interconnected via connection members at the front end to enable kit formation and sequential feeding, then the kit structure and handling are enabled, but the design flexibility of the cutting insert is significantly limited, preventing double-sided inserts and diverse cutting geometries
Solution Approach 1:
The patent divides the cutting insert into two distinct parts: the active cutting portion (with cutting edge and clearance surface) and the connection portion (with connection member). The connection member is positioned at the rear end of the cutting insert, separating it from the cutting edge area. This segmentation allows the cutting edge to be designed with full geometric freedom while the connection member handles the kit formation and sequential feeding function, thus resolving the contradiction between ease of operation and design flexibility.
2Ease of operation
If connection members are positioned at the front end of cutting inserts to form kits, then kit formation is enabled, but harmful remains of broken connection members interfere with clearance of the cutting insert from the generated surface
Solution Approach 1:
The patent extracts the connection member from the front end of the cutting insert and relocates it to the rear end. This extraction removes the harmful factor (connection member remains) from the vicinity of the cutting edge and clearance surface. When the connection member breaks during separation, the remains are located at the rear end far from the cutting action area, thus eliminating interference with the clearance of the cutting insert from the generated surface while maintaining kit formation functionality.
3Ease of manufacture
If cutting inserts are manufactured with limited geometries to accommodate front-end connection members, then conventional manufacturing is simplified, but the ability to create multi-edge and double-sided inserts is lost
Solution Approach 1:
The patent moves the connection member to the rear end of the cutting insert, utilizing the unused spatial dimension at the back of the insert. This dimensional relocation allows the front end to be fully dedicated to cutting geometries without constraint. The rear end serves as the connection interface, while the front end can be designed with multiple cutting edges, double-sided configurations, or complex chip breaker geometries, all manufacturable by conventional pressing and sintering techniques, thus resolving the contradiction between ease of manufacture and adaptability.
Data Source
Figure 1~4
Figure 5~8
Figure 9~11
AI summary
The invention relates to a cutting insert kit in the form of a body (1) that is integrally manufactured from a brittle and wear-resistant material and comprises a plurality of cutting insert blanks (3), which individually include a chip removing cutting edge (8, 9) and are separable one by one from the kit via indications of fracture (4). According to the invention, the body (1) includes a base part (2) common to all cutting insert blanks (3) and to which the different cutting insert blanks are individually united via an indication of fracture in the form of a weakened connection member (4), which extends between the base part and a rear end of each cutting insert blank.