Automatic flaw detection device for shaft workpieces

Abstract

The automatic flaw detection device comprises a base and a controller, a rotary bearing module is installed on the right side of the base, and a three-axis adjusting module for adjusting the position of a flaw detection probe is installed on the left side of the base; the laser sensor is used for scanning the outline of the shaft workpiece so as to control the three-axis adjusting module to adjust the position of the flaw detection probe; the controlled end of the rotary bearing module and the controlled end of the three-axis adjusting module are connected with the output end of the controller. The output end of the laser sensor is connected with the input end of the controller. The shaft workpieces are supported by two groups of oppositely arranged bearing rollers in the rotary bearing module, the feeding and discharging efficiency is improved, it is guaranteed that the shaft workpieces can be automatically centered when being borne by the bearing rollers, meanwhile, a flaw detection probe can be adjusted in time according to the surface size change of the workpieces, and the detection accuracy is improved. The accuracy of flaw detection on the surface and the center part of the shaft workpiece is ensured, and the flaw detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece flaw detection devices, and particularly relates to an automatic flaw detection device for shaft workpieces. Background Art

[0002] Shaft parts are common and important parts in the machinery industry, mainly used to support transmission components, transmit torque and bear loads. The quality assurance of such parts is the key to the quality of mechanical products. Surface inspection is an important link in the quality inspection of shaft parts. In the prior art, the surface non-destructive inspection of shaft workpieces is usually carried out by manually holding a flaw detection device, resulting in low detection efficiency. There is also a part of the shaft workpiece flaw detection device that is modified based on a horizontal lathe. However, due to the structural limitations of the horizontal lathe, the loading and unloading processes of shaft workpieces are time-consuming and inconvenient to operate. Moreover, during the clamping process, the shaft workpiece needs to be centered and adjusted, which affects the flaw detection efficiency.

[0003] In addition, since some shaft workpieces are arranged in a stepped shape, with multiple steps of varying diameters on the shaft, when flaw detecting such workpieces, the position of the probe cannot be adjusted in a timely manner according to the changes in the steps of the shaft workpiece, resulting in an impact on the flaw detection accuracy of the probe. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic flaw detection device for shaft workpieces, which can realize rapid loading and unloading during the detection of shaft workpieces, ensure the automatic centering of the shaft workpiece during loading and clamping, and improve the flaw detection efficiency.

[0005] To solve the above technical problems, the following technical solutions are adopted in the present invention.

[0006] An automatic flaw detection device for shaft workpieces includes a base and a controller. A rotary support module for supporting the shaft workpiece and driving the shaft workpiece to rotate is installed on the right side of the base, and a three-axis adjustment module for adjusting the position of the flaw detection probe is installed on the left side of the base; it also includes a laser sensor for scanning the contour of the shaft workpiece to control the three-axis adjustment module to adjust the position of the flaw detection probe; the controlled ends of the rotary support module and the three-axis adjustment module are respectively connected to the output end of the controller, and the output end of the laser sensor is connected to the input end of the controller.

[0007] For the above automatic flaw detection device for shaft workpieces, the rotary support module includes a slide rail arranged on the base. One end of the slide rail is provided with a fixed bracket, and a movable bracket opposite to the fixed bracket is slidably arranged on the slide rail; two support rollers for supporting the shaft workpiece are respectively arranged on the fixed bracket and the movable bracket; one of the support rollers located on the fixed bracket is connected to a rotary motor.

[0008] In the above-mentioned automatic flaw detection device for shaft workpieces, a moving motor is provided on one side of the movable bracket away from the fixed bracket. The output shaft of the moving motor is connected to a helical gear, and a helical rack meshing with the helical gear is provided on the slide rail. The helical rack is arranged along the length direction of the slide rail.

[0009] In the above-mentioned automatic flaw detection device for shaft workpieces, a workpiece shaft end limiting plate for limiting one end of the shaft workpiece is provided on one side of the fixed bracket away from the end face of the shaft workpiece. On one side of the workpiece shaft end limiting plate in contact with the end face of the shaft workpiece, universal balls are evenly arranged to ensure the rotation of the shaft workpiece.

