CN105300578A - Ultrasonic-wave stress detection device capable of adjusting acoustic beam angle and test area - Google Patents
Ultrasonic-wave stress detection device capable of adjusting acoustic beam angle and test area Download PDFInfo
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Abstract
一种可调节声束角及测试区域的超声波应力检测设备，包括：中心定位台(100)；中心定位台(100)相对侧面上固定有平行导轨架(200)；每个平行导轨架(200)均滑动连接玻璃底座(300)，玻璃底座(300)的上部为具有凸圆弧导轨面(311)的U型槽轨(310)，探头固定楔块(400)与所述U型槽轨(310)的侧壁滑动连接，且探头固定楔块(400)的凹圆弧面与U型槽轨(310)的凸圆弧导轨面(311)配合；探头固定楔块(400)上部设置有探头固定腔(500)，用于固定超声探头。该设备可实现对焊缝、热影响区第一临界角的调整修正和不同种材料的残余应力测试；且该设备可实现待测工件不同区域面积内的残余应力测试。
An ultrasonic stress detection device capable of adjusting the sound beam angle and the test area, comprising: a central positioning platform (100); parallel rail frames (200) are fixed on opposite sides of the center positioning table (100); each parallel rail frame (200 ) are slidingly connected to the glass base (300), the upper part of the glass base (300) is a U-shaped groove track (310) with a convex arc guide surface (311), and the probe fixing wedge (400) and the U-shaped groove track The side wall of (310) is slidingly connected, and the concave arc surface of the probe fixing wedge (400) cooperates with the convex arc guide surface (311) of the U-shaped groove rail (310); the upper part of the probe fixing wedge (400) is set There is a probe fixing cavity (500) for fixing the ultrasound probe. The equipment can realize the adjustment and correction of the first critical angle of the weld seam and the heat-affected zone, and the residual stress test of different materials; and the equipment can realize the residual stress test in different areas of the workpiece to be tested.
Description
技术领域technical field
本发明涉及一种可调节声束角及测试区域的超声波应力检测设备，属于残余应力测试领域。The invention relates to an ultrasonic stress detection device capable of adjusting the sound beam angle and the testing area, and belongs to the field of residual stress testing.
背景技术Background technique
材料在外力作用下产生塑形变形时产生残余应力，而弹性变形不会产生残余应力。残余应力是工件质量评估的一个主要标准，对工件的服役具有很大危害，例如加速疲劳裂纹的萌生、降低疲劳寿命、发生应力腐蚀、变形、失稳等，因此对残余应力的无损检测意义较大。Residual stress is generated when the material undergoes plastic deformation under the action of external force, while elastic deformation does not generate residual stress. Residual stress is a main criterion for workpiece quality evaluation, which has great harm to the service of the workpiece, such as accelerating the initiation of fatigue cracks, reducing fatigue life, stress corrosion, deformation, instability, etc., so the significance of nondestructive testing for residual stress is relatively large Big.
超声波利用声弹性原理对残余应力进行测试，声弹性原理是指超声波的传播速度和工件中的应力呈现线性关系。目前使用较多、较为成熟的超声波测试波形为临界折射纵波(LCR波)，临界折射纵波是纵波以第一临界角入射时产生的特殊模式，平行待测工件的表面传播。固定收发探头之间的距离，根据临界折射纵波在工件中传播时间的变化则可以测试出工件中残余应力的状态。基于临界折射纵波的残余应力检测法的关键在于确定待测工件材料的第一临界角θ，arcsinθ＝(V1/V2)，V1待测工件中超声波的传播速度，与待测工件的材料和组织结构有关，V2为玻璃楔块中超声波的传播速度。Ultrasound uses the principle of acoustoelasticity to test the residual stress. The principle of acoustoelasticity refers to the linear relationship between the propagation speed of ultrasonic waves and the stress in the workpiece. At present, the most used and mature ultrasonic test waveform is the critical refraction longitudinal wave (L CR wave). The critical refraction longitudinal wave is a special mode generated when the longitudinal wave is incident at the first critical angle, and propagates parallel to the surface of the workpiece to be tested. The distance between the transceiver probes is fixed, and the state of the residual stress in the workpiece can be tested according to the change of the propagation time of the critical refracted longitudinal wave in the workpiece. The key to the residual stress detection method based on critical refraction longitudinal wave is to determine the first critical angle θ of the workpiece material to be tested, arcsinθ=(V 1 /V 2 ), V 1 the propagation velocity of ultrasonic waves in the workpiece to be tested, and the The material is related to the organizational structure, and V 2 is the propagation speed of the ultrasonic wave in the glass wedge.
