CN203610778U - Flexible hinge-parallel elliptical vibration cutting device - Google Patents
Flexible hinge-parallel elliptical vibration cutting device Download PDFInfo
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- CN203610778U CN203610778U CN201320723255.1U CN201320723255U CN203610778U CN 203610778 U CN203610778 U CN 203610778U CN 201320723255 U CN201320723255 U CN 201320723255U CN 203610778 U CN203610778 U CN 203610778U
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- flexible hinge
- hinge
- elliptical vibration
- vibration cutting
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Abstract
The utility model relates to a flexible hinge-parallel elliptical vibration cutting device, and belongs to the technical field of ultra-precision machining and processing of complex optical components made from difficult-to-cut materials. A first piezoelectric stack and a second piezoelectric stack are respectively arranged in a first hole and a second hole in an integral flexible hinge through pre-tightening screws, and a first displacement measurement baffle and a second displacement measurement baffle are respectively and fixedly connected with two displacement measurement baffle mounting holes in the integral flexible hinge; a first capacitive displacement sensor and a second capacitive displacement sensor are respectively and correspondingly arranged on a first displacement sensor holder and a second displacement sensor holder, and a diamond tool is fixedly connected with a groove at the front end of the integral flexible hinge. The flexible hinge-parallel elliptical vibration cutting device has the advantages that the elliptical orbit of a diamond tool nose in a space can be precisely realized, the parameter adjustment range is larger, and the flexible device can be arranged on any machine tool, and has certain universality.
Description
Technical field
The utility model belongs to Ultra-precision machining and the complicated optical element processing technique field of hard-cutting material, particularly relates to the parallel elliptical vibration cutting of a kind of hinge flexible apparatus.
Background technology
In recent years along with science and technology is fast-developing, some precision component applications are also more and more higher for the requirement on machining accuracy of part, the application of diamond cutter plays an important role for improving high precision part machining accuracy, but conventional machining process restriction, in processing ferrous metal material, the too fast part processing precision that caused of tool wear is difficult to improve a lot, need badly in processing method and have breakthrough for the Precision Machining of difficult-to-machine material, vibrocutting needs based on this just and produces, vibrocutting is used the vibration in process, the intermittent cutting way of its uniqueness has effectively been avoided the Fast Wearing of diamond cutter, extend the service life of cutter, improve part processing precision.
Vibrocutting was successfully applied in the cutting of difficult-to-machine material from 1966 and is subject to whole world scholar's extensive concern, but the pressing characteristic that after cutter, knife face has in process, cannot aspect prolongation cutter life, improve a lot, this English of society two professors of Nagoya University in 1993 wait people to propose first the concept of elliptical vibration cutting (Elliptical Vibration Cutting), simultaneously for such as carbide alloy of some difficult-to-machine materials etc., carry out correlation test, the result of research shows, elliptical vibration cutting can suppress the flutter in process, reduce to a great extent cutting force, reduce tool wear, extend cutter life, improve the suface processing quality of part, can test ductility cutting etc. for fragile material.
Mainly contain Japanese Kobe University and Nagoya University for the research of elliptical vibration cutting at present both at home and abroad, the Bremen university of Germany, North Carolina university of the U.S. and Northwest University, NUS, domestic Jilin University, BJ University of Aeronautics & Astronautics, The Hong Kong Polytechnic University, Xiamen University, Institutes Of Technology Of He'nan etc.What research related to mainly contains elliptical vibration cutting device, elliptical vibration cutting path, and elliptical vibration cutting is controlled, and elliptical vibration cutting difficult-to-machine material is moulded crisp transformation performance, and elliptical vibration cuts micro-groove processing performance etc.
The research of elliptical vibration cutting device is mainly divided into piezoelectric patches transducer Under Ultrasonic Vibration ejector half device and Piezoelectric Driving flexible hinge chain off-resonance type device.The former belongs to resonance type device, its main feature is can realize higher frequency in the process of processing, according to current statistics, elliptical vibration machining frequency can reach 60KHZ, but also there are some inherent defects in the elliptical vibration cutting device of resonance type, for example in process, need to realize resonance according to the intrinsic frequency of device itself, and then carry out machining, so, the frequency of processing just can not be adjusted, between each first order mode, easily produce coupling simultaneously, the difficulty of controlling is larger, so at the design aspect of device, off-resonance type elliptical vibration cutting device receives researcher's concern gradually, off-resonance type elliptical vibration cutting device is generally to drive flexible hinge to form by piezoelectric stack, the shape of flexible hinge, size and the method for salary distribution all affect to some extent on the effect of elliptical vibration cutting.Carry out the elliptical orbit of diamond synthesis point of a knife according to the method for salary distribution of flexible hinge, the elliptical vibration cutting device of design can generate two-dimentional elliptical trajectory and three-dimensional elliptical trajectory at present, the scope difference that different tracks can be processed, elliptical vibration cutting off-resonance type device is recorded according to current document, two kinds of the parallel and flexible hinge tandems by flexible hinge.
