CN205237117U - Complex vibration drilling device - Google Patents
Complex vibration drilling device Download PDFInfo
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- CN205237117U CN205237117U CN201620005352.0U CN201620005352U CN205237117U CN 205237117 U CN205237117 U CN 205237117U CN 201620005352 U CN201620005352 U CN 201620005352U CN 205237117 U CN205237117 U CN 205237117U
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Abstract
The utility model relates to a complex vibration drilling device is applied to in various drilling machines and machining center's the drilling process, the utility model discloses create mainly by lathe body, supersound torsional oscillation system, low frequency axial vibration system triplex, the lathe body plays the effect of hookup and fixed other two parts on the basis that keeps original processing function, the utility model discloses the creation utilizes the supersound torsional oscillation driver bit of system to realize required supersound torsional oscillation, realizes low frequency axial vibration with the help of low frequency axial vibration system drive work piece, and the drilling parameter through lathe self sets up the system, selects the suitable rotational speed and the amount of feeding, carries out the complex vibration drilling and processes, the utility model discloses the creation has characteristics such as the structure commonality is good, material extensive applicability, can exert supersound and low frequency simultaneously, twist reverse with the advantages separately of the different vibration drilling methods of axial to be favorable to improving drilling processingquality, realize the drilling of high accuracy hole.
Description
Technical field
The utility model relates to field of machining, is specifically related to a kind of ultrasonic torsion and the axial vibration drilling of low frequencyDevice.
Background technology
Vibration drilling is that the one of the pure professor's youth proposition of nineteen sixties Utsunomiya river bend portion of university of Japan is novelDrill Techniques, its essence is: on traditional drilling basis, apply regular controlled vibration to cutter or workpiece, and pass throughOptimized Matching between vibration parameters and cutting parameter, changes traditional drilling mechanism, improves technological effect, realizes in high-efficiency and precisionHole processing. Through the development of five more than ten years, vibration drilling has become a kind of generally acknowledged advanced endoporus process technology, processes in difficultyMaterial drilling, dark aperture drilling, accurate endoporus processing aspect have unique advantage.
The method of implementing vibration drilling is a lot, according to vibration frequency difference, can be divided into Ultrasonic Vibration Drilling and low frequency vibrationMoving drilling; According to mode of vibration difference, can be divided into axially (longitudinally) vibration drilling (direction of vibration and drill axis direction oneCause), twisting vibration drilling (direction of vibration is consistent with the gyratory directions of drill bit). Vibration frequency is different with mode of vibration, adds work efficiencyFruit is different, and the device of realizing them is also just different.
Ultrasonic Vibration Drilling is current the most frequently used vibration drilling technique, the implementation method of this technique normally: ultrasonic waveGenerator is exported superaudible electric oscillation signal, changes ultrasonic vibration into through transducer, then after ultrasonic transformer amplifies, drives drill bitCarry out Ultrasonic Vibration Drilling processing. According to the mode of vibration difference of transducer output, can be divided into Ultrasonic Longitudinal Vibration Drilling and superSound twisting vibration drilling; In principle, the patent No. be ZL90222220.1, ZL201420309335.7,Several patents of ZL201410130919.2 and ZL01203690.0 all belong to this class device, just in architectural feature, enforcement sideDifference to some extent on formula and application scenario. The advantage of such device is: the high-frequency percussion effect of drill bit can effectively improve materialCutting ability, be particularly suitable for the processing of the hard brittle non-metallic material such as glass, pottery. But, due to ultrasonic vibration beIn tool system (involving vibrations system and cutter) resonance situation, produce, replacing cutter must carry out tuning again, and is difficult forRealize the conversion of vibration parameters. In addition, because supersonic generator power output is limit, the amplitude causing due to cutting loadLoss and parameter distortion have also restricted the effect of such device.
