A turbine blade assembly bulkhead machining apparatus and method

Abstract

The application discloses a steam turbine blade combined partition plate processing equipment and belongs to the steam turbine blade processing technical field, which comprises a machine tool, a mechanical arm movably connected to the machine tool, a robot cutting machine rotatably connected to the end of the mechanical arm, a positioning assembly rotatably connected to the inside of the machine tool and a deflection assembly rotatably connected to the surface of the machine tool. After the blade root of the stationary blade is clamped in the resistance rod, the electromagnet inside the positioning cylinder is turned on, the other end of the stationary blade is placed on the end surface of the positioning cylinder, the electromagnet inside the positioning cylinder is turned off, the end of the positioning pin is clamped on the surface of the stationary blade, and the fixing of the twelve groups of stationary blades is sequentially completed. The driving source is turned on, the twelve groups of stationary blades are synchronously turned over under the action of the positioning pin, the angles of each group of stationary blades are consistent, the robot cutting machine is turned on, the twelve groups of stationary blades can be synchronously cut, and the processing efficiency of the stationary blades is improved.

Description

Technical Field

[0001] This invention relates to the field of turbine blade processing technology, specifically to a turbine blade assembly partition processing equipment. Background Technology

[0002] A steam turbine blade assembly typically consists of three main parts: an outer diaphragm ring, stationary blades, and an inner diaphragm ring. Its core function is to form a steam flow path, converting the thermal energy of the steam into kinetic energy. Before machining the steam turbine blade assembly diaphragm, the outer diaphragm ring, stationary blades, and inner diaphragm ring need to be preliminarily cut.

[0003] In existing technologies, the surface of stationary blades is typically machined using CNC machine tools to polish and remove oxide scale, achieving the desired surface roughness. While CNC machine tools offer advantages such as energy efficiency, ease of operation, and high machining accuracy, they can only cut one set of stationary blades at a time, resulting in lower machining efficiency. Therefore, a turbine blade assembly diaphragm machining equipment is needed to address these issues. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a turbine blade assembly diaphragm processing equipment to solve the problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A turbine blade assembly diaphragm processing equipment includes: a machine tool, a robotic arm movably connected to the machine tool, and a robotic cutting machine rotatably connected to the end of the robotic arm; the turbine blade assembly diaphragm processing equipment further includes:

[0007] The positioning components are rotatably connected inside the machine tool. There are at least eight sets of positioning components, and each set of positioning components is fixed with a set of stationary blades.

[0008] The deflection assembly is rotatably connected to the surface of the machine tool and to each set of positioning assemblies. It is used to drive each set of stationary blades to deflect synchronously within the machine tool through the positioning assemblies, so as to realize the synchronous processing of multiple sets of stationary blades by the robot cutting machine.

[0009] As a preferred embodiment of the present invention, the positioning assembly includes: a machining cover connected to a machine tool, with a support fixed at its center; a stop rod rotatably connected to the surface of the support, with the root of the stationary blade engaged inside the stop rod; a positioning cylinder rotatably connected to the machining cover, with an electromagnet fixed inside; a sliding pin slidably connected to the inside of the positioning cylinder, with its end connected to the electromagnet via a compression spring; and a positioning pin connected to the other end of the sliding pin, which is engaged on the surface of the stationary blade.

[0010] As a preferred embodiment of the present invention, the abutment is provided with a shaped groove, and the root of the stationary blade is tightly fitted inside the shaped groove.

[0011] As a preferred embodiment of the present invention, the abutment rods are at least eight groups, and are distributed equidistantly on the surface of the bracket in a circular pattern, and the number of the positioning cylinders is the same as the number of the abutment rods.

[0012] As a preferred embodiment of the present invention, the deflection assembly includes: a gear fixed to the outer end of the positioning cylinder; a face gear rotatably connected to the outer surface of the processing cover and meshing with the gear; an abutment post rotatably connected to the processing cover, with the lower side of the face gear rollingly connected to the surface of the abutment post; and a drive source installed inside the machine tool, with the output end of the drive source connected to a drive gear, which meshes with the face gear.

