Cutting Insert Locating Portion for Lateral Stability
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Solution Overview
Problem
Existing cutting tools face lateral instability due to open slots in the clamping region, which weakens the structure and restricts the minimum groove diameter, and convex-concave mating surfaces provide insufficient retention and restrict tool size.
Innovation Solution
A cutting insert with a locating portion featuring protruding rear and intermediate abutment members on a common oblique conical surface, secured in a socket with complementary abutment surfaces, providing lateral stabilization and secure retention without open side walls, allowing for larger groove diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If open slots are used in the clamping region to retain the cutting insert, then the insert can be retained in the tool, but the structural strength is weakened and lateral stability is poor
Solution Approach 1:
The clamping region is divided into multiple segments including an upper clamping jaw, a curved lower base jaw, and side clamping jaws that can move independently. This segmentation allows each component to perform specific functions while maintaining overall structural integrity through the modular design.
Solution Approach 2:
The solution transitions from a two-dimensional slot design to a three-dimensional enclosed structure by adding side clamping jaws that move in and out to clamp the insert from the sides, creating a box-like retention structure that provides strength in multiple directions.
2Stability of the object's composition
If convex-concave mating surfaces are provided on both upper and lower surfaces of the clamping portion, then lateral stability is improved, but the minimum size of the cutting insert is restricted
Solution Approach 1:
The convex-concave mating surfaces are replicated on the side clamping jaws and corresponding surfaces on the insert, creating multiple identical engagement points that distribute the lateral stabilization function across different locations rather than requiring large surfaces on the top and bottom only.
Solution Approach 2:
The convex-concave mating surfaces are applied locally only where needed for lateral stabilization on the side clamping jaws and insert sides, rather than covering the entire clamping surfaces, allowing the insert to maintain smaller overall dimensions while still achieving adequate lateral stability.
3Strength
If side clamping jaws are added to close the slot, then structural strength is improved, but device complexity increases
Solution Approach 1:
The side clamping jaws are merged with the upper and lower clamping jaws to form an integrated clamping assembly that acts as a unified structure. This merging reduces the number of separate components and simplifies the overall design while achieving the goal of closing the slot for improved structural strength.
Solution Approach 2:
The side clamping jaws serve multiple functions: they close the slot to improve structural strength, provide convex-concave mating surfaces for lateral stabilization, and work in coordination with the upper and lower jaws to secure the insert. This multi-functionality reduces the need for separate components for each function.
Data Source
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AI summary
A cutting tool has a cutting insert releasably retained in an insert pocket. The insert pocket includes a supporting portion having support surfaces and a clamping portion including a socket having a socket wall, the socket extending rearwardly from the supporting portion. The cutting insert has a cutting portion with front abutment surfaces and an elongated locating portion extending rearwardly from the cutting portion. The cutting insert is retained in the insert pocket with the front abutment surfaces abutting the support surfaces and with the locating portion located in the socket with abutment surfaces of the locating portion in abutment with the socket wall.