Cemented Carbide Cutting Tool Base Body Vibration Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cutting tool base bodies, especially those with long cantilevered tools, face challenges with high costs, logistical efforts in regrinding, vibrations, and plastic deformations, particularly when made from hard metal or cermet materials.
Innovation Solution
A cutting tool base body made entirely of hard metal or cermet with integrated seats and threaded holes, produced using powder metallurgy, providing a continuous one-piece design that minimizes vibrations, allows for complex geometries, and features a flute for chip removal, along with a cooling channel for efficient machining, and a hard material coating for enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the cutting tool base body is made of steel with replaceable cutting inserts, then the cutting edges can be easily replaced, but vibrations and plastic deformation occur especially with longer tool lengths
Solution Approach 1:
The base body is made of cemented carbide or cermet composite materials, combining hard particles (carbides, nitrides, carbonitrides of groups IV-VI) with metallic binder (cobalt, nickel, iron) to achieve both structural integrity for long tools and resistance to vibrations and plastic deformation, while maintaining the ability to mount replaceable cutting inserts
2Reliability
If the cutting tool base body is constructed in one piece from cemented carbide or cermet, then vibrations are reduced and plastic deformation is prevented, but costs increase particularly for larger diameters and longer tool lengths
Solution Approach 1:
The tool is segmented into a permanent base body made of cemented carbide or cermet and replaceable cutting inserts, allowing the expensive hard material to be used only where structurally necessary while keeping the cutting edges as separate, replaceable components that can be ground and reused
3Reliability
If the cutting tool base body is constructed in one piece from cemented carbide or cermet, then vibrations are reduced and plastic deformation is prevented, but logistical effort increases significantly for regrinding
Solution Approach 1:
By separating the base body from the cutting inserts, only the inserts need to be ground and replaced, not the entire tool. This significantly reduces regrinding logistical effort while maintaining the vibration-reducing benefits of the cemented carbide base body
4Ease of manufacture
If only the cutting edges are made of carbide or cermet as replaceable inserts on a steel body, then production costs are reduced, but vibrations and plastic deformation cause problems especially with longer tool lengths
Solution Approach 1:
The base body uses cemented carbide or cermet composite materials with hard particles (70-95 wt%) embedded in a ductile metallic binder (5-30 wt%), providing both cost-effectiveness and the structural integrity needed to prevent vibrations and plastic deformation in long tools
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
This solution enables cost-effective, low-vibration cutting with improved wear resistance and design freedom, particularly suitable for long tools, reducing the risk of plastic deformation and enhancing machining efficiency.
Implementation Method 1
produced using powder metallurgy
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a cutting-tool main body (2), having a first end (21) for fastening to a holder of a machine tool and a second end (22), which has at least one seat (24) for an exchangeable cutting insert (3). The seat (24) has a threaded bore (27) for receiving a fastening screw (6) for the exchangeable cutting insert (3). The first end (21) and the second end (22) having the seat (24) are formed of a hard metal or cermet as a single piece.