High-efficiency motor backward-inclined fan blade and manufacturing method thereof

Abstract

The present invention discloses a high-efficiency motor backward-inclined fan blade and a manufacturing method thereof, belonging to the technical field of high-efficiency motor backward-inclined fan blade and a manufacturing method thereof, and comprises two fan disks, the opposite surfaces of the two fan disks are fixedly connected by six fixing rods, the opposite surfaces of the two fan disks are provided with the same gear, the gear is meshed with the six gears, and the tooth plate is slidably connected in two slide grooves. The high-efficiency motor backward-inclined fan blade and a manufacturing method thereof, the fan blade is processed and manufactured by adopting a CNC machining method, and the CNC machining method can effectively avoid the problems caused by casting and extrusion molding. After CNC machining and molding, it can be directly sprayed for use without subsequent reprocessing, and hard extrusion is prevented from directly affecting the hardness of the steel plate, so that the fan blade is not prone to rebound phenomenon, and the manufacturing accuracy of the fan blade is improved while ensuring its service life.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-efficiency motor backward-inclined fan blades and manufacturing methods thereof, and specifically relates to high-efficiency motor backward-inclined fan blades and manufacturing methods thereof. Background Art

[0002] A high-efficiency motor refers to a motor with higher efficiency than a general standard motor. Currently, most high-efficiency motors are optimized from the electromagnetic aspect of the motor, and rarely involve improvements in the structure, shape and manufacturing method of the motor fan. Existing high-efficiency motor backward-inclined fan blades and their manufacturing methods are mostly integrated structures. Since the fan blades are fixed on the fan disk, they cannot be disassembled. When one or more blades are damaged, the fan assembly needs to be disassembled and the fan disk and blades need to be removed and replaced, which brings a greater burden to the staff and increases the cost of maintenance, making it less suitable for use.

[0003] At present, some fan blades are made of steel plates. Due to the complex geometric shape of fan blades, although they can be made by casting or extrusion, during casting, the steel plate needs to be heated to the melting point and then poured into the mold. There will be certain burrs and edge materials on the surface of the prefabricated parts, which still need subsequent processing. In addition, the extrusion production directly pushes the steel plate into the mold for extrusion molding. Hard extrusion directly affects the hardness of the steel plate. In addition, the hardness of the steel plate after bending is prone to rebound, which affects the manufacturing accuracy of the fan blades and their service life. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-efficiency motor backward-inclined fan blade and a method for manufacturing the same, which solves the problem that the fan blades are fixed on a fan disk and cannot be disassembled. When a single or several blades are damaged, the fan assembly needs to be disassembled and the fan disk and blades need to be removed and replaced, which not only brings a greater burden to the staff but also increases the cost of maintenance. The casting and extrusion molding directly affect the manufacturing accuracy of the fan blades and their service life.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-efficiency motor backward-inclined fan blade and a manufacturing method thereof, comprising two fan disks, the opposite surfaces of the two fan disks are fixedly connected by six fixing rods, the opposite surfaces of the two fan disks are provided with the same gear, the gear is meshed with the six gears, the tooth plate is slidably connected in two slide grooves, the two slide grooves are respectively opened on the opposite surfaces of the two fan disks, one end of the tooth plate is fixedly connected with a clamping block, the clamping block is clamped in the clamping groove, the clamping groove is opened on the left side of the blade, the front side of the inner wall of the gear is fixedly connected to one end of the fixing component through a telescopic rod, the fixing component is clamped on the front side of the inner wall of the groove, and the groove is opened on the front side of the front fan disk.

[0008] As a further solution of the present invention: the blades are clamped in two placement grooves, and the two placement grooves are respectively opened on opposite surfaces of two fan disks.

[0009] As a further solution of the present invention: a bearing is sleeved on one end of the back side of the gear, and the bearing is clamped on the front side of the rear fan disk.

[0010] As a further solution of the present invention: the fixing assembly includes a threaded cap, which is clamped on the front side of the inner wall of the groove, and the inner thread of the threaded cap is connected to a threaded rod, and one end of the back side of the threaded rod is fixedly connected to one end of the front side of the telescopic rod.

[0011] As a further solution of the present invention: the placement groove is adapted to the shape of the blade, and the telescopic rod is configured as a rectangular telescopic rod.

[0012] As a further solution of the present invention: a method for manufacturing a high-efficiency motor backward-inclined fan blade, the manufacturing steps are as follows:

[0013] S1. Material selection and cutting: First, the titanium alloy steel plate is cut into shape using a plasma cutting machine, and the area formed by the cutting is larger than the area of ​​the fan blade.

