Ultrasonic-assisted laser cladding equipment

Abstract

The invention discloses ultrasonic-assisted laser cladding equipment, and relates to the technical field of laser cladding, the ultrasonic-assisted laser cladding equipment comprises a mounting table, a pair of overturning rotation mechanisms and a cladding forging and pressing mechanism, the overturning rotation mechanisms are arranged above the mounting table in a bilateral symmetry mode, and each overturning rotation mechanism comprises a first motor; the first motor rotates forwards and drives the clamped crankshaft to turn over around the central axis of a connecting rod journal of the crankshaft, and the first motor rotates reversely and drives the crankshaft of the cross arm to rotate around the central axis of a main journal of the crankshaft; the cladding forging and pressing mechanism is arranged above the pair of overturning rotation mechanisms and comprises a second motor, a laser cladding head and an ultrasonic forging and pressing head, the second motor drives the laser cladding head and the ultrasonic forging and pressing head to move in the axial direction of the crankshaft, laser cladding is conducted on the surface of the connecting rod journal through the laser cladding head, and a cladding layer is formed; and the cladding layer subjected to electromagnetic induction heating is subjected to ultrasonic-assisted forging and pressing through an ultrasonic forging and pressing head. The device has the characteristics of being reasonable in scheme design and ingenious and compact in structure.

Description

Technical Field

[0001] The invention relates to the technical field of laser cladding, and in particular to an ultrasonic-assisted laser cladding device. Background Art

[0002] Laser Cladding, also known as laser melting or laser cladding, is a new surface modification technology. It forms a metallurgically bonded cladding layer on the surface of the base by adding cladding material to the surface of the base material and using a high-energy-density laser beam to melt it together with a thin layer on the surface of the base material.

[0003] At present, when laser cladding is used to repair the connecting rod journal of a crankshaft, the rapid heating of the laser beam causes the metal powder to melt completely, and the heat does not have time to be transferred, so that the temperature of the substrate is much lower than that of the cladding layer, which creates a large temperature gradient between the cladding layer and the substrate material. In the subsequent rapid solidification process, it is impossible to have enough liquid to replenish it. The resulting temperature gradient difference and the difference in thermal expansion coefficient between the cladding material and the base material cause the cladding layer and the substrate to shrink inconsistently. In general, the shrinkage rate of the cladding layer is greater than that of the substrate material. The cladding layer is constrained by the surrounding environment (cold substrate), so residual tensile stress is formed in the cladding layer. In addition, solid metal will also cause tissue stress due to phase transformation during the cooling process.

[0004] When the superposition of the above stresses exceeds the strength limit of the material, cracks will occur in weak parts of the workpiece such as pores and slag inclusions. The residual stress generated during the laser cladding process is the root cause of cracks in the cladding layer. Therefore, reducing or eliminating the residual stress during the cladding process is the main method to inhibit cracks in the laser cladding layer.

[0005] Therefore, how to develop efficient and reliable stress homogenization technology in the micro-area of ​​the laser molten pool by regulating the stress field of the cladding layer is the key and effective way to solve the problem of laser cladding cracks. Summary of the invention

[0006] The purpose of the present invention is to provide an ultrasonic assisted laser cladding device to solve the above-mentioned defects caused by the prior art.

[0007] An ultrasonic-assisted laser cladding device comprises a mounting platform, a flipping and rotating mechanism and a cladding and forging mechanism, wherein: The flipping and rotating mechanism is provided with a pair of flipping and rotating mechanisms and is symmetrically arranged above the mounting platform. The flipping and rotating mechanism includes a motor 1, which rotates forward and drives the clamped crankshaft to flip around the central axis of its connecting rod journal, and rotates reversely and drives the crankshaft of the cross arm to rotate around the central axis of its main journal. The cladding and forging mechanism is arranged above the pair of flipping and rotating mechanisms and includes a second motor, a laser cladding head and an ultrasonic forging head. The second motor drives the laser cladding head and the ultrasonic forging head to move along the axial direction of the crankshaft, and the laser cladding head performs laser cladding on the surface of the connecting rod journal to form a cladding layer. The ultrasonic forging head also performs ultrasonic assisted forging on the cladding layer after electromagnetic induction heating.