[0010] In the above-mentioned automatic flaw detection device for shaft workpieces, the three-axis adjustment module includes an X-axis guide rail, which is arranged parallel to the slide rail. An X-axis slider is slidably arranged on the X-axis guide rail, and an X-axis slider driving motor for driving the X-axis slider to move on the X-axis guide rail is further provided on the X-axis slider; a Y-axis guide rail is provided on the X-axis slider, a Y-axis slider is slidably arranged on the Y-axis guide rail, and a Y-axis slider driving motor for driving the Y-axis slider to move on the Y-axis guide rail is installed on the Y-axis slider; a Z-axis guide sleeve is slidably arranged on the Y-axis slider, a Z-axis guide rail is slidably arranged on the Z-axis guide sleeve, and a Z-axis guide rail driving motor for driving the Z-axis guide rail to move along the Z-axis guide sleeve is further provided on the Z-axis guide sleeve; the flaw detection probe is installed at one end of the Z-axis guide rail facing the shaft workpiece through a probe bracket, and the flaw detection probe is arranged facing the central axis of the shaft workpiece.

[0011] In the above-mentioned automatic flaw detection device for shaft workpieces, the laser sensor is located below the shaft workpiece, and the laser sensor is slidably connected to the rotation and support module.

[0012] In the above-mentioned automatic flaw detection device for shaft workpieces, the laser sensor is arranged on one side of the three-axis adjustment module where the flaw detection probe is installed, and the laser sensor is arranged facing the shaft workpiece.

[0013] In the above-mentioned automatic flaw detection device for shaft workpieces, it further includes an operation display screen for displaying the contour of the shaft workpiece scanned by the laser sensor. The operation display screen is in two-way communication connection with the controller.

[0014] Due to the adoption of the above technical solutions, the following technical progress is achieved by the present invention.

[0015] The present invention provides an automatic flaw detection device for shaft workpieces. The shaft workpiece is supported by two sets of relatively arranged supporting rollers in the rotation and support module. The shaft workpiece can be directly placed on the supporting rollers, eliminating the clamping operation and improving the loading and unloading efficiency. The number of supporting rollers in each group is two, ensuring that the shaft workpiece can be automatically centered when supported by the supporting rollers without additional adjustment and correction.

[0016] By setting up a laser sensor to detect the surface dimensions of shaft workpieces, the surface of the workpiece can be detected as a whole in advance, and then the detection plane is set, so that the flaw detection probe adjusts its position according to the set detection plane. It is also possible to move the laser sensor together with the flaw detection probe, detect the surface dimensions of the shaft workpiece while detecting flaws, and timely adjust the position of the flaw detection probe, ensuring the accuracy of flaw detection on the surface and the core of the shaft workpiece and improving the efficiency of flaw detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of Embodiment 1; Figure 2 It is a top view of Embodiment 1; Figure 3 It is a schematic structural diagram of the rotary support module; Figure 4 It is for Figure 3 a partial enlarged schematic view at B in Figure 5 It is for Figure 3 a partial enlarged schematic view at A in Figure 6 It is a schematic structural diagram of the three-axis adjustment module; Figure 7 It is a schematic structural diagram of Embodiment 2; Figure 8 It is a side view of Embodiment 2.

[0018] Wherein: 1. Base, 2. Rotary support module, 3. Three-axis adjustment module, 4. Laser sensor, 5. Shaft workpiece, 6. Slide plate, 7. Mounting bracket, 8. Driving motor, 9. Straight gear, 10. Straight rack; 200. Slide rail, 201. Fixed bracket, 202. Support roller, 203. Rotary motor, 204. Movable bracket, 205. Moving motor, 206. First reducer, 207. Second reducer, 208. Workpiece shaft end limit plate, 209. Universal ball, 210. Helical gear, 211. Helical rack; 300. X-axis guide rail, 301. X-axis slider, 302. X-axis slider driving motor, 303. Y-axis guide rail, 304. Y-axis slider, 305. Y-axis slider driving motor, 306. Z-axis bushing, 307. Z-axis guide rail, 308. Z-axis guide rail driving motor, 309. Flaw detection probe. SPECIFIC EMBODIMENTS

[0019] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments. Embodiment

[0020] An automatic flaw detection device for shaft workpieces, as shown in Figures 1 to 6As shown in the figure, it includes a base 1, a controller, and an operation display screen. On the right side of the base 1, a rotary support module 2 is installed for supporting a shaft workpiece 5 and driving the shaft workpiece 5 to rotate. On the left side of the base 1, a three-axis adjustment module 3 is installed for adjusting the position of the flaw detection probe 309. It also includes a laser sensor 4, which is used to scan the contour of the shaft workpiece 5 so as to control the three-axis adjustment module 3 to adjust the position of the flaw detection probe 309, thereby performing flaw detection on the surface of the shaft workpiece 5.

