With material of tall hardness of cutting of cutting tool of pottery and porcelain
- source:COCKRIEL CNC Machining
5) poplar family name is led (GPa)Al2O3 is HC1 0.
0 700 4 400Al2O3-TiC fastens HC2 4.
5 800 5 420HC4 4.
5 1000 5 420 HC5 4.
0 900 5 420 TiC fastens HC6 4.
0 800 5 450 Si3N4 fastens SX2 3.
Watch of 5 1100 7 320 shows the physical character that is cutting tool of all sorts of pottery and porcelain 1 times. When the scathing type of the cutting tool when material of cutting tall hardness expects is using data of tall hardness of cutting of cutting tool of pottery and porcelain, the scathing great majority that knife head office appears is exterior disintegrate injury, if the photograph is shown 3 times,appear in front of cutting tool conch shape disintegrate. With cutting average data phase is compared, the cutting impedance when material of cutting tall hardness is bigger, special is a back component of force is larger. Because pass the cutting tool after successive treatment to the reverse side is worn away and make carry component of force on the back to increase,this is. This kind of accretion that carries component of force on the back criterion the tensile stress of imply back component of force and perpendicular direction is effective inside bit, disintegrate injury should appear when they exceed strength of cutting tool data. In addition appear easily also the crescent moon before cutting tool wears away depression and knife head is lost be short of caustic tartly. The main reason that produces this two sort loss is knife head temperature elevatory. The method that avoids this kind of loss is to lower cutting rate appropriately. The place on Jin is narrated knowable, the key that is about to use cutting tool of pottery and porcelain to undertake steadily machining to tall hardness material is to want to restrain those ceaselessly long and steadily action the greatest stress within bit, make it is reduced somewhat. 3 disintegrate shape is short of the photograph the commendation of material of tall hardness of cutting of cutting tool of caustic pottery and porcelain cutting condition uses cutting tool of pottery and porcelain but the HRC65 be been by the highest hardness of cutting material of cutting. Before when the stuff with cutting more expensive hardness, uses cutting rate is slower. When the material that is HRC65 a few this years with hardness of cutting of cutting tool of pottery and porcelain, cutting speed can achieve 200mm/min. But when the material that exceeds HRC60 in cutting hardness, cutting tool is easy appear in front the disintegrate loss that says, shortened so the service life of cutting tool, and treatment stability also drops subsequently. Be in for this cutting recommends the cutting rate that use graph shows in a way 1 times to reduce when this material. Additional, the R of leading edge round horn of the bit of pottery and porcelain that is used at material of cutting tall hardness should a few more largish. Of the optimum quantity that enter Jian and penetration roughly the standard is as follows: ≦ of the quantity that enter Jian (1/6)R; Penetration ≦ (1/3)R. The R in type is the round horn radius of cutting tool leading edge. Discuss to what knife head makes optimal processing appear to restrain cutting tool of pottery and porcelain normally be turned (knife head appears to be short of caustic fractionally) and the setting pours horn and the honing that undertake round horn R. This is to be in after clearing up a knife to the head is handled and mar the relation between the type, take the corresponding step that has handling to knife head by different injury type again. Use as the is quenched achieve prep above HRC60 by cementite of cutting material classics hardness of the experiment, the cutting rate that uses 150mm/min undertakes wet cutting. Uses knife handle is C22L-14, bit is the TNGN332 of HC4 series. Did not make special when explains, use the bit without honing of round horn R only. Graph the change that 2 cutting impedance increases along with angle pouring wine cup (low cutting condition) graph the change that 3 cutting impedance follows horn to measure point of view (tall cutting condition) graph the change that 4 cutting impedance follows horny quantity to increase (low cutting condition) pursue 5 cutting impedance is followed.
2mm is repaired changelessly below, angle pouring wine cup arrives in 25 ° between 45 ° change. The graph is shown 2 times is the quantity that enter Jian for 0.
10mm/rev and penetration are 0.
When 1mm, cutting impedance increases the metabolic shape of place happening along with angle pouring wine cup. The graph is shown 3 times is the quantity that enter Jian for 0.
18mm/rev and penetration are 0.
When 2mm, cutting impedance increases the metabolic shape of place happening along with angle pouring wine cup. By the graph 2 in visible, when cutting condition is inferior, cutting impedance produces minor change only along with the accretion of angle pouring wine cup. And from the graph 3 in visible, when cutting when the condition is taller, cutting impedance rises quickly along with the accretion of angle pouring wine cup, special is back component of force is elevatory more apparent. Another kind of experiment is to pour horny angle to maintain 35 ° changeless, quantity pouring wine cup is in 0.
1 to 0.
Change between 3mm. The graph is shown 4 times is the quantity that enter Jian for 0.
1mm/rev and penetration 0.
When 1mm, cutting impedance increases the change of place happening along with what pour horny amount. The graph is shown 5 times is the quantity that enter Jian for 0.
18mm/rev and penetration are 0.
When 2mm, cutting impedance increases the metabolic shape of place happening along with what pour horny amount. By see in the graph, it is low cutting condition or tall cutting condition no matter, cutting impedance produces very few change only along with the accretion of quantity pouring wine cup. From this knowable, the change of cutting impedance basically depends on the size of angle pouring wine cup, and basically do not have a relation with the size variation of quantity pouring wine cup. The time plan that begins to machine cutting tool occurrence injury is shown 6 times is to be below condition of 4 kinds of different cutting, cutting tool pours horny quantity to maintain 0.