[0008] Preferably, the flipping and rotating mechanism also includes a mounting plate, a cylinder 1 and a side mounting plate, the mounting plate being vertically mounted on the upper side of the mounting platform, the motor 1 being horizontally mounted on the upper part of the mounting plate, and being keyed to a gear 1 at its output end, the cylinder 1 being horizontally mounted on the middle part of the mounting plate, and being rotatably connected to a connecting block at the end of its piston rod, two steel wire ropes being connected to the center of the connecting block, the side mounting plate being located parallel to the side of the mounting plate and being vertically mounted on the upper side of the mounting platform, the middle part of the side mounting plate being rotatably connected to a rotating tube, and being connected to a gear 2 at the outer end of the rotating tube through a one-way bearing 1, the gear 2 and the gear 1 being meshed with each other, a clamping block 1 being welded to the inner end of the rotating tube, and a clamping block 2 being movably provided below the clamping block 1, and the two steel wire ropes being jointly passed through the rotating tube and respectively passed through the front and rear sides of the clamping block 1 and the clamping block 2.

[0009] Preferably, the lower part of the side mounting plate is rotatably connected to a rotating shaft, and a gear three is connected to the outer end of the rotating shaft through a one-way bearing two, the gear three and the gear two are meshed with each other, and the inner end key of the rotating shaft is connected to a friction wheel.

[0010] Preferably, the cladding forging mechanism also includes a mounting box, a lead screw, a movable frame and a second cylinder, the mounting box is provided with a pair and is symmetrically distributed on the left and right, the mounting box is installed above the mounting plate and the side mounting plate on the same side, the second motor is provided with a pair and is symmetrically distributed on the left and right, the second motor is horizontally installed in the middle of the mounting box on the same side, and a gear four is keyed at its output end, the lead screw is provided with a pair and is parallelly connected to the left and right mounting boxes, both ends of the lead screw are keyed with a gear five, the gear five and the adjacent gear four are meshed with each other, the movable frame is a "earth"-shaped structure and is connected to the two lead screws through a pair of lead screw nuts, a guide rail one is vertically connected in the middle of the movable frame, and a slider one is slidably connected on the guide rail one, a slide plate one is vertically connected to the side of the slide plate one, the second cylinder is vertically installed on the movable frame through a fixed plate, and a C-shaped movable plate is connected at the end of its piston rod, the movable plate is vertically connected to the upper part of the slide plate one, and the laser cladding head is vertically installed on the slide plate one downward.

[0011] Preferably, a pair of guide rails 2 are symmetrically connected to the lower part of the movable frame in front and back directions, and a slider 2 is slidably connected to the guide rails 2, an L-shaped slide plate 2 is connected to the side of the slide plate 2, and a hinge bar is hinged between the slide plate 2 and the slide plate 1, an inverted "2"-shaped copper coil is provided below the slide plate 2, the copper coil is installed on the slide plate 2 through an insulating plate, and the upper end of the copper coil is electrically connected to a power line, a pair of connecting columns are connected in parallel to the outer side of the copper coil, and a sliding frame is slidably connected to the pair of connecting columns, a transformer is coaxially connected to the sliding frame, and a transducer is coaxially connected to the inner end of the transformer, and the ultrasonic forging head is coaxially connected to the inner end of the transducer.

[0012] Preferably, a rubber pad 1 is adhered to the lower side of the clamping block 1, and a rubber pad 2 is adhered to the upper side of the clamping block 2.

[0013] Preferably, the steel wire rope is provided with a compression spring 1 between the clamping block 1 and the clamping block 2.

[0014] Preferably, a plug-in slot is provided at the lower end of the front copper coil, and a plug-in block is integrally connected to the lower end of the rear copper coil, and a gap is fitted between the plug-in block and the plug-in slot.