[0013] As a preferred embodiment of the present invention, the turbine blade assembly partition processing equipment further includes a chip removal component, which is rotatably connected inside the machine tool and connected at its end to a deflection component. The chip removal component is used to cooperate with the deflection component to clean the debris on the surface of the machine tool.

[0014] As a preferred embodiment of the present invention, the chip removal assembly includes: an inner rotating ring rotatably connected to the surface of a bracket; a scraper slidably connected to the bottom surface of a processing cover, with one end connected to the surface of the inner rotating ring; a chip collection groove formed on the processing cover, with the other end of the scraper connected to the side of a face gear via a connecting rod; and a chip collection box connected to the processing cover, with its upper side communicating with the chip collection groove and its lower side equipped with a conveying pipe.

[0015] A method for processing a turbine blade assembly diaphragm includes the following steps:

[0016] Step 1: After engaging the blade root of the stationary blade in the stop rod, turn on the electromagnet inside the positioning cylinder, place the other end of the stationary blade on the end surface of the positioning cylinder, turn off the electromagnet inside the positioning cylinder, so that the end of the positioning pin engages with the surface of the stationary blade. Repeat the above steps to complete the fixing of the twelve sets of stationary blades in sequence.

[0017] Step 2: Turn on the drive source so that the twelve sets of stationary blades rotate synchronously under the action of the positioning pins;

[0018] Step 3: Start the robot cutting machine to achieve sequential and synchronous cutting of the twelve sets of stationary blades.

[0019] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: After the blade root of the stationary blade is engaged in the abutment rod, the electromagnet inside the positioning cylinder is activated, and the other end of the stationary blade is placed on the end surface of the positioning cylinder. The electromagnet inside the positioning cylinder is then deactivated, causing the end of the positioning pin to engage with the surface of the stationary blade, thus completing the fixation of twelve sets of stationary blades in sequence. Activating the drive source causes the twelve sets of stationary blades to rotate synchronously under the action of the positioning pins, with each set of stationary blades having the same angle. By activating the robotic cutting machine, the twelve sets of stationary blades can be simultaneously cut and shaped, overcoming the problem in the prior art that only one set of stationary blades can be cut at a time, effectively improving the processing efficiency of the stationary blades.

[0020] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a turbine blade assembly partition processing equipment provided for an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the deflection assembly of a turbine blade assembly diaphragm processing equipment provided by the present invention.

[0023] Figure 3 This is a schematic diagram of the chip removal component of a turbine blade assembly partition processing equipment provided by the present invention.

[0024] Figure 4 This is a side view of a turbine blade assembly diaphragm processing equipment provided by the present invention.

[0025] Figure 5 for Figure 3 A magnified view of part A in the middle.

[0026] Figure 6 This is a schematic diagram of the support rod of a turbine blade assembly diaphragm processing equipment provided by the present invention.

[0027] Reference numerals: 1. Machine tool; 10. Stationary blade; 11. Robotic arm; 12. Robotic cutting machine; 2. Positioning assembly; 21. Machining cover; 22. Support; 23. Support rod; 231. Irregular groove; 24. Positioning cylinder; 25. Sliding pin; 26. Positioning pin; 3. Deflection assembly; 31. Gear; 32. Face gear; 33. Abutment post; 34. Drive source; 35. Drive gear; 4. Chip removal assembly; 41. Inner rotating ring; 42. Scraper; 43. Chip collection groove; 44. Connecting rod; 45. Chip collection box; 46. Conveying pipe. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0030] See Figures 1-6 A turbine blade assembly partition processing equipment includes: a machine tool 1, a robotic arm 11 movably connected to the machine tool 1, and a robotic cutting machine 12 rotatably connected to the end of the robotic arm 11. The turbine blade assembly partition processing equipment further includes:

[0031] The positioning component 2 is rotatably connected inside the machine tool 1. The positioning component 2 is provided with at least eight sets, and each set of positioning components 2 is fixed with a set of stationary blades 10.

