A motor rotor turning device

Abstract

The application relates to the technical field of turning devices, and particularly discloses a motor rotor turning device, which comprises two groups of supporting rollers for supporting two ends of the rotor, a driving assembly for pressing the rotor and driving the rotor to rotate, and a turning tool assembly for turning the rotor, the two groups of supporting rollers are provided with chip stopping assemblies on the sides close to each other, the chip stopping assembly comprises a shielding cover and a plurality of air blowing pipes, the shielding cover can slide along the rotor axis direction, the inner side opening of the shielding cover can abut against one side of the iron core, the coil of the exposed part of the end of the iron core is covered in the shielding cover, a through hole for passing the rotating shaft is arranged in the middle of the shielding cover, the air blowing pipes are inserted into the gap of the iron core, air is supplied through an external air source, the airflow is sprayed out from the air outlet holes, directly acts on the deep gap of the iron core laminations, blows out the iron chips entering or trying to enter the gap, effectively prevents the iron chips from accumulating in the iron core, and avoids the problem of causing damage to the winding.

Description

Technical Field

[0001] This invention relates to the field of turning apparatus technology, and more specifically to a motor rotor turning apparatus. Background Technology

[0002] In the motor manufacturing and remanufacturing industry, the motor rotor is the core component of the motor. Its machining accuracy and forming quality directly determine the overall operating efficiency, rotational stability, and service life of the motor. There are many types of motor rotors. Some finished motors and motors undergoing repair and modification have already completed the core stacking and winding coil manufacturing during the factory or early assembly stages, and come with a complete winding coil structure. However, due to factors such as assembly errors, operational wear, and deformation deviations, these types of wound rotors still require secondary precision machining. This involves secondary machining correction of key positions such as the rotor core end face, shaft end, and journal to calibrate dimensional and positional tolerances and ensure that the rotor's coaxiality and dimensional accuracy meet the standards.

[0003] During the secondary turning of rotors, metal cutting generates a large amount of fine iron and metal chips. Combined with the high-speed rotation of the rotor during machining, these chips easily splash, scatter, and infiltrate delicate and vulnerable areas such as the winding surface, the gaps between core laminations, and the end coils. Once hard metal chips become stuck in gaps or adhere to the winding surface, they can easily scratch and damage the insulation layer, causing coil short circuits, insulation failures, and other malfunctions, significantly reducing motor performance and safety. Furthermore, cleaning the iron chips embedded in the gaps is difficult, adding extra post-processing steps, slowing down production, and posing equipment safety hazards due to foreign object residue. For secondary turning of motor rotors with winding coil structures, efficiently blocking and quickly cleaning cutting iron chips, and preventing chip intrusion into the gaps between the windings and the core, has become a critical technical challenge in the precision machining and remanufacturing of motor rotors. It is imperative to upgrade and improve traditional rotor turning equipment through dedicated chip-proof, chip-blocking, and chip-removing structural designs.

[0004] Chinese patent document CN202185587U discloses a motor rotor turning device. It includes a frame and a support plate mounted on the upper end of the frame. A spindle mounting base and a machine base are aligned on the upper surface of the support plate. The spindle mounting base houses a spindle whose power input end is connected to a motor drive and whose power output end is connected to the rotor to be turned. The spindle is fixed to the spindle mounting base by bearings. A V-shaped bracket is mounted above the machine base to support bearing positions located at both ends of the rotor to be turned. A machine head driven by a hydraulic cylinder is movably mounted on the rear side of the machine base. The machine head includes a clamping belt fixed to the machine head by at least two first pulleys. During operation, the rotor to be turned is driven by the spindle, the clamping belt is tightened, and the V-shaped bracket is positioned. This device enables large-volume cutting, has high processing efficiency, and effectively improves the surface finish and coaxial accuracy of the machined product.

[0005] Further analysis of existing technologies reveals several shortcomings in current motor rotor machining equipment during practical use. Firstly, most existing rotor machining devices focus on optimizing rotor clamping, positioning, or machining mechanisms, lacking a dedicated protective structure for the iron chips generated during machining. Consequently, during rotor core turning, iron chips easily enter the gaps between the rotor end coils or core laminations under centrifugal force, causing winding damage or affecting motor insulation performance. Secondly, the core lamination structure typically contains multiple gaps or slots, and fine iron chips generated during cutting easily enter these gaps. Existing equipment lacks a chip removal structure that can directly clean the gaps within the core, requiring manual cleaning after machining, increasing labor intensity and reducing production efficiency. Summary of the Invention

[0006] This invention provides a motor rotor turning device, which aims to solve the problem in related technologies that fine iron chips easily enter the gaps between the rotor cores during turning.

