CN109158652B - Piezoelectric type micropore vibration drilling device - Google Patents
Piezoelectric type micropore vibration drilling device Download PDFInfo
- Publication number
- CN109158652B CN109158652B CN201811301994.5A CN201811301994A CN109158652B CN 109158652 B CN109158652 B CN 109158652B CN 201811301994 A CN201811301994 A CN 201811301994A CN 109158652 B CN109158652 B CN 109158652B
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- flexible hinge
- annular flexible
- piezoelectric actuator
- device shell
- induction disc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a piezoelectric type micro-hole vibration drilling device, wherein a pretension bolt is arranged in a taper shank of a device shell, a piezoelectric actuator is arranged at the upper part of a hollow inner cavity of the device shell, the lower part of the inner cavity of the device shell is connected with an annular flexible hinge, the upper end and the lower end of the piezoelectric actuator are respectively connected with the pretension bolt and the upper end of the annular flexible hinge through an adapter, and a cutter is arranged at the lower end of the annular flexible hinge; the center of all rotating parts is on a straight line, a lower induction disc is arranged on the outer side of the device shell, an upper induction disc is arranged on a machine tool spindle, and the piezoelectric actuator is connected with the lower induction disc through a wire. According to the invention, through the coordination effect of the non-resonant piezoelectric actuator and the annular flexible hinge, axial single-frequency or multi-frequency compound vibration can be generated while high-speed rotation is generated, and the amplitude and frequency of the axial vibration are adjusted steplessly by changing the voltage signal of the induction disc according to the processing requirement, so that the processing quality is improved.
Description
Technical field:
the invention relates to drilling equipment in machining, in particular to a piezoelectric type micro-hole vibration drilling device.
The background technology is as follows:
hole processing is one of the important processes in machining. With the development of science and technology, the materials used at present develop towards high strength and high rigidity, and the precision of hole processing is also higher and higher, so the difficulty of hole processing is higher and higher. Microwell processing often becomes a process bottleneck.
A great deal of theoretical and experimental researches are carried out on the vibration drilling technology by a plurality of students at home and abroad, and the following is found: compared with the traditional machining, the chip breaking and removing effects, lubrication conditions, machining quality and the like of the vibration drilling are obviously improved. Particularly in the processing and precision machining of difficult-to-machine materials, vibration drilling has a technical effect which is incomparable with that of the traditional drilling.
At present, domestic and foreign scholars develop a plurality of devices for vibration drilling, such as mechanical, electromagnetic, hydraulic and the like, but can be truly used for small hole vibration drilling. Most of vibration drilling devices developed in China and foreign countries cannot continuously adjust vibration parameters in an electrodeless manner, or parameters are troublesome to adjust, or output resolution is not high, or the device is not suitable for micropore vibration drilling. The small-diameter deep hole ultrasonic vibration drilling device is disclosed in the patent (application number 201420309335.7, publication number CN 203900554U, publication date 2014.10.29), wherein an ultrasonic generator is connected with a carbon brush by a wire, and the carbon brush is connected with a contact of a collecting ring; the transducer is connected with the amplitude transformer, the amplitude is small, and the chip breaking is difficult.
The invention comprises the following steps:
the technical problems to be solved by the invention are as follows: overcomes the defects of the prior art, and provides a piezoelectric type micro-hole vibration drilling device which has reasonable design, simple and compact structure and convenient amplitude and frequency adjustment.
