CN109060966B - An ultrasonic transducer automatic calibration device - Google Patents

Abstract

The invention belongs to the technical field of nondestructive testing, and particularly relates to an automatic calibration device for an ultrasonic transducer, which comprises a support frame, a three-dimensional translation table, a three-dimensional rotation table and a transducer clamping device, wherein the three-dimensional translation table is arranged on the upper part of the support frame, and the three-dimensional rotation table is fixed at the central position in the support frame; the energy converter clamping device is arranged on the three-dimensional translation table; the three-dimensional rotating platform is provided with a test block. The invention realizes the six-degree-of-freedom relative motion between the transducer to be measured and the test block, in particular to a three-dimensional translation table and a three-dimensional rotation table which split the spatial six-dimensional motion of the transducer to be measured relative to the test block into two three-dimensional motions, reduces the coupling times of the platform motion, reduces the measurement error, improves the measurement precision, simultaneously enhances the working stability of the system and solves the problems of low control precision and poor stability of the existing calibrated mechanical device.

Description

Automatic calibrating device for ultrasonic transducer

Technical Field

The invention belongs to the technical field of nondestructive testing, and particularly relates to an automatic calibration device for an ultrasonic transducer.

Background

An ultrasonic transducer, also called an ultrasonic sensor, is an energy device for performing interconversion of acoustic and electrical signals, and is a core component for generating ultrasonic waves by ultrasonic application equipment. By applying electrical pulse signals thereto, the transducer can emit ultrasonic waves, and the ultrasonic transducer operates by means of propagation characteristics of reflection, refraction, and the like of the ultrasonic waves in a medium. In order to ensure the accuracy of the detection result of the ultrasonic detection system and prevent the reduction of the detection indexes such as the sensitivity, the resolution ratio and the like of the ultrasonic detection system caused by the deviation of the actual performance of the ultrasonic transducer from the nominal value, the ultrasonic flaw detector transducer must be strictly measured and calibrated during the service period.

At present, the traditional manual measurement method is generally adopted for calibrating the ultrasonic transducer in the industry, and the detection method needs to use a plurality of professional measuring instruments, requires operators to be familiar with the specific operation of each instrument and manually processes the calculation process, so that the operation is complex, the efficiency is low, the operation is easily influenced by the operators, data calculation errors or improper treatment are easily caused, and the detection and evaluation of the calibration on the transducer are influenced. Thus, the conventional manual method has not been able to satisfy the increasing work task.

Based on the technical scheme, the automatic mechanical calibration device can simulate the operation of a human hand, for example, the automatic calibration device for the ultrasonic transducer with five degrees of freedom can simulate the operation of a human hand, the automatic calibration device adopts a design scheme that all shafts are connected in series, the X shaft and the Y shaft of a gantry structure can control horizontal movement, the Z shaft connected with the Y shaft can control the lifting of a probe, the A shaft connected with the Z shaft is a rotating shaft, and the B shaft connected with the A shaft can control the rotation of the probe. The device has the following defects: 1. because the serial control is adopted, errors are amplified step by step, and the control precision is reduced; 2. the five-dimensional motion control part is centralized at the transducer to be tested, so that the load of the end effector is increased, and the motion stability of the system is reduced; 3. the structure with five degrees of freedom concentrated together can lead the mass borne by the motion shaft far away from the ultrasonic transducer to be the sum of the ultrasonic transducer and a front end member, and the design index of each mechanical member needs to be improved for ensuring the precision, so that the mechanical structure is inevitably large and heavy.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an automatic calibration device for an ultrasonic transducer, which solves the problems of low control precision and poor stability of the existing mechanical calibration device.

In order to achieve the purpose, the invention adopts the following technical scheme:

the automatic calibration device for the ultrasonic transducer comprises a supporting frame, a three-dimensional translation table, a three-dimensional rotation table and a transducer clamping device, wherein the three-dimensional translation table is installed at the upper part of the supporting frame, and the three-dimensional rotation table is fixed at the central position inside the supporting frame; the energy converter clamping device is arranged on the three-dimensional translation table; the three-dimensional rotating platform is provided with a test block.

