A polarization platform device for a spiral electrode piezoelectric actuator

Abstract

The present invention belongs to the technical field of piezoelectric ceramic polarization, and particularly relates to a polarization platform device for a spiral electrode piezoelectric actuator, which comprises a bottom plate, a top plate, a first column, a second column, a third column, a fourth column, a first limiting component and a second limiting component. The first limiting component is arranged on the upper surface of the bottom plate, and the second limiting component is arranged on the lower surface of the top plate. The first limiting component and the second limiting component have the same structure and are coaxially installed. During specific use, it can automatically position and clamp piezoelectric actuators with different diameters and different thicknesses of special-shaped electrodes, has high positioning accuracy for the piezoelectric actuator, perfect high-voltage protection measures, and is simple to operate, meeting the usage requirements of people for the polarization platform device of the spiral electrode piezoelectric actuator.

Description

Technical Field

[0001] The invention belongs to the technical field of piezoelectric ceramic polarization, and particularly relates to a polarization platform device for a spiral electrode piezoelectric actuator. Background Art

[0002] Most of the piezoelectric actuators with torsional drive functions currently available on the market utilize mechanical conversion devices to convert the radial or axial drive of the piezoelectric actuator into torsional drive. The addition of mechanical conversion devices not only increases the mechanical size of the piezoelectric actuator but also reduces the drive efficiency. Since the spiral electrode piezoelectric actuator not only has a torsional drive function but also has a simple structure, high torsional drive efficiency, is easy to integrate and miniaturize production, and is well-suited for precision micro-drive applications.

[0003] The spiral electrode piezoelectric actuator needs to be polarized before it has drive performance. Currently, there is little research on the polarization platform device for the spiral electrode piezoelectric actuator on the market. When using the polarization platform device of traditional piezoelectric elements to polarize the spiral electrode piezoelectric actuator, not only is the positioning accuracy low, the high-voltage protection measures are imperfect, but also the types of polarization electrode structures are limited, and the polarization efficiency far cannot meet the requirements. Summary of the Invention

[0004] To achieve the above object, the technical solution of the present invention is: a polarization platform device for a spiral electrode piezoelectric actuator, including a bottom plate, a top plate, a first column, a second column, a third column, a fourth column, a first limiting component and a second limiting component. The first limiting component is arranged on the upper surface of the bottom plate, and the second limiting component is arranged on the lower surface of the top plate. The first limiting component and the second limiting component have the same structure and are coaxially installed. Both the first limiting component and the second limiting component include a first wiring terminal, a second wiring terminal, a first T-shaped slideway, a second T-shaped slideway, a third T-shaped slideway, a fourth T-shaped slideway, a first radial return spring, a second radial return spring, a third radial return spring, a fourth radial return spring, a first radial retaining nut, a second radial retaining nut, a third radial retaining nut, a fourth radial retaining nut, a first radial positioning block, a second radial positioning block, a third radial positioning block, a fourth radial positioning block, a special-shaped electrode mold, and a cross positioning shaft. The first T-shaped slideway and the second T-shaped slideway are a group and are arranged in parallel. The third T-shaped slideway and the fourth T-shaped slideway are a group and are arranged in parallel. The two groups of T-shaped slideways are perpendicularly opened on the bottom plate. The lower T-shaped positioning feet of the first radial positioning block and the third radial positioning block are respectively slidably connected to the third T-shaped slideway and the fourth T-shaped slideway. The lower T-shaped positioning feet of the second radial positioning block and the fourth radial positioning block are respectively slidably connected to the first T-shaped slideway and the second T-shaped slideway. The cross positioning shaft is fixedly installed at the geometric center of the bottom plate. The first positioning shaft of the cross positioning shaft respectively passes through the middle positioning through holes of the first radial positioning block, the first radial return spring and is bolted to the first radial retaining nut. The second positioning shaft of the cross positioning shaft respectively passes through the middle positioning through holes of the second radial positioning block, the second radial return spring and is bolted to the second radial retaining nut. The third positioning shaft of the cross positioning shaft respectively passes through the middle positioning through holes of the third radial positioning block, the third radial return spring and is bolted to the third radial retaining nut. The fourth positioning shaft of the cross positioning shaft respectively passes through the middle positioning through holes of the fourth radial positioning block, the fourth radial return spring and is bolted to the fourth radial retaining nut. The upper parts of the first radial positioning block, the second radial positioning block, the third radial positioning block and the fourth radial positioning block clamp the special-shaped electrode mold. The first wiring terminal and the second wiring terminal are fixedly connected to the bottom plate. The first column, the second column, the third column and the fourth column pass through the top plate and are fixedly connected to the bottom plate.

