A locknut and its processing method

Abstract

The present application discloses a anti-loosening nut and a processing method thereof, comprising a main nut, which has an inner threaded hole and an outer threaded sleeve fixedly installed on the top; a secondary nut, which is installed on the outer threaded sleeve through a thread; a plurality of limiting rods, which can be movably inserted into the side wall of the outer threaded sleeve through corresponding sliding holes; a plurality of sliding holes, which are arranged on the secondary nut at intervals along the circumference, and the outer ends of the plurality of sliding rods are sealed with steel balls; a plurality of sliding rods can be slidably installed in the corresponding sliding holes through corresponding preloaded springs, each preloaded spring is respectively arranged between the corresponding steel ball and the sliding rod, and the inner end of each sliding rod can be inserted into the corresponding sliding hole. By adopting the above technical solution, in daily use, a tool is used to clamp the main nut and the secondary nut at the same time, and after tightening them, the secondary nut is clamped separately and tightened, so that the inner ends of each limiting rod are inserted into the internal thread, and each sliding rod is inserted into the outer ends of each sliding hole, so that the thread matching the internal thread is deformed, and the secondary nut is restricted so that it cannot be rotated again, so that the main nut and the secondary nut are completely locked.

Description

Technical Field

[0001] The invention relates to a locking nut and a processing method thereof. Background Art

[0002] Nuts are commonly used components in mechanical connections. However, under vibration conditions, ordinary nuts often loosen on their own, causing the connection to fail.

[0003] To solve the above technical problems, a Chinese utility model patent with publication number CN111649048B has been published. It is a kind of anti-loosening nut kit, which includes a nut, a base, a nut bevel, and a base bevel. During the installation process, the nut bevel and the base bevel are opposite and fit together. The two are screwed together with a tool, so that the nut bevel and the base bevel are squeezed against each other and deviate from the screw axis in the opposite direction, thereby holding the screw tightly and preventing it from loosening. However, the following defects exist:

[0004] 1. Improving the anti-loosening effect by only tightening the threads can extend the time it takes for the nut to loosen, but it still cannot completely prevent the nut from loosening;

[0005] 2. It is necessary to process slots, cross-sectional gaps, nut bevels, base bevels and grooves on the nut, which makes the processing difficult and the manufacturing cost high. Summary of the Invention

[0006] The present invention aims to solve one of the technical problems existing in the prior art.

[0007] The present application provides a locking nut, comprising:

[0008] The main nut has an inner thread hole and an outer thread sleeve fixed on the top;

[0009] A secondary nut, which is mounted on the outer sleeve through threads;

[0010] A plurality of limiting rods are movably inserted into the side wall of the outer screw sleeve through corresponding sliding holes;

[0011] When the auxiliary nut approaches the main nut, pressure is applied to the outer ends of each limiting rod.

[0012] Also includes:

[0013] A plurality of sliding holes are arranged on the secondary nut at intervals along the circumference, and the outer ends of the holes are sealed with steel balls;

[0014] A plurality of slide rods are slidably mounted in corresponding slide holes via corresponding preload springs;

[0015] Wherein, each preload spring is respectively arranged between the corresponding steel ball and the sliding rod, and the inner end of each sliding rod can be inserted into the corresponding sliding hole.

[0016] Also includes:

[0017] A plurality of inclined grooves are respectively arranged on the top of the outer end of each limiting rod;

[0018] The inner end of each slide bar is tilted to fit into the corresponding inclined slot.

[0019] Also disclosed is a tapping device suitable for the aforementioned anti-loosening nut, comprising:

[0020] The machine has an equipment cavity inside and a tapping device on one side;

[0021] A rotary table, which is driven by a rotary actuator and rotatably mounted on the top surface of the machine;

[0022] Several fixing fixtures are installed on the rotating table to fix the main nut;

[0023] Among them, the tapping device is equipped with a liftable tapping drill bit and a tapping sleeve, which can correspond to two fixed toolings respectively.

[0024] Also includes:

[0025] a slot, which is provided on the side wall of the machine platform and communicates with the equipment cavity;

[0026] A conveyor belt, one end of which is installed in the equipment cavity and the other end passes through the slot and extends outside the machine;

[0027] The blanking port is set on the top surface of the machine, aligned with the conveyor belt and away from the tapping equipment.

