Drilling and tapping integrated equipment for rotor magnet yoke assembly

Abstract

The invention discloses drilling and tapping integrated equipment for a rotor magnet yoke assembly, and belongs to the technical field of machining. Comprising a machining table, a fixing mechanism, a drilling mechanism, a tapping mechanism and a spraying assembly, the spraying assembly is provided with a flow path control valve body and a cam transmission mechanism, and the cam transmission mechanism is mechanically connected with the feeding driving end of the drilling or tapping power head. According to the drilling and tapping integrated equipment for the rotor magnet yoke assembly, the linear tool retracting motion of a tool is converted into cam rotation through a gear and rack transmission mechanism, the valve body is driven to instantly reduce the circulation cross section, and cutting fluid forms pulse type high-pressure jet flow to directly hit the bottom of a hole; and meanwhile, the cam linkage drives the shielding mechanism to synchronously stretch out to wrap the processing area. The chip removal resistance during deep blind hole machining is effectively overcome, the cooling blind area is eliminated, and the splashing problem caused by high-pressure spraying is solved.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a drilling and tapping integrated device for a rotor magnetic yoke assembly. Background Technology

[0002] As a core component of the motor rotor, the rotor yoke typically has several blind holes distributed on its circumference for mounting magnets or counterweights. Currently, automated machining of rotor yoke components is often achieved using integrated drilling and tapping equipment. Such equipment usually includes a clamping mechanism, a drilling head, and a tapping head. During machining, to reduce cutting heat and extend tool life, the equipment is generally equipped with a cooling circulation system, which sprays cutting fluid onto the cutting point through external nozzles (such as universal joint tubes) located on the side of the spindle. This traditional fluid supply method is a continuous external pouring system, whose main function is to provide overall cooling and lubrication to the machining area. It is suitable for most conventional drilling and tapping operations and can meet the basic heat dissipation requirements for general shallow hole or through-hole machining.

[0003] When machining deep blind holes for rotor yokes, conventional external spraying methods typically employ constant pressure spraying. The cutting fluid is blocked by the tool's spiral grooves and the gaps between the hole walls, making it difficult to effectively penetrate to the bottom of the hole, resulting in a cooling blind zone inside the hole. Furthermore, the scouring force of the cutting fluid's natural flow alone cannot effectively overcome the chip removal resistance inside the deep hole, causing viscous cutting chips to easily accumulate and be squeezed at the bottom of the hole, thereby leading to tool wear.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] This invention provides a rotor yoke assembly drilling and tapping integrated device to solve the technical problem that when machining deep blind holes for rotor yokes, conventional constant pressure spraying is difficult to penetrate to the bottom of the hole, resulting in the accumulation and compression of sticky chips at the bottom of the hole, which in turn causes cooling blind zones and tool wear.

[0006] This invention employs the following technical solution: a rotor yoke assembly drilling and tapping integrated device. It includes a processing table and a fixing mechanism, a drilling mechanism, and a tapping mechanism mounted thereon; characterized in that it further includes: a spraying assembly, which is equipped with a flow path control valve body and a cam transmission mechanism, the cam transmission mechanism being mechanically connected to the feed drive end of the drilling mechanism or the tapping mechanism; when machining deep blind holes in the rotor yoke, the spraying assembly utilizes the cam transmission mechanism to convert the linear retraction motion of the cutting tool into the flow path adjustment operation of the valve body, causing the cutting fluid to form a pulsed high-pressure jet, which is then sprayed into the deep blind hole through a flushing mechanism to overcome the chip removal resistance within the hole and eliminate the cooling blind zone.

[0007] Furthermore, the spraying assembly includes a mounting box and a sealing box; the cam transmission mechanism includes a rotating shaft rotatably mounted on the mounting box, a gear fixed on the rotating shaft, and a first cam; it also includes a pipe clamp and a rack fixed on the moving end of the drilling mechanism or tapping mechanism, the rack meshing with the gear; it is suitable for driving the gear and the first cam to rotate synchronously through the rack when the power head makes a linear up-and-down displacement.

