Fixture for remanufacturing and repairing engine parts

Abstract

The invention belongs to the technical field of engine repairing devices, and particularly relates to an engine part remanufacturing repairing clamp which comprises a clamp platform, a fixed platform and a movable platform, the clamp platform comprises a bottom table and an installation table, the fixed platform and the movable platform are arranged at the two ends of the clamp platform respectively, and the movable platform is installed in a sliding mode. The relative position with the fixed platform is changed through movement; a fixed clamp and a movable clamp are mounted on the fixed platform and the movable platform respectively, and the fixed clamp and the movable clamp are the same in structure; according to the scheme, three core modules of structure cooperation, clamping control and flaw detection are developed, all the parts are cooperated through a mechanical structure, an electric control system and an algorithm, stable clamping, accurate flaw detection and repair assistance of the special-shaped parts of the engine are achieved, the early-stage pretreatment work of repair can be achieved, the follow-up process is reduced, and the repair efficiency is improved. And the automation level and the repairing quality of engine part remanufacturing are remarkably improved, and important engineering application value is achieved.

Description

Technical Field

[0001] This invention relates to the field of engine repair equipment technology, specifically a fixture for remanufacturing and repairing engine parts. Background Technology

[0002] Remanufacturing and repairing engine components (such as cylinder blocks, crankshafts, and turbine blades) is a crucial step in achieving resource recycling and reducing industrial costs. These components are often irregularly shaped and may have defects such as wear, cracks, and porosity on their surfaces, requiring multiple processes including clamping and fixing, defect detection, and targeted repair.

[0003] Existing fixtures used for remanufacturing engine parts have the following shortcomings:

[0004] 1) Poor versatility: Traditional fixtures are mostly custom-designed for specific models or shapes of parts, making it difficult to adapt to parts of different sizes and irregular structures. Frequent fixture changes result in low remanufacturing efficiency.

[0005] 2) Insufficient clamping accuracy and safety: Rigid clamping structures are prone to crushing damage to thin-walled parts and precision surfaces, while flexible clamping structures are difficult to guarantee stable positioning accuracy and cannot meet the rigid requirements of subsequent flaw detection and repair.

[0006] 3) Separation of inspection and clamping: The clamping and fixing of parts and defect inspection are mostly independent processes, requiring manual transfer of workpieces. This not only increases the number of operation steps, but may also affect the inspection accuracy due to secondary positioning errors, and may even cause secondary damage to the workpiece.

[0007] 4) Low level of automation: Clamping force adjustment and flaw detection position adjustment rely heavily on manual operation, resulting in large fluctuations in accuracy. Furthermore, the lack of data recording and traceability functions makes it difficult to meet the intelligent management needs of modern remanufacturing.

[0008] For the reasons mentioned above, we propose a fixture for remanufacturing and repairing engine parts. Summary of the Invention

[0009] The purpose of this invention is to provide a fixture for remanufacturing and repairing engine parts, so as to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a fixture for remanufacturing and repairing engine parts, comprising a fixture platform, a fixed platform and a movable platform. The fixture platform includes a base and a mounting platform. The fixed platform and the movable platform are respectively disposed at both ends of the fixture platform. The movable platform is slidably mounted and its relative position to the fixed platform is changed by moving.

[0011] Fixed clamps and mobile clamps are installed on the fixed platform and the mobile platform respectively. The fixed clamps and mobile clamps have the same structure and are equipped with flexible clamping structures, which can clamp various irregularly shaped parts.

[0012] A mobile flaw detection device is installed on the fixed platform. The mobile flaw detection device includes a first flaw detection device and a second flaw detection device. The first flaw detection device is used for large-area flaw detection, and the second flaw detection device is used for re-inspection and precision flaw detection.

[0013] Preferably, the base is located at the bottom of the mounting platform, and the fixed platform is located at one end of the mounting platform to keep the mounting platform stable; the top of the mounting platform is provided with a sliding rail, and the upper part of the front and rear side surfaces of the mounting platform is provided with gear edges.

[0014] The first control box is installed on the fixed platform, and the second control box is installed on the mobile platform.

