CN104985241A - One-dimensional vibration device based on inverse piezoelectric effect of piezoelectric ceramic piece - Google Patents
One-dimensional vibration device based on inverse piezoelectric effect of piezoelectric ceramic piece Download PDFInfo
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- CN104985241A CN104985241A CN201510248325.6A CN201510248325A CN104985241A CN 104985241 A CN104985241 A CN 104985241A CN 201510248325 A CN201510248325 A CN 201510248325A CN 104985241 A CN104985241 A CN 104985241A
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- piezoelectric ceramic
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- wedge
- ceramic ring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2250/00—Compensating adverse effects during milling
- B23C2250/16—Damping vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/13—Surface milling of plates, sheets or strips
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Abstract
A one-dimensional vibration device based on the inverse piezoelectric effect of a piezoelectric ceramic piece belongs to the technical field of energy assistedmachining, and aims at solving the problems that when a thin-wall micro component in the existing high-precision inertial navigation sensor is processed, the used one-dimensional vibration device has a nonadjustable frequency in resonant mode vibration, tool lines are littery and uneven in depths, and the residual stress is large. A first bolt of the one-dimensional vibration device penetrates through a through hole in a workbench left side plate, a left side first piezoelectric ceramic ring group, a through hole of a vibration platform, a right side first piezoelectric ceramic ring group and a first spherical washer to be in threaded fastening connection with a threaded hole of a workbench right side plate; and a second bolt penetrates through a through hole of the workbench left side plate, a left side second piezoelectric ceramic ring group, a through hole of the vibration platform, a right side second piezoelectric ceramic ring group and a second spherical washer to be in threaded fastening connection with a threaded hole of the workbench right side plate. According to the invention, the inverse piezoelectric effect of piezoelectric ceramic is utilized, the vibration platform is pushed to move towards one direction, and the vibration frequency is adjustable.
Description
Technical field
The invention belongs to the technical field of power assist machining.
Background technology
Thin-walled micro structures is the core component in High Accuracy Inertial sensor, its crudy directly affects navigation accuracy, because its characteristic size is micron order, current reasonable way is exactly adopt the processing mode of minuteness milling to process, but in the process of reality, due to minuteness milling process, the rigidity of cutting tool is very low, working angles is complicated, in the processing mode of conventional micro-milling, tool wear is serious, directly cause machined surface quality poor, yield rate ground is low, the auxiliary micro-milling of vibration can well be able to suppress the regeneration chatter produced in working angles, the prolongation of vibrocutting to cutter life also has certain effect in addition, good improvement result is had to machined surface quality and residual stress, thus there is important research meaning.
Existing one dimension vibrating device mainly comprises resonance type vibration and disresonance type vibration.The feature of resonance type vibration is that frequency is non-adjustable, and the change of vibration processes medium velocity moment, therefore use occasion is very limited, and when being applied to vibration assisted machining, machined surface quality is poor, and the knife mark of formation is mixed and disorderly, and deep mixed, residual stress is large.
Summary of the invention
The object of this invention is to provide a kind of one dimension vibrating device based on piezoelectric ceramic piece inverse piezoelectric effect, add man-hour to solve thin-walled micro structures in existing High Accuracy Inertial sensor, the feature that one dimension vibrating device used exists resonance type vibration is that frequency is non-adjustable, and the vibration processes medium velocity moment changes, and the problem that knife mark is mixed and disorderly, deep mixed and residual stress is large.
