Stress gauge device with phi angle rotation

Abstract

The invention discloses a stress gauge device with a phi angle rotation function. The stress gauge device comprises a mechanical arm, a phi angle rotation assembly, an XY axis translation assembly, a stress gauge assembly, an infrared laser assembly and a camera assembly. The phi angle rotation assembly drives the stress meter assembly to rotate by + / -90 degrees through a motor so as to meet stress tests of various angles. The stress gauge assembly is meshed with the arc-shaped guide rail through a motor driving gear, and drives the roller to slide along the arc-shaped guide rail, so that the ray tube and the detector move around the circle center of the arc-shaped guide rail, and stress detection of a detected object is realized. The hanging ring, the cable and the stress gauge assembly rotate synchronously, so that the stability and reliability of the cable are ensured, and the cable is prevented from being folded and loosened to affect use. The X-ray stress detector can perform X-ray stress detection on parts in all directions, is an upgrade and reconstruction of a conventional stress detector, and is suitable for wide popularization.

Description

Technical Field

[0001] The invention relates to the field of stress testing, in particular to a stress meter detection device which can be adjusted in multiple dimensions and can electrically and horizontally adjust the rotation direction of the stress meter. Background Art

[0002] The principle of stress detection technology is to rely on the X-rays emitted by the X-ray tube, which are irradiated on the sample and then reflected on the detector. After the detector receives the signal, it calculates and determines the stress value of this point in the sample. When measuring the stress value of a certain point, it is sometimes necessary to rotate the stress gauge horizontally by an angle (φ angle) and then measure the stress gauge at this point to accurately measure the stress state of this point. At present, among the existing stress gauges, some stress gauges do not have the function of horizontally adjusting the rotation direction (φ angle) of the stress gauge, or have this function but need to be manually rotated before use. In this way, the efficiency, accuracy, and degree of automation cannot meet the current stress testing requirements. There is an urgent need for a stress gauge device that can electrically adjust the rotation direction (φ angle) of the stress gauge horizontally. Summary of the invention

[0003] In order to solve the above problems, the present invention discloses a stress meter device with φ angle rotation.

[0004] The specific technical solutions are as follows:

[0005] A stress meter device with φ angle rotation, comprising a mechanical arm, a φ angle rotation assembly, an XY axis translation assembly, a stress meter assembly, an infrared laser assembly, and a camera assembly;

[0006] The φ angle rotation assembly includes a support arm, a motor, a motor fixing seat, a synchronous pulley A, a synchronous pulley B, a synchronous belt, a worm, a bearing A, a bearing seat, a rotating shaft, a worm wheel, a bearing B, a bearing gland, a locking nut and a lifting ring;

[0007] The motor is fixed on the motor fixing seat, and the motor fixing seat is installed inside the support arm; the output shaft of the motor is connected to the synchronous pulley A, and the synchronous pulley A is connected to the synchronous pulley B through the synchronous belt, and the inner hole of the synchronous pulley B is fixedly connected to the worm, and the two ends of the worm are supported in the bearing seat through the bearing A; the outer side of the rotating shaft is fixedly installed with a worm wheel, and the worm wheel is meshed with the worm; the bottom of the rotating shaft is supported by the bearing B arranged in pairs, and the upper part of the bearing B is positioned by the bearing gland, and the tightness of the bearing B is adjusted by the locking nut; the bottom end of the rotating shaft is connected to the XY axis translation assembly, and the top of the rotating shaft is provided with a lifting ring;

[0008] The stress meter assembly includes a guide rail fixing plate, a fixing seat, an arc guide rail, a ray tube, a detector and an adjustment mechanism;

[0009] Above the guide rail fixing plate is connected to the bottom of the XY-axis translation assembly. One side of the guide rail fixing plate is connected to the front end of the arc guide rail. Four rollers are symmetrically installed on the end face of the fixed seat. The rollers are fixed by roller fixing rods, and the V-shaped surfaces of the rollers are in sliding fit with the V-shaped surfaces of the arc guide rail. Behind the fixed seat, a speed reducer and a motor are connected in sequence. A gear is installed on the output shaft of the speed reducer, and the gear meshes with the teeth on the arc guide rail. An adjustment mechanism is arranged below the speed reducer. The adjustment mechanism includes a left-right adjustment plate and an up-down adjustment plate. The left-right adjustment plate is slidably connected to the dovetail groove of the fixed seat through a dovetail groove. The up-down adjustment plate is slidably connected to the dovetail groove of the left-right adjustment plate through a dovetail groove. The lower end of the up-down adjustment plate is fixed to the X-ray tube fixing plate. An X-ray tube is installed in the X-ray tube fixing plate. A detector fixing plate is installed at the front end of the X-ray tube fixing plate. One detector is installed on each of the left and right sides of the detector fixing plate. A collimator is installed below the X-ray tube fixing plate, and a focusing pin is installed in the collimator. An infrared laser assembly is installed in front of and below the X-ray tube fixing plate, and a camera assembly is installed behind it;