[0007] A motor rotor turning device includes two sets of support rollers for supporting both ends of the rotor, a drive assembly for pressing the rotor and driving it to rotate, and a turning tool assembly for turning the rotor. Each of the two sets of support rollers has a chip-blocking assembly on one side close to the other. The chip-blocking assembly includes a shield and multiple air-blowing pipes. The shield can slide along the rotor axis, and its inner opening can abut against one side of the iron core, so that the coil of the exposed part of the iron core end is covered inside the shield. A through hole for the shaft to pass through is provided in the middle of the shield. The air-blowing pipes can be inserted into the gaps in the iron core, and multiple air outlets are provided along their length on the air-blowing pipes. The multiple air-blowing pipes are connected to an external air source.

[0008] Its effects are as follows: By setting chip-blocking components on both sides of the support roller, the shield slides against the end face of the iron core, completely covering the coil exposed at the end of the iron core. This physically prevents metal chips from splashing into the coil area during turning, avoiding scratches on the coil insulation layer. At the same time, by inserting an air pipe into the gap between the iron cores and supplying air through an external air source, the airflow is sprayed out from the air outlet and acts directly on the deep gap between the iron core laminations, blowing out iron chips that have entered or attempted to enter the gap. This effectively prevents iron chips from entering the gap between the iron cores, solving the problem of winding damage and cleaning difficulties caused by the lack of a dedicated chip-blocking structure in the existing technology, ensuring motor performance and reducing the labor intensity of subsequent cleaning.

[0009] Preferably, the inner diameter of the air blowing pipe in one chip-blocking assembly is the same as the outer diameter of the air blowing pipe in the other chip-blocking assembly, and the air blowing pipes on the two chip-blocking assemblies are open at their closest ends. When the shielding cover is pressed against one side of the iron core, the air blowing pipes on the two chip-blocking assemblies are joined together. This joining structure allows the air blowing pipes on both sides to form a connected airflow channel inside the iron core. When high-pressure gas is introduced into one side, the airflow can penetrate the entire gap in the iron core and be discharged from the other side, thereby producing a stronger purging effect and more thoroughly removing iron chips deep in the iron core, preventing iron chips from accumulating in the middle of the gap. At the same time, the mutual support of the air blowing pipes on both sides also enhances the stability of the device during the processing.

[0010] Preferably, the smaller diameter air tube is provided with a tapered guide ring at its end. The guide ring can guide the air tubes on both sides when they approach and mate. Even if there is a slight deviation in the axis of the two air tubes, the tapered surface can guide the smaller tube end to slide smoothly into the larger tube opening, achieving automatic alignment, reducing the difficulty of docking, avoiding tube opening deformation or damage caused by direct collision of the ends, and ensuring the accuracy of air tube docking and the service life of the device.

[0011] Preferably, one end of the air blowing pipe located inside the shield is connected to a flow divider ring via a flexible hose. A rotary joint is mounted on the flow divider ring, and a drive seat is mounted on the rotary joint for driving the shield, rotary joint, and flow divider ring to slide along the rotor axis. By setting up the flow divider ring and flexible hose, the gas from the external air source can be evenly distributed to each air blowing pipe, ensuring consistent air output everywhere. The design of the rotary joint allows the flow divider ring and shield to rotate freely during movement or adjustment without causing the external air pipes to become entangled. The drive seat provides stable power, driving the entire chip-blocking assembly to move precisely along the axis, realizing the automatic action of the shield pressing against the iron core and retracting, thus improving the degree of automation of the operation.

[0012] Preferably, the shield is made of a flexible material, and its inner edge is connected to the air blowing pipe. The flexible material shield has good deformation capability; when its inner edge is connected to the air blowing pipe, it can adapt to changes in the position of the air blowing pipe. When the air blowing pipe is radially adjusted, the shield will not tear or be excessively stretched. Simultaneously, the flexible material can fit tightly against the end face of the iron core, effectively filling the tiny gaps between the shield and the iron core, preventing iron filings from flying in from the edge gaps, and further improving the sealing and protective effect against iron filings.

