Cutting Insert Curved Ramps Resilient Clamping
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Solution Overview
Problem
Existing cutting tools for grooving and parting lack an effective means to resiliently clamp cutting inserts within holder blades, often requiring additional mechanisms for secure retention and easy insertion/removal, which can lead to instability and reduced tool longevity.
Innovation Solution
A cutting tool design featuring a holder blade with a resiliently displaceable upper clamping jaw relative to a lower base jaw, utilizing curved ramps and recessed surfaces to clamp the cutting insert, allowing for secure clamping and controlled insertion/removal without additional displacement means, enhancing resilience and reducing the risk of tool damage from metal chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resiliently displaceable upper clamping jaw is used to clamp the cutting insert, then the clamping force and retention security are improved, but the complexity of the holder blade structure increases
Solution Approach 1:
The upper clamping jaw is designed to be resiliently displaceable relative to the lower base jaw, allowing dynamic adjustment and application of clamping force. This dynamic feature enables the jaw to resiliently displace during insert insertion and provide secure retention during operation, resolving the contradiction between reliability and structural simplicity.
Solution Approach 2:
The holder blade is segmented into distinct functional components: the lower base jaw providing stable support and the upper clamping jaw providing resilient clamping force. This segmentation allows each component to be optimized for its specific function while working together to achieve secure retention without excessive overall complexity.
2Ease of operation
If curved ramps are provided on the insert lower component surfaces, then the ease of insertion and controlled removal are improved, but the manufacturing complexity of the insert increases
Solution Approach 1:
Curved ramps are provided on the insert lower component surfaces instead of flat surfaces. These curved surfaces facilitate smooth engagement with the holder blade during insertion and enable controlled removal by reducing friction and guiding the insertion/removal motion, thereby improving ease of operation despite increased manufacturing complexity.
3Device complexity
If the upper clamping jaw is resiliently displaceable solely by urging the cutting insert into the insert receiving pocket, then the device simplicity is improved, but the clamping force control precision may be worsened
Solution Approach 1:
The clamping mechanism is designed to be self-actuating, where urging the cutting insert into the insert receiving pocket automatically causes resilient displacement of the upper clamping jaw. The insert itself serves as the actuating force, eliminating the need for separate displacement means and simplifying the overall device while maintaining adequate clamping force control through the resilient properties of the jaw.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides improved resilience for clamping, reduced risk of tool damage, and easier controlled insertion and removal of cutting inserts, extending tool life and maintaining stability during operations.
Implementation Method 1
the upper clamping jaw being resiliently displaceable relative to the lower base jaw
Implementation Method 2
at least the insert lower component surface closest to the operative cutting portion has an insert inner curved ramp, and at least the insert lower component surface furthest from the operative cutting portion has an insert outer curved ramp
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
A cutting tool (20,120) used for grooving and turning operations where a cutting insert (22,122) is resiliently securable in a holder blade (24). The cutting insert (22,122) includes an insert central lower surface (42) located between, and recessed with respect to, two insert lower component surfaces (38), each having an insert lower abutment surface (40). At least one of the two insert lower component surfaces (38) includes an insert inner curved ramp (46) extending from its insert lower abutment surface (40) to the adjacent insert lower intermediate surface (44) and at least the other of the two insert lower component surfaces (38) includes an insert outer curved ramp (48) extending from its insert lower abutment surface (40) to an adjacent end surface (32).