CN109396550A - Adaptive controllable type vibration metal cutting apparatus and method based on ultra-magnetic telescopic - Google Patents
Adaptive controllable type vibration metal cutting apparatus and method based on ultra-magnetic telescopic Download PDFInfo
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- CN109396550A CN109396550A CN201811431479.9A CN201811431479A CN109396550A CN 109396550 A CN109396550 A CN 109396550A CN 201811431479 A CN201811431479 A CN 201811431479A CN 109396550 A CN109396550 A CN 109396550A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 title claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 49
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000523 sample Substances 0.000 claims abstract description 15
- 230000005284 excitation Effects 0.000 claims abstract description 12
- 230000010355 oscillation Effects 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 239000002173 cutting fluid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D53/00—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D59/00—Accessories specially designed for sawing machines or sawing devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a kind of, and the adaptive controllable type based on ultra-magnetic telescopic vibrates metal cutting apparatus and method.Including saw frame, vibrating mechanism, saw beam, driving pulley, driven pulley, saw blade, hydraulic cylinder, dsp chip, vibrating mechanism is fixed on saw beam lower end surface, vibrating mechanism two sides are arranged with left leading arm and right leading arm, pedestal is installed on upper shell opening, pedestal lower end surface is connected through giant magnetostrictive material with amplitude transformer, amplitude transformer passes through enclosure bottom and is connected with bearing bracket stand, and giant magnetostrictive material lateral surface is successively set with excitation coil, permanent magnet；It is separately installed with speed probe, torque sensor on driven pulley and driving pulley, speed probe, torque sensor are connected with dsp chip, and dsp chip is connected by PLC controller with vibrating mechanism.The present invention is designed by simple structure, and the vibrocutting of saw blade can be realized, so that saw blade tooth tip is easier to cut material, and chip can be made to be easier to be discharged.
Description
Technical field
The present invention relates to metal cutting apparatus and method more particularly to a kind of adaptive controllable types based on ultra-magnetic telescopic
Vibrate metal cutting apparatus and method.
Background technique
As the capital equipment of blanking procedure, metal cutting band saw bed has been widely applied to automobile, shipbuilding and boat
The every field such as empty space flight.As modern manufacturing industry just develops towards efficient, high-precision direction, industrial circle is to band saw machine
Cutting-rate proposes urgent demand, especially improves the stock-removing efficiency of hard metal, is always focus of attention.
Traditional sawing mode is continuously to feed down saw blade in sawing process, fast moves realization cutting gold using sawtooth
The function of category, since saw blade rigidity itself is poor, it cannot be guaranteed that each sawtooth can participate on saw blade in sawing process
Sawing work, and easily because friction generates processing hardening phenomenon in sawing process, so that cutwork is more difficult, simultaneously
The abrasion of tooth tip will lead to the shortening of blade life.
If applying a vibration in saw blade direction of feed, sawtooth can beat repeatedly up and down during the cutting process,
So that tooth tip be more easier cut material, can timely chip breaking, prevent chip too long, to make chip be more easier to be discharged, together
When can also improve the cooling effect of cutting fluid.It realizes the function, how vibrational excitation is applied to the bands for band in fast moving
It is the key that problem.Although also there is researcher to have carried out some research in vibrating saw butt face, vibration device structure is set
Meter is excessively complicated, it is difficult to ensure that the Oscillation Amplitude of vibrating mechanism and vibration frequency obtain precision, in addition, mentioned vibration device
Oscillation Amplitude and vibration frequency can not generate adaptive real-time adjustment according to the material of sawing material, and factors above all will
Directly influence the processing efficiency of sawing and the sawing quality of workpiece to be machined.
Summary of the invention
In order to solve the problems in background technique, the present invention provides a kind of adaptive controllable type based on ultra-magnetic telescopic
Vibrate metal cutting apparatus and method, make metal cutting saw blade during the work time can according to by the material of sawing workpieces by certain
Frequency and amplitude move up and down, realize the adaptive vibration sawing of band saw for metal, improve the cutting ability and cutting fluid of saw blade
Cooling performance, improve cutting-rate.
