A comparative parts repair device and method based on 3D printing

Abstract

The present invention discloses a comparative part repair device and method based on 3D printing, which solves the problem that the printing position and angle of the 3D printing head in the existing method cannot be synchronously adjusted based on parts of different specifications and models, thereby affecting the accuracy of printing repair. The present invention belongs to the technical field of part repair, and comprises: a device support frame, the device support frame comprises a device base and a support stand; a part fixing mechanism, the part fixing mechanism is arranged on the support stand; an adjustable repair mechanism, the adjustable repair mechanism is arranged on the device base; the present invention is provided with an adjustable repair mechanism, the adjustable repair mechanism consists of a printing repair component, a swing adjustment part and a synchronous adjustment part component, the swing adjustment part cooperates with the synchronous adjustment part to adaptively adjust the position and angle of the printing repair component, so that the printing repair component can meet the needs of fast repair of defective positions of workpieces to be repaired with different specifications, thereby ensuring the accuracy of repair.

Description

Technical Field

[0001] The present invention belongs to the technical field of parts repair, and in particular relates to a comparison-type parts repair device and method based on 3D printing. Background Art

[0002] 3D printing technology, also known as additive manufacturing technology, is a manufacturing method that builds objects by stacking materials layer by layer. This technology is increasingly used in the field of mechanical manufacturing, especially in the field of parts repair, where it has shown unique advantages. 3D printing technology has significant application value and broad development prospects. It can not only improve the efficiency and quality of repair, but also reduce production costs and meet personalized needs. This technology scans the damaged parts based on 3D printing technology before repairing the parts, thereby generating a three-dimensional model of the damaged parts, and then compares the three-dimensional model of the damaged parts with the standard part model to find the defect location of the damaged parts. Then, a high-energy-density laser beam is used to act on a specific coating material, so that it melts and solidifies rapidly with the thin layer on the surface of the coated substrate, forming a surface coating that is metallurgically bonded to the substrate material, completing the precise repair of the parts.

[0003] Chinese patent CN104227313B discloses a method for repairing parts damaged by corrosion, which uses a milling cutter to automatically remove corrosion products layer by layer with the minimum milling amount, records the detailed three-dimensional data of the final milled surface, and then uses a 3D printing method to quickly repair the part to its original design shape, and then performs shot peening. The present invention also relates to a repair device for parts damaged by corrosion, including a manipulator with four degrees of freedom, the front end of the manipulator is provided with a milling cutter with interchangeable positions and a 3D printing head; however, in the existing method, the printing position and angle of the 3D printing head cannot be synchronously adjusted based on parts of different specifications and models, thereby affecting the accuracy of printing repair and is not conducive to the collection of the position of surface defects of parts. In response to the above problems, we propose a comparative part repair device and method based on 3D printing. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and provide a comparative part repair device and method based on 3D printing, which solves the problem that the printing position and angle of the 3D print head in the prior art cannot be synchronously adjusted based on parts of different specifications and models, thereby affecting the accuracy of printing and repair, and is not conducive to the collection of the surface defect positions of parts.

[0005] The present invention is implemented in this way: a contrast type parts repair device based on 3D printing, the contrast type parts repair device based on 3D printing comprises:

[0006] A device support frame, the device support frame comprising a device base and a support stand fixedly mounted on the device base;

[0007] A parts fixing mechanism, the parts fixing mechanism is arranged on the supporting stand, and the parts fixing mechanism is used to clamp the workpiece to be repaired and drive the workpiece to be repaired to move;

[0008] An adjustable repair mechanism, the adjustable repair mechanism is arranged on the device base, and the adjustable repair mechanism is used to perform welding repair on the workpiece to be repaired;

[0009] Wherein, the adjustable repair mechanism comprises:

[0010] At least one set of printing repair components, wherein the printing repair components perform repair operations on the workpiece to be repaired based on 3D printing;

[0011] A repair support seat, the repair support seat is slidably mounted on the device base, and the repair support seat is used to support the printing repair component;

[0012] A swing adjustment part, the swing adjustment part is installed on the repair support seat, and the swing adjustment part is used to adjust the swing angle of the print repair component;

[0013] At least one group of synchronous adjustment parts connected to the swing adjustment part, the synchronous adjustment parts are also connected to the printing repair component, and the synchronous adjustment parts are used to synchronously adjust the rotation angle of the printing repair component.

[0014] Preferably, the part fixing mechanism comprises:

[0015] A first motor, wherein the first motor is fixedly mounted on the supporting stand;

[0016] A fixed rotating seat fixedly connected to the output shaft of the first motor, wherein the fixed rotating seat is rotationally connected to the supporting stand;

[0017] A self-adjusting locking portion is provided on the fixed rotating seat and is used to lock workpieces to be repaired of different specifications.

[0018] Preferably, the self-adjusting locking portion comprises:

[0019] A locking positioning plate, the locking positioning plate is fixedly connected between the fixed rotating seats, and at least one group of locking positioning grooves is formed on the locking positioning plate;

[0020] At least one set of adjusting hollow disks is rotatably mounted in the locking positioning disk, the adjusting hollow disks are fixedly connected by disk limiting columns, and an adjusting toggle seat is fixedly mounted on the side wall of the adjusting hollow disk, and a locking positioning rod is threadedly connected to the adjusting toggle seat, and the locking positioning rod cooperates with the locking positioning groove to lock the adjusting hollow disk;

[0021] A positioning rotating rod rotatably installed on the locking positioning disk, one end of the positioning rotating rod passes through the adjusting hollow disk and is detachably connected to a locking limiting roller, the locking limiting roller is used to fix the workpiece to be repaired, and at least one group of limiting sleeve seats is arranged in the locking positioning disk, the limiting sleeve seat is slidably sleeved on the positioning rotating rod, and the limiting sleeve seat is rotatably connected to the adjusting hollow disk.

[0022] Preferably, it also includes:

[0023] A mechanism displacement component, the mechanism displacement component is arranged on the device base, and the mechanism displacement component is connected to the adjustable repair mechanism, and the mechanism displacement component is used to adjust the position of the adjustable repair mechanism;

[0024] Wherein, the mechanism displacement component comprises:

[0025] a second motor, the second motor being fixedly mounted on the device base;

[0026] An adjusting screw fixedly connected to the output shaft of the second motor, wherein one end of the adjusting screw away from the second motor is rotatably connected to the device base, and an adjusting threaded seat is provided on the threaded sleeve of the adjusting screw, and the adjusting threaded seat is detachably connected to the repair support seat;

[0027] At least one set of displacement guide grooves is provided on the device base, and a displacement guide block is slidably installed in the displacement guide groove, and one side of the displacement guide block is fixedly connected to the side wall of the adjusting threaded seat.

[0028] Preferably, the swing adjustment unit comprises:

[0029] A third motor, the third motor is fixedly mounted on the repair support seat;

[0030] A first gear, which is disposed on one side of the third motor and is fixedly connected to an output shaft of the third motor;

[0031] A first gear ring is rotatably mounted in the repair support seat, wherein the outer side of the first gear ring is meshed with the first gear for transmission, and a plurality of drive pins are circumferentially arranged on the inner side of the first gear ring;

[0032] At least one set of second gear rings, the second gear rings are arranged on the inner side of the first gear ring, and the outer side walls of the second gear rings are provided with multiple sets of helical teeth, the helical teeth are meshed with the driving pin shaft for transmission, one side of the second gear ring is fixedly connected with at least one set of arc-shaped sleeve seats, the arc-shaped sleeve seats are slidably mounted on the arc-shaped guide seats, the arc-shaped guide seats are fixedly mounted on the side walls of the repair support seat, and the second gear ring is also connected to the synchronous adjustment part.

[0033] Preferably, the synchronization adjustment unit includes:

[0034] A third gear ring, the third gear ring is rotatably disposed in the repair support seat, and the third gear ring is provided with a plurality of groups of special-shaped teeth;

[0035] At least one group of second gears, the second gears are meshed with the special-shaped teeth on the third gear ring for transmission, one side of the second gear is rotatably connected to a gear mounting seat, the side wall of the gear mounting seat is fixedly connected to the end wall of the second gear ring, and a fourth motor is fixedly installed in any group of the gear mounting seats, and the output shaft of the fourth motor is fixedly connected to a group of the second gears.

[0036] Preferably, the print repair component comprises:

[0037] A wire disc heating seat, wherein the wire disc heating seat is fixedly mounted on a side wall of the second gear;

[0038] A printing nozzle fixedly connected to the wire spool heating seat, the printing nozzle is used to print and repair the workpiece to be repaired;

[0039] At least one set of three-dimensional scanners, the three-dimensional scanners are fixedly mounted on the side wall of the wire disc heating seat, and the three-dimensional scanners are used to collect the surface image of the workpiece to be repaired;

[0040] A position sensor is arranged on the side wall of the wire spool heating seat, and the position sensor is used to collect position information of the printing nozzle.

