Laser cladding follow-up ultrasonic rolling device

Abstract

The utility model discloses a laser cladding follow-up ultrasonic rolling device, which belongs to the technical field of laser cladding equipment and comprises a cladding nozzle, a gear ring is fixed on the outer wall of the cladding nozzle, a fastening mechanism is arranged right above the gear ring, a first adjusting mechanism is arranged on one side of the outer wall of the fastening mechanism, and a second adjusting mechanism is arranged on the other side of the outer wall of the fastening mechanism. A second adjusting mechanism is arranged in the first adjusting mechanism, and a third adjusting mechanism is arranged on the second adjusting mechanism; according to the utility model, components such as the gear, the gear ring, the stepping motor and the fastening mechanism are arranged on the cladding spray head, so that the ultrasonic rolling system can flexibly rotate around the peripheral wall of the laser cladding spray head to adjust the direction, and the ultrasonic rolling system can better follow the laser cladding spray head to flexibly move on a panel material for processing.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cladding equipment, in particular to a laser cladding follow-up ultrasonic rolling 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] In the Chinese authorized patent with document number CN113943908A, a device for high-frequency vibration rolling to strengthen laser cladding layer and its use method, the device includes a laser cladding system and an ultrasonic rolling system, the laser cladding system includes a robot arm and a laser cladding head, and the ultrasonic rolling system includes an ultrasonic rolling system bracket, an ultrasonic vibration device and a roller, etc. Ultrasonic rolling is performed while the laser cladding layer is formed, and the roller acts on the edge of the molten pool. The ultrasonic vibration applied to the roller can refine the grains of the cladding layer, optimize the fluidity of the metal in the molten pool, make the tissue distribution uniform, and make it easy for bubbles to escape, reducing micro defects. The rolling of the roller in the action area can not only achieve surface grain refinement for the semi-solidified or just solidified cladding layer, convert residual tensile stress into residual compressive stress, and improve the comprehensive performance of the cladding layer, but also make the surface of the cladding layer smooth and tidy, which can meet the surface quality and size requirements of most parts.

[0004] The above device has the following disadvantages:

[0005] When the laser cladding nozzle is working, the ultrasonic rolling system needs to follow behind and contact the molten pool. The ultrasonic rolling system components in the above structure can only be fixed on one side of the laser cladding nozzle. When the laser cladding nozzle continuously moves back and forth on the panel material, the ultrasonic rolling system cannot be adjusted behind the laser cladding nozzle. Therefore, the position of the plate and the feeding direction need to be adjusted to adapt to the laser cladding nozzle operation. This method results in a large workload and low efficiency.

[0006] The ultrasonic rolling system bracket in the above structure is completely covered on the cladding nozzle, which not only affects the heat dissipation of the nozzle, but also is difficult to disassemble, which is not conducive to replacement and maintenance, and is not convenient for the independent use of the nozzle and the ultrasonic system;

[0007] The longitudinal position adjustment column, transverse position adjustment column and other adjustment components in the above structure cooperate with the pressure sensor to adjust the contact pressure between the ultrasonic vibration system and the molten pool. Not only are the sensors and control circuits complex and prone to failure, but the overall device is bloated, resulting in limited adjustment space and reduced flexibility.

[0008] In order to solve the above problems, a laser cladding follow-up ultrasonic rolling device was designed. Utility Model Content

[0009] The main purpose of the utility model is to provide a laser cladding follow-up ultrasonic rolling device to solve the problems mentioned in the above background technology.

