How about the speed of the drill bit and the feed of the cutter in the machining center?
1, if I first drill with D13 bit (S600, F80, Q5), and the rest of all milling cutter hole2, casting and steel parts almost turn, the speed can be faster. After 28 of the hole points, use 28 bit S300, F50, Q3. directly3, 35r6 direct spiral down, layer below 0.5-0.8, S1500, F2000-3000
1:S= (1000 x cutting standard value) / (3.14 * tool diameter)The cutting tool standard value is supplied by the cutter supplierF according to cutting tool standard value. Measurement of feed per turn. I usually give D13 1300 RPM feed 250,2: faster than the above3:R6 knife milling 45# steel can give 800-1200 rpm F to 200-400. According to the depth to addition and subtraction.In fact, according to the formula to calculate, the feasibility is not high, you are not programmed to bring the tool standard every time, or, according to experience, it is better
