A surface defect detection device for a forged member

Abstract

The present application belongs to the technical field of defect detection, and particularly relates to a surface defect detection device for a forged part, which comprises a base, a controller connected to the sidewall of the base, a moving assembly arranged in the base, a crankshaft clamped by a clamping assembly at the moving end of the moving assembly and the surface of the base, and a mounting frame fixedly connected to the upper sidewall of the base. When the surface defect of the crankshaft is detected, the surface of the journal, the crank arm and the balance block is synchronously detected in different regions, and the device is suitable for different models of crankshafts. The detection blind area caused by the complex structure can be greatly eliminated, and the defects such as micro-cracks and scratches of each key part are ensured to be not missed. Meanwhile, the detection efficiency can be significantly improved, and the time loss of single-region successive detection can be avoided. Furthermore, the debugging period of the tool clamp and parameters during the detection of different models of crankshafts can be reduced, the equipment investment and production cost can be reduced, and the universality and flexibility of the detection system can be enhanced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of defect detection, and particularly relates to a surface defect detection device for a forged piece. BACKGROUND

[0002] In the fields of mechanical manufacturing, automobile parts and aerospace equipment production, forged pieces are widely used due to excellent mechanical properties, but cracks, folds, pits, scratches and other surface defects are easily generated in the processing process such as high-temperature forging, die wear and uneven cooling, which can seriously reduce the structural strength and service reliability of the forged pieces, and even cause safety accidents; therefore, defect detection is needed after the forged pieces are produced.

[0003] As a typical multi-throw special-shaped forged piece, the crankshaft has complex structures such as multiple journals, crank arms and balance blocks, and the surface defect detection thereof faces great difficulties, the irregular curved surface and the shielding between the journals easily lead to imaging blind areas of traditional optical detection equipment, thereby causing missed detection of micro-cracks, scratches and other defects, the high positioning accuracy requirement of the crankshaft affects the defect positioning accuracy, the poor universality of the equipment requires re-adjustment of parameters and tooling when different models of crankshafts are replaced, and the probe angle and position need to be frequently adjusted during the detection process, thereby increasing the detection cost.

[0004] Therefore, the surface defect detection device for the forged piece is provided to solve the above problems. SUMMARY

[0005] The application aims to provide a surface defect detection device for a forged piece.

[0006] To achieve the above purpose, the application adopts the following technical scheme: a surface defect detection device for a forged piece, comprising a base, a controller connected to the side wall of the base, a moving assembly arranged in the base, a crankshaft clamped by a clamping assembly at the moving end of the moving assembly and the surface of the base, and a mounting frame fixedly connected to the upper side wall of the base, further comprising:

[0007] An adjusting assembly is arranged at the top of the mounting frame, an output end of the adjusting assembly is connected with a detection assembly, and the detection assembly is located above the crankshaft.

[0008] In the above-mentioned forging surface defect detection device, the moving assembly comprises a moving cavity opened in the inner wall of the base, the inner wall of the moving cavity is rotationally connected with a threaded rod, the outer wall of the base is fixedly connected with a driving motor, the output end of the driving motor penetrates through the base and is fixedly connected with one end of the threaded rod, the rod wall of the threaded rod is threadedly sleeved with a threaded cylinder, the upper side wall of the threaded cylinder is fixedly connected with a moving rod, the upper side wall of the moving cavity is opened with a moving opening matched with the moving rod, the upper end of the moving rod penetrates through the moving opening and extends out of the base, the upper end of the moving rod is fixedly connected with a moving seat, and the moving seat is connected with one side clamping assembly.

[0009] In the above-mentioned forging surface defect detection device, the two clamping assemblies each comprise a vertical rod, the upper side wall of the moving seat is fixedly connected with the lower end of one of the vertical rods, the lower end of the other vertical rod is fixedly connected with the upper side wall of the base, the upper ends of the two vertical rods are each fixedly connected with a lower arc-shaped clamping plate, the rod wall of the vertical rod is fixedly connected with a support frame, the support frame is a U-shaped structure, the upper side wall of the support frame is fixedly connected with a clamping electric push rod, the output end of the clamping electric push rod penetrates through the support frame and is fixedly connected with an upper arc-shaped clamping plate through a pressure sensor.