Low frequency axial vibration drilling is also a kind of conventional vibration drilling technique, due to its thickening cutting and angle cutting spyProperty is given prominence to, and can realize smear metal size Control, promote chip breaking chip removal, is therefore improving the difficult cutting metals such as stainless steel, titanium alloyThe endoporus machining accuracy of material, reduce hole exits burr aspect and there is significant technological effect. ZL200510012717.9 is openA kind of mechanical type low frequency axial vibration drilling device, this device is by two eccentric structures (being made up of eccentric shaft and eccentric bushing)Rotatablely moving of buncher output is converted to the straight-line oscillation of workbench, thereby drives workpiece to realize low frequency axial vibration.The adjustment of this device vibration frequency realizes by the rotating speed that changes buncher, and the adjustment of amplitude is by changing eccentric shaft and biasThe relative position of cover is realized, but limits due to motor output speed and frame for movement own characteristic, and the vibration frequency of this deviceLow, conventionally below 150Hz; And amplitude adjustment precision is not high yet, as do not realized micron-sized amplitude adjustment, thereby is difficult toRealize the optimum Match of vibration parameters and cutting parameter, restricted effective performance of vibration drilling technological effect.
Vibration drilling is a kind of novel vibrating drilling technique proposing in recent years, and its object is to give full play to one dimensionThe advantage separately of vibration drilling, the range of application of expansion Vibrational Drilling Technology. ZL201410240342.0 discloses a kind of longitrorseComposite ultraphonic vibration cutting device, this device adopts ultrasonic vibration longitrorse axis system, and a supersonic generator is exportedUltrasonic electric oscillator signal is converted to longitudinal-torsional composite ultrasonic vibration, and drives the coaxial process tool arranging to realize by clamping taper shankThe processing of composite ultraphonic vibration drilling. This device can be brought into play the advantage of ultrasonic axial vibration and ultrasonic twisting vibration simultaneously, but superSelf limit to (as output vibration parameters is difficult for conversion, lost amplitude etc.) of acoustic vibration drilling system is still its effect performanceKey restriction factors.
Summary of the invention
In order to realize mutual supplement with each other's advantages ultrasonic and low frequency, torsion and axial multiple one dimension vibration drilling technique, establish at oneThe standby upper drilling demand that simultaneously meets hard brittle materia and cutting-resistant metal material, the utility model proposes a kind of ultrasonicReverse and the axial vibration drilling device of low frequency.
Vibration drilling device of the present utility model, by machine body, is used for driving cutter to realize as machine tool accessoriesThe ultrasonic torsional vibration system of ultrasonic twisting vibration, is used for driving workpiece to realize frequency as machine tool accessories and is 10-2000Hz, shakesWidth is the low frequency axial vibration system three part compositions of the low frequency axial vibration of 1-10 μ m;
Described low frequency axial vibration system is by low-frequency vibration controller, piezoelectric vibration workbench and connect both wire groupBecome; Wherein piezoelectric vibration workbench involving vibrations platform housing, be arranged on the work top of shake table housing upper end and be arranged on and shakeThe base of moving platform housing lower end, described work top and lower end LM central shaft are integrated as one, and LM central shaft is arranged on vibrationIn platform housing and combine with shake table housing by linear bearing; Described base upper end is provided with piezo-activator, described piezoelectricityActuator is arranged in shake table housing and upper end is connected with LM central shaft; Described piezo-activator is by wire and low-frequency vibrationController connects, and receives certain waveform that low-frequency vibration controller provides and the alternate electrical signal of amplitude, drive LM central shaft andIt is that 10-2000Hz, amplitude are the low frequency axial vibration of 1-10 μ m with respect to the frequency of shake table housing that work top forms; And instituteState between work top and shake table housing and carry out between the two the restriction of torsional displacement mutually by stop pin;
The floor installation of described low frequency axial vibration system, on platen, and is arranged on lathe by taper knife handleUltrasonic torsional vibration system combination in spindle taper hole, arranges on basis at rotating speed and the amount of feeding of lathe self, carries out workpieceLow frequency axial vibration and the vibration drilling processing that combines of the ultrasonic twisting vibration of drill bit.