现有的超声波残余应力检测设备的超声波收发探头固定于一个有机玻璃楔块的两个相对的倾斜面，测试区域固定，且相对于待测工件表面的倾斜角度固定。这个固定的倾斜角是基于待测焊接工件的母材测试计算出的第一临界角，而焊缝、热影响区域和母材的组织之间存在较大差异；因此第一临界角也存在很大不同，用基于母材计算出的第一临界角测试焊缝和热影响区域的残余应力必然存在较大测量误差。而且评估残余应力通常都是对两个方向(平行焊缝方向和垂直于焊缝方向)的残余应力测试，而现有的超声波残余应力检测设备一次仅能对工件的一个方向(平行焊缝方向或者垂直于焊缝方向)进行残余应力测试，换到另一个方向时，很容易导致前后测试的位置不一致或方向不垂直，产生较大的测试误差。The ultrasonic transceiver probes of the existing ultrasonic residual stress detection equipment are fixed on two opposite inclined surfaces of a plexiglass wedge, the test area is fixed, and the inclination angle relative to the surface of the workpiece to be tested is fixed. This fixed inclination angle is the first critical angle calculated based on the base metal test of the welded workpiece to be tested, and there is a large difference between the weld seam, the heat-affected zone and the structure of the base metal; therefore, the first critical angle also has a large difference. There is a big difference between the first critical angle calculated based on the base metal and the residual stress of the weld and heat-affected zone. There must be a large measurement error. Moreover, the evaluation of residual stress is usually performed on two directions (parallel to the direction of the weld and perpendicular to the direction of the weld), while the existing ultrasonic residual stress testing equipment can only test one direction of the workpiece (parallel to the direction of the weld) at a time. Or perpendicular to the direction of the weld) for residual stress test, when changing to another direction, it is easy to cause inconsistent positions or non-vertical directions of the front and rear tests, resulting in large test errors.
发明内容Contents of the invention
本发明的目的是提供一种可调节声束角及测试区域的超声波应力检测设备。该设备可调节超声波收发探头与待测工件表面之间的角度(超声波测试的声束角)，不仅可实现对焊缝、热影响区第一临界角的调整修正；还可进行不同种材料的残余应力测试；且该设备可调节超声波收发探头之间距离，实现待测工件不同区域面积内的残余应力测试。The object of the present invention is to provide an ultrasonic stress testing device capable of adjusting the sound beam angle and testing area. The equipment can adjust the angle between the ultrasonic transceiver probe and the surface of the workpiece to be tested (sound beam angle of ultrasonic testing), not only can realize the adjustment and correction of the first critical angle of the weld seam and heat-affected zone; it can also perform different materials Residual stress test; and the device can adjust the distance between the ultrasonic transceiver probes to realize the residual stress test in different areas of the workpiece to be tested.
本发明实现其发明目的所采取的技术方案是：一种可调节声束角及测试区域的超声波应力检测设备，包括：中心定位台；所述中心定位台相对侧面上固定有平行导轨架，固定于中心定位台相对侧面的一对平行导轨架在同一条轴线上；所述每个平行导轨架均滑动连接有玻璃底座，所述玻璃底座的上部为具有凸圆弧导轨面的U型槽轨，探头固定楔块与所述U型槽轨的侧壁滑动连接，且探头固定楔块的凹圆弧面与U型槽轨的凸圆弧导轨面配合；所述探头固定楔块上部设置有探头固定腔，用于固定超声探头。The technical solution adopted by the present invention to realize the purpose of the invention is: a kind of ultrasonic stress detection equipment with adjustable sound beam angle and test area, comprising: a central positioning platform; parallel guide rail frames are fixed on the opposite sides of the central positioning platform, fixed A pair of parallel rail frames on opposite sides of the central positioning platform are on the same axis; each of the parallel rail frames is slidably connected to a glass base, and the upper part of the glass base is a U-shaped groove rail with a convex arc rail surface , the probe fixed wedge is slidingly connected with the side wall of the U-shaped groove rail, and the concave arc surface of the probe fixed wedge is matched with the convex arc guide rail surface of the U-shaped groove rail; the upper part of the probe fixed wedge is provided with The probe fixing cavity is used for fixing the ultrasonic probe.
