High-speed milling, what is it? How is it different from conventional milling? In high-speed milling, the cutting speeds and feeds are 5-10 times higher than in conventional processing. Firstly, the cutting force is reduced. Secondly, the heat is redistributed in the cutting zone. And heat causes tool wear and reduces surface quality. And also, due to such a high speed, the cutting volume can be significantly increased. The main principle of VSO is a small cross-section of the cut, removed at a high cutting speed, and accordingly high spindle speeds and a high minute feed. What is the peculiarity of this milling? The main task of trochoidal milling is to replace full-groove milling. Differences from the traditional method: 1. this is one of the types of high-speed processing 2. this is the trajectory of movement. Look at how the cutter moves. It moves very quickly along twisted trajectories called trochoids and repeatedly removes "layers" of material. The combination of feed and circular movements changes the operating conditions. The feed per tooth fz, the cutting width ae and the angle of coverage β are constantly changing. 3. the diameter of the tool. In order to enable the tool to perform circular movements, the cutter diameter should be 30% smaller than the groove size. 4. milling occurs along the entire length of the tape at once 5. As a result, we get a small removal of material and a high speed of movement. During trochoidal milling, due to the small diameter of the cutter, the angle of coverage is from 10 ° to 80 °. That is, a smaller angle of coverage - less heating, and less cutting force. Low cutting force, uniform distribution of cutting force and temperature along the entire length of the cutting edge - this means that we can set a higher cutting speed, and this also extends the service life of the tool and improves the quality of processing. For processing, the cutter repeatedly approaches the cutting zone and moves away from it - this is why natural cooling occurs. More about tool wear - the cutter has the main points of wear: cutting in and out. Trochoidal milling involves a smooth approach of 10% of the diameter, which also ensures durability. The short arc of contact makes it possible to use a tool with a large number of cutting edges, which allows us to work with a high feed per minute without the risk of reducing durability. This design also guarantees that only one tooth is involved in cutting at any given time, which minimizes the tendency to vibration. In general, there is less load on the tool and less heating on all sides, and even more material removal per unit of time. And all this leads to increased productivity. What do we get as a result: 1. Less heating of the tool durability - durability - high modes - productivity (angle of coverage, multiple approach) 2. Withstands more load - high modes - productivity (number of teeth, feed per tooth, milling along the entire length). 3. An accurate groove in one pass - due to multiple approaches of the cutter and no problems with chip evacuation 4. Look at the resulting chips, they burn and carry away most of the heat from the cutting zone Trochoidal milling is effective when the machine characteristics are limited. On a small and medium segment machine, you can achieve productivity as on a power machine. If the part has a lot of roughing such as pocketing, it is not necessary to use a machine with a 50 taper and a gearbox. Mono use of HSO strategies The main effect of HSO is not a decrease in machine time due to the intensification of cutting modes, but an increase in the quality of processing and the efficient use of modern CNC machines. The condition for success in high-speed processing can be the correct choice of all the components involved in this process - the machine, the CNC system, the cutting tool, the auxiliary tool with the tool clamping system, the programming system, the qualifications of the technologist programmer and the CNC machine operator. Neglecting one of these components can reduce all previous efforts to zero. Write in the comments what method do you use? And I will share with you interesting moments in the following videos Let's improve the efficiency of processing together and see you there #Trochoid #VSO #Milling