A fixed tool for dynamic balancing of a rotor assembly

Abstract

This utility model discloses a fixing fixture for dynamic balancing and weight removal of rotor assemblies, relating to the field of rotor assembly dynamic balancing processing technology. It mainly addresses the problem of the lack of suitable fixing fixtures for rotor assemblies during dynamic balancing and weight removal. It includes a base plate, a support plate, and a pressure plate arranged sequentially from bottom to top. The base plate and support plate are fixedly connected by multiple support columns. Multiple locking columns are vertically arranged on the surface of the support plate, with the upper end of each locking column passing through the pressure plate and threaded with a wing nut. Positioning notches are provided at the axial center of both the support plate and the pressure plate, and drill bit clearance openings are provided on the same side of both. A strip-shaped hole is also provided on the base plate, with a fixing nut installed inside the strip-shaped hole. This utility model provides a fixing fixture for dynamic balancing and weight removal of rotor assemblies, which can clamp and fix the rotor assembly. Furthermore, batches of rotor assemblies of the same specification only require one centering operation, ensuring processing quality while improving processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rotor assembly dynamic balancing processing technology, and in particular to a fixed tooling for dynamic balancing and weight removal of rotor assemblies. Background Technology

[0002] "Rotor assembly dynamic balancing and weight reduction" technology is a method used to correct uneven mass distribution in motor rotor assemblies. Its core principle is as follows: when the rotor assembly rotates at high speed, a dynamic balancing machine detects the magnitude and phase position of the imbalance. Then, on the side of the rotor assembly with the heavier mass (opposite to the phase of the imbalance), a small amount of material is precisely removed by drilling. This reduces or eliminates the centrifugal force generated by the mass eccentricity, bringing the rotor assembly to or near its ideal dynamic balance state. This technology ensures smooth rotor assembly operation, reduces vibration and noise, and extends equipment life. It is characterized by its ease of operation, intuitive and permanent results, making it a key process in rotor assembly manufacturing and maintenance.

[0003] However, currently, when performing dynamic balancing and weight reduction machining of rotor assemblies using a drilling machine, the lack of suitable rotor assembly fixing fixtures means that the rotor assembly to be drilled is typically placed vertically on the drilling machine's work platform, and then manually aligned with the drill bit before drilling. This results in a situation where, even when machining rotor assemblies in batches with identical specifications, manual centering is required every time a rotor assembly is changed, which is cumbersome and severely impacts machining efficiency. Furthermore, the lack of fixtures to hold the rotor assembly in place can cause it to wobble during drilling, affecting the machining quality. Utility Model Content

[0004] The purpose of this invention is to provide a fixed fixture for dynamic balancing and weight reduction of rotor assemblies, which can clamp and fix the rotor assembly, and only requires one centering for a batch of rotor assemblies of the same specification, thus ensuring processing quality and improving processing efficiency.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is: a fixed tooling for dynamic balancing and weight removal of a rotor assembly, including a base plate, a support plate and a pressure plate arranged horizontally coaxially from bottom to top. The base plate and the support plate are fixedly connected by multiple support columns arranged vertically around their axes. Multiple locking columns are vertically arranged around the axis of the support plate. The upper end of the locking column passes through the pressure plate and is vertically slidingly fitted with the pressure plate. A wing nut is also threaded onto the upper end of the locking column. The support plate and the pressure plate are both provided with positioning notches at their axial centers to engage with the ends of the rotor assembly. The support plate and the pressure plate are both provided with drill bit clearance openings extending from the edge of the plate to the positioning notches on the same side. The base plate is also provided with strip-shaped holes extending in the same direction as the drill bit clearance openings, and a fixing nut is provided in the strip-shaped holes.

[0006] As a further improvement of this utility model, the bottom plate and the support plate are provided with support column slots for positioning and inserting the end of the support column on their opposite surfaces. The bottom plate surface is provided with countersunk holes that correspond one-to-one with the support column slots, and the countersunk holes are provided with support column fixing screws that pass upward through the bottom plate and are threadedly connected to the support column.

[0007] As a further improvement of this utility model, the number of locking posts and support posts are the same and they are arranged in a one-to-one correspondence. A connecting screw is vertically provided on the lower end face of the locking post, passing downward through the support plate and threadedly connected to the support post.

[0008] As a further improvement of this utility model, the inner edge of the positioning notch is provided with a positioning step that engages with the outer edge of the rotor assembly end.

[0009] As a further improvement of this utility model, there are two strip holes, and the two strip holes are located on both sides of the bottom plate respectively.

[0010] As a further improvement of this utility model, a motor shaft clearance opening is also provided at the center of the base plate.

