High-precision ball screw nut grinding device

Abstract

This invention discloses a high-precision ball screw nut grinding device, belonging to the field of nut grinding. It includes a base with two symmetrically arranged slide rails on one side of the top of the base. A sliding table is slidably connected to the outer surface of the two slide rails, and a second drive motor is fixedly connected to one side of the sliding table. Compressed air can be injected into the compressed air delivery pipe of a vortex tube cold air generator. The gas enters the interior of the vortex tube cold air generator, forming two airflows: a hot airflow and a cold airflow. The cold airflow enters the interior of the first rotary joint, and then through the connecting cover into the interior of the nut. A large amount of cold air entering the interior of the nut carries away the grinding heat, thus completely eliminating the use of cutting fluid. There is no waste liquid discharge or environmental pollution. It avoids coolant residue inside the ball screw nut thread raceway, eliminating the need for subsequent cleaning and drying. Assembly precision is higher, and internal thread grinding is no longer limited by problems such as difficulty in liquid drainage and residual corrosion.

Description

Technical Field

[0001] This invention relates to the field of nut grinding, and more specifically, to a high-precision ball screw nut grinding device. Background Technology

[0002] A ball screw nut, also known as a ball screw nut, is an ideal product for converting rotary motion into linear motion, or vice versa. Its core working principle is to achieve efficient transmission through the rolling of balls between the screw and the nut. The internal thread (raceway) of the nut in a ball screw assembly typically requires grinding. The dimensions and profile accuracy of the thread depend on the dimensions, profile, and accuracy of the grinding wheel's forming surface. Ensuring the accuracy of the grinding wheel's forming and dressing is the primary prerequisite for achieving precision CNC grinding of the internal thread.

[0003] However, during the operation of the grinding wheel, an airflow layer of a certain thickness is formed around it, which hinders the entry of external coolant into the grinding zone, thus preventing effective cooling of the workpiece. Furthermore, the coolant on the grinding surface will vaporize under the high temperature of the grinding surface, forming a gas barrier heat insulation film between the grinding surface and the coolant, also known as film boiling, which blocks heat dissipation from the grinding surface to the liquid, causing damage to the workpiece surface.

[0004] To solve the above technical problems, Chinese Patent Application No. CN 119159175 A discloses a high-precision ball screw matching nut grinding device. Through the connection of the upper buffer connecting pipe and the lower buffer connecting pipe, the grinding coolant is directly sprayed out from the inside of the grinding wheel for cooling, which effectively avoids the influence of the airflow layer generated around the grinding wheel due to rotation, significantly reduces the grinding temperature, and reduces thermal damage to the internal threads of long nuts. However, the thread raceway is narrow and complex, and cutting fluid and impurities are easily retained at the bottom of the thread. Subsequent cleaning, drying and rust prevention processes must be added, which is costly and inefficient. At the same time, there are environmental pollution and safety issues: the cutting fluid is easy to evaporate and generate oil mist, which pollutes the workshop environment; after a period of use, it deteriorates and smells bad, generating waste liquid, which is hazardous waste and has high treatment costs. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide a high-precision ball screw nut grinding device.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A high-precision ball screw nut grinding device includes a base. Two slide rails are symmetrically arranged on one side of the top of the base. A sliding table is slidably connected to the outer surface of the two slide rails. A second drive motor is fixedly connected to one side of the sliding table. A third gear is fixedly connected to the output end of the second drive motor. A grinding rod is rotatably connected inside the sliding table. A second gear is fixedly connected to the outer surface of the grinding rod. A grinding wheel is fixedly connected to the front end of the outer surface of the grinding rod. A servo motor is fixedly connected to one end of the base. A threaded rod is fixedly connected to the output end of the servo motor. A fixing plate is fixedly connected to the other side of the top of the base. A circular frame is rotatably connected inside the fixing plate. Three clamping push rods are evenly fixedly connected inside the circular frame. An arc-shaped clamping plate is fixedly connected to the output end of the clamping push rods. A cooling component for cooling the inside of the nut is provided on one side of the fixing plate near the top.