[0015] Preferably, the mobile platform is slidably mounted on the sliding rail, and the front and rear sides of the mobile platform are provided with downwardly extending limiting edges; a drive device is symmetrically mounted on the mobile platform near the gear edge, the drive device includes a drive motor and a drive gear, the drive motor is fixed on the mobile platform, the drive gear is mounted on the transmission end of the drive motor, and the drive gear meshes with the gear edge; after the drive device is started synchronously, it moves left and right along the gear edge to adjust the distance between the mobile platform and the fixed platform.

[0016] Preferably, the fixing clamp includes a chuck and radially distributed limiting rods. The limiting rods are movably inserted into the chuck and can be completely stored inside the chuck. A spring post is installed at the other end of the limiting rod. A permanent magnet is installed at the connection between the spring post and the limiting rod, and a rubber shock-absorbing pad is sleeved on the permanent magnet. The spring post can buffer the clamping force.

[0017] Preferably, an electromagnet is installed inside the clamp, and the electromagnet is connected to a reversing relay. When the electromagnet is energized, it pushes or attracts the limit rod to move. The power of the electromagnet is controlled to control the pushing force on the limit rod, so as to achieve precise clamping. A protective pad is sleeved on the end of the limit rod away from the electromagnet.

[0018] Preferably, the mobile flaw detection device is mounted in an arch shape on the mounting platform. The second flaw detection device is located on the side of the first flaw detection device near the mobile platform. Each end of the first flaw detection device is equipped with a locking block near the gear edge. The locking blocks are slidably locked onto the gear edge. A moving device is symmetrically installed on the side of the locking block away from the gear edge. The moving device includes a moving motor and a moving gear. The moving gear is located inside the locking block and meshes with the gear edge. After the moving device is started synchronously, it is driven along the gear edge to adjust the position of the mobile flaw detection device on the mounting platform.

[0019] Preferably, the second flaw detection device is also arched, and the side of the second flaw detection device near the moving platform has an inwardly recessed arc-shaped track. An arc-shaped displacement device is movably installed on the second flaw detection device. The arc-shaped displacement device includes a displacement motor and a displacement wheel. The displacement motor is connected to the displacement wheel in a transmission, and the displacement wheel is engaged in the arc-shaped track. A cavity is opened at the top of the arc-shaped track, and the top of the displacement wheel is inserted into the cavity, so that the top of the displacement wheel is unrestricted. The arc-shaped displacement device moves in an arc along the arc-shaped track, so that the mobile re-inspection device changes the relative position with the parts.

[0020] Preferably, the first flaw detection device has multiple fixed ultrasonic detectors axially distributed on it, and one or more fixed ultrasonic detectors are activated to perform preliminary flaw detection on the clamped parts.

[0021] The arc-shaped displacement device has a mounting frame on the side near the mobile platform. The mounting frame is equipped with a mobile re-inspection device, which is equipped with a more precise ultrasonic detector. When the ultrasonic detector detects a crack at a certain location, the system will sound an alarm and then move the mobile re-inspection device to the suspected crack location for a second, precise flaw detection. This re-inspection of the crack at that location eliminates false detections, making it very convenient.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] This solution is developed from three core modules: structural coordination, clamping control, and flaw detection. Each part works together through mechanical structure, electronic control system, and algorithm to achieve stable clamping, accurate flaw detection, and repair assistance for irregularly shaped engine parts. It can realize pre-processing work in the early stage of repair, reduce subsequent processes, and significantly improve the automation level and repair quality of engine parts remanufacturing, which has important engineering application value.

[0024] 1) Improve the versatility of the fixture and adapt to various irregular parts: Through the radial limiting rod structure of the fixed fixture and the moving fixture, combined with the telescopic adjustment driven by the electromagnet (which can be fully retracted or extended), it can adapt to engine irregular parts of different sizes and shapes (such as turbine blades, crankshafts, etc.), without the need for frequent fixture changes, which significantly improves the efficiency of remanufacturing operations.

