Machining platform and machining method of rotor room

Abstract

The invention discloses a machining platform. A plurality of supporting seats are arranged in a circumferential mode. The top faces of the supporting seats are fixedly connected with supporting rings. A milling supporting cylinder is further fixedly connected to the supporting ring, a plurality of clamping jaws are installed on the top of the milling supporting cylinder, and a plurality of magnetic suction cups are installed on the middle portion and the lower portion of the milling supporting cylinder. The tail end of a cross-shaped support for reinforcing and fixing is detachably installed on the top face of the milling supporting cylinder, and the bottom face of the middle of each supporting strip of the cross-shaped support is fixedly connected with a supporting plate through a connecting rod. A screw hole is formed in the top surface of the outer end of the support plate, and a compression bolt is screwed in the screw hole of the support plate; c-shaped clamps are arranged at the inner ends of the supporting plates, screw holes are formed in the tops of the C-shaped clamps, clamping bolts are screwed in the screw holes of the C-shaped clamps, and the tail ends of the clamping bolts can abut against the top faces of the corresponding supporting plates. The invention further discloses a machining method of the rotor room. According to the machining platform, machining of the rotor room cylinder in an inverted state with the opening facing downwards is achieved innovatively.

Description

Technical Field

[0001] The present invention belongs to the technical field of rotor house machining of a wind turbine generator, and in particular relates to a machining platform and a rotor house machining method. Background Art

[0002] When machining the rotor house of a wind turbine, it is necessary to mill a T-slot on the inner wall of the cylinder for installing the magnetic cylinder, and drill and mill various required threaded holes, pin holes, inner flange holes, and speed measuring holes.

[0003] Referring to Chinese patents with publication numbers CN219598698U and CN210649567U, prior to the present invention, rotor housing machining was performed by placing the rotor housing cylinder with its opening facing upward and clamping it on a rotary table. For large wind turbines, the rotor housing is large and heavy, making it difficult to rotate on a rotary table. Furthermore, because the upward-facing rotor housing cylinder and the mounting holes at its other end are relatively small, the machining machine cannot be mounted on the rotary table inside the rotor housing cylinder when machining the inner wall of the rotor housing cylinder. Referring to patent publication number CN210818382U, the machining machine needs to be suspended inverted to machine the inner wall of the rotor housing cylinder. This not only makes machining more difficult, but also affects machining accuracy due to the instability of the machining machine.

[0004] If the rotor housing cylinder is turned upside down for processing, the center of gravity of the rotor housing cylinder will be biased upward, and it will easily shake or vibrate during machining, which will reduce the processing accuracy. Therefore, no other domestic companies have adopted this practice.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0006] Based on the content in the background technology, in order to realize machining of the rotor house cylinder in an inverted state with the opening facing downward, the present invention provides a machining platform and a rotor house machining method.

[0007] A machining platform is disclosed, which includes a support seat, a support ring, a milling support cylinder, a clamping claw, a magnetic chuck and a reinforcing fixing device;

[0008] A plurality of support seats are arranged in a circumferential manner, and the top surface of the support seat is fixedly connected to a support ring through a contour pad; a milling support cylinder is also fixedly connected to the support ring, and of course, the two ends of the milling support cylinder are open, and a plurality of claws are installed on the top of the milling support cylinder, and a plurality of magnetic suction cups are installed in the middle and lower parts of the milling support cylinder;

[0009] The reinforcing fixing device includes: a cross-shaped bracket, a connecting rod, a support plate, a clamping bolt, a C-shaped clamp and a clamping bolt;

[0010] The end of the cross-shaped bracket can be detachably mounted on the top surface of the milling support cylinder, and the middle bottom surface of each branch of the cross-shaped bracket is fixedly connected to the support plate through a connecting rod; a screw hole is provided on the top surface of the outer end of the support plate, and a clamping bolt is screwed into the screw hole of the support plate; a C-shaped clamp is provided at the inner end of the support plate, and a screw hole is provided on the top of the C-shaped clamp, and a clamping bolt is screwed into the screw hole of the C-shaped clamp, and the end of the clamping bolt can contact the top surface of the corresponding support plate.