What current existing off-resonance elliptical vibration cutting device patent can be looked into has: the three-dimensional elliptical vibration cutting process of a kind of mixing that patent (CN102078967A) is mentioned, what adopt is parallel flexible hinge, adopt piezoelectric stack to drive, this parallel device is owing at right angles distributing between its each kinematic axis, easily produce sports coupling, control very difficult.The oval topping machanism that patent (CN102059575A) is mentioned, employing be in-line flexible hinge, but in design process, the quality of dynamic component is larger, is difficult to realize high frequency cutting, being limited in scope of parameter adjustment, have relatively high expectations for lathe that can match machined, do not there is generality.A kind of three-dimensional elliptical vibration cutting device that patent (CN102371359A) is mentioned has above-mentioned limitation too.
In sum, existing off-resonance elliptical vibration cutting device also exists some shortcomings.
Summary of the invention
The utility model provides the parallel elliptical vibration cutting of a kind of hinge flexible apparatus, thereby realizes the Ultra-precision machining of difficult-to-machine material.
The technical scheme that the utility model is taked is:
Piezoelectric stack one and piezoelectric stack two are arranged on hole one and the Kong Erzhong on integral type flexible hinge by pretension screw respectively, displacement measurement baffle plate one is fixedly connected with two displacement measurement baffle plate installing holes of integral type flexible hinge by trip bolt respectively with displacement measurement baffle plate two, capacitive displacement transducer one and capacitive displacement transducer two respectively correspondence are arranged on displacement transducer holder one and displacement transducer holder two, this displacement transducer holder one is fixedly connected with integral type flexible hinge outside respectively with displacement transducer holder two, diamond cutter is fixedly connected with the groove of integral type flexible hinge front end.
On integral type flexible hinge described in the utility model, two parallel flexible hinges one and flexible hinge two adopt straight circular hinges, and between four subbranches that comprise in single flexible hinge, become parallelogram to arrange, and form single-degree-of-freedom closed system.
On the utility model integral type flexible hinge, have and lathe connection holes.
The utility model adopts parallel integral type flexible hinge, reduce greatly process and assemble error, can accurately realize the elliptical orbit of diamond point of a knife in space, and parameter adjustment scope has been larger, flexible apparatus can be arranged on any lathe, has certain generality.
The utility model has the advantages that:
(1) the flexible hinge integral type that the utility model is taked processes, and overall structure is relatively simple, is easy to manufacture, and has reduced to a great extent the error causing due to assembling, and the volume of flexible apparatus is little, and quality is little, is easy to realize the high frequency processing of flexible apparatus.
(2) the utility model all adopts parallelogram flexible hinge, can fully guarantee the one-way of motion, and flexible apparatus can be arranged on arbitrary lathe by the screwed hole on base in flexible hinge 1, and applicability is stronger.
(3) the utility model is driven by two piezoelectric stacks, and what take is non-resonant mode, and elliptic parameter can drive signal to adjust the position of space ellipse by piezoelectric stack.
(4) in the utility model, two piezoelectric stacks drive and drive respectively independently flexible hinge, do not have each other coupling, can realize the control accuracy that flexible apparatus is higher.
Accompanying drawing explanation
Fig. 1 is the right axonometric drawing of the utility model entirety assembling;
Fig. 2 is the left axonometric drawing of the utility model entirety assembling;
Fig. 3 is the axonometric drawing of the utility model integral type flexible hinge;
Fig. 4 is the utility model trace generator figure;
Fig. 5 is control block diagram of the present utility model.
The specific embodiment
On integral type flexible hinge 1 described in the utility model, two parallel flexible hinges 1 and flexible hinge 2 102 adopt straight circular hinges, and between four subbranches that comprise in single flexible hinge, become parallelogram to arrange, and form single-degree-of-freedom closed system.
On the utility model integral type flexible hinge, have and lathe connection holes 106.
As depicted in figs. 1 and 2, the utility model is connected on machine tool guideway by trip bolt 11, apply driving signal to piezoelectric stack one and piezoelectric stack two, make the point of a knife of diamond cutter 2 produce the elliptic motion of high frequency, the control signal of piezoelectric stack time is as follows:
Wherein A
1, A
2for the amplitude of piezoelectric stack driving signal, w is the frequency that piezoelectric stack drives signal,
for the phase angle of piezoelectric stack driving signal.