[0008] Furthermore, the sealed box is equipped with a liquid storage pipe, the outlet path of which is normally open; the sealing plug is connected to a movable rod, and a return spring is fitted on the movable rod to keep the sealing plug in the open position; a touch rod is slidably provided on the mounting box, one end of which abuts against the contour surface of the first cam, and the other end abuts against the movable rod; it is suitable that when the first cam rotates to a specific angle, the touch rod pushes the movable rod to overcome the resistance of the return spring and displace it, driving the sealing plug to move towards the constriction of the outlet of the liquid storage pipe to reduce the flow cross-sectional area, thereby forming a high-pressure jet.

[0009] Furthermore, the flushing mechanism includes a connecting hose and a universal bamboo tube; the bottom of the sealing box is provided with a liquid inlet port, the connecting hose connects the liquid inlet port and the universal bamboo tube, and the universal bamboo tube is positioned on the side of the processing area by a support frame.

[0010] Furthermore, a shielding mechanism is provided, which is adapted to cover the outer periphery of the processing area of ​​the rotor yoke assembly. The shielding mechanism includes a fixed cylinder and a movable cylinder slidably connected to the fixed cylinder. The connecting spring abuts against one end of the inner wall of the fixed cylinder and one end of the movable cylinder, so that the movable cylinder has elastic potential energy to extend axially. The movable cylinder forms a guide structure that reciprocates and extends along the axial direction relative to the fixed cylinder, and the front end of the movable cylinder is provided with a shielding ring, the end face of which is adapted to tightly fit the outer surface of the rotor yoke assembly.

[0011] Furthermore, a second cam is fixed on the rotating shaft of the cam transmission mechanism; the mounting box is fixedly connected to one side of the sealing box, and the rotating shaft is rotatably supported inside the mounting box via a connecting rod; a vertically extending contact rod is fixedly provided on the shielding ring, and a rotating wheel is provided at the end of the contact rod, which is adapted to extend into the mounting box through the rotating wheel to form a rolling abutment engagement with the contour surface of the second cam; a displacement groove is provided on the bottom wall of the mounting box for the contact rod to move, and cover plates are fixed on both sides of the contact rod, which are adapted to always cover the displacement groove when the contact rod is displaced, so as to prevent cutting fluid from entering the interior of the mounting box; an opening groove is provided on the side wall of the mounting box, and the rack slides through the opening groove via a slider and is connected to the tube clamp; an extension box is connected to the bottom of the mounting box, which is adapted to accommodate the vertical movement stroke of the rack and prevent cutting fluid from splashing onto the rack surface.

[0012] Furthermore, a nylon brush ring is provided on the inner side of the shielding ring, which is suitable for scraping away and blocking cutting fluid and chip splashes when the shielding ring moves relative to the rotor yoke assembly.

[0013] Furthermore, the tapping mechanism includes a vertically arranged linear motion module one and a sliding seat one, with the tapping head and drive box one mounted on the sliding seat one; the drilling mechanism includes a horizontally arranged linear motion module two and a sliding seat two, with the drill bit, gearbox one and drive motor mounted on the sliding seat two, and the drive motor driving the drill bit through the gearbox one; the drilling mechanism and the tapping mechanism are distributed at right angles.

[0014] Furthermore, the fixing mechanism includes a linear motion module three and a sliding seat three. The sliding seat three is provided with a drive box two, a gear box two, and a four-jaw chuck for clamping the rotor magnetic yoke assembly. The four-jaw chuck is connected to the output end of the gear box two. The linear motion module three is provided with a protective telescopic cover on its outer side.

[0015] Furthermore, the machining table is surrounded by a protective cover, and the top of the sealed box is provided with a connecting end for connecting an external cutting fluid supply pump.