[0021] The controlled ends of the rotary support module 2 and the three-axis adjustment module 3 are respectively connected to the output end of the controller, the output end of the laser sensor 4 is connected to the input end of the controller, and the operation display screen is in bidirectional communication connection with the controller.

[0022] The rotary support module 2 includes a slide rail 200 provided on the base 1. One end of the slide rail 200 is provided with a fixed bracket 201, and a movable bracket 204 opposite to the fixed bracket 201 is slidably arranged on the slide rail 200. Two support rollers 202 are respectively provided on the fixed bracket 201 and the movable bracket 204 for supporting the shaft workpiece 5.

[0023] One of the support rollers 202 located on the fixed bracket 201 is connected to a rotary motor 203. A second speed reducer 207 is also provided between the rotary motor 203 and the support roller 202. The support roller 202 is driven to rotate by the rotary motor 230, and then the shaft workpiece 5 is driven to rotate so as to perform flaw detection on the annular surface of the shaft workpiece 5 through the flaw detection probe 309.

[0024] On one side of the movable bracket 204 away from the fixed bracket 201, a moving motor 205 is provided. The output shaft of the moving motor 205 is connected to a helical gear 210. A first speed reducer 206 is also provided between the moving motor 205 and the helical gear 210. A helical rack 211 meshing with the helical gear 210 is provided on the slide rail 200, and the helical rack 211 is arranged along the length direction of the slide rail 200.

[0025] In this embodiment, the movable bracket 204 is driven to move through the cooperation of the helical gear 210 and the helical rack 211 to support shaft workpieces 5 of different lengths. Other transmission methods such as screw drive can also be selected to realize the movement of the movable bracket 204 along the slide rail 200.

[0026] On one side of the fixed bracket 201 away from the end face of the shaft workpiece 5, a workpiece shaft end limiting plate 208 for limiting one end of the shaft workpiece 5 is provided. On one side of the workpiece shaft end limiting plate 208 in contact with the end face of the shaft workpiece 5, uniformly arranged universal balls 209 are provided, which can limit the shaft workpiece 5 without affecting the rotation of the shaft workpiece 5.

[0027] One end of the workpiece shaft end limit plate 208 in contact with the end face of the shaft workpiece 5 is slightly inclined inward, so that the end face of the shaft workpiece can better lean on the workpiece shaft end limit plate, ensuring that the shaft workpiece will not move during rotation.

[0028] The laser sensor 4 is located below the shaft workpiece 5, and the laser sensor 4 is slidably connected to the rotating support module 2.

[0029] Specifically, a sliding plate 6 is slidably arranged on the slide rail 200 between the fixed bracket 201 and the movable bracket 204. An installation bracket 7 is arranged in the middle of the sliding plate 6, and the laser sensor 4 is arranged on the installation bracket 7.

[0030] A straight rack 10 is arranged on the slide rail 200. A straight gear 9 meshing with the straight rack 10 is arranged on one side of the sliding plate 6. The straight gear 9 is connected to a drive motor 8 arranged on the sliding plate 6. The laser sensor 4 is driven to slide between the fixed bracket 201 and the movable bracket 204 by the cooperation of the straight gear and the straight rack, scan the supported shaft workpiece 5, obtain the surface contour of the shaft workpiece, and display it on the operation display screen.

[0031] During the flaw detection process, by selecting the surface to be detected on the operation display screen, and then adjusting the position of the flaw detection probe according to the position of the detection surface to perform flaw detection on the detection surface and the core of the shaft workpiece corresponding to the detection surface.

[0032] The three-axis adjustment module 3 includes an X-axis guide rail 300, which is arranged in parallel with the slide rail 200. An X-axis slider 301 is slidably arranged on the X-axis guide rail 300. An X-axis slider drive motor 302 for driving the X-axis slider 301 to move on the X-axis guide rail 300 is also arranged on the X-axis slider 301.

