An automatic positioning external rotor dynamic balancing machine

Abstract

This utility model discloses an automatic positioning external rotor dynamic balancing machine, specifically relating to the field of balancing machine technology. It includes an external rotor dynamic balancing machine body, with an automatic positioning auxiliary device installed at the upper end of the machine body. The automatic positioning auxiliary device includes a bottom adjustment component and an automatic adjustment positioning component. Compared with existing technologies, this utility model achieves automatic positioning and adjustment through an automatic positioning external rotor dynamic balancing machine, significantly shortening changeover time. The inner cavity is free of mandrel obstruction, allowing the drive belt to directly wrap around the outer circumference of the external rotor. This increases the balancing speed, enabling the excitation of higher-order vibration modes and improving the sensitivity of imbalance detection. Compared with existing mandrel expansion sleeve structures, this solution, through an integrated design of "groove-type initial centering, hydraulic secondary tensioning, and rotary loading and unloading," eliminates the need for manual positioning, greatly reducing operational difficulty and further improving the overall processing efficiency of the device.

Description

Technical Field

[0001] This utility model relates to the field of balancing machine technology, and more specifically, to an automatic positioning external rotor dynamic balancing machine. Background Technology

[0002] Industries such as external rotor fans, motors, and hubs have extremely high requirements for dynamic balancing. However, the external rotor itself has a "cup-shaped" structure and no central shaft extension. Traditional balancing machines use a mandrel and expansion sleeve for clamping. The current method requires manual handling of workpieces weighing nearly 100 kilograms to align with the expansion sleeve, which is labor-intensive and prone to damage. The expansion sleeve tightening force relies on experience and a wrench, resulting in significant repeatability errors. The balancing result drifts with changes in clamping force. Different outer diameters require replacement of the entire mandrel and flange set, leading to long changeover times and making it difficult to meet the needs of flexible production of multiple varieties in small batches. Furthermore, the mandrel occupies internal space, hinders the drive belt insertion, limits the balancing speed, and prevents the excitation of higher-order vibration modes. Therefore, a mandrel-free external rotor dynamic balancing machine that can automatically center and quickly change models is needed. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide an automatic positioning external rotor dynamic balancing machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automatic positioning external rotor dynamic balancing machine, comprising an external rotor dynamic balancing machine body, wherein an automatic positioning auxiliary device is provided at the upper end of the external rotor dynamic balancing machine body, the automatic positioning auxiliary device comprising: a bottom adjustment component and an automatic adjustment positioning component, wherein the lower end of the automatic adjustment positioning component is provided at the upper end of the bottom adjustment component.

[0005] In a preferred embodiment, the bottom adjustment assembly includes: a test processing cover plate, a rotating protective cover, and a drive motor. The lower end of the drive motor is mounted on the upper end of the outer rotor dynamic balancing machine body, and the front side of the upper end of the outer rotor dynamic balancing machine body is mounted on the lower end of the test processing cover plate. The test processing cover plate is L-shaped.

[0006] In a preferred embodiment, the automatic adjustment positioning component includes: a positioning seat, a first electro-hydraulic cylinder, a second electro-hydraulic cylinder, a sliding block, a slide groove, a pulling block, a transverse electric telescopic rod, a pre-positioning placement frame, a self-positioning adjustment groove, and a positioning clamp. The positioning clamp is provided in two sets, and the outer walls of the two sets of positioning clamps are installed on both sides of the inner wall of the self-positioning adjustment groove.

[0007] In a preferred embodiment, the self-positioning adjustment groove is formed on the upper end of the pre-positioning placement frame, the lower end of the pre-positioning placement frame is installed on the upper end of the sliding block, two sets of sliding blocks are provided, and the lower ends of the two sets of sliding blocks are then movably installed inside the sliding groove, and two sets of sliding grooves are provided.

[0008] In a preferred embodiment, the slide is formed on the upper front side of the positioning seat, the positioning seat is L-shaped, and the lower end of the positioning seat is installed at the output end of the drive motor.

