An assembly tool for a band stent ring ceramic transducer

Abstract

The application relates to the technical field of transducer assembly, in particular to an assembly tool for a circular ring ceramic transducer with a support, which comprises a base and a positioning assembly; the base comprises a bottom plate, a reference plate and two clamping plates; a positioning groove is formed in the bottom plate; the reference plate is located on one side of the positioning groove, and the main plane of the reference plate is perpendicular to the length direction of the positioning groove; the two clamping plates are symmetrically distributed on the two sides of the width direction of the positioning groove; the reference plate and the two clamping plates form a positioning space; the positioning assembly is arranged in correspondence with the positioning space and comprises an adjusting pressing plate and a strip-shaped elastic compression block; the elastic compression block is vertically arranged on the base through the adjusting pressing plate, and the inner side end part of the elastic compression block extends into the positioning space; the length direction of the elastic compression block is parallel to the main plane of the reference plate; the concentricity of the circular ring ceramic can be ensured through the application, the circular ring ceramic is prevented from rotating during pre-tightening, and the assembly yield is improved.

Description

Technical Field

[0001] This invention relates to the field of transducer assembly technology, specifically to an assembly tooling for a ring-shaped ceramic transducer with a support. Background Technology

[0002] Piezoelectric ceramic transducers are widely used in underwater acoustics, ultrasonics, and non-destructive testing, among which the ring-shaped ceramic transducer with a support is a common structure. For example... Figure 4 and Figure 5 As shown, the supported annular ceramic transducer 5 consists of a support 51, multiple annular ceramics 52, multiple insulating washers 53, and wires. The support 51 consists of a support rod 512 and a lower cantilever 511 and an upper cantilever 513 fixed at both ends of the support rod 512. The lower cantilever 511 and the upper cantilever 513 are usually the same size. During assembly, the lower cantilever 511 is pre-fixed, and the annular ceramics 52 and insulating washers 53 are alternately fitted onto the support rod 512. Then, the upper cantilever 513 is fixed to the other end of the support rod 512 by fastening bolts 514. Due to installation requirements, the support rod 512, the annular ceramics 52, and the insulating washers 53 are all clearance fit, and the annular ceramics and insulating washers are not concentric after fitting. When the upper cantilever 513 is fixed and a preload is applied, it is necessary to ensure that the annular ceramics and insulating washers do not rotate relative to each other; otherwise, the annular ceramics will generate torsional internal stress, affecting the electroacoustic performance and even causing the ceramics to crack.

[0003] In existing technologies, the concentricity of the ceramic ring and the insulating washer is usually achieved through their inherent concave-convex positioning structures. However, due to manufacturing errors in the structural components, a high degree of concentricity cannot be guaranteed. More importantly, there are often a large number of ceramic rings, such as multiple rings arranged in a row. The cumulative length of these rings leads to a gradual accumulation and amplification of concentricity errors, severely affecting the assembly accuracy and performance of the transducer. Furthermore, existing technologies use screws to provide preload. When the screws rotate, friction between the screw and the support causes the support to rotate by a certain angle, resulting in torsion of the ceramic rings near the support during tightening, generating internal torsional torque. This torsion not only affects the electroacoustic performance of the transducer but can also cause the ceramic rings to break in severe cases, rendering the product unusable. Additionally, during assembly, the lower cantilever 511 and the upper cantilever 513 must remain in the same plane, meaning their axes must be parallel. Otherwise, the lower cantilever 511 and the upper cantilever 513 will warp, preventing the transducer from being installed on the work platform. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an assembly fixture for a ring-shaped ceramic transducer with a support, which can effectively ensure the concentricity of the ring-shaped ceramic, prevent the ring-shaped ceramic from rotating during pre-tightening, and ensure that the lower cantilever and the upper cantilever are parallel, thereby improving the assembly yield.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an assembly fixture for a ring-shaped ceramic transducer with a support, comprising a base and a positioning assembly; the base includes a bottom plate, a reference plate disposed on the bottom plate, and two clamping plates; a positioning groove extending along the length direction of the bottom plate is formed on the bottom plate; the reference plate is located on one side of the positioning groove, and the main plane of the reference plate is perpendicular to the length direction of the positioning groove; the two clamping plates are located on the side of the reference plate facing the positioning groove and are symmetrically distributed on both sides of the width direction of the positioning groove; a positioning space is formed between the reference plate and the two clamping plates; the positioning assembly is disposed on the base and correspondingly arranged with respect to the positioning space, including an adjusting pressure plate and a strip-shaped elastic clamping block; the elastic clamping block is vertically disposed on the base through the adjusting pressure plate, and the inner end portion of the elastic clamping block extends into the positioning space, and the length direction of the elastic clamping block is parallel to the main plane of the reference plate.