[0025] 2) Achieving a balance between flexible clamping and rigid fixation to protect the workpiece from damage: The spring column at the end of the limit rod adopts a multi-stage telescopic structure, combined with rubber shock-absorbing pads and protective pads, to achieve "soft contact" with the workpiece, avoiding workpiece deformation or surface damage caused by hard impact in the initial clamping stage; The electromagnet achieves continuous adjustment of thrust from 0-500N through PWM pulse width modulation technology, adapting to different clamping requirements from thin-walled to thick-walled parts. After the clamping is stable, "hard fixation" is achieved through magnetic pole locking, ensuring the positioning accuracy for subsequent inspection and repair.

[0026] 3) Integrated flaw detection function to achieve integrated clamping and inspection operation: The mobile flaw detection device can be flexibly moved to the workpiece position through gear side drive. The multiple ultrasonic detectors of the first flaw detection device realize large-area initial inspection, and the arc-shaped displacement re-inspection device of the second flaw detection device realizes precise defect positioning, with a resolution 300% higher than that of traditional probes. The combination of initial inspection and re-inspection, together with the laser marking device, automatically marks the area to be repaired, reduces workpiece transfer steps, avoids secondary positioning errors, and improves inspection efficiency and accuracy.

[0027] 4) High level of automation and intelligence to meet the needs of modern remanufacturing: It integrates a PLC system and an industrial touch screen to display data such as flaw detection images, clamping force, and platform position in real time. The built-in defect database can automatically identify defect types and provide repair suggestions. It supports data export and full-process traceability. The control box has wireless remote control and automatic power-off protection for overload, which improves the safety and convenience of operation. Attached Figure Description

[0028] Figure 1 This is a first side view of the present invention;

[0029] Figure 2 This is a second side view of the present invention;

[0030] Figure 3 This is a frontal plan view of the present invention;

[0031] Figure 4 For the present invention Figure 1 Partial schematic diagram;

[0032] Figure 5 This is a schematic diagram of the installation of the mobile flaw detection device of the present invention;

[0033] Figure 6 This is a cross-sectional view of the clamp and limiting rod of the present invention.

[0034] In the diagram: 100 clamping platform, 101 base platform, 102 mounting platform, 103 sliding rail, 104 gear edge;

[0035] 200 Fixed platform, 201 Fixed clamp, 202 First control box, 203 Chuck, 204 Electromagnet, 205 Limit rod, 206 Permanent magnet, 207 Spring column;

[0036] 300 Mobile platform, 301 Mobile fixture, 302 Second control box, 303 Drive device;

[0037] 400 Mobile flaw detection device, 401 First flaw detection device, 402 Second flaw detection device, 403 Clip block, 404 Mobile device, 405 Fixed ultrasonic detector, 406 Arc track, 407 Arc displacement device, 408 Mobile re-inspection device. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Example:

[0041] Please see Figure 1-6 The present invention provides the following technical solution:

[0042] A jig for remanufacturing and repairing engine parts includes a jig platform 100, a fixed platform 200, and a movable platform 300;

[0043] The fixed platform 200 and the movable platform 300 are respectively set at both ends of the clamping platform 100. The movable platform 300 is slidably installed and its relative position with the fixed platform 200 is changed by moving.

[0044] Fixed platform 200 and mobile platform 300 are respectively equipped with fixed clamp 201 and mobile clamp 301. Fixed clamp 201 and mobile clamp 301 have the same structure and are both equipped with flexible clamping structure, which can clamp various irregular parts.

[0045] A mobile flaw detection device 400 is movably installed on the fixed platform 200. The mobile flaw detection device 400 includes a first flaw detection device 401 and a second flaw detection device 402. The first flaw detection device 401 is used for large-area flaw detection, and the second flaw detection device 402 is used for re-inspection and precise flaw detection.

[0046] The clamping platform 100 includes a base 101 and a mounting platform 102. The base 101 is located at the bottom of the mounting platform 102, and the fixing platform 200 is located at one end of the mounting platform 102 to keep the mounting platform 102 stable.

[0047] A first control box 202 is installed on the fixed platform 200 to control the electromagnet 204 inside the fixed platform 200, and a second control box 302 is installed on the mobile platform 300 to control the electromagnet there.

[0048] The top of the mounting platform 102 is provided with a sliding rail 103, and the upper part of the front and rear side surfaces of the mounting platform 102 is provided with gear edges 104; the sliding rail 103 adopts a double-rail symmetrical structure, and the cross section of the sliding rail 103 is trapezoidal.