[0010] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0011] A laser cladding follow-up ultrasonic rolling device comprises a cladding nozzle, a gear ring is fixed on the outer wall of the cladding nozzle, a fastening mechanism is arranged directly above the gear ring, a first adjustment mechanism is arranged on one side of the outer wall of the fastening mechanism, a second adjustment mechanism is arranged inside the first adjustment mechanism, and a third adjustment mechanism is arranged on the second adjustment mechanism;

[0012] The fastening mechanism comprises a hoop clamped with the outer wall of the cladding nozzle, a ring groove is formed in the hoop, a limit column slides in the ring groove, and a connecting rod is integrally formed on the outer wall of the limit column;

[0013] The first adjustment mechanism comprises a lifting frame detachably mounted on the connecting rod, a first screw rod is rotatably connected in the lifting frame, the second adjustment mechanism comprises a transverse movement frame threadedly connected to the first screw rod, the frame wall of the transverse movement frame is a hollow structure, and two groups of second screw rods are rotatably mounted in the hollow structure, a slider is threadedly connected to the second screw rod, and the third adjustment mechanism comprises a fixing frame fixed to the outer wall of the slider;

[0014] A stepper motor is fixedly connected to the bottom of the lifting frame, and a gear meshing with the gear ring is nested on the output end of the stepper motor.

[0015] Furthermore, the ring hoops are provided with two groups, the ring hoops are split structures, the top and bottom of the ring hoops docking surfaces are both formed with docking blocks, and the docking blocks are internally threadedly connected with fixing screws.

[0016] Furthermore, an ear plate for fixing is formed on the outer wall of the connecting rod, and the ear plate is fixed to the lifting frame by a screw rod. The first screw rod passes through the top wall of the lifting frame and is fixed with a first adjusting wheel.

[0017] Furthermore, a synchronization component that is mounted in cooperation with the second screw rod is rotatably mounted on the outer wall of the transverse moving frame, and a second adjusting wheel is mounted on the outer wall of one group of pulleys of the synchronization component.

[0018] Furthermore, a worm is rotatably mounted on the top of the fixed frame, an adjustment cap is welded to one end of the outer side of the worm, a worm wheel is meshed with the bottom of the worm, the worm wheel is rotatably mounted on one group of the sliders via bearings, and a turntable is rotatably mounted on the outer wall of the other group of the sliders via bearings.

[0019] Furthermore, an ultrasonic generator is fixedly provided between the worm gear and the rotating disk, a transducer rod is integrally formed at the bottom of the ultrasonic generator, a rolling ball is fixed at the bottom of the transducer rod, and a groove is formed at the top of the rolling ball.

[0020] Beneficial technical effects of the utility model:

[0021] The utility model can realize that the ultrasonic rolling system can flexibly rotate and adjust the direction around the outer wall of the laser cladding nozzle by arranging components such as gears, gear rings, stepper motors and fastening mechanisms on the cladding nozzle, so that it can better follow the flexible movement of the laser cladding nozzle on the panel material.

[0022] The utility model provides a detachable fastening mechanism on the periphery of the cladding nozzle, which can not only quickly realize the disassembly and installation of the ultrasonic rolling system and the cladding nozzle, but also has a small coating area of ​​the cladding nozzle, does not interfere with the heat dissipation of the laser cladding nozzle during operation, and is convenient for the independent use of the two sets of equipment;

[0023] The utility model uses the first adjusting mechanism, the second adjusting mechanism and the third adjusting mechanism, and utilizes the manual adjustment method of the first screw rod, the second screw rod and the worm gear to replace the adjustment method of the transmission hydraulic and electric equipment, which not only reduces the size of the equipment and increases the adjustment space of the ultrasonic rolling component, but also reduces the failure rate, and realizes the precise positioning of the contact distance, pressure and angle between the ultrasonic rolling system and the molten pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view structural schematic diagram of a preferred embodiment of a laser cladding follow-up ultrasonic rolling device according to the utility model;

[0025] Figure 2 It is a rear view structural schematic diagram of a preferred embodiment of a laser cladding follow-up ultrasonic rolling device according to the utility model;

[0026] Figure 3 It is a structural schematic diagram of a fastening mechanism in a preferred embodiment of a laser cladding follow-up ultrasonic rolling device according to the utility model;

[0027] Figure 4 It is a structural schematic diagram of a first adjustment mechanism in a preferred embodiment of a laser cladding follow-up ultrasonic rolling device according to the utility model;

[0028] Figure 5 It is a structural schematic diagram of a second adjustment mechanism in a preferred embodiment of a laser cladding follow-up ultrasonic rolling device according to the utility model;

[0029] Figure 6 It is a structural schematic diagram of a third adjustment mechanism in a preferred embodiment of a laser cladding follow-up ultrasonic rolling device according to the utility model;

[0030] Figure 7 In a preferred embodiment of a laser cladding follow-up ultrasonic rolling device according to the utility model Figure 3 Enlarged view of point A in .