[0010] In the above-mentioned forging surface defect detection device, the adjusting assembly comprises an adjusting electric push rod fixedly connected with the upper side wall of the mounting bracket, the output end of the adjusting electric push rod penetrates through the mounting bracket and is fixedly connected with a first lead screw linear module, the first lead screw linear module is horizontally arranged, the moving end of the first lead screw linear module is fixedly connected with a second lead screw linear module, the second lead screw linear module is vertically arranged, and the moving end of the second lead screw linear module is fixedly connected with an adjusting plate.

[0011] In the above-mentioned forging surface defect detection device, the detection assembly comprises a detection ring, the detection ring is of an open structure, the outer wall of the detection ring is fixedly sleeved with an annular slide rail, the annular slide rail is slidably provided with a slide rail ring, the cross section of the slide rail ring is a reverse T-shaped structure, one end of the slide rail ring extending out of the annular slide rail is fixedly connected with an arc-shaped connecting plate, the lower end of the adjusting plate is connected with the side wall of the arc-shaped connecting plate, the side wall of the slide rail ring is connected with a plurality of micro driving motors through a support, the micro driving motors are annularly arranged on the side wall of the slide rail ring, the output end of the micro driving motor is fixedly connected with a friction roller, the inner wall of the annular slide rail is fixedly connected with an arc-shaped friction plate matched with the friction roller, the inner wall of the detection ring is fixedly connected with a first detection probe, the outer wall of the detection ring is fixedly connected with two small lead screw linear modules, the output ends of the two small lead screw linear modules are oppositely arranged and are each connected with a detection plate, the end portion of the detection plate is fixedly connected with a transverse plate, and the side walls of the detection plate and the transverse plate are each fixedly connected with a plurality of second detection probes.

[0012] In the surface defect detection device of a forged piece, the inner wall of the detection ring is annularly distributed with three ranging probes, and the three ranging probes are electrically connected with the controller.

[0013] In the surface defect detection device of a forged piece, the two sides of the adjusting plate are fixedly connected with positioning plates, the lower side wall of the positioning plate is fixedly connected with a visual sensor, and the visual sensor is electrically connected with the controller.

[0014] In the surface defect detection device of a forged piece, the lower side wall of the threaded cylinder is fixedly connected with a short rod, the lower end of the short rod is fixedly connected with a guide cylinder, and the inner wall of the moving cavity is fixedly connected with a guide rod in sliding fit with the guide cylinder.

[0015] Compared with the prior art, the surface defect detection device of a forged piece has the following advantages:

[0016] 1. By arranging the adjusting assembly and the detection assembly, the surface defects of the crankshaft are detected in a region-by-region synchronous manner, the surface of the journal, the crank arm and the balance block are detected, different types of crankshafts are adapted, the detection blind area caused by the complex structure is greatly eliminated, the defects such as micro-cracks and scratches of the key parts are ensured to be not missed, the detection efficiency is significantly improved, the time loss of single-region detection is avoided, the debugging period of the tool clamps and parameters during the detection of different types of crankshafts is reduced, the equipment investment and production cost are reduced, the versatility and flexibility of the detection system are enhanced, in addition, the synchronous detection data can realize linkage analysis of multi-region defect information, provide comprehensive and accurate basis for defect quantization grading and repair decision, and improve the overall quality control level of the crankshaft.

[0017] 2. By arranging the moving assembly and the clamping assembly, the universal clamping and fixing of different types of crankshafts during the detection of the surface defects of the crankshaft is realized, the disassembly and debugging process of the tool clamps during the replacement of the crankshaft type is greatly reduced, the detection preparation time is shortened, the detection circulation efficiency of the production line is improved, the cost investment of the special clamps for different types of crankshafts is avoided, the overall operation and production cost of the equipment is reduced, the positioning state of all types of crankshafts during the detection process is ensured to be stable and accurate, the imaging deviation or detection blind area caused by the clamping deviation is prevented, and the accuracy and consistency of the defect detection of the key parts such as the journal, the crank arm and the balance block are ensured.