[0041] Preferably, it also includes:

[0042] An auxiliary turning mechanism, which is arranged on one side of the repair support seat and is used for turning the workpiece to be repaired;

[0043] Wherein, the auxiliary turning mechanism comprises:

[0044] A turning mounting seat, wherein the turning mounting seat is fixedly mounted on the repair supporting seat;

[0045] A turning positioning seat fixedly mounted on the turning mounting seat;

[0046] At least one set of auxiliary turning parts, wherein the auxiliary turning parts are used to perform turning repair on the surface of the workpiece to be repaired;

[0047] A linkage adjustment portion for adjusting the position of the auxiliary turning portion, wherein the linkage adjustment portion is installed in the turning mounting seat;

[0048] Wherein, the linkage adjustment unit comprises:

[0049] An adjusting hydraulic cylinder, wherein the adjusting hydraulic cylinder is fixedly mounted on the turning mounting seat, and a telescopic end of the adjusting hydraulic cylinder is fixedly connected to a lifting slide, and the lifting slide is slidably mounted on the turning positioning seat;

[0050] At least one set of inclined push rods, wherein the inclined push rods are fixedly mounted on the lifting slide, and one end of the inclined push rods is hinged with a hinge block;

[0051] At least one set of position-limiting hinge seats, the position-limiting hinge seats are sleeved on the hinge block, and the position-limiting hinge seats are slidably connected to the hinge block, one end of the position-limiting hinge seat is fixedly connected to a linkage adjustment arm, the middle part of the linkage adjustment arm is rotatably connected to the turning positioning seat, and the end of the linkage adjustment arm is installed with an auxiliary turning part;

[0052] The auxiliary turning part comprises:

[0053] a fifth motor, wherein the fifth motor is fixedly mounted on the linkage adjustment arm, an output shaft of the fifth motor is fixedly connected to a rotating arm, and a sixth motor is fixedly mounted on one end of the rotating arm away from the fifth motor;

[0054] A turning chassis fixedly connected to the output shaft of the sixth motor, wherein at least one set of auxiliary turning tools is arranged in the turning chassis, and one end of the auxiliary turning tool is fixedly connected to a third gear, and the third gear is rotatably mounted on the turning chassis;

[0055] The fourth gear arranged in the turning chassis is rotated, and the fourth gear is meshed with the third gear for transmission. A seventh motor is fixedly connected to one side of the fourth gear, and the seventh motor is fixedly installed in the turning protection cover. The turning protection cover is detachably installed on the turning chassis.

[0056] On the other hand, the present invention also provides a comparative part repair method based on 3D printing, and the comparative part repair method based on 3D printing specifically comprises:

[0057] Step S10, before repairing the workpiece to be repaired, one end of the workpiece to be repaired is inserted into the adjusting hollow disk manually or by a robot, and then the adjusting toggle seat is manually rotated, the adjusting toggle seat drives the adjusting hollow disk to rotate, so that the adjusting hollow disk drives the limiting sleeve seat to rotate, and the adjusting sleeve seat drives the positioning rotating rod and the locking limiting roller to rotate, so that the multiple groups of the locking limiting rollers fix the end of the workpiece to be repaired.

[0058] Step S20, during operation, after the repaired workpiece is fixed, the repair controller controls the second motor to start, the second motor drives the adjusting screw to rotate, the adjusting screw drives the adjusting threaded seat and the repair supporting seat to move, so that the repair supporting seat drives the auxiliary turning mechanism and the printing repair component to move to the repair station.

[0059] Step S30, before repair, turn on the adjusting hydraulic cylinder, the adjusting hydraulic cylinder is started to drive the lifting slide to slide along the turning positioning seat, so that the lifting slide pushes the inclined push rod to move, and the inclined push rod drives the hinge block to move in the limit hinge seat, thereby driving the limit hinge seat and the linkage adjusting arm to swing, and then turn on the fifth motor, the fifth motor drives the rotating arm to rotate, so that the rotating arm drives the sixth motor and the auxiliary turning tool to rotate, and then turn on the seventh motor according to the specifications of the workpiece to be repaired, the seventh motor starts to drive the fourth gear to rotate, the fourth gear drives the third gear to rotate, so that the third gear drives the auxiliary turning tool to rotate, so as to adjust the position of the auxiliary turning tool, and then turn on the sixth motor to drive the turning chassis and the auxiliary turning tool to grind the defective area of ​​the workpiece to be repaired.

[0060] Step S40, when collecting parameter information of the workpiece to be repaired after turning, turn on the first motor, the first motor controls the fixed rotating seat, the locking positioning plate, the adjusting hollow plate, the locking positioning roller and the workpiece to be repaired to rotate, and then turn on the third motor, the third motor starts to drive the first gear and the first gear ring to rotate, the first gear ring drives the driving pin and the second gear ring to rotate, so that the second gear ring drives the second gear, the gear mounting seat and the printing repair component to swing, and then turn on the fourth motor, the fourth motor starts to drive a group of second gears to rotate, the second gear drives the third gear ring to rotate, so that the third gear ring drives the remaining two groups of second gears to rotate, so that the second gear drives the printing repair component to rotate, so as to adjust the rotation angle of the printing repair component, and then turn on the three-dimensional scanner and position sensor in the printing repair component to collect parameter information of the workpiece to be repaired.

[0061] Step S50, obtaining parameter information of the workpiece to be repaired after turning, traversing the workpiece model library, retrieving standard workpiece parameter information in the pre-built workpiece model library based on the parameter information of the workpiece to be repaired, and building a standard workpiece model using a three-dimensional modeling tool;

[0062] Step S60, taking the parameter information of the workpiece to be repaired as input, executing the pre-trained defect generation model, generating a workpiece defect model, rendering the workpiece defect model to a standard workpiece model, calculating the optimal path of the print head based on 3D printing technology, and generating a print head path code;

[0063] Step S70, load the nozzle path code, parse the control instructions of the nozzle path code, and the repair controller starts the first motor. The first motor controls the fixed rotating seat, the locking positioning disk, the adjusting hollow disk, the locking positioning roller and the workpiece to be repaired to rotate, and then turns on the third motor. The third motor starts to drive the first gear and the first gear ring to rotate. The first gear ring drives the driving pin and the second gear ring to rotate, so that the second gear ring drives the second gear, the gear mounting seat and the printing repair component to swing, and then turns on the fourth motor. The fourth motor starts to drive a group of second gears to rotate, and the second gear drives the third gear ring to rotate, so that the third gear ring drives the remaining two groups of second gears to rotate, so that the second gear drives the printing repair component to rotate, so as to adjust the rotation angle of the printing repair component, and then turns on the wire disk heating seat and the printing nozzle in the printing repair component to repair the surface defects of the workpiece to be repaired.

[0064] The method of executing the pre-trained defect generation model to generate a workpiece defect model specifically includes:

[0065] Loading parameter information of the workpiece to be repaired after turning, normalizing the parameter information of the workpiece to be repaired after turning, and obtaining normalized parameter data;

[0066] Acquire normalized parameter data, compare with standard workpiece model coordinate data, identify abnormal data in the normalized parameter data, and generate an abnormal node set based on the abnormal data;

[0067] Taking the abnormal node set as input, executing the defect generation model, obtaining the workpiece defect model, the defect generation model calculates the integrity of the workpiece defect model, and obtains the model integrity value;

[0068] The complete value of the model is calculated by formula (1):

[0069]

[0070] Among them, W is the complete value of the model, n is the number of abnormal nodes, (x m ,y m ,z m ) is the three-dimensional coordinate parameter of the abnormal point m, f(m) is the weight coefficient of the abnormal node, c is the Gaussian surround function scale of the defect generation model, and g is the defect coefficient of the abnormal point m, α is the coupling coefficient of the defect generation model;

[0071]

[0072] Among them, f(m) is the weight coefficient of the abnormal node, (x m ,y m ,z m ) is the three-dimensional coordinate parameter of the outlier point m, and U m is the model defect volume, Lm is the model node connection length, β is the model transformation amplitude;

[0073]

[0074] Among them, g is the defect coefficient of abnormal point m, (x m ,y m ,z m ) is the three-dimensional coordinate parameter of the outlier point m, ω is the state normalized variable value of the outlier point m;

[0075] Determine whether the model integrity value is greater than the preset integrity threshold. If it is greater than the preset integrity threshold, the workpiece defect model is output. If it is less than the preset integrity threshold, the defect generation model optimizes and adjusts the workpiece defect model until it meets the rule of being greater than the preset integrity threshold and outputs the workpiece defect model.

[0076] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0077] In an embodiment of the present invention, an adjustable repair mechanism is provided, and the adjustable repair mechanism consists of a printing repair component, a swing adjustment part and a synchronous adjustment part. The swing adjustment part cooperates with the synchronous adjustment part to adaptively adjust the position and angle of the printing repair component, so that the printing repair component can meet the needs of quickly repairing defective positions of workpieces to be repaired of different specifications, thereby ensuring the accuracy of the repair. The swing adjustment part cooperates with the synchronous adjustment part to synchronously adjust the positions of multiple groups of printing repair components, so that the multiple groups of printing repair components can coordinate with each other, which is more efficient and faster than the repair of the prior art.