[0015] Preferably, the connecting column is provided with a second compression spring between the copper coil and the sliding frame.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The present invention extends the piston rod of cylinder 2 and drives the laser cladding head to approach the connecting rod journal of the crankshaft, and performs laser cladding on the surface of the connecting rod journal and forms a cladding layer through the laser cladding head. At the same time, the motor 2 drives the lead screw to rotate after being transmitted by gears 4 and 5, thereby driving the laser cladding head on the movable frame to move along the axial direction of the crankshaft. In addition, the motor 1 drives the clamped crankshaft to flip 360° around the central axis of its connecting rod journal, thereby forming a complete cladding layer on the surface of the connecting rod journal.

[0017] 2. The present invention drives the laser cladding head away from the crankshaft connecting rod journal by contracting the piston rod of cylinder 2, and drives the front and rear copper coils to be coaxially sleeved on the crankshaft connecting rod journal, and the energized copper coils are used to perform electromagnetic induction heating on the connecting rod journal and the cladding layer thereon, and then the cladding layer is ultrasonically forged by a high-frequency vibrating ultrasonic forging head to reduce or eliminate the residual stress generated during the cladding process, refine the grains of the cladding layer, and enhance the bonding effect between the cladding layer and the crankshaft connecting rod journal. In addition, the clamped crankshaft is driven by motor 1 to perform a 360° flip around the central axis of its connecting rod journal, and then the entire cladding layer is ultrasonically forged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the overall front view of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the flipping and rotating mechanism from the first perspective.

[0021] Figure 4 It is a structural schematic diagram of the overall flip rotation mechanism from the second perspective.

[0022] Figure 5 It is a schematic diagram of the structure of the overall cladding forging mechanism from the first perspective.

[0023] Figure 6 It is a schematic diagram of the structure of the overall cladding forging mechanism from the second perspective.

[0024] Figure 7 It is a schematic structural diagram of a local first-person perspective of the cladding forging mechanism.

[0025] in: 10- Mounting table; 20-flipping and self-rotating mechanism; 201-mounting plate; 202-motor 1; 203-gear 1; 204-cylinder 1; 205-connecting block; 206-wire rope; 207-side mounting plate; 208-rotating tube; 209-one-way bearing 1; 210-gear 2; 211-clamping block 1; 212-rubber pad 1; 213-clamping block 2; 214-rubber pad 2; 215-compression spring 1; 216-rotating shaft; 217-one-way bearing 2; 218-gear 3; 219-friction wheel; 30-cladding forging mechanism; 301-installation box; 302-motor 2; 303-gear 4; 304-screw; 305-gear 5; 306-movable frame; 307-screw nut; 308-guide rail 1; 309-slider 1; 310-slide plate 1; 311-cylinder 2; 312-fixed plate; 313-movable plate; 314-laser cladding head; 315-guide rail 2; 316-slider 2; 317-slide plate 2; 318-hinge bar; 319-copper coil; 319a-plug slot; 319b-plug block; 320-insulating plate; 321-power line; 322-connecting column; 323-sliding frame; 324-compression spring 2; 325-amplifier; 326-transducer; 327-ultrasonic forging head; 40-Crankshaft. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0027] like Figures 1 to 7 As shown, an ultrasonic-assisted laser cladding device includes a mounting table 10, a flipping and rotating mechanism 20, and a cladding and forging mechanism 30, wherein: The flipping and rotating mechanism 20 is provided with a pair of flipping and rotating mechanisms 20 and is symmetrically arranged above the mounting platform 10. The flipping and rotating mechanism 20 includes a motor 202, which rotates forward and drives the clamped crankshaft 40 to flip around the central axis of its connecting rod journal, and rotates reversely and drives the crankshaft 40 of the cross arm to rotate around the central axis of its main journal. The cladding and forging mechanism 30 is arranged above the pair of flipping and rotating mechanisms 20 and includes a second motor 302, a laser cladding head 314 and an ultrasonic forging head 327. The second motor 302 drives the laser cladding head 314 and the ultrasonic forging head 327 to move along the axial direction of the crankshaft 40, and the laser cladding head 314 performs laser cladding on the surface of the connecting rod journal to form a cladding layer, and the ultrasonic forging head 327 performs ultrasonic assisted forging on the cladding layer after electromagnetic induction heating.

