Cutting Tool With Inclined Bore Attachment Elements
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Solution Overview
Problem
Conventional cutting tools with replaceable inserts face limitations in securing the inserts effectively, leading to potential detachment during operation and reduced tool lifespan due to the design of the tool body and insert materials.
Innovation Solution
A cutting tool design featuring a cylindrical tool body with inclined bores and attachment elements that securely engage the replaceable cutting insert, providing enhanced retention force and ease of replacement by aligning the bores and apertures at specific angles to ensure stable attachment and prevent removal during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cutting tools use replaceable cutting inserts with standard attachment elements, then the cutting insert can be replaced after wear, but the retention force is insufficient leading to potential detachment during operation
Solution Approach 1:
The attachment elements are configured with asymmetric inclination angles relative to the tool body axis. The first attachment element has an inclination angle different from the second attachment element, creating unequal retention forces on opposite sides of the cutting insert. This asymmetric configuration increases the overall retention force and prevents detachment during machining operations by distributing the clamping force more effectively across the insert.
Solution Approach 2:
The attachment elements are oriented at inclination angles rather than being perpendicular to the tool body axis. This introduces a dimensional change from a standard radial configuration to an inclined configuration, allowing the attachment elements to engage the cutting insert at optimized angles that enhance retention force while maintaining structural integrity during rotation and cutting loads.
2Strength
If the tool body is made from steel with greater elasticity, then the tool body can withstand operational stresses, but the cutting insert material must be extremely hard which reduces adaptability
Solution Approach 1:
The cutting tool is divided into two distinct segments: a steel tool body providing elasticity and strength, and a separate cutting insert made from hard, wear-resistant material such as cemented carbide. This segmentation allows each component to be optimized for its specific function - the steel body absorbs shock and withstands operational stresses, while the hard insert provides the necessary cutting edge durability and can be replaced when worn, maintaining adaptability across different machining applications.
3Reliability
If the bores are configured with non-parallel longitudinal axes, then the attachment elements provide enhanced retention force, but the manufacturing precision requirements increase
Solution Approach 1:
The inclined bores are pre-configured with specific non-parallel longitudinal axes during tool body manufacturing. The attachment elements are designed to match these pre-established bore orientations, with their inclination angles predetermined to optimize engagement with the cutting insert. This preliminary configuration of the bores at manufacturing stage eliminates the need for complex field adjustments and ensures consistent retention force while maintaining achievable precision through controlled manufacturing processes.
Data Source
AI summary
A cutting tool includes a generally cylindrical tool body disposed about a central longitudinal axis, the tool body having first and second extending sides with respective first and second bores that pass therethrough, wherein a first longitudinal axis of the first bore and a second longitudinal axis of the second bore are configured to be non-parallel to a horizontal axis of the tool body that is perpendicular to the central longitudinal axis of the tool body. The cutting tool also includes a replaceable cutting insert configured to be removably attached to the tool body and first and second attachment elements configured for receipt in the first and second bores, respectively, and adapted to engage the cutting insert and secure the cutting insert to the tool body.