[0078] In an embodiment of the present invention, a self-adjusting locking portion is provided, and the self-adjusting locking portion is composed of a locking positioning disk, an adjusting hollow disk, a positioning rotating rod, and a locking limiting roller. The locking positioning disk, the adjusting hollow disk, the positioning rotating rod, and the locking limiting roller cooperate with each other to lock and limit workpieces to be repaired of different specifications and models, thereby avoiding the phenomenon of workpieces falling off during repair. The self-adjusting locking portion cooperates with the first motor to adjust the rotational position of the workpiece to be repaired, thereby achieving the purpose of assisting the adjustable repair mechanism.

[0079] In an embodiment of the present invention, a swing adjustment unit is provided, which can realize synchronous adjustment of the swing angles of multiple groups of synchronous adjustment units and printing and repair components through the first gear ring, the second gear ring, and the driving pin shaft, thereby facilitating the printing and repair component to repair the surface of the workpiece to be repaired and collect parameter information of the workpiece to be repaired.

[0080] In an embodiment of the present invention, a printing repair component is provided, which is composed of a printing nozzle, a three-dimensional scanner and a position sensor. The printing nozzle, the three-dimensional scanner and the position sensor cooperate with each other to realize parameter collection of the special-shaped defect area on the surface of the workpiece to be repaired, thereby facilitating comparison with the standard workpiece, and then combining 3D printing technology to carry out comparative modeling of the workpiece to be repaired, thereby ensuring the accuracy of defect repair.

[0081] In an embodiment of the present invention, an auxiliary turning mechanism is provided, which is composed of an auxiliary turning part and a linkage adjustment part. The linkage adjustment part can flexibly adjust the position and angle of the auxiliary turning part, thereby facilitating the turning and scraping of the defective area of ​​the workpiece to be repaired. The setting of the auxiliary turning part can adjust the extension position of the auxiliary turning tool, so that the auxiliary turning tool can meet the repair requirements of workpieces to be repaired of different specifications.

[0082] In an embodiment of the present invention, a comparative part repair method based on 3D printing is provided. The method generates a workpiece defect model through a pre-trained defect generation model, and then renders the workpiece defect model to a standard workpiece model, thereby ensuring the accuracy of 3D printing. At the same time, when generating the workpiece defect model, the defect generation model can calculate the integrity of the workpiece defect model, obtain the model integrity value, and judge the model integrity value, thereby ensuring the effectiveness of the workpiece repair path and instructions, which is more accurate and effective than the existing modeling methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Figure 1 It is a structural schematic diagram of a comparative parts repair device based on 3D printing provided by the present invention.

[0084] Figure 2 It is a schematic diagram of the three-dimensional structure of the comparative parts repair device based on 3D printing provided by the present invention.

[0085] Figure 3 This is a front view of the comparison type parts repair device based on 3D printing provided by the present invention.

[0086] Figure 4 It is a top view of the comparative parts repair device based on 3D printing provided by the present invention.

[0087] Figure 5 It is a structural schematic diagram of the part fixing mechanism provided by the present invention.

[0088] Figure 6 It is an axonometric view of the part fixing mechanism provided by the present invention.

[0089] Figure 7 It is a front view of the parts fixing mechanism provided by the present invention.

[0090] Figure 8 It is a side view of the part fixing mechanism provided by the present invention.

[0091] Fig. 9 It is a structural schematic diagram of the adjustable repair mechanism provided by the present invention.

[0092] Fig.10 It is an axonometric diagram of the adjustable repair mechanism provided by the present invention.

[0093] Fig.11 It is a front view of the adjustable repair mechanism provided by the present invention.

[0094] Fig.12 It is a side view of the adjustable repair mechanism provided by the present invention.

[0095] Fig.13 It is a structural schematic diagram of the auxiliary turning mechanism provided by the present invention.

[0096] Fig.14 It is a three-dimensional structural schematic diagram of the auxiliary turning mechanism provided by the present invention.

[0097] Fig.15 It is a front view of the auxiliary turning mechanism provided by the present invention.

[0098] Fig.16 It is a structural schematic diagram of the auxiliary turning part provided by the present invention. DETAILED DESCRIPTION

[0099] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order.

[0100] It should be noted that in the embodiment of the present invention, the workpiece 7 to be repaired based on 3D printing can be aerospace, automobile manufacturing, mechanical manufacturing, and electronic manufacturing parts, such as engines, turbine blades, gearboxes, bearings, gears, molds, circuit boards and other multi-specification special-shaped parts.

[0101] The embodiment of the present invention provides a comparative parts repair device based on 3D printing, such as Figure 1-Figure 4 As shown, the comparative part repair device based on 3D printing includes:

[0102] A device support frame 1, the device support frame 1 comprises a device base 11 and a support stand 12 fixedly mounted on the device base 11;

[0103] In this embodiment, the device base 11 and the support stand 12 can be fixedly connected by mortise and tenon, riveting or welding. The device base 11 can be a "T"-shaped seat or a rectangular seat, and the support stand 12 can also be a "T"-shaped seat or a rectangular seat.

[0104] A parts fixing mechanism 2, wherein the parts fixing mechanism 2 is arranged on the supporting seat 12, and the parts fixing mechanism 2 is used to clamp the workpiece 7 to be repaired and drive the workpiece 7 to be repaired to move;

[0105] An adjustable repair mechanism 3, wherein the adjustable repair mechanism 3 is arranged on the device base 11, and the adjustable repair mechanism 3 is used for welding and repairing the workpiece 7 to be repaired;

[0106] Among them, Figure 9-12 As shown, the adjustable repair mechanism 3 includes:

[0107] At least one set of printing repair components 4, wherein the printing repair components 4 perform repair operations on the workpiece 7 to be repaired based on 3D printing;

[0108] A repair support seat 31, wherein the repair support seat 31 is slidably mounted on the device base 11, and the repair support seat 31 is used to support the printing repair component 4;

[0109] In this embodiment, the repair support seat 31 can be a circular ring or a circular frame with a hollow interior, and the repair support seat 31 is made of high-temperature resistant titanium alloy or nickel alloy.

[0110] A swing adjustment portion 32, wherein the swing adjustment portion 32 is mounted on the repair support seat 31, and the swing adjustment portion 32 is used to adjust the swing angle of the print repair component 4;

[0111] At least one group of synchronous adjustment parts 33 connected to the swing adjustment part 32 , the synchronous adjustment part 33 is also connected to the printing repair component 4 , and the synchronous adjustment part 33 is used to synchronously adjust the rotation angle of the printing repair component 4 .

[0112] When repair is in progress, the part fixing mechanism 2 is turned on, and the part fixing mechanism 2 clamps and fixes the workpiece 7 to be repaired of different specifications and models. Then the swing adjustment part 32 is turned on, and the swing adjustment part 32 drives the synchronous adjustment part 33 and the printing repair component 4 to swing. Then the synchronous adjustment part 33 is turned on, and the synchronous adjustment part 33 drives the printing repair component 4 to perform 3D printing repair on the surface defect position of the workpiece 7 to be repaired.

[0113] In the embodiment of the present invention, an adjustable repair mechanism 3 is provided, and the adjustable repair mechanism 3 consists of a printing repair component 4, a swing adjustment part 32 and a synchronous adjustment part 33. The swing adjustment part 32 cooperates with the synchronous adjustment part 33 to adaptively adjust the position and angle of the printing repair component 4, so that the printing repair component 4 can meet the needs of quickly repairing defective positions of workpieces 7 to be repaired of different specifications, thereby ensuring the accuracy of the repair. The swing adjustment part 32 cooperates with the synchronous adjustment part 33 to synchronously adjust the positions of multiple groups of printing repair components 4, so that multiple groups of printing repair components 4 can coordinate with each other, which is more efficient and faster than the repair of the prior art.

[0114] In a further preferred embodiment of the present invention, Figure 5-Figure 8 As shown, the part fixing mechanism 2 includes:

[0115] A first motor 21, wherein the first motor 21 is fixedly mounted on the support stand 12;

[0116] A fixed rotating seat 22 fixedly connected to the output shaft of the first motor 21, wherein the fixed rotating seat 22 is rotatably connected to the supporting stand 12;

[0117] The self-adjusting locking portion 23 is disposed on the fixed rotating seat 22 and is used to lock workpieces 7 to be repaired of different specifications.

[0118] In this embodiment, a repair controller can be fixedly installed on the support seat 12. The repair controller can be a PLC controller, and the repair controller is electrically connected to the first motor 21. The first motor 21 can be a single-phase asynchronous motor, and the first motor 21 is fixedly installed on the support seat 12 by fastening bolts or riveting. The output shaft of the first motor 21 is fixedly connected to the fixed rotating seat 22 by interference fit. The fixed rotating seat 22 can be a round seat or ring with a hollow interior. One side of the fixed rotating seat 22 can be fixedly connected to the support seat 12 by a bearing or a roller.