The technical solution adopted by the invention is as follows:
One, a kind of adaptive controllable type based on ultra-magnetic telescopic vibrates metal cutting apparatus
Device includes saw frame, vibrating mechanism, saw beam, driving pulley, driven pulley, saw blade, hydraulic cylinder；Saw frame two sides difference
Driving pulley, driven pulley are installed, conveyer belt is set on driving pulley and driven pulley, saw is installed on the outside of conveyer belt
Item is equipped with vibrating mechanism and saw beam between driving pulley and driven pulley, saw beam is fixed on saw frame, and vibrating mechanism upper end is solid
Due to the middle part of saw beam lower end surface, vibrating mechanism lower end is in rolling contact with underlying saw blade back；Vibrating mechanism two sides point
Equipped with left leading arm and right leading arm, the upper end of left and right leading arm is individually fixed in the both ends of saw beam lower end surface, left and right guiding
Arm lower end is connected with underlying saw blade, makees guide and limit to blade level movement；Saw frame is installed on hydraulic cylinder, hydraulic
Cylinder drives all components being connected with saw frame to do feed motion.
The vibrating mechanism includes shell, pedestal, giant magnetostrictive material, permanent magnet, excitation coil, preloading spring, change
Width bar and bearing bracket stand, pedestal are installed on upper shell opening, and pedestal upper surface is fixed on saw beam lower end surface, is equipped in shell
Giant magnetostrictive material, permanent magnet, excitation coil and preloading spring, pedestal lower end surface are connected with giant magnetostrictive material upper end,
Giant magnetostrictive material lower end is connected with amplitude transformer upper end, and amplitude transformer lower end passes through enclosure bottom and passes through pin and bearing bracket stand phase
Even；Excitation coil, permanent magnet are successively set with around giant magnetostrictive material outward；In shell and giant magnetostrictive material
The amplitude transformer of lower section is fixed with outward flange, preloading spring upper end apical grafting in the step surface of outward flange, preloading spring lower end apical grafting in
Shell inner bottom surface；Bearing bracket stand bottom is equipped with a bearing by support shaft, and bearing outer ring is in rolling contact with saw blade back.
Further include dsp chip, speed probe is installed on the driven pulley, torque sensing is installed on driving pulley
Device, speed probe, torque sensor are connected with dsp chip, and dsp chip passes through coil control circuit and vibrating mechanism phase
Even.
The driving pulley drives conveyer belt movement to drive driven pulley to rotate, and the movement of conveyer belt drives conveyer belt
On saw blade it is reciprocating.
The preloading spring is used to apply pretightning force to giant magnetostrictive material, to improve the saturation of giant magnetostrictive material
Magnetostriction coefficient.
The left and right leading arm makes saw blade keep not shaking during the work time.
The permanent magnet and giant magnetostrictive material constitute magnetic confining field circuit, to prevent leak-stopping magnetic.
The dsp chip uses TMS320F2812 type dsp chip.
Two, the metal cutting controllable type vibration control method based on above-mentioned apparatus
Speed probe, torque sensor acquire the torque letter of the rotary speed information of driven pulley, driving pulley respectively
Rotary speed information, torque information are transmitted to dsp chip respectively by breath, speed probe, torque sensor, and dsp chip is according to revolving speed
Frequency, the duty ratio of PWM wave to PLC controller of information, torque information output PWM wave, PLC controller is according to the frequency of PWM wave
Rate and duty ratio adjust the vibration frequency and amplitude of the giant magnetostrictive material of vibrating mechanism respectively, realize the vibrating saw of saw blade
It cuts.
Dsp chip exports the frequency of PWM wave according to the rotary speed information of the speed probe received, and the frequency of PWM wave is
The vibration frequency of giant magnetostrictive material is calculated using the following equation as follows according to band wheel speed n:
In formula, f indicates the frequency of PWM wave, and n indicates that the revolving speed of belt wheel, D indicate that the diameter of belt wheel, p are adjacent two on saw blade
The spacing of tooth.
PLC controller controls the flow Q of hydraulic oil, ultra-magnetic telescopic by adjusting the size of throttle valve valve port in hydraulic cylinder
The Oscillation Amplitude of material is calculated using the following equation as follows according to flow Q:
In formula, b is the Oscillation Amplitude of giant magnetostrictive material, and D indicates that the diameter of belt wheel, p are adjacent two tooth on saw blade
Spacing, d are hydraulic cylinder cylinder diameter, and Q is the flow in hydraulic cylinder.
The beneficial effects of the present invention are:
1) present invention is using magnetostriction materials as vibration source, compared to traditional piezoelectric material, ultra-magnetic telescopic material
Material can generate bigger strain value, in addition to this also have many advantages, such as controllable precision height, output power, fast response time, lead to
Simple structure design is crossed, the vibrocutting of saw blade can be realized, so that saw blade tooth tip is more easier to cut material, and can be made
Chip is more easier to be discharged.