Further, the three-dimensional translation stage comprises an X-axis translation guide rail, a Y-axis translation guide rail and a Z-axis lifting guide rail; the X-axis translation guide rail comprises an X-axis driving guide rail and an X-axis support guide rail which are parallel to each other; the X-axis servo motor is arranged on the X-axis driving guide rail, the Y-axis translation guide rail is vertically arranged above the X-axis driving guide rail and the X-axis support guide rail, and the X-axis servo motor is connected with the Y-axis translation guide rail through a first lead screw so as to drive the Y-axis translation guide rail to move along the X-axis translation guide rail; the Y-axis servo motor is arranged on the Y-axis guide rail, the Z-axis lifting guide rail is vertically arranged on the screw nut fixing seat of the Y-axis translation guide rail, and the Y-axis servo motor is connected with the Z-axis lifting guide rail through a second screw rod so as to drive the Z-axis lifting guide rail to translate along the Y-axis guide rail; and the X-axis servo motor, the Y-axis servo motor and the Z-axis servo motor are respectively connected with the amplifier control box.

Furthermore, the energy converter clamping device comprises a quick chuck, a transition chuck, a pressure loading assembly and an energy converter clamp, wherein the quick chuck is arranged at the lower part of the Z-axis lifting guide rail, and a Z-axis servo motor is connected with the quick chuck through a lead screw so as to drive the quick chuck to move up and down along the Z-axis lifting guide rail; the transition chuck is connected with the quick chuck through a quick-change connector; the transition chuck is connected with the pressure loading assembly, and the transducer clamp is fixed at the pressure loading assembly and the lower end.

Furthermore, the pressure loading assembly comprises a pressure loading part and a linear guide rail, and the pressure loading part is installed on the transition chuck through the linear guide rail.

Furthermore, a vertical groove is formed in the transition chuck, an L-shaped second base plate is arranged in the vertical groove, the width of the second base plate is smaller than that of the linear guide rail, and the linear guide rail is fixed in the vertical groove through a bolt which is pressed against the side face of the second base plate.

Furthermore, a weight tray is arranged on the pressure loading part.

Furthermore, the three-dimensional rotating platform comprises a yawing rotating platform, a tilting rotating platform, a pitching rotating platform (33), a test block clamping device and a digital level meter, wherein the pitching rotating platform, the tilting rotating platform and the yawing rotating platform are sequentially installed from top to bottom, the swinging planes of the pitching rotating platform and the tilting rotating platform are mutually vertical, and meanwhile, the pitching rotating platform, the tilting rotating platform and the yawing rotating platform are respectively connected with an industrial personal computer; the test block clamping device is fixed on the pitching rotary table and clamps a test block; the digital level meter is installed on the test block clamping device and connected with the industrial personal computer.

Furthermore, the test block clamping device adopts a quick clamping vice, so that the test block can be clamped quickly and stably.

Furthermore, a first base plate matched with the test block in shape is arranged on the inner side of the clamping part of the test block clamping device.

Further, the industrial personal computer is installed on the Z axis.

Compared with the prior art, the method has the following advantages:

1. by respectively controlling the translation of the transducer to be tested and the rotation of the test block, particularly the three-dimensional rotating table works before testing, only the three-dimensional translation table works in the calibration process, the coupling times of platform motion are reduced, the measurement error is reduced, the measurement precision is improved, and meanwhile, the working stability of the system is enhanced.

2. Through the transition chuck can be followed quick dismantlement on the quick chuck, and the transducer can be followed quick dismantlement on the transducer anchor clamps, has simplified just operation of calibration personnel, realizes the quick replacement to different appearance, size transducer, has reduced the complexity of device.

3. The industrial computer is installed on the Z axle, and the signal that can significantly reduce among the prior art appears because the industrial computer is too big apart from the transducer to make the testing result more accurate.