[0011] When the cylinder opening of the rotor house is inverted downward on the supporting ring and located on the inner side of the milling support cylinder, after the rotor house cylinder is fixed by the claws and the magnetic suction cup, the C-shaped clamp of the above-mentioned reinforcing fixing device can be used to clamp the inner flange at the assembly hole of the rotor house cylinder, tighten the clamping bolt of the C-shaped clamp, tighten the inner flange with the C-shaped clamp, and at the same time tighten the clamping bolt of the support plate, and the end of the clamping bolt presses the inner flange. In this way, the inner flange at the assembly hole at the other end of the rotor house cylinder is limited and reinforced by the reinforcing fixing device, which can fix the inverted rotor house cylinder more firmly, eliminate the negative impact of its center of gravity being biased upward, and avoid the vibration of the tool due to the shaking of the rotor house cylinder during machining, especially when drilling and milling holes, thereby ensuring the machining accuracy.

[0012] Furthermore, the above-mentioned processing platform also includes positioning pins and positioning blocks, the top surface of the supporting ring is fixedly connected to a plurality of positioning pins at the inner ring, the positioning pins are vertically arranged, and a plurality of positioning blocks are fixedly connected to the inner ring surface of the supporting ring, and the top of the positioning block protrudes from the top surface of the supporting ring, and the positioning pins and positioning blocks are both located on the inner side of the milling support cylinder; when the rotor house cylinder opening is inverted downward on the supporting ring, the positioning pins are placed in the blind holes of the open end face of the rotor house cylinder to position the placement angle and phase of the rotor house cylinder, and the side face of the positioning block is in contact with the inner side face of the open end of the rotor house to perform center positioning of the rotor house cylinder, and the precisely positioned rotor house cylinder can improve the processing accuracy.

[0013] Preferably, a plurality of through holes are circumferentially evenly distributed in the middle and lower parts of the milling support cylinder, and a magnetic suction cup is fixed in each through hole. In this way, the magnetic suction cup arranged around the milling support cylinder can magnetically fix the rotor housing cylinder evenly in all directions.

[0014] Furthermore, three milling machines and a drilling and milling machine are arranged on the inner side of the supporting ring and the milling support cylinder, and the milling machine and the drilling and milling machine are both installed on a CNC rotary workbench; the CNC rotary workbench is an existing technology, which can drive the milling machine and the drilling and milling machine to convert the processing stations, so as to perform processing at various stations of the rotor room cylinder, and the milling machine and the drilling and milling machine can mill T-slots for installing magnetic cylinders and drill various required hole types on the inner wall of the rotor room cylinder; importantly, through the above-mentioned processing platform, the milling machine and the drilling and milling machine can be installed on the CNC rotary workbench on the inner side of the rotor room cylinder, the installation state is stable and the processing accuracy is high, which is very convenient for machining the inner wall of the rotor room cylinder, reducing the processing difficulty.

[0015] A method for machining a rotor chamber is disclosed, which uses the above-mentioned machining platform and includes the following steps:

[0016] After the rotor house cylinder is hoisted upside down on the support ring of the machining platform with the opening facing downward, the rotor house cylinder is located on the inner side of the milling support cylinder. The rotor house cylinder is first positioned with the positioning pin and the positioning block, and then the upper part of the rotor house cylinder is clamped and fixed by the claws, and the middle and lower parts of the rotor house cylinder are magnetically fixed with the magnetic suction cup. An inner flange is welded at the assembly hole at the other end of the rotor house cylinder relative to the opening. After the inner flange edge of the rotor house cylinder is clamped with each C-shaped clamp of the reinforcing fixing device, the clamping bolts of each C-shaped clamp are tightened to tighten the inner flange, and at the same time, the clamping bolts of the support plate and the end of the clamping bolt are tightened to tighten the inner flange, so as to further limit and fix the rotor house cylinder by the reinforcing fixing device.

[0017] Finally, the milling machine and drilling and milling machine installed on the inner side of the support ring and the milling support cylinder are used to mill T-slots and drill various required hole types on the inner wall of the rotor room cylinder. The milling machine and drilling and milling machine installed on the CNC rotary table can convert the processing stations to perform all-round machining on the inner wall of the rotor room cylinder.

[0018] Through the above technical solution, the present invention has at least the following beneficial effects:

[0019] The technical solution of this application innovatively realizes the machining of the rotor housing cylinder in an inverted state with the opening facing downwards:

[0020] The processing platform can reliably support and fix the inverted rotor housing cylinder. In addition to fixing the rotor housing cylinder through the original claws and magnetic suction cups, the processing platform is also provided with a reinforcement fixing device to limit and strengthen the inner flange at the assembly hole at the other end of the rotor housing cylinder. It can fix the inverted rotor housing cylinder more firmly, eliminate the negative impact of its center of gravity being biased upward, and avoid the vibration of the tool due to the shaking of the rotor housing cylinder during machining, especially drilling and milling, thereby ensuring the processing accuracy.

