Gear blanking cap laser preheating welding equipment and gear blanking cap welding method

Abstract

The invention discloses gear blanking cap laser preheating welding equipment and a gear blanking cap welding method.The gear blanking cap laser preheating welding equipment comprises a rack and further comprises a laser mechanism arranged on the rack and two positioning mechanisms arranged on the rack in the X-axis direction, and the positioning mechanisms are used for fixing products; and the laser mechanism is used for irradiating the product fixed by the positioning mechanism with laser. The laser welding device has the advantages that the laser mechanism is adopted to preheat and weld a product, when the product fixed in the positioning mechanism is preheated and then welded, secondary tool replacement is not needed, the time of the whole welding process is shortened, efficiency is improved, meanwhile, the whole mechanism can preheat and weld the product, the performance of equipment is improved, and the production cost is reduced. And the market competitiveness is enhanced.

Description

Technical Field

[0001] The invention relates to the field of laser welding, in particular to a gear plugging cover laser preheating welding device and a gear plugging cover welding method. Background Art

[0002] In the laser welding process, the preheating equipment and the welding equipment are two different devices. After the product is preheated, welding requires a second replacement of the tooling, resulting in reduced work efficiency. In addition, the traditional preheating method uses flame heating, heating furnace heating and far infrared heating. The preheating effect is not ideal, which makes subsequent products prone to cold cracks.

[0003] In view of this, it is necessary to provide a gear cover laser preheating welding device and a gear cover welding method. Summary of the invention

[0004] The present invention provides a gear plug cover laser preheating welding device and a gear plug cover welding method, which effectively solves the problems of cold cracks and low welding efficiency in existing products:

[0005] The technical solution adopted by the present invention is:

[0006] A gear cover laser preheating welding device comprises a frame, a laser mechanism arranged on the frame, and two positioning mechanisms arranged on the frame along the X-axis direction. The positioning mechanism is used to fix the product, and the laser mechanism is used to irradiate the product fixed by the positioning mechanism with laser.

[0007] Furthermore, the positioning mechanism includes a No. 1 servo linear module fixedly arranged on the frame along the Y-axis direction, a No. 1 plate fixedly arranged at the output end of the No. 1 servo linear module, a rotating seat arranged on the No. 1 plate and rotating with the Z-axis as the rotation axis, a hollow rotating platform arranged at the lower end of the No. 1 plate for driving the rotating seat to rotate, an internal support assembly arranged on the rotating seat, and a follow-up clamping assembly fixedly arranged on the frame.

[0008] Furthermore, the inner support assembly includes a support block fixedly mounted on the upper end surface of the rotating seat and provided with a No. 1 vertical hole, an inner support shaft vertically slidably connected to the upper end surface of the rotating seat and concentric with the No. 1 vertical hole, a support sleeve located on the outer ring of the support shaft and arranged on the rotating seat, a plurality of inner support blocks slidably connected to the support sleeve in a radial direction, and a No. 1 cylinder fixedly mounted on the rotating seat for driving the inner support shaft to rise and fall, the outer circumference of the inner support shaft abuts against the inner support block, the inner support shaft is provided with a circumferential inclined surface, and the inner support block is provided with a No. 2 inclined surface slidably matched with the circumferential inclined surface.

[0009] Furthermore, the follower clamping assembly includes a support fixedly arranged on the frame, a linear guide rail vertically arranged on the support, a sliding frame slidably arranged on the linear guide rail, a No. 3 cylinder fixedly arranged on the support for driving the sliding frame to rise and fall, a rotating rod rotatably arranged on the sliding frame with the Z axis as the rotation axis, and a pressure block coaxially fixedly connected to the lower end of the rotating rod.

[0010] Furthermore, the pressing block is used to press the upper end surface of the product, and the pressing block is provided with a avoidance hole for avoiding the laser.