[0119] In this embodiment, the self-adjusting locking portion 23 includes:

[0120] A locking positioning plate 231, wherein the locking positioning plate 231 is fixedly connected to the fixed rotating seat 22, and at least one set of locking positioning grooves 232 is formed on the locking positioning plate 231;

[0121] In this embodiment, the locking positioning disk 231 can be a hollow disk or ring. The locking positioning grooves 232 are circumferentially arranged in the locking positioning disk 231, and the locking positioning grooves 232 can be thread grooves or card grooves. One side of the locking positioning disk 231 is fixedly connected to the fixed rotating seat 22 by a buckle or a fastening bolt.

[0122] At least one set of adjusting hollow disks 233 is rotatably mounted in the locking positioning disk 231, the adjusting hollow disks 233 are fixedly connected by disk limiting columns 234, and an adjusting toggle seat 238 is fixedly mounted on the side wall of the adjusting hollow disk 233, and a locking positioning rod 239 is internally threadedly connected to the adjusting toggle seat 238, and the locking positioning rod 239 cooperates with the locking positioning groove 232 to lock the adjusting hollow disk 233;

[0123] It should be noted that the number of the adjusting hollow disk 233 can be two groups, and the adjusting hollow disk 233 is a circular disk with a hollow interior. The two groups of the adjusting hollow disks 233 surround and form a locking groove, which is used to lock the end of the workpiece 7 to be repaired. One side of the adjusting hollow disk 233 is rotatably connected to the locking positioning disk 231 through a bearing or a roller, and the adjusting toggle seat 238 can be a rectangular seat, an "L"-shaped seat or an arc-shaped seat. The adjusting toggle seat 238 is installed on the adjusting hollow disk 233 by welding or an integrated connection. The locking positioning rod 239 can be a threaded rod, and the locking positioning rod 239 can be connected to the locking positioning groove 232 by a snap or a thread.

[0124] A positioning rotating rod 236 is rotatably installed on the locking positioning disk 231, one end of the positioning rotating rod 236 passes through the adjusting hollow disk 233, and is detachably connected with a locking limiting roller 237, and the locking limiting roller 237 is used to fix the workpiece 7 to be repaired. At least one group of limiting sleeve seats 235 is arranged in the locking positioning disk 231, and the limiting sleeve seats 235 are slidably sleeved on the positioning rotating rod 236, and the limiting sleeve seats 235 are rotatably connected to the adjusting hollow disk 233.

[0125] In this embodiment, the positioning rotating rod 236 can be an arc rod or an "L"-shaped rod structure, the number of positioning rotating rods 236 can be three groups, and one end of the positioning rotating rod 236 is rotatably connected to the locking positioning disk 231 through a bearing, and the other end of the positioning rotating rod 236 is fixedly connected to the locking limiting roller 237 through a fastening bolt or a buckle, and the locking limiting roller 237 can be a round roller, and the side wall of the locking limiting roller 237 is coated with an anti-slip material to increase the friction between the workpiece 7 to be repaired, and the limiting sleeve seat 235 is rotatably connected to the adjusting hollow disk 233 through a bearing, and the setting of the limiting sleeve seat 235 realizes the guide limit of the positioning rotating rod 236.

[0126] In the embodiment of the present invention, a self-adjusting locking portion 23 is provided, and the self-adjusting locking portion 23 is composed of a locking positioning disk 231, an adjusting hollow disk 233, a positioning rotating rod 236, and a locking limiting roller 237. The locking positioning disk 231, the adjusting hollow disk 233, the positioning rotating rod 236, and the locking limiting roller 237 cooperate with each other to lock and limit workpieces 7 to be repaired of different specifications and models, thereby avoiding the phenomenon of workpieces falling off during repair. The self-adjusting locking portion 23 cooperates with the first motor 21 to adjust the rotation position of the workpiece 7 to be repaired, thereby achieving the purpose of assisting the adjustable repair mechanism 3 to work.

[0127] In a further preferred embodiment of the present invention, Figure 1-Figure 2 As shown, the embodiment of the present invention also includes:

[0128] A mechanism displacement component 5, wherein the mechanism displacement component 5 is disposed on the device base 11 and connected to the adjustable repair mechanism 3, and the mechanism displacement component 5 is used to adjust the position of the adjustable repair mechanism 3;

[0129] Wherein, the mechanism displacement component 5 comprises:

[0130] A second motor 51, wherein the second motor 51 is fixedly mounted on the device base 11;

[0131] An adjusting screw 52 fixedly connected to the output shaft of the second motor 51, wherein one end of the adjusting screw 52 away from the second motor 51 is rotatably connected to the device base 11, and an adjusting threaded seat 53 is threadedly sleeved on the adjusting screw 52, ​​and the adjusting threaded seat 53 is detachably connected to the repair support seat 31;

[0132] At least one set of displacement guide grooves 55 is provided on the device base 11 , and a displacement guide block 54 is slidably installed in the displacement guide grooves 55 , and one side of the displacement guide block 54 is fixedly connected to the side wall of the adjusting threaded seat 53 .

[0133] In this embodiment, the second motor 51 is electrically connected to the repair controller, and the second motor 51 is fixedly installed on the device base 11 by a clamp or a fastening bolt. The output shaft of the second motor 51 is fixedly connected to one end of the adjusting screw 52 by an interference fit, and the other end of the adjusting screw 52 is rotatably connected to the device base 11 by a bearing, and the adjusting threaded seat 53 is fixedly connected to the repair supporting seat 31 by a mortise and tenon joint or a plug-in joint. Both sides of the adjusting threaded seat 53 are fixedly connected to the displacement guide block 54 by fastening bolts or welding, and the displacement guide grooves 55 are symmetrically arranged on the two side walls of the device base 11, and the displacement guide grooves 55 can be rectangular grooves or "T"-shaped grooves with polished surfaces.

[0134] In the embodiment of the present invention, a mechanism displacement assembly 5 is provided, and the setting of the mechanism displacement assembly 5 can move the adjustable repair mechanism 3 and the auxiliary turning mechanism 6 to the repair position on the surface of the workpiece 7 to be repaired, thereby facilitating the repair and turning of the workpiece 7 to be repaired.

[0135] In a further preferred embodiment of the present invention, Figure 9-12 As shown, the swing adjustment part 32 includes:

[0136] A third motor 321, wherein the third motor 321 is fixedly mounted on the repair support seat 31;

[0137] A first gear 322, wherein the first gear 322 is disposed on one side of the third motor 321, and the first gear 322 is fixedly connected to an output shaft of the third motor 321;

[0138] The first gear ring 323 is rotatably mounted in the repair support seat 31 , the outer side of the first gear ring 323 is meshed with the first gear 322 for transmission, and a plurality of drive pins 324 are circumferentially arranged on the inner side of the first gear ring 323 .

[0139] In this embodiment, the third motor 321 can be a single-phase asynchronous motor, and the third motor 321 is electrically connected to the repair controller. The third motor 321 is fixedly mounted on the repair support seat 31 by a clip or a clamp, and the output shaft of the third motor 321 is fixedly connected to the first gear 322 by an interference fit, while the first gear ring 323 is hollow inside, and the side wall of the first gear ring 323 is rotatably connected to the repair support seat 31 by a roller or a bearing, and the inner wall of the first gear 322 is circumferentially provided with a plurality of groups of conical or truncated cone-shaped drive pins 324, and the drive pins 324 are fixedly mounted by threads or clips.

[0140] At least one set of second gear rings 326, the second gear rings 326 are arranged on the inner side of the first gear rings 323, and the outer side walls of the second gear rings 326 are provided with multiple sets of helical teeth, which mesh with the driving pin shaft 324 for transmission. One side of the second gear ring 326 is fixedly connected with at least one set of arc-shaped sleeve seats 325, and the arc-shaped sleeve seats 325 are slidably installed on the arc-shaped guide seats 327, and the arc-shaped guide seats 327 are fixedly installed on the side walls of the repair support seat 31. The second gear ring 326 is also connected to the synchronous adjustment part 33.

[0141] It should be noted that the second gear ring 326 can be an arc-shaped gear ring with a notch on one side, and the helical teeth are circumferentially arranged on the outer side of the second gear ring 326 by mortise and tenon or riveting. The helical teeth cooperate with the driving pin shaft 324 to drive the second gear ring 326 to swing, thereby facilitating the synchronous adjustment of the swing angle of the synchronous adjustment part 33 and the printing repair component 4. The number of the arc-shaped sleeve seat 325 and the arc-shaped guide seat 327 are both two groups. The setting of the arc-shaped sleeve seat 325 and the arc-shaped guide seat 327 realizes the guiding and limiting of the synchronous adjustment part 33 and the printing repair component 4, and the arc-shaped guide seat 327 is fixed to the side wall of the repair support seat 31 at one end by welding or riveting.