本发明的使用方法是：The using method of the present invention is:
a、将中心定位台和固定于中心定位台的平行导轨架固定在待测工件表面，根据待测区域调节每个玻璃底座在平行导轨架上的位置；a. Fix the central positioning table and the parallel guide rail frame fixed on the central positioning table on the surface of the workpiece to be tested, and adjust the position of each glass base on the parallel guide rail frame according to the area to be tested;
b、在每个玻璃底座和待测工件表面之间，玻璃底座上部U型槽轨的凸圆弧导轨面和探头固定楔块的下部的凹圆弧面之间涂抹耦合剂；b. Between each glass base and the surface of the workpiece to be tested, apply coupling agent between the convex arc guide surface of the U-shaped groove rail on the upper part of the glass base and the concave arc surface of the lower part of the probe fixing wedge;
c、调节探头固定楔块在U型槽轨上的位置，即可调节超声探头与待测工件表面之间的倾角，达到通过工件母材测试计算的第一临界角；测量焊缝与热影响区的残余应力时，微调相对的探头固定楔块在U型槽轨上的位置，使超声探头与工件表面的倾角为相应测量区域的第一临界角，即可进行残余应力测试。c. Adjust the position of the probe fixing wedge on the U-shaped groove rail to adjust the inclination angle between the ultrasonic probe and the surface of the workpiece to be tested to reach the first critical angle calculated by the workpiece base material test; measure the weld seam and thermal influence When measuring the residual stress in the area, fine-tune the position of the relative probe fixing wedge on the U-shaped groove rail, so that the inclination angle between the ultrasonic probe and the workpiece surface is the first critical angle of the corresponding measurement area, and then the residual stress test can be carried out.
d、测试另一个工件材料的残余应力时，调节探头固定楔块在U型槽轨上的位置，使超声探头与待测工件表面之间的倾角达到另一个工件材料的第一临界角；实现对不同材料的残余应力测试。d. When testing the residual stress of another workpiece material, adjust the position of the probe fixing wedge on the U-shaped groove rail, so that the inclination angle between the ultrasonic probe and the surface of the workpiece to be tested reaches the first critical angle of another workpiece material; Residual stress tests on different materials.
其中，固定于中心定位台相对侧面的一对平行导轨架上的相对玻璃底座上的相对的超声波波探头一个为接收探头，一个为发射探头；发射探头发射超声纵波，通过检测接收探头的超声波波幅衰减情况确定超声探头与工件表面的倾角是否为第一临界角，Among them, one of the relative ultrasonic wave probes fixed on the opposite glass base on a pair of parallel guide rail frames on the opposite side of the central positioning platform is a receiving probe, and the other is a transmitting probe; The attenuation determines whether the inclination angle between the ultrasonic probe and the workpiece surface is the first critical angle,
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
一、通过调节玻璃底座在平行导轨架上的位置，进而调节超声收发探头之间的距离，根据工件状态和生产需要，实现不同区域内残余应力的测试，满足客户和生产需要。1. By adjusting the position of the glass base on the parallel guide rail frame, and then adjusting the distance between the ultrasonic transceiver probes, according to the state of the workpiece and production needs, the residual stress test in different areas can be realized to meet the needs of customers and production.
