Be based on agglomeration of diamond small pink to exceed research of experiment of nap of hard emery wheel marvellously

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Summary: Emery wheel of diamond of bond of colophony of marvellous nap of agglomeration of small to diamond pink undertook experimenting study. Beat in order to mirror the end panel of emery wheel flatness and radial and jumpy the evaluation basis that regards nap as efficiency, contrasted through the experiment parameter of organization of main shaft rotate speed, emery wheel and speed of nap marvellous feed are right the influence of efficiency of emery wheel nap, think rotate speed of low main shaft plays nap bar parameter of taller to the nap efficiency of diamond emery wheel, emery wheel is very small to the influence of nap efficiency and speed of nap marvellous feed and nap efficiency are shown nonlinear relation. The nap that 1 foreword exceeds hard abrasive emery wheel includes plastic and Xiu Rui two respects content. Plastic is the geometrical appearance that makes emery wheel achieves precision to ask, xiu Rui is purify grinds the bond between bead, it is certain to make grind an outstanding bond height, form enough cutting blade and look bits space, manage stable grinding property. Because exceed hard abrasive especially the hardness prep above of diamond grain itself is other material, the nap that exceeds hard abrasive emery wheel consequently is very difficult. Be opposite currently the research that exceeds technology of nap of hard emery wheel basically is divided for two big fields, the nap technology that is pair of traditions on one hand undertakes improvement, developed law of eject of abrasive of filing of cup form emery wheel, dissociate and law of stretch and supersonic Xiu Rui to wait; It is non-traditional machining the method introduces nap technology on the other hand, developed laser nap, online electroanalysis nap of discharge of contact of nap, electric spark nap, supersonic oscillatory nap, double electrode and magnetic particle grind the method such as corrode Xiu Rui. But because these methods are put generally in cost taller, technology is sophisticated wait for blemish, because this is hard in the actual production of the enterprise,popularize extensively. To seek a kind of cost inferior, practical and the nap method with simple operation, we introduced a kind to exceed from the United States grind a nap tool forcedly -- , the agglomeration of diamond small pink, Tantalum and niobium is marvellous (the following abbreviation is diamond small pink is marvellous) , use the original nap plant on factory machine tool to undertake the nap of diamond emery wheel experiments. Article key studied club of diamond small pink is used at the nap craft of emery wheel of diamond of nap colophony bond. Experiment of nap of 2 emery wheel and result analyse some factory to use emery wheel of diamond of bond of dish form colophony to undertake involute hard alloy inserts tine knife treatment on machine of Y7125 roll flute, its machine a principle is to use principle of gear rack clench the teeth to extend form of the tooth that insert tine. In grinding the process that controls the knife that insert tine, make the appearance as a result of emery wheel labour grind bead gradually blunt, make grinding force increases, grinding temperature rises, produce flutter, affect the exterior quality of the knife that insert tine thereby; In the meantime, because the loss of emery wheel makes emery wheel is versed in tabulation face loses correct geometrical figure, make extend athletic loss of accuracy, treatment quality cannot assure. Because maintain the geometrical appearance of face of tabulation of emery wheel labour to be exhibited in order to ensure,becoming athletic precision is the key that the knife that insert tine machines, the verticality demand of end panel of the flatness to emery wheel, emery wheel and grinding spindle is very consequently high. Accordingly the end panel of emery wheel of our make choice of beats and radial and jumpy change is led (namely curvilinear slope) the main basis that regards an evaluation as effect of emery wheel nap, used club of diamond small pink to undertake the nap of emery wheel of colophony bond diamond experiments. Experiment principle sees a picture 1, experiment condition sees next tables. Graph machine of roll flute of Y7125 of machine tool of condition of experiment of chart of device of principle of 1 nap experiment, 1415r/min of main shaft rotate speed, electric machinery power 1.

Emery wheel of diamond of 5Kw dish form (external diameter 400mm, emery wheel of abrasive layer wide 20mm) 1: Colophony bond, 75% chroma, 150# granuality emery wheel 2: Colophony bond, 100% chroma, machine of roll flute of Y7125 of device of 200# granuality nap is special good stuff of nap device nap: Agglomeration of diamond small pink is marvellous, d=9.

525mm, l=44.

45mm transducer FVR2.

2E11S, limits of V stepless speed regulation: 0 ～ 400Hz pursues 2 emery wheel the 2 nap efficiency contrast below rotate speed of different main shaft pursue 4 nap club is different the contrast of efficiency of nap of the emery wheel below feed speed (570r/min) experiment adopts primary feed to cut deep 0.

Journey of 03mm, move back and forth 2, the method that emery wheel measures to beat after a certain number of second feed. Be opposite for parameter of etc of rotate speed of main shaft of farther test and verify the influence of effect of emery wheel nap, we from speed of marvellous feed of parameter of main shaft rotate speed, emery wheel, nap 3 respects undertook alternate contrast experiments: (1) is right emery wheel 1 with emery wheel the contrast of rotate speed of 2 commutation main shaft experiments; (2) alternates the contrast of emery wheel parameter experiments below main shaft rotate speed together; (3) to emery wheel the contrast of speed of 2 commutation feed experiments. 2.