[0021] In the method for processing the rotor house cylinder in an inverted state with the opening facing downward, the milling machine and the drilling and milling machine located inside the support ring and the milling support cylinder can be installed on a rotary worktable to perform all-round processing on the inner wall of the rotor house cylinder. Compared with the original need to invert and suspend the processing machine to process the inner wall of the rotor house cylinder, the installation state of the milling machine and the drilling and milling machine in the processing method of the present invention is stable, the processing accuracy is high, and it is also very convenient to machine the inner wall of the rotor house cylinder, reducing the processing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. These drawings are all simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0023] Figure 1 A partial front cross-sectional view of the processing platform described in an embodiment of the present application;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a top view schematic diagram of the cross-shaped bracket described in the embodiment of the present application installed on the top surface of the milling support cylinder;

[0026] Figure 4 for Figure 1 Enlarged view of point B in the middle. DETAILED DESCRIPTION

[0027] In the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", and "back" indicating directions or positional relationships, they are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship are only used for illustrative purposes and cannot be understood as limiting this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this invention based on specific circumstances.

[0029] refer to Figures 1 to 4 The processing platform includes a support base 1, a support ring 2, a milling support cylinder 4, a clamping claw 5, a magnetic chuck 6 and a strengthening fixing device 7;

[0030] A plurality of support seats 1 are arranged in a circular pattern, and the top surface of the support seat 1 is fixedly connected to a support ring 2 through a contour pad 3; a milling support cylinder 4 is also fixedly connected to the support ring 2, and of course the milling support cylinder 4 is open at both ends, and a plurality of claws 5 are installed on the top of the milling support cylinder 4, and a plurality of magnetic suction cups 6 are installed in the middle and lower parts of the milling support cylinder 4. Specifically, a plurality of through holes are uniformly distributed circumferentially in the middle and lower parts of the milling support cylinder 4, and a magnetic suction cup 6 is fixed in each through hole. In this way, the magnetic suction cups 6 arranged around the milling support cylinder 4 can magnetically fix the rotor housing cylinder 11 evenly in all directions.

[0031] refer to Figure 2 and Figure 3 , the reinforcing fixing device 7 includes: a cross-shaped bracket 701, a connecting rod 702, a support plate 703, a clamping bolt 704, a C-shaped clamp 705 and a clamping bolt 706;

[0032] The end of the cross-shaped bracket 701 can be detachably mounted on the top surface of the milling support cylinder 4, and the middle bottom surface of each branch of the cross-shaped bracket 701 is fixedly connected to the support plate 703 through a connecting rod 702; a screw hole is provided on the top surface of the outer end of the support plate 703, and a clamping bolt 704 is screwed into the screw hole of the support plate 703; a C-shaped clamp 705 is provided at the inner end of the support plate 703, and a screw hole is provided on the top of the C-shaped clamp 705, and a clamping bolt 706 is screwed into the screw hole of the C-shaped clamp 705, and the end of the clamping bolt 706 can contact the top surface of the corresponding support plate 703.

[0033] When the rotor housing cylinder 11 is inverted on the support ring 2 with its opening facing downward and is located on the inner side of the milling support cylinder 4, after the rotor housing cylinder 11 is fixed by the claws 5 and the magnetic suction cup 6, the C-shaped clamp 705 of the above-mentioned reinforcing fixing device 7 can be used to clamp the inner flange 1101 at the assembly hole of the rotor housing cylinder 11, tighten the clamping bolt 706 of the C-shaped clamp 705, tighten the inner flange 1101 with the C-shaped clamp 705, and at the same time tighten the clamping bolt 704 of the support plate 703, and the end of the clamping bolt 704 compresses the inner flange 1101. In this way, the inner flange 1101 at the assembly hole at the other end of the rotor housing cylinder 11 is limited and reinforced by the reinforcing fixing device 7, which can fix the inverted rotor housing cylinder 11 more firmly, eliminate the negative impact of its center of gravity being biased upward, and avoid the vibration of the tool due to the vibration of the rotor housing cylinder 11 during machining, especially when drilling and milling holes, thereby ensuring the machining accuracy.