The technical scheme of the invention is as follows:
the piezoelectric type micro-hole vibration drilling device comprises a device shell, wherein the top of the device shell is a taper shank which can be connected with a machine tool spindle, a pre-tightening bolt is arranged in the taper shank, a piezoelectric actuator is arranged at the upper part of a hollow inner cavity of the device shell, the lower part of the inner cavity of the device shell is connected with an annular flexible hinge, the upper end of the piezoelectric actuator is contacted with the pre-tightening bolt through an upper adapter, the lower end of the piezoelectric actuator is connected with the upper end of the annular flexible hinge through a lower adapter, and a spring chuck and a nut for clamping a cutter are arranged at the lower end of the annular flexible hinge; the centers of the pre-tightening bolt, the piezoelectric actuator, the upper adapter, the lower adapter and the annular flexible hinge are on the same straight line, a lower induction disc is arranged on the outer side of the device shell, an upper induction disc is arranged on a machine tool spindle, and the upper induction disc and the lower induction disc are in up-down correspondence to form an energy wireless transmission mechanism; the piezoelectric actuator is connected with the lower induction disk through a wire.
A supporting frame is arranged between the piezoelectric actuator and the inner cavity wall of the device shell, so that the center of the piezoelectric actuator and the center of the device shell are in the same straight line.
The upper end of the annular flexible hinge is connected with the device shell through a screw and a cylindrical pin, the lower end of the device shell is connected with the outer ring of the protection circular ring through threads, an O-shaped ring is arranged on the inner ring of the protection circular ring, and the O-shaped ring is in sealing contact with the annular flexible hinge.
Two holes are symmetrically formed in the middle of the device shell, so that a wire of the piezoelectric actuator is connected with the energy wireless transmission mechanism through one of the holes. The annular flexible hinge is a double-row hinge, two supporting semicircular discs are arranged between the double rows, and the annular flexible hinge and the supporting semicircular discs are connected through screws and cylindrical pins.
The section of the annular flexible hinge can adopt a unilateral arc-shaped or rounded straight beam-shaped structure; the annular flexible hinge is provided with a plurality of through holes or through grooves which are uniformly distributed in the circumferential direction of the hinge part. The piezoelectric actuator adopts a stacked piezoelectric ceramic structure, works under a non-resonance condition and uses open-loop control.
The piezoelectric actuator can be loaded with single-frequency or multi-frequency voltage signals according to the requirement, single medium-low frequency vibration or medium-low frequency compound vibration is realized, the amplitude is 0-150 mu m, the stepless adjustment is realized, and the frequency range is 0-2KHz.
The beneficial effects of the invention are as follows:
1. the invention can be directly arranged on a main shaft of a machine tool, and can generate axial vibration while generating high-speed rotation through the coordination effect of the piezoelectric actuator and the annular flexible hinge, and the amplitude and the frequency of the axial vibration can be steplessly regulated through changing the voltage signal of the induction disc, so that the processing efficiency is improved, and the processing quality is improved.
2. According to the invention, the piezoelectric actuator is pre-tightened through the pre-tightening bolt, and the piezoelectric actuator is mutually connected with the pre-tightening bolt and the annular flexible hinge through the upper and lower adapter respectively, so that the axial transmission of force is ensured. In addition, a supporting frame is arranged between the piezoelectric actuator and the device shell, so that the axial precision during installation is ensured.
3. The annular flexible hinge is a double-row hinge, so that the lateral rigidity of the vibrating body can be effectively improved, and the accuracy of axial vibration is ensured. In addition, a supporting semi-disc is arranged between the double-row annular flexible hinges, so that a supporting effect is achieved.
4. The invention has simple and compact structure and convenient assembly and disassembly; the difficult chip breaking and removing problems during micro hole processing of difficult-to-process materials are effectively solved, the cooling and lubricating effects of cutting fluid are improved, the service life of a cutter is prolonged, the hole processing precision and quality are improved, the popularization and the implementation are easy, and good economic benefits are achieved.
Description of the drawings:
FIG. 1 is a schematic cross-sectional view of a piezoelectric microporous vibratory drilling apparatus;
FIG. 2 is a cross-sectional view of the structure A-A in FIG. 1.