[0005] Arc grooves are provided at the upper ends of the first radial positioning block, the second radial positioning block, the third radial positioning block and the fourth radial positioning block.

[0006] First through holes, second through holes, third through holes and fourth through holes are provided on the top plate.

[0007] The sides of the first through hole, the second through hole, the third through hole, and the fourth through hole are provided with a first threaded through hole, a second threaded through hole, a third threaded through hole, and a fourth threaded through hole.

[0008] The first locking nut, the second locking nut, the third locking nut, and the fourth locking nut are installed in the first threaded through hole, the second threaded through hole, the third threaded through hole, and the fourth threaded through hole. By tightening or loosening the first locking nut, the second locking nut, the third locking nut, and the fourth locking nut, the up and down movement of the top plate along the first column, the second column, the third column, and the fourth column can be realized.

[0009] A metal wire is welded to the first terminal. One end of the metal wire is electrically connected to the positive pole of the DC power supply, and the other end is electrically connected to the metal electrode laid in the positive electrode groove of the special-shaped electrode mold.

[0010] A metal wire is welded to the second terminal. One end of the metal wire is electrically connected to the negative pole of the DC power supply, and the other end is electrically connected to the metal electrode laid in the negative electrode groove of the special-shaped electrode mold.

[0011] The bottom plate, the top plate, the first column, the second column, the third column, the fourth column, the first limiting component, the second limiting component, the first locking nut, the second locking nut, the third locking nut, and the fourth locking nut are all made of polytetrafluoroethylene.

[0012] The first terminal, the second terminal, and the metal electrodes laid in the positive electrode groove and the negative electrode groove are made of conductive silver.

[0013] The positive and negative electrode grooves on the special-shaped electrode mold can be preset according to the different electrode structure forms of the spiral electrode piezoelectric actuator.

[0014] The core of the present invention is to provide a polarization platform device for a spiral electrode piezoelectric actuator, which can automatically position and clamp special-shaped electrode piezoelectric actuators with different diameters and different thicknesses during specific use, has high positioning accuracy for the piezoelectric actuator, perfect high-voltage protection measures, and is easy to operate, meeting the usage requirements of people for the polarization platform device of the spiral electrode piezoelectric actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is a schematic structural diagram of the first limiting component;

[0017] Figure 3 is a top view of the first limiting component;

[0018] Figure 4 is a schematic structural diagram of the bottom plate and the cross positioning shaft;

[0019] Figure 5 It is a schematic diagram of the radial positioning block structure;

[0020] Figure 6 It is a schematic diagram of the top plate structure;

[0021] Figure 7 It is a schematic diagram of the special-shaped electrode mold structure;

[0022] The reference numerals in the figure are: 1-bottom plate, 2-top plate, 3-first column, 4-second column, 5-third column, 6-fourth column, 7-first limit component, 8-second limit component, 9-first wiring terminal, 10-second wiring terminal, 11-first T-shaped slideway, 12-second T-shaped slideway, 13-third T-shaped slideway, 14-fourth T-shaped slideway, 15-first radial return spring, 16-second radial return spring, 17-third radial return spring, 18-fourth radial return spring, 19-first radial blocking nut, 20-second radial blocking nut, 21-third radial blocking nut, 22-fourth radial blocking nut, 23-first radial positioning block, 24-second radial positioning block, 25-third radial positioning block, 26-fourth radial positioning block, 27-special-shaped electrode mold, 28-cross positioning shaft, 29-T-shaped positioning foot, 30-first positioning shaft, 31-second positioning shaft, 33-third positioning shaft, 34-positioning through hole, 35-arc groove, 36-first through hole, 37-second through hole, 38-third through hole, 39-fourth through hole, 40-first threaded through hole, 41-second threaded through hole, 42-third threaded through hole, 43-fourth threaded through hole, 44-first locking nut, 45-second locking nut, 46-third locking nut, 47-and fourth locking nut, 48-positive electrode groove, 49-negative electrode groove, Detailed implementation method

[0023] The core of the present invention is to provide a polarization platform device for a spiral electrode piezoelectric actuator, which can automatically position and clamp special-shaped electrode piezoelectric actuators with different diameters and different thicknesses during specific use, has high positioning accuracy for the piezoelectric actuator, perfect high-voltage protection measures, and is easy to operate, meeting people's usage requirements for the polarization platform device of the spiral electrode piezoelectric actuator. In order to enable those skilled in the art to better understand the technical solution of the present invention, the following is combined with the attached Figures 1 to 7 Make a further description of the present invention.