Described object is realized by following scheme: described a kind of one dimension vibrating device based on piezoelectric ceramic piece inverse piezoelectric effect, and it comprises left side the first piezoelectric ceramic ring group 1, left side second piezoelectric ceramic ring group 2, right side first piezoelectric ceramic ring group 3, right side second piezoelectric ceramic ring group 4, first spheric washer 5, second spheric washer 6, shake table 7, first bolt 8, second bolt 9, wedge motion block 10, workbench left plate 11, workbench right plate 12, workbench base plate 13, wedge determine block 14;
Through hole 11-1 and through hole 11-2 is horizontally had between on the left surface of workbench left plate 11 and on right flank, screwed hole 12-1 and screwed hole 12-2 is horizontally had between on the left surface of workbench right plate 12 and on right flank, through hole 7-1 and through hole 7-2 is horizontally had between on the left surface of shake table 7 and on right flank, the upper surface of shake table 7 has the groove 7-3 for clamping workpiece to be machined 15, first bolt 8 is through the through hole 11-1 of workbench left plate 11, left side the first piezoelectric ceramic ring group 1, the through hole 7-1 of shake table 7, right side the first piezoelectric ceramic ring group 3 is connected with the screwed hole 12-1 screw threads for fastening of workbench right plate 12 with after the first spheric washer 5, second bolt 9 is through the through hole 11-2 of workbench left plate 11, left side the second piezoelectric ceramic ring group 2, the through hole 7-2 of shake table 7, right side the second piezoelectric ceramic ring group 4 is connected with the screwed hole 12-2 screw threads for fastening of workbench right plate 12 with after the second spheric washer 6, workbench left plate 11 and workbench right plate 12 are all arranged on workbench base plate 13, workbench left plate 11 and workbench right plate 12 are parallel to each other, make the axial line of the axial line of the first bolt 8 and the second bolt 9 parallel to each other and be in same horizontal plane, it is identical with the angle of the low-angle acute angle of wedge motion block 10 that wedge determines the angle of the low-angle acute angle of block 14, the length that wedge determines block 14 is less than the length of wedge motion block 10, wedge determines block 14 and wedge motion block 10 is all arranged in the groove 7-3 of shake table 7, the left surface that wedge is determined in the long right-angle surface of block 14 and the groove 7-3 of shake table 7 is fixedly connected with, the inclined-plane on inclined-plane and wedge motion block 10 that wedge determines block 14 is slidably connected, and it is parallel with the long right-angle surface of wedge motion block 10 to make wedge determine the long right-angle surface of block 14, when the long right-angle surface of wedge motion block 10 is parallel move right time can clamp workpiece to be machined 15 between the right flank that is arranged in the long right-angle surface of wedge motion block 10 and the groove 7-3 of shake table 7, the alternating electric field phase 180 ° that wherein, the first piezoelectric ceramic ring group 1 and left side second piezoelectric ceramic ring group 2 apply with right side first piezoelectric ceramic ring group 3 and piezoelectric ceramic ring group 4 two ends, right side second.
Hinge structure of the present invention has following beneficial effect:
1, present invention utilizes the inverse piezoelectric effect of piezoelectric ceramics, phase 180 ° of alternating voltages that two ends, shake table left and right piezoelectric ceramics applies, make two ends, left and right produce the stress of equidirectional, promote shake table and move to a direction, and the frequency of vibration can regulate;
2, the present invention can adjust the amplitude of one-dimensional platform by adjustment alternating voltage amplitude, can be adjusted the vibration frequency of shaking platform by the frequency adjusting alternating voltage;
3, be provided with self-locking clamping device in the present invention, getting loose of workpiece on shake table can not be caused because of vibration, also can reduce alignment error simultaneously;
4, in the middle of the piezoelectric ceramics in the present invention and workbench side plate, spheric washer has been installed, the elasticity of spheric washer so both can have been utilized to absorb processing and the alignment error of side plate, can increase frictional force again, being subject to axial stress at bolt is prevent bolt from getting loose simultaneously.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the plan structure schematic diagram of Fig. 1.
