CN106735355A - A kind of vibration cutting device based on domes characteristic - Google Patents
A kind of vibration cutting device based on domes characteristic Download PDFInfo
- Publication number
- CN106735355A CN106735355A CN201611154443.1A CN201611154443A CN106735355A CN 106735355 A CN106735355 A CN 106735355A CN 201611154443 A CN201611154443 A CN 201611154443A CN 106735355 A CN106735355 A CN 106735355A
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- CN
- China
- Prior art keywords
- domes
- cutting device
- donor
- vibration cutting
- framework
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/108—Piezoelectric elements
Abstract
The invention discloses a kind of vibration cutting device based on domes characteristic, the vibration cutting device includes diamond blade, domes and piezoelectric ceramics, wherein：The domes are made up of donor, arch arm and framework, and the two ends of donor are supported by arch arm, and overall is in M shapes, and arch arm is fixed on framework；The diamond blade is arranged on donor midpoint；The axis of the piezoelectric ceramics is overlapped with the center line of vibration cutting device, and its one end is contacted with donor midpoint, and the other end is fixed on framework.Vibration cutting device of the invention utilizes domes characteristic, bigger working frequency and bigger impulse stroke can be obtained, high efficiency, the vibrocutting of big stroke are realized, has the advantages that small volume, light weight, manufacture easy to process and installation, use cost are low.
Description
Technical field
The invention belongs to ultra-precise cutting processing technique field, it is related to a kind of fast tool servo device, and in particular to one kind is utilized
The vibration cutting device of the Piezoelectric Ceramic of domes characteristics design.
Background technology
Traditional precision diamond turning technology has the advantages that machining accuracy is high, surface quality is good, but to it is asymmetric from
Working ability by curved surface, the micro-structure surface of non-rotational symmetric is weaker, and with development in science and technology, such part is in military, boat
My god, the application in the field such as medical treatment it is more and more extensive, surface micro-structure becomes increasingly complex, requirement on machining accuracy more and more higher.
For such case, foreign scholar is improved the feed mode of common turnery processing, has developed quick car
Process technology is cut, produces rapid feed to move by applying exciting force along direction of feed, by the gyration with main shaft, feed
Motion is combined, the change of diamond cutter real-time tracking finished surface, can realize the precision of Surfaces of Unusual Shape part or structure
Highly-efficient processing.The working frequency and stroke of vibrocutting turn into the emphasis of this cutting technology, working frequency processing efficiency higher
Higher, the more big then range of work of stroke is wider.
Traditional one-dimensional vibration cutting device is mostly using flexible hinge as guiding, resetting structure.Flexible hinge has
The features such as rigidity is low, deformation direction is controllable, under the excitation of piezoelectric ceramics, it is possible to achieve the small low-frequency vibrocutting of stroke,
Stroke is several or more than ten micron when general work frequency is tens hertz, and as working frequency increase stroke further subtracts
It is small.Its shortcoming is low intrinsic frequency, it is impossible to carry out the machining of higher frequency, to the utilization of Piezoelectric Ceramic ability not
It is enough abundant.
Domes are usually used in architectural and civil engineering, when arch two ends can provide support enough, its non-deformability pole
By force, but during underbraced, domes are equally easily deformed, and its effect is similar to spring.Many biologies are provided with evolution
The middle arch structure of domes, such as ostrich foot, its spring huge for ostrich provides.
The content of the invention
The purpose of the present invention is can to produce huge restoring force etc. based on the deformable of domes, rigidity is controllable, after deformation
Characteristic, there is provided a kind of to be operated in higher frequency, the vibration cutting device with bigger stroke.
The purpose of the present invention is achieved through the following technical solutions：
A kind of vibration cutting device based on domes characteristic, including diamond blade, domes and piezoelectric ceramics, its
In：
The domes are made up of donor, arch arm and framework, and the two ends of donor are supported by arch arm, and overall is in M shapes, and arch arm is fixed
On framework；
The diamond blade is arranged on donor midpoint；
The axis of the piezoelectric ceramics is overlapped with the center line of vibration cutting device, and its one end is contacted with donor midpoint, the other end
It is fixed on framework.
In the present invention, the junction round-corner transition of the donor and arch arm.
In the present invention, the donor, arch arm and framework are integrally machined and form.
In the present invention, the donor is equal with the thickness of arch arm and thickness less than framework.
In the present invention, the donor and arch center line of the arm on vibration cutting device are symmetrical.
In the present invention, the diamond blade is arranged on the boss at donor midpoint, has screwed hole on boss, by screw
It is fixed as one with diamond blade.
In the present invention, mounting hole is provided with the framework.
Domes can be conducted to the support of arch power in stress, if rigidity is weaker at support, total
Will deform, the midpoint of arch can obtain larger displacement.In vibration cutting device of the invention, encircle arm insufficient rigidity, it is variable
Shape.Compared with flexible hinge chain structure, deformed region is that donor is significantly greater than the thin of flexible hinge with arm, the restoring force of generation is encircleed
Muscle, while the equivalent moving mass in vibration processes is much smaller than flexible hinge chain type, thus can obtain more high natural frequency, work
Frequency range is bigger.