Drawings

FIG. 1 is a schematic structural diagram of an automatic calibration device for an ultrasonic transducer according to the present invention;

FIG. 2 is a schematic diagram of a mechanical part system connection;

FIG. 3 is a schematic view of the transducer holding apparatus coupled to a quick-change chuck;

FIG. 4 is a schematic view of the transducer holder not connected to the quick-change chuck;

FIG. 5 is a schematic diagram of a transducer holder assembly;

FIG. 6 is a schematic view of a transition collet;

FIG. 7 is a schematic view of the mounting of the three-dimensional rotating table and the test block;

fig. 8 is a schematic view of a test block protective backing plate.

The meaning of the various reference numbers in the drawings:

1-a support frame, 2-a three-dimensional translation table, 3-a three-dimensional rotation table, 4-a transducer clamping device, 5-a rotation table support and 6-an industrial personal computer;

21-X axis translation guide rail, 22-Y axis translation guide rail and 23-Z axis lifting guide rail; 31-a yaw turntable, 32-a side-tilting turntable, 33-a pitching turntable and 34-a test block clamping device; 41-fast chuck, 42-transition chuck, 43-pressure loading assembly, 44-transducer clamp;

211-X axis drive rail, 212-X axis support rail; 341-first pad, 342-test block; 421-a second backing plate; 431-pressure loading part, 432-linear guide rail and 433-weight tray.

Detailed Description

The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.

In the present invention, unless otherwise specified, use of the directional terms "upper" and "lower" generally refer to the definition in the drawing figures, in which reference is made to the drawing figures of the accompanying drawings, and "inner" and "outer" refer to the inner and outer of the outline of the corresponding component.

As shown in fig. 1 and fig. 2, the invention discloses an automatic calibration device for an ultrasonic transducer, comprising asupport frame 1, a three-dimensional translation stage 2, a three-dimensional rotation stage 3 and atransducer clamping device 4, wherein the three-dimensional translation stage 2 is installed at the upper part of thesupport frame 1, and the three-dimensional rotation stage 3 is fixed at the central position inside thesupport frame 1; thetransducer clamping device 4 is arranged on the three-dimensional translation table 2; atest block 342 is arranged on the three-dimensional rotating platform 3; the three-dimensional rotating table 3 is used to level the upper surface of thetest block 342.

In the above scheme, the specific working process is as follows: firstly, an ultrasonic transducer to be tested is installed on thetransducer clamping device 4, and a test block 343 is installed on the three-dimensional rotating table 3; and then, the three-dimensional rotating platform 3 is adjusted to be horizontal, namely, the test block 343 is ensured to be parallel to the lower surface of the transducer to be detected, the ultrasonic transducer is driven to move to the upper surface of the test block 343 through the three-dimensional translation platform 2 and to perform translation acquisition on the test block detection surface, at each acquisition point, the system coordinately controls the excitation transducer to transmit ultrasonic waves and acquire ultrasonic echo data, and meanwhile, the three-dimensional translation platform 2 is required to ensure the close coupling and constant vertical pressure between the bottom surface of the transducer and the test block detection surface. In the technical scheme, six-degree-of-freedom relative motion between the transducer to be tested and thetest block 342 is realized, specifically, the three-dimensional translation table 2 and the three-dimensional rotation table 3 divide the spatial six-dimensional motion of the transducer to be tested relative to thetest block 342 into two three-dimensional motions, wherein the three-dimensional translation table 2 controls theultrasonic transducer 4 to be tested to perform X, Y, Z parallel movements in three directions, position control can be realized by taking a three-degree-of-freedom machine tool system as a reference, and the three-dimensional rotation table 3 controls thetest block 342 to rotate and perform two-dimensional angle adjustment motion to realize leveling of the upper surface of thetest block 342. According to the scheme, the translation of the transducer to be tested and the rotation of thetest block 342 are respectively controlled, particularly, the three-dimensional rotating table works before testing, and only the three-dimensional translation table works in the calibration process, so that the coupling frequency of platform movement is reduced, the measurement error is reduced, the measurement precision is improved, and the working stability of the system is enhanced.