[0011] Furthermore, the laser mechanism includes a mounting base arranged on the frame, a No. 2 servo linear module fixedly arranged on the mounting base along the X-axis direction, a No. 3 servo linear module fixedly arranged at the output end of the No. 2 servo linear module along the Z-axis direction, an R-axis servo module fixedly arranged at the output end of the No. 3 servo linear module with the Y-axis as the rotation axis, and a laser fixedly arranged at the output end of the R-axis servo module.

[0012] Furthermore, a cover body is also arranged on the frame, and an air valve connecting the inside and the outside of the cover body is arranged on the frame.

[0013] The gear plug cover laser welding method adopts the gear plug cover laser preheating welding equipment, including the following steps: S1, positioning and fixing the product by a positioning mechanism; S2, preheating the product fixed by the positioning mechanism by a laser mechanism; S3, welding the preheated product by a laser mechanism; S4, unloading the product from the positioning mechanism.

[0014] Furthermore, the laser power during preheating in S2 is lower than the welding power, the preheating range includes the entire weld and the heat affected zone, and the height of the laser mechanism during preheating is 100 times the height of the laser mechanism during welding.

[0015] Furthermore, the laser power during preheating is 5-700W, the laser power during welding is 1200-1500W, and the laser moving speed during welding is equal to the laser moving speed during preheating.

[0016] Beneficial effects of the invention:

[0017] 1. The laser mechanism is used to preheat and weld the product. When the product fixed in the positioning mechanism is preheated and welded, there is no need to replace the tooling for a second time, which shortens the time of the entire welding process and improves efficiency. At the same time, the entire mechanism can preheat and weld the product, improve the performance of the equipment, and enhance market competitiveness.

[0018] 2. The structural design of the positioning mechanism can achieve concentric fixation of the product, and can use the follow-up clamping assembly to effectively fix the product during the rotation process to ensure the stability of the product during the rotation process.

[0019] 3. The structural design of the inner support assembly can expand and fix the inner wall of the product through the inner support block, which can ensure the concentricity of the product while fixing the product and will not cause bumps on the outer surface of the product.

[0020] 4. By setting up the hood and the air valve, the dust generated during the operation can be removed in time to ensure a clean working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a gear cover laser preheating welding device without a cover provided in an embodiment of the present application.

[0022] Figure 2 A schematic diagram of a hollow rotating platform, a rotating seat and an inner support assembly of a gear cover laser preheating welding device provided in an embodiment of the present application.

[0023] Figure 3 A schematic diagram of the hollow rotating platform, rotating seat and inner support assembly of the gear cover laser preheating welding equipment provided in an embodiment of the present application without the support block and the inner support shaft.

[0024] Figure 4 A schematic diagram of a follower clamping assembly of a gear cover laser preheating welding device provided in an embodiment of the present application.

[0025] Figure 5 This is an overall schematic diagram of the gear cover laser preheating welding equipment provided in an embodiment of the present application.

[0026] Markings in the figure are: 1. Frame; 2. Laser mechanism; 3. Positioning mechanism; 31. Servo linear module No. 1; 32. Plate No. 1; 33. Rotating seat; 34. Hollow rotating platform; 35. Follow-up clamping assembly; 36. Internal support assembly; 361. Support block; 362. Internal support shaft; 363. Support sleeve; 364. Internal support block; 365. Cylinder No. 1; 351. Support; 352. Linear guide; 353. Sliding frame; 354. Cylinder No. 3; 355. Rotating rod; 356. Pressing block; 21. Mounting seat; 22. Servo linear module No. 2; 23. Servo linear module No. 3; 24. R-axis servo module; 25. Laser; 4. Cover; 5. Air valve. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] like Figure 1As shown, the first embodiment provided by the present application is a gear cover laser preheating welding device, including a frame 1, a laser mechanism 2 arranged on the frame 1, and two positioning mechanisms 3 arranged on the frame 1 along the X-axis direction, wherein the positioning mechanism 3 is used to fix the product, and the laser mechanism 2 is used to irradiate the product fixed by the positioning mechanism 3 with laser.