[0008] The cooling assembly includes a first hydraulic push rod symmetrically fixed to one side of a fixed plate. The output end of the first hydraulic push rod is fixedly connected to a mounting plate. A connecting cover is fixedly connected to one side of the two mounting plates that are close to each other. A first rotary joint is rotatably connected to one side of the connecting cover. A vortex tube cold air generator is connected to the other end of the first rotary joint. A sealing ring is fixedly connected to the inner surface of the connecting cover.

[0009] Furthermore, a first drive motor is fixedly connected to the middle of the side of the fixed plate near the first hydraulic push rod. A first gear is fixedly connected to the output end of the first drive motor. An annular rack is fixedly connected to the outer surface of the circular frame. The first gear and the annular rack mesh with each other. A rubber pad is provided on one side of the arc-shaped clamp. The cold air output end of the vortex tube cold air generator is connected to the first rotary joint. A compressed air delivery pipe is provided at the air inlet end of the vortex tube cold air generator. A heat exhaust hose is connected to the hot air output end of the vortex tube cold air generator. The sealing ring is preferably a multi-step or conical sealing ring made of high-elasticity silicone material.

[0010] Furthermore, the grinding rod is provided with a directional spray assembly for cooling the grinding area of ​​the grinding wheel. The directional spray assembly includes a second rotary joint that rotates at one end of the grinding rod and two air chambers that are opened at one end inside the grinding rod. A connecting cavity is opened between the two air chambers. Multiple inclined air nozzles are evenly opened inside the two air chambers. A microchannel is opened on one side inside one of the air chambers.

[0011] Furthermore, two air chambers are located on either side of the grinding wheel, and the air jet nozzles spray air towards the grinding contact area of ​​the grinding wheel. The connecting chamber is funnel-shaped.

[0012] Furthermore, the third gear and the second gear mesh with each other, the microchannel and the second rotary joint are internally interconnected, and the other end of the second rotary joint is connected to an external air intake hose.

[0013] Furthermore, a servo motor is fixedly connected to one end of the base, and a threaded rod is fixedly connected to the output end of the servo motor. A threaded hole is provided at the bottom of the sliding table, and the threaded rod passes through the threaded hole. The threaded rod is connected to the sliding table through the internal thread of the threaded hole.

[0014] Furthermore, a wear debris recovery assembly is provided at the middle of the front and rear ends of the base. The wear debris recovery assembly includes a side plate fixed at the middle of the front and rear ends of the base. A support slide rod is slidably connected inside the side plate. A collection cover is fixedly connected to the side of the two support slide rods that are close to each other. An air inlet is provided on one side of the collection cover. A groove is provided in the middle of the side of the two collection covers that are close to each other. An internally threaded plate is fixedly connected to the bottom of the other side of the collection cover. A bidirectional threaded rod is connected to the internal thread of the internally threaded plate. A telescopic hose is fixedly connected to the bottom of the collection cover. A T-connector is fixedly connected to one end of the two telescopic hoses. A mounting frame is fixedly connected to the bottom of the T-connector. A connecting pipe is fixedly connected to the bottom of the mounting frame. A negative pressure air pump is connected to the other end of the connecting pipe.

[0015] Furthermore, one side of the bidirectional threaded rod passes through one of the side plates, and the bidirectional threaded rod is connected to the side plates through bearings. A U-shaped plate is inserted inside the mounting frame, and three electromagnet plates are evenly arranged on both sides inside the U-shaped plate. The electromagnet plates on both sides are arranged alternately. A connection port is opened at the bottom inside the U-shaped plate, and the connection port coincides with and connects to the inlet of the connecting pipe. A protective net is installed inside the air inlet.

[0016] Furthermore, the mounting frame is provided with disassembly components on both sides. The disassembly components include a shielding plate inserted into the front side of the mounting frame and a fixing shaft fixed to both sides of the mounting frame. The shielding plate is fixedly connected to the two sides with a locking plate, and the locking plate has a locking groove inside.

