CN113042782A - Ultrasonic elliptical vibration drilling device and drilling method based on workpiece two-dimensional vibration - Google Patents
Ultrasonic elliptical vibration drilling device and drilling method based on workpiece two-dimensional vibration Download PDFInfo
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- CN113042782A CN113042782A CN202110447767.9A CN202110447767A CN113042782A CN 113042782 A CN113042782 A CN 113042782A CN 202110447767 A CN202110447767 A CN 202110447767A CN 113042782 A CN113042782 A CN 113042782A
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P25/00—Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress
- B23P25/003—Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress immediately preceding a cutting tool
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Abstract
The invention relates to an ultrasonic elliptical vibration drilling device and a drilling method based on workpiece two-dimensional vibration, which comprises a machine tool body, an ampere-feed unit and a clamp unit, wherein the clamp unit comprises a base, a vibration workbench arranged on the base and a clamp arranged on the vibration workbench, an ultrasonic elliptical vibration assembly is arranged beside the vibration workbench and comprises an ultrasonic generator, a transverse longitudinal vibration transducer and a longitudinal vibration transducer, the ultrasonic generator is respectively connected with the transverse longitudinal vibration transducer and the longitudinal vibration transducer through a wave guide belt, the ultrasonic generator respectively inputs high-frequency sinusoidal excitation with the same frequency and phase difference to the transverse longitudinal vibration transducer and the longitudinal vibration transducer to ensure that the transverse longitudinal vibration transducer and the longitudinal vibration transducer generate longitudinal vibration, the device applies elliptical vibration on a workpiece and realizes the accurate control of vibration tracks by controlling the amplitude, the frequency and the like of the ultrasonic generator, thereby improving the processing quality of the drilling.
Description
Technical Field
The invention belongs to the technical field of drilling equipment, and relates to an ultrasonic elliptical vibration drilling device and method based on workpiece two-dimensional vibration.
Background
In the 90 s of the 20 th century, ultrasonic elliptical vibration cutting technology was proposed by japan scholars corporation. Compared with the common cutting, the ultrasonic elliptical vibration is two-dimensional vibration which is elliptical in the cutting plane, and a series of excellent cutting effects are generated. Numerous studies have shown that: compared with the common cutting, the ultrasonic elliptical vibration of the cutter can obviously reduce the processing defects and the cutting force and improve the plastic-brittle transition depth of the brittle material by reducing the actual chip thickness, the friction force reverse effect and the variable cutting angle/speed characteristic, and simultaneously, the influence of the inherent characteristic of the machinable material on the processing performance is reduced to the minimum, so that the processing efficiency and the surface processing quality integrity are obviously improved, the service life of the cutter is prolonged, and the stability of a processing system is improved.
Due to the excellent characteristics of two-dimensional ultrasonic vibration in processing difficult-to-process materials, many researchers have begun to explore the combination of ultrasonic elliptical vibration with other processing methods. The processing mode of ultrasonic elliptical vibration drilling is also widely researched, and meanwhile, the influence of the track in the ultrasonic elliptical vibration drilling on the processing quality is also taken into consideration. Research shows that compared with single ultrasonic vibration drilling (longitudinal vibration and torsional vibration drilling), the ultrasonic elliptical vibration drilling has more obvious improvement on drilling performance. However, in the research on ultrasonic elliptical vibration drilling, the drilling track is mainly changed through the design of the horn, and the method has the defects that the generated track is limited to the designed horn and cannot be accurately controlled.
Disclosure of Invention
The invention provides an ultrasonic elliptical vibration drilling device based on workpiece two-dimensional vibration.
The invention solves the technical problem by adopting the scheme that the ultrasonic elliptical vibration drilling device based on the two-dimensional vibration of the workpiece comprises a machine tool body, a feeding unit which is arranged on the machine tool body and is used for driving a cutter, and a clamp unit which is used for fixing the workpiece, wherein the clamp unit comprises a base, a vibration workbench which is arranged on the base, and a clamp which is arranged on the vibration workbench, an ultrasonic elliptical vibration component is arranged beside the vibration workbench, the ultrasonic elliptical vibration component comprises an ultrasonic generator, a transverse longitudinal vibration transducer which is arranged on the left side or the right side of the vibration workbench, and a longitudinal vibration transducer which is arranged on the front side or the rear side of the vibration workbench, the ultrasonic generator is respectively connected with the transverse longitudinal vibration transducer and the longitudinal vibration transducer through a guided wave band, the ultrasonic generator respectively inputs high-frequency sinusoidal excitation with the same frequency and phase difference to the transverse longitudinal vibration transducer, so that the transverse longitudinal vibration transducer and the longitudinal vibration transducer generate longitudinal vibration.