[0029] In actual use, the product is positioned by the positioning mechanism 3, and the product in the positioning mechanism 3 is preheated and welded by laser processing.

[0030] In the above design, the product can be quickly positioned, and preheating and welding can be performed after positioning, which shortens the time of the entire welding process and improves welding efficiency.

[0031] Specifically: Figure 2 As shown, the positioning mechanism 3 includes a servo linear module No. 1 31 fixedly arranged on the frame 1 along the Y-axis direction, a plate No. 1 32 fixedly arranged at the output end of the servo linear module No. 1 31, a rotating seat 33 arranged on the plate No. 1 32 and rotating around the Z-axis, a hollow rotating platform 34 arranged at the lower end of the plate No. 1 32 for driving the rotating seat 33 to rotate, an internal support assembly 36 arranged on the rotating seat 33, and a follow-up clamping assembly 35 fixedly arranged on the frame 1.

[0032] During the process of fixing the product, the product is first expanded and fixed inwardly by the inner support assembly 36, and then the upper end surface of the product is clamped by the follower clamping assembly 35, and then the No. 1 servo linear module 31 drives the No. 1 plate 32 to move to the preheating or welding position. During the preheating or welding process, the hollow rotating platform 34 drives the rotating seat 33 to rotate, driving the product to rotate.

[0033] In the above design, the structural design and specific implementation method of the positioning mechanism 3 can effectively position the product.

[0034] Specifically: Figure 2 and Figure 3 As shown, the inner support assembly 36 includes a support block 361 fixedly arranged on the upper end surface of the rotating seat 33 and provided with a No. 1 vertical hole, an inner support shaft 362 vertically slidably connected to the upper end surface of the rotating seat 33 and concentric with the No. 1 vertical hole, a support sleeve 363 located on the outer ring of the support shaft and arranged on the rotating seat 33, a plurality of inner support blocks 364 slidably connected to the support sleeve 363 in the radial direction, and a No. 1 cylinder 365 fixedly arranged on the rotating seat 33 for driving the inner support shaft 362 to rise and fall, the outer periphery of the inner support shaft 362 is abutted against the inner support block 364, the inner support shaft 362 is provided with a circumferential inclined surface, and the inner support block 364 is provided with a No. 2 inclined surface slidably matched with the circumferential inclined surface.

[0035] When the product needs to be fixed, the product is first placed in the annular area between the support block 361 and the inner support block 364. At this time, the inner support shaft 362 drives several inner support blocks 364 to be in a contracted state under the drive of the No. 1 cylinder 365. After the product is placed in place, the inner support shaft 362 is driven downward by the No. 1 cylinder 365, so that the circular inclined surface and the No. 2 inclined surface slide and drive the inner support block 364 to move along the radial direction to one side of the inner wall of the product, and finally fit tightly to the inner wall of the product.

[0036] In the above design, the structural design and specific implementation method of the inner support assembly 36 can effectively achieve stable fixation of the product and can quickly achieve concentric positioning of the product.

[0037] Specifically: Figure 4 As shown, the follower clamping assembly 35 includes a support 351 fixedly arranged on the frame 1, a linear guide 352 vertically arranged on the support 351, a sliding frame 353 slidably arranged on the linear guide 352, a No. 3 cylinder 354 fixedly arranged on the support 351 for driving the sliding frame 353 to rise and fall, a rotating rod 355 rotatably arranged on the sliding frame 353 with the Z axis as the rotation axis, and a pressure block 356 coaxially fixedly connected to the lower end of the rotating rod 355.

[0038] After the product is fixed by the inner support assembly 36, the sliding frame 353 is driven downward by the No. 3 cylinder 354, so that the sliding frame 353 drives the rotating rod 355 and the pressing block 356 to move downward, and finally the pressing block 356 presses the upper end surface of the product. When the hollow rotating platform 34 drives the rotating seat 33 to rotate, the product will rotate synchronously, and at this time, the pressing block 356 will rotate synchronously with the product under the cooperation of the rotating rod 355.