2mm is changeless, angle pouring wine cup arrives in 25 ° between 45 ° when change, measure from the time that begins to machine cutting tool occurrence injury. By can see in the graph, it is in the quantity that enter Jian 0.
1mm/r, penetration is 0.
Below the cutting condition of 1mm, to cutting tool the angle pouring wine cup of the handling time of occurrence injury and cutting tool has nothing to do, and the service life of cutting tool is the longest. Become the accretion of penetration as the quantity that enter Jian , to cutting tool the handling time of occurrence injury follows the accretion of horny angle to produce apparent change. Its change characteristic is cutting tool the service life when angle pouring wine cup is 35 ° is the longest. The scathing type that appears to the place inside 35 ° limits in 25 ° is knife head office appears fractional be turned. And if the graph is shown 7 times,injure to what appear inside 45 ° limits in 35 ° , it is to pouring injury of angle upside occurrence disintegrate. The injury that never is the same as a type is knowable, it is why to be planted no matter cutting condition, the razor blade that cutting tool occurrence initial stage injures pours horny angle basically is same point of view. By the experiment is knowable on the other hand, below the condition that keeps certain in angle pouring wine cup, quantity pouring wine cup is in 0.
1 to 0.
Change between 3mm, below all sorts of cutting conditions, the service life of bit basically is not had how old change. Graph the disintegrate of 7 upside pouring wine cup pursues honing of 8 round horn raises honing of round horn of service life razor blade to pass to been tell before the influence of service life, fall to install how many degrees to knife head angle no matter in tall cutting condition, in treatment initial stage can see loss apparently, consequently impossible hope knife has very long service life. But after the honing that carries out round horn R to bit, can make the service life of cutting tool achieves 3 times original, if pursue,8 are shown. After the honing that this basically is R of pair of horn of bit executive circle, can realize nondestructive to hurt ground stability to be in some constant place to undertake machining namely in treatment initial stage. Now, HC4 razor blade is it is standard norms in order to pass the shape of honing of round horn R. The processing technique that the method that improves service life by the scathing type of bit expresses 2 razor blade to injure type and bit angle machines efficiency (penetration × feed) small medium processing of bolo head angle is small can raise efficiency occurrence be turned to increase horny angle without be turned, need to treat knife head point of view groove, the method that can use R of honing round horn commonly will try to improve. Referenced watch 2, the service life that 3 shown methods can improve cutting tool. If make its service life still cannot be prolonged after processing to the angle of knife head, should consider cutting condition so proper, choose the optimum quantity that enter Jian and penetration. The treatment example of material of tall hardness of cutting of cutting tool of pottery and porcelain uses treatment of HC4 razor blade to use ZC4 razor blade to machine a graph 9 medium a circle that show tooth. ZC4 razor blade is the product after Fu of the besmear on HC4 razor blade. Compare with HC4 photograph, the wear-resisting caustic sex of ZC4 got ameliorative. To porcelain of general black pottery, when processing the data with hardness spy tall with ZC4, its function is very good also, service life is 2 times of bit more original. With ZC4 treatment pursues 10 in what show axle shaft gear wheel. At this moment 2 times the service life of ZC4 also is porcelain of general black pottery. The graph is shown 11 times is the crankshaft journal part after quenching, change boron with cubic nitrogen before (treatment of CBN) razor blade. Convert now treatment of HC4 razor blade, only the treatment amount that one biangular treatment estimates bit to change boracic bit with cubic nitrogen is same. This means 4 biangular to machine a quantity to be able to make always machine number to achieve fourfold. It is cheap that the price of razor blade of together with pottery and porcelain changes boracic bit than cubic nitrogen much, can reduce manufacturing cost substantially so. Using HC5 razor blade to machine the capable person that the graph shows axle shaft gear wheel 12 times is steel of black skin cementite character, when be being machined with HC5 razor blade, its service life is 2 times of razor blade of porcelain of general black pottery. Because workpiece surface is very rough and have larger surplus, return the service life that can improve HC5 bit further otherwise. Because undertook honing of round horn R to bit, can avoid appearance of occurrence be turned so. The part that the graph shows 13 times is roller. The account with briefer service life of the razor blade when machining roller before is treatment appears namely before long be short of caustic. Convert now after preventing to be short of the HC5 with caustic very good function, its service life is before 2 times of bit, and can realize steadily treatment. To the graph the treatment of 14 gear is a successful land increases intermittent the example of service life of the razor blade when treatment. Use be able to bear or endure when the HC5 with be turned very good function is machined, its service life is 2 times of porcelain of general black pottery. The be turned that above interpose Jian says to palpability wants bit of pair of pottery and porcelain only and be short of the scathing type such as caustic to take significant step, can process tall hardness data with this kind of razor blade, achieve the goal that reduces manufacturing cost thereby. Predict the machining henceforth is even farther to efficient way develops, return the material that will develop all sorts of new cutting tool so, offer form of first-rate razor blade to the user, go further the service life that improves cutting tool satisfies the requirement of the user thereby. CNC Milling CNC Machining