[0010] The cable is fixed to the lifting ring. The rotation of the rotating shaft drives the lifting ring, the XY-axis translation assembly, the stress gauge assembly and the cable to rotate synchronously;

[0011] A stepped notch is arranged inside the support arm. After the pair of bearings B are sleeved on the rotating shaft, the lower bottom end abuts against the shoulder of the stepped notch. The upper top end of the bearing B forms a protrusion at the upper end of the stepped notch. The bearing gland is arranged conformally with the bearing B at the upper top end of the stepped notch, and the bearing gland is fixedly connected to the support arm;

[0012] The rotating shaft is in the shape of a stepped shaft, and a retaining ring is arranged in the middle of the rotating shaft;

[0013] The relative position between the vertex M in the stress gauge assembly and the axis center line of the rotating shaft is adjusted by the XY-axis translation assembly structure;

[0014] The adjustment mechanism drives the gear to mesh with the arc guide rail through the motor, drives the roller to slide along the arc guide rail, and makes the X-ray tube and the detector move around the center of the arc guide rail; The tip of the focusing pin coincides with the center of the arc guide rail by adjusting the sliding positions of the left-right adjustment plate and the up-down adjustment plate;

[0015] The advantages of the present invention are as follows: 1. It has the ability to electrically adjust the angle. The device can rotate the stress gauge assembly by plus or minus 90 degrees through the motor to meet the stress tests at various angles. The suspension ring and the cable rotate synchronously with the stress gauge assembly, ensuring the stability and reliability of the cable, avoiding the influence of cable folding and loosening on the use. Combined with the XY-axis translation assembly, the vertex M in the stress gauge assembly coincides with the axis center line of the rotating shaft, ensuring the accuracy of detection. 2. It has the ability to flexibly detect in all directions. The device is supported by a robotic arm, enabling 360-degree horizontal rotation, vertical lifting, and large-range height adjustment, and can be adapted to narrow spaces. The motor drives the gear to engage with the arc-shaped guide rail, driving the roller to slide, enabling the X-ray tube and the detector to accurately move around the center of the guide rail. Combined with the dovetail groove cooperation of the left and right adjustment plates and the up and down adjustment plates and the design of the focusing needle coinciding with the center of the circle, the detection accuracy is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the invention;

[0017] Figure 2 is a left view of the invention;

[0018] Figure 3 is a front view of the invention;

[0019] Figure 4 is a partial top view of the invention;

[0020] Figure 5 is a left sectional view of the invention;

[0021] Figure 6 is a top view of the φ-angle rotation assembly;

[0022] Figure 7 is a front sectional view of the φ-angle rotation assembly;

[0023] Figure 8 is a left view of the stress gauge assembly;

[0024] Figure 9 is a left sectional view of the stress gauge assembly;

[0025] Figure 10 is an enlarged view at vertex M;

[0026] Figure 11 is a schematic diagram of the rotation of the stress gauge assembly. DETAILED DESCRIPTION OF THE INVENTION

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] A stress meter device with φ-angle rotation includes a robotic arm 1, a φ-angle rotation assembly 2, an XY-axis translation assembly 3, a stress meter assembly 4, an infrared laser assembly 5, and a camera assembly 6.

[0029] The φ-angle rotation assembly 2 includes a support arm 201, a motor 202, a motor fixing seat 203, a synchronous pulley A 204, a synchronous pulley B 205, a synchronous belt 206, a worm 207, a bearing A 208, a bearing seat 209, a rotating shaft 210, a worm gear 211, a bearing B 212, a bearing gland 213, a locking nut 214, and a lifting ring 215.

