Cutting Insert Protuberance Mounting for Versatile Indexing
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Solution Overview
Problem
Existing internal grooving cutting tools face limitations in securely mounting cutting inserts, accommodating left or right handed inserts, and allowing 180° indexing without modifying the insert holder, and providing adequate resistive and clamping forces.
Innovation Solution
A cutting insert with two insert protuberances and an insert holder with corresponding recesses, featuring wedge angles and specific distance relationships, allowing secure retention and support through a retaining screw, enabling left or right handed inserts and 180° indexing without holder reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple abutment regions are used to secure the cutting insert, then the mounting security is improved, but the ability to reposition and accommodate left and right handed inserts is limited
Solution Approach 1:
The coupling mechanism employs asymmetric protuberances on the cutting insert that correspond to asymmetric recesses in the insert holder. This asymmetric design allows the insert to be securely mounted while enabling repositioning and accommodation of both left and right handed inserts without modifying the holder, as the asymmetric features guide proper orientation and engagement.
2Reliability
If a secure coupling mechanism is implemented, then the mounting stability is improved, but the complexity of the coupling mechanism increases
Solution Approach 1:
The coupling mechanism is segmented into distinct protuberance features on the cutting insert and corresponding recesses in the insert holder. This segmentation allows each feature to be independently designed and manufactured, simplifying the overall coupling mechanism while providing secure mounting through the interaction of these segmented elements.
Solution Approach 2:
The coupling mechanism merges multiple functions into a single integrated design: the protuberances and recesses simultaneously provide positioning, securing, and guidance functions. This merging reduces the need for separate components and simplifies the overall coupling mechanism while maintaining mounting stability.
3Manufacturing precision
If the insert holder is designed for specific insert orientations, then the mounting precision is improved, but the versatility for different insert types is reduced
Solution Approach 1:
The insert holder is designed with universal coupling features (recesses) that can accommodate multiple insert types and orientations including left and right handed inserts. The recesses are shaped to provide precise positioning while being versatile enough to work with different insert configurations without requiring holder reconfiguration.
Data Source
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AI summary
A cutting insert for mounting on an insert holder of a cutting tool. The cutting insert has a rear surface with two protuberances. The insert holder has a base surface with two recesses. Three abutment regions are formed on the side surfaces of the two protuberances and the two recesses when the cutting insert is releasably retained in the insert holder with a retaining screw. Two further abutment regions are formed between the two holder recess lower surfaces and the two insert protuberance upper surfaces.