二、通过调节探头固定楔块在U型槽轨上的位置，即可调节超声波探头与待测工件表面之间的角度(超声波测试的声束角)，可进行不同种工件材料的残余应力测试，降低检测设备的生产成本以及加工周期，提高工作效率。2. By adjusting the position of the probe fixing wedge on the U-shaped groove rail, the angle between the ultrasonic probe and the surface of the workpiece to be tested (beam angle of ultrasonic testing) can be adjusted, and the residual stress test of different workpiece materials can be carried out , reduce the production cost and processing cycle of testing equipment, and improve work efficiency.
三、可以根据超声波探头接收到的超声波波幅的衰减情况，微调探头固定楔块在U型槽轨上的位置，实现对焊缝、热影响区的残余应力测试时第一临界角的调整修正，提高检测精度。3. According to the attenuation of the ultrasonic wave amplitude received by the ultrasonic probe, the position of the fixed wedge of the probe on the U-shaped groove rail can be fine-tuned to realize the adjustment and correction of the first critical angle during the residual stress test of the weld seam and the heat-affected zone. Improve detection accuracy.
进一步，本发明所述中心定位台的中间为圆形定位孔。Further, the middle of the central positioning platform of the present invention is a circular positioning hole.
这样，有利于更精确地将检测设备固定于工件的待检测区域。In this way, it is beneficial to more accurately fix the detection device on the area to be detected of the workpiece.
进一步，本发明所述固定于中心定位台侧面的平行导轨架为互相垂直的两对。Further, the parallel guide rail frames fixed on the side of the central positioning platform in the present invention are two pairs perpendicular to each other.
这样，可以不转动中心定位台，即可对待测工件的同一测试位置两个方向(平行焊缝方向和垂直焊缝方向)的残余应力进行测试，避免因转动中心定位台导致的前后测试位置偏差或测试方向不垂直，提高残余应力测试效率和应力测试精度。In this way, the residual stress in two directions (parallel to the weld seam direction and perpendicular to the weld seam direction) of the same test position of the workpiece to be tested can be tested without rotating the center positioning table, so as to avoid the front and rear test position deviation caused by the rotation of the center positioning table Or the test direction is not vertical to improve the residual stress test efficiency and stress test accuracy.
进一步，本发明所述平行导轨架与玻璃底座滑动连接的具体方式是：所述平行导轨架的两导轨侧壁均设有供定位螺钉穿过的水平通槽，玻璃底座位于两导轨之间，玻璃底座与两导轨侧壁相对的侧面上设有与定位螺钉配合的螺纹盲孔；定位螺钉穿过两导轨侧壁的水平通槽拧入玻璃底座侧面的螺纹盲孔，可使玻璃底座沿平行导轨架滑动，并可通过拧紧定位螺钉使定位螺钉的螺钉头压紧导轨侧壁定位。Further, the specific method of sliding connection between the parallel guide rail frame and the glass base in the present invention is: the side walls of the two guide rails of the parallel guide rail frame are provided with horizontal through grooves for positioning screws to pass through, and the glass base is located between the two guide rails. On the side of the glass base opposite to the side walls of the two guide rails, there are threaded blind holes matched with the positioning screws; The guide rail frame slides, and the screw head of the set screw can be pressed against the side wall of the guide rail for positioning by tightening the set screw.
这种连接方式可以方便快捷地调节玻璃底座在平行导轨架上的位置，实现对工件不同距离范围内的残余应力测试，满足现场生产需要，也便于调节收发超声波探头之间的距离，避免超声波衰减造成的较大测试误差。This connection method can conveniently and quickly adjust the position of the glass base on the parallel guide rail frame, realize the residual stress test of the workpiece in different distances, meet the needs of on-site production, and also facilitate the adjustment of the distance between the sending and receiving ultrasonic probes to avoid ultrasonic attenuation resulting in large test errors.
再进一步，本发明所述平行轨道架两导轨侧壁的水平通槽边缘设置有刻度。Still further, scales are provided on the edges of the horizontal slots on the side walls of the two guide rails of the parallel rail frame in the present invention.
这样，可以更准确地调节相对的玻璃底座在平行导轨架上的位置，更精确地调节超声波收发换能器之间的距离，提高对测试区域的定位精度。In this way, the position of the opposite glass base on the parallel guide rail frame can be adjusted more accurately, the distance between the ultrasonic transceiver transducers can be adjusted more accurately, and the positioning accuracy of the test area can be improved.