[0014] S2. CNC modeling: First, the processing environment of the CNC machine tool, part blank, fixture and processing tool to be used is mapped to construct a simulated processing environment, which includes: establishing a tool model, a fixture model and a blank model, establishing a machine tool motion model, adding geometric models of each component, and accurately positioning them, and finally setting machine tool parameters.

[0015] S3, CNC rough machining: Input the multi-dimensional programming code data of the fan blade into the CNC machine tool control end, and use the tool in the CNC machine tool to evenly cut and shape the formed titanium alloy steel plate, and the remaining margin after rough machining is within 2-4mm. After the rough machining is completed, auxiliary materials need to be backfilled.

[0016] S4. Milling: Cavity milling is used during cutting. Since most of the fan blades are formed curved surfaces, in order to avoid the formation of oxide scale and wear of the tool, the tool cannot stop during the cutting process. The tool must be retracted immediately after cutting is completed. The feed method uses arc feed to ensure stable cutting and reduce the impact of the blade on the tool.

[0017] S5. CNC finishing: Secondly, replace the fine milling cutter, adjust the remaining allowance of rough machining to 0, and re-calibrate the tool, and perform fine milling on the prefabricated part by arc feed.

[0018] S6. After the fan blade prefabricated part is prepared, it is subjected to plastic spraying so that multiple layers of plastic material are attached to the surface of the prefabricated part, which can effectively prevent the fan blade from rusting, thereby completing the production of the backward-inclined fan blade.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The high-efficiency motor backward-inclined fan blade and its manufacturing method are processed and manufactured by adopting CNC machining. When the prefabricated parts are roughly processed, a certain margin is retained, and auxiliary materials are backfilled. The filled auxiliary materials can be paraffin and low-melting-point alloys to overcome the deformation of the blades during the fine processing. Moreover, through milling, the tool does not stop during the cutting process, and the circular arc feed method is adopted. Stable cutting can reduce the impact of the fan blade on the tool. The CNC machining method can effectively avoid the problems caused by casting and extrusion molding. After CNC machining, it can be directly sprayed and used without subsequent reprocessing, which prevents hard extrusion from directly affecting the hardness of the steel plate, making it difficult for the fan blade to rebound, improving the manufacturing accuracy of the fan blade while ensuring its service life.

[0022] 2. The high-efficiency motor backward-inclined fan blade and its manufacturing method, by setting a threaded rod, a telescopic rod, a gear, a tooth plate, a block and a blade, when the blade needs to be removed, the staff reverses the threaded rod so that the threaded rod drives the telescopic rod to rotate and the gear can be driven to rotate at the same time, so that the gear drives multiple tooth plates to rotate, so that the tooth plate drives the block to disengage from the slot, and the staff can directly pull out the blade, which is very convenient and does not need to replace the fan disk and multiple blades together, which is convenient for the staff to operate and reduces the maintenance cost, and is very applicable.

[0023] 3. The high-efficiency motor backward-inclined fan blade and the manufacturing method thereof are provided with a telescopic rod, a threaded rod and a threaded cap. Due to the provision of a rectangular telescopic rod, the telescopic rod can drive the gear to rotate when the threaded rod rotates, and the gear will not shift its position. Through the mutual cooperation between the threaded rod and the threaded cap, the gear can be effectively limited to prevent the gear from rotating freely, so that the card block can be more stably inserted into the card slot, and the blade will not shake. When installing the blade, the staff inserts the blade into the corresponding two placement grooves, and then rotates the threaded rod forward, so that the threaded rod drives the telescopic rod to contract and drives the gear to rotate at the same time, so that the tooth plate can drive the card block to be inserted into the card slot, and the blade can be fixed. It is convenient and quick, and it is easy for the staff to install the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic cross-sectional structure diagram of the present invention;

[0025] Figure 2 It is a cross-sectional structure schematic diagram of the gear of the present invention when viewed from the left;

[0026] Figure 3 It is a structural schematic diagram of the fan disk of the present invention from the left side;

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of the blade of the present invention when viewed from the front;

[0028] In the figure: 1 fan disk, 2 fixing rod, 3 gear, 4 bearing, 5 tooth plate, 6 slide groove, 7 clamp block, 8 blade, 9 placement groove, 10 clamp groove, 11 fixing assembly, 111 threaded cap, 112 threaded rod, 12 groove, 13 telescopic rod. DETAILED DESCRIPTION