[0018] 3, By setting the adjusting assembly, when detecting the surface defects of the crankshaft, the detection assembly can automatically adjust the position according to the position space of the crankshaft part, can flexibly adapt to the spatial distribution of complex special-shaped structures such as crankshaft journal, crank arm and balance block, accurately fits the curved surface of each detection part, effectively eliminates the detection blind area caused by structural shielding or curvature change; without manual adjustment of the detection assembly posture, reduces the human operation error, improves the detection efficiency and automation degree; at the same time, it can be compatible with the structural differences of different types of crankshafts, reduce the equipment debugging frequency and operation difficulty, and ensure the comprehensiveness and accuracy of the detection of various crankshaft surface micro-cracks, scratches and other defects. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of a forging surface defect detection device provided by the application.

[0020] Figure 2 It is a structure schematic view of a clamping assembly in a forging surface defect detection device provided by the application.

[0021] Figure 3 It is a structure schematic view of a detection assembly in a forging surface defect detection device provided by the application.

[0022] Figure 4 It is an internal structure schematic view of an annular slide rail in a forging surface defect detection device provided by the application.

[0023] Figure 5 It is a structure schematic view of a moving assembly in a forging surface defect detection device provided by the application.

[0024] In the figure: 1 base, 2 controller, 3 crankshaft, 4 mounting frame, 5 moving assembly, 51 moving cavity, 52 threaded rod, 6 driving motor, 7 threaded cylinder, 8 moving rod, 9 moving port, 10 moving seat, 11 clamping assembly, 111 vertical rod, 112 lower arc-shaped clamping plate, 12 support frame, 13 clamping electric push rod, 14 upper arc-shaped clamping plate, 15 adjusting assembly, 151 adjusting electric push rod, 152 first lead screw linear module, 16 second lead screw linear module, 17 adjusting plate, 18 detection assembly, 181 detection ring, 182 annular slide rail, 19 slide rail ring, 20 arc-shaped connecting plate, 21 micro drive motor, 22 friction roller, 23 arc-shaped friction plate, 24 first detection probe, 25 small lead screw linear module, 26 detection plate, 27 cross plate, 28 second detection probe, 29 distance measuring probe, 30 positioning plate, 31 visual sensor, 32 short rod, 33 guide cylinder, 34 guide rod. DETAILED DESCRIPTION

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] like Figures 1-5 As shown, a surface defect detection device for forgings includes a base 1, a controller 2 connected to the side wall of the base 1, a moving component 5 inside the base 1, and a crankshaft 3 clamped by a clamping component 11 at the moving end of the moving component 5 and the surface of the base 1. The moving component 5 includes a moving cavity 51 opened inside the base 1, a threaded rod 52 rotatably connected to the inner wall of the moving cavity 51, a drive motor 6 fixedly connected to the outer wall of the base 1, the output end of the drive motor 6 passing through the base 1 and fixedly connected to one end of the threaded rod 52, a threaded cylinder 7 threadedly fitted onto the wall of the threaded rod 52, a short rod 32 fixedly connected to the lower side wall of the threaded cylinder 7, a guide cylinder 33 fixedly connected to the lower end of the short rod 32, a guide rod 34 slidably engaged with the guide cylinder 33 fixedly connected to the inner wall of the moving cavity 51, a moving rod 8 fixedly connected to the upper side wall of the threaded cylinder 7, and the upper side wall of the moving cavity 51... A movable opening 9 is provided to cooperate with the movable rod 8. The upper end of the movable rod 8 extends out of the base 1 through the movable opening 9. A movable seat 10 is fixedly connected to the upper end of the movable rod 8. The movable seat 10 is connected to a clamping assembly 11 on one side. Both clamping assemblies 11 include vertical rods 111. The upper side wall of the movable seat 10 is fixedly connected to the lower end of one of the vertical rods 111. The lower end of the other vertical rod 111 is fixedly connected to the upper side wall of the base 1. A lower arc-shaped clamping plate 112 is fixedly connected to the upper end of both vertical rods 111. A support frame 12 is fixedly connected to the rod wall of the vertical rod 111. The support frame 12 has a U-shaped structure. A clamping electric push rod 13 is fixedly connected to the upper side wall of the support frame 12. The output end of the clamping electric push rod 13 passes through the support frame 12 and is fixedly connected to an upper arc-shaped clamping plate 14 through a pressure sensor. A mounting bracket 4 is fixedly connected to the upper side wall of the base 1. The base 1 also includes:

[0027] An adjustment assembly 15 is located on top of the mounting bracket 4. The output end of the adjustment assembly 15 is connected to a detection assembly 18, which is located above the crankshaft 3. The adjustment assembly 15 includes an adjustment electric push rod 151 fixedly connected to the upper side wall of the mounting bracket 4. The output end of the adjustment electric push rod 151 passes through the mounting bracket 4 and is fixedly connected to a first lead screw linear module 152. The first lead screw linear module 152 is arranged horizontally. The moving end of the first lead screw linear module 152 is fixedly connected to a second lead screw linear module 16, which is arranged vertically. The moving end of the second lead screw linear module 16 is fixedly connected to an adjustment plate 17. Positioning plates 30 are fixedly connected to both sides of the adjustment plate 17. A vision sensor 31 is fixedly connected to the lower side wall of the positioning plate 30. The vision sensor 31 is electrically connected to the controller 2. The lower end of the adjustment plate 17 is connected to the detection assembly 18.

[0028] The detection assembly 18 comprises a detection ring 181, the detection ring 181 is of an open structure, three ranging probes 29 are annularly distributed on the inner wall of the detection ring 181, the three ranging probes 29 are electrically connected with the controller 2, an annular sliding rail 182 is fixedly arranged on the outer wall of the detection ring 181, a sliding rail ring 19 is slidingly arranged in the annular sliding rail 182, the sliding rail ring 19 is of an inverted T-shaped structure, an arc-shaped connecting plate 20 is fixedly connected to one end of the sliding rail ring 19 extending out of the annular sliding rail 182, the lower end of the adjusting plate 17 is connected with the side wall of the arc-shaped connecting plate 20, a plurality of micro drive motors 21 are connected to the side wall of the sliding rail ring 19 through supports, the micro drive motors 21 are annularly distributed on the side wall of the sliding rail ring 19, a friction roller 22 is fixedly connected to the output end of the micro drive motor 21, an arc-shaped friction plate 23 matched with the friction roller 22 is fixedly connected to the inner wall of the annular sliding rail 182, a first detection probe 24 is fixedly connected to the inner wall of the detection ring 181, two small-sized screw linear modules 25 are fixedly connected to the outer wall of the detection ring 181, the output ends of the two small-sized screw linear modules 25 are oppositely arranged and are both connected with a detection plate 26, the end portion of the detection plate 26 is fixedly connected with a horizontal plate 27, and the side walls of the detection plate 26 and the horizontal plate 27 are both fixedly connected with a plurality of second detection probes 28.

[0029] The operating principle of the present application is described as follows: the operator detects the length of the crankshaft 3 according to the need, controls the movement of one side of the clamping assembly 11 through the movement assembly 5, controls the drive motor 6 to work through the external control switch, the drive motor 6 drives the threaded rod 52 to rotate, drives the threaded cylinder 7 to move through the threaded cooperation, the threaded cylinder 7 drives one side of the clamping assembly 11 to move towards the other clamping assembly 11 through the movement rod 8 and the movement base 10, then the operator places the crankshaft 3 above the two lower arc-shaped clamping plates 112, and then sends an electric signal to the controller 2 through the external switch, the controller 2 controls the clamping electric push rod 13 on both sides to work after receiving the electric signal, the clamping electric push rod 13 drives the upper arc-shaped clamping plate 14 to move downwards through the pressure sensor (not shown in the figure), and the controller 2 controls the clamping electric push rod 13 to stop working when the controller 2 detects that the extrusion force between the upper arc-shaped clamping plate 14 and the crankshaft 3 reaches the set threshold value (50N), and the crankshaft 3 is clamped and fixed by the upper arc-shaped clamping plate 14 and the lower arc-shaped clamping plate 112.