As the utility model preferred embodiment, described piezo-activator and low-frequency vibration controller and drive workpieceThe vibratory output forming meets following formula: Δ L=(WU-F)/Kp。
The displacement of wherein, △ L-piezo-activator output;
The force factor of W-piezo-activator, N/v;
U-low-frequency vibration controller is exported to the driving voltage of piezo-activator;
F-workpiece passes to the static load of piezo-activator;
KpThe rigidity of-piezo-activator, N/m;
Quasistatic frequency range be resonant frequency 1/3rd in, vibration frequency is identical with the frequency of alternating voltage, piezoelectricityOutput shift quantity △ L and the driving voltage U of actuator are linear.
Further, as the utility model preferred embodiment, the stiff end of described piezo-activator is installed by screwIn base center, vibration output is connected with the lower end of LM central shaft by screw thread screw closure structure.
Further, as the utility model preferred embodiment, described linear bearing is installed on vibration by interference fitThe top of platform housing interstitial hole, guiding, spacing and support LM central shaft.
Further, as the utility model preferred embodiment, described stop pin is fixed on by the helicitic texture of one endThe upper surface of shake table housing, the U-shaped groove matched in clearance of the column structure of the other end and work top.
As the utility model preferred embodiment, described ultrasonic torsional vibration system comprises ultrasonic torsional oscillation electrical control cubicles, superSound twisting vibration handle of a knife, described ultrasonic twisting vibration handle of a knife coordinates with tapered bore of machine tool spindle by taper knife handle, and by blind rivetDraw be arranged on machine tool chief axis; Electric slip ring on ultrasonic twisting vibration handle of a knife is by ultrasonic cable and ultrasonic torsional oscillation electricityControl cabinet connects, and receives electric oscillation signal; Described electric slip ring is relative with the rack sleeve of lathe with connecting rod by handle of a knife retainer ringFixing; The brush of electric slip ring be sleeved on the collecting ring close contact on ultrasonic twisting vibration handle of a knife, collecting ring and be arranged on superBetween the electrode slice of the twisting vibration sandwich transducer in sound twisting vibration handle of a knife, connect by wire, electric oscillation signal is turnedBe changed to ultrasonic twisting vibration; The hypomere of described ultrasonic twisting vibration handle of a knife is set to the luffing rotating shaft being connected with transducer, will surpassAfter the Amplitude amplification of sound twisting vibration, pass to the drill bit of clamping at luffing rotating shaft front end, to drive drill bit keeping original rotation fortuneWhen moving with axial feed motion, do ultrasonic twisting vibration.
Further, as the utility model preferred embodiment, described drill bit is by collet and lock nut clampingAt the front end of luffing rotating shaft.
Owing to adopting technique scheme, the utility model possesses following beneficial effect:
1, structure versatility is good, can be in most of drilling processing applications. Due to the ultrasonic torsion in the utility modelVibrational system and low frequency axial vibration system all can be used as machine tool accessories and use, and ultrasonic twisting vibration handle of a knife is by its taper knife handleBe directly installed in tapered bore of machine tool spindle, piezoelectric vibration workbench is fixed by screws on platen, without to originalDrill unit carries out any improvement can carry out vibration drilling processing.
2, have multiple drilling mode available, adaptability for materials is wide. The utility model can be realized traditional drilling, ultrasonicTwisting vibration drilling, low frequency axial vibration drilling and ultrasonic-different drilling mode of four kinds of low frequency vibration drillings, and each workSkill parameter can control to adjust separately, has wider adaptability for materials.
Brief description of the drawings
Fig. 1 is the structural representation of the vibration drilling device of the invention preferred embodiment;
Fig. 2 is the structure explosive view of the piezoelectric vibration workbench of the invention preferred embodiment;
Fig. 3 is the LM central shaft of innovation and creation preferred embodiment and the structural representation of work top;
Fig. 4 is the cutaway view of the shake table housing of innovation and creation preferred embodiment;
Fig. 5 is the structural representation of the base of innovation and creation preferred embodiment;
Fig. 6 is the ultrasonic twisting vibration Knife handle structure figure of the invention preferred embodiment;
In figure:
1, rack sleeve, 2, handle of a knife retainer ring, 3, connecting rod, 4, handle of a knife flange, 5, electric slip ring, 6, luffing rotating shaft, 7, lockTight nut, 8, drill bit, 9, piezoelectric vibration workbench, 10, platen, 11, ultrasonic cable, 12, ultrasonic torsional oscillation electrical control cubicles,13, wire, 14, low-frequency vibration controller, 15, aviation plug, 16, collet, 17, twisting vibration sandwich transducer, 18,Taper knife handle, 19, blind rivet, 20, collecting ring, 21, annular insulating base.