[0028] In this embodiment, the flipping and self-rotating mechanism 20 also includes a mounting plate 201, a cylinder 204 and a side mounting plate 207. The mounting plate 201 is vertically mounted on the upper side of the mounting platform 10. The motor 202 is horizontally mounted on the upper part of the mounting plate 201, and is keyed to a gear 203 at its output end. The cylinder 204 is horizontally mounted on the middle part of the mounting plate 201, and is rotatably connected to a connecting block 205 at the end of its piston rod. Two steel wire ropes 206 are connected to the center of the connecting block 205. The side mounting plate 207 is parallel to the mounting plate 201. The side mounting plate 207 is vertically mounted on the upper side of the mounting platform 10, the middle part of the side mounting plate 207 is rotatably connected with a rotating tube 208, and the outer end of the rotating tube 208 is connected with a gear 210 through a one-way bearing 1 209, the gear 210 and the gear 1 203 are meshed with each other, the inner end of the rotating tube 208 is welded with a clamping block 1 211, and a clamping block 213 is movably provided under the clamping block 1 211, and two steel wire ropes 206 are installed together in the rotating tube 208 and are respectively installed on the front and rear sides of the clamping block 1 211 and the clamping block 213. The piston rod of cylinder 1 204 contracts and tightens the wire rope 206, thereby clamping the clamping block 1 211 and the clamping block 2 213 to the end of the crankshaft 40, and then the motor 1 202 rotates forward and drives the rotating tube 208 to rotate after being transmitted by gear 1 203 and gear 2 210, thereby driving the clamped crankshaft 40 to flip 360° around the central axis of its connecting rod journal. During this period, the one-way bearing 1 209 is in a stuck state and can transmit torque.

[0029] In this embodiment, the lower part of the side mounting plate 207 is rotatably connected with a rotating shaft 216, and a gear 3 218 is connected to the outer end of the rotating shaft 216 through a one-way bearing 217, and the gear 3 218 and the gear 2 210 are meshed with each other, and the inner end key of the rotating shaft 216 is connected with a friction wheel 219. The piston rod of the cylinder 1 204 is extended and the wire rope 206 is loosened, so that the crankshaft 40 is cross-armed on the clamping blocks 2 213 on the left and right sides, and the two ends of the crankshaft 40 are respectively in contact with the friction wheels 219 on the left and right sides, and then the motor 1 202 is reversed and driven by the gear 1 203, the gear 2 210 and the gear 3 218 to drive the rotating shaft 216 to rotate, and then drive the crankshaft 40 on the cross arm to turn 180 degrees around the central axis of its main journal. During this period, the one-way bearing 1 209 is in an active state and cannot transmit torque, and the one-way bearing 2 217 is in a stuck state and can transmit torque.