[0013] Preferably, the shield is equipped with an adjustment component for synchronously driving all air-blowing pipes to converge towards the center or disperse. The adjustment component allows for flexible adjustment of the air-blowing pipe distribution diameter according to the core gap distribution of rotors of different specifications. It enables synchronous control of all air-blowing pipes to converge towards the center or disperse outwards, ensuring that the air-blowing pipes can be accurately aligned and inserted into the gaps in the core. This avoids misalignment problems caused by different rotor models, greatly improving the device's versatility and adaptability to rotors of different sizes.

[0014] Preferably, the adjusting assembly includes a rotating ring and a fixed ring. The fixed ring is fixedly connected to the diverting ring, and multiple connecting rods are hinged to the fixed ring. The other end of each connecting rod is connected to an air blowing pipe. Multiple guide sleeves are hinged to the rotating ring, and the connecting rods slide through the guide sleeves. Through the relative rotation of the rotating ring and the fixed ring, combined with the guiding and limiting functions of the connecting rods and guide sleeves, the rotational motion of the rotating ring is converted into the oscillation of the connecting rods, thereby driving the air blowing pipes to move synchronously in the radial direction. This linkage transmission structure is simple and compact, ensuring the synchronicity and stability of the movement of each air blowing pipe, and ensuring that the air blowing pipes remain uniformly distributed throughout the adjustment process.

[0015] Preferably, the rotating ring is fixedly connected to an adjusting ring via a connecting column. The adjusting ring is rotatably connected to the flow divider ring, and a locking device is installed between the two. The adjusting ring is located outside the shield, allowing for manual rotation by the operator. The connecting column drives the internal rotating ring to rotate, thereby adjusting the position of the air blowing pipe. The locking device is used to fix the adjusting ring to the flow divider ring after adjustment, preventing accidental rotation of the adjusting ring due to equipment vibration during turning, thus ensuring the positional stability of the air blowing pipe during operation.

[0016] Preferably, the outer edge of the shield is connected to the adjusting ring. Fixing the outer edge of the shield to the adjusting ring allows the adjusting ring to function not only as an operating component for adjusting rotation but also as a supporting frame for the shield. When the air pipe moves, causing a change in the position of the inner edge of the shield, the adjusting ring moves the outer edge accordingly, ensuring the flexible shield remains taut and preventing loosening or stacking. This design is both aesthetically pleasing and ensures the shield has sufficient structural strength to resist airflow impact during operation.

[0017] Preferably, the air outlet is elongated and parallel to the axis of the air blowing pipe. The elongated shape of the air outlet extends along the length of the air blowing pipe, significantly increasing the coverage area of ​​the airflow compared to a circular hole. This creates a continuous curtain-like airflow within the gaps in the iron core, allowing for more comprehensive cleaning of iron filings adhering to the inner wall of the gaps. Simultaneously, the elongated design ensures a more uniform airflow distribution, preventing excessive localized airflow from causing impact damage to the iron core or coil, thus improving operational safety while maintaining efficient chip removal.

[0018] By adopting the above technical solution, the beneficial effects of the present invention are as follows: 1. By installing air-blowing pipes at the gaps in the iron core and introducing high-pressure gas, an active air curtain protective barrier is constructed, effectively blocking the path of iron chips into the iron core gaps. During the turning of a motor rotor, the cutting tool generates a large amount of fine and sharp iron chips. Under the centrifugal force generated by the high-speed rotation of the rotor, these chips easily fly along the rotor axis and penetrate into the tiny gaps between the iron core laminations. Once embedded in these gaps, the chips are not only extremely difficult to clean, but may also damage the insulation layer due to vibration during subsequent motor operation. The working principle of this invention is as follows: Before machining, multiple air-blowing pipes are inserted into various gaps in the iron core. When the external air source is turned on, high-pressure gas is continuously ejected from the air outlets on the side walls of the air-blowing pipes. This airflow forms a high-pressure "air wall" or "air curtain" that sprays outward within the narrow iron core gaps. When scattered iron chips attempt to approach or enter the gap openings, they are immediately blocked by this strong airflow. The airflow exerts a reverse thrust on the iron filings, forcing them to change their trajectory and slide down the inner wall of the shield or be blown away from the processing area, thus creating a positive pressure protection zone at the entrance of the iron core gap. This active air-blowing protection method cuts off the channel for iron filings to enter the iron core at the source, avoiding the accumulation of iron filings deep in the gap, and greatly reducing the difficulty of cleaning and the risk of winding short circuits.

