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Manufacturing Requirements for Non-standard Cemented Carbide Cutting Tools
2026-01-05
The manufacturing of standard cutting tools is mainly targeted at the machining of high-volume ordinary metal or non-metal workpieces. When the workpiece has undergone heat treatment resulting in increased hardness, or has special requirements such as anti-adhesion, standard cutting tools may fail to meet such machining needs. In such cases, it is necessary to custom-manufacture cemented carbide cutting tools by selecting specific materials, designing edge angles and tool shapes according to the special requirements of the workpiece.
The customization of non-standard cemented carbide cutting tools is divided into two categories: non-special customization and special customization. Non-standard cemented carbide cutting tools requiring no special customization address two issues: dimensional deviation and surface roughness.
For the dimensional issue, it is important to ensure that the dimensional deviation is not excessively large. The surface roughness issue can be resolved by modifying the geometric angles of the tool edge.
Non-standard cemented carbide cutting tools requiring special customization mainly tackle the following problems:
- Special shape requirements of the workpieceIf the shape requirements for such non-standard tools are not overly complex, they can be relatively easily met. However, it should be noted that the manufacturing of non-standard tools itself is a technically demanding process. Therefore, the user should avoid imposing overly high precision requirements when the production needs can be satisfied, as high precision inevitably translates to higher costs and greater manufacturing risks.
- Special strength and hardness requirements of the workpieceFor example, workpieces that have undergone heat treatment possess hardness and strength beyond the machining capacity of ordinary tools, or suffer from severe tool adhesion. This necessitates additional requirements for the specific material of the non-standard tool. High-quality cemented carbide cutting tools are the primary choice in such scenarios.
- Special chip removal and chip accommodation requirements of the workpieceThis type of tool is mainly designed for machining relatively easy-to-cut materials.
During the design and manufacturing process of non-standard cemented carbide cutting tools, several key considerations must be taken into account:
- Complex tool geometries tend to cause deformation during heat treatment, or lead to localized stress concentration. Therefore, it is essential to monitor and control the stress changes in areas prone to stress concentration.
- Cemented carbide cutting tools are classified as brittle materials. Great care must be taken to protect the formed inserts during the machining process. Any abnormal conditions may lead to unnecessary damage to the tools.
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