The production of standard tool is mainly aimed at the cutting of large amount of ordinary metal or non-metallic parts. When the hardness of the workpiece increases due to overheating treatment or some special requirements of the workpiece can not stick to the tool, the standard tool may not meet the cutting requirements in this respect, so it is necessary to select the specific material and edge of the tungsten steel tool according to the special requirements of the workpiece The angle and the shape of the tool are designed.
The non-standard tungsten steel cutting tools can be divided into two categories: one is not required to be customized and the other is to be customized. There is no need for customized tungsten steel non-standard tool to solve two problems: dimension problem and surface roughness problem.
It should be noted that the size difference should not be too large, and the surface roughness can be achieved by modifying the geometric angle of the edge.
Special customized non-standard tungsten steel tools are needed to solve the following problems:
1. The workpiece to be processed has special shape requirements. For this kind of non-standard cutting tools, if the requirements are not very complex, it is easy to meet the requirements. However, it should be noted that the production of non-standard cutting tools itself is difficult to produce and process. Therefore, users do not need too high precision under the condition of meeting the production and processing requirements, which is the embodiment of cost and high risk.
2. The processed parts have corresponding strength and hardness. If the workpiece is overheated, the hardness and strength can not be met by ordinary cutting tools, or the tool sticking is serious, which requires additional requirements for the specific material of non-standard cutting tools. High quality cemented carbide tool, namely high quality tungsten steel tool, is the first choice.
3. The processed parts have the requirements of chip removal and chip holding. This kind of tool is mainly aimed at materials which are easy to process
In the process of designing and manufacturing tungsten steel non-standard cutting tools, there are many problems to be paid attention to
1. The geometric shape of the tool is relatively complex, and the tool is prone to deformation and other problems in the process of heat treatment, or the local stress is relatively concentrated. Therefore, it is necessary to pay attention to the change requirements of stress in the parts with relatively concentrated stress.
2. Tungsten steel tool is a brittle material, so it is necessary to pay attention to the protection of blade forming during the specific processing. Once the unconventional situation occurs, the tool will be damaged unnecessarily.