[0030] In this embodiment, the cladding forging mechanism 30 also includes a mounting box 301, a lead screw 304, a movable frame 306 and a cylinder 2 311. The mounting box 301 is provided with a pair and is symmetrically distributed on the left and right. The mounting box 301 is installed above the mounting plate 201 and the side mounting plate 207 on the same side. The motor 2 302 is provided with a pair and is symmetrically distributed on the left and right. The motor 2 302 is horizontally installed in the middle of the mounting box 301 on the same side, and a gear 4 303 is keyed to its output end. The lead screw 304 is provided with a pair and is parallelly connected to the left and right mounting boxes 301. Both ends of the lead screw 304 are keyed to gear 5 305, and the gear 5 305 is connected to the corresponding Adjacent gears 303 are meshed with each other, the moving frame 306 is a "earth"-shaped structure and is connected to the two lead screws 304 through a pair of lead screw nuts 307, a guide rail 308 is vertically connected to the middle of the moving frame 306, and a slider 309 is slidably connected to the guide rail 308, and a slide plate 310 is vertically connected to the side of the slider 309, the cylinder 2 311 is vertically upwardly installed on the moving frame 306 through a fixed plate 312, and a C-shaped moving plate 313 is connected to the end of its piston rod, the moving plate 313 is vertically connected to the upper part of the slide plate 310, and the laser cladding head 314 is vertically downwardly installed on the slide plate 310. The piston rod of cylinder two 311 is extended and drives the laser cladding head 314 to approach the connecting rod journal of the crankshaft 40, and the laser cladding head 314 performs laser cladding on the surface of the connecting rod journal and forms a cladding layer. At the same time, the motor two 302 drives the lead screw 304 to rotate after being transmitted by gear four 303 and gear five 305, thereby driving the laser cladding head 314 on the movable frame 306 to move along the axial direction of the crankshaft 40. In addition, the motor one 202 drives the clamped crankshaft 40 to flip 360° around the central axis of its connecting rod journal, thereby forming a complete cladding layer on the surface of the connecting rod journal.

[0031] In this embodiment, a pair of guide rails 315 are symmetrically connected to the lower part of the movable frame 306, and a slider 316 is slidably connected to the guide rails 315. An L-shaped slide plate 317 is connected to the side of the slide plate 316, and a hinge bar 318 is hinged between the slide plate 317 and the slide plate 310. An inverted "2"-shaped copper coil 319 is provided below the slide plate 317. The copper coil 319 is installed on the slide plate 317 through an insulating plate 320, and the upper end of the copper coil 319 is electrically connected to a power line 321. A pair of connecting columns 322 are connected in parallel to the outer side of the copper coil 319, and a sliding frame 323 is slidably connected to the pair of connecting columns 322. A transformer 325 is coaxially connected to the sliding frame 323, and a transducer 326 is coaxially connected to the inner end of the transformer 325. The ultrasonic forging head 327 is coaxially connected to the inner end of the transducer 326. The piston rod of cylinder 2 311 contracts and drives the laser cladding head 314 away from the connecting rod journal of the crankshaft 40, and at the same time drives the front and rear copper coils 319 to be coaxially sleeved on the connecting rod journal of the crankshaft 40, and the energized copper coil 319 performs electromagnetic induction heating on the connecting rod journal and the cladding layer thereon, and then the cladding layer is ultrasonically forged by the high-frequency vibrating ultrasonic forging head 327 to reduce or eliminate the residual stress generated during the cladding process, refine the grains of the cladding layer, and enhance the bonding effect between the cladding layer and the connecting rod journal of the crankshaft 40. In addition, the clamped crankshaft 40 is driven by the motor 1 202 to perform a 360° flip around the central axis of its connecting rod journal, and then the entire cladding layer is ultrasonically forged.

[0032] In this embodiment, a rubber pad 1 212 is attached to the lower side of the clamping block 1 211, and a rubber pad 214 is attached to the upper side of the clamping block 213. The rubber pad 1 212 and the rubber pad 214 can increase the friction force when clamping the crankshaft 40, and avoid leaving an indentation when clamping the crankshaft 40.

[0033] In this embodiment, the steel wire rope 206 is provided with a compression spring 1 215 between the clamping block 1 211 and the clamping block 2 213. When the steel wire rope 206 is loosened, the compression spring 1 215 can help the clamping block 1 211 and the clamping block 2 213 to separate.

[0034] In this embodiment, a plug-in slot 319a is provided at the lower end of the front copper coil 319, and a plug-in block 319b is integrally connected to the lower end of the rear copper coil 319, and the plug-in block 319b and the plug-in slot 319a are gap-matched. Through the plug-in fit between the plug-in block 319b and the plug-in slot 319a, the contact area and connection strength between the front and rear copper coils 319 can be increased, thereby ensuring that the current can flow smoothly and stably through the copper coil 319.