[0031] The following are the descriptions of the reference numerals:

[0032] Cladding nozzle; 2. Fastening mechanism; 201. Hoop; 202. Ring groove; 203. Limiting column; 204. Connecting rod; 205. Docking block; 3. Ultrasonic generator; 4. Transducer rod; 5. Rolling ball; 6. First adjusting mechanism; 601. Lifting frame; 602. First screw rod; 603. First adjusting wheel; 7. Second adjusting mechanism; 701. Transverse frame; 702. Second screw rod; 703. Sliding block; 704. Synchronizing assembly; 705. Second adjusting wheel; 8. Third adjusting mechanism; 801. Turntable; 802. Worm wheel; 803. Worm; 804. Adjusting cap; 805. Fixing frame; 9. Gear ring; 10. Gear; 11. Stepping motor. DETAILED DESCRIPTION

[0033] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0034] like Figure 1-Figure 7As shown, a laser cladding follow-up ultrasonic rolling device provided in this embodiment includes a cladding nozzle 1, a gear ring 9 is fixed on the outer wall of the cladding nozzle 1, a fastening mechanism 2 is arranged directly above the gear ring 9, a first adjustment mechanism 6 is arranged on one side of the outer wall of the fastening mechanism 2, a second adjustment mechanism 7 is arranged inside the first adjustment mechanism 6, and a third adjustment mechanism 8 is arranged on the second adjustment mechanism 7; the fastening mechanism 2 includes a hoop 201 fixed to the outer wall of the cladding nozzle 1, a ring groove 202 is formed in the hoop 201, a limiting column 203 is slidable in the ring groove 202, and a limiting column 203 is arranged on the ring groove 202. A connecting rod 204 is integrally formed on the outer wall of the position column 203; the first adjusting mechanism 6 includes a lifting frame 601 detachably mounted on the connecting rod 204, and a first screw rod 602 is rotatably connected inside the lifting frame 601; the second adjusting mechanism 7 includes a transverse frame 701 threadedly connected to the first screw rod 602, the frame wall of the transverse frame 701 is a hollow structure, and two groups of second screw rods 702 are rotatably installed inside the hollow structure, a slider 703 is threadedly connected to the second screw rod 702, and the third adjusting mechanism 8 includes a fixing frame 805 fixed to the outer wall of the slider 703.

[0035] When the above structure is adopted, the connecting rod 204 is pre-installed with the lifting frame 601 outside, and then the limiting column 203 is slid into the ring groove 202 to fix the positions of the two sets of ring hoops 201, and then the other petal ring hoop 201 is docked and fixed.

[0036] A stepper motor 11 is fixedly connected to the bottom of the lifting frame 601, and a gear 10 meshing with the ring gear 9 is nested on the output end of the stepper motor 11. The driving power supply of the stepper motor is composed of a variable frequency pulse signal source, a pulse distributor and a pulse amplifier. The driving power supply provides pulse current to the motor winding, and has precise and controllable rotation angle control, which is beneficial to the precise rotation adjustment of the ultrasonic rolling system.

[0037] There are two groups of hoop 201, which is a split structure. The top and bottom of the butt joint surface of the hoop 201 are both formed with butt joint blocks 205, and the butt joint blocks 205 are internally threaded with fixing screws, which are fixed by screwing with a screwdriver.