[0006] Preferably, the device further includes a support member, which comprises two fixed blocks, a rotating shaft, and a knob; the two fixed blocks are respectively fixed to the upper and lower ends of the inner side of the adjusting pressure plate; the two ends of the rotating shaft are respectively rotatably mounted on the two fixed blocks; the elastic pressing block is fixedly sleeved on the rotating shaft and located between the two fixed blocks; the knob is fixedly sleeved on the top end of the rotating shaft; the radial cross-section of the elastic pressing block is elliptical.

[0007] Preferably, the ratio of the major axis to the minor axis of the elliptical cross-section of the elastic clamping block is 1.2:1 to 1.6:1.

[0008] Preferably, there are two positioning components, which are respectively located on both sides of the positioning space in the width direction of the base plate; both adjusting pressure plates are slidably connected to the base plate via slide rails; a lead screw is provided between the two adjusting pressure plates, and the two ends of the lead screw are provided with threads of opposite directions and are threadedly connected to the two adjusting pressure plates respectively.

[0009] Preferably, the two clamping plates are slidably disposed on both sides of the positioning groove in the width direction, and are respectively fixedly connected to the two adjusting pressure plates.

[0010] Preferably, the reference plate and the base plate are slidably connected, and the sliding direction is the same as the opening direction of the positioning groove.

[0011] Preferably, a wiring groove is provided at the lower end of the base plate, and the wiring groove is connected to the positioning groove.

[0012] Preferably, the elastic clamping block is made of silicone or rubber.

[0013] Preferably, the inner end of the elastic clamping block has an arc-shaped groove along its length.

[0014] Preferably, the base plate has a dovetail groove extending along the length of the positioning groove, and the lower end of the reference plate has a wedge block that slides and adapts to the dovetail groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention, through the cooperation of the reference plate and the elastic clamping block, limits the circular ceramic rings in both the direction perpendicular to the main plane of the reference plate and the direction parallel to the main plane of the reference plate, so that multiple circular ceramic rings are automatically centered, significantly improving concentricity and avoiding the amplification of length accumulation error; 2. The elastic clamping block is elastic and can adapt to the slight differences in the outer diameter of the circular ceramic ring, forming a surface contact, increasing frictional resistance, and preventing the circular ceramic ring from rotating relative to each other when the pre-tightening force is applied, thereby avoiding ceramic breakage and improving the yield. 3. The two clamps simultaneously hold the lower and upper cantilever arms, ensuring that they are parallel in length direction, preventing the lower and upper cantilever arms from warping against each other, and ensuring that the transducer can be smoothly installed on the work platform. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is an exploded view of the assembly tooling structure of the present invention; Figure 3 This is a schematic diagram of the base structure of the present invention; Figure 4 This is a schematic diagram of the structure of the ring-shaped ceramic transducer with support of the present invention; Figure 5 This is a schematic diagram of the support rod and lower cantilever structure of the present invention; Figure 6 This is a schematic diagram of the structure of Embodiment 4 of the present invention.