[0032] The deflection component 3 is rotatably connected to the surface of the machine tool 1 and connected to each group of positioning components 2. It is used to drive each group of stationary blades 10 to deflect synchronously in the machine tool 1 through the positioning components 2, so as to realize the robot cutting machine 12 to perform synchronous processing on multiple groups of stationary blades 10.

[0033] In one embodiment of the present invention, such as Figure 3 and Figure 5 As shown, the positioning component 2 includes:

[0034] The processing cover 21 is connected to the machine tool 1, and a bracket 22 is fixed in the center;

[0035] The stop rod 23 is rotatably connected to the surface of the bracket 22, and the blade root of the stationary blade 10 is engaged inside the stop rod 23;

[0036] The positioning cylinder 24 is rotatably connected to the processing cover 21, and an electromagnet is fixed inside it;

[0037] The sliding pin 25 is slidably connected to the inside of the positioning cylinder 24, and its end is connected to the electromagnet via a compression spring. The sliding pin 25 is specifically made of magnetic material.

[0038] The locating pin 26 is connected to the other end of the sliding pin 25, and the locating pin 26 is engaged with the surface of the stationary blade 10.

[0039] In this embodiment, when cutting the stationary blade 10, the blade root of the stationary blade 10 is first engaged in the abutment rod 23. Simultaneously, the electromagnet inside the positioning cylinder 24 is activated. The sliding pin 25 slides into the positioning cylinder 24 under magnetic attraction, causing the sliding pin 25 to drive the positioning pin 26 to slide into the positioning cylinder 24. The other end of the stationary blade 10 is placed on the end surface of the positioning cylinder 24, and the electromagnet inside the positioning cylinder 24 is deactivated. At this time, under the push of the compression spring, the sliding pin 25 pushes the positioning pin 26 outward until the end of the positioning pin 26 engages with the surface of the stationary blade 10, thus completing the fixation of the stationary blade 10.

[0040] like Figure 6 As shown, the abutment 23 has a shaped groove 231, and the blade root of the stationary blade 10 is tightly fitted inside the shaped groove 231. Because the blade root of the stationary blade 10 and the shaped groove 231 are tightly fitted, the stability of the abutment 23 in fixing the blade root of the stationary blade 10 is improved, thereby ensuring the stability of the stationary blade 10 during processing.

[0041] like Figure 1 and Figure 2 As shown, there are at least eight sets of abutment rods 23, which are circumferentially and evenly distributed on the surface of the support 22. The number of positioning cylinders 24 is the same as the number of abutment rods 23. In this embodiment, there are twelve sets of abutment rods 23, so that with the cooperation of the twelve sets of abutment rods 23 and positioning pins 26, the twelve sets of stationary blades 10 can be positioned simultaneously. This enables the robot cutting machine 12 to cut the twelve sets of stationary blades 10 simultaneously, effectively improving the processing efficiency of the stationary blades 10.

[0042] In one embodiment of the present invention, such as Figure 2 As shown, the deflection component 3 includes:

[0043] Gear 31 is fixed to the outer end of positioning cylinder 24;

[0044] The face gear 32 is rotatably connected to the outer surface of the machining cover 21 and meshes with the gear 31.

[0045] The abutment post 33 is rotatably connected to the machining cover 21, and the lower side of the face gear 32 is rolledly connected to the surface of the abutment post 33;

[0046] The drive source 34 is installed inside the machine tool 1. The output end of the drive source 34 is connected to the drive gear 35, which meshes with the face gear 32. The drive source 34 can be a servo motor or a stepper motor.

