CN117182842A - Ultrasonic transducer assembly tool and assembly method - Google Patents
Ultrasonic transducer assembly tool and assembly method Download PDFInfo
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- CN117182842A CN117182842A CN202311344492.1A CN202311344492A CN117182842A CN 117182842 A CN117182842 A CN 117182842A CN 202311344492 A CN202311344492 A CN 202311344492A CN 117182842 A CN117182842 A CN 117182842A
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- cover plate
- ultrasonic transducer
- front cover
- assembly
- cavity
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 21
- 230000006835 compression Effects 0.000 claims abstract description 21
- 238000007906 compression Methods 0.000 claims abstract description 21
- 230000003746 surface roughness Effects 0.000 claims description 4
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The application discloses an ultrasonic transducer assembly fixture and an assembly method, wherein the assembly fixture comprises an assembly body with a cylindrical cavity and a front cover plate flange connected with the assembly body, and the assembly body comprises a first end face and a second end face; the first end face is provided with a step matched with a front cover plate of the ultrasonic transducer, and a compression ring is arranged between the front cover plate and a front cover plate flange of the ultrasonic transducer; four through grooves which are uniformly distributed and parallel to the axis of the cavity are formed in the inner wall of the cavity, the depth of each through groove is matched with the length of the electrode slice pin of the ultrasonic transducer, and the through grooves are uniformly distributed along the circumference of the cavity; the middle part of front shroud ring flange has the screw hole that runs through, and threaded connection has the cavity screw for the clamping ring compresses tightly through the cavity screw. The assembly device and the assembly method can ensure the coaxiality among the front cover plate, the rear cover plate and the piezoelectric ceramics when the ultrasonic transducer is assembled, thereby improving the assembly quality.
Description
Technical Field
The application relates to an ultrasonic transducer assembly technology, in particular to an ultrasonic transducer assembly tool and an ultrasonic transducer assembly method.
Background
Ultrasonic transducers are devices for converting electric energy into ultrasonic mechanical vibration energy, and can be classified into magnetostrictive type and electrostrictive type based on the vibrator type, wherein the electrostrictive vibrator element is piezoelectric ceramics, and in practical engineering application, sandwich type piezoelectric ultrasonic transducers are one of the most widely used configurations. In this configuration, the main components include a front cover plate, piezoelectric ceramic, electrode pads, a rear cover plate, and pre-tightening screws by which the front and rear cover plates clamp the piezoelectric ceramic and electrode pads. The piezoelectric ceramic vibrates under the state of being pressed, and vibration energy is transmitted to the execution part through the end face of the front cover plate.
The assembly process of the sandwich piezoelectric ultrasonic transducer is extremely important, the quality of assembly directly influences various performances of the transducer, such as resonant frequency, static capacitance, impedance and the like, the parameters can directly influence the output performance and working stability of the transducer, and even the piezoelectric ceramic plate is broken due to the poor assembly quality. The coaxiality among the front cover plate, the rear cover plate and the piezoelectric ceramic is a decisive factor for influencing the assembly quality, and the traditional transducer assembly device and the assembly method have complex structures, involve more parts and complex assembly methods, so that the coaxiality among the front cover plate, the rear cover plate and the piezoelectric ceramic cannot be accurately ensured.
Disclosure of Invention
In order to solve the defects in the prior art, the application aims to provide an ultrasonic transducer assembly tool and an assembly method, which can ensure the coaxiality among a front cover plate, a rear cover plate and piezoelectric ceramics during assembly of an ultrasonic transducer, thereby improving the assembly quality.
The technical scheme adopted for solving the technical problems is as follows: the ultrasonic transducer assembly fixture comprises an assembly body with a cylindrical cavity and a front cover plate flange connected with the assembly body, wherein the cavity is distributed along the axis of the assembly body and penetrates through the assembly body, and the assembly body comprises a first end face and a second end face;
the first end face is provided with a step matched with the front cover plate of the ultrasonic transducer, so that the front cover plate of the ultrasonic transducer is just clamped in the step;
a compression ring is arranged between the front cover plate and the front cover plate flange plate of the ultrasonic transducer;
four through grooves which are uniformly distributed and parallel to the axis of the cavity are formed in the inner wall of the cavity, the depth of each through groove is matched with the length of an electrode plate pin of the ultrasonic transducer, and the through grooves are uniformly distributed along the circumference of the cavity;
the middle part of front shroud ring flange has the screw hole that runs through, and threaded hole threaded connection has the cavity screw, makes the clamping ring compresses tightly through the cavity screw.