[0017] In the diagram: 1 base, 11 bottom plate, 12 reference plate, 13 clamping plate, 111 positioning groove, 112 wiring groove; 2 elastic clamping blocks, 21 arc-shaped grooves; 3 Adjusting pressure plate; 4 Positioning bolt; 5 Circular ceramic transducer; 51 Bracket; 52 Circular ceramic; 53 Insulating washer; 511 Lower cantilever; 512 Support rod; 513 Upper cantilever; 514 Fastening bolt. 6 Support components, 61 Fixing block, 62 Rotating shaft, 63 Knob. Detailed Implementation

[0018] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice the present invention. Although the present invention has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of the invention. Example

[0019] See Figures 1 to 3 The present invention provides an assembly tooling for a ring-shaped ceramic transducer with a support, comprising a base 1 and a positioning component.

[0020] The base 1 is mainly used for the initial positioning of the annular ceramic transducer 5, and includes a base plate 11, a reference plate 12 vertically mounted on the base plate 11, and two clamping plates 13. The base plate 11 is flat and can be made of steel, aluminum alloy, or other metal materials with sufficient strength and rigidity. A positioning groove 111 is provided on the left side of the upper end face of the base plate 11, extending along the length of the base plate 11 to accommodate the lower cantilever 511 and define its position. The reference plate 12 is located on the right side of the positioning groove 111, and the main plane of the reference plate 12 is perpendicular to the length of the positioning groove 111. The reference plate 12 is a vertically mounted flat plate, and its height is greater than the distance between the lower cantilever 511 and the upper cantilever 513 to ensure that it can contact all the annular ceramics 52 on the support rod. The two clamping plates 13 are located on the left side of the reference plate 12 and are symmetrically distributed on both sides of the width direction of the positioning groove 111. The distance between the two clamping plates 13 is adapted to the diameter of the lower cantilever 511, and is used to clamp the lower cantilever 511 and the upper cantilever 513 simultaneously, so that their length directions are parallel. On the base plate 11, the reference plate 12 and the two clamping plates 13 form a positioning space to accommodate a plurality of circular ceramic rings 52 and insulating washers 53 that are sequentially sleeved on the support rod 512.

[0021] The positioning components are located on at least one side of the positioning space in the width direction of the base plate 11. In this embodiment, a set of positioning components is provided, located on the front or rear side of the positioning space. The positioning components include a strip-shaped elastic clamping block 2, an adjusting pressure plate 3, and several positioning bolts 4. The adjusting pressure plate 3 is vertically arranged and installed on the base 1 by the positioning bolts 4. The length of the elastic clamping block 2 is greater than the distance between the lower cantilever 511 and the upper cantilever 513. The elastic clamping block 2 is vertically arranged and its length direction is parallel to the main plane of the reference plate 12.

[0022] Specifically, the positioning bolt 4 passes through the through hole on the adjusting pressure plate 3 and engages with the threaded hole on the base plate 11. By rotating the positioning bolt 4, the position of the adjusting pressure plate 3 in the width direction of the base plate 11 can be adjusted. The elastic clamping block 2 is fixedly disposed on the inner side of the adjusting pressure plate 3 and partially extends into the inner side of the positioning space. The inner end of the elastic clamping block 2 can simultaneously contact the outer periphery of multiple circular ceramic rings 52, forming a V-shaped or right-angled positioning fit with the reference plate 12 for the circular ceramic rings 52. The V-shaped or right-angled positioning fit mentioned here means that the reference plate 12 provides a constraint perpendicular to its main plane, and the elastic clamping block 2 provides a constraint parallel to the main plane of the reference plate 12 and partially perpendicular to it. The two work together to reliably position the circular ceramic rings 52 in the horizontal plane, like a V-shaped block or right-angled positioning structure. During assembly, the lower cantilever 511 is first placed in the positioning groove 111. The positioning groove 111 simultaneously constrains the lower cantilever 511 and the support rod. Multiple circular ceramic rings 52 and insulating washers 53 are then alternately fitted onto the support rod 512. Since the support rod 512, the circular ceramic rings 52, and the insulating washers 53 are all clearance fit, the circular ceramic rings and insulating washers are not concentric at this stage. Then, the entire bracket 51 is pushed along the positioning groove 111 towards the reference plate 12 until the outer circumferential surfaces of all the circular ceramic rings 52 are tangent to the main plane of the reference plate 12, completing the initial positioning. At this point, the vertically positioned reference plate 12 constrains the circular ceramic rings in the direction perpendicular to the main plane of the reference plate 12, but in the direction parallel to the main plane of the reference plate 12, the circular ceramic rings can still roll or slide relative to each other within the clearance fit range.