[0009] In a preferred embodiment, the workpiece is placed inside the self-positioning adjustment groove, the output end of the second electric hydraulic cylinder is installed at the rear end of the transverse electric telescopic rod, and two sets of the transverse electric telescopic rod and the second electric hydraulic cylinder are provided, with the lower ends of the two sets of second electric hydraulic cylinders installed on the outer walls of the front sides of the positioning seat.

[0010] In a preferred embodiment, the output end of the first electro-hydraulic cylinder is installed at the rear end of the pre-positioning frame, the lower end of the first electro-hydraulic cylinder is installed at the upper front end of the positioning seat, the pull block is provided with a through groove, and the two sets of output ends of the transverse electric telescopic rod both penetrate the inner and outer walls of the pull block.

[0011] The technical effects and advantages of this utility model are as follows: An automatic positioning external rotor dynamic balancing machine, compared with existing technologies, achieves automatic positioning and adjustment, high repeatability, and stable balancing results. The positioning clamp can slide within the groove, adapting to multiple outer diameter specifications. During model changeover, only the hydraulic cylinder stroke needs to be adjusted, significantly shortening the changeover time. The inner cavity is free of mandrel obstruction, and the drive belt can directly wrap around the outer circle of the external rotor, increasing the balancing speed and enabling the excitation of higher-order vibration modes, thereby improving the sensitivity of imbalance detection. Compared with existing mandrel expansion sleeve structures, this solution adopts an integrated design of "groove-type initial centering, hydraulic secondary tensioning, and rotary loading and unloading," eliminating the need for manual positioning, greatly reducing the difficulty of operation, and further improving the processing efficiency of the entire device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the automatic positioning auxiliary device of this utility model.

[0014] Figure 3 This is a schematic diagram of the bottom adjustment component structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the automatic adjustment and positioning component of this utility model.

[0016] The attached figures are labeled as follows: 1. External rotor dynamic balancing machine body; 2. Automatic positioning auxiliary device; 21. Bottom adjustment assembly; 211. Test and processing upper cover plate; 212. Rotating protective cover; 213. Drive motor; 22. Automatic adjustment and positioning assembly; 221. Positioning seat; 222. Slide groove; 223. Sliding block; 224. Pre-positioning placement frame; 225. Pulling block; 226. Second electric hydraulic cylinder; 227. Lateral electric telescopic rod; 228. Processed workpiece; 229. First electric hydraulic cylinder; 220. Positioning clamp. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] As attached Figure 1 , 4 As shown, this utility model provides an automatic positioning external rotor dynamic balancing machine, including an external rotor dynamic balancing machine body 1. An automatic positioning auxiliary device 2 is provided on the upper end of the external rotor dynamic balancing machine body 1. The automatic positioning auxiliary device 2 includes a bottom adjustment component 21 and an automatic adjustment positioning component 22. The lower end of the automatic adjustment positioning component 22 is provided on the upper end of the bottom adjustment component 21.

[0019] The bottom adjustment assembly 21 includes: a test processing upper cover plate 211, a rotating protective cover 212, and a drive motor 213. The lower end of the drive motor 213 is installed on the upper end of the outer rotor dynamic balancing machine body 1, and the front side of the upper end of the outer rotor dynamic balancing machine body 1 is installed on the lower end of the test processing upper cover plate 211. The test processing upper cover plate 211 is L-shaped.

[0020] The automatic adjustment positioning component 22 includes: a positioning seat 221, a first electric hydraulic cylinder 229, a second electric hydraulic cylinder 226, a sliding block 223, a slide groove 222, a pulling block 225, a transverse electric telescopic rod 227, a pre-positioning placement frame 224, a self-positioning adjustment groove 2201, and a positioning clamp 220. Two sets of positioning clamps 220 are provided, and the outer walls of the two sets of positioning clamps 220 are installed on both sides of the inner wall of the self-positioning adjustment groove 2201. The self-positioning adjustment groove 2201 is located at the upper end of the pre-positioning placement frame 224, and the lower end of the pre-positioning placement frame 224 is installed at the upper end of the sliding block 223. Two sets of sliding blocks 223 are provided, and the lower ends of the two sets of sliding blocks 223 are further movable and installed inside the slide groove 222. Two sets of slide grooves 222 are provided, and the slide groove 222 is located at the upper end of the pre-positioning placement frame 2201. At the upper front end of the positioning seat 221, the positioning seat 221 is L-shaped. The lower end of the positioning seat 221 is installed at the output end of the drive motor 213. The workpiece 228 is placed inside the self-positioning adjustment groove 2201. The output end of the second electric hydraulic cylinder 226 is installed at the rear end of the transverse electric telescopic rod 227. There are two sets of both the transverse electric telescopic rod 227 and the second electric hydraulic cylinder 226. The lower ends of the two sets of second electric hydraulic cylinders 226 are installed on the outer walls of the front sides of the positioning seat 221. The output end of the first electric hydraulic cylinder 229 is installed at the rear end of the pre-positioning placement frame 224. The lower end of the first electric hydraulic cylinder 229 is installed at the upper front end of the positioning seat 221. The pull block 225 is provided with a through groove. The two sets of output ends of the transverse electric telescopic rod 227 pass through the inner and outer walls of the pull block 225.

[0021] The specific implementation method is as follows: When using this utility model, the drive motor 213 rotates the protective cover 212 to drive the positioning seat 221 to rotate as a whole, so that the pre-positioning placement frame 224 enters the loading station; the workpiece 228 is placed into the self-positioning adjustment groove 2201, and the two sets of positioning clamps 220 slide synchronously under the guidance of the inclined surface in the groove to achieve initial centering; the first electric hydraulic cylinder 229 pushes the pre-positioning placement frame 224 forward along the slide groove 222, so that the outer circle of the workpiece is in contact with the elastic drive wheel on the test processing cover plate 211; the second electric hydraulic cylinder 226 drives the transverse electric telescopic rod 227 to extend forward, and finally locks the positioning clamps 220 through the pulling block 225, completing automatic centering and tensioning; after the balance test is completed, the positioning seat 221 rotates as a whole to the unloading position, and each hydraulic cylinder releases the clamp in sequence, and the workpiece falls freely, realizing "loading, centering, testing, and loading". The fully automatic cycle of "clamping and unloading" is achieved through the self-positioning adjustment groove 2201 cooperating with the inclined guide positioning clamp 220 to automatically perform positioning and fixing work, eliminating the need for manual alignment and reducing operational difficulty. The first electric hydraulic cylinder 229 and the second electric hydraulic cylinder 226 operate sequentially to achieve automatic positioning adjustment with high repeatability and stable balancing results. The positioning clamp 220 can slide within the groove to accommodate multiple outer diameter specifications. During model changeover, only the hydraulic cylinder stroke needs to be adjusted, significantly shortening the model changeover time. The inner cavity is free of mandrel obstruction, and the drive belt can directly wrap around the outer circle of the outer rotor, increasing the balancing speed and enabling the excitation of higher-order vibration modes, thereby improving the sensitivity of imbalance detection. Compared with the existing mandrel expansion sleeve structure, this solution, through the integrated design of "groove-type initial centering, hydraulic secondary tensioning, and rotary loading and unloading," eliminates the need for manual positioning, greatly reducing operational difficulty and further improving the processing efficiency of the entire device.