[0035] In this embodiment, the connecting column 322 is provided with a second compression spring 324 between the copper coil 319 and the sliding frame 323. When ultrasonically forging the cladding layer on the crankshaft 40, the second compression spring 324 allows the ultrasonic forging head 327 to be tightly pressed against the surface of the cladding layer.

[0036] The working principle of this ultrasonic assisted laser cladding equipment: S1: The crankshaft 40 to be repaired is placed horizontally on the clamping blocks 213 on the left and right sides, and the two ends of the crankshaft 40 are respectively in contact with the friction wheels 219 on the left and right sides, while ensuring that the two connecting rod journals in the middle are coaxially distributed with the left and right rotating tubes 208.

[0037] S2: The piston rod of cylinder 1 204 contracts and tightens the wire rope 206, thereby clamping the clamping block 1 211 and the clamping block 2 213 to the end of the crankshaft 40, and then the motor 1 202 rotates forward and drives the rotating tube 208 to rotate after being transmitted by gear 1 203 and gear 2 210, thereby driving the clamped crankshaft 40 to flip 360° around the central axis of its connecting rod journal. During this period, the one-way bearing 1 209 is in a stuck state and can transmit torque.

[0038] S3: The piston rod of cylinder two 311 is extended and drives the laser cladding head 314 to approach the connecting rod journal of the crankshaft 40, and the laser cladding head 314 performs laser cladding on the surface of the connecting rod journal and forms a cladding layer. At the same time, the motor two 302 drives the lead screw 304 to rotate after being transmitted by gear four 303 and gear five 305, thereby driving the laser cladding head 314 on the movable frame 306 to move along the axial direction of the crankshaft 40. In addition, the motor one 202 drives the clamped crankshaft 40 to flip 360° around the central axis of its connecting rod journal, thereby forming a complete cladding layer on the surface of the connecting rod journal.

[0039] S4: The piston rod of the second cylinder 311 is contracted and drives the laser cladding head 314 away from the connecting rod journal of the crankshaft 40, and at the same time drives the front and rear copper coils 319 to be coaxially sleeved on the connecting rod journal of the crankshaft 40, and the energized copper coil 319 is used to perform electromagnetic induction heating on the connecting rod journal and the cladding layer thereon, and then the cladding layer is ultrasonically forged by the high-frequency vibration ultrasonic forging head 327 to reduce or eliminate the residual stress generated during the cladding process, refine the grains of the cladding layer, and enhance the bonding effect between the cladding layer and the connecting rod journal of the crankshaft 40. In addition, the clamped crankshaft 40 is driven by the motor 1 202 to perform a 360° flip around the central axis of its connecting rod journal, and then the entire cladding layer is ultrasonically forged.

[0040] S5: The piston rod of the cylinder 1 204 is extended and the wire rope 206 is loosened, thereby placing the crankshaft 40 horizontally on the clamping blocks 2 213 on the left and right sides, and the two ends of the crankshaft 40 are respectively in contact with the friction wheels 219 on the left and right sides.

[0041] S6: The motor 1 202 is then reversed and driven by the gear 1 203, the gear 2 210 and the gear 3 218 to drive the rotating shaft 216 to rotate, thereby driving the crankshaft 40 of the cross arm to flip 180° around the central axis of its main journal, while ensuring that the two connecting rod journals on both sides are coaxially distributed with the left and right rotating tubes 208. During this period, the one-way bearing 1 209 is in an active state and cannot transmit torque, while the one-way bearing 2 217 is in a stuck state and can transmit torque.

