Peripheral equal division laser welding equipment and method similar to turbine blade

Abstract

The invention discloses a laser welding device and method similar to turbine blade circumference equal division, and relates to the technical field of laser welding, the laser welding device comprises a device body, an equal-angle division rotating mechanism, a pressing two-way movement mechanism and a double-pendulum automatic welding head, and an XY-axis movement mechanism is installed on the device body; the equal-angle segmentation rotating mechanism is arranged on the upper side of the XY-axis movement mechanism through the linear reciprocating movement mechanism and used for clamping a first to-be-welded part. The pressing bidirectional movement mechanism is arranged on the upper side of the XY-axis movement mechanism and comprises clamping parts which are symmetrically arranged, and the clamping parts are connected with a moving part; the double-pendulum automatic welding head is connected with the lifting mechanism and used for conducting welding operation when the first to-be-welded part and the second to-be-welded part move to the to-be-welded position. According to the invention, the automatic precision welding of the circumference of the similar turbine blade on the similar turbine main body circumference piece can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to a laser welding device and method similar to a turbine blade circumference-dividing laser welding device. Background Art

[0002] In the laser welding process, in order to ensure the welding quality, on the one hand, it is necessary to use a laser with good beam quality and laser output power stability, and a light guide and focusing system composed of high-quality and high-stability optical components; on the other hand, it is necessary to ensure the processing and assembly accuracy of the workpiece and the accurate positioning and reliable clamping of the welding fixtures to ensure welding accuracy and effectively prevent and reduce thermal deformation. Although laser welding is currently widely used, there are still certain welding defects, especially in the process of laser welding of circumferentially divided sheet parts such as turbine blades. In the process of similar turbine main body circumferential parts, there are related problems such as weld deviation and poor weld formation caused by factors such as inaccurate external positioning and unstable manual operation. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a laser welding device and method for equally dividing the circumference of turbine blades, which solves the problems of weld deviation and poor weld formation caused by inaccurate external positioning, unstable manual operation and other factors, and realizes automatic precision welding of the circumference of turbine blades on circumferential parts similar to those of the turbine body.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0005] In a first aspect, an embodiment of the present invention provides a laser welding device similar to a turbine blade circumference equally divided laser welding device, comprising:

[0006] The main body of the device is provided with an XY axis motion mechanism;

[0007] An equal-angle division rotating mechanism is arranged on the upper side of the XY axis motion mechanism through a linear reciprocating motion mechanism, and the equal-angle division rotating mechanism is used to clamp the first workpiece to be welded;

[0008] A clamping bidirectional motion mechanism is arranged on the upper side of the XY axis motion mechanism, and the clamping bidirectional motion mechanism includes symmetrically arranged clamping components, the clamping components are connected to the moving components, and the moving components are used to drive the clamping components to move along the X direction, and the clamping components can be pressed down to clamp the second workpiece to be welded;

[0009] The double-swing automatic welding head is connected to the lifting mechanism, and is used for performing welding operations when the first workpiece to be welded and the second workpiece to be welded are moved to the positions to be welded.

[0010] As a further implementation, the clamping bidirectional motion mechanism further includes a mounting seat, and the clamping component is symmetrically arranged relative to the mounting seat.

[0011] As a further implementation, the moving component includes an X-direction cylinder, and the clamping component includes a Z-direction cylinder and a clamping sheet connected to the Z-direction cylinder, and a welding placement area is formed between the clamping sheets;

[0012] The cylinder body of the Z-direction cylinder is connected to the cylinder rod of the X-direction cylinder.

[0013] As a further implementation, the mounting seat is connected to a pressing plate, and the clamping sheet can move toward the pressing plate to clamp the second workpiece to be welded.

[0014] As a further implementation, the equal-angle division rotation mechanism includes a rotation drive assembly and a pneumatic chuck, and the pneumatic chuck is connected to the rotation drive assembly;

[0015] The rotary drive assembly is installed at a set angle, and is used to drive the pneumatic chuck to rotate at an equal angle.

[0016] As a further implementation method, the linear reciprocating motion mechanism is used to drive the equal-angle division rotating mechanism to move along the X direction;

[0017] The rotary drive assembly is installed on the upper side of the linear reciprocating motion mechanism through a mechanism connector.

[0018] As a further implementation method, the lifting mechanism is installed on the upper side of the equipment body through a support seat, and the double-swing automatic welding head is located on one side of the equal-angle division rotating mechanism.

[0019] As a further implementation, a cold water system is also included, and the cold water system is used to cool the double-swing automatic welding head and the laser in the equipment body.

[0020] In a second aspect, an embodiment of the present invention further provides a laser welding method similar to a turbine blade circumference equally divided method, using the laser welding device, comprising:

[0021] Install the first workpiece to be welded onto the pneumatic chuck of the equal-angle division rotating mechanism; place the second workpiece to be welded into the welding placement area of ​​the clamping bidirectional motion mechanism, and clamp the second workpiece to be welded;

[0022] The first workpiece to be welded moves along the X direction along with the equal-angle division rotating mechanism, and the second workpiece to be welded moves along the X direction under the action of the clamping bidirectional motion mechanism until the first workpiece to be welded contacts the second workpiece to be welded;

[0023] The double-swing automatic welding head performs welding operations on the first workpiece to be welded and the second workpiece to be welded.

[0024] As a further implementation method, the XY axis motion mechanism drives the equal angle division rotation mechanism and the clamping bidirectional motion mechanism to move as a whole, and the lifting mechanism drives the double pendulum automatic welding head to move in coordination, so that the double pendulum automatic welding head corresponds to the position to be welded.

[0025] The beneficial effects of the present invention are as follows:

[0026] (1) The laser welding equipment of the present invention comprises an equal-angle division rotating mechanism, a clamping bidirectional motion mechanism, an XY axis motion mechanism, a double-pendulum automatic welding head, a lifting mechanism, etc. The equal-angle division rotating mechanism is used to fix a circumferential part similar to a turbine body, and the clamping bidirectional motion mechanism is used to fix a part similar to a turbine blade. The equal-angle division rotating mechanism drives the fixed circumferential part similar to a turbine body to rotate. The clamping bidirectional motion mechanism places a part similar to a turbine blade at a time, and the double-pendulum automatic welding head realizes automatic welding of a circumferential part similar to a turbine body with multiple parts similar to turbine blades, thereby improving welding efficiency; the equal-angle division rotating mechanism and the clamping bidirectional motion mechanism can move along the X-axis and the Y-axis, and the double-pendulum automatic welding head can move along the Z-axis. Through the coordinated movement of the three axes of X, Y, and Z, automatic precision welding of a circumference similar to a turbine blade on a circumferential part similar to a turbine body is realized.

[0027] (2) The equal-angle division rotating mechanism of the present invention clamps the circumferential part similar to the turbine body through a pneumatic chuck, and the clamping bidirectional motion mechanism clamps the turbine blade part through the cooperation of the X-axis cylinder and the Z-axis cylinder; the circumferential part similar to the turbine body can move toward the clamping bidirectional motion mechanism along with the equal-angle division rotating mechanism under the action of the linear reciprocating motion mechanism, and the turbine blade part can move toward the side where the equal-angle division rotating mechanism is located under the action of the X-axis cylinder, thereby realizing the precise positioning of the two parts to be welded, and at the same time can be clamped stably to avoid weld deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0029] Figure 1 is an overall schematic diagram of a laser welding device according to one or more embodiments of the present invention;

[0030] Figure 2 The invention is a schematic diagram of an equal angle division rotating mechanism, a clamping bidirectional motion mechanism, and a double pendulum automatic welding head according to one or more embodiments. Figure 1 ;

[0031] Figure 3The invention is a schematic diagram of an equal angle division rotating mechanism, a clamping bidirectional motion mechanism, and a double pendulum automatic welding head according to one or more embodiments. Figure 2 .

[0032] Among them, 1. Equipment body, 2. Equal-angle division rotating mechanism, 3. Clamping bidirectional motion mechanism, 4. Lifting mechanism, 5. XY axis motion mechanism, 6. Cold water system, 7. X axis module, 8. Y axis module, 9. Mounting table, 10. Linear reciprocating motion mechanism, 11. Mechanism connector, 12. Pneumatic chuck, 13. Mounting seat, 14. Support seat, 15. X-axis cylinder, 16. Z-axis cylinder, 17. Connecting plate, 18. Pressing plate, 19. Clamping sheet, 20. Welding area to be placed, 21. Lifting module, 22. Double-swing automatic welding head, 23. First part to be welded, 24. Second part to be welded. DETAILED DESCRIPTION

[0033] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0034] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0035] Embodiment 1:

[0036] In order to solve the problems of weld deviation, poor weld formation, etc. in the process of laser welding of circularly divided sheet parts similar to turbine blades in the prior art, similar to the circumferential parts of the turbine body, this embodiment provides a laser welding device for equally divided circumference similar to turbine blades.

[0037] like Figure 1-Figure 3 As shown, the laser welding equipment is used for equi-angle segmented welding of a circumferential part similar to a turbine body and a plurality of parts similar to turbine blades. For ease of description, in this embodiment, the circumferential part similar to a turbine body is referred to as the first part to be welded 23, and the part similar to a turbine blade is referred to as the second part to be welded 24.

[0038] The laser welding equipment includes an equipment body 1, and an equal-angle division rotating mechanism 2, an XY-axis motion mechanism 5, a clamping bidirectional motion mechanism 3, a lifting mechanism 4, and a double-pendulum automatic welding head 22 installed on the equipment body 1. The laser is emitted by the laser in the equipment body 1 and transmitted to the double-pendulum automatic welding head 22 through an optical fiber line; the laser welding equipment also includes a cold water system 6 for cooling the laser and the double-pendulum automatic welding head 22.

[0039] The XY axis motion mechanism 5 is fixed on the workbench of the equipment body 1, and includes an X axis module 7 and a Y axis module 8. The Y axis module 8 is installed on the upper side of the X axis module 7, and the two-dimensional motion of the upper mechanism is realized by the combination of the X axis module 7 and the Y axis module 8. A mounting table 9 is fixed on the upper side of the Y axis module 8, and the mounting table 9 is parallel to the workbench. The clamping bidirectional motion mechanism 3 and the equal angle division rotation mechanism 2 are fixed on the upper side of the mounting table 9, and the lifting mechanism 4 is fixed on the workbench. The double pendulum automatic welding head 22 is connected to the lifting mechanism 4. The equal angle division rotation mechanism 2 is used to clamp the first workpiece 23 to be welded. After the clamping bidirectional motion mechanism 3 clamps and fixes the second workpiece 24 to be welded, the double pendulum automatic welding head 22 welds the first workpiece 23 to be welded and the second workpiece 24 to be welded.

[0040] According to the direction shown in the view, the equal-angle division rotating mechanism 2 is located on the left side of the clamping bidirectional motion mechanism 3. The equal-angle division rotating mechanism 2 includes a rotating drive assembly and a pneumatic chuck 12. The pneumatic chuck 12 is connected to the rotating drive assembly, and the pneumatic chuck 12 is driven to rotate by the rotating drive assembly. The rotating drive assembly is rotatably mounted on the front side of the mechanism connecting member 11 (towards the side of the clamping bidirectional motion mechanism 3). The rotating drive assembly is connected to the mechanism connecting member 11 through a rotating shaft, and the axial direction of the rotating shaft is along the X direction, so that the installation angle of the pneumatic chuck 12 can be adjusted. A linear reciprocating motion mechanism 10 is connected between the mechanism connecting member 11 and the mounting table 9, so that the equal-angle division rotating mechanism 2 can move in the positive and negative directions along the X axis to achieve position switching.

[0041] In this embodiment, the rotary drive assembly includes a servo motor and a planetary reducer. The servo motor is connected to the pneumatic chuck 12 through the planetary reducer. The first welded part 23 is fixed on the pneumatic chuck 12. Under the drive of the servo motor, it realizes equal-angle segmented rotation to meet the precise positioning of each welding position similar to the turbine body. The mechanism connector 11 is a plate. It can be understood that in other embodiments, the rotary drive assembly can also use other rotary power components. The linear reciprocating motion mechanism 10 can realize linear motion by a cylinder or a hydraulic cylinder, or a motor-driven ball screw mechanism, etc.

[0042] like Figure 2 and Figure 3As shown, the clamping bidirectional motion mechanism 3 includes a mounting seat 13, and a clamping component and a moving component are symmetrically installed on the front and rear sides of the mounting seat 13. The clamping component is connected to the moving component, and the moving component can drive the clamping component to move along the X direction, and the clamping component can press down to clamp the second part to be welded. In this embodiment, the moving component includes an X-direction cylinder 15, and the clamping component includes a Z-direction cylinder 16 and a clamping plate 19 connected to the Z-direction cylinder 16; the cylinder body of the X-direction cylinder 15 is fixed to the side of the mounting seat 13, and the cylinder rod of the X-direction cylinder 15 is connected to the cylinder body of the Z-direction cylinder 16 through a connecting plate 17, and the top of the cylinder rod of the Z-direction cylinder 16 is connected to the clamping plate 19, and a welding placement area 20 is formed between the two clamping plates 19.

[0043] The mounting seat 13 is connected to the pressing plate 18, and the pressing plate 18 extends to the left relative to the mounting seat 13. The pressing sheet 19 is located on the upper side of the pressing plate 18. In this embodiment, the pressing plate 18 is a rectangular plate, and one end of the pressing plate 18 is fixed to the mounting seat 13. There is a pressing sheet 19 on each of the two pressing plates 18. The Z-direction cylinder 16 drives the pressing sheet 19 to move toward the pressing plate 18, and the pressing effect on the second to-be-welded part 24 is achieved through the pressing sheet 19 and the pressing plate 18. The Y-direction cylinder drives the second to-be-welded part 24 to move to the left to-be-welded position, and enters the to-be-welded state.

[0044] Similar to the turbine body circumferential part, it can move toward the clamping bidirectional motion mechanism 3 along with the equal-angle division rotating mechanism 2 under the action of the linear reciprocating motion mechanism 10, and similar to the turbine blade part, it can move toward the side of the equal-angle division rotating mechanism 2 under the action of the X-axis cylinder 15, so as to achieve precise positioning of the two parts to be welded, and at the same time can clamp stably to avoid weld deviation.

[0045] In this embodiment, the pressing piece 19 is an L-shaped plate, and the pressing piece 19 is installed in a horizontal state. The space between the short ends of the pressing piece 19 is the welding placement area 20.

[0046] The lifting mechanism 4 is arranged on the right side of the mounting seat 13, and includes a support seat 14 and a lifting module 21. The lifting module 21 is installed on the left side of the support seat 14, and the double-swing automatic welding head 22 is connected to the lifting module 21. Among them, the lifting module 21 is a linear motion module, which can realize the Z-axis movement of the double-swing automatic welding head 22. The double-swing automatic welding head 22 is an existing laser welding head, which drives the X-axis and Y-axis vibrating lenses through two motors to realize the swing of the laser beam, thereby expanding the weld area.

[0047] When the first workpiece 23 and the second workpiece 24 to be welded enter the state to be welded, the three axes X, Y, and Z move in coordination to achieve automatic precision welding of multiple equally divided angles of the circumference similar to turbine blades on a circumferential part similar to the turbine body.

[0048] The laser welding equipment of this embodiment can perform automated welding work similar to turbine body circumferential parts and turbine blade parts. The entire welding process does not require manual spot welding and fixation, and does not require manual auxiliary welding, which improves welding quality and ensures welding accuracy.

[0049] Embodiment 2:

[0050] This embodiment provides a laser welding method similar to turbine blade circumference equal division, using the laser welding equipment described in Example 1, and the welding workpiece is mainly similar to the turbine body circumference part (first welding part 23) and multiple turbine blade parts (second welding parts 24) of equal angle division precision work welding, the specific welding method is:

[0051] First, turn on all switches of the equipment, debug each part, and start welding after the temperature displayed by the cold water system 6 reaches the requirement.

[0052] The first welded part 23 is mounted on the pneumatic chuck 12 in the equal angle division rotating mechanism 2. At this time, the equal angle division rotating mechanism 2 is located at the left position under the action of the linear reciprocating motion mechanism 10. The second welded part 24 is placed in the welding placement area 20. The Z-direction cylinder 16 drives the clamping plate 19 to move downward, and cooperates with the pressing plate 18 to clamp and fix the second welded part 24. The X-direction cylinder 15 drives the Z-direction cylinder 16, the dynamic clamping plate 19, the welding placement area 20 and other parts to move to the left as a whole to the welding position.

[0053] The equal-angle division rotating mechanism 2 moves to the right position under the action of the linear reciprocating motion mechanism 10, and the first to-be-welded part 23 and the second to-be-welded part 24 are in contact and fixed in relative position.

[0054] Click the start welding button, the X-axis module 7 and the Y-axis module 8 in the XY-axis motion mechanism 5 drive the equal-angle division rotating mechanism 2 and the clamping bidirectional motion mechanism 3 to move as a whole, and cooperate with the three-axis movement of the double-swing automatic welding head 22 driven by the lifting module 21. At the same time, the double-swing automatic welding head 22 emits light to realize the automated precision welding of a circumferential part similar to the turbine body and a part similar to the turbine blade.

[0055] After welding is completed, the linear reciprocating motion mechanism 10 drives the equal angle division rotating mechanism 2 and other parts to move to the left end position as a whole; the Z-direction cylinder 16 drives the clamping plate 19 to move upward, and the clamping plate 19 is separated from the welded workpiece. The X-direction cylinder 15 drives the Z-direction cylinder 16, the clamping plate 19, the welding placement area 20 and other parts to move to the right position as a whole; at this time, the whole set of welding process is completed.

[0056] The equal-angle division rotating mechanism 2 rotates to a set fixed angle, places the second part to be welded 24 in the welding placement area 20, and repeats the above process; completing the entire automated precision welding work of the turbine body circumferential part and all turbine blade parts.

[0057] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A laser welding device similar to a turbine blade circumference equalization device, characterized in that: include: The main body of the device is provided with an XY axis motion mechanism; An equal-angle division rotating mechanism is arranged on the upper side of the XY axis motion mechanism through a linear reciprocating motion mechanism, and the equal-angle division rotating mechanism is used to clamp the first workpiece to be welded; A clamping bidirectional motion mechanism is arranged on the upper side of the XY axis motion mechanism, and the clamping bidirectional motion mechanism includes symmetrically arranged clamping components, the clamping components are connected to the moving components, and the moving components are used to drive the clamping components to move along the X direction, and the clamping components can be pressed down to clamp the second workpiece to be welded; The double-swing automatic welding head is connected to the lifting mechanism, and is used for performing welding operations when the first workpiece to be welded and the second workpiece to be welded are moved to the positions to be welded.

2. A laser welding device similar to a turbine blade circumference equally divided according to claim 1, characterized in that: The clamping bidirectional motion mechanism further comprises a mounting seat, and the clamping component is symmetrically arranged relative to the mounting seat.

3. A laser welding device similar to turbine blade circumference equalization according to claim 2, characterized in that: The moving component includes an X-direction cylinder, and the clamping component includes a Z-direction cylinder and a clamping sheet connected to the Z-direction cylinder, wherein a welding area to be placed is formed between the clamping sheets; The cylinder body of the Z-direction cylinder is connected to the cylinder rod of the X-direction cylinder.

4. A laser welding device similar to turbine blade circumference equalization according to claim 3, characterized in that: The mounting seat is connected to a pressing plate, and the clamping sheet can move toward the pressing plate to clamp the second workpiece to be welded.

5. The laser welding device similar to turbine blade circumference equalization according to claim 1 is characterized in that: The equal-angle division rotation mechanism comprises a rotation drive assembly and a pneumatic chuck, wherein the pneumatic chuck is connected to the rotation drive assembly; The rotary drive assembly is installed at a set angle, and is used to drive the pneumatic chuck to rotate at an equal angle.

6. A laser welding device similar to turbine blade circumference equalization according to claim 5, characterized in that: The linear reciprocating motion mechanism is used to drive the equal-angle division rotating mechanism to move along the X direction; The rotary drive assembly is installed on the upper side of the linear reciprocating motion mechanism through a mechanism connector.

7. The laser welding device similar to turbine blade circumference equalization according to claim 1 is characterized in that: The lifting mechanism is installed on the upper side of the equipment body through a support seat, and the double-swing automatic welding head is located on one side of the equal-angle division rotating mechanism.

8. The laser welding device similar to turbine blade circumference equalization according to claim 1 is characterized in that: It also includes a cold water system, which is used to cool the double-swing automatic welding head and the laser in the equipment body.

9. A laser welding method similar to that for dividing the circumference of a turbine blade equally, characterized in that: The laser welding device according to any one of claims 1 to 8 comprises: Install the first workpiece to be welded onto the pneumatic chuck of the equal-angle division rotating mechanism; place the second workpiece to be welded into the welding placement area of ​​the clamping bidirectional motion mechanism, and clamp the second workpiece to be welded; The first workpiece to be welded moves along the X direction along with the equal-angle division rotating mechanism, and the second workpiece to be welded moves along the X direction under the action of the clamping bidirectional motion mechanism until the first workpiece to be welded contacts the second workpiece to be welded; The double-swing automatic welding head performs welding operations on the first workpiece to be welded and the second workpiece to be welded.

10. A method for laser welding similar to turbine blade circumference equalization according to claim 9, characterized in that: The XY axis motion mechanism drives the equal angle division rotation mechanism and the clamping bidirectional motion mechanism to move as a whole, and the lifting mechanism drives the double pendulum automatic welding head to move in coordination, so that the double pendulum automatic welding head corresponds to the position to be welded.

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