[0019] 2. By connecting the air pipes on both sides, the airflow channel inside the iron core is made unobstructed, ensuring chip-proof capability throughout the entire gap and preventing iron chips from accumulating in the middle of the gap. In actual operation, the rotor iron core usually has a certain axial length. If air is blown from only one side, the air pressure will decrease after flowing through the long gap, resulting in insufficient air pressure at the gap opening in the middle section of the iron core or on the other side, which cannot effectively block iron chips from entering. This invention designs the air pipe in the chip-blocking assembly on one side to be inserted into the air pipe on the other side, so that the pipes on both sides are connected inside the iron core. When high-pressure gas is introduced on one side, the airflow can penetrate the entire axial length of the iron core and be smoothly discharged from the other side. This unobstructed airflow design ensures that sufficient outward thrust is maintained along the entire path from the inlet to the outlet of the iron core gap. No matter which end of the iron core the iron chip tries to enter from, it will encounter the outward airflow and be blown out. This working principle completely eliminates airflow blind spots, ensuring that gaps along the entire length of the iron core are effectively protected. It is particularly suitable for turning long iron core rotors, significantly improving the comprehensiveness and reliability of protection.

[0020] 3. By adjusting the components to drive all air-blowing pipes to move radially synchronously, precise matching of the air-blowing pipe positions with the gaps between rotor cores of different specifications is achieved, ensuring the effectiveness of the air curtain protection. Different models of motor rotors have different core diameters, the number of ventilation slots, and the diameter of the distribution circle. If the position of the air-blowing pipe remains fixed, it is impossible to accurately align it with the gaps in the core, leading to difficulties in inserting the air-blowing pipe, or the airflow blowing onto the core and failing to enter the gaps, resulting in protection failure. The working principle of this invention is as follows: by rotating the adjusting ring, the rotating ring is driven to rotate, and the rotational motion is converted into the radial linear motion of the air-blowing pipe using a linkage mechanism. The operator can adjust the diameter of the distribution circle formed by all the air-blowing pipes according to the specific specifications of the rotor to be processed, so that it corresponds one-to-one with the distribution position of the core gaps. When the air-blowing pipe is precisely inserted into the gap, the airflow is confined within the narrow gap channel, and the flow rate and pressure can reach the optimal state, thereby forming the most effective blocking barrier. This adjustable design allows the device to adapt to the processing of rotors of various specifications, ensuring that the air-blowing pipes can play the best chip-proof role under different working conditions, avoiding protection dead angles caused by positional deviations.

[0021] 4. By using a flexible shield and connecting its edges to the air pipe and adjusting ring respectively, a dynamic seal is achieved, preventing iron filings from seeping into the gap between the shield and the core. During turning, iron filings can not only fly from the front but also enter through the contact gap between the shield and the core end face. If the shield is rigid, it is difficult to guarantee a perfect fit with the core end face. The flexible shield has good elastic deformation capability. When the drive seat pushes the shield against the core end face, the flexible material is compressed and deformed, automatically filling any minor unevenness or machining errors that may exist on the core end face, thus forming a tight contact seal. At the same time, because the inner edge of the shield is connected to the air pipe, when the adjusting component changes the position of the air pipe, the shield can stretch or contract accordingly, always maintaining a taut state and preventing gaps from being created due to pipe movement. This dynamic sealing mechanism, combined with the internal airflow of the blowing pipe, forms a double protection: the external layer is physically sealed by a flexible cover, while the internal layer is actively blocked by airflow. The two work together to eliminate the possibility of iron filings entering the coil area and the gap between the iron core, greatly improving the cleanliness of the processing environment and the yield rate of the products. Attached Figure Description

[0022] Figure 1 This is a partial structural diagram of the present invention.

[0023] Figure 2 This is a schematic diagram of the air blowing pipe entering the gap in the iron core in this invention.

[0024] Figure 3 This is a schematic diagram of the structure after the air blowing pipe is connected in this invention.

[0025] Figure 4 This is a front view of the chip-blocking assembly in this invention after the shielding cover has been removed.

[0026] Figure 5 This is a cross-sectional view of the air blowing pipe after it is connected in this invention.

[0027] Figure 6 This is a side view of the rotating ring, fixed ring, and connecting rod in this invention.

[0028] Figure 7 This is a side view of the adjusting ring and the fixing ring in this invention.

[0029] Figure 8 This is a front view of the adjusting ring in this invention.