[0033] A Y-axis guide rail 303 is arranged on the X-axis slider 301. A Y-axis slider 304 is slidably arranged on the Y-axis guide rail 303. A Y-axis slider drive motor 305 for driving the Y-axis slider 304 to move on the Y-axis guide rail 303 is installed on the Y-axis slider 304.

[0034] A Z-axis guide sleeve 306 is slidably arranged on the Y-axis slider 304. A Z-axis guide rail 307 is slidably arranged on the Z-axis guide sleeve 306. A Z-axis guide rail drive motor 308 for driving the Z-axis guide rail 307 to move along the Z-axis guide sleeve 306 is also arranged on the Z-axis guide sleeve 306.

[0035] The flaw detection probe 309 is installed at one end of the Z-axis guide rail 307 facing the shaft workpiece 5 through a probe bracket, and is used to adjust the distance between the flaw detection probe 309 and the shaft workpiece as it moves along with the Z-axis guide rail 307.

[0036] The flaw detection probe 309 is arranged towards the central axis of the shaft workpiece 5. In this embodiment, the flaw detection probe 309 is arranged at a position 90° on the side of the axial workpiece.

[0037] In other embodiments, the flaw detection probe 309 can also be arranged at multiple angular positions such as above the shaft workpiece and 45° on the side. Specifically, the angular position of the flaw detection probe 309 is adjusted by adjusting the angle of the probe support. For example, a probe support with different inclined angle slopes is selected to install the flaw detection probe, and then the distance between the flaw detection probe and the shaft workpiece is adjusted by the three-axis adjustment module.

[0038] The operation steps of the present invention are as follows: First, adjust the position of the movable bracket 204 according to the length of the shaft workpiece, then place the shaft workpiece 5 between the fixed bracket 201 and the movable bracket 204, and support the shaft workpiece by two supporting rollers 202, and ensure that the axis of the shaft workpiece is centered.

[0039] Next, start the rotating motor 203 to drive one of the supporting rollers 202 to rotate by the rotating motor, and drive the shaft workpiece to rotate by using the frictional force between the supporting roller and the shaft workpiece.

[0040] Then, first move the laser sensor 4 to the side close to the fixed bracket 201, and then drive the laser sensor 4 to move from the fixed bracket 201 to the movable bracket 204 by the driving motor, so as to measure the contour dimensions of the shaft workpiece.

[0041] After that, the three-axis adjustment module 3 adjusts the position of the flaw detection probe 309 according to the contour dimensions of the flaw detection surface measured by the laser sensor 4 to perform flaw detection on the surface of the shaft workpiece.

[0042] Specifically, the laser sensor 4 sends the measurement data to the controller and transmits it to the operation display screen. Then, the workpiece surface to be flaw detected can be selected on the operation display screen. The three-axis adjustment module 3 adjusts the position of the flaw detection probe 309 according to the contour dimensions of the selected flaw detection surface, and performs flaw detection on the selected surface and the corresponding core part of the shaft workpiece. Embodiment

[0043] On the basis of Embodiment 1, as Figures 7 to 8 shown, the laser sensor 4 is installed on the three-axis adjustment module 3 close to the shaft workpiece 5, rather than being slidably arranged on the slide rail 200.

[0044] Specifically, the laser sensor 4 is installed on one side of the Z-axis guide rail 307 close to the flaw detection probe through a connecting bracket. In this way, when the three-axis adjustment module 3 adjusts the position of the flaw detection probe 309, the laser sensor 4 can timely detect the surface size of the shaft workpiece following the movement of the flaw detection probe 309, so as to timely adjust the distance between the flaw detection probe and the shaft workpiece.

[0045] The present invention provides an automatic flaw detection device for shaft workpieces. The shaft workpiece is supported by two sets of relatively arranged supporting rollers in the rotation and support module. The shaft workpiece can be directly placed on the supporting rollers, eliminating the clamping operation and improving the loading and unloading efficiency. The number of supporting rollers in each group is two, ensuring that the shaft workpiece can be automatically centered when supported by the supporting rollers without additional adjustment and correction.

[0046] By setting a laser sensor to detect the surface size of the shaft workpiece, the surface of the workpiece can be pre-detected as a whole, and then the detection plane can be set to enable the flaw detection probe to adjust its position according to the set detection plane. It is also possible to make the laser sensor move together with the flaw detection probe to detect the surface size of the shaft workpiece while flaw detecting and timely adjust the position of the flaw detection probe, ensuring the accuracy of flaw detection on the surface and the core of the shaft workpiece and improving the flaw detection efficiency.

