Modular Cutting Insert Segmentation for Material Cost Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The high cost of replaceable cutting inserts for rotary cutting tools, formed from expensive materials like ceramic, cemented carbide, and cermet, can negate the cost savings of using these tools in small volume operations, as the materials used are often very costly and wasteful.
Innovation Solution
A modular cutting insert design comprising two or more separately formed members, where one member is formed from a high-cost material like tungsten carbide and the other from recycled or less expensive material, coupled together via sintering or other processes, to create a single cutting insert with aligned or non-aligned recessed portions forming sealed chambers, reducing material usage and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If replaceable cutting inserts are formed from expensive materials like ceramic, cemented carbide, and cermet, then the cutting performance and durability are improved, but the cost of the inserts becomes very high, negating the cost savings of using replaceable inserts in small volume operations
Solution Approach 1:
The cutting insert is divided into two distinct members: a first member made from expensive material (ceramic, cemented carbide, or cermet) that contains the cutting portions, and a second member made from less expensive material that provides structural support. This segmentation allows the expensive material to be used only where absolutely necessary for cutting performance, while the bulk of the insert uses cheaper materials, significantly reducing overall material cost while maintaining durability and cutting performance.
2Ease of manufacture
If cutting inserts are formed wholly from hardened tool steels or hardened materials, then the manufacturing process is simpler, but the replaceable insert advantage is lost as the entire tool must be replaced instead of just the insert
Solution Approach 1:
The cutting tool system is segmented into a reusable tool body and a replaceable cutting insert. The tool body can be manufactured from hardened tool steel using conventional processes, while the insert is a separate component that can be replaced when worn. This allows the expensive insert to be detached and replaced without replacing the entire tool body, maintaining both manufacturing simplicity and the economic advantage of replaceable inserts.
Solution Approach 2:
The tool body is designed with a universal interface that can accommodate multiple inserts, allowing a single tool body to be reused for extended periods with different inserts. This multi-functionality enables the tool body to serve as a reusable platform while only the consumable insert needs replacement, improving ease of repair and reducing overall tooling costs.
3Strength
If cutting inserts use expensive hardened materials throughout, then the strength and durability are maintained, but material waste increases and cost effectiveness decreases for small volume operations
Solution Approach 1:
Different portions of the cutting insert have different material qualities matched to their specific functional requirements. The first member containing the cutting portions uses expensive hardened materials (ceramic, cemented carbide, or cermet) to provide the necessary strength and wear resistance for cutting operations. The second member, which provides structural support and mounting features, uses less expensive materials. This local quality differentiation maintains strength where needed while reducing material waste and cost in non-critical areas.
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 approach reduces material costs by utilizing less expensive materials for non-cutting portions and minimizing material waste while maintaining the strength and durability of the insert, allowing for cost-effective production of cutting inserts.
Implementation Method 1
coupled together via sintering or other processes
Data Source
AI summary
A cutting insert for use on a tool body includes a first member formed in a predetermined shape and a second member formed separate from the first member in a second predetermined shape and coupled to the first member. At least one of the first member or the second member comprise a number of cutting portions adapted to perform cutting operations on a workpiece.