Preferably, the three-dimensional translation stage 2 comprises an X-axistranslation guide rail 21, a Y-axistranslation guide rail 22 and a Z-axislifting guide rail 23; wherein, the X-axistranslation guide rail 21 includes an X-axisdriving guide rail 211 and an X-axissupport guide rail 212 which are parallel to each other; an X-axis servo motor is arranged on an X-axisdriving guide rail 211, a Y-axistranslation guide rail 22 is vertically arranged above the X-axisdriving guide rail 211 and the X-axissupport guide rail 212, and the X-axis servo motor is connected with the Y-axistranslation guide rail 22 through a first lead screw so as to drive the Y-axistranslation guide rail 22 to move along the X-axistranslation guide rail 21; a Y-axis servo motor is arranged on a Y-axis guide rail, a Z-axislifting guide rail 23 is vertically arranged on a screw nut fixing seat of a Y-axistranslation guide rail 22, and the Y-axis servo motor is connected with the Z-axis lifting guide rail through a second screw rod so as to drive the Z-axislifting guide rail 23 to translate along the Y-axis guide rail; the screw rod is high in transmission efficiency and small in friction resistance, so that the measurement precision is improved; the X-axis servo motor, the Y-axis servo motor and the Z-axis servo motor are respectively connected with the industrialpersonal computer 6.

As shown in fig. 4 and 5, thetransducer clamping device 4 comprises afast chuck 41, atransition chuck 42, apressure loading assembly 43 and atransducer clamp 44, wherein thefast chuck 41 is mounted at the lower part of the Z-axislifting guide rail 23, and a Z-axis servo motor is connected with thefast chuck 41 through a lead screw so as to drive thefast chuck 41 to move up and down along the Z-axislifting guide rail 23; thetransition chuck 42 is connected with thequick chuck 41 through a quick-change connector, so that thetransition chuck 42 can be quickly detached and replaced on thequick chuck 41, the adaptation degree of different transducers to be tested is improved, and the structural complexity is reduced; thetransition clamp 42 is connected to apressure loading assembly 43 and atransducer clamp 44 is secured to thepressure loading assembly 43 and the lower end.

As shown in fig. 5, thepressure loading assembly 43 includes apressure loading portion 431 and alinear guide 432, and thepressure loading portion 431 is mounted on thetransition collet 42 through thelinear guide 432. In the process of adjusting the alignment between the ultrasonic transducer to be measured and thetest block 342, when the transducer is not yet in contact with thetest block 342, the transducer, the clamp thereof, and thepressure loading portion 431 drag thelinear guide 432 to move to the bottom of thetransition chuck 42 under the action of gravity, and a heavy object, generally 2kg, is loaded on thepressure loading portion 431. Thelinear guide 432 has the characteristic that the movement friction in the axial direction is very small, so that the swinging amount of the transverse force is weak, and the stability of the translation direction and the smoothness of the pressure applying direction can be ensured. When the Z-axislifting guide rail 23 drives thetransducer clamping device 4 to drive the transducer to contact the test block detection surface, at this time, under the action of the contact pressure, thetest block 342 will lift the transducer and the clamp thereof, thepressure loading portion 431 and thelinear guide rail 432 to move upward together, and when the pressure sensor arranged on the transition chuck 42 detects that the pressure between the pressure sensor and thepressure loading portion 431 is zero, the industrialpersonal computer 6 controls the Z-axislifting guide rail 23 to stop adjusting. The design of thepressure loading assembly 43 can ensure that the pressure in the vertical direction is not influenced by the small change of the Z-axis stroke or the unevenness of the test block detection surface, ensure the tight surface contact between the transducer to be detected and thetest block 342, improve the clamping stability, and simultaneously, after the transducer is contacted with the test block, the proper pressure can effectively measure the echo signal, thereby effectively detecting the performance of the transducer.