[0023] Next, the adjusting pressure plate 3 is fixedly installed on the base 1, and the positioning bolt 4 is adjusted so that the adjusting pressure plate 3 drives the elastic clamping block 2 to move inward into the positioning space, and the inner end of the elastic clamping block 2 presses against the annular ceramic 52. Because the elastic clamping block 2 is elastic, it can adapt to the slight differences in the outer diameter of the annular ceramic, forming surface contact and providing high frictional resistance. The elastic clamping block 2 and the reference plate 12 work together to reliably position the multiple annular ceramics 52 in the horizontal plane, ensuring concentricity. The material of the elastic clamping block 2 can be elastic materials such as silicone or rubber; in this embodiment, silicone is preferred. Silicone pads not only have a high coefficient of friction but are also pressure-resistant and aging-resistant, making them suitable for assembly tooling.

[0024] After positioning the annular ceramic 52, the upper cantilever 513 is fitted onto the top of the support rod 512. At this time, the upper cantilever 513 is also clamped between the two clamping plates 13. The distance between the two clamping plates 13 is adapted to the diameter of the lower cantilever 511 and the upper cantilever 513, which can clamp the lower cantilever 511 and the upper cantilever 513 at the same time, ensuring that the length directions of the two are parallel, avoiding the lower cantilever 511 and the upper cantilever 513 from warping each other, and ensuring that the transducer can be smoothly installed on the working platform later.

[0025] Finally, tighten the fastening bolt 514 with a wrench to fix the upper cantilever 513 to the other end of the support rod 512 and apply preload. During the rotation of the fastening bolt 514, due to the large frictional resistance between the elastic clamping block 2 and the annular ceramic 52, the annular ceramic 52 and the insulating washer 53 will not rotate relative to each other with the rotation of the fastening bolt 514, thereby avoiding torsional internal stress in the annular ceramic and preventing ceramic breakage. After the preload is applied, loosen the positioning bolt 4, remove the adjusting pressure plate 3 and the elastic clamping block 2, remove the tooling, and take out the assembled annular ceramic transducer 5 with bracket. Furthermore, an arc-shaped groove 21 can also be formed on the inner end of the elastic clamping block 2 along its length direction, such as... Figure 2 As shown, the radius of curvature of the arc groove 21 is adapted to the outer diameter of the annular ceramic 52, so that the elastic clamping block 2 can wrap around a part of the outer circle of the annular ceramic 52, increasing the contact area and further improving the clamping reliability and anti-rotation capability.

[0026] To facilitate operation, a handle can be provided at the end of the positioning bolt 4 furthest from the base 1, allowing the operator to rotate the positioning bolt 4 without using a wrench, thus improving the convenience and efficiency of tooling use. The number of positioning bolts 4 can be determined according to the length of the adjusting plate 3, usually two or three, to ensure that the adjusting plate 3 is subjected to uniform force. Example

[0027] In this embodiment, two positioning components are provided, which are respectively located on the front and rear sides of the positioning space in the width direction of the base plate 11. The adjusting pressure plates 3 of both positioning components are slidably connected to the base plate 11 via slide rails, and a lead screw is provided between the two adjusting pressure plates 3. When the lead screw is rotated, the two adjusting pressure plates 3 can be easily driven to move closer or further apart, realizing quick closing or opening and improving assembly efficiency.