Detailed description of the invention
Detailed description of the invention one: shown in composition graphs 1, Fig. 2, it comprises left side the first piezoelectric ceramic ring group 1, left side second piezoelectric ceramic ring group 2, right side first piezoelectric ceramic ring group 3, right side second piezoelectric ceramic ring group 4, first spheric washer 5, second spheric washer 6, shake table 7, first bolt 8, second bolt 9, wedge motion block 10, workbench left plate 11, workbench right plate 12, workbench base plate 13, wedge determine block 14;
Through hole 11-1 and through hole 11-2 is horizontally had between on the left surface of workbench left plate 11 and on right flank, screwed hole 12-1 and screwed hole 12-2 is horizontally had between on the left surface of workbench right plate 12 and on right flank, through hole 7-1 and through hole 7-2 is horizontally had between on the left surface of shake table 7 and on right flank, the upper surface of shake table 7 has the groove 7-3 for clamping workpiece to be machined 15, first bolt 8 is through the through hole 11-1 of workbench left plate 11, left side the first piezoelectric ceramic ring group 1, the through hole 7-1 of shake table 7, right side the first piezoelectric ceramic ring group 3 is connected with the screwed hole 12-1 screw threads for fastening of workbench right plate 12 with after the first spheric washer 5, second bolt 9 is through the through hole 11-2 of workbench left plate 11, left side the second piezoelectric ceramic ring group 2, the through hole 7-2 of shake table 7, right side the second piezoelectric ceramic ring group 4 is connected with the screwed hole 12-2 screw threads for fastening of workbench right plate 12 with after the second spheric washer 6, workbench left plate 11 and workbench right plate 12 are all arranged on workbench base plate 13, workbench left plate 11 and workbench right plate 12 are parallel to each other, make the axial line of the axial line of the first bolt 8 and the second bolt 9 parallel to each other and be in same horizontal plane, it is identical with the angle of the low-angle acute angle of wedge motion block 10 that wedge determines the angle of the low-angle acute angle of block 14, the length that wedge determines block 14 is less than the length of wedge motion block 10, wedge determines block 14 and wedge motion block 10 is all arranged in the groove 7-3 of shake table 7, the left surface that wedge is determined in the long right-angle surface of block 14 and the groove 7-3 of shake table 7 is fixedly connected with, the inclined-plane on inclined-plane and wedge motion block 10 that wedge determines block 14 is slidably connected, and it is parallel with the long right-angle surface of wedge motion block 10 to make wedge determine the long right-angle surface of block 14, when the long right-angle surface of wedge motion block 10 is parallel move right time can clamp workpiece to be machined 15 between the right flank that is arranged in the long right-angle surface of wedge motion block 10 and the groove 7-3 of shake table 7, the alternating electric field phase 180 ° that wherein, the first piezoelectric ceramic ring group 1 and left side second piezoelectric ceramic ring group 2 apply with right side first piezoelectric ceramic ring group 3 and piezoelectric ceramic ring group 4 two ends, right side second.
Described left side first piezoelectric ceramic ring group 1, left side second piezoelectric ceramic ring group 2, right side first piezoelectric ceramic ring group 3 and right side second piezoelectric ceramic ring group 4 are all superposed by multi-disc ring-shaped piezo ceramic sheet and form.The model of described ring-shaped piezo ceramic sheet is P51.The operating frequency of described ring-shaped piezo ceramic sheet is at 500Hz ~ 20KHz.
Operation principle: workpiece to be machined 15 is clamped between the right flank in the long right-angle surface of wedge motion block 10 and the groove 7-3 of shake table 7, then alternating electric field is applied at left side piezoelectric ceramics and piezoelectric ceramics two ends, right side, the alternating electric field phase 180 ° that wherein, the first piezoelectric ceramic ring group 1 and left side second piezoelectric ceramic ring group 2 apply with right side first piezoelectric ceramic ring group 3 and piezoelectric ceramic ring group 4 two ends, right side second, in the piezoelectric ceramics of such both sides, (shortening) is extended in a meeting, another then can shorten (elongation), be equivalent to piezoelectric ceramics series connection, the two common clamping device that drives is to the direction motion being parallel to bolt axis, regular periodic vibration will be produced after applying alternating voltage, because piezoelectric ceramics is a kind of elastomer, it obeys Hooke's law: " in elastic limits, stress and strain is directly proportional ".At electric field be
ethe elongation of effect lower piezoelectric pottery
s=dE, wherein
dit is piezoelectric constant.During non-Simple harmonic electric vibration auxiliary milling, cutter is according to normal milling mode milling, shake table clamping is on horizontal movement platform, make Tool in Cutting vestige neat unlike track during common micro-milling owing to vibrating the auxiliary membership that adds, but be that non-Simple harmonic electric vibration applications Cutting trajectory when vibrating in assisted machining is mutually interfered and produces Repeated Cutting effect, Tool in Cutting vestige is shoaled, thus reduce to participate in stress, this class methods measurement category is wider, for the whole finished surface of evaluation, reduce the working plasticity distortion of material, reduce metamorphic layer thickness, thus improve suface processing quality to a great extent.