[0017] Furthermore, the card plate is fastened to the outer surface of the fixed shaft through a card slot, and a sealing gasket is provided on one side of the shielding plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This solution incorporates a cooling component, injecting compressed air into the compressed air delivery pipe of the vortex tube cold air generator. The gas enters the generator, creating a hot air stream and a cold air stream. The cold air stream enters the first rotary joint and then passes through the connecting cover into the nut. The large amount of cold air entering the nut carries away the grinding heat, effectively replacing traditional cutting fluid and achieving true dry grinding. On one hand, this solution eliminates waste liquid discharge and workshop environmental pollution; on the other hand, since no liquid enters the narrow and complex thread raceway, it eliminates the risk of rust caused by cutting fluid residue. After processing, the tedious cleaning and drying processes are eliminated.

[0019] 2. This solution uses a directional jet assembly. The airflow enters the microchannel through the second rotary joint, then enters the two air chambers, and is ejected from the jet nozzle. The airflow is aimed at the grinding contact area and directly removes the instantaneous high temperature of the core grinding point. The high-speed jet micro-airflow can effectively blow away the metal particles adhering to the surface of the grinding wheel, prevent the grinding wheel from sticking to the chips, prevent the thread surface from burning, and avoid thermal deformation that leads to tooth profile distortion.

[0020] 3. This solution incorporates a slag recovery component. Under the suction of the collection hood, slag enters the hood, and the airflow carries the slag into the mounting frame. Due to the staggered arrangement of the electromagnet plates on both sides, the magnetic force of the electromagnet plates attracts the slag in the airflow, effectively removing slag and collecting the slag. This prevents slag from embedding into the thread root, prevents dust leakage, eliminates dust pollution in the workshop, and allows for unified recycling and reuse of the slag. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the cooling component structure of the present invention. Figure One ; Figure 3 This is a schematic diagram of the cooling component structure of the present invention. Figure Two ; Figure 4 This is a schematic diagram of the cooling component structure of the present invention. Figure Three ; Figure 5 This is a partial structural diagram of the present invention; Figure 6 This is a schematic diagram of the directional spraying component structure of the present invention; Figure 7 This is a schematic diagram of the wear debris recovery component of the present invention. Figure One ; Figure 8 This is a schematic diagram of the wear debris recovery component of the present invention. Figure Two ; Figure 9 This is a schematic diagram of the wear debris recovery component of the present invention.Figure Three ; Figure 10 This is a schematic diagram of the disassembly component structure of the present invention.

[0022] Explanation of the labels in the diagram: 1. Base; 2. Slide rail; 3. Servo motor; 4. Threaded rod; 5. Sliding table; 6. Fixing plate; 7. Cooling assembly; 71. First hydraulic push rod; 72. Mounting plate; 73. Connecting cover; 74. First rotary joint; 75. Vortex tube cold air generator; 76. Sealing ring; 8. Grinding debris recovery assembly; 81. Side plate; 82. Support slide bar; 83. Two-way threaded rod; 84. Collection cover; 85. Groove; 86. Air inlet; 87. Mounting frame; 88. Disassembly of components; 881. Fixing shaft; 882. Shielding plate; 883. Clamping plate; 884. Clamping slot; 89. Tee pipe; 810. Connecting pipe; 811. Negative pressure air pump; 812. Telescopic flexible hose; 813. Electromagnetic plate; 814. U-shaped plate; 815. Connecting port; 816. Internal thread plate; 9. Directional injection assembly; 91. Second rotary joint; 92. Microchannel; 93. Air chamber; 94. Air nozzle; 95. Connecting chamber; 10. Arc-shaped clamping plate; 11. First gear; 12. First drive motor; 13. Ring rack; 14. Second drive motor; 15. Third gear; 16. Second gear; 17. Grinding rod; 18. Grinding wheel; 19. Circular frame; 20. Clamping push rod. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1 to 10A high-precision ball screw nut grinding device includes a base 1. Two slide rails 2 are symmetrically opened on one side of the top of the base 1. A sliding table 5 is slidably connected to the outer surface of the two slide rails 2. A second drive motor 14 is fixedly connected to one side of the sliding table 5. A third gear 15 is fixedly connected to the output end of the second drive motor 14. A grinding rod 17 is rotatably connected inside the sliding table 5. A second gear 16 is fixedly connected to the outer surface of the grinding rod 17. A grinding wheel 18 is fixedly connected to the front end of the outer surface of the grinding rod 17. A servo motor 3 is fixedly connected to one end of the base 1. A threaded rod 4 is fixedly connected to the output end of the servo motor 3. A fixing plate 6 is fixedly connected to the other side of the top of the base 1. A circular frame 19 is rotatably connected inside the fixing plate 6. Three clamping push rods 20 are evenly fixedly connected inside the circular frame 19. An arc-shaped clamping plate 10 is fixedly connected to the output end of the clamping push rods 20. A cooling component 7 for cooling the inside of the nut is provided on one side of the fixing plate 6 near the top.