[0024] Specific Embodiment 1: A polarization platform device for a spiral electrode piezoelectric actuator, comprising a bottom plate 1, a top plate 2, a first column 3, a second column 4, a third column 5, a fourth column 6, a first limiting component 7, and a second limiting component 8. The first limiting component 7 is arranged on the upper surface of the bottom plate 1, and the second limiting component 8 is arranged on the lower surface of the top plate 2. The first limiting component 7 and the second limiting component 8 have the same structure and are coaxially installed. Both the first limiting component 7 and the second limiting component 8 include a first wiring post 9, a second wiring post 10, a first T-shaped slideway 11, a second T-shaped slideway 12, a third T-shaped slideway 13, a fourth T-shaped slideway 14, a first radial return spring 15, a second radial return spring 16, a third radial return spring 17, a fourth radial return spring 18, a first radial retaining nut 19, a second radial retaining nut 20, a third radial retaining nut 21, a fourth radial retaining nut 22, a first radial positioning block 23, a second radial positioning block 24, a third radial positioning block 25, a fourth radial positioning block 26, a special-shaped electrode mold 27, and a cross positioning shaft 28. The first T-shaped slideway 11 and the second T-shaped slideway 12 are a set and are arranged in parallel. The third T-shaped slideway 13 and the fourth T-shaped slideway 14 are a set and are arranged in parallel. The two sets of T-shaped slideways are perpendicularly formed on the bottom plate 1. The lower T-shaped positioning feet 29 of the first radial positioning block 23 and the third radial positioning block 25 are respectively slidably connected to the third T-shaped slideway 13 and the fourth T-shaped slideway 14. The lower T-shaped positioning feet 29 of the second radial positioning block 24 and the fourth radial positioning block 26 are respectively slidably connected to the first T-shaped slideway 11 and the second T-shaped slideway 12. The cross positioning shaft 28 is fixedly installed at the geometric center of the bottom plate 1. The first positioning shaft 30 of the cross positioning shaft 28 respectively passes through the middle positioning through hole 34 of the first radial positioning block 23, the first radial return spring 15 and is bolted to the first radial retaining nut 19. The second positioning shaft 31 of the cross positioning shaft 28 respectively passes through the middle positioning through hole 34 of the second radial positioning block 24, the second radial return spring 16 and is bolted to the second radial retaining nut 20. The third positioning shaft 32 of the cross positioning shaft 28 respectively passes through the middle positioning through hole 34 of the third radial positioning block 25, the third radial return spring 17 and is bolted to the third radial retaining nut 21. The fourth positioning shaft 33 of the cross positioning shaft 28 respectively passes through the middle positioning through hole 34 of the fourth radial positioning block 26, the fourth radial return spring 18 and is bolted to the fourth radial retaining nut 22. By applying pressure through the radial return spring, the arc grooves 35 formed at the upper ends of the radial positioning blocks are tightly fitted with the special-shaped electrode mold 27 to prevent the special-shaped electrode mold 27 from loosening and improve the stability of the polarization work. The first wiring post 9 and the second wiring post 10 are fixedly connected to the bottom plate 1 for the welding positioning of metal wires to avoid human and machine casualties caused by metal wire short circuits.The described first column 3, second column 4, third column 5, and fourth column 6 pass through the top plate 2 and are fixedly connected to the bottom plate 1, enabling the coaxial operation of the first limiting component 7 on the upper surface of the bottom plate 1 and the second limiting component 8 on the lower surface of the top plate 2. The top plate 2 is provided with a first through hole 36, a second through hole 37, a third through hole 38, and a fourth through hole 39. The sides of the first through hole 36, second through hole 37, third through hole 38, and fourth through hole 39 are provided with a first threaded through hole 40, a second threaded through hole 41, a third threaded through hole 42, and a fourth threaded through hole 43. The first threaded through hole 40, second threaded through hole 41, third threaded through hole 42, and fourth threaded through hole 43 are internally installed with a first locking nut 44, a second locking nut 45, a third locking nut 46, and a fourth locking nut 47. By tightening or loosening the first locking nut 44, second locking nut 45, third locking nut 46, and fourth locking nut 47, the up and down movement of the top plate 2 along the first column 3, second column 4, third column 5, and fourth column 6 can be realized, enabling the polarization platform device to polarize polarization objects of different thicknesses, expanding the working range. A metal wire is welded to the first terminal 9. One end of the metal wire is electrically connected to the positive electrode of the DC power supply, and the other end is electrically connected to the metal electrode laid in the positive electrode groove 48 of the special-shaped electrode mold 27. A metal wire is welded to the second terminal 10. One end of the metal wire is electrically connected to the negative electrode of the DC power supply, and the other end is electrically connected to the metal electrode laid in the negative electrode groove 49 of the special-shaped electrode mold 27. While effectively providing the polarization voltage, it prevents the short-circuit phenomenon caused by the contact of the positive and negative metal wires during the polarization process. The bottom plate 1, top plate 2, first column 3, second column 4, third column 5, fourth column 6, first limiting component 7, second limiting component 8, special-shaped electrode mold 27, first locking nut 44, second locking nut 45, third locking nut 46, and fourth locking nut 47 are all made of polytetrafluoroethylene and can be used for a long time at -180 to 260 °C, suitable for high-temperature oil bath polarization. The metal materials of the first terminal 9 and the second terminal 10 are the same as the metal electrode materials laid in the positive electrode groove 48 and the negative electrode groove 49, which are conductive silver, with good conductive effects and stable performance during high-temperature polarization. The positive electrode groove 48 and the negative electrode groove 49 on the special-shaped electrode mold 27 can be preset according to the different electrode structure forms of the spiral electrode piezoelectric actuator to meet the working requirements.