As shown in fig. 6, a vertical groove is formed in thetransition clamp 42, an L-shapedsecond pad 421 is disposed in the vertical groove, the width of thesecond pad 421 is smaller than the width of thelinear guide 432, and thelinear guide 432 is fixed in the vertical groove by a bolt abutting against the side surface of thesecond pad 421; thesecond pad 421 can protect thelinear guide 432 from damage and fix thelinear guide 432 more firmly.

Preferably, thepressure loading part 431 is provided with aweight tray 433, and weights with different weights are loaded on theweight tray 433, so that the pressure between different transducers to be measured and thetest block 342 can be adjusted, and the requirements of different kinds of measurement can be met.

As shown in fig. 7, the three-dimensional rotating platform 3 comprises ayawing rotating platform 31, a tiltingrotating platform 32, a pitching rotating platform 33, a testblock clamping device 34 and a digital level, wherein the pitching rotating platform 33, the tiltingrotating platform 32 and the yawing rotatingplatform 31 are sequentially installed from top to bottom, the swinging planes of the pitching rotating platform 33 and the tiltingrotating platform 32 are mutually vertical, and meanwhile, the pitching rotating platform 33, the tiltingrotating platform 32 and the yawing rotatingplatform 31 are respectively connected with an industrialpersonal computer 6; the testblock clamping device 34 is fixed on the pitching rotary table 33, and atest block 342 is clamped in the testblock clamping device 34; the digital level meter is arranged on the testblock clamping device 34 and connected with the industrialpersonal computer 6 and used for ensuring that the upper surface of thetest block 342 is horizontal, and the digital level meter is taken down from the testblock clamping device 34 after the leveling is finished; theyaw turntable 31 is used for adjusting thetest block 342 to axially rotate on the horizontal plane, and theroll turntable 32 and the pitch turntable 33 are used for adjusting the angle of thetest block 342 in two different dimensions, so that the leveling of thetest block 342 is controlled through the matching adjustment of the three dimensions. Preferably, the digital level may be a dual axis digital level. Preferably, the pitch turntable 33 and theroll turntable 32 employ electric angular displacement tables, and theyaw turntable 31 employs an electric azimuth table. In the embodiment, an HG30GA15 series angular displacement table and an HG10RA200 series azimuth turntable are selected;

preferably, theyaw turntable 31 of the three-dimensional turntable 3 is fixed in thesupport frame 1 through theturntable support 5, and theturntable support 5 can save materials on the premise of ensuring the stability of the turntable.

Preferably, the testblock clamping device 34 is a quick clamping vice, which can ensure to clamp thetest block 342 quickly and stably.

Preferably, afirst pad 341 is disposed inside the clamping portion of the testblock clamping device 34 to match the shape of thetest block 342, so as to protect the surface of the test block 342 from being damaged.

Preferably, be equipped with the transducer installing port on the transducer anchor clamps 44 and be located two clamping pieces on the installing port, through the tight transducer that awaits measuring of screw fixation clamp between two clamping pieces, through quick dismantlement on quick chuck can be followed to transitionchuck 42, and the transducer can be followed and quick dismantlement on transducer anchor clamps 44, has simplified just operation of calibration personnel, realizes the quick replacement to different appearance, size transducer, has reduced the complexity of device.

Preferably,industrial computer 6 installs on the Z axle, can significantly reduce among the prior art because industrial computer is too big from the transducer and the signal failure that appears to make the testing result more accurate.

Through tests, the technical scheme of the invention respectively controls the translation of the transducer to be tested and the rotation of the test block, particularly the three-dimensional rotating table works before the test, and only the three-dimensional translation table works in the calibration process, so that the coupling frequency of the platform movement is reduced, the measurement error is reduced, the measurement precision is improved, and the working stability of the system is enhanced.

