Dual-Receptacle Cutting Insert Holder for Longer Edge Life
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Solution Overview
Problem
The high cost and short service life of diamond cutting edges in machining tools, particularly for precision machining of spectacle lenses, result in high tool and manufacturing costs due to rapid wear.
Innovation Solution
A tool with a double cutting insert holder featuring two intersecting center axes allows for sequential use of two cutting insert receptacles, enabling the cutting insert to be repositioned and reused, effectively doubling its service life by pivoting the cutting edge to utilize a fresh portion of the cutting edge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If diamond cutting edges are used for high-precision machining, then machining precision is improved, but service life deteriorates due to rapid wear
Solution Approach 1:
The cutting insert is divided into multiple usable cutting edges (first cutting edge and second cutting edge) that can be sequentially utilized. After the first cutting edge wears out, the cutting insert can be rotated or repositioned to use the second cutting edge, effectively segmenting the usage lifecycle and extending total service life while maintaining precision machining capabilities
2Manufacturing precision
If diamond cutting edges are used for high-precision machining, then machining precision is improved, but tool cost deteriorates due to high expense and short service life
Solution Approach 1:
The cutting insert incorporates multiple cutting edges in a single component, allowing one expensive diamond cutting insert to serve multiple purposes and extend its operational life through sequential use of different edges, thereby amortizing the high cost over a longer period and reducing overall tooling expenses
3Productivity
If cutting insert is repositioned to extend service life, then productivity is improved, but positioning precision deteriorates due to potential misalignment
Solution Approach 1:
Multiple cutting edges are merged into a single cutting insert component with integrated positioning features. The holder and cutting insert incorporate matching geometric elements (such as V-grooves, flats, or keyed interfaces) that ensure automatic self-alignment when the cutting insert is repositioned, eliminating misalignment issues and maintaining machining precision while extending service life through multi-edge utilization
Data Source
AI summary
Tool for machining a workpiece, comprising: a cutting insert; and a cutting insert holder comprising a first cutting insert receptacle extending along a first center axis and a second cutting insert receptacle extending along a second center axis, into which the cutting insert is selectively receivable; wherein the first and second center axes intersect at an imaginary crossing point located in a region that is covered by the cutting insert when the cutting insert is received in the first cutting insert receptacle as well as when the cutting insert is received in the second cutting insert receptacle.