[0025] like Figures 2-4 As shown, the cooling assembly 7 includes a first hydraulic push rod 71 symmetrically fixed on one side of the fixed plate 6. The output end of the first hydraulic push rod 71 is fixedly connected to a mounting plate 72. A connecting cover 73 is fixedly connected to one side of the two mounting plates 72 that are close to each other. A first rotary joint 74 is rotatably connected to one side of the connecting cover 73. The other end of the first rotary joint 74 is connected to a vortex tube cold air generator 75. A sealing ring 76 is fixedly connected to the inner surface of the connecting cover 73.

[0026] A first drive motor 12 is fixedly connected to the middle of the side of the fixed plate 6 near the first hydraulic push rod 71. A first gear 11 is fixedly connected to the output end of the first drive motor 12. A ring rack 13 is fixedly connected to the outer surface of the circular frame 19. The first gear 11 and the ring rack 13 mesh with each other. A rubber pad is provided on one side of the arc-shaped clamping plate 10. The cold air output end of the vortex tube cold air generator 75 is connected to the first rotary joint 74. A compressed air delivery pipe is provided at the air inlet end of the vortex tube cold air generator 75. A heat exhaust hose is connected to the hot air output end of the vortex tube cold air generator 75. The sealing ring 76 is preferably a multi-step or conical sealing ring made of high elastic silicone material.

[0027] When grinding the internal thread of the lead screw nut, the lead screw nut is placed between three sets of arc-shaped clamping plates 10. Simultaneously, three clamping push rods 20 are activated to move the arc-shaped clamping plates 10 closer to the nut, clamping and positioning it to prevent axial deflection during rotation. The servo motor 3 is activated to rotate the threaded rod 4, which in turn drives the sliding table 5 to slide on the slide rail 2, causing the grinding wheel 18 to move inwards towards the lead screw nut. Simultaneously, the first hydraulic push rod 71 is activated, moving the connecting cover 73 outwards towards the nut via the mounting plate 72, until the connecting cover 73 is fitted over the outside of the lead screw nut. The external thrust sealing ring 76 deforms, effectively adapting to nuts of different outer diameters and sealing the gap between the connecting cover 73 and the nut, ensuring a tight connection between the connecting cover 73 and the nut's interior. At this time, the other end of the nut is in an open state and there is an exhaust gap between it and the grinding rod 17. The cold air enters the nut from the connecting cover 73, flows through the grinding area of ​​the grinding wheel 18, and carries the grinding heat and metal chips out at high speed from the exhaust gap and blows directly towards the collection cover 84 at the front end. When the grinding wheel 18 reaches the designated position, the second drive motor 14 is started to drive the third gear 15 to rotate. The third gear 15 drives the grinding rod 17 and the grinding wheel 18 to rotate at high speed through the second gear 16. At the same time, the first drive motor 12 drives the first gear 11 to rotate. The first gear 11 drives the circular frame 19 and the nut to rotate synchronously through the ring rack 13. The servo motor 3 and the thread rod 4 drive the sliding table 5 to move forward at a uniform speed. The grinding wheel 18 performs thread grinding on the inside of the nut. During grinding, compressed air is injected into the compressed air delivery pipe of the vortex tube cold air generator 75. After entering the interior of the vortex tube cold air generator 75, the compressed air forms two airflows, one hot and one cold. The hot air output end of the vortex tube cold air generator 75 is connected to a heat exhaust hose, which directly leads the generated hot airflow to the workshop exhaust duct or the outside of the machine tool for dissipation, preventing the hot air from causing thermal deformation of the machine tool components. The cold airflow enters the interior of the first rotary joint 74, and then enters the interior of the nut through the connecting cover 73. A large amount of cold air enters the interior of the nut and carries away the grinding heat, thereby completely eliminating the use of cutting fluid. There is no waste liquid discharge and no environmental pollution. It avoids coolant residue inside the thread raceway of the lead screw nut, eliminating the need for subsequent cleaning and drying. The assembly accuracy is higher, and the internal thread grinding is no longer limited by the problems of difficult liquid drainage and residual rust.