2) present invention can improve the cooling effect of cutting fluid, cutting-rate be improved, to obtain higher economic benefit.
3) Oscillation Amplitude of sawing of the present invention and vibration frequency can realize adaptive adjustment, reliability according to On-the-spot factor
Height, adaptive ability are strong.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention；
Fig. 2 is the structural schematic diagram of vibrating mechanism of the present invention；
Fig. 3 is the control system schematic diagram of vibrating mechanism of the present invention.
1. driving pulley；2. saw frame；3. vibrating mechanism；4. sawing beam；5. driven pulley；6. left leading arm；7. saw blade；8. right
Leading arm；9. pedestal；10. giant magnetostrictive material；11. shell；12. excitation coil；13. preloading spring；14. amplitude transformer；15.
Bearing；16. bearing bracket stand；17. pin；18. support shaft；19. permanent magnet；20. torque sensor；21. speed probe；22. liquid
Cylinder pressure.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1,2 two sides of saw frame are separately installed with driving pulley 1, driven pulley 5, driving pulley 1 and driven pulley 5
On be set with conveyer belt, saw blade 7 is installed on the outside of conveyer belt, vibrating mechanism 3 is installed between driving pulley 1 and driven pulley 5
With saw beam 4, saw beam 4 is fixed on saw frame 2, and the middle part of saw 4 lower end surface of beam, 3 lower end of vibrating mechanism are fixed in 3 upper end of vibrating mechanism
It is in rolling contact with underlying 7 back of saw blade；3 two sides of vibrating mechanism are arranged with left leading arm 6 and right leading arm 8, left and right to lead
To the upper end of arm 6,8 be individually fixed in saw 4 lower end surface of beam both ends, left and right leading arm 6,8 lower ends with underlying saw blade
7 are connected, and make guide and limit to 7 horizontal movement of saw blade；Saw frame 2 is installed on hydraulic cylinder 22, and hydraulic cylinder 22 drives all and saw frame 2
Connected component does feed motion.
As shown in Fig. 2, vibrating mechanism 3 includes shell 11, pedestal 9, giant magnetostrictive material 11, permanent magnet 19, excitation line
Circle 12, preloading spring 13, amplitude transformer 14 and bearing bracket stand 16, pedestal 9 are installed at 11 upper end opening of shell, and 9 upper surface of pedestal is solid
Due to saw 4 lower end surface of beam, giant magnetostrictive material 110, permanent magnet 19, excitation coil 12 and preloading spring are installed in shell 11
13,9 lower end surface of pedestal is connected with 11 upper end of giant magnetostrictive material, 11 lower end of giant magnetostrictive material and 14 upper end phase of amplitude transformer
Even, 14 lower end of amplitude transformer passes through 11 underrun pin 17 of shell and is connected with bearing bracket stand 16, prevents amplitude transformer 14 in sawing process
Directly with 7 back contact of saw blade and generate sliding friction, generate excessive wear；It is successively covered outward around giant magnetostrictive material 11
Equipped with excitation coil 12, permanent magnet 19；Amplitude transformer 14 in shell 11 and below giant magnetostrictive material 11 is fixed with outer
Flange, 13 upper end apical grafting of preloading spring is in the step surface of outward flange, and 13 lower end apical grafting of preloading spring is in shell inner bottom surface；Bearing bracket stand
16 bottoms are equipped with a bearing 15 by support shaft 18, and 15 outer ring of bearing is in rolling contact with 7 back of saw blade；
As shown in figure 3, being equipped with speed probe 21 on driven pulley 5, torque sensor is installed on driving pulley 1
20, speed probe 21, torque sensor 20 are connected with dsp chip, and dsp chip passes through PLC controller and 3 phase of vibrating mechanism
Even.
Specific implementation process of the present invention are as follows:
Power supply is opened, saw blade 7 is installed, the metal length that need to be processed is adjusted and is fastened, starting motor starts to add
Work, in sawing process, driving pulley 1 drives driven pulley 7 to rotate under the action of conveyer belt, to drive on conveyer belt
Saw blade 7 makees loopy moving, and the torque sensor 20 on speed probe 21, driving pulley 1 on driven pulley 5 is respectively by revolving speed
Information, torque information are transmitted to SCI serial ports in TMS320F2812 type dsp chip, and TMS320F2812 type dsp chip is according to revolving speed
Frequency, the duty ratio of PWM wave to PLC controller of information, torque information output PWM wave, PLC controller is according to the frequency of PWM wave
Rate and duty ratio adjust the vibration frequency and amplitude of the giant magnetostrictive material 10 of vibrating mechanism 3 respectively, realize the high frequency of saw blade 7
Micro breadth oscillation sawing.
