The important influence of fast-feed tools on high-speed cutting machining
As the ultimate executor of CNC machining, the machining efficiency, processing quality, stability and accuracy of the machining process are directly related to it. Modern cutting tool materials have experienced the development from carbon tool steel, high-speed steel, to cemented carbide, ceramics, PCBN, PCD, and the cutting performance of the tool is getting better and better, especially the application of fast-feed tools, which directly promotes the great development of CNC high-speed cutting.
Compared with traditional cutting, high-speed cutting has greatly improved its cutting speed and feed rate, and the cutting mechanism is also different. High-speed cutting has made an essential leap in cutting machining, the metal removal rate per unit power has increased by 30%~40%, the cutting force has been reduced by 30%, the cutting life of the tool has been increased by 70%, the cutting heat left in the workpiece has been greatly reduced, and the low-order cutting vibration has almost disappeared.
The fast feed tool can withstand high temperature, high pressure, friction, impact and vibration and other loads well in the process of high-speed machining, and has good mechanical properties and thermal stability, that is, it has good impact resistance, wear resistance and thermal fatigue resistance. The tool technology of fast-feed cutting is developing rapidly, and there are many applications such as diamond (PCD), cubic boron nitride (CBN), ceramic tools, coated cemented carbide, etc. Outstanding representatives of the industry include: XCHW0622, SDMT09T307, etc.
Titanium alloy and nickel-based superalloy are relatively difficult to process materials, and the cutting temperature can be much higher than that of general die steel when cutting to achieve effective processing of difficult-to-machine materials. The elastic modulus of titanium alloy is low, the rebound phenomenon of the machined surface is serious, the cutting temperature increases, and it is easy to have a chemical reaction with a variety of elements in the atmosphere to form a hard and brittle skin, the tool is easy to produce built-up edge, and the tool is easy to produce bonding wear during the cutting process. SDMT09T307 fast feed has the characteristics of good heat resistance, strong rigidity and sharp edge in titanium alloy machining, and has been widely used in the aerospace field.
In the field of hardened materials such as heat treatment die steel, XCHW0622 has the main characteristics of multi-purpose, soft and hard through-cutting, coarse and fine compatibility, which can realize diversification, high feed and universal processing, especially for the processing of soft and hard materials, one knife can be realized, which solves the problem of replacing different tools due to different processing materials, saves tool testing time and cost, and greatly improves efficiency. XCHW0622 wide range of machining, different tool coatings can cut aluminum, non-ferrous metals, steel, quenched steel and other materials to achieve soft and hard cutting in the true sense.