The experiment of steel of excel in of lubricant technology milling studies microtherm minim

5m3/min. (4) minim is lubricant device: Grind oneself minim is lubricant system; Oily quantity: 20mL/h. (5) cutting tool: Hard alloy machine places a knife, diametical 40mm, 2 tine. 2 experiments method (1) test system. Test system shrinks by machine tool, cutting tool, workpiece, empty atmospheric pressure system of air cooling of machine, drier, low temperature, minim is lubricant the system, appearance that measure power, surface roughness appearance and microscope composition. Of test system build means and microtherm minim if lubricant system pursues 1 show with 2. (2) test program. This experiment adopts requirement of 4 kinds of cutting: Dry type cutting, traditional cutting (cutting is oily) , cutting of microtherm air cooling (- 30 ℃ ) and microtherm minim is lubricant cutting. Choose identical cutting parameter and cutting time, record cutting force, cutting tool wears away, workpiece surface surface roughness and the circumstance that break bits. Lubricate to minim and microtherm air cooling, use double spray head respectively, to make cutting tool refrigeration lubricant and even, find a place for in the around of direction of cutting tool feed minim lubricates respectively nozzle and nozzle of microtherm air cooling. Rotate speed of main shaft of 3 cutting parameter: 2000r/min; Bear amount of penetration of a cutting tool: 0.

5mm; Feed speed: 200mm/min; Cut wide: 40mm (groovy mill) ; Every tine feed: 0.

05mm/z. Nextpage result and discuss 1 cutting tool to wear away cutting tool wears away according to wear away configuration can divide face of the knife before be to wear away, hind knife face wears away and border wears away [9-10] . Knife face wears away after as grind blunt standard, the experiment is measured differently below cutting condition, knife face wears away after the metabolic curve that takes width VB to let cutting time sees a picture 3. The cutting tool below dry cutting condition wears away the most acuteness, after cutting 17min, VB value is achieved 0.

318mm, ambitious 0 what at microtherm minim lubricant condition falls.

184mm (graph 3) . The cutting tool below traditional cutting condition wears away slightly good at air cooling cutting. The VB value that lubricant condition leaves microtherm trace is the least, and still wear away at stability when cutting ends level. Visible, cool in cutting process and lubricate the effect with a likewise main move. Lubricant effect is poorer when air cooling cutting, cooling effect is opposite when traditional cutting poorer, and ability aspect is being pervaded when traditional cutting weaker [11] . Microtherm minim lubricates to rise refrigeration and lubricant union, produced best cooling and lubricant result, reason cutting tool wears away lesser. In cutting process, the cutting tool below all sorts of cutting conditions wears away condition also differs somewhat, of the cutting tool after cutting 5min wear away condition sees a picture 4. Use dry cutting, traditional cutting and air cooling cutting when condition of 3 kinds of cutting, blade point is put in content of a few felt, these felt content are by workpiece material is in what felt forms on cutting tool below the condition of higher cutting temperature and greater cutting power, can be taken away ceaselessly in cutting process and form afresh, the felt that can produce cutting tool thereby wears away [9] . Lubricant cutting condition leaves microtherm trace, blade point does not have felt content almost, so its felt wears away the smallest. The cutting tool when force of cutting of 2 cutting force points to metallic cutting cuts work, the force that makes material happening is out of shape and be become to cut bits place to need by treatment [8] . Cutting force is the important data of computer bed power comsumption, have important sense to the research of cutting mechanism. If the metabolic curve that measures the cutting strength that gets a few kinds of cooling and lubricant conditions fall through the experiment pursues 5 are shown. As the addition of cutting time, curve of all cutting force shows ascendant trend, and the ascendant trend when dry cutting particularly apparent. Because cutting tool wears away,this is make edge becomes blunt, make cutting force greatens thereby. The cutting force of dry cutting is more than other cutting means apparently, it is cutting of microtherm air cooling next, and the cutting power that lubricant cutting produces microtherm drop is the least. In milling process, the cutting power that main shaft electric machinery consumes and cutting force concern into direct ratio [10] , cutting muscularity explains cutting power is great, can produce higher cutting temperature, the exterior quality of life of this pair of cutting tool and workpiece is very adverse. Surface roughness of surface of Nextpage3 surface surface roughness points to the error of microcosmic geometry appearance of workpiece surface, it is the main index that measures cutting to machine exterior quality [12] . Metabolic curve sees the exterior surface roughness below the condition of a few kinds of cutting that measures through the experiment graph 6. The exterior surface roughness that obtains below dry cutting condition is bigger, and increase as the addition of cutting time apparently, ra highest value is adjacent 0.

4 μ M. And the surface roughness below other cutting means is lesser, r A value is in basically 0.

2 μ M is the following, and change is gentlier. The workpiece surface photograph below microscope sees a picture 7. Below identical fold, surface of the workpiece below dry cutting has apparent treatment mark, and microtherm minim has grain of slight sand paper only below lubricant cutting, differentiate is not clear the direction that machines a trace, the exterior surface roughness that shows work is better. Visible, cooling and lubricant condition is the main factor that affects workpiece surface quality. Microtherm minim lubricates to comparative with air cooling cutting and traditional cutting effect, can get better exterior quality. 4 cut bits this task arises below lubricant to different refrigeration means cut bits to undertake study, the objective photograph of the cutting in experiment process sees a picture 8. Dry cutting issues the whole that cut bits to show blue; The tradition also has area of large area blue below cutting condition; Bits is cut to one fraction shows blue below air cooling cutting; And lubricant cutting produces microtherm drop cut bits not to have blue area almost. Blue cuts bits cut bits to in cutting temperature very high case falls to be oxidized and be formed. The cutting temperature that can roll out dry cutting from inside test result is highest, it is traditional cutting next, and microtherm minim is lubricant the cutting temperature lowest of cutting. Minim of this specification low temperature is lubricant in cutting, the affiliation of air cooling is having apparent effect to reducing heat in metal cutting. Inferior cutting temperature also is the main reason that blade point does not produce felt substance. The length cutting bits that lubricant cutting and air cooling cutting produce microtherm drop below 2 kinds of conditions makes an appointment with 16mm, be less than what means of additionally 2 kinds of cutting falls to cut bits (26mm) , this explains air cooling blows the area that cut bits with constant pressure, can improve bits result. The last word is using process of 30CrNi2MoVA of steel of excel in of milling of hard alloy cutting tool in, pass the comparison of pair of test data and analytic discovery, lubricant cutting can restrain microtherm minim products of blade point felt is crude, prolong cutting tool service life; Below condition of identical cutting parameter, use microtherm drop lubricant technology can reduce cutting force, reduce power comsumption of machine tool main shaft thereby, reduce the generation of heat in metal cutting; Compare with dry cutting photograph, lubricant cutting can get atom of use low temperature better exterior quality. Make clear to cutting the research of bits, microtherm minim is lubricant the cutting affiliation as a result of air cooling, excel of heat exchange effect is other means of a few kinds of cutting, and be helpful for breaking bits. The place on put together is narrated, microtherm minim is lubricant in steel of excel in of cutting of hard alloy cutting tool (30CrNi2MoVA) in obtained very good result, explain with microtherm minim lubricant technology replaces traditional cutting, realizing green cutting is feasible. CNC Milling