[0028] like Figures 5-6 As shown, the cold grinding rod 17 is provided with a directional jet assembly 9 for cooling the grinding area of ​​the grinding wheel 18. The directional jet assembly 9 includes a second rotary joint 91 that rotates at one end of the grinding rod 17 and two air chambers 93 that are opened at one end of the interior of the grinding rod 17. A connecting cavity 95 is opened between the two air chambers 93. Multiple inclined jet nozzles 94 are evenly opened inside the two air chambers 93. A microchannel 92 is opened on one side inside one of the air chambers 93.

[0029] Two air chambers 93 are located on both sides of the grinding wheel 18, and the air nozzle 94 sprays air towards the grinding contact area of ​​the grinding wheel 18. The connecting chamber 95 is funnel-shaped.

[0030] The third gear 15 and the second gear 16 mesh with each other, the microchannel 92 and the second rotary joint 91 are internally connected to each other, and the other end of the second rotary joint 91 is connected to an external air intake hose.

[0031] A servo motor 3 is fixedly connected to one end of the base 1. A threaded rod 4 is fixedly connected to the output end of the servo motor 3. A threaded hole is provided at the bottom of the sliding table 5. The threaded rod 4 passes through the threaded hole and is connected to the sliding table 5 through the internal thread of the threaded hole.

[0032] When a large amount of cold air is introduced into the nut for cooling, the core area of ​​the grinding wheel 18 in contact with the thread cannot receive the cold air and cannot be sufficiently cooled. Therefore, before grinding, airflow is injected into the external air inlet hose. The airflow enters the interior of the microchannel 92 through the second rotary joint 91, then enters the interior of the two air chambers 93, and is ejected from the air jet nozzle 94. The airflow is aimed at the grinding contact area, directly carrying away the grinding heat, preventing the grinding wheel from sticking to the chip, preventing the thread surface from burning, and avoiding thermal deformation that leads to tooth profile distortion.

[0033] like Figures 7-10 As shown, a wear debris recovery assembly 8 is provided at the middle of the front and rear ends of the base 1. The wear debris recovery assembly 8 includes a side plate 81 fixed at the middle of the front and rear ends of the base 1. A support slide rod 82 is slidably connected inside the side plate 81. A collection cover 84 is fixedly connected to the side of the two support slide rods 82 that are close to each other. An air inlet 86 is provided on one side of the collection cover 84. A groove 85 is provided in the middle of the side of the two collection covers 84 that are close to each other. An internal thread plate 816 is fixedly connected to the bottom of the other side of the collection cover 84. A bidirectional threaded rod 83 is connected to the internal thread of the internal thread plate 816. A telescopic hose 812 is fixedly connected to the bottom of the collection cover 84. A three-way pipe 89 is fixedly connected to one end of the two telescopic hoses 812. A mounting frame 87 is fixedly connected to the bottom of the three-way pipe 89. A connecting pipe 810 is fixedly connected to the bottom of the mounting frame 87. A negative pressure air pump 811 is connected to the other end of the connecting pipe 810.