[0142] In the embodiment of the present invention, a swing adjustment part 32 is provided. The swing adjustment part 32 is driven by the first gear ring 323, the second gear ring 326 and the driving pin shaft 324 to realize synchronous adjustment of the swing angles of multiple groups of synchronous adjustment parts 33 and the printing and repair components 4, thereby facilitating the printing and repair components 4 to repair the surface of the workpiece 7 to be repaired and collect parameter information of the workpiece 7 to be repaired.

[0143] In this embodiment, the synchronization adjustment unit 33 includes:

[0144] A third gear ring 333, the third gear ring 333 is rotatably disposed in the repair support seat 31, and the third gear ring 333 is provided with a plurality of groups of special-shaped teeth;

[0145] At least one group of second gears 332, the second gears 332 are meshed with the special-shaped teeth on the third gear ring 333 for transmission, one side of the second gear 332 is rotatably connected to a gear mounting seat 331, the side wall of the gear mounting seat 331 is fixedly connected to the end wall of the second gear ring 326, and a fourth motor is fixedly installed in any group of the gear mounting seats 331, and the output shaft of the fourth motor is fixedly connected to a group of the second gears 332.

[0146] In this embodiment, the third gear ring 333 is rotatably connected to the repair support seat 31 through bearings or rollers. The side walls of the third gear ring 333 are provided with multiple groups of special-shaped teeth. The special-shaped teeth can be fan-shaped, arc-shaped or semicircular. The provision of the special-shaped teeth facilitates the transmission of multiple groups of second gears 332, and also meets the demand for adjusting the swing angle of the second gear 332. In this embodiment, a fourth motor is fixedly installed in any group of the gear mounting seats 331. Only one group of the fourth motor is needed to synchronously drive the linkage of multiple groups of the second gears 332 and the third gear ring 333, thereby ensuring the accuracy of the repair work. It should be noted that the fourth motor can be embedded in any group of the gear mounting seats 331, and the second gear 332 is rotatably connected to the gear mounting seats 331 through bearings.

[0147] In a further preferred embodiment of the present invention, Figure 9-10 As shown, the printing repair component 4 includes:

[0148] A wire disc heating seat 41, wherein the wire disc heating seat 41 is fixedly mounted on a side wall of the second gear 332;

[0149] A printing nozzle 43 fixedly connected to the wire spool heating seat 41, wherein the printing nozzle 43 is used for printing and repairing the workpiece 7 to be repaired;

[0150] At least one set of three-dimensional scanners 45, the three-dimensional scanners 45 are fixedly mounted on the side wall of the wire disc heating seat 41, and the three-dimensional scanners 45 are used to collect the surface image of the workpiece 7 to be repaired;

[0151] The position sensor 44 is disposed on the side wall of the wire disc heating seat 41 , and the position sensor 44 is used to collect the position information of the printing nozzle 43 .

[0152] In this embodiment, the three-dimensional scanner 45 is circumferentially arranged on the outside of the print nozzle 43. The three-dimensional scanner 45 is installed by screw thread or buckle. The three-dimensional scanner 45 is equipped with a high-precision laser radar with a wavelength of 905nm, an absolute accuracy of 0.02mm, a single-point scanning time of 0.2-1s, an image resolution of 16K, and a built-in 1-inch CMOS image sensor. The position sensor 44 is fixedly installed in the wire spool heating seat 41 by buckles or fastening bolts. In this embodiment, the model of the position sensor 44 can be TLE5012BE1000.

[0153] In this embodiment, the print head 43 can be a bent circular tube, and the print head 43 can extrude the molten material accurately to the designated defect position. At the same time, the print head 43 is equipped with a high-temperature resistant high-pressure jet pump.

[0154] It should be noted that the wire spool heating seat 41 can be an arc-shaped seat with a hollow interior, and the wire spool heating seat 41 has a built-in heating resistor wire. The wire spool heating seat 41 is fixedly connected to the side wall of the second gear 332 by a buckle or a fastening bolt. The wire spool heating seat 41 stores welding wire, and the welding wire can be iron wire, alloy wire, plastic, or composite material wire required for printing materials. The wire spool heating seat 41 is also connected to a material conveying system, which is a prior art and will not be elaborated here. At the same time, in order to provide heat insulation protection for the position sensor 44 and the three-dimensional scanner 45, a heat insulation protective cover 42 is installed on one side of the wire spool heating seat 41 by a fastening bolt or a buckle.

[0155] In the embodiment of the present invention, a printing repair component 4 is provided, and the printing repair component 4 is composed of a printing nozzle 43, a three-dimensional scanner 45 and a position sensor 44. The printing nozzle 43, the three-dimensional scanner 45 and the position sensor 44 cooperate with each other to realize parameter collection of the surface irregular defect area of ​​the workpiece 7 to be repaired, thereby facilitating comparison with the standard workpiece, and then combining with 3D printing technology to perform comparative modeling on the workpiece 7 to be repaired, thereby ensuring the accuracy of defect repair.

[0156] In a further preferred embodiment of the present invention, Figure 13-Figure 15 As shown, the embodiment of the present invention also includes:

[0157] An auxiliary turning mechanism 6, wherein the auxiliary turning mechanism 6 is arranged on one side of the repair support seat 31, and the auxiliary turning mechanism 6 is used for turning the workpiece 7 to be repaired;

[0158] Wherein, the auxiliary turning mechanism 6 comprises:

[0159] A turning mounting seat 61, wherein the turning mounting seat 61 is fixedly mounted on the repair supporting seat 31;

[0160] A turning positioning seat 62 fixedly mounted on the turning mounting seat 61;

[0161] It should be noted that the turning mounting seat 61 may be a rectangular seat or a "T"-shaped seat structure, and the turning mounting seat 61 is fixedly connected to the repair support seat 31 through a clamp or a fastening bolt, and the turning positioning seat 62 may be a round roller or a square rod with a polished surface:

[0162] At least one set of auxiliary turning parts 64, wherein the auxiliary turning parts 64 are used to perform turning repair on the surface of the workpiece 7 to be repaired;

[0163] The linkage adjustment portion 63 is used for adjusting the position of the auxiliary turning portion 64 , and the linkage adjustment portion 63 is installed in the turning mounting seat 61 .

[0164] In the embodiment of the present invention, an auxiliary turning mechanism 6 is provided, and the auxiliary turning mechanism 6 is composed of an auxiliary turning part 64 and a linkage adjustment part 63. The linkage adjustment part 63 can flexibly adjust the position and angle of the auxiliary turning part 64, thereby facilitating the turning and scraping of the defective area of ​​the workpiece 7 to be repaired. The setting of the auxiliary turning part 64 can adjust the extension position of the auxiliary turning tool 645, so that the auxiliary turning tool 645 can meet the repair requirements of workpieces 7 to be repaired of different specifications.

[0165] Wherein, the linkage adjustment unit 63 includes:

[0166] An adjusting hydraulic cylinder 631, wherein the adjusting hydraulic cylinder 631 is fixedly mounted on the turning mounting seat 61, and a lifting slide 632 is fixedly connected to the telescopic end of the adjusting hydraulic cylinder 631, and the lifting slide 632 is slidably mounted on the turning positioning seat 62;

[0167] At least one set of inclined push rods 633, wherein the inclined push rods 633 are fixedly mounted on the lifting slide 632, and one end of the inclined push rods 633 is hinged with a hinge block 636;

[0168] At least one group of limiting hinge seats 634, the limiting hinge seats 634 are sleeved on the hinge block 636, and the limiting hinge seats 634 and the hinge block 636 are slidably connected, one end of the limiting hinge seat 634 is fixedly connected with a linkage adjustment arm 635, the middle part of the linkage adjustment arm 635 is rotatably connected with the turning positioning seat 62, and the end of the linkage adjustment arm 635 is installed with an auxiliary turning part 64.

[0169] In this embodiment, the adjusting hydraulic cylinder 631 is electrically connected to the repair controller, and the adjusting hydraulic cylinder 631 is fixedly mounted on the turning mounting seat 61 by tightening bolts or riveting, and the lifting slide 632 can be a round seat or a rectangular seat with a hollow interior, and the side wall of the lifting slide 632 and the inclined push rod 633 can be hinged or bolted fixedly connected, and the limit hinge seat 634 can be a rectangular seat or an arc seat with a polished inner wall. At the same time, one side of the limit hinge seat 634 is fixedly connected to the linkage adjusting arm 635 by welding or riveting, and the linkage adjusting arm 635 can be an arc arm, an "L"-shaped arm or a bent arm, and the linkage adjusting arm 635 is arranged in two groups, and the linkage adjusting arm 635 is rotatably connected to the side wall of the turning positioning seat 62 through a bearing.