[0016] The above-mentioned at least one technical solution adopted in this invention can achieve the following beneficial effects: A rotor yoke assembly drilling and tapping integrated device, by setting up a spraying component mechanically connected to the feed drive end of the drilling mechanism, and using a cam transmission mechanism to form a mechanical linkage mechanism, can directly convert the linear retraction motion of the tool into the opening operation of the flow path control valve body when machining deep blind holes of the rotor yoke. This allows the cutting fluid to form a high-energy pulse jet in the retraction gap. The jet is sprayed into the deep blind hole through a flushing mechanism, effectively solving the problem that conventional constant pressure spraying is difficult to penetrate to the bottom of the hole due to the obstruction of the tool's spiral groove and the hole wall. The impact force of the high-pressure fluid overcomes the chip removal resistance inside the deep hole, discharges the cutting chips accumulated at the bottom of the hole and eliminates the cooling blind zone, thereby avoiding tool wear caused by chip accumulation and compression, and improving the stability of deep hole machining and tool life. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0018] In the attached diagram: Figure 1 This is an overall schematic diagram of a rotor magnetic yoke assembly drilling and tapping integrated device according to this application; Figure 2 for Figure 1 A partial structural diagram; Figure 3 for Figure 2 A partial structural diagram; Figure 4 for Figure 1 A partial structural diagram; Figure 5 for Figure 1 A partial structural diagram; Figure 6 for Figure 5 Enlarged view of point A; Figure 7 for Figure 5 A partial structural diagram; Figure 8 for Figure 7 Enlarged view of point B; Figure 9 for Figure 7 A partial structural diagram; Figure 10 for Figure 9 Enlarged view of point C; Figure label: 1. Processing table; 11. Enclosure cover; 2. Tapping mechanism; 21. Linear movement module one; 22. Sliding seat one; 23. Drive box one; 24. Tapping head; 3. Drilling mechanism; 31. Linear movement module two; 32. Sliding seat two; 33. Drill bit; 34. Drive motor; 35. Gearbox one; 4. Fixing mechanism; 41. Linear movement module three; 42. Sliding seat three; 45. Telescopic cover; 46. Drive box two; 47. Pulley assembly; 48. Gearbox two; 49. Four-jaw chuck; 5. Covering mechanism; 51. Fixed cylinder; 52. Connecting spring; 53. Movable cylinder 54. Shielding ring; 55. Nylon brush ring; 56. Contact rod; 6. Spraying assembly; 61. Mounting box; 601. Opening slot; 62. Connecting rod; 63. First cam; 64. Second cam; 65. Gear; 66. Sealing box; 661. Connecting end; 662. Support frame; 663. Liquid storage pipe; 67. Contact rod; 68. Pipe clamp; 69. Rack; 610. Fixing sleeve; 611. Movable rod; 612. Return spring; 613. Sealing plug; 7. Flushing mechanism; 71. Connecting hose; 72. Support frame; 73. Universal bamboo joint tube; 74. Liquid inlet port. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Reference Figures 1 to 10 As shown, the basic support and environmental protection of this invention are constituted by the machining table 1 and its enclosure structure. The machining table 1 serves as the rigid base of the entire machine, and an enclosure 11 is fixedly installed around it to create a closed wet machining environment, effectively preventing cutting fluid and metal filings from leaking and contaminating the workshop floor. The fixing mechanism 4, drilling mechanism 3, and tapping mechanism 2 are all ergonomically optimized and rationally arranged on the operating plane of the machining table 1.

[0022] To achieve stable clamping of rotor yoke assemblies of different specifications and flexible switching between multiple workstations, the fixing mechanism 4 adopts a composite motion structure of "linear displacement + rotary indexing". Specifically, the fixing mechanism 4 includes a linear motion module 3 41 arranged along the longitudinal direction (Y-axis direction) of the machining table 1, which serves as the feed axis for workpiece transport. The linear motion module 3 41 is a common existing technology in the field of machining (e.g., a standard slide table module in which a ball screw driven by a servo motor moves the slide seat). The slide seat 3 42 integrates clamping and driving components, including a drive box 2 46, a gear box 2 48, and a four-jaw chuck 49.