[0030] When the clamping electric push rod 13 stops working, the controller 2 controls the first lead screw linear module 152 to work, and the first lead screw linear module 152 drives the second lead screw linear module 16 and the detection assembly 18 to move horizontally, so that the detection assembly 18 moves above the crankshaft 3. Then, the controller 2 controls the second lead screw linear module 16 to work, and the second lead screw linear module 16 drives the detection assembly 18 to move vertically. After the controller 2 detects that the detection ring 181 moves above the connecting rod journal or the main shaft journal through the visual sensor 31, the controller 2 controls the second lead screw linear module 16 to stop working. Then, the controller 2 controls the adjusting electric push rod 151 to work, and the adjusting electric push rod 151 drives the detection assembly 18 to move downward through the first lead screw linear module 152 and the second lead screw linear module 16. During the movement of the detection assembly 18, the controller 2 controls the three distance measuring probes 29 to work. When the center of the detection ring 181 coincides with the connecting rod journal or the main shaft journal during the movement of the detection ring 181 in the detection assembly 18, the distance data detected by the three distance measuring probes 29 are completely the same. After the controller 2 detects the situation, the controller 2 controls the adjusting electric push rod 151 to stop working.

[0031] Then, the controller 2 controls the plurality of micro drive motors 21 to work, and the micro drive motors 21 drive the friction rollers 22 to rotate. Through the friction between the friction rollers 22 and the arc-shaped friction plates 23, the driving ring slide rails 182 are driven to rotate, and the driving ring slide rails 182 drive the detection ring 181 and the first detection probe 24 to rotate together. The controller 2 detects the surface defects of the connecting rod journal or the main shaft journal through the first detection probe 24. During the detection, the controller 2 controls the first lead screw linear module 152 to work, and the first lead screw linear module 152 drives the detection ring 181 and the first detection probe 24 to move horizontally on the connecting rod journal or the main shaft journal, so that the surface defects of the connecting rod journal or the main shaft journal can be fully detected. During the rotation of the detection ring 181, the controller 2 controls the small lead screw linear module 25 and the second detection probe 28 to work. The small lead screw linear module 25 drives the detection plate 26 and the second detection probe 28 to move, so that the second detection probe 28 fully detects the defects of the balance block or the side wall of the crank arm. When the detection ring 181 moves to the set position (the movement position of the detection ring 181 can be judged by the controller 2 through the visual sensor 31), the controller 2 controls the small lead screw linear module 25 to drive the detection plate 26 and the cross plate 27 to move to the set position away from the detection ring 181. The first lead screw linear module 152 drives the cross plate 27 to move to the outer edge surface of the balance block or the crank arm to detect the defects. After the detection of one connecting rod journal or main shaft journal is completed, the controller 2 repeats the above detection steps to detect the surface defects of other connecting rod journals, main shaft journals, balance blocks and crank arms.