Detailed description of the invention two: shown in composition graphs 1, Fig. 2, this detailed description of the invention increases on the basis of detailed description of the invention one to be had locking jackscrew 16 and unlocks jackscrew 17; The sidewall apical grafting that locking jackscrew 16 is threaded through shake table 7 in the short right-angle surface of wedge motion block 10, for holding out against wedge motion block 10 and to prevent wedge motion block 10 from falling back loosening; Unlock another side sidewall apical grafting that jackscrew 17 is threaded through shake table 7 on the low-angle acute angle of wedge motion block 10, for making wedge motion block 10.
Claims (2)
1., based on an one dimension vibrating device for piezoelectric ceramic piece inverse piezoelectric effect, it is characterized in that it comprises left side the first piezoelectric ceramic ring group (1), left side second piezoelectric ceramic ring group (2), right side first piezoelectric ceramic ring group (3), right side second piezoelectric ceramic ring group (4), the first spheric washer (5), the second spheric washer (6), shake table (7), the first bolt (8), the second bolt (9), wedge motion block (10), workbench left plate (11), workbench right plate (12), workbench base plate (13), wedge determine block (14);
Through hole (11-1) and through hole (11-2) is horizontally had between on the left surface of workbench left plate (11) and on right flank, screwed hole (12-1) and screwed hole (12-2) is horizontally had between on the left surface of workbench right plate (12) and on right flank, through hole (7-1) and through hole (7-2) is horizontally had between on the left surface of shake table (7) and on right flank, the upper surface of shake table (7) has the groove (7-3) for clamping workpiece to be machined (15), first bolt (8) is through the through hole (11-1) of workbench left plate (11), left side the first piezoelectric ceramic ring group (1), the through hole (7-1) of shake table (7), right side the first piezoelectric ceramic ring group (3) is connected with screwed hole (12-1) screw threads for fastening of workbench right plate (12) afterwards with the first spheric washer (5), second bolt (9) is through the through hole (11-2) of workbench left plate (11), left side the second piezoelectric ceramic ring group (2), the through hole (7-2) of shake table (7), right side the second piezoelectric ceramic ring group (4) is connected with screwed hole (12-2) screw threads for fastening of workbench right plate (12) afterwards with the second spheric washer (6), workbench left plate (11) and workbench right plate (12) are all arranged on workbench base plate (13), workbench left plate (11) and workbench right plate (12) are parallel to each other, make the axial line of the axial line of the first bolt (8) and the second bolt (9) parallel to each other and be in same horizontal plane, the angle that wedge determines the low-angle acute angle of block (14) is identical with the angle of the low-angle acute angle of wedge motion block (10), the length that wedge determines block (14) is less than the length of wedge motion block (10), wedge determines block (14) and wedge motion block (10) is all arranged in the groove (7-3) of shake table (7), the left surface that wedge is determined in the long right-angle surface of block (14) and the groove (7-3) of shake table (7) is fixedly connected with, the inclined-plane on inclined-plane and wedge motion block (10) that wedge determines block (14) is slidably connected, and it is parallel with the long right-angle surface of wedge motion block (10) to make wedge determine the long right-angle surface of block (14), when the long right-angle surface of wedge motion block (10) is parallel move right time can clamp in the groove (7-3) of long right-angle surface and the shake table (7) being arranged on wedge motion block (10) between right flank workpiece to be machined (15), the alternating electric field phase 180 ° that wherein, the first piezoelectric ceramic ring group (1) and left side second piezoelectric ceramic ring group (2) apply with right side first piezoelectric ceramic ring group (3) and piezoelectric ceramic ring group (4) two ends, right side second.