5-1, bearing, 5-2, slip ring housing, 5-3, brush, 5-4, aviation socket, 5-5, slip ring end cap;
9-1, piezo-activator, 9-2, shake table housing, 9-3, linear bearing, 9-4, LM central shaft, 9-5, work top,9-6, U-shaped groove, 9-7, stop pin, 9-8, base, 9-9, screw; 9-10, see-through window; 9-11, boss;
17-1, rear end cap, 17-2, insulation tube, 17-3, electrode slice, 17-4, piezoelectric ceramic stack, 17-5, screw connection, 17-6, drive end bearing bracket.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, the invention is further illustrated:
In conjunction with Fig. 1, the vibration drilling device of this preferred embodiment, by machine body, is used for driving as machine tool accessoriesCutter is realized the ultrasonic torsional vibration system of ultrasonic twisting vibration, is used for driving workpiece to realize frequency to be as machine tool accessories10-2000Hz, amplitude are the low frequency axial vibration system three part compositions of the low frequency axial vibration of 1-10 μ m; Wherein, lathe originallyBody shows as the rack sleeve 1 that is connected combination with ultrasonic torsional vibration system in the drawings, and connects with low frequency axial vibration systemThe platen 10 that access node closes; Concrete, ultrasonic torsional vibration system is arranged on machine tool chief axis cone by its taper knife handle 18In hole, low frequency axial vibration system is arranged on platen 10 by base 9-8; Meanwhile, in this preferred embodiment, emphasizeTwo systems that use as machine tool accessories can be clearly demonstrate with connected mode lathe by above-mentioned, without to formerHaving drill unit or lathe to carry out any improvement can increase this system and realize corresponding vibration drilling.
In conjunction with Fig. 2-Fig. 5, the low frequency axial vibration system of this preferred embodiment is by low-frequency vibration controller 14, piezoelectric vibrationWorkbench 9 and the wire 13 that connects both form; Wherein piezoelectric vibration workbench 9 involving vibrations platform housing 9-2, be arranged on vibrationThe collar plate shape work top 9-5 of platform housing upper end and be arranged on the base 9-8 of shake table housing lower end. Wherein, concrete in conjunction with figure4, it is drum that shake table housing 9-2 is set to stage casing, has up and down flange terminal pad, and perspective plane is shown as the structure of " work " type;And hypomere has see-through window 9-10. In conjunction with Fig. 3, the LM central shaft 9-4 of work top 9-5 and lower end is integrated as one, itsIn, the bolt hole on collar plate shape work top is for fixing or the processed part that is installed, and collar plate shape work top is provided withThe one U-shaped groove 9-6 in place; LM central shaft is arranged on epimere in shake table housing and also passes through high accuracy level linear bearing 9-3 and shake tableHousing combines. Concrete, linear bearing 9-3 is installed on by interference fit in the interstitial hole on shake table housing 9-2 top, withIn time, is fastened on the subsidence trough of shake table housing 9-2 inside through the mounting flange of linear bearing by screw 9-9; Straight lineBearing 9-3 is all assemblied in shake table housing 9-2, but in order to ensure work top 9-5 shaking up and down with respect to housing 9-2Moving, between the lower surface of collar plate shape work top 9-5 and the upper flanges terminal pad of shake table housing 9-2, have between 0.5～1mmGap. Base 9-8 upper surface center position is provided with piezo-activator 9-1, piezo-activator be arranged in shake table housing 9-2 andUpper end is connected with LM central shaft; In conjunction with Fig. 2, Fig. 5, the bottom stiff end of piezo-activator 9-1 is arranged on base 9-8 by screwThe boss 9-11 position at center, the vibration output of piezo-activator connects by the lower end of screw thread screw closure structure and LM central shaftConnect. Boss 9-11 external diameter on base is corresponding to the internal diameter of shake table housing 9-2 hypomere, like this, base can with shake table housingThe lower end flanges terminal pad of 9-2 fits tightly, and can be further fastening by screw 9-9. In conjunction with Fig. 1, wire 13 is through vibrationThe see-through