[0049] The mobile platform 300 is slidably mounted on the sliding rail 103, and the front and rear sides of the mobile platform 300 are provided with downwardly extending limiting edges for limiting assistance during sliding.

[0050] A drive device 303 is symmetrically installed on the mobile platform 300 near the gear edge 104. The drive device 303 includes a drive motor and a drive gear. The drive motor is fixed on the mobile platform 300, and the drive gear is installed on the transmission end of the drive motor and meshes with the gear edge 104. After the drive device 303 starts synchronously, it moves left and right along the gear edge 104 to adjust the distance between the mobile platform 300 and the fixed platform 200. The base 101 is set inside the two limiting edges, so that the mobile platform 300 is not interfered with when sliding.

[0051] The fixing clamp 201 includes a clamp 203 and radially distributed limiting rods 205. The limiting rods 205 are movably inserted into the clamp 203 and can be completely stored in the clamp 203.

[0052] A spring post 207 is installed at the other end of the limiting rod 205. A permanent magnet 206 is installed at the connection between the spring post 207 and the limiting rod 205, and a rubber shock-absorbing pad is sleeved on the permanent magnet 206. The spring post 207 can buffer the clamping force and prevent the parts from being deformed by pressure.

[0053] An electromagnet 204 is installed inside the chuck 203. The electromagnet 204 is connected to a reversing relay, which can switch the magnetic poles of the electromagnet 204. When the electromagnet 204 is energized, it can push or attract the limit rod 205 to move. Controlling the power of the electromagnet 204 can also control the pushing force on the limit rod 205, so as to achieve precise clamping. When the limit rod 205 is pushed outward, it can complete the limit clamping of the parts. It can adapt to various irregular parts and realize the versatility of the fixture. The end of the limit rod 205 away from the electromagnet 204 is fitted with a protective pad to reduce damage to the surface of the parts.

[0054] The mobile flaw detection device 400 is mounted in an arch shape on the mounting platform 102. The second flaw detection device 402 is located on the side of the first flaw detection device 401 near the mobile platform 300. The first flaw detection device 401 has a locking block 403 installed at both ends near the gear edge 104. The locking block 403 is slidably locked onto the gear edge 104. The moving device 404 is symmetrically installed on the side of the locking block 403 away from the gear edge 104. The moving device 404 includes a moving motor and a moving gear. The moving gear is located in the locking block 403 and meshes with the gear edge 104. After the moving device 404 is started synchronously, it is driven along the gear edge 104 to adjust the position of the mobile flaw detection device 400 on the mounting platform 102 and adjust it to the part for flaw detection.

[0055] The first flaw detection device 401 has multiple fixed ultrasonic detectors 405 axially distributed on it, and one or more fixed ultrasonic detectors 405 can be activated to perform preliminary flaw detection on the clamped parts.

[0056] The second flaw detection device 402 is also arched, and the side of the second flaw detection device 402 near the moving platform 300 is provided with an inwardly recessed arc-shaped track 406. An arc-shaped displacement device 407 is movably installed on the second flaw detection device 402. The arc-shaped displacement device 407 includes a displacement motor and a displacement wheel. The displacement motor is connected to the displacement wheel, and the displacement wheel is engaged in the arc-shaped track 406.

[0057] The top of the arc track 406 has a cavity, and the top of the displacement wheel is inserted into the cavity, so that the top of the displacement wheel is unrestricted. The arc displacement device 407 moves in an arc along the arc track 406, so that the mobile re-inspection device 408 changes its relative position with the parts, making it easier to detect more accurate information.

[0058] The arc-shaped displacement device 407 is equipped with a mounting frame on the side near the moving platform 300. A mobile re-inspection device 408 is mounted on the mounting frame, and a more precise ultrasonic detector is mounted on the mobile re-inspection device 408. When the ultrasonic detector 405 detects a crack at a certain location, the background will sound an alarm, and then the mobile re-inspection device 408 will be moved to the suspected crack location to perform a second precise flaw detection, re-inspect the crack condition at that location, and eliminate false detections, which is very convenient.