[0042] S7: The piston rod of cylinder two 311 is extended and drives the laser cladding head 314 to approach the connecting rod journal of the crankshaft 40, and the laser cladding head 314 performs laser cladding on the surface of the connecting rod journal and forms a cladding layer. At the same time, the motor two 302 drives the lead screw 304 to rotate after being transmitted by gear four 303 and gear five 305, thereby driving the laser cladding head 314 on the movable frame 306 to move along the axial direction of the crankshaft 40. In addition, the motor one 202 drives the clamped crankshaft 40 to flip 360° around the central axis of its connecting rod journal, thereby forming a complete cladding layer on the surface of the connecting rod journal.

[0043] S8: The piston rod of the second cylinder 311 is contracted and drives the laser cladding head 314 away from the connecting rod journal of the crankshaft 40, and at the same time drives the front and rear copper coils 319 to be coaxially sleeved on the connecting rod journal of the crankshaft 40, and the energized copper coil 319 is used to perform electromagnetic induction heating on the connecting rod journal and the cladding layer thereon, and then the cladding layer is ultrasonically forged by the high-frequency vibration ultrasonic forging head 327 to reduce or eliminate the residual stress generated during the cladding process, refine the grains of the cladding layer, and enhance the bonding effect between the cladding layer and the connecting rod journal of the crankshaft 40. In addition, the clamped crankshaft 40 is driven by the motor 1 202 to perform a 360° flip around the central axis of its connecting rod journal, and then the entire cladding layer is ultrasonically forged.

[0044] S9: The piston rod of the cylinder 1 204 is extended and the wire rope 206 is loosened, so that the crankshaft 40 is horizontally supported on the clamping blocks 2 213 on the left and right sides, and the two ends of the crankshaft 40 are respectively in contact with the friction wheels 219 on the left and right sides, and finally the repaired crankshaft 40 is taken away.

[0045] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. An ultrasonic-assisted laser cladding device, characterized in that: It comprises a mounting platform (10), a turning and rotating mechanism (20) and a cladding and forging mechanism (30), wherein: The flipping and rotating mechanism (20) is provided with a pair of motors symmetrically arranged above the mounting platform (10), and the flipping and rotating mechanism (20) comprises a motor 1 (202), and the motor 1 (202) rotates forward to drive the clamped crankshaft (40) to flip around the central axis of its connecting rod journal, and the motor 1 (202) rotates reversely to drive the crankshaft (40) of the cross arm to rotate around the central axis of its main journal; The cladding forging mechanism (30) is arranged above the pair of flipping and rotating mechanisms (20) and comprises a second motor (302), a laser cladding head (314) and an ultrasonic forging head (327). The second motor (302) drives the laser cladding head (314) and the ultrasonic forging head (327) to move along the axial direction of the crankshaft (40), and the laser cladding head (314) performs laser cladding on the surface of the connecting rod journal to form a cladding layer, and the ultrasonic forging head (327) performs ultrasonic assisted forging on the cladding layer after electromagnetic induction heating.

2. The ultrasonic-assisted laser cladding equipment according to claim 1, characterized in that: The flipping and self-rotating mechanism (20) further comprises a mounting plate (201), a cylinder 1 (204) and a side mounting plate (207), wherein the mounting plate (201) is vertically mounted on the upper side of the mounting platform (10), the motor 1 (202) is horizontally mounted on the upper part of the mounting plate (201), and is keyed to a gear 1 (203) at its output end, the cylinder 1 (204) is horizontally mounted on the middle part of the mounting plate (201), and is rotatably connected to a connecting block (205) at the end of its piston rod, and the center of the connecting block (205) is connected to two steel wire ropes (206), and the side mounting plate (207) is parallelly located on the side of the mounting plate (201). The side mounting plate (207) is vertically mounted on the upper side of the mounting platform (10); the middle part of the side mounting plate (207) is rotatably connected to a rotating tube (208); a gear 2 (210) is connected to the outer end of the rotating tube (208) via a one-way bearing 1 (209); the gear 2 (210) and the gear 1 (203) are meshed with each other; a clamping block 1 (211) is welded to the inner end of the rotating tube (208); a clamping block 2 (213) is movably provided below the clamping block 1 (211); two steel wire ropes (206) are installed together in the rotating tube (208) and are installed on the front and rear sides of the clamping block 1 (211) and the clamping block 2 (213), respectively.