[0034] refer to Figure 4 The above-mentioned processing platform also includes positioning pins 12 and positioning blocks 13. The top surface of the supporting ring 2 is fixedly connected with a plurality of positioning pins 12 at the inner ring. The positioning pins 12 are vertically arranged, and a plurality of positioning blocks 13 are fixedly connected to the inner ring surface of the supporting ring 2. The top of the positioning block 13 protrudes from the top surface of the supporting ring 2. The positioning pins 12 and the positioning blocks 13 are both located on the inner side of the milling support cylinder 4; when the rotor house cylinder 11 is inverted on the supporting ring 2 with the opening facing downward, the positioning pins 12 are placed in the blind hole of the open end face of the rotor house cylinder 11 to position the placement angle and phase of the rotor house cylinder 11, and the side surface of the positioning block 13 is in contact with the inner side surface of the open end of the rotor house to perform center positioning of the rotor house cylinder 11. The precisely positioned rotor house cylinder 11 can improve the processing accuracy.

[0035] refer to Figure 1 , three milling machines 8 and a drilling and milling machine 9 are arranged on the inner side of the supporting ring 2 and the milling support cylinder 4, and the milling machine 8 and the drilling and milling machine 9 are both installed on a CNC rotary table 10; the CNC rotary table 10 is a prior art, which can drive the milling machine 8 and the drilling and milling machine 9 to convert the processing stations, so as to perform processing at each station of the rotor room cylinder 11, and the milling machine 8 and the drilling and milling machine 9 can mill T-slots for installing magnetic cylinders and drill various required hole types on the inner wall of the rotor room cylinder 11; it is important that through the above-mentioned processing platform, the milling machine 8 and the drilling and milling machine 9 can be installed on the CNC rotary table 10 on the inner side of the rotor room cylinder 11, the installation state is stable and the processing accuracy is high, which is very convenient for machining the inner wall of the rotor room cylinder 11, reducing the processing difficulty.

[0036] A method for machining a rotor chamber, using the above-mentioned machining platform, includes the following steps:

[0037] After the rotor housing cylinder 11 is hoisted upside down on the supporting ring 2 of the machining platform with the opening facing downward, the rotor housing cylinder 11 is located on the inner side of the milling support cylinder 4. The rotor housing cylinder 11 is first positioned with the positioning pin 12 and the positioning block 13, and then the upper part of the rotor housing cylinder 11 is clamped and fixed by the claw 5, and the middle and lower parts of the rotor housing cylinder 11 are magnetically fixed by the magnetic suction cup 6. An inner flange 1101 is welded at the assembly hole at the other end of the rotor housing cylinder 11 relative to the opening. After the edges of the inner flange 1101 of the rotor housing cylinder 11 are clamped with each C-shaped clip 705 of the reinforcing fixing device 7, the clamping bolts 706 of each C-shaped clip 705 are tightened to tighten the inner flange 1101, and at the same time, the clamping bolt 704 of the support plate 703 is tightened, and the end of the clamping bolt 704 is tightened to tighten the inner flange 1101, so as to further limit and fix the rotor housing cylinder 11 by the reinforcing fixing device 7;

[0038] Finally, the milling machine 8 and the drilling and milling machine 9 arranged on the inner side of the supporting ring 2 and the milling support cylinder 4 are used to mill T-slots and drill various required hole types on the inner wall of the rotor room cylinder 11. The milling machine 8 and the drilling and milling machine 9 installed on the CNC rotary table 10 can convert the processing stations to perform all-round machining on the inner wall of the rotor room cylinder 11.

[0039] In this way, according to the above method, the rotor housing cylinder 11 is innovatively machined in an inverted state with the opening facing downwards by means of the machining platform.

[0040] The machining platform can reliably support and fix the inverted rotor housing cylinder 11. In addition to fixing the rotor housing cylinder 11 through the original claws 5 and magnetic chuck 6, the machining platform is also provided with an additional reinforcing fixing device 7 to limit and strengthen the inner flange 1101 at the assembly hole at the other end of the rotor housing cylinder 11. This can fix the inverted rotor housing cylinder 11 more firmly, eliminate the negative impact of its center of gravity being biased upward, and avoid tool vibration caused by the shaking of the rotor housing cylinder 11 during machining, especially drilling and milling, thereby ensuring machining accuracy.