[0023] In terms of the rotary indexing drive logic, this invention employs a precise power transmission chain: the second drive box 46 (which integrates a servo motor) serves as the power source, and its output end is first connected to the pulley assembly 47. Through the flexible transmission of the pulley assembly 47, the power is smoothly transmitted to the input shaft of the second gearbox 48. The second gearbox 48 acts as a speed reducer and torque amplifier, and its output shaft is rigidly connected to the four-jaw chuck 49, thereby driving the four-jaw chuck 49 to drive the rotor magnetic yoke assembly to perform high-precision circumferential indexing rotation, thus accurately adjusting the drilling angle.

[0024] Furthermore, considering the machining environment is filled with cutting fluid and metal shavings, a stainless steel telescopic cover 45 (such as a bellows cover or a steel plate cover) is specially installed on the outside of the linear motion module 3 41. This telescopic cover 45 extends and retracts synchronously with the sliding seat 3 42, always covering the movement stroke of the module, effectively preventing iron filings and dirty fluids from entering the internal lead screw and guide rail, ensuring the long-term travel accuracy and service life of the moving module.

[0025] In order to achieve efficient composite processing of drilling and tapping, the drilling mechanism 3 and the tapping mechanism 2 are distributed at right angles on both sides of the workstation.

[0026] Specifically, the tapping mechanism 2 is arranged vertically, and its core displacement component is a vertically mounted linear motion module 21. It should be noted that the linear motion modules in this embodiment (including the linear motion module 21 described herein, the linear motion module 31 described below, and the linear motion module 41 described above) all have similar structures and are all existing technologies commonly used in the field of machining (e.g., a standard slide module where a ball screw is driven by a servo motor to move a slider). Therefore, this specification will not elaborate on their specific internal transmission structures. The sliding seat 22 of the linear motion module 21 carries the drive box 23 and the tapping head 24, suitable for driving the tap to feed vertically to complete the vertical thread machining.

[0027] The drilling mechanism 3, which works in conjunction with the drilling mechanism, is arranged laterally and includes a horizontally mounted linear motion module 31 (also existing technology). A drive motor 34 and a gearbox 35 are securely mounted on its sliding seat 32. The output end of the drive motor 34 is connected to the gearbox 35, which drives the drill bit 33 mounted at its front end to rotate at high speed. This drilling mechanism 3 is suitable for driving the drill bit 33 to feed horizontally to complete lateral end face drilling. Thanks to this layout, the rotor yoke assembly only needs to be clamped and positioned once by the fixing mechanism 4, without the need for disassembly or manual flipping. Side drilling and vertical tapping operations can be continuously completed by switching workstations.

[0028] To effectively address the technical challenge of ineffective chip removal using conventional cooling methods when machining deep blind holes in rotor yokes, this invention innovatively designs a mechanically linked spraying component 6, such as... Figures 7-10 As shown, the spraying assembly 6 is configured to directly utilize the feed and retraction motion of the power head as a trigger source to generate a pulse jet. In its specific structural layout, the spraying assembly 6 includes relatively stationary components and moving components, which are respectively installed on the fixed and moving sides of the equipment to form relative motion. Regarding the relatively stationary components: four vertically arranged support frames 662 are fixedly installed on the gearbox 48 of the fixed mechanism 4. A sealing box 66 is fixed between the four support frames 662, and a mounting box 61 is sleeved onto one end of the sealing box 66, thereby ensuring that the mounting box 61 remains stationary relative to the machining station.

[0029] Regarding the setting of the follower component: A pipe clamp 68 is sleeved on the moving end of the power head of the tapping mechanism 2, and a vertically extending rack 69 is connected to the pipe clamp 68; Regarding the transmission connection: In the internal space of the mounting box 61, a horizontally set rotating shaft (not shown in the figure) is rotatably supported by two sets of connecting rods 62 bearings, and a gear 65 that is always meshed with the rack 69 is fixed on the rotating shaft.

[0030] When the power head of the tapping mechanism 2 performs a linear feed or retraction motion, the rack 69 is vertically displaced relative to the stationary mounting box 61, driving the gear 65 and the rotating shaft to rotate synchronously. Through this transmission mechanism, the linear motion of the power head is converted into the rotational motion of the rotating shaft, thereby providing mechanical power input for the subsequent cam control mechanism.