3. The ultrasonic-assisted laser cladding equipment according to claim 2, characterized in that: The lower part of the side mounting plate (207) is rotatably connected to a rotating shaft (216), and a gear three (218) is connected to the outer end of the rotating shaft (216) via a one-way bearing two (217), the gear three (218) and the gear two (210) are meshed with each other, and the inner end of the rotating shaft (216) is key-connected to a friction wheel (219).

4. The ultrasonic-assisted laser cladding equipment according to claim 2, characterized in that: The cladding forging mechanism (30) further comprises a mounting box (301), a lead screw (304), a movable frame (306) and a second cylinder (311); the mounting box (301) is provided with a pair and is symmetrically distributed on the left and right; the mounting box (301) is installed above the mounting plate (201) and the side mounting plate (207) on the same side; the second motor (302) is provided with a pair and is symmetrically distributed on the left and right; the second motor (302) is horizontally installed in the middle of the mounting box (301) on the same side, and a gear four (303) is keyed to the output end thereof; the lead screw (304) is provided with a pair and is parallelly connected to the left and right mounting boxes (301); both ends of the lead screw (304) are keyed to a gear five (305); the gear five (305) is keyed to the adjacent gears The wheels (303) are meshed with each other. The movable frame (306) is a "earth"-shaped structure and is connected to two lead screws (304) through a pair of lead screw nuts (307). A guide rail (308) is vertically connected to the middle of the movable frame (306), and a slider (309) is slidably connected to the guide rail (308). A slide plate (310) is vertically connected to the side of the slider (309). The cylinder (311) is vertically upwardly mounted on the movable frame (306) through a fixed plate (312), and a C-shaped movable plate (313) is connected to the end of its piston rod. The movable plate (313) is vertically connected to the upper part of the slide plate (310). The laser cladding head (314) is vertically downwardly mounted on the slide plate (310).

5. The ultrasonic-assisted laser cladding equipment according to claim 4, characterized in that: A pair of guide rails (315) are symmetrically connected to the lower part of the movable frame (306) at the front and rear sides, and a slider (316) is slidably connected to the guide rails (315). An L-shaped slide plate (317) is connected to the side of the slide plate (316), and a hinge bar (318) is hinged between the slide plate (317) and the slide plate (310). An inverted "2"-shaped copper coil (319) is provided below the slide plate (317). The copper coil (319) is mounted on the slide plate through an insulating plate (320). The copper coil (319) is electrically connected to the power line (321) at the upper end thereof, a pair of connecting posts (322) are connected in parallel to the outer side of the copper coil (319), and a sliding frame (323) is slidably connected to the pair of connecting posts (322), a transformer (325) is coaxially connected to the sliding frame (323), and a transducer (326) is coaxially connected to the inner end of the transformer (325), and the ultrasonic forging head (327) is coaxially connected to the inner end of the transducer (326).

6. The ultrasonic-assisted laser cladding equipment according to claim 2, characterized in that: A rubber pad 1 (212) is adhered to the lower side of the clamping block 1 (211), and a rubber pad 2 (214) is adhered to the upper side of the clamping block 2 (213).

7. The ultrasonic-assisted laser cladding equipment according to claim 2, characterized in that: The steel wire rope (206) is sleeved with a compression spring 1 (215) between the clamping block 1 (211) and the clamping block 2 (213).

8. The ultrasonic-assisted laser cladding equipment according to claim 5, characterized in that: The lower end of the front copper coil (319) is provided with a plug-in slot (319a), and the lower end of the rear copper coil (319) is integrally connected with a plug-in block (319b), and a clearance fit is provided between the plug-in block (319b) and the plug-in slot (319a).

9. The ultrasonic-assisted laser cladding equipment according to claim 5, characterized in that: The connecting column (322) is provided with a second compression spring (324) between the copper coil (319) and the sliding frame (323).

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