更进一步，本发明所述平行导轨架的每条导轨侧壁的水平通槽为平行的上下两条，相对的玻璃底座侧面的螺纹盲孔也为上下两个，所述上部的水平通槽与上部的螺纹盲孔位于同一水平位置，下部的水平通槽与下部的螺纹盲孔位于同一水平位置。Furthermore, the horizontal through grooves on the side walls of each guide rail of the parallel guide rail frame of the present invention are two parallel upper and lower ones, and the opposite threaded blind holes on the side of the glass base are also two upper and lower ones. The upper threaded blind hole is located at the same horizontal position, and the lower horizontal through groove and the lower threaded blind hole are located at the same horizontal position.
这样，可以使玻璃底座的固定和滑动更为稳定，提高测试的准确性。In this way, the fixing and sliding of the glass base can be made more stable, and the accuracy of the test can be improved.
进一步，本发明所述U型槽轨的侧壁与探头固定楔块滑动连接的具体方式是：所述U型槽轨的两侧壁均设有供锁紧螺钉穿过的、与凸圆弧导轨面平行的弧形通槽，探头固定楔块与U型槽轨侧壁相对的侧面上设有与锁紧螺钉配合的螺纹盲孔；锁紧螺钉穿过U型槽轨侧壁的弧形通槽，拧入探头固定楔块侧面的螺纹盲孔，可使探头固定楔块沿U型槽轨的凸圆弧导轨面滑动，并可通过拧紧锁紧螺钉使锁紧螺钉的螺钉头压紧U型槽轨侧壁锁紧。Further, the specific way in which the side wall of the U-shaped groove rail of the present invention is slidably connected to the fixed wedge of the probe is: both side walls of the U-shaped groove rail are provided with a convex arc for the locking screw to pass through. The arc-shaped through groove parallel to the surface of the guide rail, the side of the probe fixing wedge opposite to the side wall of the U-shaped groove rail is provided with a threaded blind hole matched with the locking screw; the locking screw passes through the arc of the side wall of the U-shaped groove rail The through slot is screwed into the threaded blind hole on the side of the probe fixing wedge, so that the probe fixing wedge can slide along the convex arc guide rail surface of the U-shaped groove rail, and the screw head of the locking screw can be compressed by tightening the locking screw The side wall of the U-shaped groove rail is locked.
这样的连接方式可以方便快捷地调节探头固定楔块在U型槽轨上的位置，从而调节探头相对于测试平面的角度，实现同一固定设备对不同材料残余应力测试以及修正组织不均匀带来的第一临界角微观变化。This connection method can conveniently and quickly adjust the position of the probe fixing wedge on the U-shaped groove rail, thereby adjusting the angle of the probe relative to the test plane, realizing the residual stress test of different materials with the same fixed equipment and correcting the problems caused by uneven tissue Microscopic changes in the first critical angle.
再进一步，本发明所述U型槽轨侧壁的弧形通槽边缘设置有倾斜角刻度。Still further, the edge of the arc-shaped through groove on the side wall of the U-shaped groove rail in the present invention is provided with an inclination angle scale.
这样，便于探头固定楔块的精确定位，即超声探头与待测工件表面倾斜角度的精确控制。In this way, the precise positioning of the probe fixing wedge is facilitated, that is, the precise control of the inclination angle between the ultrasonic probe and the surface of the workpiece to be measured.
进一步，本发明所述探头固定楔块的凹圆弧面与U型槽轨的凸圆弧导轨面之间留有1-2mm的装配公差，检测时通过耦合剂填补所述装配公差。Further, there is an assembly tolerance of 1-2 mm between the concave arc surface of the probe fixing wedge and the convex arc guide rail surface of the U-shaped groove rail in the present invention, and the assembly tolerance is filled by coupling agent during detection.