[0022] The working principle of this utility model is as follows: When using this utility model, the drive motor 213 rotates the protective cover 212 to drive the positioning seat 221 to rotate as a whole, so that the pre-positioning placement frame 224 enters the loading station; the workpiece 228 is placed into the self-positioning adjustment groove 2201, and the two sets of positioning clamps 220 slide synchronously under the guidance of the inclined surface in the groove to achieve initial centering; the first electric hydraulic cylinder 229 pushes the pre-positioning placement frame 224 forward along the slide groove 222, so that the outer circle of the workpiece is in contact with the elastic drive wheel on the test processing cover plate 211; the second electric hydraulic cylinder 226 drives the transverse electric telescopic rod. 227 extends forward, and the positioning clamp 220 is finally locked by the pull block 225, completing automatic centering and tensioning; after the balance test is completed, the positioning seat 221 rotates to the unloading position as a whole, and each hydraulic cylinder releases in sequence, allowing the workpiece to fall freely, realizing a fully automatic cycle of "loading, centering, testing, releasing, and unloading". The self-positioning adjustment groove 2201 cooperates with the inclined guide positioning clamp 220 to automatically perform positioning and fixing work, eliminating the need for manual alignment and reducing the difficulty of operation. The first electric hydraulic cylinder 229 and the second electric hydraulic cylinder 226 move in sequence to achieve automatic positioning adjustment with high repeatability.

[0023] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic positioning outer rotor balancing machine comprising an outer rotor balancing machine body (1), characterized in that: An automatic positioning auxiliary device (2) is provided on the upper end of the external rotor dynamic balancing machine body (1). The automatic positioning auxiliary device (2) includes a bottom adjustment component (21) and an automatic adjustment positioning component (22), with the lower end of the automatic adjustment positioning component (22) disposed on the upper end of the bottom adjustment component (21).

2. An automatic positioning outer rotor dynamic balancing machine according to claim 1, characterized in that: The bottom adjustment assembly (21) includes: a test processing upper cover plate (211), a rotating protective cover (212), and a drive motor (213). The lower end of the drive motor (213) is installed on the upper end of the outer rotor dynamic balancing machine body (1). The upper front side of the outer rotor dynamic balancing machine body (1) is installed on the lower end of the test processing upper cover plate (211). The test processing upper cover plate (211) is L-shaped.

3. An automatic positioning outer rotor dynamic balancing machine according to claim 2, characterized in that: The automatic adjustment positioning component (22) includes: a positioning seat (221), a first electric hydraulic cylinder (229), a second electric hydraulic cylinder (226), a sliding block (223), a sliding groove (222), a pulling block (225), a transverse electric telescopic rod (227), a pre-positioning placement frame (224), a self-positioning adjustment groove (2201), and a positioning clamp (220). The positioning clamp (220) is provided in two sets, and the outer walls of the two sets of positioning clamps (220) are installed on both sides of the inner wall of the self-positioning adjustment groove (2201).

4. An automatic positioning outer rotor dynamic balancing machine according to claim 3, characterized in that: The self-positioning adjustment groove (2201) is opened on the upper end of the pre-positioning placement frame (224), and the lower end of the pre-positioning placement frame (224) is installed on the upper end of the sliding block (223). There are two sets of sliding blocks (223), and the lower ends of the two sets of sliding blocks (223) are then moved and installed inside the slide groove (222). There are two sets of slide grooves (222).

5. The automatic positioning external rotor dynamic balancing machine according to claim 3, characterized in that: The slide (222) is opened on the upper front side of the positioning seat (221). The positioning seat (221) is L-shaped, and the lower end of the positioning seat (221) is installed at the output end of the drive motor (213).

6. An automatic positioning outer rotor dynamic balancing machine according to claim 3, characterized in that: The self-positioning adjustment groove (2201) contains a workpiece (228), and the output end of the second electric hydraulic cylinder (226) is installed at the rear end of the horizontal electric telescopic rod (227). The horizontal electric telescopic rod (227) and the second electric hydraulic cylinder (226) are each provided with two sets, and the lower ends of the two sets of second electric hydraulic cylinders (226) are installed on the outer walls of the front sides of the positioning seat (221).

7. An automatic positioning outer rotor dynamic balancing machine according to claim 3, characterized in that: The output end of the first electric hydraulic cylinder (229) is installed at the rear end of the prepositioning frame (224), and the lower end of the first electric hydraulic cylinder (229) is installed at the upper front side of the positioning seat (221). The pull block (225) has a through groove inside, and the two sets of output ends of the transverse electric telescopic rod (227) both penetrate the inner and outer walls of the pull block (225).

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