Character of integral PCBN razor blade and its milling apply

  • Time:
  • Click:172
  • source:LAURENDA CNC Machining
Summary: Introduce the development of the structural type of PCBN cutting tool, stress the character of the CBN300 of brand of integral razor blade with introductory new SECOMAX, the integral CBN300 razor blade that is united in wedlock to produce company of SECO of field data introduction actually finally is in plant of assembly of motivation of limited company of Shanghai general motors flexible grey mouth of milling of the high speed on the line is cast-iron cylinder body is planar - the success application example that linear velocity amounts to 2000m/min, show PCBN milling cutter improving the fine quality that shows on treatment efficiency. The ceaseless progress of material of cutting cutting tool acts important role in the development of machining technology. The property that uses material of new cutting tool to bring raises those who reach cutting tool life to increase make will ensure the interchangeability of mass-produced spare parts becomes a possibility by strict dimension precision and requirement of exterior surface roughness. PCBN(cubic nitrogen changes boron) it is the hardness in nature those who be next to diamond is mineral (microscopical hardness amounts to 8000 ～ 9000HV) . The bit that makes with PCBN material is the razor blade with highest hardness of treatment black metal. Its good hot rigid (heat-resisting amounts to 1500 ℃ of 1400 ～ ) , fight oxidisability (in 1200 ～ 1300 ℃ also do not produce chemical reaction with iron department material) with fight rupture tenacity gifts PCBN series razor blade is in actual cutting show extremely outstanding. At present 60%PCBN cutting tool is used at automobile manufacturing industry, include to be used at pass in and out of aperture of undercarriage of car engine casing, Buddhist templeput on the brakes, transmission shaft, air cylinder, engine to enrage valve base to wait. Additional, the PCBN cutting tool of 20% is used at heavy equipment (wait like roller) treatment. In the treatment that PCBN cutting tool improves treatment efficiency in a lot of need very popular also. As the rapid development of modern manufacturing industry, especially in automobile manufacturing industry flexible product line (the application that a large number of application of FMS) are stuff of PCBN new name offers very good chance. The specifications index razor blade of razor blade of CBN of series of 1 SECOMAX of watch of index of specifications of razor blade of CBN of 1 SECOMAX series is phyletic CBN content (CBN150450 of whole of CBN100502TiC of whole of CBN30908Al of matrix of hard alloy of CBN20806Ti&Al of matrix of hard alloy of CBN10502TiC of type of binder of %) grain dimension.

Whole of CBN3009022Al of matrix of 5TiN hard alloy from the watch the 1 development course: that can you see PCBN? Zinc of Wu of Xing Huan of command of glair  army closelies question  of straw of channel of ⒄ of  of plating of that ズ Gan Jiang waits till fall plating? comes more 8 point) . The improvement that the CBN100 whole razor blade of SECO company is CBN10, CBN100 is the integral PCBN razor blade of fine grained, PCBN content (50%) is less, its are low the character of hot conductibility can make heat in metal cutting is centered in cutting area, can improve the result when finish machining of hard steel of temper by dipping in water greatly. CBN100 can be used at hard steel of temper by dipping in water, sclerosis is treated the finish machining of the material of a few tall hardness such as alloy and sintered steel, the PCBN content in CBN150 (45%) is inferior also, it is a kind of razor blade that solders PCBN material to go up in hard alloy matrix, have very outstanding fight concussion tenacity, can use at cutting state more abominable even the treatment of the taller hardness workpiece of interrupted cutting. CBN300 is to be in what granularity dimension size changes to get with special technology on CBN30 foundation to defy concussion name, can use at interrupted cutting. CBN300 is body of agglomeration of a kind of pure CBN, contain PCBN to measure (90%) is taller. Have very good wearability, admirable thermal conductivity and impact resistance, with already some PCBN product photographs are compared, it is a kind of new more mature PCBN product. Usable Yuzhuguang is rough machining of hard steel of the thick finish machining with body grey cast-iron mouth, temper by dipping in water, cold hard the cast-iron treatment, treatment of manganese steel even the treatment of the material such as hard alloy. As a result of its good impact resistance, CBN300 can be used at turning hard data not only (HRC>45) , also behave on milling workpiece at the same time outstanding, finished PCBN razor blade to use the flight of milling application from turning. 2 CBN300 pursues in the application in milling treatment the cutting relation when 1 end mill pursues the process of cutting force change of tooth of 2 individual milling cutter pursues the way of force of the cutting when the metabolic pattern that hardness of material of the cutting tool below 3 different temperature compares milling to machine cutting force carries mill according to Weilenmann derivation can, the cutting force of individual mill tooth is: FSZ=bhks, kgf B=ap/sinK, mm H=SssinK, in Mm type: B -- cutting width Ap -- cutting deepness H -- cutting ply K -- SS of tool cutting edge angle -- feed Ks -- if unit cutting force pursues the F in SZsinf type of a ≈ that show SS -- the feed deflection that milling of point of a knife nods. The metabolic curve that follows F character according to the cutting force that above formula can reach individual milling cutter ages, if pursue,2 are shown. The average cutting force of individual mill tooth is FSMZ=1 ∫ F1 FSZdf, in Kgff^sf2 type: F1 -- the feed deflection that cutting begins to be in F2 -- cutting stops the feed deflection of place FS -- the hardness of material of the cutting tool below different temperature compares the osculatory role when Duan Xi CBN300 has admirable thermal conductivity and impact resistance quite with pottery and porcelain, hard alloy. Graph 3 it is CM, TP200, CBN300 the comparison that material of 3 kinds of cutting tool issues hardness in different temperature, showed the hot rigid with good CBN300. Express hard alloy of finish machining of 2 CBN300 and rough machining of contrast of parameter of hard alloy cutting: V=70 of life of cutting tool of C=150m/minap=2 ～ 3mm Vf=300mm/min hard alloy: VC=180m/minap=0.