As shown in Figure 4, two piezoelectric stacks drive signal to have certain phase difference, and in the process driving, the flexible length of piezoelectric stack there are differences, and the point of a knife of diamond cutter drives place plane to produce elliptical orbit at piezoelectric stack,
Fig. 5 has provided the control system block diagram that the utility model adopts, and wherein mainly includes: lathe, workpiece, revolution grating, interface board, diamond cutter, piezoelectric stack, power amplifier, high performance controller and capacitive displacement transducer.
According to Fig. 1-Fig. 5, the specific embodiment of device described in the utility model is as follows:
1, clamping workpiece, on the main shaft of lathe, is realized to workpiece rotary feed campaign by the revolution of main shaft, gather the transient state corner of main shaft by revolution grating.
2. the utility model is arranged on the guide rail of numerically controlled lathe, drive to two piezoelectric stacks and apply control signal, apply the parameter (amplitude of signal by adjusting piezoelectric stack, frequency and phase angle), make diamond point of a knife produce desirable elliptical orbit, generate the principal cutting movement of elliptical vibration cutting.
3. by capacitive displacement transducer, detect the actual displacement of piezoelectric stack, by feeding back to high performance controller, revise actual output displacement.
4. by controller, with realize to angle of eccentricity detect, the transient Displacements of 2 driving elements detects and the tracking control of elliptical trajectory.
Claims (3)
1. the parallel elliptical vibration cutting of a hinge flexible apparatus, it is characterized in that: piezoelectric stack one and piezoelectric stack two are arranged on hole one and the Kong Erzhong on integral type flexible hinge by pretension screw respectively, displacement measurement baffle plate one is fixedly connected with two displacement measurement baffle plate installing holes of integral type flexible hinge by trip bolt respectively with displacement measurement baffle plate two, capacitive displacement transducer one and capacitive displacement transducer two respectively correspondence are arranged on displacement transducer holder one and displacement transducer holder two, this displacement transducer holder one is fixedly connected with integral type flexible hinge outside respectively with displacement transducer holder two, diamond cutter is fixedly connected with the groove of integral type flexible hinge front end.
2. the parallel elliptical vibration cutting of a kind of hinge according to claim 1 flexible apparatus, it is characterized in that: on described integral type flexible hinge, two parallel flexible hinges one and flexible hinge two adopt straight circular hinges, and between four subbranches that comprise in single flexible hinge, become parallelogram to arrange, form single-degree-of-freedom closed system.
3. the parallel elliptical vibration cutting of a kind of hinge according to claim 1 flexible apparatus, is characterized in that: on described integral type flexible hinge, have and lathe connection holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723255.1U CN203610778U (en) | 2013-11-17 | 2013-11-17 | Flexible hinge-parallel elliptical vibration cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723255.1U CN203610778U (en) | 2013-11-17 | 2013-11-17 | Flexible hinge-parallel elliptical vibration cutting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203610778U true CN203610778U (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320723255.1U Withdrawn - After Issue CN203610778U (en) | 2013-11-17 | 2013-11-17 | Flexible hinge-parallel elliptical vibration cutting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203610778U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103611947A (en) * | 2013-11-17 | 2014-03-05 | 长春工业大学 | Hinge parallel type elliptical vibration cutting flexible device |
| CN105312679A (en) * | 2015-10-15 | 2016-02-10 | 南京航空航天大学 | Three-dimensional ultrasound elliptical vibration assisted cutting device and elliptical orbit generation method |
| CN106312658A (en) * | 2016-08-30 | 2017-01-11 | 厦门麦科普睿科技有限公司 | Inner arc surface processing device |
-
2013
- 2013-11-17 CN CN201320723255.1U patent/CN203610778U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103611947A (en) * | 2013-11-17 | 2014-03-05 | 长春工业大学 | Hinge parallel type elliptical vibration cutting flexible device |
| CN103611947B (en) * | 2013-11-17 | 2015-10-28 | 长春工业大学 | A kind of hinge parallel type elliptical vibration cutting flexible apparatus |
| CN105312679A (en) * | 2015-10-15 | 2016-02-10 | 南京航空航天大学 | Three-dimensional ultrasound elliptical vibration assisted cutting device and elliptical orbit generation method |
| CN105312679B (en) * | 2015-10-15 | 2017-08-04 | 南京航空航天大学 | Three-D ultrasonic elliptical vibration auxiliary cutting device and elliptical orbit production method |
| CN106312658A (en) * | 2016-08-30 | 2017-01-11 | 厦门麦科普睿科技有限公司 | Inner arc surface processing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140528 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |