Does machine collapse knife bump in CNC Machining process how to do?

Machine collapse knife should bump in CNC Machining process when, bud is new: How to do, the day should collapse! ! ! Introduction: Lie groove, what circumstance, master, had an accident! Primary: The program has a problem, not be my fault. Intermediate: I am strapped go, pat oneself, do not have for ages such. Advanced: Ouch I go, vice is dry flew, ni Ma 666! Great Master: Machine quality is OK, main shaft does not have a thing to go. Great mind: Do not have a thing to do not have a thing, bit more how old thing, the person does not have a thing to go, the smoke that take a root first (still wanting to wait for next) eating what in the heart. Bud holds newly machine: Have nothing to do with with me, the machine turns first. . . Dry machine is machined most be afraid of besides person safety problem, be mechanical failure again, among them most the nature that lets popular feeling quiver is to bump into knife of machine, collapse. . . The old man that has experience knows this kind of feeling. So how to avoid these two deadly aspect? The reason of blade of cutting tool collapse and countermeasure 1) choice of bit brand, norms is undeserved, the ply that is like bit too thin or chose when rough machining too hard too clear shop sign. Countermeasure: Increase bit ply or establish bit outfit, choose the name with bending strength and taller tenacity. 2) choice of parameter of cutting tool geometry is undeserved (if around horn passes,wait greatly) . Countermeasure: Can begin to redesign cutting tool from the following respects. Before ① is reduced appropriately, hind horn. ② uses bigger negative blade dip angle. ③ reduces tool cutting edge angle. ④ is used bigger lose arris or point circular arc. ⑤ is repaired grind transfer cutting blade, enhance point of a knife. 3) the welder of bit art incorrect, cause welding stress too big or solder interstitial. Countermeasure: ① avoids to use 3 bit chamfer structures that close. ② chooses solder correctly. ③ avoids to use oxygen alkyne blaze to heat solder, heat preservation answers after and be in soldering, in order to eliminate internal stress. ④ converts as far as possible the structure that mechanical clip originallies 4) blade grinds a method undeserved, cause grinding stress and grinding crackle; Of the tooth after be being ground to blade of PCBN milling cutter brace up had placed big, make individual tooth bear overweight, also can cause dozen of knife. Countermeasure: ① uses discontinuous grinding or grinding of diamond emery wheel. ② chooses softer emery wheel, and often nap holds emery wheel sharp. ③ notices blade grinds quality, control milling cutter tooth strictly brace up place an amount. 5) cutting dosage chooses unreasonable, if dosage is too big, machine tool frowsty car; When interrupted cutting, cutting speed is exorbitant, feed is too big, when semifinished product surplus is inhomogenous, cutting deepness is too small; When the stuff with the treatment sclerosis old tendency such as cutting tall manganese steel, feed is too small wait. Countermeasure: Choose cutting dosage afresh. 6) the knife chamfer underside of cutting tool of style of mechanical clip firm is rough whole or bit has been extended grow the reason that waits for a structure to go up. Countermeasure: Face of bottom land of ① nap knife. ② is reasonable the place that arranges cutting fluid nozzle. Hard arbor of ③ temper by dipping in water increases hard alloy spacer below bit. Study UG process designing can add QQ group 579401268 get course of free public begin school 7) cutting tool wears away excessive. Countermeasure: Change a knife in time or change cutting blade. 8) cutting fluid discharge is not worth or add note a method incorrect, cause bit to be heated up suddenly and crack caustic. Countermeasure: ① increases the flow of cutting fluid. ② is reasonable the place that arranges cutting fluid nozzle. ③ uses effective cooling method to wait like sparge refrigeration improve cooling result. ④ uses * cutting to reduce the impact to bit. 9) cutting tool installation is incorrect, be like: Cut off lathe tool exorbitant or installation is too low; End panel milling cutter used asymmetry to arrange mill to wait. Countermeasure: Reinstall cutting tool. 10) machining complex tigidity is too poor, cause cutting vibration too big. Countermeasure: ① increases the auxiliary bearing of workpiece, raise workpiece to install clip tigidity. What ② reduces cutting tool is dangerous extend length. The horn after ③ decreases what the penknife provides appropriately. The pass the time in a leisurely way that ④ adopts other brace up measure. 11) the operation is inadvertent, be like: Cutting tool by cut among workpiece fashionable, the act is too violent; Have not retreat a knife, jockey all right namely. CNC Milling