Optionally, a plurality of protrusions are arranged in the step, a groove matched with the protrusions is formed in the end face of the front cover plate flange, and the protrusions are clamped in the groove;
the bulges are uniformly distributed along the circumference of the step, and the bulges and the through grooves are distributed in a staggered manner.
Compared with the prior art, the assembly body has the steps matched with the flange plate of the front cover plate, the front cover plate can be fastened at the first end face during assembly, and then the piezoelectric ceramic and the rear cover plate are fixed at the second end face, so that coaxiality among the front cover plate, the rear cover plate and the piezoelectric ceramic is ensured.
The application also provides an ultrasonic transducer assembly method, which comprises the following steps,
inserting a front cover plate of an ultrasonic transducer from a first end face of the assembly;
sleeving the compression ring in the ultrasonic transducer, sleeving the ultrasonic transducer into the front cover plate flange plate, and enabling the front cover plate flange plate to be just clamped in the step;
the front cover plate flange plate is fixedly connected with the first end face by using screws;
sleeving a hollow screw into the ultrasonic transducer, and screwing the hollow screw into a threaded hole of the flange of the front cover plate;
tightening the hollow screw to enable the hollow screw to compress the compression ring, and enabling the compression ring to compress the front cover plate of the ultrasonic transducer;
the piezoelectric ceramics, the electrode plate and the rear cover plate are sequentially plugged into the cavity from the second end face of the assembly body;
tightening a rear cover plate of the ultrasonic transducer from the second end surface by using a pre-tightening screw;
sequentially removing the hollow screw, the front cover plate flange plate and the compression ring;
the assembled ultrasound transducer is withdrawn from the cavity from the first end of the assembly.
Optionally, a plurality of protrusions are arranged in the step, a groove matched with the protrusions is formed in the end face of the front cover plate flange, and the protrusions are clamped in the groove;
the bulges are uniformly distributed along the circumference of the step, and the bulges and the through grooves are distributed in a staggered manner.
Optionally, the surface roughness of the back cover plate is less than or equal to ra0.4.
By adopting the assembly method, when the ultrasonic transducer is assembled, the front cover plate is fastened at the first end face, and then the piezoelectric ceramic and the rear cover plate are fixed at the second end face, so that the coaxiality among the front cover plate, the rear cover plate and the piezoelectric ceramic is ensured.
Drawings
FIG. 1 is an assembly schematic diagram of an assembly fixture and an ultrasonic transducer of the present application;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic structural view of the assembly fixture of the present application;
FIG. 4 is a right side view of FIG. 3;
fig. 5 is a schematic structural view of an ultrasonic transducer of the present application.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1-5, the application discloses an ultrasonic transducer assembly tool, which can ensure the assembly quality of an ultrasonic transducer and improve the output performance and the working stability of the ultrasonic transducer after the ultrasonic transducer is assembled. Specifically, the assembly fixture includes an assembly body 100 having a cylindrical cavity 110, the cavity 110 is distributed along an axis of the assembly body 100, and the cavity 110 penetrates through the assembly body 100, so that the cavity 110 forms a penetrating hole shape, the overall shape of the assembly body 100 is also cylindrical, and a base 120 is fixedly arranged on a column body of the assembly body 100, so that the assembly body 100 is fixed on a working table.