Be applied to the characteristic of domes on vibration cutting device by the present invention, and the vibration with existing Piezoelectric Ceramic is cut
Turning device is compared, with following several respects advantage：
（1）Small volume of the present invention, light weight, it is easy to which processing and manufacturing and installation, use cost are low.
（2）The present invention is higher to the utilization rate of the driving force of piezoelectric ceramics, compared with same type is designed, piezoelectric ceramics
Closer to its intrinsic frequency, output displacement is closer to its theoretical output limit for working frequency.
（3）The present invention has bandwidth of operation higher, exports undistorted under the pumping signal of 1000Hz, and still have larger
Dynamic respond, specific output displacement is relevant with piezoelectric ceramics used, but is not less than a quarter of its nominal travel.
（4）The present invention has stroke higher, and under tens hertz of low-frequency excitation signal, exportable displacement is more than similar
Type is designed, and specific output displacement is relevant with piezoelectric ceramics used, but is not less than 3/4ths of its nominal travel.
Brief description of the drawings
Fig. 1 is the structural representation of vibration cutting device；
Fig. 2 is domes stress and Vibration Simulation figure；
In figure：1- diamond blades, 2- screws, 3- donors, 4- arch arms, 5- piezoelectric ceramics, 6- mounting holes, 7- frameworks, 8- is installed
Bolt.
Specific embodiment
Technical scheme is further described below in conjunction with the accompanying drawings, but is not limited thereto, it is every to this
Inventive technique scheme is modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention, all should be covered
In protection scope of the present invention.
As shown in figure 1, the vibration cutting device based on domes characteristic of the invention is by diamond blade 1, arch knot
Structure piezoelectric ceramics 5 is constituted, wherein：
The domes are made up of donor 3, arch arm 4 and framework 7, and donor 3 is a cambered surface, and the two ends of donor 3 are by 4, arch arm
Support, overall is in M shapes, and junction round-corner transition, arch arm 4 is fixed on support 7, and donor 3 and arch arm 4 are on vibration cutting device
Center line is symmetrical；
The diamond blade 1 is fastened on the boss of donor 3 by screw 2；
The axis of the piezoelectric ceramics 5 overlaps with the center line of vibration cutting device, is fixed on framework 7 by installation bolt 8,
Screwing installation bolt 8 makes the midpoint of another end in contact donor 3 of piezoelectric ceramics 5 and pretension；
Mounting hole 6 is provided with the framework 7, vibration cutting device is arranged on by operating position by mounting hole 6.
Operation principle：
Under the support of two arch arms 4, its midpoint can move back and forth donor 3 when being encouraged by piezoelectric ceramics 5, diamond tool
Piece 1 vibrates with the vibration at arch arm 4 midpoint.Change driving voltage and frequency, vibrocutting stroke and the work of diamond blade
Frequency changes therewith.Domes stress is as shown in Figure 2 with Vibration Simulation figure.
Claims (7)
1. a kind of vibration cutting device based on domes characteristic, it is characterised in that the vibration cutting device includes diamond
Blade, domes and piezoelectric ceramics, wherein：
The domes are made up of donor, arch arm and framework, and the two ends of donor are supported by arch arm, and overall is in M shapes, and arch arm is fixed
On framework；
The diamond blade is arranged on donor midpoint；
The axis of the piezoelectric ceramics is overlapped with the center line of vibration cutting device, and its one end is contacted with donor midpoint, the other end
It is fixed on framework.
2. the vibration cutting device based on domes characteristic according to claim 1, it is characterised in that the donor, arch
Arm and framework are integrally machined and form.
3. the vibration cutting device based on domes characteristic according to claim 1, it is characterised in that the donor and
Encircle the junction round-corner transition of arm.
4. the vibration cutting device based on domes characteristic according to claim 1, it is characterised in that the donor and
Encircle arm thickness is equal and thickness less than framework.
5. the vibration cutting device based on domes characteristic according to claim 1,2,3 or 4, it is characterised in that described
Donor and arch center line of the arm on vibration cutting device are symmetrical.
6. the vibration cutting device based on domes characteristic according to claim 1, it is characterised in that the diamond
Blade is arranged on the boss at donor midpoint, there is screwed hole on boss, is fixed as one with diamond blade by screw.
7. the vibration cutting device based on domes characteristic according to claim 1,2 or 4, it is characterised in that the frame
Mounting hole is provided with frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611154443.1A CN106735355B (en) | 2016-12-14 | 2016-12-14 | A kind of vibration cutting device based on domes characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611154443.1A CN106735355B (en) | 2016-12-14 | 2016-12-14 | A kind of vibration cutting device based on domes characteristic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106735355A true CN106735355A (en) | 2017-05-31 |
| CN106735355B CN106735355B (en) | 2018-04-17 |
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| CN201611154443.1A Active CN106735355B (en) | 2016-12-14 | 2016-12-14 | A kind of vibration cutting device based on domes characteristic |
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| CN106735355B (en) | 2018-04-17 |
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