In the modern machining and production process, it is often difficult to process and produce with ordinary standard tools, which requires custom-made non-standard tools to complete the cutting operation. Tungsten steel non-standard tools, that is, cemented carbide non-standard special-shaped tools, are usually customized tools according to the requirements of the drawings and cutting performance according to the specific needs of customers for machining.
The production of standard tools is mainly for the cutting of large quantities of ordinary metal or non-metal parts. When the workpiece has been heat treated and the hardness increases or some special requirements of the workpiece cannot stick to the tool, the standard tool may not be able to meet this In terms of cutting requirements, it is necessary to make targeted production for the specific material selection, cutting edge angle and tool shape of tungsten steel tools according to the special requirements of the processed parts.
Custom-made tungsten steel non-standard knives are divided into two categories: those that do not require special customization and those that require special customization. There is no need for specially customized tungsten steel non-standard tools to solve two problems: size problems and surface roughness problems.
For the size problem, it should be noted that the size difference should not be too large, and the surface roughness problem can be achieved by modifying the geometric angle of the cutting edge.
Specially customized tungsten steel non-standard tools mainly solve the following problems:
1. The workpiece has special shape requirements. For such non-standard tools, if the requirements are not very complicated, it is relatively easy to meet the requirements. However, it should be noted that the production of non-standard tools is difficult production and processing. Therefore, the user is best not to meet the conditions of production and processing. Need too high precision requirements, high-precision requirements are the embodiment of cost and high risk.
2. The workpiece has special strength and hardness. If the workpiece has undergone heat treatment, the hardness and strength of ordinary tools cannot meet the cutting process, or the sticking of the tool is serious, which requires additional requirements for the specific material of the non-standard tool. High-quality carbide tools, namely high-quality tungsten steel tools, are the first choice.
3. The machined parts have special chip removal and chip holding requirements. This type of tool is mainly for materials that are easier to process
In the design and production of tungsten steel non-standard tools, there are also many problems that need to be paid attention to:
1. The geometry of the tool is relatively complex, and the tool is prone to deformation during the heat treatment process, or the local stress is relatively concentrated, which requires attention to the stress change requirements of the place where the stress is relatively concentrated.
2. Tungsten steel knives are brittle materials, so you need to pay great attention to the protection of the blade shape during the specific processing. Once unconventional situations occur, it will cause unnecessary damage to the knives.
Post time: Oct-09-2015