[0047] In this embodiment, when the drive source 34 is turned on, the output end of the drive source 34 will drive the face gear 32 to rotate on the surface of the processing cover 21 through the drive gear 35. The face gear 32, through its connection with the twelve sets of gears 31, will drive each set of positioning cylinders 24 to rotate inside the processing cover 21. Thus, each set of positioning cylinders 24 will drive the stationary blades 10 to rotate through the positioning pins 26, so that the twelve sets of stationary blades 10 will rotate synchronously, and the angle of each set of stationary blades 10 is consistent. By turning on the robot cutting machine 12, the twelve sets of stationary blades 10 can be cut synchronously, overcoming the problem that only one set of stationary blades 10 can be cut at a time in the prior art, and improving the processing efficiency of the stationary blades 10.

[0048] In one embodiment of the present invention, such as Figure 3 As shown, the turbine blade assembly partition processing equipment further includes a chip removal component 4, which is rotatably connected inside the machine tool 1 and connected at its end to the deflection component 3. The chip removal component 4 is used to cooperate with the deflection component 3 to clean the chips on the surface of the machine tool 1. The chip removal component 4 includes:

[0049] The inner rotating ring 41 is rotatably connected to the surface of the bracket 22;

[0050] The scraper 42 is slidably connected to the bottom surface of the processing cover 21, and one end is connected to the surface of the inner rotating ring 41;

[0051] The chip collection groove 43 is provided on the machining cover 21, and the other end of the scraper 42 is connected to the side of the face gear 32 through the connecting rod 44.

[0052] The chip collection box 45 is connected to the machining cover 21. The upper side of the chip collection box 45 is connected to the chip collection groove 43, and the lower side is equipped with a conveying pipe 46.

[0053] In this embodiment, when multiple sets of stationary blades 10 are being cut, the resulting chips fall into the machining cover 21, affecting the cleanliness of the working environment. When the face gear 32 rotates under the action of the drive source 34, the face gear 32 drives the scraper 42 to slide at the bottom of the machining cover 21 through the connecting rod 44 on its lower side. The other end of the scraper 42 drives the inner rotating ring 41 to rotate on the surface of the bracket 22. Thus, the scraper 42 can push the chips at the bottom of the machine tool 1 through the chip collection groove 43 into the chip collection box 45. The chips inside the chip collection box 45 are then discharged to a designated area through the conveying pipe 46 for centralized collection and transfer. This achieves automated collection of chips generated during the machining of the stationary blades 10 by the machine tool 1, ensuring a clean working environment.

[0054] A method for processing turbine blade assembly diaphragms, based on the above-mentioned processing apparatus, includes the following steps:

[0055] Step 1: After engaging the blade root of the stationary blade 10 in the abutment rod 23, turn on the electromagnet inside the positioning cylinder 24, place the other end of the stationary blade 10 on the end surface of the positioning cylinder 24, turn off the electromagnet inside the positioning cylinder 24, so that the end of the positioning pin 26 engages with the surface of the stationary blade 10. Repeat the above steps to complete the fixing of the twelve sets of stationary blades 10 in sequence.

[0056] Step 2: Turn on the drive source 34 so that the twelve sets of stationary blades 10 can rotate synchronously under the action of the positioning pins 26;

[0057] Step 3: Start the robot cutting machine 12 to achieve sequential and synchronous cutting of the twelve sets of stationary blades 10.

[0058] The working principle of this invention is as follows: After the blade root of the stationary blade 10 is engaged in the abutment rod 23, the electromagnet inside the positioning cylinder 24 is activated, and the other end of the stationary blade 10 is placed on the end surface of the positioning cylinder 24. The electromagnet inside the positioning cylinder 24 is then deactivated, so that the end of the positioning pin 26 is engaged in the surface of the stationary blade 10. This process is repeated to fix the twelve sets of stationary blades 10. The drive source 34 is then activated, so that the twelve sets of stationary blades 10 are synchronously rotated under the action of the positioning pin 26, making the angle of each set of stationary blades 10 consistent. By activating the robot cutting machine 12, the twelve sets of stationary blades 10 can be synchronously cut, effectively improving the processing efficiency of the stationary blades 10.

