Cutting Tool Upper Wall Overhang for Insert Support
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Solution Overview
Problem
Conventional cutting edge-replaceable cutting tools face limitations in increasing the strength of the tool head without restricting the design freedom, as the strength is maintained by predetermined ratios between components, reducing the flexibility in tool design.
Innovation Solution
The cutting edge-replaceable cutting tool incorporates an upper wall portion that overhangs the insert mounting seat, increasing the thickness of the back metal and providing additional support, allowing for increased strength and rigidity while maintaining design flexibility by allowing more insert mounting seats and higher feed speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the back metal is increased to maintain tool head strength, then the strength increases, but the degree of freedom in design is reduced due to predetermined ratio requirements
Solution Approach 1:
The invention changes the parameter control approach from fixed ratios (thickness of back metal to thickness of insert) to a flexible geometric configuration (upper wall portion overhanging the insert mounting seat). This allows the back metal thickness to be increased for strength while maintaining design freedom, as the upper wall portion can be configured in various ways to achieve the desired overhang without being constrained by predetermined ratio relationships.
2Strength
If the tool head strength is increased by conventional methods, then the strength improves, but the device complexity increases due to additional ratio constraints
Solution Approach 1:
The invention segments the tool head structure by introducing an upper wall portion that overhangs the insert mounting seat. This segmentation allows the back metal thickness to be independently increased for strength without being constrained by overall tool head geometry ratios. The upper wall portion acts as a separate structural element that provides the necessary support while simplifying the design constraints compared to conventional ratio-based approaches.
Data Source
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AI summary
The present invention provides a cutting edge-replaceable cutting tool (10) including a tool body (12), and a cutting insert (14) is removably installed on the tool body (12). The cutting tool-replaceable cutting tool (10) includes an insert mounting seat (16) formed on the tool body (12) and on which the cutting insert (14) is mounted, and a upper wall portion (18) formed integrally with the tool body (12) and overhanging the insert mounting seat (16).