Be aimed at the analysis of what is actually happening that bore of odd blade of nickel radical alloy works

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The capability of the machine tool is stronger and stronger, work is more and more flexible also, develop to make cutting tool can catch up with this is planted, need undertakes the technology with powerful specific aim considers to using odd blade drilling tool to be opposite when nickel radical alloy undertakes deep Kong Zuan cuts operation, phenomenon of cutting tool vibration can bring very big impact. The service life of the quality difference that the result of this kind of dynamic load will be bore and cutting tool is brief. Accordingly, article general can introduce vibration of what is actually happening of bore of concerned Chan Ren to analyse measured method above all, be opposite next the in oneself the model studies test result of odd blade drilling tool is made one is compared and discuss. Using odd blade drilling tool to be opposite when nickel radical alloy undertakes deep bore, cutting tool vibration can cause very big trouble. On V cutting chamfer, shape lankily long and thin to be reduced with bending rigidity, these metropolises provide the stability in bore process to cause undesirable effect to deep Kong Dao. The nickel with strong hear resistance base the difficult cutting function of alloy, can make edge gets additional powerful and mechanical load. The is bore as a result quality that place of this kind of dynamic load brings becomes poor, the service life of cutting tool shortens. To avoid to work in the future the ground is not stabilized (use Adaptive Control for example) , need to be in to odd blade drilling tool above all the oscillatory condition in drilling operation process makes an understanding. The vibration that needs to be caused to exterior place here and place appear undertake distinguishing from vibration. To this, will be opposite below the measurement technique that vibration of what is actually happening of odd blade bore analyses makes an introduction, right the in oneself the model studies test result of odd blade drilling tool is made one is compared and discuss. The purpose that vibration of what is actually happening analyses depends on, the appears on odd blade drilling tool vibration in wanting pair of bore processes undertakes differentiate and analyse. Machine tool of Braunschweig technology university and processing technique institute (IWF) the measurement technique that the test that has used two kinds to differ and measurement unit. Above all, kistler firm should be used in bore process 9272 model 4 yuan of dynamometer measure the signal origin that exert oneself, do test of an oscillatory technology. Pass FFT analysis, the force signal that measures the place on time limits changes frequency range. In addition, to analysis of different what is actually happening comes true in whole bore process, differentiate bore process for 3 phase, get into namely, auger wear and go back. Carry this kind of kind, be measured well and truly and differentiate the oscillatory feature that gives each drilling level. The odd blade bore of machining center adopts the forerunner opening that attends by workpiece to undertake directing when be gotten normally, but distinguish necessarily to undertake to drilling level in the experiment, when beginning to be gotten, a board is installed in the ahead of workpiece, will guide odd blade drilling tool to enter hole from this inside. There is the space of a 1~2mm between the armor plate that contains oriented aperture and workpiece, isolate two area from oscillatory angle. To avoid the oriented stability that Chan Ren drilling tool increases too much in attrition force and bore process, used a diameter bigger than broach 0.

The oriented aperture of 1mm. In addition, the two side of oriented aperture set muscle standard, so that be in bore process,produce line contact with odd blade drilling tool only, and do not produce surface contact. Pass the unhook of oscillatory technology angle, can be in action the dinky work force that accompanies oriented aperture armor plate to go up and get quadrature to deliver to base, and do not conduct dynamometer to go up (graph 1) . The quality of upside vibration (workpiece and dynamometer) the quality photograph with Chan Ren drilling tool is older than wanting a lot of. Can avoid in exercise process from this exterior the vibration that cause. Undertake through the dynamometer at the back of workpiece directly to measuring the reception of signal, and rather than nods in cutting exercise influence around. Higher systematic quality can bring about taller systematic damp undoubtedly, the process vibration that measures according to place of this kind of means namely can be compared on the whole low. To avoid the phenomenon of drift of this kind of frequency to should be in as far as possible directly action nods aspirant travel to measure, achieved the 2nd kind of test, rising namely auger, auger in wearing the whole process with go back, to Chan Ren broach was made isolate with completely oscillatory technology of the environment almost, measure use quicken receiver to undertake (graph 2) . On half substation that Nextpage pursues shows the bit before beginning for bore. Broach needle is located in the ahead of workpiece directly, workpiece is held to be on equipment workbench by clip through hydraulic pressure clamp. The quite high quality that produces from this was prevented exterior the likelihood that gives out vibration. In the picture mid it is the superconductive aperture on workpiece. Getting covered case without oriented Kong Huo, process place is gotten to need to rise when these exceed feed hole to be gotten in Chan Ren. Take the oscillatory quality that cutting tool and workpiece reduce as far as possible in the process to be being gotten, superconductive aperture is set in leg ministry of progressively attenuate small-sized " square battlements " on, in order to ensure the oscillatory ability of bore workpiece. In the light of get into the process, quicken receiver to be received directly in " square battlements " on. Undertake to turn round vibration to what what appear first-rate is measured, be in directly the feed direction of odd blade broach (axial) on undertook metrical, also had perpendicular way addly in experimenting the 2nd times at the same time (radial) measure. The picture shows the relative position of the sensor in be being gotten into the process and broach. Through joining one contains load amplifier is mixed (judge) the FFT analyzer of evaluation software, can undertake an analysis to vibration of what is actually happening, express through the graph inside frequency limits. To be in oscillatory analysis can accurate and divisional piece exterior caused vibration and Chan Ren drilling tool from some vibration, in before through spirit the experiment is analysed in the experiment and have the aid of scans at laser oscillatory appearance, will measure the spirit parameter that decides odd blade drilling tool. Graph 3 citing clarify in the first main shaft to (34 ° ) on when producing vibration, the diameter is 11.