[0059] The mobile flaw detection device 400 can be moved to the right to a position close to the fixed platform 200. After use, it can be stored in this place to reduce interference during cleaning.

[0060] Both the fixed platform 200 and the mobile platform 300 are equipped with infrared alignment sensors on their sides. When clamping parts, the infrared alignment sensors automatically identify the workpiece's centerline and adjust the position of the mobile platform 300 through a background algorithm.

[0061] The limit rods 205 are made of titanium alloy and are close to each other to improve the wrapping effect of irregular parts;

[0062] Electromagnet 204 adopts a combination structure of rare earth permanent magnet and electromagnetic coil. Through the PWM pulse width modulation technology of the first control box 202 and the second control box 302, the thrust can be continuously adjusted from 0 to 500N to meet the clamping requirements from thin-walled parts to thick-walled parts.

[0063] The spring column 207 adopts a multi-stage telescopic structure, which, together with the magnetic attraction feedback of the permanent magnet 206, achieves a stepped clamping of "soft contact and hard fixation": when in contact with the workpiece, the spring column 207 buffers to avoid damage, and after the clamping is stable, the electromagnet 204 locks the position of the limit rod 205.

[0064] The mobile re-inspection device 408 is equipped with a phased array ultrasonic probe, which can generate three-dimensional defect images with a resolution 300% higher than that of traditional probes.

[0065] This solution integrates an industrial touch screen and a PLC system, which can display data such as flaw detection images, clamping force parameters, and platform position in real time; it supports automatic marking of defect locations, and a laser marker is set on the arc displacement device 407 to mark the area to be repaired on the workpiece surface.

[0066] The PLC system has a built-in defect database that can automatically compare historical inspection data, identify common defect types such as fatigue cracks and casting porosity, and provide repair suggestions; it also supports data export to a remanufacturing management system to achieve full-process traceability.

[0067] The first control box 202 and the second control box 302 are designed to be waterproof and dustproof, and have built-in current sensors. When the clamping force exceeds the set threshold, they will automatically cut off the power for protection. They support wireless remote control with an effective distance of ≥10m, which makes it convenient for operators to control the device in a safe area.

[0068] Working principle:

[0069] This solution is developed from three core modules: structural coordination, clamping control, and flaw detection. Each part works together through mechanical structure, electronic control system, and algorithm to achieve stable clamping, accurate flaw detection, and repair assistance for irregularly shaped engine parts. It can realize the pre-processing work of repair and reduce subsequent processes.

[0070] The fixture platform 100 consists of a base platform 101 and a mounting platform 102. The base platform 101 is located at the bottom to provide overall stability, and the mounting platform 102 provides a mounting foundation for the fixed platform 200, the mobile platform 300, and the flaw detection device.

[0071] The double-rail trapezoidal structure of the sliding rail 103 on the top of the mounting platform 102 provides a sliding rail for the mobile platform 300; the gear edges 104 on the front and rear sides of the mounting platform 102 provide a drive engagement structure for the movement of the mobile platform 300 and the mobile flaw detection device 400.

[0072] The mobile platform 300 is slidably mounted on the sliding rail 103 via the bottom structure, and the limiting edges on the front and rear sides can assist in the stability during sliding to prevent deviation.

[0073] The drive units 303 on both sides include drive motors and drive gears that mesh with the gear edge 104 of the mounting platform 102. After synchronous start-up, they can move left and right along the gear edge 104 to adjust the distance from the fixed platform 200 and adapt to parts of different lengths.

[0074] With the infrared alignment sensors on the sides of the fixed platform 200 and the moving platform 300, the workpiece centerline can be automatically identified, and the position of the moving platform 300 can be precisely adjusted through the background algorithm to ensure that the axis is aligned when the parts are clamped.

[0075] The limiting rod 205 is movably inserted into the chuck 203, and can be fully retracted or extended to improve the wrapping effect on irregularly shaped parts; the electromagnet 204 inside the chuck 203 is controlled by the first control box 202 or the second control box 302.

[0076] Electromagnet 204 is connected to a reversing relay and can switch magnetic poles. When energized, it pushes or attracts the limit rod 205 to move by means of the principle of "like poles repel / opposite poles attract" with the permanent magnet 206 at the end of the limit rod 205.