[0028] Tapping device includes:

[0029] A vertical plate, which is fixedly mounted on the side wall of the machine, with the top extending upward;

[0030] The horizontal plate is fixedly mounted on the top of the vertical plate and extends above the rotating table;

[0031] A lifting plate, which is driven by a straight-moving actuator and can be lifted and lowered below the horizontal plate;

[0032] A pair of tapping motors are symmetrically fixedly installed at both ends of the lifting plate, and are used to drive the tapping drill bit and the tapping sleeve to rotate respectively.

[0033] Fixed tooling includes:

[0034] a fixed platform, which is fixedly mounted on the rotating platform;

[0035] The receiving groove is arranged in the fixing platform and passes through the fixing platform from top to bottom;

[0036] A plurality of transverse holes are arranged at intervals on the peripheral wall of the fixing platform and are connected to the accommodating groove;

[0037] A plurality of limiting rods are slidably inserted into corresponding transverse holes, and the outer ends of the rods are provided with downward inclined surfaces;

[0038] The clamping device is used to push each limiting rod toward the accommodating groove when the fixing platform moves to correspond to the tapping device.

[0039] The clamping device includes:

[0040] A floating ring, which can be raised and lowered and is mounted on the outside of the fixed platform;

[0041] A pair of rotary grooves are arranged on the top surface of the machine table at intervals and are concentric with the rotating table, each including a deep section and a shallow section;

[0042] A pair of support rods are symmetrically fixedly mounted on the bottom of the rotary groove, with the lower ends being slidably inserted through the rotating table, extending into the corresponding rotary grooves, and abutting against the bottom ends of the corresponding rotary grooves;

[0043] A pair of convex rings are fixedly mounted on the lower ends of each support rod;

[0044] A pair of pressure springs are respectively sleeved on the outside of each support rod, with the upper end abutting against the bottom surface of the turntable and the lower end abutting against the corresponding convex ring;

[0045] Among them, the shallow section corresponds to the tapping device.

[0046] Preferred:

[0047] A plurality of clamping devices share a pair of rotary slots.

[0048] Also disclosed is a method for processing a locking nut suitable for the aforementioned tapping equipment, comprising the following steps:

[0049] S1, turning to obtain the main nut and auxiliary nut rough blanks with untapped external thread sleeves;

[0050] S2. Drilling the main nut and the auxiliary nut to obtain a main nut rough blank having a center hole and a plurality of sliding holes, and obtaining an auxiliary nut rough blank having a center hole and a plurality of sliding holes;

[0051] S3. Tap the center hole of the secondary nut;

[0052] S4. Punch a number of steel balls into the outer ends of each sliding hole, and install the preload spring and the sliding rod into each sliding hole in sequence;

[0053] S5. Load the main nut blank into a fixed fixture and fix it. The rotary actuator drives the rotary table to rotate. The main nut blank is moved under the tapping device. The center hole of the main nut and the outer wall of the outer screw sleeve are tapped to obtain a finished main nut.

[0054] S6. The fixing fixture releases the fixing of the finished main nut after tapping, and the finished main nut falls from the blanking port onto the conveyor belt and is sent out by the conveyor belt;

[0055] S7. Assemble the secondary nut onto the outer thread sleeve to obtain a finished anti-loosening nut.

[0056] The beneficial effects of the present invention are as follows:

[0057] 1. Through the arrangement of the main nut, outer screw sleeve, auxiliary nut, several sliding holes and several limiting rods, the main nut and auxiliary nut are tightened in sequence, so that each limiting rod is inserted into the inner screw hole, squeezing the thread matched with it to deform and engage with the thread to achieve complete locking, and the main nut will not be loosened due to vibration. The structure is simple, easy to process and low in manufacturing cost.