[0059] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A turbine blade assembly diaphragm processing equipment, comprising: A machine tool (1), on which a robotic arm (11) is movably connected, and at the end of the robotic arm (11) is a robotic cutting machine (12) rotatably connected, characterized in that the turbine blade assembly partition processing equipment further includes: The positioning component (2) is rotatably connected inside the machine tool (1). The positioning component (2) is provided with at least eight sets, and each set of positioning components (2) is fixed with a set of stationary blades (10). The deflection assembly (3) is rotatably connected to the surface of the machine tool (1) and connected to each group of positioning assemblies (2). It is used to drive each group of stationary blades (10) to deflect synchronously in the machine tool (1) through the positioning assembly (2), so as to realize that the robot cutting machine (12) can perform synchronous processing on multiple groups of stationary blades (10). The positioning component (2) includes: The processing cover (21) is connected to the machine tool (1) and a bracket (22) is fixed in the center; The abutment (23) is rotatably connected to the surface of the bracket (22), and the blade root of the stationary blade (10) is engaged inside the abutment (23); The positioning cylinder (24) is rotatably connected to the processing cover (21), and an electromagnet is fixed inside it; The sliding pin (25) is slidably connected to the inside of the positioning cylinder (24), and its end is connected to the electromagnet via a compression spring; The positioning pin (26) is connected to the other end of the sliding pin (25), and the positioning pin (26) is engaged with the surface of the stationary blade (10). The abutment (23) is provided with a groove (231), and the blade root of the stationary blade (10) is tightly fitted inside the groove (231); The abutment rods (23) are at least eight groups and are distributed equidistantly in a circle on the surface of the bracket (22). The number of positioning cylinders (24) is the same as the number of abutment rods (23). The deflection component (3) includes: Gear (31) is fixed to the outer end of positioning cylinder (24); The face gear (32) is rotatably connected to the outer surface of the machining cover (21) and meshes with the gear (31); The abutment post (33) is rotatably connected to the machining cover (21), and the lower side of the face gear (32) is rolledly connected to the surface of the abutment post (33); The drive source (34) is installed inside the machine tool (1). The output end of the drive source (34) is connected to the drive gear (35), which meshes with the face gear (32).

2. The turbine blade assembly diaphragm processing equipment according to claim 1, characterized in that, The turbine blade assembly partition processing equipment also includes a chip removal component (4), which is rotatably connected inside the machine tool (1) and connected at its end to the deflection component (3). The chip removal component (4) is used to cooperate with the deflection component (3) to clean the debris on the surface of the machine tool (1).

3. The turbine blade assembly diaphragm processing equipment according to claim 2, characterized in that, The chip removal assembly (4) includes: The inner rotating ring (41) is rotatably connected to the surface of the bracket (22); The scraper (42) is slidably connected to the bottom surface of the processing cover (21), and one end is connected to the surface of the inner rotating ring (41); A chip collection groove (43) is provided on the machining cover (21), and the other end of the scraper (42) is connected to the side of the face gear (32) via a connecting rod (44); The chip collection box (45) is connected to the machining cover (21). The upper side of the chip collection box (45) is connected to the chip collection groove (43), and the lower side is equipped with a conveying pipe (46).

4. A method for processing turbine blade composite diaphragms, utilizing the turbine blade composite diaphragm processing equipment as described in any one of claims 1-3, characterized in that, Includes the following steps: Step 1: After engaging the blade root of the stationary blade (10) in the abutment rod (23), turn on the electromagnet inside the positioning cylinder (24), place the other end of the stationary blade (10) on the end surface of the positioning cylinder (24), turn off the electromagnet inside the positioning cylinder (24), so that the end of the positioning pin (26) engages on the surface of the stationary blade (10), repeat the above steps to complete the fixing of the twelve sets of stationary blades (10) in sequence; Step 2: Turn on the drive source (34) so ​​that the twelve sets of stationary blades (10) can rotate synchronously under the action of the positioning pins (26); Step 3: Start the robot cutting machine (12) to realize the sequential synchronous cutting of the twelve sets of stationary blades (10).

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