[0031] As a preferred flow path control scheme, the present invention utilizes a first cam 63 to control the high-pressure on / off state of the valve body. (Continuing to refer to...) Figures 7 to 10 As shown, a first cam 63 is fixed on the aforementioned rotating shaft. In order to guide the fluid to the processing area, a flushing mechanism 7 is provided at the bottom of the sealing box 66; the flushing mechanism 7 mainly consists of a connecting hose 71 and a universal bamboo tube 73, wherein one end of the connecting hose 71 is connected to the liquid inlet port 74 that passes through and is fixed at the bottom of the sealing box 66, and the other end is connected to the universal bamboo tube 73, and the universal bamboo tube 73 is positioned to the side of the processing point by a support frame 72.

[0032] In terms of specific control within the valve body, a vertically arranged liquid storage pipe 663 is fixed inside the sealing box 66. This liquid storage pipe 663 is connected to an external cutting fluid supply pump via a top connecting end 661. The outlet path of the liquid storage pipe 663 is normally open and conductive. Specifically, a horizontally arranged movable rod 611 is guided and supported inside the sealing box 66 by a fixed sleeve 610. A sealing plug 613 (which has a throttling cone function) is connected to one end of the movable rod 611. Under the action of the return spring 612, the sealing plug 613 is kept away from the neck of the liquid inlet port 74, allowing the cutting fluid to flow out through the flushing mechanism 7 at a normal flow rate and in a large flow rate, continuously cooling the rotor yoke.

[0033] A touch rod 67 is horizontally slidably mounted on the mounting box 61, with one end abutting the contour surface of the first cam 63 and the other end abutting the side of the step (not shown in the figure) integrally fixed to the end of the movable rod 611.

[0034] When the drilling or tapping power head performs the retraction action, the rack 69 drives the first cam 63 to rotate to its highest point (the protruding part), pushing the contact rod 67 and the movable rod 611 to overcome the resistance of the return spring 612 and move. At this time, the sealing plug 613 is pushed into the neck of the liquid outlet of the liquid storage pipe 663, instantly "closing" the originally wide flow path to only a narrow gap. According to the principles of fluid mechanics, the sharp reduction in the flow cross-sectional area will cause the fluid pressure potential energy to be converted into kinetic energy, causing the flow rate of the cutting fluid flowing through the universal bamboo tube 73 to surge, forming a high-pressure, high-speed pulse jet. This jet directly hits the inside of the deep blind hole, using the powerful impact kinetic energy to force out the accumulated chips. When the retraction ends (or the feed begins), the first cam 63 returns to its original position, and the flow path returns to the normal high-flow cooling state.

[0035] To prevent cutting fluid splashing caused by high-pressure pulses, shielding mechanism 5 is used to dynamically wrap and protect the machining area. (Continue to refer to...) Figures 7 to 10 As shown, in terms of specific structural composition, the shielding mechanism 5 is installed around the outer periphery of the rotor yoke assembly processing station. It mainly consists of a fixed cylinder 51 and a coaxially sleeved movable cylinder 53, with a connecting spring 52 between them, giving the movable cylinder 53 elastic potential energy to extend axially. A shielding ring 54 is fixedly installed at the front end of the movable cylinder 53, and a nylon brush ring 55 is embedded on the inner circumference of the shielding ring 54. The inner diameter of the nylon brush ring 55 is slightly smaller than or equal to the outer diameter of the rotor yoke to ensure sealing during contact.

[0036] The extension and retraction of the blocking mechanism 5 is also driven by the aforementioned cam transmission mechanism to achieve synchronization with the processing cycle. Specifically, a second cam 64 is also fixed on the aforementioned rotating shaft. A vertically extending contact rod 56 is fixed on the blocking ring 54 (or movable cylinder 53). To reduce mechanical friction, a rotating wheel (not shown in the figure) is installed at the top of the contact rod 56, and the end of the contact rod 56 extends into the mounting box 61 through the rotating wheel, forming a rolling abutment engagement with the contour surface of the second cam 64.