[0030] The motor 202 is fixed on the motor fixing seat 203, and the motor fixing seat 203 is installed inside the support arm 201; the output shaft of the motor 202 is connected to the synchronous pulley A 204, the synchronous pulley A 204 is drivingly connected to the synchronous pulley B 205 through the synchronous belt 206, the inner hole of the synchronous pulley B 205 is fixedly connected to the worm 207, and both ends of the worm 207 are supported in the bearing seat 209 by the bearing A 208; a worm gear 211 is fixedly installed on the outer side of the rotating shaft 210, and the worm gear 211 meshes with the worm 207; the bottom of the rotating shaft 210 is supported by a pair of bearing B 212, the bearing B 212 is positioned by the bearing gland 213 above, and the tightness of the bearing B 212 is adjusted by the locking nut 214; the bottom end of the rotating shaft 210 is connected to the XY-axis translation assembly 3, and a lifting ring 215 is provided at the top end of the rotating shaft 210.

[0031] The stress meter assembly 4 includes a guide rail fixing plate 401, a fixing seat 402, an arc guide rail 405, a ray tube 412, a detector 414, and an adjustment mechanism.

[0032] Above the guide rail fixing plate 401 is connected to the bottom of the XY-axis translation assembly 3. One side of the guide rail fixing plate 401 is connected to the front end of the arc guide rail 405. Four rollers 404 are symmetrically installed on the end face of the fixing seat 402. The rollers 404 are fixed by roller fixing rods 403, and the V-shaped surfaces of the rollers 404 are in sliding fit with the V-shaped surface of the arc guide rail 405. Behind the fixing seat 402, a speed reducer 406 and a motor 407 are connected in sequence. The output shaft of the speed reducer 406 is installed with a gear 408, and the gear 408 meshes with the teeth on the arc guide rail 405. An adjusting mechanism is provided below the speed reducer 406. The adjusting mechanism includes a left-right adjusting plate 409 and an up-down adjusting plate 410. The left-right adjusting plate 409 is slidably connected to the dovetail groove of the fixing seat 402 through a dovetail groove. The up-down adjusting plate 410 is slidably connected to the dovetail groove of the left-right adjusting plate 409 through a dovetail groove. The lower end of the up-down adjusting plate 410 is fixed with a ray tube fixing plate 411. A ray tube 412 is installed in the ray tube fixing plate 411. A detector fixing plate 413 is installed at the front end of the ray tube fixing plate 411. One detector 414 is installed on each of the left and right sides of the detector fixing plate 413. A collimator 415 is installed below the ray tube fixing plate 411, and a focusing pin 416 is installed in the collimator 415. An infrared laser assembly 5 is installed in front of and below the ray tube fixing plate 411, and a camera assembly 6 is installed behind it;

[0033] The cable 7 is fixed to the lifting ring 215. The rotation of the rotating shaft 210 drives the lifting ring 215, the XY-axis translation assembly 3, the stress gauge assembly 4, and the cable 7 to rotate synchronously;

[0034] A stepped notch is provided inside the support arm 201. After the pair of bearings B212 are sleeved on the rotating shaft 210, the lower bottom end abuts against the shoulder of the stepped notch, and the upper top end of the bearing B212 forms a protrusion at the upper end of the stepped notch. The bearing gland 213 is arranged conformally with the bearing B212 at the upper top end of the stepped notch, and the bearing gland 213 is fixedly connected to the support arm 201;

[0035] The rotating shaft 210 is in the shape of a stepped shaft, and a retaining ring 216 is provided in the middle of the rotating shaft 210;

[0036] The relative position of the vertex M in the stress gauge assembly 4 and the axis center line of the rotating shaft 210 is adjusted by the structure of the XY-axis translation assembly 3;

[0037] The adjusting mechanism drives the gear 408 to mesh with the arc guide rail 405 through the motor 407, drives the roller 404 to slide along the arc guide rail 405, and enables the ray tube 412 and the detector 414 to move around the center of the arc guide rail 405. The tip of the focusing pin 416 coincides with the center of the arc guide rail 405 by adjusting the sliding positions of the left-right adjusting plate 409 and the up-down adjusting plate 410;

[0038] The working principle of the present invention is as follows:

[0039] 1. First, adjust the XY-axis translation assembly 3 to achieve X-axis and Y-axis adjustment, and rely on special adjustment equipment to ensure that the vertex M of the stress gauge assembly 4 coincides with the axis center line of the rotating shaft 210.

[0040] 2. Operate the left and right adjustment plates 409 and the up and down adjustment plates 410, slide along the dovetail groove to adjust the up, down, left, and right positions of the X-ray tube fixing plate 411, and rely on special adjustment equipment to accurately align the tip of the focusing needle 416 with the center of the arc-shaped guide rail 405 to ensure the focusing accuracy of the X-ray beam and the detector 414.