[0029] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0030] like Figure 1-4As shown, the present invention provides a technical solution: a high-efficiency motor backward-inclined fan blade and a manufacturing method thereof, comprising two fan disks 1, the opposite surfaces of the two fan disks 1 are fixedly connected by six fixing rods 2, the opposite surfaces of the two fan disks 1 are provided with a same gear 3, the gear 3 is meshed with the six gears 3, and the tooth plate 5 is slidably connected in two slide grooves 6. Due to the provision of the slide grooves 6, the gear 3 drives the tooth plate 5 to rotate without shaking and is more stable. The two slide grooves 6 are respectively opened on the opposite surfaces of the two fan disks 1, and one end of the tooth plate 5 A clamping block 7 is fixedly connected, and the clamping block 7 is clamped in the clamping slot 10. By setting the clamping block 7, the threaded rod 112 drives the telescopic rod 13 to contract and drives the gear 3 to rotate at the same time, so that the toothed plate 5 can drive the clamping block 7 to be clamped into the clamping slot 10, and the blade 8 can be fixed, which is convenient and quick. The clamping slot 10 is opened on the left side of the blade 8, and the front side of the inner wall of the gear 3 is fixedly connected to one end of the fixing component 11 through the telescopic rod 13. The fixing component 11 is clamped on the front side of the inner wall of the groove 12, and the groove 12 is opened on the front side of the front fan disk 1.

[0031] Specifically, Figure 1 , 2 As shown, the blade 8 is clamped in two placement grooves 9, and the two placement grooves 9 are respectively opened on the opposite surfaces of the two fan disks 1. One end of the back side of the gear 3 is sleeved with a bearing 4. Due to the bearing 4, the gear 3 is more stable during rotation. The bearing 4 is clamped on the front side of the rear fan disk 1. The placement groove 9 is adapted to the shape of the blade 8. Due to the placement groove 9, the placement groove 9 effectively limits the blade 8, thereby improving the stability of the rotation of the blade 8. The telescopic rod 13 is set as a rectangular telescopic rod. Due to the rectangular telescopic rod 13, the telescopic rod 13 can drive the gear 3 to rotate when the threaded rod 112 rotates, and the gear 3 will not shift its position.

[0032] Specifically, Figure 2 , 3 As shown, the fixing assembly 11 includes a threaded cap 111, which is clamped on the front side of the inner wall of the groove 12. The threaded cap 111 is internally threaded with a threaded rod 112. One end of the back side of the threaded rod 112 is fixedly connected to one end of the front side of the telescopic rod 13. Through the mutual cooperation between the threaded rod 112 and the threaded cap 111, the gear 3 can be effectively limited to prevent the gear 3 from rotating freely, so that the block 7 can be more stably clamped in the slot 10, and the blade 8 will not shake.

[0033] The production steps are as follows:

[0034] S1. Material selection and cutting: First, the titanium alloy steel plate is cut into shape using a plasma cutting machine, and the area formed by the cutting is larger than the area of ​​the fan blade.

[0035] S2. CNC modeling: First, the processing environment of the CNC machine tool, part blank, fixture and processing tool to be used is mapped to construct a simulated processing environment, which includes: establishing a tool model, a fixture model and a blank model, establishing a machine tool motion model, adding geometric models of each component, and accurately positioning them, and finally setting machine tool parameters.

[0036] S3, CNC rough machining: Input the multi-dimensional programming code data of the fan blade into the CNC machine tool control end, and use the tool in the CNC machine tool to evenly cut and shape the formed titanium alloy steel plate, and the remaining margin after rough machining is within 2-4mm. After the rough machining is completed, auxiliary materials need to be backfilled.

[0037] S4. Milling: Cavity milling is used during cutting. Since most of the fan blades are formed curved surfaces, in order to avoid the formation of oxide scale and wear of the tool, the tool cannot stop during the cutting process. The tool must be retracted immediately after cutting is completed. The feed method uses arc feed to ensure stable cutting and reduce the impact of the blade on the tool.

[0038] S5. CNC finishing: Secondly, replace the fine milling cutter, adjust the remaining allowance of rough machining to 0, and re-calibrate the tool, and perform fine milling on the prefabricated part by arc feed.

[0039] S6. After the fan blade prefabricated part is prepared, it is subjected to plastic spraying so that multiple layers of plastic material are attached to the surface of the prefabricated part, which can effectively prevent the fan blade from rusting, thereby completing the production of the backward-inclined fan blade.

[0040] The working principle of the present invention is:

[0041] S1. When the blade 8 needs to be removed, the staff reverses the threaded rod 112 so that the threaded rod 112 drives the telescopic rod 13 to rotate and drives the gear 3 to rotate, so that the gear 3 drives the multiple tooth plates 5 to rotate, so that the tooth plates 5 drive the block 7 to disengage from the slot 10;

[0042] S2. When the block 7 is out of the slot 10, the staff can pull the blade 8 from the side of the fan disk 1 so that the blade 8 slides in the two placement slots 9, and the blade 8 can be removed;

[0043] S3. When the blade 8 needs to be installed, the staff inserts the blade 8 into the corresponding two placement grooves 9, and then rotates the threaded rod 112 forward, so that the threaded rod 112 drives the telescopic rod 13 to contract and drives the gear 3 to rotate at the same time, so that the gear 3 can drive the tooth plate 5 to rotate forward, so that the tooth plate 5 can drive the clamping block 7 to be clamped into the clamping groove 10, and the blade 8 can be fixed.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0045] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A high-efficiency motor backward-inclined fan blade, comprising two fan disks (1), characterized in that: The opposite surfaces of the two fan disks (1) are fixedly connected by six fixing rods (2); the opposite surfaces of the two fan disks (1) are provided with a same gear (3); the gear (3) is meshed with six tooth plates (5); the tooth plates (5) are slidably connected in two slide grooves (6); the two slide grooves (6) are respectively arranged on the opposite surfaces of the two fan disks (1); one end of the tooth plate (5) is fixedly connected with a clamping block (7); the clamping block (7) is clamped in a clamping groove (10); the clamping groove (10) is arranged on the left side of the blade (8); the front side of the inner wall of the gear (3) is fixedly connected with one end of a fixing component (11) through a telescopic rod (13); the fixing component (11) is clamped on the front side of the inner wall of a groove (12); the groove (12) is arranged on the front side of the front fan disk (1); The blade (8) is clamped in two placement grooves (9), and the two placement grooves (9) are respectively opened on the opposite surfaces of the two fan disks (1). The fixing component (11) includes a threaded cap (111), and the threaded cap (111) is clamped on the front side of the inner wall of the groove (12). The threaded cap (111) is internally threadedly connected to a threaded rod (112), and one end of the back side of the threaded rod (112) is fixedly connected to one end of the front side of the telescopic rod (13).

2. The high-efficiency motor backward-inclined fan blade according to claim 1, characterized in that: A bearing (4) is sleeved on one end of the back side of the gear (3), and the bearing (4) is clamped on the front side of the rear fan disk (1).

3. The high-efficiency motor backward-inclined fan blade according to claim 2, characterized in that: The placement groove (9) is adapted to the shape of the blade (8), and the telescopic rod (13) is configured as a rectangular telescopic rod.

4. The method for manufacturing a high-efficiency motor backward-inclined fan blade according to any one of claims 1 to 3, characterized in that: The production steps are as follows: S1. Material selection and cutting: First, the titanium alloy steel plate is cut into shape using a plasma cutting machine, and the area formed by the cutting is larger than the area of ​​the fan blade; S2, CNC modeling: First, the processing environment of the CNC machine tool, part blank, fixture and processing tool to be used is mapped to construct a simulated processing environment, which includes: establishing tool model, fixture model and blank model, establishing machine tool motion model, adding geometric models of each component, accurately positioning, and finally setting machine tool parameters; S3, CNC rough machining: Input the multi-dimensional programming code data of the fan blades into the CNC machine tool control terminal, and use the tool in the CNC machine tool to evenly cut and shape the formed titanium alloy steel plate, and the remaining margin after rough machining is within 2-4mm. After the rough machining is completed, auxiliary materials need to be backfilled; S4, Milling: Cavity milling is used during cutting. Since most of the fan blades are formed curved surfaces, in order to avoid the formation of oxide scale and wear of the tool, the tool cannot stop during the cutting process. The tool is retracted immediately after the cutting is completed. The feed method uses arc feed to make the cutting stable and reduce the impact of the blade on the tool. S5, CNC finishing: Secondly, replace the fine milling cutter, adjust the remaining margin of rough machining to 0, and re-set the tool, and perform fine milling of the prefabricated part by arc feed; S6. After the fan blade prefabricated part is prepared, it is subjected to plastic spraying so that multiple layers of plastic material are attached to the surface of the prefabricated part, which can effectively prevent the fan blade from rusting, thereby completing the production of the backward-inclined fan blade.

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