[0032] The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A surface defect detection device for forgings, comprising a base (1), a controller (2) connected to the side wall of the base (1), a moving component (5) provided inside the base (1), a crankshaft (3) being clamped by a clamping component (11) at the moving end of the moving component (5) and the surface of the base (1), and a mounting bracket (4) fixedly connected to the upper side wall of the base (1), characterized in that, Also includes: An adjustment assembly (15) is disposed on the top of the mounting bracket (4). The output end of the adjustment assembly (15) is connected to a detection assembly (18). The detection assembly (18) is located above the crankshaft (3). The adjustment assembly (15) includes an adjustment electric push rod (151) fixedly connected to the upper side wall of the mounting bracket (4). The output end of the adjustment electric push rod (151) passes through the mounting bracket (4) and is fixedly connected to a first lead screw linear module (152). The first lead screw linear module (152) is arranged laterally. The moving end of the first lead screw linear module (152) is fixedly connected to a second lead screw linear module (152). A lead screw linear module (16) is arranged longitudinally. An adjusting plate (17) is fixedly connected to the moving end of the second lead screw linear module (16). The lower end of the adjusting plate (17) is connected to a detection component (18). The detection component (18) includes a detection ring (181). The detection ring (181) has an open structure. An annular slide rail (182) is fixedly sleeved on the outer wall of the detection ring (181). A slide rail ring (19) is slidably arranged inside the annular slide rail (182). The cross-section of the slide rail ring (19) is an inverted T-shaped structure. 9) An arc-shaped connecting plate (20) is fixedly connected to one end of the extended annular slide rail (182). The lower end of the adjusting plate (17) is connected to the side wall of the arc-shaped connecting plate (20). Multiple micro-drive motors (21) are connected to the side wall of the slide rail ring (19) through a bracket. The micro-drive motors (21) are distributed in a ring on the side wall of the slide rail ring (19). Friction rollers (22) are fixedly connected to the output end of the micro-drive motors (21). An arc-shaped friction plate (23) matching the friction roller (22) is fixedly connected to the inner wall of the annular slide rail (182). The inner wall of the detection ring (181) is... The outer wall of the detection ring (181) is fixedly connected to a first detection probe (24). Two small lead screw linear modules (25) are fixedly connected to the outer wall of the detection ring (181). The output ends of the two small lead screw linear modules (25) are arranged opposite to each other and are both connected to a detection plate (26). A horizontal plate (27) is fixedly connected to the end of the detection plate (26). Multiple second detection probes (28) are fixedly connected to the side walls of the detection plate (26) and the horizontal plate (27). Three ranging probes (29) are distributed in a ring on the inner wall of the detection ring (181). All three ranging probes (29) are electrically connected to the controller (2).

2. The forging surface defect detection device according to claim 1, characterized in that, The moving component (5) includes a moving cavity (51) opened inside the base (1). A threaded rod (52) is rotatably connected to the inner wall of the moving cavity (51). A drive motor (6) is fixedly connected to the outer wall of the base (1). The output end of the drive motor (6) passes through the base (1) and is fixedly connected to one end of the threaded rod (52). A threaded cylinder (7) is threadedly fitted on the rod wall of the threaded rod (52). A moving rod (8) is fixedly connected to the upper side wall of the threaded cylinder (7). A moving opening (9) that cooperates with the moving rod (8) is opened on the upper side wall of the moving cavity (51). The upper end of the moving rod (8) extends out of the base (1) through the moving opening (9). A moving seat (10) is fixedly connected to the upper end of the moving rod (8). The moving seat (10) is connected to a clamping component (11) on one side.

3. The forging surface defect detection device according to claim 2, characterized in that, Both clamping assemblies (11) include a vertical rod (111). The upper side wall of the movable seat (10) is fixedly connected to the lower end of one of the vertical rods (111), and the lower end of the other vertical rod (111) is fixedly connected to the upper side wall of the base (1). The upper ends of both vertical rods (111) are fixedly connected to a lower arc-shaped clamping plate (112). The rod wall of the vertical rod (111) is fixedly connected to a support frame (12). The support frame (12) has a U-shaped structure. The upper side wall of the support frame (12) is fixedly connected to a clamping electric push rod (13). The output end of the clamping electric push rod (13) passes through the support frame (12) and is fixedly connected to an upper arc-shaped clamping plate (14) through a pressure sensor.

4. The forging surface defect detection device according to claim 1, characterized in that, Positioning plates (30) are fixedly connected to both sides of the adjustment plate (17), and a vision sensor (31) is fixedly connected to the lower side wall of the positioning plate (30). The vision sensor (31) is electrically connected to the controller (2).

5. The forging surface defect detection device according to claim 2, characterized in that, A short rod (32) is fixedly connected to the lower side wall of the threaded cylinder (7), and a guide cylinder (33) is fixedly connected to the lower end of the short rod (32). A guide rod (34) that slides with the guide cylinder (33) is fixedly connected to the inner wall of the moving cavity (51).

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