Claims

1. An automatic flaw detection device for shaft workpieces, characterized in that: It includes a base (1) and a controller. On the right side of the base (1), a rotary support module (2) is installed for supporting a shaft workpiece (5) and driving the shaft workpiece (5) to rotate. On the left side of the base (1), a three-axis adjustment module (3) is installed for adjusting the position of the flaw detection probe (309). It also includes a laser sensor (4) for scanning the contour of the shaft workpiece (5) so as to control the three-axis adjustment module (3) to adjust the position of the flaw detection probe (309). The controlled ends of the rotary support module (2) and the three-axis adjustment module (3) are respectively connected to the output end of the controller, and the output end of the laser sensor (4) is connected to the input end of the controller. It further includes an operation display screen for displaying the contour of the shaft workpiece scanned by the laser sensor (4), and the operation display screen is in two-way communication connection with the controller.

2. The automatic flaw detection device for a shaft workpiece according to claim 1, characterized in that: The rotary support module (2) includes a slide rail (200) provided on the base (1). One end of the slide rail (200) is provided with a fixed bracket (201), and a movable bracket (204) opposite to the fixed bracket (201) is slidably arranged on the slide rail (200). Two support rollers (202) for supporting the shaft workpiece (5) are respectively provided on the fixed bracket (201) and the movable bracket (204). One of the support rollers (202) located on the fixed bracket (201) is connected to a rotary motor (203).

3. The automatic flaw detection device for shaft workpieces according to claim 2, characterized in that: On one side of the movable bracket (204) away from the fixed bracket (201), a moving motor (205) is provided. The output shaft of the moving motor (205) is connected to a helical gear (210). On the slide rail (200), a helical rack (211) meshing with the helical gear (210) is provided, and the helical rack (211) is arranged along the length direction of the slide rail (200).

4. An automatic flaw detection device for shaft workpieces according to claim 2, characterized in that: On one side of the fixed bracket (201) away from the end face of the shaft workpiece (5), a workpiece shaft end limit plate (208) for limiting one end of the shaft workpiece (5) is provided. On one side of the workpiece shaft end limit plate (208) in contact with the end face of the shaft workpiece (5), universal balls (209) are evenly arranged to ensure the rotation of the shaft workpiece (5).

5. The automatic flaw detection device for shaft workpieces according to claim 2, characterized in that: The three-axis adjustment module (3) includes an X-axis guide rail (300), the X-axis guide rail (300) is arranged parallel to the slide rail (200), an X-axis slider (301) is slidably arranged on the X-axis guide rail (300), and an X-axis slider driving motor (302) for driving the X-axis slider (301) to move on the X-axis guide rail (300) is further arranged on the X-axis slider (301); a Y-axis guide rail (303) is arranged on the X-axis slider (301), a Y-axis slider (304) is slidably arranged on the Y-axis guide rail (303), and a Y-axis slider driving motor (305) for driving the Y-axis slider (304) to move on the Y-axis guide rail (303) is installed on the Y-axis slider (304); a Z-axis guide sleeve (306) is slidably arranged on the Y-axis slider (304), a Z-axis guide rail (307) is slidably arranged on the Z-axis guide sleeve (306), and a Z-axis guide rail driving motor (308) for driving the Z-axis guide rail (307) to move along the Z-axis guide sleeve (306) is further arranged on the Z-axis guide sleeve (306); the flaw detection probe (309) is installed at one end of the Z-axis guide rail (307) facing the shaft workpiece (5) through a probe bracket, and the flaw detection probe (309) is arranged facing the central axis of the shaft workpiece (5).

6. The automatic flaw detection device for shaft workpieces according to claim 1, characterized in that: The laser sensor (4) is located below the shaft workpiece (5), and the laser sensor (4) is slidably connected to the rotary support module (2).

7. An automatic flaw detection device for shaft workpieces according to claim 1, characterized in that: The laser sensor (4) is arranged on one side of the three-axis adjustment module (3) where the flaw detection probe (309) is installed, and the laser sensor (4) is arranged facing the shaft workpiece (5).

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