[0041] 3. Move the stress gauge assembly 4 to the vicinity of the area to be measured through the robotic arm 1, slowly lower the stress gauge assembly 4 above the sample, so that the light spot emitted by the infrared laser assembly 5 hits the pre-calibrated point on the sample, and then observe the point presented by the camera assembly 6 on the display. After the point on the sample, the light spot emitted by the infrared laser assembly 5, and the point displayed by the camera assembly 6 on the display completely coincide, determine the detection height, and turn on the ray to start detection.

[0042] 4. Start the motor 407, drive the gear 408 to rotate through the speed reducer 406. The gear 408 meshes with the teeth on the arc-shaped guide rail 405, drives the roller 404 to slide along the V-shaped surface of the arc-shaped guide rail 405, so that the X-ray tube 412 and the detector 414 as a whole make a circular motion around the center of the guide rail to cover different detection angles. During the movement, at the surface A of the object to be measured (such as Figure 11 ), the X-ray tube 412 continuously emits X-rays, and the detector 414 receives the reflected signal and transmits it to the external processing system in real time. The stress distribution is calculated by analyzing the diffraction angle offset. If it is necessary to adjust the detection range, the motor 407 can be paused, the angle of the robotic arm can be adjusted, and the detection can be continued after repositioning.

[0043] 5. When it is necessary to rotate by an angle φ for stress detection, the motor 202 in the angle φ rotation assembly 2 drives the synchronous pulley A204, the synchronous belt 206, and the synchronous pulley B205 to drive the worm 207. The worm 207 meshes with the worm gear 211 to drive the rotating shaft 210 to rotate, driving the XY-axis translation assembly 3 and the stress gauge assembly 4 to rotate plus or minus 90 degrees; at the same time, the cable 7 is fixed to the lifting ring 215 at the top of the rotating shaft 210 and rotates followingly to avoid torsion or loosening. Combining the high transmission ratio of the worm gear and the closed-loop feedback of the servo motor, digital precise control of the angle is realized, and finally, the detection efficiency and reliability are improved through electric drive, precise adjustment, and cable synchronous management.

Claims

1. A stress gauge device with φ-angle rotation, characterized in that: It includes a robotic arm (1), a φ-angle rotation assembly (2), an XY-axis translation assembly (3), a stress gauge assembly (4), an infrared laser assembly (5), and a camera assembly (6); The φ-angle rotation assembly (2) includes a support arm (201), a motor (202), a motor fixing seat (203), a synchronous pulley A (204), a synchronous pulley B (205), a synchronous belt (206), a worm (207), a bearing A (208), a bearing seat (209), a rotating shaft (210), a worm gear (211), a bearing B (212), a bearing gland (213), a lock nut (214), and a lifting ring (215); The motor (202) is fixed on the motor fixing seat (203), and the motor fixing seat (203) is installed inside the support arm (201); the output shaft of the motor (202) is connected to the synchronous pulley A (204), the synchronous pulley A (204) is in transmission connection with the synchronous pulley B (205) through the synchronous belt (206), the inner hole of the synchronous pulley B (205) is fixedly connected to the worm (207), and the end of the worm (207) is supported in the bearing seat (209) through the bearing A (208); the worm gear (211) is fixedly installed on the outer side of the rotating shaft (210), and the worm gear (211) meshes with the worm (207); the bottom of the rotating shaft (210) is supported by a pair of bearings B (212), the bearings B (212) are positioned by the bearing gland (213) above, and the tightness of the bearings B (212) is adjusted by the lock nut (214); the bottom end of the rotating shaft (210) is connected to the XY-axis translation assembly (3), and a lifting ring (215) is provided at the top end of the rotating shaft (210); The stress gauge assembly (4) includes a guide rail fixing plate (401), a fixing seat (402), an arc guide rail (405), a ray tube (412), a detector (414), and an adjusting mechanism; Above the guide rail fixing plate (401) is connected to the bottom of the XY-axis translation assembly (3), and one side of the guide rail fixing plate (401) is connected to the front end of the arc guide rail (405). Four rollers (404) are symmetrically installed on the end face of the fixed seat (402). The rollers (404) are fixed by roller fixing rods (403), and the V-shaped surfaces of the rollers (404) are in sliding fit with the V-shaped surface of the arc guide rail (405). Behind the fixed seat (402) are sequentially connected to a speed reducer (406) and a motor (407). A gear (408) is installed on the output shaft of the speed reducer (406), and the gear (408) meshes with the teeth on the arc guide rail (405). An adjusting mechanism is arranged below the speed reducer (406). The adjusting mechanism includes a left-right adjusting plate (409) and an up-down adjusting plate (410). The left-right adjusting plate (409) is slidably connected to the dovetail groove of the fixed seat (402) through a dovetail groove. The up-down adjusting plate (410) is slidably connected to the dovetail groove of the left-right adjusting plate (409) through a dovetail groove. The lower end of the up-down adjusting plate (410) is fixed to a ray tube fixing plate (411). A ray tube (412) is installed in the ray tube fixing plate (411). A detector fixing plate (413) is installed at the front end of the ray tube fixing plate (411). One detector (414) is installed on each of the left and right sides of the detector fixing plate (413). A collimator (415) is installed below the ray tube fixing plate (411), and a focusing pin (416) is installed in the collimator (415). An infrared laser assembly (5) is installed in front of and below the ray tube fixing plate (411), and a camera assembly (6) is installed behind it.