window 9-10 of platform housing 9-2 connects piezo-activator and low-frequency vibration controller 14, and piezo-activator receives low frequencyCertain waveform that vibrating controller provides and the alternate electrical signal of amplitude, and utilize the inverse piezoelectric effect output of piezo-activator canThe axial vibration of control, because piezoelectric vibration workbench 9 is bolted on platen 10, clamping workpiece is at workbenchFace 9-5 is upper, is that 10-2000Hz, amplitude are the low frequency axial vibration of 1-10 μ m thereby drive workpiece forming frequency. At LM central shaftIn the process of up-down vibration, linear bearing 9-3 plays guiding to LM central shaft 9-4, spacing, support and antifriction function; Meanwhile,Stop pin 9-7 is fixed on the upper flange end face of shake table housing 9-2 by the helicitic texture of one end, the column structure of the other end withU-shaped groove 9-6 matched in clearance on work top 9-5, prevents from damaging piezo-activator 9-1 because of the effect of drilling torque. Wherein,Because piezo-activator is arranged in shake table housing 9-2 and need to be connected with LM central shaft, the boss 9-11 on base arranges,Its object is to improve position and the assembly precision between base 9-8 and shake table housing 9-2, thereby reduces piezo-activator 9-The 1 bending load of bearing.
The operation principle of low frequency axial vibration system is: based on the inverse piezoelectric effect of piezo-electric crystal, when giving piezo-activatorWhen 9-1 inputs the driving voltage U of some strength, piezo-activator will be exported certain displacement, and output shift quantity △ LThe static load F that size depends on driving voltage U and bears, its relation can represent by following formula:
ΔL＝(WU-F)/Kp
The force factor of W-piezo-activator in formula, N/v; KpThe rigidity of-piezo-activator, N/m. Above formula shows: piezoelectricityOutput shift quantity △ L and the driving voltage U of actuator are linear. In actual drilling process, the driving of piezo-activatorVoltage U and external load F are time dependent, still, in quasistatic frequency range (resonant frequency 1/3rd), its positionMove characteristic and still obey formula above, and vibration frequency is identical with the frequency of alternating voltage.
In conjunction with Fig. 1, Fig. 6, the ultrasonic torsional vibration system of this preferred embodiment, comprises ultrasonic torsional oscillation electrical control cubicles 12, ultrasonicTwisting vibration handle of a knife, ultrasonic twisting vibration handle of a knife coordinates with tapered bore of machine tool spindle by taper knife handle 18, and by blind rivet 19Draw is arranged on machine tool chief axis; Handle of a knife flange 4 plays connection, the location of ultrasonic twisting vibration handle of a knife in machine tool chief axisAnd gearing. Electric slip ring 5 on ultrasonic twisting vibration handle of a knife is connected with ultrasonic torsional oscillation electrical control cubicles 12 by ultrasonic cable 11, connectsReceive superaudible electric oscillation signal; Concrete, the aviation socket 5-on aviation plug 15 and the electric slip ring 5 of ultrasonic cable 11 one end4 connect. Electric slip ring 5 is relative fixing with the rack sleeve 1 of lathe with connecting rod 3 by handle of a knife retainer ring 2; Electric slip ring 5 insideBrush 5-3 be sleeved on collecting ring 20 close contacts on ultrasonic twisting vibration handle of a knife, collecting ring 20 and be arranged on ultrasonic torsionBetween the electrode slice 17-3 of the twisting vibration sandwich transducer 17 in vibrating knife handle, connect by wire, thereby realize, electricity is shakenSwing signal and be converted to ultrasonic twisting vibration; The hypomere of ultrasonic twisting vibration handle of a knife is set to the luffing rotating shaft being connected with transducer 176, drill bit 8 is the front end in luffing rotating shaft 6 by collet 16 and lock nut 7 clampings, so that shaking ultrasonic twisting vibrationWidth passes to the drill bit 8 of clamping at luffing rotating shaft 6 front ends after amplifying, thereby drives drill bit 8 keeping original rotatablely moving and axleTo feed motion time, do ultrasonic twisting vibration.