Furthermore, the transverse longitudinal vibration transducer and the longitudinal vibration transducer are all full-wavelength longitudinal vibration transducers.
Furthermore, a plurality of copper electrodes and piezoelectric ceramic pieces are distributed in the full-wavelength longitudinal vibration transducer at intervals, the polarities of the two adjacent end faces of the piezoelectric ceramic pieces are the same, the transverse longitudinal vibration transducer and the longitudinal vibration transducer are connected with the vibration workbench through a guided wave band, and due to the inverse piezoelectric effect of the transverse longitudinal vibration transducer and the longitudinal vibration transducer, the electric signal of the ultrasonic generator is converted into mechanical vibration, and the guided wave band is utilized for transmitting the vibration to the vibration workbench.
Furthermore, the feeding unit is matched with a taper hole of a machine tool spindle through a taper shank, the taper shank is used for installing the feeding unit on the machine tool spindle through the traction action of a blind rivet, a rotating shaft which is coaxial with the taper shank is fixedly installed below the taper shank, a rotating shaft spring chuck and a nut are installed at the lower end of the rotating shaft, a universal elastic chuck at the upper end of a cutter is installed at the lower end of the rotating shaft, the nut is sleeved on the cutter and locked through the nut, and a compression nut is tightly and fixedly connected with external threads at the lower end of the rotating.
An ultrasonic elliptical vibration drilling method comprises the following steps: the feeding unit drives a cutter on the feeding unit to process a workpiece on the vibration working table, high-frequency sine excitation with the same frequency and phase difference is respectively input to the transverse longitudinal vibration transducer and the longitudinal vibration transducer through the ultrasonic generator, so that the transverse longitudinal vibration transducer and the longitudinal vibration transducer generate longitudinal vibration, the longitudinal vibration transducer excites the longitudinal vibration mode of the vibration working table, the transverse longitudinal vibration transducer excites the vibration working table to generate bending vibration modes with the same frequency, and the vibration in two directions is coupled to the clamp to form an elliptical track.
Further, the elliptical trajectory is changed by changing the phase difference between the two directions emitted by the ultrasonic generator.
Compared with the prior art, the invention has the following beneficial effects: simple structure, reasonable in design, operation convenient to use, on the basis of original ordinary drilling, applys elliptical vibration on the work piece to realize the accurate control to the vibration orbit through control supersonic generator control amplitude and frequency etc. and then improve the processingquality of drilling.
Drawings
The invention is further described with reference to the following figures.
Fig. 1 is a schematic structural diagram of the device.
Fig. 2 is a schematic structural diagram of an ultrasonic elliptical vibration module.
In the figure: 1-pulling nails; 2-taper shank; 3-a rotating shaft; 4-a collet chuck; 5-a nut; 6-cutting tools; 7-vibrating the working table; 8-a base; 9-longitudinal vibration transducer; 10-guided wave band; 11-an ultrasonic generator; 12-transverse longitudinal vibration transducer.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1-2, an ultrasonic elliptical vibration drilling device based on workpiece two-dimensional vibration comprises a machine tool body, a feeding unit arranged on the machine tool body and used for driving a cutter, a clamp unit used for fixing a workpiece, wherein the clamp unit comprises a base 8, a vibration workbench 7 arranged on the base and a clamp arranged on the vibration workbench, an ultrasonic elliptical vibration component is arranged beside the vibration workbench, the ultrasonic elliptical vibration component comprises an ultrasonic generator 11, a transverse longitudinal vibration transducer 12 arranged on the left side or the right side of the vibration workbench and a longitudinal vibration transducer 9 arranged on the front side or the rear side of the vibration workbench, the ultrasonic generator is respectively connected with the transverse longitudinal vibration transducer and the longitudinal vibration transducer through a guided wave band 10, the ultrasonic generator respectively provides sinusoidal high-frequency excitation with the same input frequency and phase difference for the transverse longitudinal vibration transducer and the longitudinal vibration transducer, the transverse longitudinal vibration transducer and the longitudinal vibration transducer generate longitudinal vibration, the conductive wave band is a medium with sound transmission, and has weak coupling characteristics in a non-sound transmission direction, so that the two conductive wave bands are high in coupling efficiency in a sound transmission orthogonal direction, and the clamp can be excited to generate a longitudinal vibration mode and a bending vibration mode on the workbench.