[0077] Using PWM pulse width modulation technology, the thrust is adjusted by controlling the power of electromagnet 204 to adapt to different clamping requirements from thin-walled to thick-walled parts; the spring column 207 at the end of the limit rod 205 has a multi-stage telescopic structure to buffer the clamping force; the rubber shock-absorbing pad outside the permanent magnet 206 and the protective pad at the end of the limit rod 205 further reduce damage to the surface of the parts.

[0078] After the component is placed, the electromagnet 204 is energized to push the limit rod 205 outward, and the radial limit rod 205 fits against the surface of the component to form a wrap-around clamp; the spring column 207 first achieves "soft contact" through elastic buffering to avoid damage from hard impact; after the clamping is stable, the electromagnet 204 locks the position of the limit rod 205 to achieve "hard fixation" to ensure that the component does not shift during inspection and repair;

[0079] The mobile flaw detection device 400 provides accurate defect information for component repair through a two-step inspection process of "initial inspection + re-inspection" combined with positioning and marking functions.

[0080] The mobile flaw detection device 400 is arched across the mounting platform 102. The locking blocks 403 at both ends are slidably locked onto the gear edge 104. The moving device 404 on the locking block 403 includes a moving motor and a moving gear that meshes with the gear edge 104. After starting, it can move along the gear edge 104 and be adjusted to the position of the component to be inspected.

[0081] Multiple fixed ultrasonic detectors 405 are distributed axially and can be activated individually or simultaneously to perform large-area scanning on the clamped parts, quickly identify suspected cracks, pores and other defect areas, and trigger a background alarm if an abnormality is detected.

[0082] The second flaw detection device 402 is located on the side of the first flaw detection device 401 near the mobile platform 300. Its arc-shaped displacement device 407 on the arc-shaped track 406 can move in an arc along the arc-shaped track 406, driving the mobile re-inspection device 408 on the mounting frame to adjust the relative position with the parts.

[0083] After the initial inspection alarm, the mobile re-inspection device 408 moves to the suspected defect location, generates a three-dimensional defect image, accurately confirms the defect type, such as fatigue cracks, casting porosity and size, and eliminates false detections.

[0084] The laser marking device on the arc displacement device 407 can mark the area to be repaired on the surface of the parts; the PLC system has a built-in defect database, which automatically compares historical data to identify the type of defect and provides repair suggestions. It supports data export to the remanufacturing management system to achieve full-process traceability.

[0085] The integrated industrial touch screen and PLC system can display data such as flaw detection images, clamping force parameters, and platform position in real time, allowing operators to intuitively monitor the equipment status; the first control box 202 and the second control box 302 support wireless remote control, facilitating remote operation in a safe area.

[0086] The first control box 202 and the second control box 302 have built-in current sensors. When the clamping force exceeds the set threshold, the power is automatically cut off to avoid damage to parts or fixtures. The control boxes are designed to be waterproof and dustproof, making them suitable for complex workshop environments.

[0087] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0088] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for remanufacturing and repairing engine parts, comprising a fixture platform (100), a fixed platform (200), and a moving platform (300), characterized in that: The clamping platform (100) includes a base (101) and a mounting platform (102). A fixed platform (200) and a movable platform (300) are respectively set at both ends of the clamping platform (100). The movable platform (300) is slidably installed and changes its relative position with the fixed platform (200) by moving. Fixed clamp (201) and mobile clamp (301) are respectively installed on the fixed platform (200) and the mobile platform (300). The fixed clamp (201) and the mobile clamp (301) have the same structure and are both equipped with flexible clamping structures, which can clamp various irregular parts. A mobile flaw detection device (400) is movably installed on a fixed platform (200). The mobile flaw detection device (400) includes a first flaw detection device (401) and a second flaw detection device (402). The first flaw detection device (401) is used for large-area flaw detection, and the second flaw detection device (402) is used for re-inspection and precise flaw detection.

2. A jig for remanufacturing and repairing engine parts according to claim 1, characterized in that: The base (101) is located at the bottom of the mounting platform (102), and the fixed platform (200) is located at one end of the mounting platform (102); the top of the mounting platform (102) is provided with a sliding rail (103), and the upper part of the front and rear sides of the mounting platform (102) is provided with gear edges (104). A first control box (202) is installed on a fixed platform (200), and a second control box (302) is installed on a mobile platform (300).