[0034] One side of the bidirectional threaded rod 83 passes through one of the side plates 81. The bidirectional threaded rod 83 is connected to the side plate 81 through a bearing. A U-shaped plate 814 is inserted inside the mounting frame 87. Three electromagnet plates 813 are evenly arranged on both sides inside the U-shaped plate 814. The electromagnet plates 813 on both sides are arranged alternately. A connection port 815 is opened at the bottom inside the U-shaped plate 814. The connection port 815 coincides with and connects to the inlet of the connecting pipe 810. A protective net is installed inside the air inlet 86.

[0035] During the grinding of the internal thread of a nut, a large amount of debris is generated. This debris, after splashing, remains inside the internal thread raceway. If the hard abrasive shavings produced during grinding are not removed in time, they will form secondary abrasive cutting between the grinding wheel and the nut thread surface, causing scratches, burrs, and pitting on the thread surface, resulting in excessive surface roughness and affecting the transmission smoothness and service life of the screw-nut pair. Therefore, during grinding, a collection cover 84 is installed at the front end of the nut. The negative pressure air pump 811 is activated, creating a strong negative pressure suction inside the collection cover 84. When the cooling air inside the nut cools the grinding area, it simultaneously carries a large amount of debris out of the nut. The debris enters the interior of the two collection hoods 84 under the strong suction of the two collection hoods 84, and then enters the interior of the mounting frame 87 through the telescopic hose 812 and the three-way pipe 89 in sequence. When the airflow carries the debris into the interior of the mounting frame 87, the electromagnet plates 813 on both sides are staggered, forming an S-shaped flow channel between the electromagnet plates 813. The airflow passes back and forth through the multiple layers of electromagnet plates 813 from the inside of the flow channel. The magnetic force of the electromagnet plates 813 will attract the debris in the airflow, which can effectively remove the debris in the airflow and collect the grinding shavings. This ensures that the grinding shavings do not embed into the thread root, dust does not leak out, there is no dust pollution in the workshop, and the grinding shavings can be uniformly recycled and reused.

[0036] like Figures 9-10 As shown, the cold installation frame 87 is provided with disassembly components 88 on both sides. The disassembly components 88 include a shielding plate 882 inserted on the front side of the installation frame 87 and a fixing shaft 881 fixed on both sides of the installation frame 87. The shielding plate 882 is fixedly connected to the two sides with a card plate 883, and the card plate 883 has a card slot 884 inside.

[0037] The card plate 883 is fastened to the outer surface of the fixed shaft 881 through the card slot 884, and a sealing gasket is provided on one side of the shielding plate 882.

[0038] A fixed cleaning cycle is set according to the number of processed nuts to clean and recycle the debris on the surface of the electromagnet plate 813. This avoids excessive debris from affecting the adsorption force of the electromagnet plate 813 and the ventilation cross-sectional area of ​​the S-shaped flow channel. The shielding plate 882 is lifted upwards, and the shielding plate 882 simultaneously moves the two clamping plates 883 upwards as a whole, so that the fixed shaft 881 is separated from the inside of the clamping slot 884. At this time, the shielding plate 882 can be removed from one side of the mounting frame 87, and the U-shaped plate 814 inside can be pulled out as a whole to collect the debris on the surface of the electromagnet plate 813.