[0028] Furthermore, the two clamping plates 13 can also be slidably disposed on both sides of the positioning groove 111 in the width direction, and the two clamping plates 13 are respectively fixedly connected to the two adjusting pressure plates 3. In this way, when the rotating screw drives the two adjusting pressure plates 3 to move closer or further away from each other, the two clamping plates 13 also move closer or further away from each other synchronously. When the two adjusting pressure plates 3 drive the elastic clamping block 2 to press the annular ceramic 52, the two clamping plates 13 also simultaneously clamp the lower cantilever 511 and the upper cantilever 513. The positioning of the annular ceramic and the clamping of the cantilever can be completed simultaneously in one operation, further improving assembly efficiency and positioning consistency.

[0029] In this embodiment, the lead screw can be a reverse-threaded lead screw, meaning that the two ends of the lead screw have threads with opposite directions of rotation, which respectively cooperate with the nuts at the lower ends of the two adjusting pressure plates 3. When the lead screw is rotated, the two adjusting pressure plates 3 move synchronously towards or away from each other. A handwheel or handle can be provided at one end of the lead screw for convenient operation. The slide rail can be a dovetail slide rail, linear guide rail, or optical axis slide rail, etc., as long as it can ensure that the adjusting pressure plate 3 moves smoothly and is accurately positioned. Example

[0030] In this embodiment, the reference plate 12 and the base plate 11 are slidably connected. Specifically, the base plate 11 has a dovetail groove aligned with the length of the positioning groove 111, and the lower end of the reference plate 12 has a wedge block that slides with the dovetail groove. Under external force, the reference plate 12 can move closer to or further away from the right end of the positioning groove 111 along its length, thereby adjusting the distance between the reference plate 12 and the right end of the positioning groove 111. The advantage of this design is that it can accommodate annular ceramics 52 with different outer diameters. When the outer diameter of the annular ceramic 52 is large, the reference plate 12 can be moved away from the positioning groove 111 to increase the positioning space; when the outer diameter of the annular ceramic 52 is small, the reference plate 12 can be moved closer to the positioning groove 111 to decrease the positioning space. It should be noted that the dovetail groove and the wedge block are only one implementation of the sliding connection between the reference plate 12 and the base plate 11. Other sliding connection forms such as T-grooves, rectangular grooves, or linear guides can also be used, all of which fall within the scope of protection of this invention.

[0031] Additionally, a wiring groove 112 may be provided at the lower end of the base plate 11, which is connected to the positioning groove 111. When the annular transducer is inserted, the wire can be led out from the wiring groove 112 to prevent damage to the wire. The wiring groove 112 can extend along the length or width of the positioning groove 111, depending on the direction in which the wire is led out. The cross-sectional shape of the wiring groove 112 can be rectangular or semi-circular, and its width and depth should be greater than the diameter of the wire to ensure that the wire can pass through freely. Example

[0032] like Figure 6 As shown, in this embodiment, the assembly fixture further includes a support member 6. The support member 6 includes two fixing blocks 61 fixedly disposed inside the adjusting pressure plate 3, a rotating shaft 62 rotatably disposed between the two fixing blocks 61, and a knob 63 sleeved on the top end of the rotating shaft 62. The two fixing blocks 61 are respectively fixedly disposed at the upper and lower ends of the inner surface of the adjusting pressure plate 3, and each fixing block 61 has a coaxial mounting hole for mounting the rotating shaft 62. The two ends of the rotating shaft 62 are rotatably mounted in the mounting holes of the two fixing blocks 61, so that the length direction of the rotating shaft 62 is consistent with the length direction of the support rod 512.

[0033] The knob 63 is fixedly sleeved on the top of the rotating shaft 62. The outer peripheral surface of the knob 63 is preferably provided with anti-slip knurling or raised ridges to facilitate the operator's grip and application of rotational torque. The operator only needs to hold the knob 63 and rotate it to drive the rotating shaft 62 to rotate around its own axis.