[0039] In the above design, the structural design and specific implementation method of the follower clamping assembly 35 can effectively realize the clamping and positioning of the product in a moving state, which is beneficial to the preheating and welding process of the product.

[0040] Specifically, the pressing block 356 is used to press the upper end surface of the product, and the pressing block 356 is provided with a avoidance hole for avoiding the laser.

[0041] When the product is preheated or welded, the laser will pass through the avoidance hole and act on the predetermined position of the product.

[0042] In the above design, the structural design and specific implementation of the pressing block 356 can achieve compaction of the product without hindering the normal process of the product.

[0043] Specifically: Figure 1As shown, the laser mechanism 2 includes a mounting base 21 arranged on the frame 1, a No. 2 servo linear module 22 fixedly arranged on the mounting base 21 along the X-axis direction, a No. 3 servo linear module 23 fixedly arranged at the output end of the No. 2 servo linear module 22 along the Z-axis direction, an R-axis servo module 24 fixedly arranged at the output end of the No. 3 servo linear module 23 with the Y-axis as the rotation axis, and a laser 25 fixedly arranged at the output end of the R-axis servo module 24.

[0044] When preheating or welding is required, the product is driven to move along the X-axis through the positioning mechanism 3, and the No. 2 servo linear module 22 drives the No. 3 servo linear module 23 to move to a predetermined position along the Y-axis direction, and the No. 3 servo linear module 23 drives the R-axis servo module 24 to rise and fall to a predetermined position, and then the R-axis servo module 24 drives the laser 25 to rotate, and the laser 25 is used to emit laser light on the product.

[0045] In the above design, the structural design and specific implementation method of the laser mechanism 2 can effectively realize accurate laser striking of the product, which is convenient for laser preheating and laser welding of the product.

[0046] Specifically: Figure 5 As shown, a cover body 4 is also provided on the frame 1 , and a wind valve 5 communicating with the inside and outside of the cover body 4 is provided on the frame 1 .

[0047] The preheating and welding process is carried out in the cover body 4 , and the dust generated during the preheating and welding process is led out of the cover body 4 through the air valve 5 .

[0048] In the above design, the design of the cover body 4 and the air valve 5 can realize the timely extraction of dust generated during the preheating and welding process.

[0049] The second embodiment provided by the present application is a gear cover laser welding method, which adopts the gear cover laser preheating welding equipment, including the following steps: S1, positioning and fixing the product by the positioning mechanism 3; S2, preheating the product fixed by the positioning mechanism 3 by the laser mechanism 2; S3, welding the preheated product by the laser mechanism 2; S4, unloading the product from the positioning mechanism 3.

[0050] In the above design, after the positioning mechanism 3 fixes the product, the preheating and welding process does not require secondary disassembly of the product, which saves time and improves work efficiency.

[0051] Specifically: during preheating in S2, the laser power is lower than the welding power, the preheating range includes the entire weld and the heat affected zone, and the height of the laser mechanism 2 during preheating is 100 times the height of the laser mechanism 2 during welding.

[0052] In the above design, the preheating laser power is lower than the welding power, which will not cause the product to melt and effectively avoids oxidation, evaporation and volatilization of the material surface.

[0053] Specifically, the laser power is 5-700W during preheating, and the laser power is 1200-1500W during welding. The laser moving speed during welding is equal to the laser moving speed during preheating.

[0054] In the above design, a laser power of 5 to 700 W can achieve effective preheating of the product, and a laser power of 1200 to 1500 W can achieve effective welding of the product. The welding power is greater than the laser power, and the movement rate during preheating is the same as that during welding, which can facilitate the adjustment of parameters.

[0055] To further explain in detail, it should be understood that the above is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gear cover laser preheating welding device, comprising a frame (1), characterized in that: It also comprises a laser mechanism (2) arranged on the frame (1), and two positioning mechanisms (3) arranged on the frame (1) along the X-axis direction, wherein the positioning mechanisms (3) are used to fix the product, and the laser mechanism (2) is used to irradiate the product fixed by the positioning mechanisms (3) with laser.