[0039] Usage: Fix the nut to be ground inside the circular frame 19. When the grinding wheel 18 enters the nut, rotate the bidirectional threaded rod 83. The two internal threaded plates 816 drive the two collecting covers 84 to move closer together. The two collecting covers 84 fit together, so that the two grooves 85 are fitted onto the outer surface of the grinding rod 17 but do not contact each other. During grinding, compressed air is injected into the compressed air delivery pipe of the vortex tube cold air generator 75. The compressed air enters the interior of the vortex tube cold air generator 75, and the gas forms two airflows inside the vortex tube cold air generator 75, one hot airflow and one cold airflow. The cold airflow enters the interior of the first rotary joint 74, and then enters the interior of the nut through the connecting cover 73. A large amount of cold air enters the interior of the nut and carries away the grinding heat. Before grinding, airflow is injected into the external air inlet hose. The airflow enters the microchannel 92 through the second rotary joint 91, then enters the two air chambers 93, and is ejected from the jet nozzle 94. The airflow is aimed at the grinding contact area, directly carrying away the grinding heat, preventing the grinding wheel from sticking to the chips, preventing the thread surface from burning, and avoiding thermal deformation that leads to tooth profile distortion. Under the strong suction of the two collection hoods 84, the splashed metal debris enters the interior of the collection hoods 84, and then sequentially enters the interior of the mounting frame 87 through the telescopic hose 812 and the three-way pipe 89. When the airflow carrying the debris enters the interior of the mounting frame 87, the staggered arrangement of the electromagnet plates 813 on both sides forms an S-shaped flow channel between the electromagnet plates 813. The airflow passes back and forth through the multiple layers of electromagnet plates 813 from inside the flow channel, and the magnetic force of the electromagnet plates 813 attracts the debris in the airflow.

[0040] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A high-precision ball screw nut grinding device, comprising a base (1), wherein two slide rails (2) are symmetrically provided on one side of the top of the base (1), and a sliding table (5) is slidably connected to the outer surface of the two slide rails (2), a second drive motor (14) is fixedly connected to one side of the sliding table (5), a third gear (15) is fixedly connected to the output end of the second drive motor (14), and a grinding rod (17) is rotatably connected inside the sliding table (5), and a second gear (15) is fixedly connected to the outer surface of the grinding rod (17). 6) A grinding wheel (18) is fixedly connected to the front end of the outer surface of the grinding rod (17). A servo motor (3) is fixedly connected to one end of the base (1). A threaded rod (4) is fixedly connected to the output end of the servo motor (3). A fixing plate (6) is fixedly connected to the other side of the top of the base (1). A circular frame (19) is rotatably connected inside the fixing plate (6). Three clamping push rods (20) are evenly fixedly connected inside the circular frame (19). An arc-shaped clamping plate (10) is fixedly connected to the output end of the clamping push rod (20). Its features are: A cooling assembly (7) for cooling the inside of the nut is provided on one side of the fixing plate (6) near the top. The cooling assembly (7) includes a first hydraulic push rod (71) symmetrically fixed on one side of the fixed plate (6). The output end of the first hydraulic push rod (71) is fixedly connected to a mounting plate (72). A connecting cover (73) is fixedly connected to one side of the two mounting plates (72) that are close to each other. A first rotary joint (74) is rotatably connected to one side of the connecting cover (73). A vortex tube cold air generator (75) is connected to the other end of the first rotary joint (74). A sealing ring (76) is fixedly connected to the inner surface of the connecting cover (73).

2. The high-precision ball screw nut grinding device according to claim 1, characterized in that: The first drive motor (12) is fixedly connected to the middle of the side of the fixed plate (6) near the first hydraulic push rod (71). The output end of the first drive motor (12) is fixedly connected to the first gear (11). The outer surface of the circular frame (19) is fixedly connected to the ring rack (13). The first gear (11) and the ring rack (13) mesh with each other. A rubber pad is provided on one side of the arc-shaped clamp (10). The cold air output end of the vortex tube cold air generator (75) is connected to the first rotary joint (74). The air inlet end of the vortex tube cold air generator (75) is provided with a compressed air delivery pipe. The hot air output end of the vortex tube cold air generator (75) is connected to a heat exhaust hose. The sealing ring (76) is preferably a multi-step or conical sealing ring made of high elastic silicone material.