[0034] The elastic clamping block 2 is fixedly sleeved on the rotating shaft 62 and located between the two fixed blocks 61. The elastic clamping block 2 and the rotating shaft 62 can be circumferentially fixed using methods such as key connection, pin connection, bonding, or interference fit, ensuring that the elastic clamping block 2 rotates synchronously with the rotating shaft 62. The radial cross-section of the elastic clamping block 2 is elliptical. The ellipse has a major axis and a minor axis, with the radial dimension along the major axis being larger than the radial dimension along the minor axis.

[0035] The adjusting pressure plate 3 is detachably fixed to the base 1 by the positioning bolts 4. After installation, the elastic clamping block 2 is located in the positioning space formed between the reference plate 12 and the two clamping plates 13.

[0036] When it is necessary to constrain the annular ceramic 52, the operator only needs to rotate the knob 63 located at the top of the rotating shaft 62 to drive the rotating shaft 62 to rotate, thereby causing the elastic clamping block 2 to rotate around the axis of the rotating shaft 62. Since the cross-section of the elastic clamping block 2 is elliptical, during the rotation, the distance between the outer circumference of the elastic clamping block 2 and the outer circumference of the annular ceramic 52 will continuously change with the change of the rotation angle. When the long axis direction of the elastic clamping block 2 gradually turns to one side of the annular ceramic 52, the outer circumference of the elastic clamping block 2 gradually approaches the annular ceramic 52 and eventually contacts it; with continued rotation, the end of the long axis further squeezes the annular ceramic 52, causing the elastic clamping block 2 to produce elastic deformation, applying a gradually increasing clamping force to the annular ceramic 52 until the annular ceramic 52 is clamped and positioned.

[0037] When it is necessary to release the constraint, simply rotate the knob 63 in the opposite direction to turn the short axis of the elastic clamping block 2 toward the side of the annular ceramic 52. The outer periphery of the elastic clamping block 2 will then disengage from the annular ceramic 52, thus releasing the clamping constraint.

[0038] Due to its elliptical geometry, the elastic clamping block 2 can continuously adjust the clamping force on the annular ceramic 52 during rotation—from completely loose to slight contact, and then to gradual tightening. Operators can apply appropriate clamping force based on feel or visual judgment to avoid damaging the ceramic due to excessive clamping force.

[0039] The advantages of this embodiment are that it is easy to operate and the clamping force is continuously adjustable.

[0040] Unlike the method in Embodiment 1, which requires repeated tightening and loosening of the positioning bolt 4, this embodiment only requires rotating the knob 63 to tighten and release the elastic clamping block 2. This can be done with one hand, without the need for any tools, significantly reducing operational intensity and improving assembly efficiency. The elliptical structure allows the clamping force of the elastic clamping block 2 on the annular ceramic 52 to continuously change with the rotation angle. Operators can flexibly control the degree of clamping according to actual conditions such as the material, quantity, and outer diameter tolerance of the annular ceramic 52, ensuring reliable concentric positioning while avoiding damage to the ceramic due to rigid overpressure.