In this embodiment, the transverse longitudinal vibration transducer and the longitudinal vibration transducer are all full-wavelength longitudinal vibration transducers.
In this embodiment, full wavelength vertical vibration transducer includes the transducer body, and transducer body front and back end is provided with front shroud, back shroud respectively, and front shroud, back shroud are connected through connecting screw, and a plurality of copper electrodes and piezoceramics piece are being distributed at the interval between front shroud, the back shroud, and front shroud, back shroud provide the pretension through connecting screw and compress tightly copper electrode and piezoceramics piece, and the polarity of the adjacent both ends face of piezoceramics is the same, and horizontal vertical vibration transducer, vertical vibration transducer are through the guided wave band connection vibration workstation, because its contrary piezoelectricity effect, convert supersonic generator's the signal of telecommunication into mechanical vibration to utilize the guided wave band transmission vibration for the vibration workstation.
In this embodiment, the feeding unit is matched with a taper hole of a machine tool spindle through a taper shank 2, the taper shank installs the feeding unit on the machine tool spindle through the traction effect of a blind rivet 1, a rotating shaft 3 which is coaxial with the taper shank is fixedly installed below the taper shank, a rotating shaft spring chuck 4 and a nut 5 are installed at the lower end of the rotating shaft, a universal elastic chuck at the upper end of a cutter 6 is installed at the lower end of the rotating shaft, the nut is sleeved on the cutter and locked through the nut, and the compression nut is tightly and fixedly connected with an external thread at the lower end of the rotating.
An ultrasonic elliptical vibration drilling method comprises the following steps: the feeding unit drives a cutter on the feeding unit to process a workpiece on the vibration working table, high-frequency sine excitation with the same frequency and phase difference is respectively input to the transverse longitudinal vibration transducer and the longitudinal vibration transducer through the ultrasonic generator, so that the transverse longitudinal vibration transducer and the longitudinal vibration transducer generate longitudinal vibration, the longitudinal vibration transducer excites the longitudinal vibration mode of the vibration working table, the transverse longitudinal vibration transducer excites the vibration working table to generate bending vibration modes with the same frequency, and the vibration in two directions is coupled to the clamp to form an elliptical track.
In the embodiment, the elliptical track is changed by changing the phase difference between two directions emitted by the ultrasonic generator so as to accurately control the elliptical track, and further, a good processing effect is realized.
If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an oval vibration drilling device of supersound based on work piece two-dimensional vibration, includes the lathe body, installs the feed unit that is used for driving the cutter on the lathe body, is used for the anchor clamps unit of fixed work piece which characterized in that: the anchor clamps unit includes the base, installs the vibration table on the base, installs the anchor clamps on vibration table, the vibration table side is provided with the oval vibration subassembly of supersound, the oval vibration subassembly of supersound includes supersonic generator, install in the horizontal transducer of indulging on vibration table left side or right side, install the vertical transducer of indulging of vibration at vibration table front side or rear side, supersonic generator connects horizontal transducer of indulging vibration, vertical transducer of indulging vibration through the guided wave band respectively, supersonic generator gives horizontal transducer of indulging vibration, vertical high-frequency sinusoidal excitation that there is the phase difference of indulging vibration transducer input frequency the same respectively for horizontal transducer of indulging vibration, vertical transducer of indulging vibration produce longitudinal vibration.
2. The ultrasonic elliptical vibration drilling device based on workpiece two-dimensional vibration of claim 1, characterized in that: and the transverse longitudinal vibration transducer and the longitudinal vibration transducer are all full-wavelength longitudinal vibration transducers.