[0011] Beneficial effects Compared with the prior art, the advantages of the fixed tooling for dynamic balancing and weight reduction of rotor assembly of this utility model are as follows: 1. In this tooling, the fixing nuts on the base plate can fix the tooling to the working platform of the drilling machine; with the positioning notches set on the support plate and pressure plate, the rotor assembly can be clamped and fixed on the working platform of the drilling machine, thereby preventing the rotor assembly from shaking during drilling and ensuring the processing quality. Meanwhile, by locking the base plate with the fixing nut and the slotted hole, the tooling is fixed. This means that the position of the entire tooling can be adjusted before the fixing nut is tightened, thereby achieving the centering adjustment of the rotor assembly. Furthermore, after the rotor assembly is centered, only the fixing nut needs to be tightened. Subsequent rotor assemblies of the same specification do not need to repeat the centering process. That is, a batch of rotor assemblies of the same specification only needs to be centered once, thereby reducing the trouble caused by repeated centering. This makes it convenient to use and improves processing efficiency.

[0012] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a diagram showing the usage state of this utility model; Figure 3 This is a cross-sectional view of the present invention in use.

[0015] Wherein: 1-base plate; 11-strip hole; 12-motor clearance opening; 2-fixing nut; 3-support column; 4-support plate; 5-locking column; 6-wing nut; 7-pressure plate; 8-positioning notch; 81-drill bit clearance opening; 9-drill bit. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0019] Example: The specific embodiments of this utility model are as follows: Figure 1-3As shown, a fixed fixture for dynamic balancing and weight reduction of a rotor assembly includes a base plate 1, a support plate 4, and a pressure plate 7 arranged horizontally and coaxially from bottom to top. The base plate 1 and the support plate 4 are fixedly connected by multiple vertically arranged support columns 3 surrounding their axes. Multiple locking columns 5 are vertically arranged around the axis of the support plate 4. The upper end of each locking column 5 passes through the pressure plate 7 and has a vertical sliding fit with it. A wing nut 6 is threaded onto the upper end of each locking column 5. Both the support plate 4 and the pressure plate 7 have positioning notches 8 at their axes that engage with the ends of the rotor assembly; and both the support plate 4 and the pressure plate 7 have drill bit clearance openings 81 extending from the edge of the plate to the positioning notches 8 on the same side. The base plate 1 also has a strip-shaped hole 11 extending in the same direction as the drill bit clearance opening 81, and a fixing nut 2 is installed inside the strip-shaped hole 11.

[0020] In use, first place the base plate 1 horizontally on the work platform of the drilling machine, and initially install the entire fixture below the drill bit 9 through the fixing nut 2 on the base plate 1 and the pre-drilled screw holes on the work platform, so that the drill bit 9 is roughly aligned with the drill bit clearance opening 81. Then, place the rotor assembly vertically between the support plate 4 and the pressure plate 7, and position and install the rotor assembly through the positioning notch 8, so that the side of the rotor assembly to be de-weighted is at the drill bit clearance opening 81. After that, tighten the wing nuts 6 at the upper end of each locking pin 5 to clamp and fix the rotor assembly with the support plate 4 and the pressure plate 7. Next, using the strip hole 11 on the base plate 1 that extends in the same direction as the drill bit clearance opening 81, and with the fixing nut 2 that has not yet been tightened, move the entire fixture horizontally to achieve the centering adjustment of the rotor assembly. Finally, the rotor assembly can be dynamically balanced and de-weighted through drilling using the drilling machine.

[0021] After completing the dynamic balancing and de-weighting drilling for a rotor assembly, when replacing it with a new rotor assembly, simply raise the drill bit 9, then remove the wing nut 6 and pressure plate 7 in sequence to remove the machined rotor assembly. Next, place a rotor assembly of the same specifications between the support plate 4 and pressure plate 7, and repeat the above steps of clamping and fixing the rotor assembly. It should be noted that since the specifications of the rotor assembly remain unchanged during this process, the aforementioned centering adjustment is unnecessary.

[0022] Compared to existing tooling-less dynamic balancing and weight reduction machining of rotor assemblies, this tooling uses a fixing nut 2 on the base plate 1 to securely connect the tooling to the drilling machine's work platform. Combined with the positioning notches 8 on the support plate 4 and pressure plate 7, the rotor assembly can be clamped and fixed onto the drilling machine's work platform. This prevents the rotor assembly from shaking during drilling, ensuring machining quality. Simultaneously, the fixing nut 2, in conjunction with the slotted hole 11, locks the base plate 1, thus securing the tooling. This also means that the position of the entire tooling can be adjusted before tightening the fixing nut 2, achieving centering adjustment of the rotor assembly. Furthermore, after the rotor assembly is centered, only the fixing nut 2 needs to be tightened; subsequent rotor assemblies of the same specification do not require repeating the centering process. This means that a batch of rotor assemblies of the same specification only needs one centering, reducing the hassle of repeated centering, improving both ease of use and machining efficiency.

[0023] In this tooling, such as Figure 3 As shown, the specific connection method between the support column 3 and the base plate 1 and support plate 4 is as follows: Both the base plate 1 and support plate 4 have support column slots on their opposite surfaces for the positioning and insertion of the end of the support column 3. The lower surface of the base plate 1 has countersunk holes corresponding to the support column slots, and these countersunk holes contain support column fixing screws that pass upwards through the base plate 1 and threadedly connect with the support column 3. This design allows for very convenient assembly of the support column 3 with the base plate 1 and support plate 4, making the operation very convenient.

[0024] In this embodiment, to enhance the overall integrity and structural strength of the tooling, the number of locking posts 5 and support posts 3 are the same, and they are arranged in a one-to-one correspondence. Furthermore, a connecting screw is vertically provided on the lower end face of the locking post 5, passing downward through the support plate 4 and threadedly connected to the support post 3. Thus, the pressure plate 7, locking posts 5, support plate 4, support posts 3, and base plate 1 can be connected as a whole, thereby improving the overall structural strength of the tooling.

[0025] Meanwhile, to facilitate the positioning and installation of the rotor assembly, positioning steps are provided on the inner edge of the positioning notch 8 to engage with the outer edge of the rotor assembly end. This design ensures that the installation position of rotor assemblies of the same specification will not shift, thus eliminating the need for repeated centering when replacing rotor assemblies of the same specification and ensuring processing efficiency.

[0026] In addition, this fixture has two strip holes 11, and the two strip holes 11 are located on both sides of the base plate 7. This design is to fix the installation position of the fixture and prevent it from shifting due to drilling vibration.

[0027] It is important to note that: To prevent the motor shaft from colliding with the base plate 7, this fixture is also provided with a motor shaft clearance opening 12 at the center of the base plate 7.

[0028] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A fixed fixture for dynamic balancing and weight reduction of a rotor assembly, characterized in that, The system includes a base plate (1), a support plate (4), and a pressure plate (7) arranged horizontally and coaxially from bottom to top. The base plate (1) and the support plate (4) are fixedly connected by multiple support columns (3) arranged vertically around their axes. Multiple locking columns (5) are arranged vertically around the axis of the support plate (4). The upper end of the locking column (5) passes through the pressure plate (7) and is vertically slidingly engaged with the pressure plate (7). A wing nut (6) is also threaded onto the upper end of the locking column (5). The support plate (4) and the pressure plate (7) are provided with positioning notches (8) at the center of the shaft to engage with the end of the rotor assembly. The support plate (4) and the pressure plate (7) are provided with drill bit clearance openings (81) extending from the edge of the plate to the positioning notches (8) on the same side. The base plate (1) is also provided with a strip hole (11) extending in the same direction as the drill bit clearance opening (81), and a fixing nut (2) is provided in the strip hole (11).

2. The fixed fixture for dynamic balancing and weight reduction of the rotor assembly according to claim 1, characterized in that, The base plate (1) and the support plate (4) are provided with support column slots on their opposite surfaces for positioning and inserting the end of the support column (3). The lower plate surface of the base plate (1) is provided with countersunk holes that correspond one-to-one with the support column slots, and the countersunk holes are provided with support column fixing screws that pass upward through the base plate (1) and are threadedly connected to the support column (3).

3. The fixed fixture for dynamic balancing and weight reduction of the rotor assembly according to claim 2, characterized in that, The number of locking posts (5) and support posts (3) are the same and they are set one to one. The lower end face of the locking post (5) is provided with a connecting screw that passes through the support plate (4) and is threaded to the support post (3).

4. The fixed fixture for dynamic balancing and weight reduction of the rotor assembly according to claim 1, characterized in that, The inner edge of each positioning notch (8) is provided with a positioning step that engages with the outer edge of the rotor assembly end.

5. The fixed fixture for dynamic balancing and weight reduction of the rotor assembly according to claim 1, characterized in that, There are two strip holes (11), and the two strip holes (11) are located on both sides of the bottom plate (1).

6. The fixed fixture for dynamic balancing and weight reduction of the rotor assembly according to claim 1, characterized in that, The base plate (1) is also provided with a motor shaft clearance opening (12) at the center of the shaft.

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