The Rou Qupin of the odd blade broach of 76mm leads rank. The curve is corresponding the 3 quality oscillator at a kind of tradition, 3 paragraphs when also accord with pair of Chan Ren drilling tool that contain broach, drill pipe and gripping sleeve differentiate. The Rou Quzhen below 880Hz frequency moves inherent mode is clearly. Another inherent mode is 2000Hz, what appear below this frequency is one kind turns round vibration. Vibration is turned round to may bring about exercise to be not stabilized in what what in be being gotten into the process, appear be out of order with cutting tool, accordingly its measure evaluation to appear very important. The 3rd inherent mode remains Rou Quzhen to move, it can be identified when 3300Hz. The whole pool of measures inherent mode and oscillatory type sees a table 1. Graph is 4 citing place shown to using ELB? 11.

When 76mm drilling tool, on the feed way that is gotten into level in 3 get into oscillatory curve to analyse. The shows process window that is gotten into level in the light of each is 1s. Besides auger the 1600Hz Rou Quzhen in crossing Cheng is moved and the 900Hz Rou Quzhen in go back process is moved besides, can see clearly, in all 3 are gotten into exercise process, can be obtained inside 1800~2000Hz frequency limits and identify give the first to turn round from vibration. Its frequency limits analyses the numerical value that measures under experiment of spirit of odd blade drilling tool slightly only. No less than is estimated before in that way, this differentia different should ascribe to the add and oscillatory quality of workpiece, flange and dynamometer. Limits of 3 other natural frequency in be being gotten into level are 2700~3300Hz. These vibration are mixed at the 8th kind accordingly the 9th kind of inherent mode, also analyse the numerical value that measures under spirit experiment slightly only. Inside the frequency limits of 3300Hz, produce Rou Quzhen to move in process of drilling tool go back only. Watch 2 mix for whole bore process vibration of all what is actually happening that are gotten 3 times into level analyse a result. The oscillatory curve on the way that adopts contrast and feed direction across, can affirm all 3 get those who wear the first to turn round natural frequency into the process to all exist arouse. Although be measured quickly,stand by significant drop, can achieve inferior frequency drift from this; But two kinds of methods (be measured quickly and pitching moment is measured) analysis of vibration of what is actually happening also makes clear as a result, two kinds of methods reached very tall consistency on whole. This explains these two kinds of methods agree with to undertake exploration to endangering the vibration of exercise. All sorts of experiment methods that vibration of what is actually happening analyses place to use make clear consistently, when to Inconel718 nickel radical alloy undertakes Chan Ren is gotten, all 3 are gotten into level to all be in what the first risk produces inside 2000Hz frequency limits to turn round inherent vibration. The test that has still makes clear, two kinds of measurement technique all can be gotten into to Chan Ren the place in the process arises and be before in spirit experiment analysis obtains inherent mode make differentiate reliably. In working next, can the what is actually happening of dangerous to can announcing vibration monitors the function has research and development, so that people takes corresponding the way to deal with a situation. CNC Milling CNC Machining