[0030] Figure label: 1. Support roller; 2. Drive assembly; 3. Cutting tool assembly; 4. Chip guard assembly; 41. Shield; 42. Air pipe; 421. Air outlet; 422. Guide ring; 43. Hose; 44. Diverter ring; 45. Rotary joint; 46. Drive base; 5. Adjustment assembly; 51. Rotating ring; 52. Fixed ring; 53. Connecting rod; 54. Guide sleeve; 55. Connecting column; 56. Adjustment ring; 57. Locking element; 6. Iron core. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] like Figures 1-8 As shown, a motor rotor turning device comprises two sets of support rollers 1 for supporting both ends of the rotor, a drive assembly 2 for pressing the rotor and driving its rotation, a cutting tool assembly 3 for turning the rotor, and a chip-blocking assembly 4 disposed on one side of the two sets of support rollers 1 close to each other. Its general working process is as follows: First, the chip-blocking assembly 4 is moved to the positions of both ends of the iron core 6, and the motor rotor is placed on the two sets of support rollers 1. The chip-blocking assembly 4 is used to block the coil and penetrate into the gap of the iron core 6. Then, the drive assembly 2 presses and drives the rotor to rotate. While the cutting tool assembly 3 is turning the rotor, the chip-blocking assembly 4 introduces high-pressure gas to prevent iron chips from splashing and blow out the iron chips in the gap. After the machining is completed, the components are retracted and the rotor is taken out.

[0033] The support roller 1 includes two rollers arranged in parallel on the machine tool base. The two rollers are mounted on the base through bearing seats and are used to support the rotor shaft. The drive assembly 2 is located on one side of the support roller 1 and includes a drive motor, a reducer and a pressing belt assembly. The drive motor drives the pressing belt assembly to rotate through the reducer. The pressing belt assembly is mounted on a rotatable bracket. The bracket is driven to descend by a cylinder or hydraulic cylinder, so that the pressing belt assembly is pressed against the circumferential surface of the rotating shaft, thereby driving the rotating shaft to rotate at high speed by friction. The cutting tool assembly 3 is mounted on the slide of the machine tool and includes a tool post, a cutting tool, and a feed mechanism. The feed mechanism drives the tool post to move laterally and longitudinally, so that the cutting tool can contact the outer surface of the rotor's iron core 6 for cutting. The support roller 1, the drive assembly 2, and the cutting tool assembly 3 work together to provide stable support, rotational power, and cutting motion for the rotor, ensuring the smooth progress of the turning process.

[0034] There are two chip-blocking assemblies 4, arranged symmetrically. Each chip-blocking assembly 4 includes a shield 41 slidably mounted on the machine tool base and multiple air-blowing pipes 42 installed inside the shield 41. The shield 41 is bell-shaped, with its central axis coinciding with the rotor axis. The inner opening edge of the shield 41 is designed as a plane or a shape matching the end face of the iron core 6, allowing the shield 41 to slide along the rotor axis and tightly abut against one side end face of the iron core 6. When the shield 41 abuts against one side of the iron core 6, the coil of the exposed end of the iron core 6 is completely covered inside the shield 41. The shield 41 has an opening in the middle. The through hole is used to allow the rotating shaft to pass through. The diameter of the through hole is larger than the diameter of the rotating shaft to avoid interference with the rotating shaft. The air blowing pipe 42 is a long and thin metal tube. Multiple pipes are evenly distributed around the central axis of the shield 41. The length direction of the air blowing pipe 42 is parallel to the rotor axis. Its ends can be inserted into the gaps or ventilation slots between the laminations of the iron core 6. The rear end of the air blowing pipe 42 is connected to an external air source. The shield 41 and the air blowing pipe 42 cooperate to ensure that during the turning process, the shield 41 can physically block most of the iron chips flying towards the coil, while the air blowing pipe 42 can penetrate deep into the iron core 6 to prevent iron chips from entering the gaps.