[0170] like Fig.16 As shown, the auxiliary turning portion 64 includes:

[0171] A fifth motor 641, wherein the fifth motor 641 is fixedly mounted on the linkage adjustment arm 635, an output shaft of the fifth motor 641 is fixedly connected to a rotating arm 642, and a sixth motor 643 is fixedly mounted on one end of the rotating arm 642 away from the fifth motor 641;

[0172] A turning chassis 644 fixedly connected to the output shaft of the sixth motor 643, wherein at least one set of auxiliary turning tools 645 is arranged in the turning chassis 644, and one end of the auxiliary turning tool 645 is fixedly connected to a third gear 646, and the third gear 646 is rotatably mounted on the turning chassis 644;

[0173] The fourth gear 647 disposed in the turning chassis 644 is rotated, and the fourth gear 647 is meshed with the third gear 646 for transmission. A seventh motor 648 is fixedly connected to one side of the fourth gear 647. The seventh motor 648 is fixedly installed in a turning protection cover 649. The turning protection cover 649 is detachably installed on the turning chassis 644.

[0174] In this embodiment, the fifth motor 641, the sixth motor 643, and the seventh motor 648 are connected to the repair controller in communication, the fifth motor 641 is fixedly mounted on the end of the linkage adjustment arm 635 by a clamp, the output shaft of the fifth motor 641 is fixedly connected to the rotating arm 642 by an interference fit, the sixth motor 643 is fixedly mounted on the end of the rotating arm 642 by a mortise or rivet, and the turning chassis 644 can be a hollow disk or round seat, and the third gear 646 is connected by a rotating shaft or shaft. The bearing is rotatably connected to the side wall of the turning chassis 644, and one side of the third gear 646 is fixedly connected to the auxiliary turning tool 645 by welding or mortise and tenon joint. The auxiliary turning tool 645 can be made of titanium alloy or nickel alloy. The shape of the auxiliary turning tool 645 can be arc-shaped, fan-shaped or diamond-shaped. The number of auxiliary turning tools 645 can be 2-12 groups. The seventh motor 648 is fixedly installed on the turning protection cover 649 by fastening bolts, and the turning protection cover 649 is fixedly connected to the turning chassis 644 by multiple groups of pins or buckles.

[0175] On the other hand, an embodiment of the present invention further provides a comparative part repair method based on 3D printing, and the comparative part repair method based on 3D printing specifically includes:

[0176] Step S10, before repairing the workpiece 7 to be repaired, one end of the workpiece 7 to be repaired is inserted into the adjusting hollow disk 233 manually or by a robot, and then the adjusting toggle seat 238 is manually rotated, and the adjusting toggle seat 238 drives the adjusting hollow disk 233 to rotate, so that the adjusting hollow disk 233 drives the limiting sleeve seat 235 to rotate, and the adjusting sleeve seat drives the positioning rotating rod 236 and the locking limiting roller 237 to rotate, so that the multiple groups of the locking limiting rollers 237 fix the end of the workpiece 7 to be repaired.

[0177] Step S20, during operation, after the repair workpiece 7 is fixed, the repair controller controls the second motor 51 to start, the second motor 51 drives the adjusting screw 52 to rotate, the adjusting screw 52 drives the adjusting threaded seat 53 and the repair supporting seat 31 to move, so that the repair supporting seat 31 drives the auxiliary turning mechanism 6 and the printing repair component 4 to move to the repair station.

[0178] Step S30, before repairing, start the regulating hydraulic cylinder 631, the regulating hydraulic cylinder 631 starts to drive the lifting slide 632 to slide along the turning positioning seat 62, so that the lifting slide 632 pushes the inclined push rod 633 to move, and the inclined push rod 633 drives the hinge block 636 to move in the limit hinge seat 634, thereby driving the limit hinge seat 634 and the linkage regulating arm 635 to swing, and then start the fifth motor 641, the fifth motor 641 drives the rotating arm 642 to rotate, so that the rotating arm 642 drives the sixth The motor 643 and the auxiliary turning tool 645 rotate, and then the seventh motor 648 is turned on according to the specifications of the workpiece 7 to be repaired. The seventh motor 648 starts to drive the fourth gear 647 to rotate, and the fourth gear 647 drives the third gear 646 to rotate, so that the third gear 646 drives the auxiliary turning tool 645 to rotate, thereby adjusting the position of the auxiliary turning tool 645, and then the sixth motor 643 is turned on to drive the turning chassis 644 and the auxiliary turning tool 645 to grind the defective area of ​​the workpiece 7 to be repaired.

[0179] Step S40, when collecting parameter information of the workpiece 7 to be repaired after turning, turn on the first motor 21, the first motor 21 controls the fixed rotating seat 22, the locking positioning disk 231, the adjusting hollow disk 233, the locking positioning roller and the workpiece 7 to be repaired to rotate, and then turn on the third motor 321, the third motor 321 starts to drive the first gear 322 and the first gear ring 323 to rotate, the first gear ring 323 drives the driving pin 324 and the second gear ring 326 to rotate, so that the second gear ring 326 drives the second gear 332, the gear mounting seat 331 and the printing and repairing component 4 to swing, and then turn on the fourth motor, the fourth motor starts to drive a group of second gears 332 to rotate, the second gear 332 drives the third gear ring 333 to rotate, so that the third gear ring 333 drives the remaining two groups of second gears 332 to rotate, so that the second gear 332 drives the printing and repairing component 4 to rotate, so as to adjust the rotation angle of the printing and repairing component 4, and then turn on the three-dimensional scanner 45 and the position sensor 44 in the printing and repairing component 4 to collect parameter information of the workpiece 7 to be repaired.

[0180] Step S50, obtaining parameter information of the workpiece 7 to be repaired after turning, traversing the workpiece model library, retrieving standard workpiece parameter information in the pre-built workpiece model library based on the parameter information of the workpiece 7 to be repaired, and building a standard workpiece model using a three-dimensional modeling tool;

[0181] It should be noted that the workpiece model library can be constructed through the UGNX Part-families tool or Excel worksheet, which can easily define the main parameters of the parts and generate a serialized parts database. When needed, the part model of the required specifications can be directly called from the library. At the same time, with the continuous iteration and optimization of the design, the models in the model library need to be updated regularly to ensure that they reflect the latest design standards and technical requirements.

[0182] It should be noted that, in this embodiment, the parameter information of the workpiece 7 to be repaired after turning includes but is not limited to the defect image information of the workpiece 7 to be repaired, the video information of the workpiece 7 to be repaired, the printing accuracy of the workpiece 7 to be repaired, the printing speed of the workpiece 7 to be repaired, the defect depth, the defect size, the defect surface roughness, and the specification and model information of the workpiece 7 to be repaired.

[0183] Step S60, taking the parameter information of the workpiece 7 to be repaired as input, executing the pre-trained defect generation model, generating a workpiece defect model, rendering the workpiece defect model to a standard workpiece model, calculating the optimal path of the print nozzle 43 based on 3D printing technology, and generating a nozzle path code;

[0184] Step S70, load the nozzle path code, parse the control instructions of the nozzle path code, and the repair controller starts the first motor 21, the first motor 21 controls the fixed rotating seat 22, the locking positioning disk 231, the adjusting hollow disk 233, the locking positioning roller and the workpiece 7 to be repaired to rotate, and then starts the third motor 321, the third motor 321 starts to drive the first gear 322 and the first gear ring 323 to rotate, the first gear ring 323 drives the driving pin 324 and the second gear ring 326 to rotate, so that the second gear ring 326 drives the second gear 332, the gear mounting seat 331 and the printing repair component 4 to swing, and then starts the fourth motor, the fourth motor starts to drive a group of second gears 332 to rotate, the second gear 332 drives the third gear ring 333 to rotate, so that the third gear ring 333 drives the remaining two groups of second gears 332 to rotate, so that the second gear 332 drives the printing repair component 4 to rotate, so as to adjust the rotation angle of the printing repair component 4, and then starts the wire disk heating seat 41 and the printing nozzle in the printing repair component 4 to repair the surface defects of the workpiece 7 to be repaired.

[0185] In an embodiment of the present invention, a comparative part repair method based on 3D printing is provided. The method generates a workpiece defect model through a pre-trained defect generation model, and then renders the workpiece defect model to a standard workpiece model, thereby ensuring the accuracy of 3D printing. At the same time, when generating the workpiece defect model, the defect generation model can calculate the integrity of the workpiece defect model, obtain the model integrity value, and judge the model integrity value, thereby ensuring the effectiveness of the workpiece repair path and instructions, which is more accurate and effective than the existing modeling methods.

[0186] In a further preferred embodiment of the present invention, a method for executing a pre-trained defect generation model to generate a workpiece defect model is also provided. The method for executing a pre-trained defect generation model to generate a workpiece defect model specifically includes:

[0187] Step S101, loading parameter information of the workpiece 7 to be repaired after turning, normalizing the parameter information of the workpiece 7 to be repaired after turning, and obtaining normalized parameter data;

[0188] In this embodiment, the normalization method for the parameter information of the workpiece 7 to be repaired after turning includes but is not limited to Min-Max normalization, Z-score normalization, decimal place normalization and dimensionality reduction decomposition processing.