3. The ultrasonic elliptical vibration drilling device based on workpiece two-dimensional vibration of claim 2, characterized in that: the full-wavelength longitudinal vibration transducer is internally distributed with a plurality of copper electrodes and piezoelectric ceramic pieces at intervals, the polarities of the two adjacent end faces of the piezoelectric ceramic pieces are the same, the transverse longitudinal vibration transducer and the longitudinal vibration transducer are connected with the vibration workbench through a guided wave band, and due to the inverse piezoelectric effect of the transverse longitudinal vibration transducer and the longitudinal vibration transducer, an electric signal of the ultrasonic generator is converted into mechanical vibration and the guided wave band is utilized to transmit the vibration to the vibration workbench.
4. The ultrasonic elliptical vibration drilling device based on workpiece two-dimensional vibration of claim 1, characterized in that: the feeding unit is matched with a taper hole of a machine tool spindle through a taper shank, the taper shank is used for installing the feeding unit on the machine tool spindle through the traction effect of a blind rivet, a rotating shaft which is coaxial with the taper shank is fixedly installed below the taper shank, a rotating shaft spring chuck and a nut are installed at the lower end of the rotating shaft, a universal elastic chuck at the upper end of a cutter is installed at the lower end of the rotating shaft, the nut is sleeved on the cutter and locked through the nut, and a compression nut is tightly and fixedly connected with the external thread at the lower end.
5. An ultrasonic elliptical vibration drilling method which adopts the ultrasonic elliptical vibration drilling device based on two-dimensional vibration of a workpiece according to claim 3, characterized in that: the feeding unit drives a cutter on the feeding unit to process a workpiece on the vibration working table, high-frequency sine excitation with the same frequency and phase difference is respectively input to the transverse longitudinal vibration transducer and the longitudinal vibration transducer through the ultrasonic generator, so that the transverse longitudinal vibration transducer and the longitudinal vibration transducer generate longitudinal vibration, the longitudinal vibration transducer excites the longitudinal vibration mode of the vibration working table, the transverse longitudinal vibration transducer excites the vibration working table to generate bending vibration modes with the same frequency, and the vibration in two directions is coupled to the clamp to form an elliptical track.
6. The ultrasonic elliptical vibration drilling method of claim 5, characterized in that: the elliptical trajectory is changed by changing the phase difference between the two directions emitted by the ultrasonic generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110447767.9A CN113042782A (en) | 2021-04-25 | 2021-04-25 | Ultrasonic elliptical vibration drilling device and drilling method based on workpiece two-dimensional vibration |
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| CN202110447767.9A CN113042782A (en) | 2021-04-25 | 2021-04-25 | Ultrasonic elliptical vibration drilling device and drilling method based on workpiece two-dimensional vibration |
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| CN113042782A true CN113042782A (en) | 2021-06-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113579281A (en) * | 2021-08-16 | 2021-11-02 | 深圳大学 | Micropore machining device and ultrasonic-assisted drilling system |
| CN114799246A (en) * | 2022-05-06 | 2022-07-29 | 青岛科技大学 | Multi-stage amplification two-dimensional ultrasonic cutting device with replaceable cutter |
| CN115716141A (en) * | 2022-10-28 | 2023-02-28 | 河南理工大学 | Ultrasonic drilling method suitable for machining ectopic holes of turbocharger shell |
-
2021
- 2021-04-25 CN CN202110447767.9A patent/CN113042782A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113579281A (en) * | 2021-08-16 | 2021-11-02 | 深圳大学 | Micropore machining device and ultrasonic-assisted drilling system |
| CN114799246A (en) * | 2022-05-06 | 2022-07-29 | 青岛科技大学 | Multi-stage amplification two-dimensional ultrasonic cutting device with replaceable cutter |
| CN115716141A (en) * | 2022-10-28 | 2023-02-28 | 河南理工大学 | Ultrasonic drilling method suitable for machining ectopic holes of turbocharger shell |
| CN115716141B (en) * | 2022-10-28 | 2024-06-11 | 河南理工大学 | Ultrasonic drilling method suitable for machining ectopic holes of turbocharger shell |
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