[0038] An ear plate for fixing is formed on the outer wall of the connecting rod 204 , and the ear plate is fixed to the lifting frame 601 through a screw rod. A first screw rod 602 passes through the top wall of the lifting frame 601 and is fixed with a first adjusting wheel 603 .

[0039] A synchronization component 704 is rotatably mounted on the outer wall of the transverse frame 701 and is installed in cooperation with the second screw rod 702. A second adjustment wheel 705 is installed on the outer wall of one group of pulleys of the synchronization component 704. The wall of the transverse frame 701 is thin and small, which is conducive to a larger adjustment space for the ultrasonic rolling component.

[0040] A worm 803 is rotatably mounted on the top of the fixed frame 805, an adjustment cap 804 is welded to one end of the worm 803, a worm wheel 802 is meshed at the bottom of the worm 803, the worm wheel 802 is rotatably mounted on one set of sliders 703 via bearings, and a turntable 801 is rotatably mounted on the outer wall of the other set of sliders 703 via bearings.

[0041] An ultrasonic generator 3 is fixed between the worm gear 802 and the turntable 801. A transducer rod 4 is integrally formed at the bottom of the ultrasonic generator 3. A rolling ball 5 is fixed at the bottom of the transducer rod 4. A groove is provided on the top of the rolling ball 5. The ultrasonic pulse emitted by the ultrasonic generator 3 is converted into low-amplitude and high-frequency mechanical energy through the action of the transducer of the transducer rod 4, and then transmitted to the rolling ball 5 to act on the contacting molten pool.

[0042] Working principle of this device: When this device is in use, the cladding nozzle 1 is fixedly installed perpendicular to the processing surface, the limit column 203 in the fastening mechanism 2 is pre-threadedly connected with the lifting frame 601 through the connecting rod 204, and then the two sets of hoops 201 are embraced on the outer wall of the cladding nozzle 1, and the inner screw of the docking block 205 is clamped by the cross screwdriver knob, so that the first adjustment mechanism 6 can be fixed on the outer wall of the cladding nozzle 1, and at the same time, the gear 10 and the gear ring 9 are in a meshing state, and the stepper motor 11 is connected to the external control device.

[0043] The trial operation device is working, and the laser cladding nozzle 1 and the cladding material react to produce a molten pool. The user adjusts the height of the rolling ball 5 through the first screw 602 and the first adjusting wheel 603 in the first adjusting mechanism 6 according to the specifications of the molten pool, so that the groove on the top of the rolling ball 5 is inserted into and contacts the two sides of the outer wall of the molten pool, and then the second adjusting wheel 705, the second screw 702, and the slider 703 in the second adjusting mechanism 7 are used to adjust the distance between the rolling ball 5 and the two laser points of the cladding nozzle 1, so that the molten pool can be quickly subjected to ultrasonic vibration treatment within a suitable distance after cladding, thereby quickly achieving surface grain refinement of the semi-solidified or just solidified cladding layer, converting the residual tensile stress into residual compressive stress, improving the comprehensive performance of the cladding layer, and making the surface of the cladding layer smooth and tidy. During the adjustment process of the second adjusting mechanism 7, the third adjusting mechanism 8 is synchronously operated, and the one-way transmission and locking effect of the worm 803 and the worm wheel 802 are utilized to ensure that the ultrasonic rolling system is still stable in an inclined state.

[0044] By adopting the above structure, the contact distance, pressure and angle between the ultrasonic rolling system and the molten pool can be manually adjusted. Not only is the structure streamlined, but the operating space is larger, which is conducive to adjusting the ultrasonic rolling system to a position closer to the laser bright spot and improving the effect of the ultrasonic rolling system. Moreover, the structure is mainly mechanical, not easy to damage, and easy to maintain.

[0045] The above adjustment structure can be applied to the operation of various types of panel materials and cylindrical materials. When processing panel materials, the laser cladding nozzle 1 needs to move back and forth. At this time, the direction of travel of the molten pool changes. According to the specific situation, the stepper motor 11 can be started by an external control device to drive the gear 10 to rotate. The gear 10 is meshed and driven on the ring gear 9, driving the first adjustment mechanism 6 to rotate in the fastening mechanism 2 until the ball and the molten pool reach a suitable interference mode to complete the adjustment, which greatly improves the flexibility of the device.