3. A jig for remanufacturing and repairing engine parts according to claim 2, characterized in that: The mobile platform (300) is slidably mounted on the sliding rail (103), and the front and rear sides of the mobile platform (300) are provided with downwardly extending limiting edges; the mobile platform (300) is symmetrically mounted with a drive device (303) near the gear edge (104). The drive device (303) includes a drive motor and a drive gear. The drive motor is fixed on the mobile platform (300), and the drive gear is mounted on the transmission end of the drive motor. The drive gear meshes with the gear edge (104); after the drive device (303) is started synchronously, it moves left and right along the gear edge (104) to adjust the distance between the mobile platform (300) and the fixed platform (200).

4. A jig for remanufacturing and repairing engine parts according to claim 2, characterized in that: The fixing clamp (201) includes a chuck (203) and radially distributed limiting rods (205). The limiting rods (205) are movably inserted into the chuck (203) and can be completely stored in the chuck (203). A spring post (207) is installed at the other end of the limiting rod (205). A permanent magnet (206) is installed at the connection between the spring post (207) and the limiting rod (205), and a rubber shock-absorbing pad is sleeved on the permanent magnet (206). The spring post (207) can buffer the clamping force.

5. A jig for remanufacturing and repairing engine parts according to claim 4, characterized in that: An electromagnet (204) is installed inside the chuck (203). The electromagnet (204) is connected to a reversing relay. When the electromagnet (204) is energized, it pushes or attracts the limit rod (205) to move. The power of the electromagnet (204) is controlled to control the pushing force on the limit rod (205) to achieve precise clamping. A protective pad is sleeved on the end of the limit rod (205) away from the electromagnet (204).

6. A jig for remanufacturing and repairing engine parts according to claim 2, characterized in that: The mobile flaw detection device (400) is set in an arch shape on the mounting platform (102). The second flaw detection device (402) is set on the side of the first flaw detection device (401) near the mobile platform (300). The first flaw detection device (401) has a locking block (403) installed at both ends near the gear edge (104). The locking block (403) is slidably locked on the gear edge (104). The moving device (404) is symmetrically installed on the side of the locking block (403) away from the gear edge (104). The moving device (404) includes a moving motor and a moving gear. The moving gear is set in the locking block (403) and meshes with the gear edge (104). After the moving device (404) is started synchronously, it is driven along the gear edge (104) to adjust the position of the mobile flaw detection device (400) on the mounting platform (102).

7. A jig for remanufacturing and repairing engine parts according to claim 6, characterized in that: The second flaw detection device (402) is also arched, and the side of the second flaw detection device (402) near the moving platform (300) is provided with an inwardly recessed arc-shaped track (406). An arc-shaped displacement device (407) is movably installed on the second flaw detection device (402). The arc-shaped displacement device (407) includes a displacement motor and a displacement wheel. The displacement motor is connected to the displacement wheel, and the displacement wheel is engaged in the arc-shaped track (406). A cavity is provided at the top of the arc-shaped track (406), and the top of the displacement wheel is inserted into the cavity, so that the top of the displacement wheel is not restricted. The arc-shaped displacement device (407) moves in an arc along the arc-shaped track (406), so that the mobile re-inspection device (408) changes the relative position with the parts.

8. A jig for remanufacturing and repairing engine parts according to claim 7, characterized in that: The first flaw detection device (401) has multiple fixed ultrasonic detectors (405) axially distributed on it. One or more fixed ultrasonic detectors (405) are activated to perform preliminary flaw detection on the clamped parts. An arc-shaped displacement device (407) is provided with a mounting frame on the side near the mobile platform (300). A mobile re-inspection device (408) is provided on the mounting frame. A more precise ultrasonic detector is installed on the mobile re-inspection device (408). When the ultrasonic detector (405) detects a crack at a certain location, the background will issue an alarm. Then, the mobile re-inspection device (408) will be moved to the suspected crack location to perform a second precise flaw detection and re-inspect the crack condition at that location.

Images