[0025] The specific use process of the present invention is as follows: Metal electrodes are embedded in the positive electrode groove 48 and the negative electrode groove 49 of the pre-processed special-shaped electrode mold 27. The first radial positioning blocks 23, the second radial positioning blocks 24, the third radial positioning blocks 25, and the fourth radial positioning blocks 26 of the first limiting component 7 on the upper surface of the bottom plate 1 are adjusted, and the prepared special-shaped electrode mold 27 is loaded. The special-shaped electrode mold 27 is loaded on the lower surface of the top plate 2 of the second limiting component 8 in the same way. The spiral electrode piezoelectric actuator to be polarized is placed on the special-shaped electrode mold 27 of the bottom plate 1 according to the electrode pattern. The first locking nut 44, the second locking nut 45, the third locking nut 46, and the fourth locking nut 47 are adjusted so that the special-shaped electrode mold 27 of the second limiting component 8 fits with the spiral electrode piezoelectric actuator to be polarized, and a certain pressure is maintained to prevent the spiral electrode piezoelectric actuator to be polarized from falling off. The two ends of the metal wires welded on the first terminal 9 and the second terminal 10 are respectively electrically connected to the output terminals of the DC power supply of the same polarity and the metal electrodes embedded in the electrode grooves. At room temperature, the polarization platform of the present invention is placed in an oil bath tank. When the silicone oil is heated to the polarization temperature, the DC power supply switch is turned on, the polarization voltage is set, and after maintaining the continuous output of the DC voltage according to the required polarization time, the heating device of the oil bath tank is turned off. After the silicone oil is cooled to room temperature, the DC power supply switch is turned off, the polarization platform is taken out, and the polarization of the spiral electrode piezoelectric actuator is completed.