[0035] The inner diameter of the air-blowing pipe 42 in one chip-blocking assembly 4 is the same as the outer diameter of the air-blowing pipe 42 in the other chip-blocking assembly 4, and the ends of the air-blowing pipes 42 on the two chip-blocking assemblies 4 are open and close to each other. When the two shields 41 move from both ends of the rotor and abut against both sides of the iron core 6, the air-blowing pipes 42 on the two chip-blocking assemblies 4 can be connected together, that is, the end of the air-blowing pipe 42 on one side is inserted into the interior of the air-blowing pipe 42 on the other side. This connection method allows the air-blowing pipes 42 on both sides to form a connected channel inside the iron core 6 or to abut against each other. To ensure a close airflow field and avoid dead zones in the airflow, a tapered guide ring 422 is provided at the end of the smaller diameter airflow pipe 42 for easy docking. The larger diameter end of the guide ring 422 is fixedly connected to the airflow pipe 42, while the smaller diameter end extends outward. When the two airflow pipes 42 approach each other, the tapered guide ring 422 can guide and automatically center them. Even if there is a slight deviation in the axis of the two airflow pipes 42, the guide ring 422 can guide the smaller pipe to be smoothly inserted into the larger pipe, ensuring a high success rate of docking and avoiding damage to the pipe ends due to collision.

[0036] One end of the air blowing pipe 42, located inside the shield 41, is connected to a diverter ring 44 via a hose 43. The diverter ring 44 is an annular pipe structure fixed at the rear of the shield 41. An annular cavity is provided inside the diverter ring 44. An external air source's supply pipe is connected to the diverter ring 44 to introduce high-pressure gas into the annular cavity. An air outlet is provided on the diverter ring 44 corresponding to the position of each air blowing pipe 42. The hose 43 connects the air outlet to the air blowing pipe 42, distributing the gas evenly to each air blowing pipe 42. A rotary joint 45 is installed on the diverter ring 44, and the fixed end of the rotary joint 45 is connected to... The external air pipe is connected to the rotating end of the flow divider ring 44, so that the external air pipe will not get tangled when the flow divider ring 44 and the shield 41 rotate. The rotary joint 45 is equipped with a drive seat 46, which is slidably connected to the linear guide rail of the machine tool. The drive seat 46 is driven by a servo motor or cylinder to drive the rotary joint 45, the flow divider ring 44 and the shield 41 to slide along the rotor axis, thereby realizing the automatic feeding and retraction of the shield 41. The setting of the flow divider ring 44 and the rotary joint 45 solves the problems of multi-pipe air supply and pipe tangling, while the drive seat 46 provides stable moving power.

[0037] An adjusting assembly 5 is installed inside the shield 41 to synchronously drive all the air tubes 42 to move closer together or spread out. The adjusting assembly 5 includes multiple connecting rods 53, a rotating ring 51, and a fixed ring 52. The fixed ring 52 is fixedly connected to the diverting ring 44 and is located at the rear end inside the shield 41. Connecting rods 53 are hinged to the fixed ring 52. The number of connecting rods 53 is the same as the number of air tubes 42, and their positions correspond one-to-one. One end of the connecting rod 53 is hinged to the edge of the fixed ring 52 by a pin, and the other end of the connecting rod 53 is hinged to the side wall of the air tube 42. The rotating ring 51 is located in front of the fixed ring 52, and a connecting rod 52 is hinged to the rotating ring 51. Multiple guide sleeves 54 are provided, and the positions of the guide sleeves 54 correspond to the air blowing pipes 42. The middle part of the connecting rod 53 passes through the guide sleeves 54 and is slidably connected to them. When the rotating ring 51 rotates relative to the fixed ring 52, the guide sleeves 54 rotate accordingly. Since one end of the connecting rod 53 is hinged to the fixed ring 52 and the other end is connected to the air blowing pipe 42, the rotation of the rotating ring 51 causes the guide sleeves 54 to drive the connecting rod 53 to change the tilt angle, thereby driving the air blowing pipes 42 to move radially, so that all the air blowing pipes 42 move towards the center or spread outwards synchronously. This connecting rod 53 transmission structure is simple and reliable, and can ensure the consistency of movement of each air blowing pipe 42.

[0038] A rotating ring 51 is fixedly connected to an adjusting ring 56 via a connecting post 55. The adjusting ring 56 is circular and located outside the shield 41. The adjusting ring 56 is rotatably connected to the diverting ring 44. Specifically, an annular groove is provided on the outer wall of the diverting ring 44, and the inner wall of the adjusting ring 56 is embedded in the annular groove, allowing the adjusting ring 56 to rotate freely around the axis of the diverting ring 44. A locking element 57 is installed between the two. The locking element 57 can be a locking screw, an eccentric handle, or a quick clamp. When it is necessary to adjust the position of the air tube 42, the locking element 57 is released. The adjusting ring 56 is manually rotated, and the adjusting ring 56 drives the rotating ring 51 to rotate through the connecting column 55, which in turn drives the connecting rod 53 and the air blowing pipe 42 to move. When it is adjusted to a suitable position and the air blowing pipe 42 is aligned with the gap of the iron core 6, the locking part 57 is tightened to fix the adjusting ring 56 on the diverting ring 44 to prevent the adjusting ring 56 from rotating on its own due to vibration during the processing. The setting of the adjusting ring 56 and the locking part 57 allows the operator to easily and quickly adjust the distribution diameter of the air blowing pipe 42 according to the gap distribution of the iron core 6 of different specifications of rotors.