In the present application, both ends of the assembly 100 are referred to as a first end face 130 and a second end face 140, respectively. The front cover flange 300 is connected to the first end surface through screws, and the first end surface 130 is further provided with a step 150 adapted to the front cover 210 of the ultrasonic transducer 200, so that the front cover 210 of the ultrasonic transducer 200 is just clamped in the step 150, thereby ensuring that the ultrasonic transducer 200 is kept coaxial with the assembly 100 and the cavity 110. In addition, a compression ring 400 is further disposed between the front cover plate 210 and the front cover plate flange 300 of the ultrasonic transducer 200, the compression ring 400 is used for compressing the front cover plate 210 of the ultrasonic transducer 200, and during compressing, the compression ring 400 needs to be compressed by a screw, but because the front end of the ultrasonic transducer 200 is further provided with a lead 260 portion, the compression ring needs to be compressed by a hollow screw 500 having a hollow channel, an external thread is required to be provided on the outer surface of the hollow screw 500, and the middle portion of the front cover plate flange 300 is a threaded hole adapted to the hollow screw 500, so that the hollow screw and the threaded hole are in threaded connection, and when compressing the compression ring 400, the compression ring 400 is compressed by screwing the hollow screw, thereby completing the fastening of the front cover plate 210 of the ultrasonic transducer 200. In one embodiment of the present application, a plurality of protrusions 160 may be disposed at the position of the step 150 near the edge, the protrusions 160 are uniformly distributed along the circumference of the step 150, and grooves 310 adapted to the protrusions 160 are disposed on the end surface of the front cover flange 300, so that the protrusions 160 may be snapped into the grooves 310 when the front cover flange 300 is mounted, so as to facilitate rapid positioning of the front cover flange 300.
In the present application, four through grooves 170 which are uniformly distributed and parallel to the axis of the cavity 110 are provided on the inner wall of the cavity 110, the depth of the through grooves 170 is adapted to the length of the pins of the electrode sheet 220 of the ultrasonic transducer 200, the through grooves 170 are uniformly distributed along the circumference of the cavity 110, and the through grooves 170 extend from the second end surface 140 to the step 150 in the length direction, so that the ultrasonic transducer 200 can be extracted from the cavity 110 after the ultrasonic transducer 200 is assembled. In the present application, the through grooves 170 are staggered with the protrusions 160.
In assembling the ultrasonic transducer 200, the assembly is performed as follows:
s1, inserting the front cover plate 210 of the ultrasonic transducer 200 into the cavity 110 from the first end face 130 of the assembly 100, and enabling the front end of the front cover plate 210 of the ultrasonic transducer 200 to abut against the step 150.
S2, sleeving the compression ring 400 in the front cover plate 210 of the ultrasonic transducer 200, sleeving the front cover plate flange 300 into the ultrasonic transducer 200, and enabling the groove 310 of the front cover plate flange 300 to be exactly clamped in the protrusion 160.
S3, using screws to fixedly connect the front cover flange 300 with the first end face 130.
S4, sleeving the hollow screw 500 into the ultrasonic transducer 200, and screwing the hollow screw 500 into the threaded hole of the front cover plate flange 300.
And S5, screwing the hollow screw 500, so that the hollow screw 500 compresses the compression ring 400, and the compression ring 400 compresses the front cover plate 210 of the ultrasonic transducer 200.
S5, the piezoelectric ceramics 230, the electrode plate 220 and the back cover plate 240 are sequentially inserted into the cavity 110 from the second end face 140 of the assembly 100, and the piezoelectric ceramics 230, the electrode plate 220 and the back cover plate 240 are ensured to be coaxial with the ultrasonic transducer 200.
S6, the back cover plate 240 of the ultrasonic transducer 200 is screwed from the second end face 140 by using the pre-tightening screw 250, so that the piezoelectric ceramics 230, the electrode slice 220 and the back cover plate 240 are fastened.
And S7, sequentially detaching the hollow screw 500, the front cover plate flange 300 and the compression ring 400.
S8, the assembled ultrasonic transducer 200 is pulled out of the cavity 110 from the first end 130 of the assembly 100.
In the present application, in order to ensure that the piezoelectric ceramic 230 does not rotate due to the rotation of the back plate 240 during the application of the pre-tightening force, the back plate end surface roughness is required to be less than or equal to ra0.4, and the end surface roughness of the pre-tightening force screw 250 in contact with the back plate 240 is required to be less than or equal to ra0.4.