这样，方便装配，使用时在探头固定楔块的凹圆弧面和U型槽轨的凸圆弧导轨面之间均匀涂上耦合剂，使玻璃底座和探头固定楔块的耦合状态更好，避免由界面耦合状态不好导致超声波衰减情况发生。In this way, it is convenient to assemble. When in use, evenly coat the coupling agent between the concave arc surface of the probe fixing wedge and the convex arc guide surface of the U-shaped groove rail, so that the coupling state between the glass base and the probe fixing wedge is better. Avoid ultrasonic attenuation caused by poor interface coupling state.
下面结合附图和具体实施方式对本发明做进一步描述。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
附图说明Description of drawings
图1为本发明实施例一的正视结构示意图。Fig. 1 is a front view structural diagram of Embodiment 1 of the present invention.
图2为本发明实施例一的俯视结构示意图。FIG. 2 is a schematic top view of the first embodiment of the present invention.
图3为本发明实施例二的正视结构示意图。Fig. 3 is a schematic diagram of the front view of the second embodiment of the present invention.
图4为本发明实施例二的俯视结构示意图。FIG. 4 is a schematic top view of the second embodiment of the present invention.
具体实施方式detailed description
实施例一Embodiment one
图1、图2示出，本发明的一种具体实施方式是，一种可调节声束角及测试区域的超声波应力检测设备，包括：中心定位台100；所述中心定位台100相对侧面上固定有平行导轨架200，固定于中心定位台100相对侧面的一对平行导轨架200在同一条轴线上；所述每个平行导轨架200均滑动连接有玻璃底座300，所述玻璃底座300的上部为具有凸圆弧导轨面311的U型槽轨310，探头固定楔块400与所述U型槽轨310的侧壁滑动连接，且探头固定楔块400的凹圆弧面与U型槽轨310的凸圆弧导轨面311配合；所述探头固定楔块400上部设置有探头固定腔500，用于固定超声探头。Figures 1 and 2 show that a specific embodiment of the present invention is an ultrasonic stress detection device that can adjust the sound beam angle and the test area, including: a central positioning platform 100; on the opposite side of the central positioning platform 100 The parallel guide rail frame 200 is fixed, and a pair of parallel guide rail frames 200 fixed on the opposite sides of the central positioning platform 100 are on the same axis; each of the parallel guide rail frames 200 is slidably connected to a glass base 300, and the glass base 300 The upper part is a U-shaped groove rail 310 with a convex arc guide rail surface 311. The probe fixing wedge 400 is slidably connected with the side wall of the U-shaped groove rail 310, and the concave arc surface of the probe fixing wedge 400 is in contact with the U-shaped groove. The convex arc guide rail surface 311 of the rail 310 cooperates; the probe fixing wedge 400 is provided with a probe fixing cavity 500 for fixing the ultrasonic probe.
本例中所述中心定位台100的中间为圆形定位孔110。In this example, the center of the central positioning platform 100 is a circular positioning hole 110 .
本例中所述固定于中心定位台100侧面的平行导轨架200为互相垂直的两对。In this example, the parallel guide rail frames 200 fixed on the side of the central positioning platform 100 are two pairs perpendicular to each other.
本例中所述平行导轨架200的两导轨侧壁均设有供定位螺钉600穿过的水平通槽210，玻璃底座300位于两导轨之间，玻璃底座300与两导轨侧壁相对的侧面上设有与定位螺钉600配合的螺纹盲孔；定位螺钉600穿过两导轨侧壁的水平通槽210拧入玻璃底座300侧面的螺纹盲孔，可使玻璃底座300沿平行导轨架200滑动，并通过拧紧定位螺钉600使螺钉头压紧导轨侧壁定位。所述平行轨道架200两导轨侧壁的水平通槽210边缘设置有刻度。The side walls of the two guide rails of the parallel guide rail frame 200 described in this example are all provided with horizontal through grooves 210 for the positioning screws 600 to pass through. A threaded blind hole matched with the positioning screw 600 is provided; the positioning screw 600 is screwed into the threaded blind hole on the side of the glass base 300 through the horizontal through groove 210 of the side walls of the two guide rails, so that the glass base 300 can slide along the parallel guide rail frame 200, and By tightening the positioning screw 600, the screw head is pressed against the side wall of the guide rail for positioning. Scales are provided on the edges of the horizontal through grooves 210 on the side walls of the two guide rails of the parallel rail frame 200 .
