CN112775544A - Workpiece welding equipment and method - Google Patents
Workpiece welding equipment and method Download PDFInfo
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- CN112775544A CN112775544A CN201911007913.5A CN201911007913A CN112775544A CN 112775544 A CN112775544 A CN 112775544A CN 201911007913 A CN201911007913 A CN 201911007913A CN 112775544 A CN112775544 A CN 112775544A
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- 238000003466 welding Methods 0.000 title claims abstract description 238
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 81
- 238000003825 pressing Methods 0.000 claims description 86
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000008646 thermal stress Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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Abstract
The invention discloses a workpiece welding device, wherein a workpiece comprises at least one cylindrical part to be welded, and the workpiece welding device comprises a workbench, a laser welding device and a jig mechanism; the jig mechanism is fixedly arranged on the workbench and comprises a rotating platform, and the rotating platform drives the workpiece to rotate; the laser welding devices are arranged on the workbench and positioned around the jig mechanism; the laser welding device is provided with welding heads which are distributed at equal intervals, the joint point of the laser emitting direction of each welding head is positioned on the rotating shaft of the rotating platform, and the rotating platform is coaxial with a cylindrical part of a workpiece when the workpiece is welded. The welding method and the welding device have the advantages that the workpiece is welded by the three welding spots at the same time, and the welding efficiency is improved; the thermal stress effect among welding points is counteracted, and the welding quality and the product performance are improved; and the technical defects that laser is shielded and the welding effect is not uniform in the laser welding process when the workpiece comprises a plurality of cylindrical parts are overcome.
Description
Technical Field
The application relates to the technical field of laser welding, in particular to workpiece welding equipment and a method.
Background
A cylindrical workpiece is a workpiece frequently used in modern industrial production, and the processing method involved in the cylindrical workpiece is usually different from other workpieces due to the structural particularity of the cylindrical workpiece. Laser welding is one of the methods, and because of structural characteristics of the cylindrical workpiece, if only one welding point is welded during laser welding, the product firmness degree is seriously influenced. The welding spot selection for the cylindrical workpiece is usually located on the outer curved surface of the cylindrical body, so that the linear guide type welding device which is often used in the laser welding cannot realize the operation.
In the conventional method for welding a cylindrical workpiece, a technical means for welding the cylindrical workpiece for multiple times after rotating the cylindrical workpiece is provided, but the method still has the following defects: 1. the efficiency of multiple welding is low, and the requirement of modern industrial rapidity is not met; 2. in the laser welding process of high-precision and high-performance products, the influence of complex stress generated in laser welding on the products is always considered, and the performance of the products is influenced by the action of thermal stress caused by multiple times of welding; 3. for single column single circular track symmetrical welding, the welding head can be directly distributed around the product, but if two adjacent circular columns need to be welded for the same product, one circular column can block laser, so that the other column cannot realize laser welding within an angle range.
Therefore, there is a need for a welding apparatus suitable for cylindrical workpieces, especially for bi-cylindrical workpieces, which solves the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The technical problem that this application embodiment will solve provides a work piece welding equipment who is applicable to the cylinder work piece, improves welding efficiency, welding quality.
A workpiece welding device comprises a workbench, a laser welding device and a jig mechanism, wherein the workbench comprises a base and a plurality of cylindrical parts to be welded;
the jig mechanism is fixedly arranged on the workbench and comprises a rotating platform, and the rotating platform is used for driving the workpiece to rotate;
the laser welding devices are provided with three, and each laser welding device is arranged on the workbench and positioned around the jig mechanism; the laser welding device is provided with welding heads which are distributed at equal intervals, the joint point of the laser emitting direction of each welding head is positioned on the rotating shaft of the rotating platform, and the rotating platform is coaxial with one cylindrical part in the workpieces when the workpieces are welded.
Preferably, the equipment further comprises a pressing mechanism, the pressing mechanism is arranged on the workbench and comprises a pressing head, the pressing head is coaxial with the rotary platform, and the pressing head is used for pressing the workpiece.
Preferably, the pressing mechanism is located between two of the laser welding devices or between two of the welding heads.
Preferably, the pressing mechanism further comprises a pressing mechanism base, an oil buffer assembly, a pressing head guide rail assembly, an adapter plate, a compression spring, a pressing head mounting seat and a cylinder assembly;
the oil buffer component is arranged on the side wall of the pressing mechanism base, the pressing head guide rail component is arranged along the side wall of the pressing mechanism base, and the pressing head guide rail component is arranged above the oil buffer component;
the adapter plate is connected with the pressing head guide rail assembly, the pressing head mounting seat is connected with the adapter plate, the pressing head is mounted on the pressing head mounting seat, and a compression spring is mounted between the pressing head mounting seat and the pressing head;
the cylinder assembly is arranged at the top of the pressing mechanism base, and a piston rod of the cylinder assembly is connected with the adapter plate.
Preferably, the jig mechanism further comprises a linear electric platform and a clamp, the linear electric platform comprises a driving assembly and a guide rail assembly, the clamp is used for fixing the workpiece on the rotating platform, the rotating platform is arranged on the workbench in a sliding mode through the guide rail assembly, and the driving assembly is used for driving the guide rail assembly to move along the linear guide rail.
Preferably, the fixture comprises a fixture base, a limiting component, a fixture guide rail component, a product fixing seat and a fixture cylinder component;
the jig base is installed on the rotary platform, the limiting assembly and the product fixing seat are arranged on the jig base, the limiting assembly is used for limiting a workpiece installed on the product fixing seat, the jig air cylinder assembly is arranged on the side face of the jig base, and the jig air cylinder assembly is used for adjusting the position of the product fixing seat in the direction perpendicular to the rotary platform.
Preferably, the laser welding device further comprises a welding head mounting base, an X-axis fine adjustment platform, a Y-axis fine adjustment platform, a Z-axis fine adjustment platform, a reinforcing rib, a fine adjustment platform adapter plate, a Z-axis fine adjustment platform mounting plate, a welding head fixing plate and a welding head adjusting plate;
the X-axis fine adjustment platform is arranged on the top of the welding head mounting base, and the Y-axis fine adjustment platform is arranged above the X-axis fine adjustment platform and connected with the X-axis fine adjustment platform;
the fine tuning platform adapter plate is fixedly arranged at the top of the Y-axis fine tuning platform, the Z-axis fine tuning platform mounting plate is vertically arranged on the fine tuning platform adapter plate, the Z-axis fine tuning platform is arranged on the Z-axis fine tuning platform mounting plate, and the reinforcing rib is arranged at the back of the Z-axis fine tuning platform mounting plate and is fixedly connected with the fine tuning platform adapter plate;
the welding head is connected with a welding head fixing plate through a welding head adjusting plate, and the welding head fixing plate is connected with the Z-axis fine adjustment platform.
The workpiece welding method applied to the workpiece welding equipment is characterized by comprising the following steps of:
s1, initializing and setting working parameters of the workpiece welding equipment, wherein the working parameters comprise preset parameters of a laser welding device and preset parameters of a jig mechanism;
s2, fixing the workpiece to be welded on the jig mechanism to enable a cylindrical part to be welded on the workpiece to be coaxial with the rotating platform;
s3, the jig mechanism moves the workpiece to be welded to a target position according to preset parameters;
s4, three laser welding devices are started simultaneously, each laser welding device is matched with a jig mechanism simultaneously to weld the cylindrical part to be welded on the workpiece according to working parameters, wherein the parameters of the laser welding devices comprise the welding times of the laser welding devices, and the parameters of the jig mechanism comprise the rotation angle of the rotating platform in the interval between two adjacent welding operations;
and S5, closing the three laser welding devices after welding.
Preferably, the workpiece welding apparatus further comprises a pressing mechanism, and the method further comprises:
before each welding operation, a workpiece reaching a target position is pressed through a pressing mechanism; and releasing the hold-down mechanism after each welding operation is completed.
Preferably, the workpiece welded by the workpiece welding method comprises at least two cylindrical parts with the same welding base;
the method further comprises the following steps:
s6, after welding of one cylindrical component is completed in the step S5, adjusting the position of the workpiece through a jig mechanism to enable the other cylindrical component to be welded to be coaxial with the rotating platform, and executing the steps S3 to S5 again;
and S7, repeatedly executing the step S6 until all the cylindrical parts to be welded are welded.
Compared with the prior art, the invention has the beneficial effects that: the cylindrical workpiece can be welded by three welding spots at the same time, so that the welding efficiency of the cylindrical workpiece is effectively improved; the uniform and symmetrical distribution of the three welding heads counteracts the action of thermal stress among welding points, effectively improves the welding quality of the cylindrical workpiece and improves the product performance; and the technical defects that laser is easily shielded and the welding effect is not uniform in the laser welding process of the double-cylinder component are effectively overcome by the design of the three welding heads and the welding sequence.
Drawings
In order to illustrate the solution of the present application more clearly, the drawings needed for describing the embodiments are briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
FIG. 1 is a schematic view of the overall structure of a cylindrical workpiece welding apparatus 1 according to the present invention;
FIG. 2 is an exploded schematic view of the laser welding apparatus of the present invention;
FIG. 3 is a schematic view of the pressing mechanism of the present invention;
FIG. 4 is a schematic structural diagram of a jig according to the present invention;
FIG. 5 is a schematic view of the overall structure of the welding apparatus for cylindrical workpieces of FIG. 2;
FIG. 6 is a schematic view of a double cylindrical workpiece configuration;
FIG. 7 is a schematic structural diagram of a jig according to the present invention;
FIG. 8 is a view showing positional relationships among respective structures in the first welding in the laser welding method of the present invention;
FIG. 9 is a diagram showing the positional relationship of the respective structures in the second welding in the laser welding method of the present invention;
FIG. 10 is a diagram showing the sequence and relationship of the rotation of the workpiece in example 2 of the laser welding method of the present invention.
Reference numerals: the device comprises a workpiece welding device-100, a workpiece-200, a workbench-10, a laser welding device-20, a jig mechanism-30, a rotary platform-301, a welding head-201, a linear electric platform 302, a clamp-303, a driving assembly 3021, a guide rail assembly-3022, a first welding head-2011, a second welding head-2012, a third welding head-2013, a pressing mechanism-304, a pressing head-3041, a workpiece base 2001, a first cylinder body part-2002, a second cylinder body part-2003, a mounting hole-2004, an upper step block-2005, a lower step block-2006, a welding head mounting base-202, an X-axis fine adjustment platform-203, a Y-axis fine adjustment platform-204, a Z-axis fine adjustment platform-205, a reinforcing rib-206, a fine adjustment platform adapter plate-207, a fine adjustment platform adapter plate-205, a welding head-, The device comprises a Z-axis fine adjustment platform mounting plate-208, a welding head fixing plate-209, a welding head adjusting plate-2091, a pressing mechanism base-3042, an oil pressure buffer assembly-3043, a pressing head guide rail assembly-3044, an adapter plate-3045, a compression spring-3046, a pressing head mounting base-3047, a cylinder assembly-3048, a jig base-305, a limiting assembly-306, a jig guide rail assembly-307, a product fixing base-308 and a jig cylinder assembly-309.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
Example 1: as shown in fig. 1 to 7, a work welding apparatus 100, a work 200 including at least one cylindrical member 2002 to be welded, the work welding apparatus 100 including a table 10, a laser welding device 20, and a jig mechanism 30; the jig mechanism 30 is fixedly installed on the workbench 10, the jig mechanism 30 includes a rotary platform 301, and the rotary platform 301 is used for driving the workpiece 200 to rotate;
the laser welding devices 20 are provided with three, and each laser welding device 20 is arranged on the workbench 10 and positioned around the jig mechanism 30; the laser welding device 20 is provided with welding heads 201, and the welding heads 201 are distributed at equal intervals, and the preferred distribution mode of the welding heads 201 is as follows: the three groups of welding heads 201 form an included angle of 120 degrees with each other; and the intersection point of the laser emission directions of the respective welding heads 201 is located on the rotation axis of the rotary platform 301, and the rotary platform 301 is coaxial with one cylindrical member 2002 in the workpiece 200 when welding the workpiece.
As shown in fig. 3, the workpiece welding apparatus 100 further includes a pressing mechanism 304, the pressing mechanism 304 is disposed on the workbench 10, the pressing mechanism 304 includes a pressing head 3041, the pressing head 3041 is coaxial with the rotary platform 301, and the pressing head 3041 is used for pressing the workpiece 200.
Preferably, the pressing mechanism 304 is located between two of the laser welding apparatuses 20 or between two of the welding heads 201.
Preferably, the pressing mechanism 304 further includes a pressing mechanism base 3042, an oil buffer assembly 3043, a pressing head guide rail assembly 3044, an adapter plate 3045, a compression spring 3046, a pressing head mounting base 3047 and a cylinder assembly 3048;
a hydraulic buffer assembly 3043 is mounted on a sidewall of the hold-down mechanism base 3042, a hold-down head rail assembly 3044 is mounted along the sidewall of the hold-down mechanism base 3042, and the hold-down head rail assembly 3044 is disposed above the hydraulic buffer assembly 3043;
the adapter plate 3045 is connected to a compression head rail assembly 3044, the compression head mounting base 3047 is connected to the adapter plate 3045, the compression head 3041 is mounted on the compression head mounting base 3047, and a compression spring 3046 is mounted between the compression head mounting base 3047 and the compression head 3041;
the cylinder assembly 3048 is disposed on the top of the pressing mechanism base 3042, and a piston rod of the cylinder assembly 3048 is connected to the adaptor plate 3045.
As shown in fig. 4, preferably, the jig mechanism 30 further includes a linear electric platform 302 and a clamp 303, the linear electric platform 302 includes a driving assembly 3021 and a guide rail assembly 3022, the clamp 303 is used for fixing the workpiece 200 on the rotary platform 301, the rotary platform 301 is slidably disposed on the worktable 10 through the guide rail assembly 3022, and the driving assembly 3021 is used for driving the guide rail assembly 3022 to move along the linear guide rail.
Preferably, the fixture 303 comprises a fixture base 305, a limiting component 306, a fixture guide rail component 307, a product fixing seat 308 and a fixture cylinder component 309; the linear electric platform 302 is responsible for conveying the workpiece 200 to a welding station, conveying the workpiece to a material taking and loading position after welding is finished, and driving a ball screw to move by a servo motor; the rotary platform 301 is responsible, in part, for the rotational positioning of the workpiece 200 and the positioning of the fixture 303. The fixture 303 provides for securing and positioning of the workpiece 200. The jig base 305 is installed on the rotary platform 301, the limiting component 306 and the product fixing base 308 are arranged on the jig base 305, the limiting component 306 is used for limiting the workpiece 200 installed on the product fixing base 308, the jig air cylinder component 309 is arranged on the side face of the jig base 305, and the jig air cylinder component 309 is used for adjusting the position of the product fixing base 308 in the direction perpendicular to the rotary shaft of the rotary platform 301.
As shown in fig. 2, preferably, the laser welding apparatus 20 further includes a welding head mounting base 202, an X-axis fine adjustment platform 203, a Y-axis fine adjustment platform 204, a Z-axis fine adjustment platform 205, a reinforcing rib 206, a fine adjustment platform adapter plate 207, a Z-axis fine adjustment platform mounting plate 208, a welding head fixing plate 209, and a welding head adjusting plate 2091;
the welding head mounting base 202 is fixedly connected with the workbench 10, the X-axis fine adjustment platform 203 is arranged at the top of the welding head mounting base 202, and the Y-axis fine adjustment platform 204 is arranged above the X-axis fine adjustment platform 203 and connected with the X-axis fine adjustment platform 203;
a fine-tuning platform adapter plate 207 is fixedly arranged at the top of the Y-axis fine-tuning platform 204, a Z-axis fine-tuning platform mounting plate 208 is vertically arranged on the fine-tuning platform adapter plate 207, a Z-axis fine-tuning platform 205 is arranged on the Z-axis fine-tuning platform mounting plate 208, and a reinforcing rib 206 is arranged at the back of the Z-axis fine-tuning platform mounting plate 208 and is fixedly connected with the fine-tuning platform adapter plate 207;
the bonding head 201 is connected to the bonding head fixing plate 209 via the bonding head adjusting plate 2091, and the bonding head fixing plate 209 is connected to the Z-axis fine adjustment stage 205. The welding head fixing plate 209 is provided with a positioning pin (not shown), the middle of the welding head adjusting plate 2091 is provided with a pin hole corresponding to the positioning pin, and the welding head 201 is fixed on the welding head adjusting plate 2091 and can rotate freely along with the welding head adjusting plate 2091 along the positioning pin, so that the laser incident angle during welding of the welding head is adjusted, and the welding head is fixed on the welding head fixing plate 209 through a screw after the position is adjusted. .
According to the structural arrangement of the laser welding device 20, the position of the welding head 201 in the spatial X-axis, Y-axis and Z-axis directions can be adjusted to adapt to welding of products with different sizes.