[0039] The shield 41 is made of a flexible material, such as rubber, canvas, or polymer, possessing a certain degree of elasticity and deformation capability. The inner edge of the shield 41 is connected to the air pipe 42, specifically through bonding, clamping, or sewing. Because the shield 41 is flexible, when the air pipe 42 moves radially under the action of the adjusting component 5, the inner edge of the shield 41 can move with the air pipe 42 without tearing. Simultaneously, the flexible material ensures that when the shield 41 is pressed against the end face of the iron core 6, its elastic deformation fills the tiny gap between the shield 41 and the end face of the iron core 6, improving sealing and preventing iron filings from flying in through the gaps. The outer edge of the shield 41 is connected to the adjusting ring 56. The outer edge of the shield 41 is connected to the adjusting ring 56, and the inner edge is connected to the air blowing pipe 42. When the adjusting ring 56 is rotated to make the air blowing pipe 42 spread outward, the distance between the adjusting ring 56 and the air blowing pipe 42 increases, and the flexible shield 41 is stretched and unfolded. When the air blowing pipe 42 moves closer to the center, the distance between the adjusting ring 56 and the air blowing pipe 42 decreases, and the flexible shield 41 contracts and folds. This connection method ensures that the shield 41 is always in a taut state and will not accumulate or loosen due to the movement of the air blowing pipe 42, thus ensuring the neat appearance and sealing effect of the shield 41. At the same time, the adjusting ring 56, as the supporting frame of the shield 41, also enhances the structural strength of the shield 41, making it stable under the impact of high-speed airflow.

[0040] The air outlet 421 is elongated and parallel to the axis of the air blowing pipe 42. The air outlet 421 is located on the section of the pipe wall where the air blowing pipe 42 is inserted into the gap of the iron core 6. The elongated air outlet 421 extends along the length of the air blowing pipe 42, covering the main area where the air blowing pipe 42 is inserted into the iron core 6. When two air blowing pipes 42 are connected, the air outlet 421 at the connection point will not be completely misaligned and blocked. Therefore, compared with a circular hole, the elongated air outlet 421 can increase the range of airflow jet, forming an air curtain that more comprehensively covers the internal space of the gap of the iron core 6. When high-pressure gas is ejected from the air outlet 421, the airflow blows outward from inside the gap of the iron core 6, which can prevent the iron chips from being turned from entering the gap.

[0041] Working principle: When using this motor rotor turning device, the motor rotor to be processed is first hoisted between two sets of support rollers 1. According to the diameter and gap distribution of the rotor core 6, the locking piece 57 on the adjusting ring 56 is loosened, and the adjusting ring 56 is rotated. The rotating ring 51 is driven to rotate through the connecting column 55. The guide sleeve 54 on the rotating ring 51 pushes the connecting rod 53 to swing, so that all the air blowing pipes 42 move radially synchronously. The distribution diameter of the air blowing pipes 42 is adjusted to align with the gap position on the core 6. Then the locking piece 57 is locked to fix the adjusting ring 56. Next, the drive seat 46 is started. The drive seat 46 drives the rotary joint 45, the diverter ring 44, the shield 41 and the air blowing pipes 42 to move towards the rotor as a whole. When the inner opening of the shield 41 abuts against the end face of the core 6, the drive seat 46 stops moving. At the same time, the support rollers 1 support the two ends of the rotor shaft. At this time, the air blowing pipes 42 on both sides are inserted into the gap of the core 6 under the action of the guide ring 422. Then, drive assembly 2 is activated, pressing down the clamping belt to drive the rotor to rotate at high speed. At the same time, the external air source is turned on, and high-pressure gas enters the air blowing pipe 42 through the diverter ring 44 and the hose 43, and is ejected from the elongated air outlet 421, forming a strong airflow within the gap of the iron core 6. Finally, the cutting tool assembly 3 is activated, and the cutting tool cuts the end face or outer circle of the iron core 6. Some of the iron chips produced are thrown out by the centrifugal force of high-speed rotation and directly hit the inner wall of the shield 41 and slide down. The other part of the iron chips that try to enter the gap are blown out by the high-pressure airflow ejected from the air blowing pipe 42 and blocked outside by the shield 41. After the machining is completed, all components are reset and the rotor is taken out.