[0041] Furthermore, the ratio of the major axis to the minor axis of the elliptical cross-section of the elastic clamping block 2 is between 1.2:1 and 1.6:1. The difference between the major and minor axes determines the radial displacement of the elastic clamping block 2 during rotation, i.e., the clamping stroke. If the ratio is too small, the clamping stroke is insufficient, and reliable clamping cannot be achieved; if the ratio is too large, the elastic clamping block 2 may interfere with adjacent structures during rotation, and the clamping force changes too rapidly, which is not conducive to precise control. When the ratio of the major axis to the minor axis is within the above range, it can provide sufficient clamping stroke and achieve smooth adjustment of the clamping force. In summary, the assembly fixture of this invention, through the cooperation of the reference plate 12 and the elastic clamping block 2, forms a circumferential constraint on the annular ceramic 52, enabling it to automatically center in the horizontal plane. The elastic characteristics of the elastic clamping block 2 can compensate for manufacturing errors in the outer diameter of the annular ceramic and provide sufficient frictional resistance to prevent relative rotation of the annular ceramic when preload is applied. The two clamping plates 13 simultaneously hold the lower cantilever 511 and the upper cantilever 513, ensuring that their length directions are parallel, thereby guaranteeing the installation accuracy of the transducer. The entire fixture has a simple structure and is easy to operate, especially suitable for situations where multiple annular ceramics are arranged side by side, effectively solving the problems of concentricity error accumulation and preload torsion.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An assembly fixture for a ring-shaped ceramic transducer with a support, characterized in that: The system includes a base and a positioning assembly. The base includes a bottom plate, a reference plate disposed on the bottom plate, and two clamping plates. A positioning groove extending along the length of the bottom plate is formed on the bottom plate. The reference plate is located on one side of the positioning groove, and the main plane of the reference plate is perpendicular to the length of the positioning groove. The two clamping plates are located on the side of the reference plate facing the positioning groove and are symmetrically distributed on both sides of the width of the positioning groove. A positioning space is formed between the reference plate and the two clamping plates. The positioning assembly is disposed on the base and corresponding to the positioning space, and includes an adjusting pressure plate and a strip-shaped elastic pressing block. The elastic pressing block is vertically disposed on the base through the adjusting pressure plate, and the inner end of the elastic pressing block extends into the positioning space. The length of the elastic pressing block is parallel to the main plane of the reference plate.

2. The assembly fixture for a ring-shaped ceramic transducer with a support according to claim 1, characterized in that: It also includes a support component, which comprises two fixed blocks, a rotating shaft, and a knob; the two fixed blocks are respectively fixed to the upper and lower ends of the inner side of the adjusting pressure plate; the two ends of the rotating shaft are respectively rotatably mounted on the two fixed blocks; the elastic pressing block is fixedly sleeved on the rotating shaft and located between the two fixed blocks; the knob is fixedly sleeved on the top end of the rotating shaft; the radial cross-section of the elastic pressing block is elliptical.

3. The assembly fixture for a ring-shaped ceramic transducer with a support according to claim 2, characterized in that: The ratio of the major axis to the minor axis of the elliptical cross-section of the elastic clamping block is 1.2:1 to 1.6:

1.

4. The assembly fixture for a ring-shaped ceramic transducer with a support according to claim 1, characterized in that: The number of positioning components is two, and the two positioning components are respectively located on both sides of the positioning space in the width direction of the base plate; the two adjusting pressure plates are slidably connected to the base plate through slide rails; a lead screw is provided between the two adjusting pressure plates, and the two ends of the lead screw are provided with threads of opposite directions, and are respectively threaded to the two adjusting pressure plates.

5. An assembly fixture for a ring-shaped ceramic transducer with a support according to claim 4, characterized in that: The two clamping plates are slidably disposed on both sides of the positioning groove in the width direction, and are respectively fixedly connected to the two adjusting pressure plates.

6. The assembly fixture for a ring-shaped ceramic transducer with a support according to claim 1, characterized in that: The reference plate and the base plate are slidably connected, and the sliding direction is the same as the opening direction of the positioning groove.

7. The assembly fixture for a ring-shaped ceramic transducer with a support according to claim 1, characterized in that: The bottom end of the base plate is provided with a wiring groove, which is connected to the positioning groove.

8. The assembly fixture for a ring-shaped ceramic transducer with a support according to claim 1, characterized in that: The elastic clamping block is made of silicone or rubber.

9. The assembly fixture for a ring-shaped ceramic transducer with a support according to claim 1, characterized in that: The inner end of the elastic clamping block has an arc-shaped groove along its length.

10. An assembly fixture for a ring-shaped ceramic transducer with a support according to claim 6, characterized in that: The base plate has a dovetail groove extending along the length of the positioning groove, and the lower end of the reference plate has a wedge block that slides and adapts to the dovetail groove.

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