As shown in FIG. 6, in one embodiment, the workpiece 200 includes a workpiece base 2001, a first cylindrical member 2002, a second cylindrical member 2003; the workpiece base 2001 is provided with two mounting holes 2004, the two mounting holes 2004 are adapted to the cylinder outer diameters of the first cylinder member 2002 and the second cylinder member 2003, the first cylinder member 2002 and the second cylinder member 2003 are both provided with upper step blocks 2005 and lower step blocks 2006, and the lower step blocks 2006 are annular.
The embodiment can realize the welding processing of a single and a plurality of cylindrical part workpieces sharing the same base, and the uniformly distributed welding heads balance the thermal stress action on adjacent welding points, so that the workpieces can achieve a better welding effect; the welding precision machining efficiency of the workpiece is improved by the aid of the design of jig structures such as the guide rail and the linear electric platform.
Example 2: a method of using the above-described workpiece welding apparatus 10, comprising the steps of:
s1, initializing and setting working parameters of the workpiece welding equipment 100, wherein the working parameters comprise preset parameters of the laser welding device 20 and preset parameters of the jig mechanism 30;
s2, fixing the workpiece 200 to be welded on the jig mechanism 30, and enabling a cylindrical part 2002 to be welded on the workpiece 200 to be coaxial with the rotating platform 301;
s3, the jig mechanism 30 moves the workpiece 200 to be welded to a target position according to preset parameters;
s4, starting three laser welding devices 20 simultaneously, and welding the cylindrical component 2002 to be welded on the workpiece 200 by each laser welding device 20 simultaneously cooperating with the fixture mechanism 30 according to the working parameters, wherein the parameters of the laser welding device 20 include the number of times of welding performed by the laser welding device 20, and the parameters of the fixture mechanism 30 include the rotation angle of the rotating platform 301 in the interval between two adjacent welding operations;
the specific welding process of step S4 is as follows:
step S411: after step S3 is completed, three laser welding devices 20 are started, and the cylindrical member 2002 pressed by the pressing mechanism 304 is welded by each laser welding device 20 for the first time;
step S412: the pressing mechanism 304 is loosened, the rotating platform 301 drives the workpiece 200 to rotate counterclockwise by an angle α, the size of α is determined according to the welding process of the actual product, then the pressing mechanism 304 presses the cylindrical component 2002 welded in the step S411 again, and at this time, the cylindrical component 2002 welded in the step S411 is still coaxial with the rotating platform 301 and the pressing head 3041;
step S413: starting the three laser welding devices 20, and simultaneously performing second welding on the cylindrical component 2002 pressed by the pressing mechanism 304 by each laser welding device 20;
step S414: the pressing mechanism 304 is loosened, the rotating platform 301 drives the workpiece 200 to rotate clockwise by an angle of 2 α, and the pressing mechanism 304 presses the welded cylindrical component 2002 in the step S413 again;
step S415: starting the three laser welding devices 20, and simultaneously performing third welding on the cylindrical component 2002 pressed by the pressing mechanism 304 by each laser welding device 20; to this end, three welding operations for one of the cylindrical members 2002 of the double-cylindrical workpiece 200 are completed; as shown in fig. 8, it is a schematic view of the rotation angle of the first cylindrical member 2002 in three welds.
Step S416: after step S415 is completed, the pressing mechanism 304 is released, the linear electric platform 302 is started, the workpiece 200 moves to a preset position along the forward direction of the linear electric platform 302, and the pressing mechanism 304 performs a pressing operation on another cylindrical component 2003 of the workpiece 200 that is not welded; the cylindrical member 2003 of the workpiece 200 which is not welded at this time is coaxial with the rotary platform 301 and the pressing head 3041;
step S417: step S411-step S415 are executed in sequence; as shown in fig. 9, it is a schematic view of the rotation angle of the second cylindrical member 2003 in three times of welding, and thus, the welding operation for 6 welding points of two cylinders of the double-cylindrical workpiece 200 to be welded is completed.
S5, after the welding is completed, the three laser welding devices 20 are closed.
Preferably, the workpiece welding apparatus 100 further comprises a hold-down mechanism 304, and the method further comprises:
before each welding operation, the workpiece 200 reaching the target position is subjected to a pressing operation by the pressing mechanism 304; and releasing the hold-down mechanism 304 after each welding operation is completed.