By adopting the assembly method, when the ultrasonic transducer is assembled, the front cover plate is fastened at the first end face, and then the piezoelectric ceramic and the rear cover plate are fixed at the second end face, so that the coaxiality among the front cover plate, the rear cover plate and the piezoelectric ceramic is ensured.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Other technical features besides those described in the specification are known to those skilled in the art, and are not described herein in detail to highlight the innovative features of the present application.
Claims (5)
1. The ultrasonic transducer assembly fixture is characterized by comprising an assembly body with a cylindrical cavity and a front cover plate flange plate connected with the assembly body, wherein the cavity is distributed along the axis of the assembly body and penetrates through the assembly body, and the assembly body comprises a first end face and a second end face;
the first end face is provided with a step matched with the front cover plate of the ultrasonic transducer, so that the front cover plate of the ultrasonic transducer is just clamped in the step;
a compression ring is arranged between the front cover plate and the front cover plate flange plate of the ultrasonic transducer;
four through grooves which are uniformly distributed and parallel to the axis of the cavity are formed in the inner wall of the cavity, the depth of each through groove is matched with the length of an electrode plate pin of the ultrasonic transducer, and the through grooves are uniformly distributed along the circumference of the cavity;
the middle part of front shroud ring flange has the screw hole that runs through, and threaded hole threaded connection has the cavity screw, makes the clamping ring compresses tightly through the cavity screw.
2. The ultrasonic transducer assembly fixture according to claim 1, wherein a plurality of protrusions are arranged in the step, grooves matched with the protrusions are formed in the end face of the front cover plate flange, and the protrusions are clamped in the grooves;
the bulges are uniformly distributed along the circumference of the step, and the bulges and the through grooves are distributed in a staggered manner.
3. An ultrasonic transducer assembling method using the ultrasonic transducer assembling tool according to claim 1 or 2, characterized by comprising the steps of,
inserting a front cover plate of an ultrasonic transducer from a first end face of the assembly;
sleeving the compression ring in the ultrasonic transducer, sleeving the ultrasonic transducer into the front cover plate flange plate, and enabling the front cover plate flange plate to be just clamped in the step;
the front cover plate flange plate is fixedly connected with the first end face by using screws;
sleeving a hollow screw into the ultrasonic transducer, and screwing the hollow screw into a threaded hole of the flange of the front cover plate;
tightening the hollow screw to enable the hollow screw to compress the compression ring, and enabling the compression ring to compress the front cover plate of the ultrasonic transducer;
the piezoelectric ceramics, the electrode plate and the rear cover plate are sequentially plugged into the cavity from the second end face of the assembly body;
tightening a rear cover plate of the ultrasonic transducer from the second end surface by using a pre-tightening screw;
sequentially removing the hollow screw, the front cover plate flange plate and the compression ring;
the assembled ultrasound transducer is withdrawn from the cavity from the first end of the assembly.
4. The ultrasonic transducer assembling method according to claim 3, wherein a plurality of protrusions are arranged in the step, grooves matched with the protrusions are formed in the end face of the front cover plate flange, and the protrusions are clamped in the grooves;
the bulges are uniformly distributed along the circumference of the step, and the bulges and the through grooves are distributed in a staggered manner.
5. The ultrasonic transducer assembly method of claim 4, wherein the back plate has a surface roughness less than or equal to ra0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311344492.1A CN117182842A (en) | 2023-10-18 | 2023-10-18 | Ultrasonic transducer assembly tool and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311344492.1A CN117182842A (en) | 2023-10-18 | 2023-10-18 | Ultrasonic transducer assembly tool and assembly method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117182842A true CN117182842A (en) | 2023-12-08 |
Family
ID=88992594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311344492.1A Pending CN117182842A (en) | 2023-10-18 | 2023-10-18 | Ultrasonic transducer assembly tool and assembly method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117182842A (en) |
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2023
- 2023-10-18 CN CN202311344492.1A patent/CN117182842A/en active Pending
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