[0058] 2. Through the arrangement of a number of sliding holes, a number of sliding rods, a number of steel balls and a number of preload springs, the tightened secondary nut is locked in cooperation with each sliding hole to prevent the secondary nut from loosening under the action of vibration;

[0059] 3. Through the arrangement of the machine platform, equipment cavity, rotary table, rotary actuator, several fixed fixtures, notches, conveyor belts and blanking ports, the internal thread of the main nut and the thread on the outer wall of the external screw sleeve can be processed with only one fixation, and the material can be automatically blanked, thereby improving processing efficiency;

[0060] 4. Through the arrangement of a fixed platform, a receiving groove, a plurality of transverse grooves, a plurality of limiting rods and a plurality of clamping devices, the main nut moved to the bottom of the tapping device is limited and reinforced, and the main nut that has not been tapped or has been tapped is limited in position, which facilitates the loading, tapping and unloading actions and improves work efficiency;

[0061] 5. Through the setting of a floating ring, a pair of rotary grooves, a pair of support rods, a pair of convex rings and a pair of pressure springs, the shallow section of the rotary groove corresponds to the tapping device, and the deep section is away from the tapping device. When the fixed platform moves to correspond to the tapping device, the floating ring rises, causing each limiting rod to move toward the accommodating groove to reinforce the main nut. When the moving platform is away from the tapping device, the floating ring descends, releasing the pressure on each limiting rod, making loading and unloading convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 This is a schematic diagram of the specific structure of the anti-loosening nut in the embodiment of the present application when it is not installed;

[0063] Figure 2 When installing the specific structural diagram of the anti-loosening nut in the embodiment of the present application;

[0064] Figure 3 A top view of the tapping device in an embodiment of the present application;

[0065] Figure 4 This is a top view of the machine in the embodiment of the present application;

[0066] Figure 5 This is a schematic diagram of the cross-sectional structure in the AA direction in an embodiment of the present application;

[0067] Figure 6 This is a schematic diagram of the cross-sectional structure in the BB direction in an embodiment of the present application;

[0068] Figure 7 for Figure 6 Schematic diagram of the partially enlarged structure at point C in the middle.

[0069] Reference numerals

[0070] 101-main nut, 102-inner screw hole, 103-outer screw sleeve, 104-secondary nut, 105-limiting rod, 106-sliding hole, 107-sliding hole, 108-sliding rod, 109-preload spring, 110-slant groove, 201-machine table, 202-equipment cavity, 203-rotating table, 204-rotating actuator, 2041-circular groove, 2042-rotating sleeve, 2043-gear ring, 2044-gear, 2045-actuating motor, 205-slot, 206-conveyor belt, 20 7-blanking port, 3-tapping device, 301-tapping drill bit, 302-tapping sleeve, 303-vertical plate, 304-horizontal plate, 305-lifting plate, 306-tapping motor, 307-straight actuator, 4-fixed tooling, 401-fixed table, 402-accommodating groove, 403-horizontal hole, 404-limiting rod, 5-clamping device, 501-floating ring, 502-rotating groove, 5021-deep section, 5022-shallow section, 503-support rod, 504-convex ring, 505-pressure spring. DETAILED DESCRIPTION

[0071] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0072] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0073] The server provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0074] Example 1:

[0075] like Figures 1 to 2 As shown, an embodiment of the present application provides a locking nut, including a main nut 101, which has an internal threaded hole 102 and an external threaded sleeve 103 fixedly installed on the top; a secondary nut 104, which is installed on the external threaded sleeve 103 through a thread; and a plurality of limiting rods 105, which can be movably inserted into the side wall of the external threaded sleeve 103 through corresponding sliding holes 106. When the secondary nut 104 approaches the main nut 101, pressure is applied to the outer end of each limiting rod 105.

[0076] Furthermore, it also includes a plurality of sliding holes 107, which are arranged on the secondary nut 104 at intervals along the circumferential direction, and the outer ends of each are sealed with steel balls; a plurality of sliding rods 108, which can be slidably installed in the corresponding sliding holes 107 through corresponding preload springs 109, and each preload spring 109 is respectively arranged between the corresponding steel ball and the sliding rod 108, and the inner end of each sliding rod 108 can be inserted into the corresponding sliding hole 106.

[0077] Furthermore, it includes a plurality of inclined grooves 110 , which are respectively arranged at the top of the outer end of each limiting rod 105 , and the inner end of each sliding rod 108 is inclined to be adapted to the corresponding inclined groove 110 .