Preferably, the workpiece 200 welded by the workpiece welding method comprises at least two cylindrical components with the same welding base;
the method further comprises the following steps:
s6, after the welding of one cylindrical member 2002 is completed in step S5, the position of the workpiece 200 is adjusted by the jig mechanism 30 so that the other cylindrical member 2003 to be welded is coaxial with the rotary table 301, and steps S3 to S5 are re-executed;
and S7, repeatedly executing the step S6 until all the cylindrical parts to be welded are welded. .
So far, the product welding is finished, the linear electric platform 302 moves to the blanking position, blanking and reloading are carried out, and a new cycle is started.
Example 3: in another embodiment, as shown in fig. 10, steps S416 and S417 in a method employing the above-described workpiece welding apparatus 10 are implemented instead of steps S4161 and S4171, respectively, as follows:
step S4161: after step S415 is completed, the pressing mechanism 304 is released, the rotating platform 301 rotates clockwise by 60- α °, the micro cylinder is ventilated, the fixing seat is pushed to the uppermost side, and after the fixing seat is in place, the pressing mechanism 304 presses the cylindrical component 2003 which is not welded on the right side, and at this time, the cylindrical component 2003 which is not welded on the workpiece 200 is coaxial with the rotating platform 301 and the pressing head 3041;
step S4171: step S411-step S415 are executed in sequence; as shown in fig. 10, it is a schematic view of the rotation angle of the second cylindrical member 2003 in three times of welding, and thus, the welding operation for 6 welding points of two cylinders of a to-be-welded double-cylindrical workpiece 200 is completed.
The working principle is as follows: and three groups of laser welding devices are arranged simultaneously, so that the cylindrical workpiece can be subjected to welding processing of three welding spots simultaneously, and the three laser welding devices are uniformly distributed, so that the thermal stress on the cylindrical workpiece is uniform. The mode of welding the double-cylinder workpiece successively and respectively is adopted, and the problems of uneven stress, blocked laser and the like easily caused in the laser welding processing of the double-cylinder workpiece are solved through the reasonable matching of the rotating, pressing and welding devices.
Has the advantages that: the embodiment is a welding method suitable for the workpiece welding equipment, which performs welding mode of welding workpieces of double-cylinder parts or multiple-cylinder parts with the same base one by one and separately welding adjacent welding spots, so that the workpieces can achieve uniform welding and the welding effect of stable workpiece performance.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.
Claims (10)
1. A workpiece welding device is characterized by comprising a workbench, a laser welding device and a jig mechanism;
the jig mechanism is fixedly arranged on the workbench and comprises a rotating platform, and the rotating platform is used for driving the workpiece to rotate;
the three laser welding devices are arranged on the workbench and are positioned around the jig mechanism; the laser welding device is provided with welding heads, the welding heads are distributed at equal intervals, the joint point of the laser emitting direction of each welding head is positioned on a rotating shaft of the rotating platform, and the rotating platform is coaxial with one cylindrical part in the workpieces when the workpieces are welded.
2. The workpiece welding apparatus of claim 1, wherein: the equipment further comprises a pressing mechanism, the pressing mechanism is arranged on the workbench and comprises a pressing head, the pressing head is coaxial with the rotating platform, and the pressing head is used for pressing the workpiece.
3. The workpiece welding apparatus of claim 2, wherein: the pressing mechanism is positioned between two of the laser welding devices or between two of the welding heads.
4. The workpiece welding apparatus of claim 2, wherein: the pressing mechanism further comprises a pressing mechanism base, an oil buffer assembly, a pressing head guide rail assembly, an adapter plate, a compression spring, a pressing head mounting seat and a cylinder assembly;
the oil buffer assembly is arranged on the side wall of the pressing mechanism base, the pressing head guide rail assembly is arranged along the side wall of the pressing mechanism base, and the pressing head guide rail assembly is arranged above the oil buffer assembly;
the adapter plate is connected with the pressing head guide rail assembly, the pressing head mounting seat is connected with the adapter plate, the pressing head is mounted on the pressing head mounting seat, and a compression spring is mounted between the pressing head mounting seat and the pressing head;
the air cylinder assembly is arranged at the top of the pressing mechanism base, and a piston rod of the air cylinder assembly is connected with the adapter plate.