[0037] During operation, when the drilling or tapping power head feeds, the rotating shaft rotates, causing the second cam 64 to rotate. Through changes in the cam profile radius, the second cam 64 pushes the rotating wheel on the contact rod 56, driving the movable cylinder 53 to overcome the resistance of the connecting spring 52 and extend forward, causing the front shielding ring 54 and the inner nylon brush ring 55 to tightly adhere to the rotor yoke surface. This not only forms a closed anti-splash cavity, but also, during rotor indexing, the nylon brush ring 55 acts like a "rain wiper," effectively scraping away chips and accumulated liquid from the workpiece surface.

[0038] To guide the linear motion of the power head into the mounting box 61, a vertical opening slot 601 is provided on the side wall of the mounting box 61. A rack 69 is vertically movably disposed within the internal space of the mounting box 61 and maintains engagement with the aforementioned gear 65. To achieve internal and external linkage, a slider (not shown in the figure) is fixedly provided on the side of the rack 69. This slider adapts to pass through the opening slot 601 and extends to the outside of the mounting box 61, where it is securely connected to a pipe clamp 68 fixed to the drilling or tapping power head. Thus, the up-and-down movement of the power head can stably drive the internal rack 69 to displacement via the opening slot 601.

[0039] To protect the transmission components inside the mounting box 61, a vertical extension box (not shown in the figure) is connected to the bottom of the mounting box 61. The internal space of this extension box is sufficient to accommodate the downward stroke of the rack 69. When the rack 69 moves downward with the power head, its lower end directly enters the closed extension box, thereby preventing the rack 69 from extending out of the mounting box 61 and being exposed to the cutting fluid splash area, effectively preventing transmission jamming caused by metal chips adhering to the tooth surface.

[0040] To accommodate the movement of the contact rod 56 in the shielding mechanism 5, a displacement groove (not shown in the figure) is provided on the bottom wall of the mounting box 61. To prevent cutting fluid from flowing back into the mounting box 61 from the displacement groove, cover plates (not shown in the figure) are fixed on both sides of the contact rod 56. The length of the cover plate is specially designed to ensure that the cover plate always covers the opening of the displacement groove throughout the entire displacement range of the contact rod 56, forming a dynamic sealing structure.

[0041] Working Principle: When the equipment is in operation, the rotor yoke assembly to be processed is first clamped onto the four-jaw chuck 49 of the fixed mechanism 4. The fixed mechanism 4 uses the linear motion module 3 41 to transport the workpiece along the Y-axis to the processing area, and through the drive box 2 46 in conjunction with the pulley assembly 47 and gearbox 2 48, controls the workpiece to rotate circumferentially to align with the hole to be processed. Subsequently, the orthogonally distributed drilling mechanism 3 and tapping mechanism 2 work together: the drilling mechanism 3 uses the linear motion module 2 31 to drive the drill bit 33 to feed horizontally, completing lateral drilling; the tapping mechanism 2 uses the linear motion module 1 21 to drive the tapping head 24 to feed vertically, completing thread processing. Thanks to this layout, the workpiece only needs to be clamped once to continuously complete multi-angle, multi-process composite processing through the displacement and indexing of the fixed mechanism 4, and the processing is always carried out in a closed, wet environment constructed by the enclosure 11, ensuring workshop cleanliness.

[0042] In deep hole machining, to solve the chip removal problem, the spraying component 6 utilizes a mechanical linkage mechanism to control the flow path. When the power head of the tapping mechanism 2 moves linearly for feed or retraction, the clamp 68 fixed on it drives the rack 69 to move synchronously. The rack 69, through meshing with the gear 65 inside the mounting box 61, efficiently converts the linear motion of the power head into the rotational motion of the internal rotating shaft and the first cam 63. During normal and normal cutting feed stages, the flow path is open and conductive, and the cutting fluid flows out through the universal bamboo tube 73 at a normal flow rate and large flow rate, providing overall cooling. When the power head performs a retraction action, the rack drives the first cam 63 to rotate to its highest point, pushing the contact rod 67 and the movable rod 611 to move, pushing the sealing plug 613 into the neck of the liquid storage pipe 663. At this time, the flow cross-sectional area decreases, and the fluid pressure potential energy is instantly converted into kinetic energy, forming a high-pressure, high-speed pulse jet that directly hits the bottom of the hole, forcibly removing sticky chips, thus realizing the automated process switching of feed cooling and retraction chip removal.