[0189] Step S102, obtaining normalized parameter data, comparing with standard workpiece model coordinate data, identifying abnormal data in the normalized parameter data, and generating an abnormal node set based on the abnormal data;

[0190] Step S103, taking the abnormal node set as input, executing the defect generation model to obtain the workpiece defect model, the defect generation model calculates the integrity of the workpiece defect model to obtain the model integrity value;

[0191] The complete value of the model is calculated by formula (1):

[0192]

[0193] Among them, W is the complete value of the model, n is the number of abnormal nodes, (x m ,y m ,z m ) is the three-dimensional coordinate parameter of the abnormal point m, f(m) is the weight coefficient of the abnormal node, c is the Gaussian surround function scale of the defect generation model, in this embodiment, the Gaussian surround function scale can be 0.1-0.8, and g is the defect coefficient of the abnormal point m, α is the coupling coefficient of the defect generation model, in this embodiment, the coupling coefficient of the defect generation model can be 0.15 or 0.2;

[0194]

[0195] Among them, f(m) is the weight coefficient of the abnormal node, (x m ,y m ,z m ) is the three-dimensional coordinate parameter of the outlier point m, and U m is the model defect volume, L m is the model node connection length, β is the model transformation amplitude;

[0196]

[0197] Among them, g is the defect coefficient of abnormal point m, (x m ,y m ,z m) is the three-dimensional coordinate parameter of the outlier point m, ω is the state normalized variable value of the outlier point m, and the state normalized variable value is obtained by dimensionality reduction processing of normalized parameter data.

[0198] Step S104, determining whether the model integrity value is greater than a preset integrity threshold;

[0199] In this embodiment, the preset complete threshold is 0.95-1.

[0200] Step S105, if it is greater than the preset complete threshold, output the workpiece defect model;

[0201] Step S106, if it is less than the preset complete threshold, return to step S103, the defect generation model optimizes and adjusts the workpiece defect model until it meets the rule of being greater than the preset complete threshold, and outputs the workpiece defect model.

[0202] In this embodiment, the defect generation model is constructed and trained based on deep learning and support vector machines. The defect generation model includes an input layer, an encoder, a resampling layer, an embedding transformation layer and a multi-layer convolution layer. The input layer, the encoder, the resampling layer, the embedding transformation layer and the multi-layer convolution layer are connected in sequence. At the same time, in this embodiment, when a three-dimensional modeling tool is used to construct a standard workpiece model, the three-dimensional modeling tool includes but is not limited to TinkerCAD, 3DSlash, 123-Design, Sketchup, Sculptris, Meshmixer, and Blender.

[0203] In summary, the present invention provides a comparative part repair device and method based on 3D printing. When the repair is in progress, the part fixing mechanism 2 is turned on, and the part fixing mechanism 2 clamps and fixes the workpiece 7 to be repaired of different specifications and models, and then the swing adjustment part 32 is turned on, and the swing adjustment part 32 drives the synchronous adjustment part 33 and the printing repair component 4 to swing, and then the synchronous adjustment part 33 is turned on, and the synchronous adjustment part 33 drives the printing repair component 4 to perform 3D printing repair on the surface defect position of the workpiece 7 to be repaired.

[0204] In the embodiment of the present invention, an adjustable repair mechanism 3 is provided, and the adjustable repair mechanism 3 consists of a printing repair component 4, a swing adjustment part 32 and a synchronous adjustment part 33. The swing adjustment part 32 cooperates with the synchronous adjustment part 33 to adaptively adjust the position and angle of the printing repair component 4, so that the printing repair component 4 can meet the needs of quickly repairing defective positions of workpieces 7 to be repaired of different specifications, thereby ensuring the accuracy of the repair. The swing adjustment part 32 cooperates with the synchronous adjustment part 33 to synchronously adjust the positions of multiple groups of printing repair components 4, so that multiple groups of printing repair components 4 can coordinate with each other, which is more efficient and faster than the repair of the prior art.

[0205] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A 3D printing-based contrast type parts repair device, the 3D printing-based contrast type parts repair device comprising: A device support frame, the device support frame comprising a device base and a support stand fixedly mounted on the device base; A parts fixing mechanism, the parts fixing mechanism is arranged on the supporting stand, and the parts fixing mechanism is used to clamp the workpiece to be repaired and drive the workpiece to be repaired to move; The adjustable repair mechanism is characterized in that the adjustable repair mechanism is arranged on the device base, and the adjustable repair mechanism is used to perform welding repair on the workpiece to be repaired; Wherein, the adjustable repair mechanism comprises: At least one set of printing repair components, wherein the printing repair components perform repair operations on the workpiece to be repaired based on 3D printing; A repair support seat, the repair support seat is slidably mounted on the device base, and the repair support seat is used to support the printing repair component; A swing adjustment part, the swing adjustment part is installed on the repair support seat, and the swing adjustment part is used to adjust the swing angle of the print repair component; At least one set of synchronous adjustment parts connected to the swing adjustment part, the synchronous adjustment parts are also connected to the print repair component, and the synchronous adjustment parts are used to synchronously adjust the rotation angle of the print repair component; The parts fixing mechanism comprises: A first motor, wherein the first motor is fixedly mounted on the supporting stand; A fixed rotating seat fixedly connected to the output shaft of the first motor, wherein the fixed rotating seat is rotationally connected to the supporting stand; A self-adjusting locking part, which is arranged on the fixed rotating seat and is used to lock workpieces to be repaired of different specifications; The swing adjustment unit comprises: A third motor, the third motor is fixedly mounted on the repair support seat; A first gear, which is disposed on one side of the third motor and is fixedly connected to an output shaft of the third motor; A first gear ring is rotatably mounted in the repair support seat, the outer side of the first gear ring is meshed with the first gear for transmission, and a plurality of groups of driving pins are circumferentially arranged on the inner side of the first gear ring; At least one set of second gear rings, the second gear rings are arranged inside the first gear rings, and the outer side walls of the second gear rings are provided with multiple sets of helical teeth, the helical teeth are meshed with the driving pin shaft for transmission, one side of the second gear ring is fixedly connected with at least one set of arc-shaped sleeve seats, the arc-shaped sleeve seats are slidably mounted on the arc-shaped guide seats, the arc-shaped guide seats are fixedly mounted on the side walls of the repair support seat, and the second gear ring is also connected to the synchronous adjustment part; The synchronization adjustment unit includes: A third gear ring, the third gear ring is rotatably disposed in the repair support seat, and the third gear ring is provided with a plurality of groups of special-shaped teeth; At least one set of second gears, the second gears are meshed with the special-shaped teeth on the third gear ring for transmission, one side of the second gear is rotatably connected to a gear mounting seat, the side wall of the gear mounting seat is fixedly connected to the end wall of the second gear ring, and a fourth motor is fixedly installed in any set of the gear mounting seats, and the output shaft of the fourth motor is fixedly connected to a set of the second gears; The print repair component comprises: A wire disc heating seat, wherein the wire disc heating seat is fixedly mounted on a side wall of the second gear; A printing nozzle fixedly connected to the wire spool heating seat, the printing nozzle is used to print and repair the workpiece to be repaired; At least one set of three-dimensional scanners, the three-dimensional scanners are fixedly mounted on the side wall of the wire disc heating seat, and the three-dimensional scanners are used to collect the surface image of the workpiece to be repaired; A position sensor is arranged on the side wall of the wire spool heating seat, and the position sensor is used to collect position information of the printing nozzle.

2. The 3D printing-based contrast part repair device according to claim 1, characterized in that: The self-adjusting locking portion comprises: A locking positioning plate, the locking positioning plate is fixedly connected between the fixed rotating seats, and at least one group of locking positioning grooves is formed on the locking positioning plate; At least one set of adjusting hollow disks is rotatably mounted in the locking positioning disk, the adjusting hollow disks are fixedly connected by disk limiting columns, and an adjusting toggle seat is fixedly mounted on the side wall of the adjusting hollow disk, and a locking positioning rod is threadedly connected to the adjusting toggle seat, and the locking positioning rod cooperates with the locking positioning groove to lock the adjusting hollow disk; A positioning rotating rod rotatably installed on the locking positioning disk, one end of the positioning rotating rod passes through the adjusting hollow disk and is detachably connected to a locking limiting roller, the locking limiting roller is used to fix the workpiece to be repaired, and at least one group of limiting sleeve seats is arranged in the locking positioning disk, the limiting sleeve seat is slidably sleeved on the positioning rotating rod, and the limiting sleeve seat is rotatably connected to the adjusting hollow disk.