[0041] In this processing method, the milling machine 8 and the drilling and milling machine 9 located on the inner side of the support ring 2 and the milling support cylinder 4 can be installed on the CNC rotary table 10 to perform all-round processing on the inner wall of the rotor room cylinder 11. Compared with the original need to invert and suspend the processing machine to process the inner wall of the rotor room cylinder 11, the milling machine 8 and the drilling and milling machine 9 in the processing method of the present invention are installed in a stable state, so that the processing accuracy is high, and it is also very convenient to machine the inner wall of the rotor room cylinder 11, reducing the processing difficulty.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Based on the present invention and the above description, relevant personnel can make various changes and modifications without departing from the technical idea of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A processing platform, characterized in that: It comprises a support seat (1), a support ring (2), a milling support cylinder (4), a clamping claw (5), a magnetic suction cup (6) and a reinforcing fixing device (7); A plurality of support seats (1) are arranged in a circumferential manner, and a support ring (2) is fixedly connected to the top surface of the support seat (1); a milling support cylinder (4) is also fixedly connected to the support ring (2), a plurality of claws (5) are installed on the top of the milling support cylinder (4), and a plurality of magnetic suction cups (6) are installed in the middle and lower parts of the milling support cylinder (4); The reinforcing fixing device (7) comprises: a cross-shaped bracket (701), a connecting rod (702), a support plate (703), a clamping bolt (704), a C-shaped clamp (705) and a clamping bolt (706); The end of the cross-shaped bracket (701) is detachably mounted on the top surface of the milling support cylinder (4), and the middle bottom surface of each branch of the cross-shaped bracket (701) is fixedly connected to the support plate (703) through a connecting rod (702); a screw hole is provided on the top surface of the outer end of the support plate (703), and a clamping bolt (704) is screwed into the screw hole of the support plate (703); a C-shaped clamp (705) is provided at the inner end of the support plate (703), and a screw hole is provided on the top of the C-shaped clamp (705), and a clamping bolt (706) is screwed into the screw hole of the C-shaped clamp (705), and the end of the clamping bolt (706) can contact the top surface of the corresponding support plate (703).

2. A processing platform according to claim 1, characterized in that: The invention also includes positioning pins (12) and positioning blocks (13), wherein the top surface of the support ring (2) is fixedly connected to a plurality of positioning pins (12) at the inner ring, and the positioning pins (12) are vertically arranged, and the inner ring surface of the support ring (2) is fixedly connected to a plurality of positioning blocks (13), and the top of the positioning block (13) protrudes from the top surface of the support ring (2), and the positioning pins (12) and the positioning blocks (13) are both located on the inner side of the milling support cylinder (4).

3. A processing platform according to claim 1, characterized in that: A plurality of through holes are uniformly distributed circumferentially in the middle and lower parts of the milling support cylinder (4), and a magnetic suction cup (6) is fixedly arranged in each through hole.

4. A processing platform according to claim 1, 2 or 3, characterized in that: Three milling machines (8) and a drilling and milling machine (9) are arranged on the inner side of the supporting ring (2) and the milling support cylinder (4), and the milling machine (8) and the drilling and milling machine (9) are both installed on a numerical control rotary table (10).

5. A method for processing a rotor house, characterized in that: Using the processing platform described in claim 4, The following processes are included: After the rotor housing barrel (11) is hoisted upside down on the support ring (2) of the processing platform with its opening facing downward, the rotor housing barrel (11) is located on the inner side of the milling support cylinder (4). The rotor housing barrel (11) is first positioned using the positioning pin (12) and the positioning block (13). The upper part of the rotor housing barrel (11) is then fixed by the clamping claw (5). The middle and lower parts of the rotor housing barrel (11) are magnetically fixed using the magnetic suction cup (6). The rotor housing barrel (11) is welded to the assembly hole at the other end relative to the opening. The inner flange (1101) is connected, and after the edges of the inner flange (1101) of the rotor housing cylinder (11) are clamped with each C-shaped clamp (705) of the reinforcing fixing device (7), the clamping bolts (706) of each C-shaped clamp (705) are tightened to tighten the inner flange (1101), and at the same time, the clamping bolts (704) of the support plate (703) are tightened, and the ends of the clamping bolts (704) are tightened to compress the inner flange (1101), thereby further limiting and fixing the rotor housing cylinder (11) through the reinforcing fixing device (7); Finally, a milling machine (8) and a drilling and milling machine (9) arranged inside the supporting ring (2) and the milling support cylinder (4) are used to mill T-slots and drill various required hole shapes on the inner wall of the rotor housing cylinder (11). The milling machine (8) and the drilling and milling machine (9) installed on the CNC rotary table (10) can switch the processing stations to perform all-round machining on the inner wall of the rotor housing cylinder (11).

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