[0043] Meanwhile, the action of the shielding mechanism 5 is strictly synchronized with the aforementioned machining cycle. During the rotation of the rotating shaft driven by the power head feed, the second cam 64, fixed on the shaft, rotates synchronously, pushing the contact rod 56 to drive the movable cylinder 53 to extend forward against spring resistance. This allows the front shielding ring 54 and the nylon brush ring 55 to fit tightly against the rotor yoke surface, forming a dynamic anti-splash cavity that effectively blocks the splashing of cutting fluid generated by the pulses. Furthermore, during rotor indexing rotation, the nylon brush ring 55 can scrape away accumulated liquid and debris from the workpiece surface. In addition, the mounting box 61 itself has a comprehensive protective design: the rack 69 enters the bottom extension box when descending, avoiding exposure to dirty liquid areas; the displacement groove of the contact rod 56 is always covered by a cover plate, preventing liquid backflow. This multi-layered protective design ensures the stable operation of the transmission components in the cutting environment.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A drilling and tapping integrated device for a rotor magnetic yoke assembly, characterized in that: The machine includes a machining table (1) and a fixing mechanism (4), a drilling mechanism (3) and a tapping mechanism (2) mounted thereon; characterized in that it further includes a spraying assembly (6), which is equipped with a flow path control valve body and a cam transmission mechanism, wherein the cam transmission mechanism is mechanically connected to the feed drive end of the drilling mechanism (3) or the tapping mechanism (2); when machining a deep blind hole in a rotor yoke, the spraying assembly (6) uses the cam transmission mechanism to convert the linear retraction motion of the tool into the flow path adjustment operation of the valve body, so that the cutting fluid forms a pulsed high-pressure jet, and is sprayed into the deep blind hole through the flushing mechanism (7) to overcome the chip removal resistance in the hole and eliminate the cooling blind zone.

2. The integrated drilling and tapping equipment for a rotor magnetic yoke assembly according to claim 1, characterized in that: The spraying assembly (6) includes a mounting box (61) and a sealing box (66); the cam transmission mechanism includes a rotating shaft rotatably mounted on the mounting box (61), a gear (65) fixed on the rotating shaft, and a first cam (63); it also includes a pipe clamp (68) and a rack (69) fixed on the moving end of the drilling mechanism (3) or the tapping mechanism (2), the rack (69) meshing with the gear (65); it is suitable for driving the gear (65) and the first cam (63) to rotate synchronously through the rack (69) when the power head makes a linear up-and-down displacement.

3. The integrated drilling and tapping equipment for a rotor magnetic yoke assembly according to claim 2, characterized in that: The sealing box (66) is provided with a liquid storage pipe (663), and the liquid outlet path of the liquid storage pipe (663) is normally open. Inside the sealing box (66), a horizontally arranged movable rod (611) is guided and supported by a fixed sleeve (610). One end of the movable rod (611) is connected to a sealing plug (613), and a return spring (612) is sleeved on the movable rod (611) to keep the sealing plug (613) in the open position. A touch rod (67) is slidably provided on the mounting box (61). One end of the touch rod (67) abuts against the contour surface of the first cam (63), and the other end abuts against the movable rod (611). It is suitable that when the first cam (63) rotates to a specific angle, the touch rod (67) pushes the movable rod (611) to overcome the resistance displacement of the return spring (612) and drives the sealing plug (613) to move towards the constriction of the liquid outlet of the liquid storage pipe (663) to reduce the flow cross-sectional area, thereby forming a high-pressure jet.

4. The integrated drilling and tapping equipment for a rotor magnetic yoke assembly according to claim 3, characterized in that: The flushing mechanism (7) includes a connecting hose (71) and a universal bamboo tube (73); the bottom of the sealing box (66) is provided with a liquid inlet port (74), the connecting hose (71) connects the liquid inlet port (74) and the universal bamboo tube (73), and the universal bamboo tube (73) is positioned on the side of the processing area by a support frame (72).