本例中所述平行导轨架200的每条导轨侧壁的水平通槽210为平行的上下两条，相对的玻璃底座300侧面的螺纹盲孔也为上下两个，所述上部的水平通槽211与上部的螺纹盲孔位于同一水平位置，下部的水平通槽212与下部的螺纹盲孔位于同一水平位置。The horizontal through grooves 210 of each guide rail side wall of the parallel guide rail frame 200 described in this example are two parallel upper and lower ones, and the threaded blind holes on the side of the opposite glass base 300 are also two upper and lower ones, and the upper horizontal through grooves 211 is located at the same horizontal position as the upper threaded blind hole, and the lower horizontal through groove 212 is located at the same horizontal position as the lower threaded blind hole.
本例中所述U型槽轨310的侧壁与探头固定楔块400滑动连接的具体方式是：所述U型槽轨310的两侧壁均设有供锁紧螺700钉穿过的、与凸圆弧导轨面311平行的弧形通槽312，探头固定楔块400与U型槽轨310侧壁相对的侧面上设有与锁紧螺钉700配合的螺纹盲孔；锁紧螺钉700穿过U型槽轨310侧壁的弧形通槽312，拧入探头固定楔块400侧面的螺纹盲孔，可使探头固定楔块400沿U型槽轨310的凸圆弧导轨面311滑动，并通过拧紧锁紧螺钉700使螺钉头压紧U型槽轨310侧壁锁紧。所述U型槽轨310侧壁的弧形通槽312边缘设置有倾斜角刻度。The specific manner in which the side wall of the U-shaped groove rail 310 is slidably connected to the probe fixing wedge 400 in this example is: both side walls of the U-shaped groove rail 310 are provided with holes for the locking screws 700 to pass through. The arc-shaped through groove 312 parallel to the convex arc guide rail surface 311, the side of the probe fixing wedge 400 opposite to the side wall of the U-shaped groove rail 310 is provided with a threaded blind hole matched with the locking screw 700; the locking screw 700 penetrates Through the arc-shaped through groove 312 on the side wall of the U-shaped groove rail 310, screw it into the threaded blind hole on the side of the probe fixing wedge 400, so that the probe fixing wedge 400 can slide along the convex arc guide rail surface 311 of the U-shaped groove rail 310, And by tightening the locking screw 700, the screw head is pressed against the side wall of the U-shaped groove rail 310 for locking. The edge of the arc-shaped through groove 312 on the side wall of the U-shaped groove rail 310 is provided with an inclination angle scale.
本例中所述探头固定楔块400的凹圆弧面与U型槽轨310的凸圆弧导轨面311之间留有1-2mm的装配公差，检测时通过耦合剂填补所述装配公差。In this example, there is an assembly tolerance of 1-2mm between the concave arc surface of the probe fixing wedge 400 and the convex arc guide rail surface 311 of the U-shaped groove rail 310, and the assembly tolerance is filled by couplant during detection.
实施例二Embodiment two
图3、图4示出，本发明的另一种具体实施方式是，一种可调节声束角及测试区域的超声波应力检测设备，包括：中心定位台100；所述中心定位台100相对侧面上固定有平行导轨架200，固定于中心定位台100相对侧面的一对平行导轨架200在同一条轴线上；所述每个平行导轨架200均滑动连接有玻璃底座300，所述玻璃底座300的上部为具有凸圆弧导轨面311的U型槽轨310，探头固定楔块400与所述U型槽轨310的侧壁滑动连接，且探头固定楔块400的凹圆弧面与U型槽轨310的凸圆弧导轨面311配合；所述探头固定楔块400上部设置有探头固定腔500，用于固定超声探头。Figure 3 and Figure 4 show that another specific embodiment of the present invention is an ultrasonic stress detection device that can adjust the beam angle and the test area, including: a central positioning platform 100; the opposite side of the central positioning platform 100 A pair of parallel guide rail frames 200 fixed on the opposite sides of the central positioning platform 100 are on the same axis; each parallel rail frame 200 is slidably connected with a glass base 300, and the glass base 300 The upper part is a U-shaped groove rail 310 with a convex arc guide rail surface 311, the probe fixing wedge 400 is slidingly connected with the side wall of the U-shaped groove rail 310, and the concave arc surface of the probe fixing wedge 400 is in line with the U-shaped The convex arc guide rail surface 311 of the groove rail 310 cooperates; the probe fixing wedge 400 is provided with a probe fixing cavity 500 for fixing the ultrasonic probe.