=100 of life of 2mm Vf=500mm/min cutting tool CBN300:v=150 of life of cutting tool of C=2000m/minap=2 ～ 3mmvf=3000mm/min CBN300:vC=2000m/minap=0.

=600 of life of 2mmvf=5000mm/min cutting tool hard alloy and contrast of CBN300 cutting parameter process work: Vavuum pump casting builds: Material: HT200. Cutting tool material chooses hard alloy and CBN300 respectively, if its cutting parameter and cutting tool service life express 2 to show. The effect when 3 CBN300 milling machines example CBN300 to machine casting pig in milling is best, cutting tool life is 4 times of general PCBN razor blade. And for the plant that uses bit of pottery and porcelain to be in, CBN300 can improve life of 50 times cutting tool, cutting linear velocity can amount to 2000m/min. In recent years, PCBN is in pearlite grey mouth behaved uncommon character on the planar milling treatment of cast-iron engine, we apply CBN300 successfully at company of Shanghai general motors (the engine that SGM) builds is flexible cylinder body of engine of the milling on product line is planar, vc amounts to milling linear velocity 1600m/min, be as high as 2000m/min even the treatment efficiency that this improved engine greatly not only, shortened handling time, also promoted the suiting of motor product line capability thereby. Express the 3 contrast that are parameter of cutting of plane of CBN300 and cylinder body of engine of casting pig of hard alloy milling. Showed PCBN milling cutter to improve the fine quality that machines efficiency. Express CBN300D=160 of contrast of parameter of 3 CBN300 and cutting of plane of casting pig of hard alloy milling, z=5, SNMN090312Sae=120mm, ap=5mm, fz=0.

15mm, d=160 of Vc=1600m/min hard alloy, z=20, SPKT1504AZNae=120mm, ap=5mm: Fz=0.

21mm, vc=160m/min4 last word 21 centuries are high-tech times, the product must have high-powered, high quality to just have the market, the enterprise just has vitality. For this, answer to raise production technology level as soon as possible. To metallic treatment industry character, popularizing use PCBN cutting tool to improve production technology is a kind of strong step, and what promotion application new technology, new product needs to concern director branch not only is strong aid financially and support, the technical form a complete set that organization, designedly popularizes PCBN cutting tool stage by stage and use, also ask the user is brave in to accept new material, new technology at the same time, change old-fashioned in the past production concept and administrative method. At present cutting tool uses up cost index on average very low, occupy the 1/100 left and right sides of product cost only. If be not produced in order to rise efficiency and make sure product quality is accurate, can restrict the play of high grade and efficient cutting tool application and advanced equipment productivity. Carry out a proof, the effect of PCBN cutting tool can improve the treatment quality of the product not only, and also can raise economic benefits. CNC Milling