[0042] This device effectively solves the problems of metal chips splashing and embedding in the coil and core 6 gaps during turning by setting a movable shield 41 and an air-blowing pipe 42 that extends deep into the gap of the iron core 6. The shield 41 directly covers the end coil, physically blocking most of the metal chips and protecting the coil insulation layer from damage. The air-blowing pipe 42 extends into the gap, and together with the long strip-shaped air outlet 421, it can minimize the entry of metal chips into the gap of the iron core 6, avoiding the difficulty of manual cleaning and the potential for residual hazards. By setting the structure of connecting the air-blowing pipes 42 on both sides, the airflow can penetrate through the interior of the iron core 6, further improving the chip removal efficiency and effect. The design of the adjustment component 5 allows the device to adapt to the machining of rotors with different specifications and gap distributions. The position of the air-blowing pipe 42 can be adjusted simply by rotating the adjustment ring 56, making operation simple and convenient, greatly improving the versatility and production efficiency of the equipment. The application of the flexible shield 41 ensures both airtightness and adapts to the adjustment requirements of the air-blowing pipe 42, extending the service life of the device. The overall structural design is reasonable, which significantly reduces the labor intensity of subsequent cleaning work while ensuring processing quality, and improves the safety and automation level of motor rotor processing.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A motor rotor turning device, comprising two sets of support rollers for supporting both ends of a rotor, a drive assembly for pressing the rotor and driving its rotation, and a turning tool assembly for turning the rotor, characterized in that, Both sets of support rollers are provided with chip-blocking assemblies on their adjacent sides, the chip-blocking assemblies comprising: The shield can slide along the rotor axis. The inner opening of the shield can abut against one side of the iron core, so that the coil of the exposed part of the iron core end is covered inside the shield. The middle part of the shield has a through hole for the shaft to pass through. Multiple air blowing pipes are provided, each of which can be inserted into the gaps in the iron core. Multiple air outlets are provided along the length of each air blowing pipe, and the multiple air blowing pipes are connected to an external air source.

2. The motor rotor turning device according to claim 1, characterized in that, The inner diameter of the air blowing pipe in one chip blocking assembly is the same as the outer diameter of the air blowing pipe in the other chip blocking assembly, and the air blowing pipes on the two chip blocking assemblies are open at one end close to each other. When the shielding cover is pressed against one side of the iron core, the air blowing pipes on the two chip blocking assemblies are connected together.

3. The motor rotor turning device according to claim 2, characterized in that, The end of the air blowing pipe with a smaller diameter is equipped with a tapered guide ring.

4. The motor rotor turning device according to claim 2, characterized in that, One end of the air blowing pipe located inside the shield is connected to a flow divider ring via a flexible hose. A rotary joint is installed on the flow divider ring, and a drive seat for driving the shield, rotary joint, and flow divider ring to slide along the rotor axis is installed on the rotary joint.

5. The motor rotor turning device according to claim 4, characterized in that, The shield is made of flexible material, and the inner edge of the shield is connected to the air blowing pipe.

6. The motor rotor turning apparatus according to claim 5, characterized in that, The shield is equipped with an adjustment component for synchronously driving all the air pipes to move closer to the center or spread out.

7. The motor rotor turning apparatus according to claim 6, characterized in that, The adjustment assembly includes a rotating ring and a fixed ring. The fixed ring is fixedly connected to the diverting ring, and multiple connecting rods are hinged on the fixed ring. The other end of the connecting rods is connected to the air blowing pipe. Multiple guide sleeves are hinged on the rotating ring, and the connecting rods slide through the guide sleeves and are slidably connected to them.

8. The motor rotor turning apparatus according to claim 7, characterized in that, The rotating ring is fixedly connected to an adjusting ring via a connecting column. The adjusting ring is rotatably connected to the diverting ring, and a locking element is installed between the two.

9. The motor rotor turning apparatus according to claim 8, characterized in that, The outer edge of the shield is connected to the adjustment ring.

10. The motor rotor turning apparatus according to claim 2, characterized in that, The air outlet is elongated and parallel to the axis of the air blowing pipe.

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