[0046] With the above structure, the fastening mechanism 2 occupies a smaller area on the cladding nozzle 1, which is not only convenient for disassembly but also does not affect the heat dissipation of the cladding nozzle 1 during operation.

[0047] The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A laser cladding follow-up ultrasonic rolling device, comprising a cladding nozzle (1), characterized in that: A gear ring (9) is fixed on the outer wall of the cladding nozzle (1), a fastening mechanism (2) is arranged directly above the gear ring (9), a first adjustment mechanism (6) is arranged on one side of the outer wall of the fastening mechanism (2), a second adjustment mechanism (7) is arranged inside the first adjustment mechanism (6), and a third adjustment mechanism (8) is arranged on the second adjustment mechanism (7); The fastening mechanism (2) comprises a hoop (201) fixed to the outer wall of the cladding nozzle (1), a ring groove (202) is formed in the hoop (201), a limit column (203) is slidably arranged in the ring groove (202), and a connecting rod (204) is integrally formed on the outer wall of the limit column (203); The first adjustment mechanism (6) comprises a lifting frame (601) detachably mounted on the connecting rod (204), a first screw rod (602) being rotatably connected inside the lifting frame (601), the second adjustment mechanism (7) comprises a transverse movement frame (701) being threadedly connected to the first screw rod (602), the frame wall of the transverse movement frame (701) being a hollow structure, and two groups of second screw rods (702) being rotatably mounted inside the hollow structure, a slider (703) being threadedly connected to the second screw rod (702), and the third adjustment mechanism (8) comprises a fixing frame (805) fixedly mounted on the outer wall of the slider (703); A stepper motor (11) is fixedly connected to the bottom of the lifting frame (601), and a gear (10) meshing with the gear ring (9) is embedded on the output end of the stepper motor (11).

2. The laser cladding follow-up ultrasonic rolling device according to claim 1 is characterized in that: The ring hoops (201) have two groups. The ring hoops (201) are split structures. The top and bottom of the butt joint surface of the ring hoops (201) are both formed with butt joint blocks (205). The butt joint blocks (205) are internally threadedly connected with a fixing screw.

3. The laser cladding follow-up ultrasonic rolling device according to claim 2 is characterized in that: An ear plate for fixing is formed on the outer wall of the connecting rod (204), and the ear plate is fixed to the lifting frame (601) via a screw rod. The first screw rod (602) passes through the top wall of the lifting frame (601) and is fixed with a first adjusting wheel (603).

4. The laser cladding follow-up ultrasonic rolling device according to claim 3 is characterized in that: A synchronous assembly (704) mounted in cooperation with the second screw rod (702) is rotatably mounted on the outer wall of the transverse moving frame (701), and a second adjusting wheel (705) is mounted on the outer wall of one group of pulleys of the synchronous assembly (704).

5. The laser cladding follow-up ultrasonic rolling device according to claim 4 is characterized in that: A worm (803) is rotatably mounted on the top of the fixed frame (805), an adjustment cap (804) is welded to one end of the outside of the worm (803), a worm wheel (802) is meshed at the bottom of the worm (803), the worm wheel (802) and one group of the sliders (703) are rotatably mounted via bearings, and a turntable (801) is rotatably mounted on the outer wall of the other group of the sliders (703) via bearings.

6. The laser cladding follow-up ultrasonic rolling device according to claim 5, characterized in that: An ultrasonic generator (3) is fixedly arranged between the worm wheel (802) and the rotating disk (801), a transducer rod (4) is integrally formed at the bottom of the ultrasonic generator (3), a rolling ball (5) is fixed at the bottom of the transducer rod (4), and a groove is formed at the top of the rolling ball (5).

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