In conjunction with Fig. 6, twisting vibration sandwich transducer 17 is to realize the pass of electric oscillation signal to ultrasonic twisting vibration conversionKey components and parts, piezoelectric ceramic stack 17-4 is made up of some piezoelectric ceramics ring plates along circumference polarization, piezoelectric ceramics ring plate and withBetween rear end cap 17-1 and drive end bearing bracket 17-6, separate with elasticity and the good electrode slice 17-3 of electric conductivity and as electrode, identicalElectricity end be connected in parallel, form the positive and negative electrode of transducer. Screw connection 17-5 plays and connects each part, and makes pottery to piezoelectricityPorcelain heap 17-4 provides certain precompression, between it and electrode slice 17-3, piezoelectric ceramic stack 17-4, insulate by insulation tube 17-2Separate.
In conjunction with Fig. 6, electric slip ring 5 is important component parts of ultrasonic twisting vibration handle of a knife, and its effect is ensure rotation superSound twisting vibration handle of a knife and outside electric control part are connected between dividing. Two brush 5-3 are arranged on the brush installing hole of slip ring housing 5-2In, and insulation isolation (not shown in FIG.); Between slip ring housing 5-2 and handle of a knife column part, bearing 5-1 is set, annular insulating base21 are arranged on handle of a knife column part, and by slip ring end cap 5-5 and bearing 5-1 inner ring, it are carried out to axial location. Be sleeved on ringTwo collecting rings 20 on shape insulating base 21 are connected with two electrodes of twisting vibration sandwich transducer 17 respectively. Two affluxsRing 20 respectively with two brush 5-3 close contacts, thereby ensure at annular insulating base 21 and collecting ring 20 with handle of a knife High Rotation SpeedTime, transducer 17 still can obtain continual power supply.
Vibration drilling device when work of this preferred embodiment, need to ultrasonic torsional vibration system carry out tuning andAmplitude modulation and low frequency axial vibration system is carried out to mating and optimization of vibration parameters and cutting parameter.
About ultrasonic torsional vibration system, first switch on power, regulate the output electric oscillation letter of ultrasonic torsional oscillation electrical control cubicles 12Number frequency size, carry out frequency-tracking, make whole ultrasonic tooling system in optimum resonant state, obtain ultrasonic twisting vibrationFrequency. Ensureing, in the uniform and stable situation of ultrasonic twisting vibration, to adjust the power output size of ultrasonic torsional oscillation electrical control cubicles 12, makeIt approaches rated power, obtains the amplitude of larger ultrasonic twisting vibration.
About low frequency axial vibration system, according to the cutting of the output characteristics of low frequency axial vibration system and machined materialPerformance, determines the selection range of low frequency axial vibration parameter and cutting parameter design experiment scheme. According to ensureing reasonable cutterThe principle of durability and economic accuracy of machining, the method for employing multiple-objection optimization, (vibration is frequently to obtain low frequency axial vibration parameterRate, amplitude) and cutting parameter (rotating speed, the amount of feeding) between optimum Match.
So far, the ultrasonic twisting vibration parameter of the low frequency axial vibration parameter of workpiece, drill bit, and cutting parameter (rotating speed,The amount of feeding) setting completed, can carry out vibration drilling processing.
In addition, because two systems of this preferred embodiment are used as machine tool accessories, without to original drill unit orLathe carries out any improvement can be increased this system and realize corresponding vibration drilling. Therefore, in other embodiments, completelyCan need to select two systems not increase according to scene, lathe itself exists as traditional drilling; Or increase separatelyAdd ultrasonic torsional vibration system or low frequency axial vibration system, realize independent ultrasonic twisting vibration drilling or low frequency axial vibrationDrilling; Can realize traditional drilling, ultrasonic twisting vibration drilling, low frequency axial vibration drilling or ultrasonic-low frequency complex vibration boresCut four kinds of different drilling modes, and each technological parameter can control to adjust separately, therefore there is wider adaptability for materials.