Because the influence of rotate speed of 1 main shaft to nap efficiency lacks the test result that studies speed of grinding wheel spindle in the nap craft previously, to determine the impact between speed of grinding wheel spindle and nap effect, we undertook to the machine tool infinitely variable speeds changes our costume or dress, right to different speed of grinding wheel spindle the influence of nap efficiency undertook contrast. The trial test that has to two kinds of emery wheel discovers, in the emery wheel when main shaft rotate speed is 810r/min rotate speed of main shaft of apparent prep above is the nap efficiency of 1 the emery wheel when 1450r/min the nap efficiency of 2. Graph 2 it is to be being cut mix greatly below the situation with same rate of nap marvellous feed, the test data that to commutation emery wheel the place of main shaft rotate speed of 2 gets. From the graph 2 in can see, no matter be,radial beats, the metabolic rate in curve of nap of the emery wheel when main shaft rotate speed is inferior is older, explain the nap efficiency in the emery wheel below low rotate speed is taller. Because be below low rotate speed,this is, when the diamond grain of surface of the emery wheel inside unit time compares high rotate speed to the cutting frequency of nap club little, make the meaningless loss of nap club decreases, and nap club increases to the cutting action of emery wheel bond, improved nap efficiency consequently. 2.

The influence of parameter of 2 emery wheel to nap efficiency is opposite to study emery wheel parameter the influence of nap effect, maintain below rotate speed of 570r/min main shaft cut mix greatly feed rate is same, undertook to the emery wheel of different parameter nap contrast experiments respectively. Test result sees a picture 3. Graph below rotate speed of 3 identical main shaft (the efficiency of emery wheel nap of 570r/min) different parameter is comparative from the graph 3 in can see in two groups of experiments the end panel of emery wheel beats metabolic ratio differs very few, and the radial and jumpy change of 1 leads emery wheel to be more than emery wheel slightly 2. The tooth form that inserts tine knife through grinding the hard metal that make respectively to two kinds of emery wheel and tooth flank undertake detecting discovering, by emery wheel the 2 tooth form precision that grind the knife inserting tine that go out are mixed exterior quality is apparent prep above emery wheel 1 grind the knife inserting tine that go out, use emery wheel namely the parameter of 2 is helpful for rising to be machined the exterior quality of gear. Accordingly, effect of nap of integrated consideration emery wheel and treatment quality two respects element, the concentration that can increase emery wheel appropriately and granuality insert the treatment quality of tine knife with rising. 2.

Because the influence of speed of 3 nap marvellous feed to nap efficiency experiments conditional limitation, we realized machine of imitate Y7125 roll flute to have the test of nap to diamond emery wheel on lathe, and pass what the transverse speed taking a knife of tool carrier of change machine tool achieved rate of nap marvellous feed adjust. The emery wheel end panel when main shaft rotate speed makes marvellous feed career to go revisionist changes when 570r/min beats comparative curve sees club of graph 4(nap rotate speed of main shaft of feed speed = (R/min) × is transverse speed taking a knife (R/mm)) . Graph 4 in the feed speed of 3 curves is 1185mm/s, 2185mm/s and 11235mm/s respectively. From the graph 4 in can observe: When nap club feed speed is 1.

When 85mm/s, emery wheel end panel beats change is led the biggest, an extreme value exists to nod between speed of marvellous feed of this specification nap and nap efficiency, the relation between both is nonlinear scale concerns. Because feed will increase those who repair entire club too fast or too slow to spend career,this is, those who make nap marvellous cut deep almost is used up to use up inside very short after club and emery wheel are contacted time, follow-up grinding process just trims smooth function, did not rise to have the effect of cutting to emery wheel bond, cannot achieve the goal that improves nap efficiency consequently. The place on 3 conclusion put together is narrated, becomes by diamond small pink and agglomeration of tantalum and niobium new-style nap club can be used at undertaking nap to diamond emery wheel. Use those who be based on club of agglomeration of diamond small pink to exceed method of nap of hard emery wheel, do not need to undertake be transforminged greatly to the machine tool, can make full use of the nap plant with original machine tool, apply sound nap technology to be able to achieve more satisfactory plastic result. This method craft simple, operation is convenient, after rotate speed is working to fall to undertake Xiu Rui to emery wheel with green SiC after emery wheel plastics, can use at inserting tine knife to machine. Nap tries check proof: (If 1) is cut mix greatly rate of nap marvellous feed is fixed, criterion club of the nap when main shaft rotate speed is inferior is right the nap efficiency of diamond emery wheel is taller; (Speed of 2) nap marvellous feed and nap efficiency are shown nonlinear relation; (Parameter of 3) change emery wheel is very small to the influence of efficiency of emery wheel nap. CNC Milling CNC Machining