Cutting Insert Raised-Surface Fixation Against Lifting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cutting inserts experience lifting and edge position shifts due to insufficient force pressing them against the tool body, leading to reduced cutting precision.
Innovation Solution
The cutting insert features raised parts with inclined surfaces on its peripheral side surface and a fixing hole, allowing the tool body to press these surfaces for secure fixation and prevent lifting, while grooves and flat surfaces enhance stability and chip management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional cutting inserts without raised parts are used, then the structure is simple, but the cutting insert cannot be pressed with sufficient force to prevent lifting
Solution Approach 1:
The peripheral side surface is segmented into multiple raised parts distributed around the circumference, each capable of independently engaging with the tool body's pressing surface. This segmentation allows the pressing force to be distributed across multiple contact points, increasing overall stability without requiring a single complex pressing mechanism
Solution Approach 2:
The raised parts extend in the end surface direction (vertical dimension) from the peripheral side surface, creating a three-dimensional structure that engages with the tool body. This vertical extension allows the pressing force to be applied more effectively in the axial direction, preventing lifting that cannot be achieved by conventional flat surface designs
2Stability of the object's composition
If irregularities are provided at the peripheral side surface to prevent turning, then turning is prevented, but lifting during cutting cannot be prevented
Solution Approach 1:
The peripheral side surface is divided into multiple raised parts distributed around the circumference, with each raised part having inclined surfaces that engage with corresponding pressing surfaces on the tool body. This segmentation provides both anti-turning stability through circumferential distribution and anti-lifting reliability through vertical engagement with the tool body's pressing surfaces
Solution Approach 2:
Different regions of the peripheral side surface have different local structures - raised parts with inclined surfaces for pressing engagement, and grooves for positioning. This local differentiation allows each region to perform its specific function: raised parts prevent lifting through vertical pressing, while grooves prevent turning through lateral positioning
3Manufacturing precision
If a groove fitting the body holding surface is provided to prevent movement, then positioning is improved, but sufficient pressing force cannot be applied to prevent lifting
Solution Approach 1:
The cutting insert structure is segmented into multiple functional elements: grooves for positioning and raised parts for force application. The grooves extend from the end surface toward the peripheral side surface to prevent turning, while the raised parts with inclined surfaces engage with the tool body's pressing surface to apply sufficient axial pressing force, preventing lifting
Solution Approach 2:
The inclined surfaces of the raised parts act as intermediaries between the tool body's pressing force and the cutting insert. The inclined geometry allows the tool body to press the raised parts from above, converting this pressing action into sufficient downward force on the cutting insert, thereby preventing lifting while maintaining positioning accuracy
Data Source
AI summary
A cutting insert is provided, which can be prevented from being lifted from a tool body. A cutting insert includes two end surfaces opposed to each other, a peripheral side surface extending between the two end surfaces, a cutting edge provided at an intersecting edge between at least one of the two end surfaces and the peripheral side surface, and a fixing hole provided in an end surface direction from the first end surface to the second end surface. The peripheral side surface is provided with raised parts changing in height in the end surface direction.