Claims (7)
1. a vibration drilling device, is characterized in that: by machine body, be used for driving cutter to realize super as machine tool accessoriesThe ultrasonic torsional vibration system of sound twisting vibration, being used for driving workpiece to realize frequency as machine tool accessories is 10-2000Hz, amplitudeFor the low frequency axial vibration system three parts compositions of the low frequency axial vibration of 1-10 μ m;
Described low frequency axial vibration system is by low-frequency vibration controller (14), piezoelectric vibration workbench (9) and connect both leadingLine (13) composition; Wherein piezoelectric vibration workbench (9) involving vibrations platform housing (9-2), be arranged on the work of shake table housing upper endMake table top (9-5) and be arranged on the base (9-8) of shake table housing lower end, described work top (9-5) and lower end LM central shaft(9-4) be integrated as one, LM central shaft is arranged in shake table housing and by linear bearing (9-3) and shake table housing phaseIn conjunction with; Described base (9-8) upper end is provided with piezo-activator (9-1), and described piezo-activator is arranged on shake table housing (9-2)Interior and upper end is connected with LM central shaft (9-4); Described piezo-activator connects by wire (13) and low-frequency vibration controller (14)Connect, receive certain waveform and the alternate electrical signal of amplitude, drive LM central shaft (9-4) and work that low-frequency vibration controller providesIt is that 10-2000Hz, amplitude are that the low frequency of 1-10 μ m axially shakes that table top (9-5) forms with respect to the frequency of shake table housing (9-2)Moving; And carry out between the two the restriction of torsional displacement mutually by stop pin (9-7) between described work top and shake table housing;
It is upper that the base (9-8) of described low frequency axial vibration system is arranged on platen (10), and by taper knife handle (18)Be arranged on the ultrasonic torsional vibration system combination in tapered bore of machine tool spindle, at rotating speed and the amount of feeding of lathe self, basis be setUpper, carry out the vibration drilling processing that the low frequency axial vibration of workpiece and the ultrasonic twisting vibration of drill bit combine.
2. vibration drilling device according to claim 1, is characterized in that: described piezo-activator (9-1) and low frequencyVibrating controller (14) and the vibratory output that drives workpiece to form meet following formula:
ΔL＝(WU-F)/Kp
The displacement of wherein, △ L-piezo-activator output;
The force factor of W-piezo-activator, N/v;
U-low-frequency vibration controller is exported to the driving voltage of piezo-activator;
F-workpiece passes to the static load of piezo-activator;
KpThe rigidity of-piezo-activator, N/m;
At quasistatic frequency range, in 1/3rd of resonant frequency, vibration frequency is identical with the frequency of alternating voltage, piezoelectric actuatedOutput shift quantity △ L and the driving voltage U of device are linear.
3. vibration drilling device according to claim 1, is characterized in that: described piezo-activator (9-1) fixingEnd is arranged on base (9-8) center by screw, and vibration output is by screw thread screw closure structure and LM central shaft (9-4)Lower end connects.
4. vibration drilling device according to claim 1, is characterized in that: described linear bearing (9-3) is by interferenceCoordinate the top that is installed on shake table housing (9-2) interstitial hole, guiding, spacing and support LM central shaft (9-4).
5. vibration drilling device according to claim 1, is characterized in that: described stop pin (9-7) is by one endHelicitic texture is fixed on the upper surface of shake table housing (9-2), the U-shaped groove of the column structure of the other end and work top (9-5)(9-6) matched in clearance.