3. The high-precision ball screw nut grinding device according to claim 1, characterized in that: The grinding rod (17) is provided with a directional spray assembly (9) for cooling the grinding area of ​​the grinding wheel (18). The directional spray assembly (9) includes a second rotary joint (91) that rotates at one end of the grinding rod (17) and two air chambers (93) opened at one end of the grinding rod (17). A connecting cavity (95) is opened between the two air chambers (93). Multiple inclined air nozzles (94) are evenly opened inside the two air chambers (93). A microchannel (92) is opened on one side inside one of the air chambers (93).

4. The high-precision ball screw nut grinding device according to claim 3, characterized in that: Two air chambers (93) are located on both sides of the grinding wheel (18), the air nozzle (94) sprays air towards the grinding contact area of ​​the grinding wheel (18), and the connecting cavity (95) is funnel-shaped.

5. The high-precision ball screw nut grinding device according to claim 4, characterized in that: The third gear (15) and the second gear (16) mesh with each other, the microchannel (92) and the second rotary joint (91) are internally connected to each other, and the other end of the second rotary joint (91) is connected to an external air intake hose.

6. The high-precision ball screw nut grinding device according to claim 1, characterized in that: One end of the base (1) is fixedly connected to a servo motor (3), and the output end of the servo motor (3) is fixedly connected to a threaded rod (4). The bottom of the sliding table (5) is provided with a threaded hole, and the threaded rod (4) passes through the threaded hole. The threaded rod (4) is connected to the sliding table (5) through the internal thread of the threaded hole.

7. The high-precision ball screw nut grinding device according to claim 1, characterized in that: A wear debris recovery assembly (8) is provided at the middle of the front and rear ends of the base (1). The wear debris recovery assembly (8) includes a side plate (81) fixed at the middle of the front and rear ends of the base (1). A support slide rod (82) is slidably connected inside the side plate (81). A collection cover (84) is fixedly connected to the side of the two support slide rods (82) that are close to each other. An air inlet (86) is provided on one side of the collection cover (84). A groove (85) is provided at the middle of the side of the two collection covers (84) that are close to each other. On the other side, a threaded plate (816) is fixedly connected to the bottom. The threaded plate (816) is connected to a two-way threaded rod (83) by its internal thread. A telescopic hose (812) is fixedly connected to the bottom of the collection cover (84). A three-way pipe (89) is fixedly connected to one end of each of the two telescopic hoses (812). A mounting frame (87) is fixedly connected to the bottom of the three-way pipe (89). A connecting pipe (810) is fixedly connected to the bottom of the mounting frame (87). A negative pressure air pump (811) is connected to the other end of the connecting pipe (810).

8. A high-precision ball screw nut grinding device according to claim 7, characterized in that: One side of the bidirectional threaded rod (83) passes through one of the side plates (81). The bidirectional threaded rod (83) is connected to the side plate (81) through a bearing. A U-shaped plate (814) is inserted inside the mounting frame (87). Three electromagnet plates (813) are evenly arranged on both sides inside the U-shaped plate (814). The electromagnet plates (813) on both sides are arranged alternately. A connection port (815) is opened at the bottom inside the U-shaped plate (814). The connection port (815) coincides with and connects to the inlet of the connecting pipe (810). A protective net is installed inside the air inlet (86).

9. A high-precision ball screw nut grinding device according to claim 8, characterized in that: The mounting frame (87) is provided with disassembly components (88) on both sides. The disassembly components (88) include a shielding plate (882) inserted on the front side of the mounting frame (87) and a fixing shaft (881) fixed on both sides of the mounting frame (87). The shielding plate (882) is fixedly connected to the two sides with a card plate (883), and the card plate (883) has a card slot (884) inside.

10. A high-precision ball screw nut grinding device according to claim 9, characterized in that: The card plate (883) is fastened to the outer surface of the fixed shaft (881) through the card slot (884), and a sealing gasket is provided on one side of the shielding plate (882).

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