The specific embodiment is as follows:
examples: referring to fig. 1-2, the drawings show a 1-blind rivet, a 2-device housing, a 3-pretension bolt, a 4-up adapter, a 5-piezoelectric actuator, a 6-support bracket, a 7-down adapter, an 8-annular flexible hinge, a 9-support half-disc, a 10-spring washer, a 11-screw, a 12-guard ring, a 13-O-ring, a 14-collet, a 15-nut, a 16-cutter, a 17-down-sensing disc, a 18-up-sensing disc, a 19-machine spindle, and a 20-cylindrical pin.
The piezoelectric type micropore vibration drilling device comprises a device shell 2, a piezoelectric actuator 5, an annular flexible hinge 8 and a protection ring 12; the piezoelectric actuator 5 is arranged inside the device housing 2, an induction disc device is arranged outside the device housing 2, and the annular flexible hinge 8 is connected with the lower end of the device housing 2 through an inner hexagonal flat head screw 11 and a cylindrical pin 17. The upper end of the device shell 2 is connected with a numerical control machine tool, and a spring chuck 14 and a nut 15 for clamping a cutter 16 are arranged at the lower end of the annular flexible hinge 8.
Two holes are symmetrically formed in the middle of the device housing 2, so that the circuit of the piezoelectric actuator 5 is connected with the induction disc device through one of the holes. The piezoelectric actuator 5 is preloaded by the preload bolt 3. The piezoelectric actuator 5 is coupled to the pretensioning bolt 3 and the annular flexible hinge 8 via the upper adapter 4 and the lower adapter 7, respectively, so that an axial transmission of force is ensured. A support is provided between the piezoelectric actuator 5 and the device housing 2 to ensure axial accuracy during installation.
The annular flexible hinge 8 can adopt a circular arc or rounded straight beam structure in the section of the hinge. The annular flexible hinge 8 is a double-row hinge, so that the lateral rigidity of the vibrator can be effectively improved, and the accuracy of axial vibration is ensured. A supporting semi-disc 9 is arranged between the double-row annular flexible hinges 8 to play a supporting role.
The protection ring 12 is connected with the lower end of the device shell 2 through threads, and an O-shaped ring 13 is arranged on the inner ring of the protection ring 12 to prevent sundries in the working environment from entering and damaging the annular flexible hinge.
It is necessary to ensure that the centers of the pretensioning bolt 3, the piezoelectric actuator 5, the upper adapter 4, the lower adapter 7 and the annular flexible hinge 8 are aligned.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical principles of the present invention still fall within the scope of the technical solutions of the present invention.
Claims (3)
1. A piezoelectric type micro-hole vibration drilling device comprises a device shell and is characterized in that: the top of the device shell is a taper shank which can be connected with a machine tool spindle, a pre-tightening bolt is arranged in the taper shank, a piezoelectric actuator is arranged at the upper part of a hollow inner cavity of the device shell, the lower part of the inner cavity of the device shell is connected with an annular flexible hinge, the upper end of the piezoelectric actuator is contacted with the pre-tightening bolt through an upper adapter, the lower end of the piezoelectric actuator is connected with the upper end of the annular flexible hinge through a lower adapter, and a spring chuck and a nut for clamping a cutter are arranged at the lower end of the annular flexible hinge; the centers of the pre-tightening bolt, the piezoelectric actuator, the upper adapter, the lower adapter and the annular flexible hinge are on the same straight line, a lower induction disc is arranged on the outer side of the device shell, an upper induction disc is arranged on a machine tool spindle, and the upper induction disc and the lower induction disc are in up-down correspondence to form an energy wireless transmission mechanism; the piezoelectric actuator is connected with the lower induction disc through a wire;
a supporting frame is arranged between the piezoelectric actuator and the inner cavity wall of the device shell, so that the center of the supporting frame and the center of the device shell are in the same straight line;
the upper end of the annular flexible hinge is connected with the device shell through a screw and a cylindrical pin, the lower end of the device shell is connected with the outer ring of the protection circular ring through threads, an O-shaped ring is arranged on the inner ring of the protection circular ring, and the O-shaped ring is in sealing contact with the annular flexible hinge;
the annular flexible hinge is a double-row hinge, two supporting semicircular discs are arranged between the double rows, and the annular flexible hinge is connected with the supporting semicircular discs through bolts and cylindrical pins;
the section of the annular flexible hinge can adopt a unilateral arc-shaped or rounded straight beam-shaped structure; the annular flexible hinge is provided with evenly distributed through holes or through grooves in the circumferential direction of the hinge part;
the piezoelectric actuator is loaded with single-frequency or multi-frequency voltage signals to realize single medium-low frequency vibration or medium-low frequency compound vibration, the amplitude is 0-150 mu m, and the frequency range is 0-2KHz.