[0026] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A polarization platform device for a spiral electrode piezoelectric actuator, Characterized in that, It includes a bottom plate, a top plate, a first column, a second column, a third column, a fourth column, a first limiting component and a second limiting component. The first limiting component is arranged on the upper surface of the bottom plate, and the second limiting component is arranged on the lower surface of the top plate. The first limiting component and the second limiting component have the same structure and are coaxially installed. Both the first limiting component and the second limiting component include a first wiring terminal, a second wiring terminal, a first T-shaped slideway, a second T-shaped slideway, a third T-shaped slideway, a fourth T-shaped slideway, a first radial return spring, a second radial return spring, a third radial return spring, a fourth radial return spring, a first radial retaining nut, a second radial retaining nut, a third radial retaining nut, a fourth radial retaining nut, a first radial positioning block, a second radial positioning block, a third radial positioning block, a fourth radial positioning block, a special-shaped electrode mold, and a cross positioning shaft. The first T-shaped slideway and the second T-shaped slideway are a group and are arranged in parallel. The third T-shaped slideway and the fourth T-shaped slideway are a group and are arranged in parallel. The two groups of T-shaped slideways are perpendicularly opened on the bottom plate. The lower T-shaped positioning feet of the first radial positioning block and the third radial positioning block are respectively slidably connected to the third T-shaped slideway and the fourth T-shaped slideway. The lower T-shaped positioning feet of the second radial positioning block and the fourth radial positioning block are respectively slidably connected to the first T-shaped slideway and the second T-shaped slideway. The cross positioning shaft is fixedly installed at the geometric center of the bottom plate. The first positioning shaft of the cross positioning shaft respectively passes through the middle positioning through holes of the first radial positioning block, the first radial return spring and is bolted to the first radial retaining nut. The second positioning shaft of the cross positioning shaft respectively passes through the middle positioning through holes of the second radial positioning block, the second radial return spring and is bolted to the second radial retaining nut. The third positioning shaft of the cross positioning shaft respectively passes through the middle positioning through holes of the third radial positioning block, the third radial return spring and is bolted to the third radial retaining nut. The fourth positioning shaft of the cross positioning shaft respectively passes through the middle positioning through holes of the fourth radial positioning block, the fourth radial return spring and is bolted to the fourth radial retaining nut. The upper parts of the first radial positioning block, the second radial positioning block, the third radial positioning block and the fourth radial positioning block clamp the special-shaped electrode mold. The first wiring terminal and the second wiring terminal are fixedly connected to the bottom plate. The first column, the second column, the third column and the fourth column pass through the top plate and are fixedly connected to the bottom plate; Arc grooves are opened at the upper ends of the first radial positioning block, the second radial positioning block, the third radial positioning block and the fourth radial positioning block; first through holes, second through holes, third through holes and fourth through holes are respectively opened at the four corners of the top plate.

2. The polarization platform device for a spiral electrode piezoelectric actuator according to claim 1, Characterized in that, First threaded through holes, second threaded through holes, third threaded through holes and fourth threaded through holes are arranged on the sides of the first through hole, the second through hole, the third through hole and the fourth through hole.

3. The polarization platform device for a spiral electrode piezoelectric actuator according to claim 2, Characterized in that, The first threaded through-hole, the second threaded through-hole, the third threaded through-hole, and the fourth threaded through-hole are installed with the first locking nut, the second locking nut, the third locking nut, and the fourth locking nut.

4. A polarization platform device for a spiral electrode piezoelectric actuator according to claim 1, wherein, A metal wire is welded to the first terminal. One end of the metal wire is electrically connected to the positive electrode of the DC power supply, and the other end of the metal wire is electrically connected to the metal electrode laid in the positive electrode groove of the special-shaped electrode mold.

5. A polarization platform device for a spiral electrode piezoelectric actuator according to claim 1, wherein, A metal wire is welded to the second terminal. One end of the metal wire is electrically connected to the negative electrode of the DC power supply, and the other end of the metal wire is electrically connected to the metal electrode laid in the negative electrode groove of the special-shaped electrode mold.

6. A polarization platform device for a spiral electrode piezoelectric actuator according to claim 1, wherein, The bottom plate, the top plate, the first column, the second column, the third column, the fourth column, the first limiting component, the second limiting component, the first locking nut, the second locking nut, the third locking nut, and the fourth locking nut are all made of polytetrafluoroethylene.

7. A polarization platform device for a spiral electrode piezoelectric actuator according to claim 1, wherein, The first terminal, the second terminal, and the metal electrodes laid in the positive electrode groove and the negative electrode groove are made of conductive silver.

8. A polarization platform device for a spiral electrode piezoelectric actuator according to claim 1, wherein, The positive and negative electrode grooves on the special-shaped electrode mold are preset according to the different electrode structure forms of the spiral electrode piezoelectric actuator.

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