本例中所述中心定位台100的中间为圆形定位孔110。In this example, the center of the central positioning platform 100 is a circular positioning hole 110 .
本例中所述平行导轨架200的两导轨侧壁均设有供定位螺钉600穿过的水平通槽210，玻璃底座300位于两导轨之间，玻璃底座300与两导轨侧壁相对的侧面上设有与定位螺钉600配合的螺纹盲孔；定位螺钉600穿过两导轨侧壁的水平通槽210拧入玻璃底座300侧面的螺纹盲孔，可使玻璃底座300沿平行导轨架200滑动，并可通过拧紧定位螺钉600使螺钉头压紧导轨侧壁来定位。所述平行轨道架200两导轨侧壁的水平通槽210边缘设置有刻度。The side walls of the two guide rails of the parallel guide rail frame 200 described in this example are all provided with horizontal through grooves 210 for the positioning screws 600 to pass through. A threaded blind hole matched with the positioning screw 600 is provided; the positioning screw 600 is screwed into the threaded blind hole on the side of the glass base 300 through the horizontal through groove 210 of the side walls of the two guide rails, so that the glass base 300 can slide along the parallel guide rail frame 200, and It can be positioned by tightening the set screw 600 so that the head of the screw presses against the side wall of the guide rail. Scales are provided on the edges of the horizontal through grooves 210 on the side walls of the two guide rails of the parallel rail frame 200 .
本例中所述U型槽轨310的侧壁与探头固定楔块400滑动连接的具体方式是：所述U型槽轨310的两侧壁均设有供锁紧螺700钉穿过的、与凸圆弧导轨面311平行的弧形通槽312，探头固定楔块400与U型槽轨310侧壁相对的侧面上设有与锁紧螺钉700配合的螺纹盲孔；锁紧螺钉700穿过U型槽轨310侧壁的弧形通槽312，拧入探头固定楔块400侧面的螺纹盲孔，可使探头固定楔块400沿U型槽轨310的凸圆弧导轨面311滑动，并通过拧紧锁紧螺钉700使螺钉头压紧U型槽轨310侧壁锁紧。所述U型槽轨310侧壁的弧形通槽312边缘设置有倾斜角刻度。The specific manner in which the side wall of the U-shaped groove rail 310 is slidably connected to the probe fixing wedge 400 in this example is: both side walls of the U-shaped groove rail 310 are provided with holes for the locking screws 700 to pass through. The arc-shaped through groove 312 parallel to the convex arc guide rail surface 311, the side of the probe fixing wedge 400 opposite to the side wall of the U-shaped groove rail 310 is provided with a threaded blind hole matched with the locking screw 700; the locking screw 700 penetrates Through the arc-shaped through groove 312 on the side wall of the U-shaped groove rail 310, screw it into the threaded blind hole on the side of the probe fixing wedge 400, so that the probe fixing wedge 400 can slide along the convex arc guide rail surface 311 of the U-shaped groove rail 310, And by tightening the locking screw 700, the screw head is pressed against the side wall of the U-shaped groove rail 310 for locking. The edge of the arc-shaped through groove 312 on the side wall of the U-shaped groove rail 310 is provided with an inclination angle scale.
本例中所述探头固定楔块400的凹圆弧面与U型槽轨310的凸圆弧导轨面311之间留有1-2mm的装配公差，检测时通过耦合剂填补所述装配公差。In this example, there is an assembly tolerance of 1-2mm between the concave arc surface of the probe fixing wedge 400 and the convex arc guide rail surface 311 of the U-shaped groove rail 310, and the assembly tolerance is filled by couplant during detection.
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