Claims (8)

Translated fromChinese

1.一种超声换能器自动校准装置，包括支撑框架(1)，其特征在于，还包括三维平移台(2)、三维旋转台(3)和换能器夹持装置(4)，所述三维平移台(2)安装在支撑框架(1)上部，所述三维旋转台(3)固定在支撑框架(1)内部中央位置；所述换能器夹持装置(4)安装在三维平移台(2)上；三维旋转台(3)上安装有试块(342)；1. An ultrasonic transducer automatic calibration device, comprising a support frame (1), is characterized in that, also comprises a three-dimensional translation stage (2), a three-dimensional rotary stage (3) and a transducer clamping device (4), The three-dimensional translation stage (2) is installed on the upper part of the support frame (1), the three-dimensional rotation stage (3) is fixed at the inner central position of the support frame (1); the transducer clamping device (4) is installed on the three-dimensional translation stage (1). on the table (2); a test block (342) is installed on the three-dimensional rotary table (3);所述三维平移台(2)包括X轴平移导轨(21)、Y轴平移导轨(22)与Z轴升降导轨(23)；其中，所述X轴平移导轨(21)包括相互平行的X轴主动导轨(211)和X轴支撑导轨(212)；X轴伺服电机安装在X轴主动导轨(211)上，所述Y轴平移导轨(22)垂直安装在X轴主动导轨(211)与X轴支撑导轨(212)上方，X轴伺服电机通过第一丝杠连接Y轴平移导轨(22)，从而驱动Y轴平移导轨(22)沿X轴平移导轨(21)移动；Y轴伺服电机安装在Y轴导轨上，Z轴升降导轨(23)竖直安装在Y轴平移导轨(22)丝杠螺母固定座上，Y轴伺服电机通过第二丝杠连接Z轴升降导轨，从而驱动Z轴升降导轨(23)沿Y轴导轨平动；所述X轴伺服电机、Y轴伺服电机和Z轴伺服电机分别连接放大器控制箱(6)；The three-dimensional translation stage (2) comprises an X-axis translation guide rail (21), a Y-axis translation guide rail (22) and a Z-axis lifting guide rail (23); wherein the X-axis translation guide rail (21) comprises mutually parallel X-axis The active guide rail (211) and the X-axis support guide rail (212); the X-axis servo motor is installed on the X-axis active guide rail (211), and the Y-axis translation guide rail (22) is vertically installed on the X-axis active guide rail (211) and the X-axis active guide rail (211) Above the shaft support guide rail (212), the X-axis servo motor is connected to the Y-axis translation guide rail (22) through the first lead screw, thereby driving the Y-axis translation guide rail (22) to move along the X-axis translation guide rail (21); the Y-axis servo motor is installed On the Y-axis guide rail, the Z-axis lifting guide rail (23) is vertically installed on the Y-axis translation guide rail (22) screw nut holder, and the Y-axis servo motor is connected to the Z-axis lifting guide rail through the second screw to drive the Z-axis. The lifting guide rail (23) translates along the Y-axis guide rail; the X-axis servo motor, the Y-axis servo motor and the Z-axis servo motor are respectively connected to the amplifier control box (6);所述的三维旋转台(3)包括偏航转台(31)、侧倾转台(32)、俯仰转台(33)、试块夹持装置(34)和数字水平仪，其中，所述俯仰转台(33)、侧倾转台(32)和偏航转台(31)从上向下依次安装，且俯仰转台(33)、侧倾转台(32)的摆动平面相互垂直，同时，俯仰转台(33)、侧倾转台(32)和偏航转台(31)分别连接工控机(6)；试块夹持装置(34)固定在俯仰转台(33)上，试块夹持装置(34)中夹持有试块(342)；数字水平仪安装在试块夹持装置(34)上且连接工控机(6)。The three-dimensional turntable (3) comprises a yaw turntable (31), a roll turntable (32), a pitch turntable (33), a test block clamping device (34) and a digital level, wherein the pitch turntable (33) ), the roll turntable (32) and the yaw turntable (31) are installed sequentially from top to bottom, and the swing planes of the pitch turntable (33) and the roll turntable (32) are perpendicular to each other. The tilting table (32) and the yaw turntable (31) are respectively connected to the industrial computer (6); the test block holding device (34) is fixed on the pitching turntable (33), and the test block holding device (34) holds a test block holding device (34). block (342); the digital level is installed on the test block holding device (34) and connected to the industrial computer (6).2.