A 1 foreword nicety, crucial crucial technology in exceeding accurate cutting processing technique to serve as modern production technology, already waited for machining domain to get applied extensively in industry of national defence industry, new and high technology, aerospace. Diamond cutting tool is implementation nicety, exceed accurate cutting to machine indispensable crucial essential factor. The diamond cutting tool that uses at present basically includes cutting tool of single crystal diamond, agglomeration to get together brilliant diamond cutting tool. Natural resources of cutting tool of single crystal diamond is scarce be short of, the price is high, and incidental cleavage action, already got used to the need that produces progress hard. Agglomeration gets together because brilliant diamond cutting tool contains binder in material, make the function of exceedingly good cutting of diamond gets not easily be developinged adequately. Diamond thick film serves as a kind new-style exceed hard data, have a lot of and exceedingly good character, be expected to be in nicety, exceed accurate cutting to machine a domain to receive promotion application. The article is right to the cutting function of cutting tool of diamond thick film and cutting dosage the influence that machines exterior surface roughness undertook experimenting study. Outside the deposit that the preparation craft of the cutting tool of preparation diamond thick film of cutting tool of 2 diamond thick film removes diamond thick film, still include thick film of the cut of diamond thick film, diamond to go up in cutter hub solder and the blade of cutting tool of diamond thick film is ground. In studying a project originally, development developed cutting tool of thick film of diamond of machine clip type. Use the cut of diamond thick film with Laser Cutting good deposit method to be isosceles right-angled triangle above all, solder diamond thick film to go up in hard alloy razor blade directly next, make bit of thick film of orthogonal and quadrate diamond. When soldering, the underside with diamond thick film (namely the interface of thick film of the diamond when gas phase deposit and deposit matrix) face of the knife before serving as bit, serve as solder side with surface of rougher diamond thick film, conduce to the mechanical table function that uses surface of diamond thick film and solder layer rising so solder intensity. The graph shows the combinative position that is thick film of the diamond after soldering and bit matrix 1 times. In the graph, on half part is diamond thick film, below half part is matrix of hard alloy razor blade, intermediate layer is solder layer. Finally, RS12 tool grinding machine is produced to go up to undertake to razor blade of diamond thick film blade is ground in Switzerland. Before the knife head appearance of razor blade of thick film of the diamond after blade is ground is mixed, hind appearance of form of knife face face is like a graph respectively 2, the graph is shown 3 times. When cutting is machined, bit of good preparation diamond thick film is secured through machine clip means go up in arbor can. Pursue the combinative state diagram between 1 diamond thick film and matrix of hard alloy razor blade the knife head appearance of razor blade of 2 diamond thick film (face of the knife before A) (face of the knife after B) pursues experiment of cutting of cutting tool of 3 diamond thick film and analysis are in the exterior form appearance after blade of razor blade of 3 diamond thick film is ground Shanghai appearance, study its cutting performance. Parameter of cutting tool geometry is: Kr=45 ° , kr=45 ° , re=0.
8mm, go=-5 ° , a=10 ° . By the LY12 aluminium alloy club that cutting test specimen is F40mm, drop-feed lubrication means is used when cutting. Detector of the TR240 that uses production of Beijing times company surface roughness measures test specimen to already machined exterior surface roughness. Below afore-mentioned experiment conditions, used law of only factor trial to study cutting dosage machines the influence of exterior surface roughness to test specimen. Because experiment place uses lathe of CG6125A high accuracy to use feed of stepless speed regulation (Vf of usable feed speed expresses) , and test result shows the test specimen that measures actually machines exterior surface roughness the value is ambitious at pressing theory of feed F calculative surface roughness is worth, because this is in test result analysis,use feed speed Vf(mm/min) to regard feed as parameter directly, and not was its changeover feed F(mm/r) . According to test data, v(m/min) of speed of Vf of attainable feed speed, cutting and cutting deepness Ap(mm) are right the impact that machines exterior surface roughness affects the curve is like a graph respectively 4, graph 5, the graph is shown 6 times. Graph the influence of Vf of 4 feed speed to treatment surface surface roughness pursues the influence of V of 5 cutting speed to treatment surface surface roughness pursues the influence of Ap of 6 cutting deepness to treatment surface surface roughness assaying result is knowable, the value follows surface roughness of surface of test specimen treatment the accretion of V of speed of feed speed Vf, cutting and cutting deepness Ap and increase, but the influence of cutting speed V to treatment surface surface roughness is relatively minor. Below this experiment condition, the tumor that accumulate bits did not produce in cutting process. The 2000r/min of highest turn up of lathe of CG6125A high accuracy, the machine tool vibration that produces when undertaking cutting is machined near top rotate speed is treatment surface surface roughness the reason that the value follows cutting to increase and increase of speed somewhat. The place before be like is narrated, below this experiment condition, the academic surface roughness according to cipher out of altimeter of academic remain area is worth far be less than the treatment surface surface roughness that measures actually to be worth, because this can think, because feed speed Vf is mixed,cutting deepness Ap increases and bringing about aggravate of cutting process vibration is treatment surface surface roughness the main reason that the value increases. In Vf=8mm/min, v=176m/min, ap=0.
Below the cutting condition of 04mm, if the graph is shown 7 times,the test specimen that measures with TALY SURF4 contourgraph machines exterior contour line, its Ra value is 0.
15µm, achieved accurate cutting to machine a requirement. Graph 4 conclusion are in the curve of outline of test specimen surface that cutting tool of 7 diamond thick film machines below this cutting experiment condition, when the aluminium alloy of LY12 of cutting of cutting tool of diamond thick film that uses preparation, surface roughness of surface of test specimen treatment is worth increase along with the accretion of feed speed Vf and cutting deepness Ap, increase along with the accretion of cutting speed " somewhat. Choose proper cutting dosage to be able to machine a Ra0.
The slick surface of 15µm. CNC Milling