2. The stress gauge device with φ-angle rotation according to claim 1, characterized in that: The cable (7) is fixed to the lifting ring (215). The rotation of the rotating shaft (210) drives the lifting ring (215), the XY-axis translation assembly (3), the stress gauge assembly (4), and the cable (7) to rotate synchronously.

3. The stress meter device with φ-angle rotation according to claim 1, characterized in that: A stepped notch is provided inside the support arm (201). After a pair of bearings B (212) are sleeved on the rotating shaft (210), the lower bottom end abuts against the shoulder of the stepped notch, and the upper top end of the bearing B (212) protrudes at the upper end of the stepped notch. A bearing gland (213) is arranged conforming to the bearing B (212) at the upper top end of the stepped notch, and the bearing gland (213) is fixedly connected to the support arm (201).

4. The stress meter device with φ-angle rotation according to claim 1, characterized in that: The rotating shaft (210) is in the shape of a stepped shaft, and a retaining ring (216) is provided in the middle of the rotating shaft (210).

5. The stress gauge device with φ-angle rotation according to claim 1, characterized in that: The relative position between the vertex M in the stress gauge assembly (4) and the axis center line of the rotating shaft (210) is adjusted by the structure of the XY-axis translation assembly (3).

6. The stress meter device with φ-angle rotation according to claim 1, characterized in that: The adjusting mechanism drives the gear (408) to mesh with the arc guide rail (405) through the motor (407) and the speed reducer (406), driving the rollers (404) to slide along the arc guide rail (405), so that the ray tube (412) and the detector (414) move around the center of the arc guide rail (405). The tip of the focusing pin (416) coincides with the center of the arc guide rail (405) by adjusting the sliding positions of the left-right adjusting plate (409) and the up-down adjusting plate (410).

7. A method for using a stress meter device with φ-angle rotation, characterized in that, Including the following steps: Step S1: Adjust the XY-axis translation assembly (3) to make the vertex M in the stress gauge assembly (4) coincide with the axis center line of the rotating shaft (210) of the φ-angle rotation assembly (2); Step S2: Operate the left and right adjustment plates (409) and the up and down adjustment plates (410) of the stress gauge assembly (4), and slide along the dovetail groove to adjust the position of the X-ray tube fixing plate (411) so that the tip of the focusing needle (416) coincides with the center of the arc-shaped guide rail (405); Step S3: Move the stress gauge assembly (4) to the area to be measured through the robotic arm (1), project a light spot onto the surface of the object to be measured by the infrared laser assembly (5), and observe the position of the light spot through the camera assembly (6), and adjust the detection height until the light spot coincides with the preset calibration point; Step S4: Start the motor (407) of the stress gauge assembly (4), drive the gear (408) to engage with the arc-shaped guide rail (405), drive the roller (404) to slide along the arc-shaped guide rail (405), and make the X-ray tube (412) and the detector (414) move around the center of the circle to perform X-ray stress detection; Step S5: When it is necessary to adjust the φ angle, start the motor (202) of the φ-angle rotation assembly (2), drive the worm (207) to engage with the worm gear (211) through the synchronous belt (206), drive the rotating shaft (210) to drive the stress gauge assembly (4) to rotate plus or minus 90 degrees, and at the same time the cable (7) rotates synchronously with the lifting ring (215). After completing the φ-angle adjustment, continue to perform the detection.

8. The method of using the stress gauge device with φ-angle rotation according to claim 7, characterized in that: Control the robotic arm (1) to vertically lift and lower the stress gauge assembly (4) until the light spot of the infrared laser assembly (5), the calibration point on the surface of the object to be measured, and the image point displayed by the camera assembly (6) coincide.

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