2. a kind of one dimension vibrating device based on piezoelectric ceramic piece inverse piezoelectric effect according to claim 1, is characterized in that its increase has locking jackscrew (16) and unlocks jackscrew (17); The sidewall apical grafting that locking jackscrew (16) is threaded through shake table (7) in the short right-angle surface of wedge motion block (10), for holding out against wedge motion block (10) and preventing wedge motion block (10) from falling back loosening; Unlock another side sidewall apical grafting that jackscrew (17) is threaded through shake table (7) on the low-angle acute angle of wedge motion block (10), for making wedge motion block (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510248325.6A CN104985241B (en) | 2015-05-16 | 2015-05-16 | A kind of one-dimensional vibrating device based on piezoelectric ceramic piece inverse piezoelectric effect |
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| CN201510248325.6A CN104985241B (en) | 2015-05-16 | 2015-05-16 | A kind of one-dimensional vibrating device based on piezoelectric ceramic piece inverse piezoelectric effect |
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| CN104985241A true CN104985241A (en) | 2015-10-21 |
| CN104985241B CN104985241B (en) | 2017-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106945782A (en) * | 2017-04-10 | 2017-07-14 | 江苏科技大学 | The drag reduction surface under water and preparation method of a kind of imitative filefish epidermis morphology |
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| US4764244A (en) * | 1985-06-11 | 1988-08-16 | The Foxboro Company | Resonant sensor and method of making same |
| US20050169107A1 (en) * | 2003-03-06 | 2005-08-04 | Thomenius Kai E. | Switching circuitry for reconfigurable arrays of sensor elements |
| CN102873019A (en) * | 2012-09-29 | 2013-01-16 | 中北大学 | High-speed rotary ultrasonic torsional processing device |
| WO2013086083A1 (en) * | 2011-12-07 | 2013-06-13 | Georgia Tech Research Corporation | Packaging compatible wafer level capping of mems devices |
| KR20140118399A (en) * | 2013-03-29 | 2014-10-08 | 부산대학교 산학협력단 | Micro machining apparatus |
| CN104440140A (en) * | 2014-12-09 | 2015-03-25 | 苏州科技学院 | Single electrical signal excitation ultrasonic elliptic vibration micro-machining working platform |
-
2015
- 2015-05-16 CN CN201510248325.6A patent/CN104985241B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4764244A (en) * | 1985-06-11 | 1988-08-16 | The Foxboro Company | Resonant sensor and method of making same |
| US20050169107A1 (en) * | 2003-03-06 | 2005-08-04 | Thomenius Kai E. | Switching circuitry for reconfigurable arrays of sensor elements |
| WO2013086083A1 (en) * | 2011-12-07 | 2013-06-13 | Georgia Tech Research Corporation | Packaging compatible wafer level capping of mems devices |
| CN102873019A (en) * | 2012-09-29 | 2013-01-16 | 中北大学 | High-speed rotary ultrasonic torsional processing device |
| KR20140118399A (en) * | 2013-03-29 | 2014-10-08 | 부산대학교 산학협력단 | Micro machining apparatus |
| CN104440140A (en) * | 2014-12-09 | 2015-03-25 | 苏州科技学院 | Single electrical signal excitation ultrasonic elliptic vibration micro-machining working platform |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106945782A (en) * | 2017-04-10 | 2017-07-14 | 江苏科技大学 | The drag reduction surface under water and preparation method of a kind of imitative filefish epidermis morphology |
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