The saw cutting speed v of sawtooth on saw blade 7cIt can be calculated according to the revolving speed of belt wheel, calculation formula is as follows:
In formula, vcIt indicates saw cutting speed (m/min), n indicates that band wheel speed (r/min), D indicate pulley diameters (mm).
According to the saw cutting speed v for the sawtooth that above formula is calculatedcThe frequency f that sawtooth up-down vibration can be obtained, i.e., needed for PWM wave
The frequency of output, calculation formula are as follows:
In formula, p is the spacing (mm) of adjacent two tooth on saw blade.
Calculate sawing force F according to torque M, sawing force is larger, by the hardness of sawing material is higher or sawing cross section compared with
Greatly, it needs at this time using lesser feed speed, vice versa.
Therefore, it can use the feed speed v of the value control hydraulic cylinder of sawing force Fa, system is controlled using self-adapting closed loop
System, the sawing force F that measurement is obtained and preset theoretical sawing force F0Compared in real time, theoretical sawing force F0=600P/ (π
Dn), P is driving pulley driving motor rated power in formula, and n indicates that band wheel speed (r/min), D indicate pulley diameters (mm).
It is sent to PLC controller using operation deviation as control amount, PLC controller determines arteries and veins according to the size of control amount
Punching sends number, and stepper motor adjusts the size of throttle valve valve port according to pulse number, controls the flow of hydraulic oil, utilize flow
Sensor is measured in real time the flow Q of hydraulic oil, and the feed speed v of hydraulic cylinder can be calculated according to flow Qa, calculate public
Formula is as follows:
In formula, d is hydraulic cylinder cylinder diameter, and Q is the flow in hydraulic cylinder.
So as to realize hydraulic cylinder feed speed vaAdaptive real-time control.Since saw frame is mounted on hydraulic cylinder,
Therefore feed speed vaThe as feed speed of the downward sawing workpieces of saw blade.
It can be according to feed speed vaWith saw cutting speed vcThe bite for calculating sawtooth determines super magnetic on the basis of bite
The Oscillation Amplitude of telescopic material is caused, the calculation formula of bite a is as follows:
In formula, p is the spacing (mm) of adjacent two tooth on saw blade 7.
In order to make sawtooth in vibration processes can effectively chip breaking, prevent the generation of long chip, ultra-magnetic telescopic material should be made
The Oscillation Amplitude b of material 10 is slightly larger than bite a, therefore sets the Oscillation Amplitude b=1.5a of giant magnetostrictive material.
Claims (8)
1. a kind of adaptive controllable type based on ultra-magnetic telescopic vibrates metal cutting apparatus, which is characterized in that including saw frame
(2), vibrating mechanism (3), saw beam (4), driving pulley (1), driven pulley (5), saw blade (7), hydraulic cylinder (22)；Saw frame (2) two
Side is separately installed with driving pulley (1), driven pulley (5), is set with conveyer belt on driving pulley (1) and driven pulley (5), passes
It send band outside to be equipped with saw blade (7), vibrating mechanism (3) He Juliang (4) is installed between driving pulley (1) and driven pulley (5),
Saw beam (4) is fixed on saw frame (2), and the middle part of saw beam (4) lower end surface is fixed in vibrating mechanism (3) upper end, under vibrating mechanism (3)
End is in rolling contact with underlying saw blade (7) back；Vibrating mechanism (3) two sides are arranged with left leading arm (6) and right leading arm
(8), the upper end of left and right leading arm (6,8) is individually fixed in the both ends of saw beam (4) lower end surface, left and right leading arm (6,8) lower end
It is connected with underlying saw blade (7)；Saw frame (2) is installed on hydraulic cylinder (22), and hydraulic cylinder (22) drives all and saw frame
(2) connected component does feed motion；
The vibrating mechanism (3) includes shell (11), pedestal (9), giant magnetostrictive material (11), permanent magnet (19), excitation line
Circle (12), preloading spring (13), amplitude transformer (14) and bearing bracket stand (16), pedestal (9) are installed at shell (11) upper end opening, bottom
Saw beam (4) lower end surface is fixed in seat (9) upper surface, be equipped in shell (11) giant magnetostrictive material (11), permanent magnet (19),
Excitation coil (12) and preloading spring (13), pedestal (9) lower end surface are connected with giant magnetostrictive material (11) upper end, and super mangneto is stretched
Compression material (11) lower end is connected with amplitude transformer (14) upper end, and amplitude transformer (14) lower end passes through shell (11) underrun pin (17)
It is connected with bearing bracket stand (16)；Excitation coil (12), permanent magnet (19) are successively set with around giant magnetostrictive material (11) outward；
Amplitude transformer (14) in the shell (11) and below giant magnetostrictive material (11) is fixed with outward flange, on preloading spring (13)
Hold apical grafting in the step surface of outward flange, preloading spring (13) lower end apical grafting is in shell inner bottom surface；Bearing bracket stand (16) bottom passes through branch
Support axis (18) is equipped with a bearing (15), and bearing (15) outer ring is in rolling contact with saw blade (7) back.