2. The piezoelectric type micro-hole vibration drilling device according to claim 1, wherein: two holes are symmetrically formed in the middle of the device shell, so that a wire of the piezoelectric actuator is connected with the energy wireless transmission mechanism through one of the holes.
3. The piezoelectric type micro-hole vibration drilling device according to claim 1, wherein: the piezoelectric actuator adopts a stacked piezoelectric ceramic structure, works under a non-resonance condition and uses open-loop control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811301994.5A CN109158652B (en) | 2018-11-02 | 2018-11-02 | Piezoelectric type micropore vibration drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811301994.5A CN109158652B (en) | 2018-11-02 | 2018-11-02 | Piezoelectric type micropore vibration drilling device |
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| Publication Number | Publication Date |
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| CN109158652A CN109158652A (en) | 2019-01-08 |
| CN109158652B true CN109158652B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811301994.5A Active CN109158652B (en) | 2018-11-02 | 2018-11-02 | Piezoelectric type micropore vibration drilling device |
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| CN113406166B (en) * | 2021-06-17 | 2023-08-29 | 哈尔滨工业大学 | Electrochemical detection device based on vibration mode |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001062619A (en) * | 1999-08-31 | 2001-03-13 | Otani Kikai Seisakusho:Kk | Table type horizontal boring machine and boring bar support device |
| CN1418747A (en) * | 2002-12-26 | 2003-05-21 | 北京航空航天大学 | Method and equipment for drilling micro-holes with variable parameter vibration drill |
| KR20050108454A (en) * | 2004-05-11 | 2005-11-16 | 고등기술연구원연구조합 | A vibration cutting machine having piezoelectric actuator located parallelly |
| CN105033780A (en) * | 2015-06-23 | 2015-11-11 | 河南理工大学 | Deep cavity machining system suitable for crisp and hard materials |
| CN105499626A (en) * | 2016-01-04 | 2016-04-20 | 河南科技学院 | Compound vibration drilling device |
| CN105598507A (en) * | 2014-11-13 | 2016-05-25 | 空中客车运营有限公司 | Device for use in drilling, method for drilling, and method for preparing a workpiece or an arrangement of workpieces for drilling |
-
2018
- 2018-11-02 CN CN201811301994.5A patent/CN109158652B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001062619A (en) * | 1999-08-31 | 2001-03-13 | Otani Kikai Seisakusho:Kk | Table type horizontal boring machine and boring bar support device |
| CN1418747A (en) * | 2002-12-26 | 2003-05-21 | 北京航空航天大学 | Method and equipment for drilling micro-holes with variable parameter vibration drill |
| KR20050108454A (en) * | 2004-05-11 | 2005-11-16 | 고등기술연구원연구조합 | A vibration cutting machine having piezoelectric actuator located parallelly |
| CN105598507A (en) * | 2014-11-13 | 2016-05-25 | 空中客车运营有限公司 | Device for use in drilling, method for drilling, and method for preparing a workpiece or an arrangement of workpieces for drilling |
| CN105033780A (en) * | 2015-06-23 | 2015-11-11 | 河南理工大学 | Deep cavity machining system suitable for crisp and hard materials |
| CN105499626A (en) * | 2016-01-04 | 2016-04-20 | 河南科技学院 | Compound vibration drilling device |
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| CN109158652A (en) | 2019-01-08 |
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