5. The integrated drilling and tapping equipment for a rotor magnetic yoke assembly according to claim 2, characterized in that: It also includes a shielding mechanism (5), which is adapted to cover the outer periphery of the processing area of ​​the rotor yoke assembly; the shielding mechanism (5) includes a fixed cylinder (51) and a movable cylinder (53) slidably connected to the fixed cylinder (51), a connecting spring (52) is connected between one end of the inner wall of the fixed cylinder (51) and one end of the movable cylinder (53), so that the movable cylinder (53) has elastic potential energy to extend along the axial direction; the movable cylinder (53) forms a guide structure that reciprocates and extends along the axial direction relative to the fixed cylinder (51), and the front end of the movable cylinder (53) is provided with a shielding ring (54), the end face of the shielding ring (54) is adapted to tightly fit the outer surface of the rotor yoke assembly.

6. The integrated drilling and tapping equipment for a rotor magnetic yoke assembly according to claim 5, characterized in that: A second cam (64) is also fixed on the rotating shaft of the cam transmission mechanism; the mounting box (61) is fixedly connected to one side of the sealing box (66), and the rotating shaft is rotatably supported in the mounting box (61) through the connecting rod (62); a vertically extending contact rod (56) is fixedly provided on the shielding ring (54), and the end of the contact rod (56) is provided with a rotating wheel, which is adapted to extend into the mounting box (61) through the rotating wheel to form a rolling abutment fit with the contour surface of the second cam (64); the bottom wall of the mounting box (61) is provided with a space for the contact rod (56) to be inserted. The movable displacement groove is provided with cover plates fixed on both sides of the contact rod (56). The cover plates are adapted to always cover the displacement groove when the contact rod (56) is displaced, so as to prevent the cutting fluid from entering the mounting box (61). The side wall of the mounting box (61) is provided with an opening groove (601). The rack (69) is slidably inserted through the opening groove (601) by a slider and connected to the tube clamp (68). The bottom of the mounting box (61) is connected to an extension box, which is adapted to accommodate the vertical movement stroke of the rack (69) and prevent the cutting fluid from splashing onto the surface of the rack (69).

7. The integrated drilling and tapping equipment for a rotor magnetic yoke assembly according to claim 6, characterized in that: The inner side of the shielding ring (54) is provided with a nylon brush ring (55), which is suitable for scraping and blocking the splashing of cutting fluid and chips when the shielding ring (54) moves relative to the rotor yoke assembly.

8. The integrated drilling and tapping equipment for a rotor magnetic yoke assembly according to claim 1, characterized in that: The tapping mechanism (2) includes a vertically arranged linear movement module 1 (21) and a sliding seat 1 (22). The sliding seat 1 (22) is provided with a tapping head (24) and a drive box 1 (23). The drilling mechanism (3) includes a horizontally arranged linear movement module 2 (31) and a sliding seat 2 (32). The sliding seat 2 (32) is provided with a drill bit (33), a gear box 1 (35) and a drive motor (34). The drive motor (34) drives the drill bit (33) through the gear box 1 (35). The drilling mechanism (3) and the tapping mechanism (2) are distributed at right angles.

9. The integrated drilling and tapping equipment for a rotor magnetic yoke assembly according to claim 1, characterized in that: The fixing mechanism (4) includes a linear motion module three (41) and a sliding seat three (42). The sliding seat three (42) is provided with a drive box two (46), a gear box two (48) and a four-jaw chuck (49) for clamping the rotor magnetic yoke assembly. The four-jaw chuck (49) is connected to the output end of the gear box two (48). The linear motion module three (41) is provided with a protective telescopic cover (45) on its outer side.

10. A rotor magnetic yoke assembly drilling and tapping integrated device according to claim 6, characterized in that: The processing table (1) is surrounded by a protective cover (11), and the top of the sealing box (66) is provided with a connecting end (661), which is suitable for connecting an external cutting fluid supply pump.

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