2. the adaptive controllable type according to claim 1 based on ultra-magnetic telescopic vibrates metal cutting apparatus, feature
It is, further includes dsp chip, is equipped with speed probe (21) on the driven pulley (5), driving pulley is equipped on (1)
Torque sensor (20), speed probe (21), torque sensor (20) are connected with dsp chip, and dsp chip passes through coil control
Circuit processed is connected with vibrating mechanism (3).
3. the adaptive controllable type according to claim 1 based on ultra-magnetic telescopic vibrates metal cutting apparatus, feature
It is, the driving pulley (1) drives conveyer belt movement to drive driven pulley (5) to rotate, and the movement of conveyer belt, which drives, to be passed
Send the saw blade (7) taken reciprocating.
4. the adaptive controllable type according to claim 1 based on ultra-magnetic telescopic vibrates metal cutting apparatus, feature
It is, the permanent magnet (19) and giant magnetostrictive material (10) constitute magnetic confining field circuit, to prevent leak-stopping magnetic.
5. the adaptive controllable type according to claim 1 based on ultra-magnetic telescopic vibrates metal cutting apparatus, feature
It is, the dsp chip uses TMS320F2812 type dsp chip.
6. the metal cutting controllable type vibration control method based on any described device of Claims 1 to 5, which is characterized in that turn
Fast sensor (21), torque sensor (20) acquire the torsion of the rotary speed information of driven pulley (5), driving pulley (1) respectively
Rotary speed information, torque information are transmitted to dsp chip, DSP respectively by square information, speed probe (21), torque sensor (20)
Chip is according to rotary speed information, frequency, the duty ratio of PWM wave to PLC controller of torque information output PWM wave, PLC controller root
Adjust the vibration frequency and amplitude of the giant magnetostrictive material (10) of vibrating mechanism (3) respectively according to the frequency and duty ratio of PWM wave,
Realize the vibration sawing of saw blade (7).
7. metal cutting controllable type vibration control method according to claim 6, which is characterized in that dsp chip is according to connecing
The frequency of the rotary speed information output PWM wave for the speed probe (21) being subject to, frequency, that is, giant magnetostrictive material (10) of PWM wave
Vibration frequency according to band wheel speed n be calculated using the following equation it is as follows:
In formula, f indicates the frequency of PWM wave, and n indicates that the revolving speed of belt wheel, D indicate that the diameter of belt wheel, p are adjacent two tooth on saw blade
Spacing.
8. metal cutting controllable type vibration control method according to claim 6, which is characterized in that PLC controller passes through
Adjust the flow Q of the size control hydraulic oil of throttle valve valve port in hydraulic cylinder (22), the vibration width of giant magnetostrictive material (10)
Degree is calculated using the following equation as follows according to flow Q:
In formula, b is the Oscillation Amplitude of giant magnetostrictive material, and D indicates that the diameter of belt wheel, p are the spacing of adjacent two tooth on saw blade,
D is hydraulic cylinder cylinder diameter, and Q is the flow in hydraulic cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811431479.9A CN109396550B (en) | 2018-11-26 | 2018-11-26 | Self-adaptive controllable vibration metal cutting device and method based on giant magnetostriction |
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| CN201811431479.9A CN109396550B (en) | 2018-11-26 | 2018-11-26 | Self-adaptive controllable vibration metal cutting device and method based on giant magnetostriction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112276232A (en) * | 2020-10-28 | 2021-01-29 | 浙江锯力煌锯床股份有限公司 | Servo electric pulse structure |
| CN112894001A (en) * | 2020-12-29 | 2021-06-04 | 浙江仁工机械有限公司 | Ultrasonic saw cutting device controlled by double closed-loop vectors |
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