2. The gear cover laser preheating welding equipment according to claim 1 is characterized in that: The positioning mechanism (3) comprises a No. 1 servo linear module (31) fixedly arranged on the frame (1) along the Y-axis direction, a No. 1 plate (32) fixedly arranged at the output end of the No. 1 servo linear module (31), a rotating seat (33) arranged on the No. 1 plate (32) and rotating around the Z-axis, a hollow rotating platform (34) arranged at the lower end of the No. 1 plate (32) for driving the rotating seat (33) to rotate, an inner support assembly (36) arranged on the rotating seat (33), and a follower clamping assembly (35) fixedly arranged on the frame (1).

3. The gear cover laser preheating welding equipment according to claim 2 is characterized in that: The inner support assembly (36) includes a support block (361) fixedly arranged on the upper end surface of the rotating seat (33) and provided with a first vertical hole, an inner support shaft (362) vertically slidably connected to the upper end surface of the rotating seat (33) and concentric with the first vertical hole, a support sleeve (363) located on the outer ring of the support shaft and arranged on the rotating seat (33), a plurality of inner support blocks (364) slidably connected to the support sleeve (363) in the radial direction, and a first cylinder (365) fixedly arranged on the rotating seat (33) for driving the inner support shaft (362) to rise and fall, the outer periphery of the inner support shaft (362) abuts against the inner support block (364), the inner support shaft (362) is provided with a circumferential inclined surface, and the inner support block (364) is provided with a second inclined surface slidably matched with the circumferential inclined surface.

4. The gear cover laser preheating welding equipment according to claim 2 is characterized in that: The follower clamping assembly (35) comprises a support (351) fixedly arranged on the frame (1), a linear guide rail (352) vertically arranged on the support (351), a sliding frame (353) slidably arranged on the linear guide rail (352), a No. 3 air cylinder (354) fixedly arranged on the support (351) for driving the sliding frame (353) to rise and fall, a rotating rod (355) rotatably arranged on the sliding frame (353) with the Z axis as the rotation axis, and a pressing block (356) coaxially fixedly connected to the lower end of the rotating rod (355).

5. The gear cover laser preheating welding equipment according to claim 4 is characterized in that: The pressing block (356) is used to press the upper end surface of the product, and the pressing block (356) is provided with a avoidance hole for avoiding laser.

6. The gear cover laser preheating welding equipment according to claim 1 is characterized in that: The laser mechanism (2) comprises a mounting seat (21) arranged on a frame (1), a second servo linear module (22) fixedly arranged on the mounting seat (21) along an X-axis direction, a third servo linear module (23) fixedly arranged at an output end of the second servo linear module (22) along a Z-axis direction, an R-axis servo module (24) fixedly arranged at an output end of the third servo linear module (23) with a Y-axis as a rotation axis, and a laser (25) fixedly arranged at the output end of the R-axis servo module (24).

7. The gear cover laser preheating welding equipment according to claim 1 is characterized in that: The frame (1) is also provided with a cover body (4), and the frame (1) is provided with an air valve (5) communicating with the inside and outside of the cover body (4).

8. A gear plug cover laser welding method, using the gear plug cover laser preheating welding equipment according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: S1, positioning and fixing the product by means of a positioning mechanism (3); S2, preheating the product fixed by the positioning mechanism (3) by means of a laser mechanism (2); S3, welding the preheated product by means of the laser mechanism (2); and S4, unloading the product from the positioning mechanism (3).

9. The gear cover laser welding method according to claim 8, characterized in that: During preheating in S2, the laser power is lower than the welding power, the preheating range includes the entire weld and the heat-affected zone, and the height of the laser mechanism (2) during preheating is 100 times the height of the laser mechanism (2) during welding.

10. The gear cover laser welding method according to claim 8, characterized in that: The laser power is 5-700W during preheating, and 1200-1500W during welding. The laser moving speed during welding is equal to the laser moving speed during preheating.

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