3. The 3D printing-based contrast part repair device according to claim 2, characterized in that: Also includes: A mechanism displacement component, the mechanism displacement component is arranged on the device base, and the mechanism displacement component is connected to the adjustable repair mechanism, and the mechanism displacement component is used to adjust the position of the adjustable repair mechanism; Wherein, the mechanism displacement component comprises: a second motor, the second motor being fixedly mounted on the device base; An adjusting screw fixedly connected to the output shaft of the second motor, wherein one end of the adjusting screw away from the second motor is rotatably connected to the device base, and an adjusting threaded seat is provided on the threaded sleeve of the adjusting screw, and the adjusting threaded seat is detachably connected to the repair support seat; At least one set of displacement guide grooves is provided on the device base, and a displacement guide block is slidably installed in the displacement guide groove, and one side of the displacement guide block is fixedly connected to the side wall of the adjusting threaded seat.

4. The 3D printing-based contrast part repair device according to any one of claims 1 to 3, characterized in that: Also includes: An auxiliary turning mechanism, which is arranged on one side of the repair support seat and is used for turning the workpiece to be repaired; Wherein, the auxiliary turning mechanism comprises: A turning mounting seat, wherein the turning mounting seat is fixedly mounted on the repair supporting seat; A turning positioning seat fixedly mounted on the turning mounting seat; At least one set of auxiliary turning parts, wherein the auxiliary turning parts are used to perform turning repair on the surface of the workpiece to be repaired; A linkage adjustment portion for adjusting the position of the auxiliary turning portion, wherein the linkage adjustment portion is installed in the turning mounting seat; Wherein, the linkage adjustment unit comprises: An adjusting hydraulic cylinder, wherein the adjusting hydraulic cylinder is fixedly mounted on the turning mounting seat, and a telescopic end of the adjusting hydraulic cylinder is fixedly connected to a lifting slide, and the lifting slide is slidably mounted on the turning positioning seat; At least one set of inclined push rods, wherein the inclined push rods are fixedly mounted on the lifting slide, and one end of the inclined push rods is hinged with a hinge block; At least one set of position-limiting hinge seats, the position-limiting hinge seats are sleeved on the hinge block, and the position-limiting hinge seats are slidably connected to the hinge block, one end of the position-limiting hinge seat is fixedly connected to a linkage adjustment arm, the middle part of the linkage adjustment arm is rotatably connected to the turning positioning seat, and the end of the linkage adjustment arm is installed with an auxiliary turning part; The auxiliary turning part comprises: a fifth motor, wherein the fifth motor is fixedly mounted on the linkage adjustment arm, an output shaft of the fifth motor is fixedly connected to a rotating arm, and a sixth motor is fixedly mounted on one end of the rotating arm away from the fifth motor; A turning chassis fixedly connected to the output shaft of the sixth motor, wherein at least one set of auxiliary turning tools is arranged in the turning chassis, and one end of the auxiliary turning tool is fixedly connected to a third gear, and the third gear is rotatably mounted on the turning chassis; The fourth gear arranged in the turning chassis is rotated, and the fourth gear is meshed with the third gear for transmission. A seventh motor is fixedly connected to one side of the fourth gear, and the seventh motor is fixedly installed in the turning protection cover. The turning protection cover is detachably installed on the turning chassis.

5. A method for repairing contrasting parts based on 3D printing, implemented based on the device for repairing contrasting parts based on 3D printing according to any one of claims 1 to 4, characterized in that: The comparative parts repair method based on 3D printing specifically includes: Step S10, before repairing the workpiece to be repaired, one end of the workpiece to be repaired is inserted into the adjusting hollow disk manually or by a robot, and then the adjusting toggle seat is manually rotated, the adjusting toggle seat drives the adjusting hollow disk to rotate, so that the adjusting hollow disk drives the limiting sleeve seat to rotate, and the adjusting sleeve seat drives the positioning rotating rod and the locking limiting roller to rotate, so that the multiple groups of the locking limiting rollers fix the end of the workpiece to be repaired; Step S20, during operation, after the workpiece to be repaired is fixed, the repair controller controls the second motor to start, the second motor drives the adjusting screw to rotate, the adjusting screw drives the adjusting thread seat and the repair support seat to move, so that the repair support seat drives the auxiliary turning mechanism and the printing repair component to move to the repair station; Step S30, before repairing, start the adjusting hydraulic cylinder, the adjusting hydraulic cylinder starts to drive the lifting slide to slide along the turning positioning seat, so that the lifting slide pushes the inclined push rod to move, the inclined push rod drives the hinge block to move in the limit hinge seat, and then drives the limit hinge seat and the linkage adjusting arm to swing, and then start the fifth motor, the fifth motor drives the rotating arm to rotate, so that the rotating arm drives the sixth motor and the auxiliary turning tool to rotate, and then start the seventh motor according to the specifications of the workpiece to be repaired, the seventh motor starts to drive the fourth gear to rotate, the fourth gear drives the third gear to rotate, so that the third gear drives the auxiliary turning tool to rotate, so as to adjust the position of the auxiliary turning tool, and then start the sixth motor to drive the turning chassis and the auxiliary turning tool to grind the defective area of ​​the workpiece to be repaired; Step S40, when collecting parameter information of the workpiece to be repaired after turning, turn on the first motor, the first motor controls the fixed rotating seat, the locking positioning disk, the adjusting hollow disk, the locking positioning roller and the workpiece to be repaired to rotate, and then turn on the third motor, the third motor starts to drive the first gear and the first gear ring to rotate, the first gear ring drives the driving pin and the second gear ring to rotate, so that the second gear ring drives the second gear, the gear mounting seat and the printing repair component to swing, and then turn on the fourth motor, the fourth motor starts to drive a group of second gears to rotate, the second gear drives the third gear ring to rotate, so that the third gear ring drives the remaining two groups of second gears to rotate, so that the second gear drives the printing repair component to rotate, so as to adjust the rotation angle of the printing repair component, and then turn on the three-dimensional scanner and the position sensor in the printing repair component to collect parameter information of the workpiece to be repaired; Step S50, obtaining parameter information of the workpiece to be repaired after turning, traversing the workpiece model library, retrieving standard workpiece parameter information in the pre-built workpiece model library based on the parameter information of the workpiece to be repaired, and building a standard workpiece model using a three-dimensional modeling tool; Step S60, taking the parameter information of the workpiece to be repaired as input, executing the pre-trained defect generation model, generating a workpiece defect model, rendering the workpiece defect model to a standard workpiece model, calculating the optimal path of the print head based on 3D printing technology, and generating a print head path code; Step S70, load the nozzle path code, parse the control instructions of the nozzle path code, and the repair controller starts the first motor. The first motor controls the fixed rotating seat, the locking positioning disk, the adjusting hollow disk, the locking positioning roller and the workpiece to be repaired to rotate, and then turns on the third motor. The third motor starts to drive the first gear and the first gear ring to rotate. The first gear ring drives the driving pin and the second gear ring to rotate, so that the second gear ring drives the second gear, the gear mounting seat and the printing repair component to swing, and then turns on the fourth motor. The fourth motor starts to drive a group of second gears to rotate, and the second gear drives the third gear ring to rotate, so that the third gear ring drives the remaining two groups of second gears to rotate, so that the second gear drives the printing repair component to rotate, so as to adjust the rotation angle of the printing repair component, and then turns on the wire disk heating seat and the printing nozzle in the printing repair component to repair the surface defects of the workpiece to be repaired.

6. The comparative parts repair method based on 3D printing according to claim 5, characterized in that: The method of executing the pre-trained defect generation model to generate a workpiece defect model specifically includes: Loading parameter information of the workpiece to be repaired after turning, normalizing the parameter information of the workpiece to be repaired after turning, and obtaining normalized parameter data; Acquire normalized parameter data, compare with standard workpiece model coordinate data, identify abnormal data in the normalized parameter data, and generate an abnormal node set based on the abnormal data; Taking the abnormal node set as input, executing the defect generation model, obtaining the workpiece defect model, the defect generation model calculates the integrity of the workpiece defect model, and obtains the model integrity value; The complete value of the model is calculated by formula (1): Among them, W is the complete value of the model, n is the number of abnormal nodes, (x m ,y m ,z m ) is the three-dimensional coordinate parameter of the abnormal point m, f(m) is the weight coefficient of the abnormal node, c is the Gaussian surround function scale of the defect generation model, and g is the defect coefficient of the abnormal point m, α is the coupling coefficient of the defect generation model; Among them, f(m) is the weight coefficient of the abnormal node, (x m ,y m ,z m ) is the three-dimensional coordinate parameter of the outlier point m, and U m is the model defect volume, L m is the model node connection length, β is the model transformation amplitude; Among them, g is the defect coefficient of abnormal point m, (x m ,y m ,z m ) is the three-dimensional coordinate parameter of the outlier point m, ω is the state normalized variable value of the outlier point m; Determine whether the model integrity value is greater than the preset integrity threshold. If it is greater than the preset integrity threshold, the workpiece defect model is output. If it is less than the preset integrity threshold, the defect generation model optimizes and adjusts the workpiece defect model until it meets the rule of being greater than the preset integrity threshold and outputs the workpiece defect model.

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