6. vibration drilling device according to claim 1, is characterized in that: described ultrasonic torsional vibration system comprises superSound torsional oscillation electrical control cubicles (12), ultrasonic twisting vibration handle of a knife, described ultrasonic twisting vibration handle of a knife is by taper knife handle (18) and latheSpindle taper hole coordinates, and is arranged on machine tool chief axis by the draw of blind rivet (19); Electricity on ultrasonic twisting vibration handle of a knifeSlip ring (5) is connected with ultrasonic torsional oscillation electrical control cubicles (12) by ultrasonic cable (11), receives electric oscillation signal; Described electric slip ring (5)Relative fixing with the rack sleeve (1) of lathe with connecting rod (3) by handle of a knife retainer ring (2); The brush (5-3) of electric slip ring and coverBe contained in collecting ring (20) close contact on ultrasonic twisting vibration handle of a knife, collecting ring (20) and be arranged on ultrasonic twisting vibration handle of a knifeBetween the electrode slice (17-3) of interior twisting vibration sandwich transducer (17), connect by wire, thereby electric oscillation signal is turnedBe changed to ultrasonic twisting vibration; The hypomere of described ultrasonic twisting vibration handle of a knife is set to the luffing rotating shaft being connected with transducer (17)(6), by passing to the drill bit (8) of clamping at luffing rotating shaft (6) front end after the Amplitude amplification of ultrasonic twisting vibration, to drive drill bit(8) keep original rotatablely move and axial feed motion in do ultrasonic twisting vibration.
7. vibration drilling device according to claim 6, is characterized in that: described drill bit (8) passes through collet(16) and lock nut (7) clamping at the front end of luffing rotating shaft (6).
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| CN201620005352.0U CN205237117U (en) | 2016-01-04 | 2016-01-04 | Complex vibration drilling device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105499626A (en) * | 2016-01-04 | 2016-04-20 | 河南科技学院 | Compound vibration drilling device |
| CN106925809A (en) * | 2017-03-02 | 2017-07-07 | 南京航空航天大学 | Become dimension vibration auxiliary drill unit and track production method |
| CN106964803A (en) * | 2017-05-19 | 2017-07-21 | 青岛科技大学 | A kind of micro hole ultrasonic vibration drilling machine |
| CN106985015A (en) * | 2017-04-13 | 2017-07-28 | 南京航空航天大学 | A kind of monoblock type composite ultraphonic handle device |
| CN109176153A (en) * | 2018-09-21 | 2019-01-11 | 哈尔滨工业大学 | A kind of mechanical rotating error of axis active compensation device based on piezoelectric actuator |
| CN110303181A (en) * | 2019-06-24 | 2019-10-08 | 河南科技学院 | The compound drilling process of difficult-to-machine material |
| CN115106851A (en) * | 2022-07-04 | 2022-09-27 | 安徽聚芯智造科技股份有限公司 | Ultrasonic vibrator winding and grinding prevention mechanism |
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2016
- 2016-01-04 CN CN201620005352.0U patent/CN205237117U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499626A (en) * | 2016-01-04 | 2016-04-20 | 河南科技学院 | Compound vibration drilling device |
| CN106925809A (en) * | 2017-03-02 | 2017-07-07 | 南京航空航天大学 | Become dimension vibration auxiliary drill unit and track production method |
| CN106925809B (en) * | 2017-03-02 | 2018-11-09 | 南京航空航天大学 | Become dimension vibration auxiliary drill unit and track production method |
| CN106985015A (en) * | 2017-04-13 | 2017-07-28 | 南京航空航天大学 | A kind of monoblock type composite ultraphonic handle device |
| CN106964803A (en) * | 2017-05-19 | 2017-07-21 | 青岛科技大学 | A kind of micro hole ultrasonic vibration drilling machine |
| CN109176153A (en) * | 2018-09-21 | 2019-01-11 | 哈尔滨工业大学 | A kind of mechanical rotating error of axis active compensation device based on piezoelectric actuator |
| CN110303181A (en) * | 2019-06-24 | 2019-10-08 | 河南科技学院 | The compound drilling process of difficult-to-machine material |
| CN115106851A (en) * | 2022-07-04 | 2022-09-27 | 安徽聚芯智造科技股份有限公司 | Ultrasonic vibrator winding and grinding prevention mechanism |
| CN115106851B (en) * | 2022-07-04 | 2024-02-27 | 安徽聚芯智造科技股份有限公司 | Winding-preventing grinding mechanism for ultrasonic vibrator |
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