如权利要求1所述的超声换能器自动校准装置，其特征在于，所述的换能器夹持装置(4)包括快速卡盘(41)、过渡夹头(42)、压力加载组件(43)和换能器夹具(44)，所述快速卡盘(41)安装在Z轴升降导轨(23)下部，Z轴伺服电机通过丝杠连接快速卡盘(41)，从而驱动快速卡盘(41)沿Z轴升降导轨(23)上下运动；过渡夹头(42)与快速卡盘(41)通过快换接头连接；所述过渡夹头(42)与压力加载组件(43)连接，换能器夹具(44)固定在压力加载组件(43)下端。2. The ultrasonic transducer automatic calibration device according to claim 1, wherein the transducer clamping device (4) comprises a quick chuck (41), a transition chuck (42), a pressure loading The assembly (43) and the transducer fixture (44), the quick chuck (41) is installed on the lower part of the Z-axis lifting guide rail (23), and the Z-axis servo motor is connected to the quick chuck (41) through the screw, so as to drive the quick The chuck (41) moves up and down along the Z-axis lifting guide rail (23); the transition chuck (42) is connected with the quick chuck (41) through a quick-change joint; the transition chuck (42) and the pressure loading assembly (43) connected, the transducer clamp (44) is fixed on the lower end of the pressure loading assembly (43).3.如权利要求2所述的超声换能器自动校准装置，其特征在于，所述的压力加载组件(43)包括压力加载部(431)和直线导轨(432)，所述的压力加载部(431)通过直线导轨(432)安装在过渡夹头(42)上。3. The ultrasonic transducer automatic calibration device according to claim 2, wherein the pressure loading assembly (43) comprises a pressure loading part (431) and a linear guide rail (432), and the pressure loading part (431) is mounted on the transition chuck (42) through a linear guide (432).4.如权利要求3所述的超声换能器自动校准装置，其特征在于，所述过渡夹头(42)上有一竖直槽，竖直槽内设有L形的第二垫板(421)，所述第二垫板(421)的宽度小于直线导轨(432)的宽度，直线导轨(432)通过顶在第二垫板(421)侧面的螺栓固定在竖直槽内。4. The ultrasonic transducer automatic calibration device according to claim 3, characterized in that, there is a vertical groove on the transition chuck (42), and an L-shaped second backing plate (421) is arranged in the vertical groove. ), the width of the second backing plate (421) is smaller than the width of the linear guide rail (432), and the linear guide rail (432) is fixed in the vertical groove by bolts on the side of the second backing plate (421).5.如权利要求3所述的超声换能器自动校准装置，其特征在于，所述的压力加载部(431)上设置有砝码托盘(433)。5. The ultrasonic transducer automatic calibration device according to claim 3, wherein a weight tray (433) is provided on the pressure loading part (431).6.如权利要求1所述的超声换能器自动校准装置，其特征在于，所述试块夹持装置(34)采用快速夹紧虎钳，能够保证快速且稳定夹持试块(342)。6. The ultrasonic transducer automatic calibration device according to claim 1, wherein the test block clamping device (34) adopts a quick clamping vise, which can ensure fast and stable clamping of the test block (342) .7.如权利要求1所述的超声换能器自动校准装置，其特征在于，所述试块夹持装置(34)的夹持部位内侧设有与试块(342)形状相匹配的第一垫板(341)。7. The ultrasonic transducer automatic calibration device according to claim 1, wherein the inner side of the clamping part of the test block clamping device (34) is provided with a first shape matching the shape of the test block (342). Backing plate (341).8.如权利要求1所述的超声换能器自动校准装置，其特征在于，所述工控机(6)安装在Z轴上。8. The ultrasonic transducer automatic calibration device according to claim 1, wherein the industrial computer (6) is installed on the Z-axis.

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