5. The workpiece welding apparatus according to any one of claims 1 to 4, wherein: the jig mechanism further comprises a linear electric platform and a clamp, the linear electric platform comprises a driving assembly and a guide rail assembly, the clamp is used for fixing the workpiece on the rotating platform, the rotating platform is arranged on the workbench in a sliding mode through the guide rail assembly, and the driving assembly is used for driving the guide rail assembly to move along the linear guide rail.
6. The workpiece welding apparatus of claim 5, wherein: the fixture comprises a fixture base, a limiting component, a fixture guide rail component, a product fixing seat and a fixture cylinder component;
the jig base is installed on the rotary platform, the limiting assembly and the product fixing base are arranged on the jig base, the limiting assembly is used for limiting the workpiece installed on the product fixing base, the jig air cylinder assembly is arranged on the side face of the jig base, and the jig air cylinder assembly is used for adjusting the position of the product fixing base in the direction perpendicular to the rotary shaft of the rotary platform.
7. The workpiece welding apparatus of claim 6, wherein: the laser welding device also comprises a welding head mounting base, an X-axis fine tuning platform, a Y-axis fine tuning platform, a Z-axis fine tuning platform, a reinforcing rib, a fine tuning platform adapter plate, a Z-axis fine tuning platform mounting plate, a welding head fixing plate and a welding head adjusting plate;
the welding head mounting base is fixedly connected with the workbench, the X-axis fine adjustment platform is arranged at the top of the welding head mounting base, and the Y-axis fine adjustment platform is arranged above the X-axis fine adjustment platform and connected with the X-axis fine adjustment platform;
the fine tuning platform adapter plate is fixedly arranged at the top of the Y-axis fine tuning platform, the Z-axis fine tuning platform mounting plate is vertically arranged on the fine tuning platform adapter plate, the Z-axis fine tuning platform is arranged on the Z-axis fine tuning platform mounting plate, and the reinforcing rib is arranged at the back of the Z-axis fine tuning platform mounting plate and is fixedly connected with the fine tuning platform adapter plate;
the welding head is connected with the welding head fixing plate through the welding head adjusting plate, and the welding head fixing plate is connected with the Z-axis fine adjustment platform.
8. Workpiece welding method applied to a workpiece welding apparatus according to any of claims 1-7, characterized by the steps of:
s1, initializing and setting working parameters of the workpiece welding equipment, wherein the working parameters comprise preset parameters of a laser welding device and preset parameters of a jig mechanism;
s2, fixing the workpiece to be welded on the jig mechanism, and enabling a cylindrical component to be welded on the workpiece to be coaxial with the rotating platform;
s3, the jig mechanism moves the workpiece to be welded to a target position according to preset parameters;
s4, starting the three laser welding devices simultaneously, and welding the cylindrical parts to be welded on the workpiece by the laser welding devices simultaneously cooperating with the jig mechanism according to the working parameters, wherein the parameters of the laser welding devices comprise the welding times of the laser welding devices, and the parameters of the jig mechanism comprise the rotation angle of the rotary platform in the interval between two adjacent welding operations;
and S5, closing the three laser welding devices after welding.
9. The workpiece welding method of claim 8, wherein when the workpiece welding apparatus further comprises a pressing mechanism, the method further comprises:
before each welding operation, the workpiece reaching the target position is pressed by the pressing mechanism; and releasing the pressing mechanism after each welding operation is completed.
10. The workpiece welding method according to claim 8 or 9, characterized in that: when the workpiece comprises at least two cylindrical parts having the same welding base; the method further comprises the following steps:
s6, after welding of one cylindrical component is completed in the step S5, adjusting the position of the workpiece through the jig mechanism, enabling the other cylindrical component to be welded to be coaxial with the rotating platform, and re-executing the steps S3 to S5;
and S7, repeatedly executing the step S6 until all the cylindrical parts to be welded are welded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911007913.5A CN112775544A (en) | 2019-10-22 | 2019-10-22 | Workpiece welding equipment and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911007913.5A CN112775544A (en) | 2019-10-22 | 2019-10-22 | Workpiece welding equipment and method |
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| US20170348800A1 (en) * | 2016-06-01 | 2017-12-07 | Tyco Electronics (Shanghai) Co. Ltd. | Welding System and Method |
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| CN204108546U (en) * | 2014-09-23 | 2015-01-21 | 芜湖恒耀汽车零部件有限公司 | A kind of double automatic welding machine tool with vertical correction device |
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