[0078] In this embodiment of the present application, due to the adoption of the above-mentioned structure, during installation, a tool is used to clamp the main nut 101 and the auxiliary nut 104 at the same time, so that after the main nut 101 is tightened, the auxiliary nut 104 is clamped separately, and the auxiliary nut 104 is tightened. During this process, the auxiliary nut 104 descends outside the outer screw sleeve 103 and contacts the inclined groove 110 at the outer end of each limiting rod 105. During the descending process, each limiting rod 105 is pushed toward the direction of the internal thread, and each limiting rod 105 is tightened. The inner end of each rod 108 is inserted into the inner screw hole 102 and inserted into the thread that matches the inner screw hole 102, and is engaged with the thread. As the secondary nut 104 descends to the bottom surface and abuts the top surface of the main nut 101, the sliding holes 107 move to the corresponding positions of the sliding holes 106. Under the action of the preload spring 109, the outer ends of each sliding rod 108 are respectively inserted into the sliding grooves and fit into the inclined grooves 110. At this time, the lower part of the outer end of each limiting rod 105 is still abutting the inner ring of the secondary nut 104.

[0079] When the inner ends of the slide bars 108 are inserted into the corresponding sliding grooves, the corresponding preload springs 109 still exert sufficient thrust on the slide bars 108 to prevent the slide bars 108 from being affected by vibration and falling out of the corresponding sliding grooves.

[0080] Example 2:

[0081] like Figure 3 、 Figure 5 and Figure 6As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, a tapping device is also disclosed, including a machine table 201, which has an equipment cavity 202 inside and a tapping device 3 on one side; a rotating table 203, which is driven by a rotating actuator 204 and can be rotatably installed on the top surface of the machine table 201; a plurality of fixed toolings 4, which are installed on the rotating table 203 and are used to fix the main nut 101, and the tapping device 3 has a liftable tapping drill bit 301 and a tapping sleeve 302, which can correspond to two fixed toolings 4 respectively.

[0082] Furthermore, it also includes a slot 205, which is arranged on the side wall of the machine 201 and connected to the equipment cavity 202; a conveyor belt 206, one end of which is installed in the equipment cavity 202, and the other end passes through the slot 205 and extends out of the machine 201; a blanking port 207, which is arranged on the top surface of the machine 201, aligned with the conveyor belt 206, and away from the tapping equipment.

[0083] Furthermore, the tapping device 3 includes a vertical plate 303, which is fixedly mounted on the side wall of the machine platform 201 and has its top extending upward; a horizontal plate 304, which is fixedly mounted on the top of the vertical plate 303 and extends above the rotary table 203; a lifting plate 305, which is driven by a linear actuator 307 and can be lifted and lowered below the horizontal plate 304; a pair of tapping motors 306, which are symmetrically fixedly mounted at both ends of the lifting plate 305, and are respectively used to drive the tapping drill 301 and the tapping sleeve 302 to rotate.

[0084] Furthermore, the rotary actuator 204 includes a circular groove 2041, a rotating sleeve 2042, a ring gear 2043, a gear 2044, and an actuating motor 2045. The circular groove 2041 is set at the center of the machine platform 201. The rotating sleeve 2042 is rotatably mounted in the circular groove 2041 and fixedly connected to the bottom center of the rotating platform 203. The ring gear 2043 is fixedly mounted on the bottom end of the outer peripheral wall of the rotating sleeve 2042. The gear 2044 is mounted on the output shaft of the actuating motor 2045 and meshes with the ring gear 2043 for transmission.

[0085] The linear actuator 307 is a pneumatic cylinder, an oil cylinder or an electric push rod.

[0086] Also disclosed is a method for processing a locking nut suitable for the aforementioned tapping equipment, comprising the following steps:

[0087] S1, turning to obtain a rough blank of the main nut 101 and the auxiliary nut 104 with an untapped external screw sleeve 103;

[0088] S2. Drill the main nut 101 and the auxiliary nut 104 to obtain a rough blank of the main nut 101 having a center hole and a plurality of sliding holes 106, and a rough blank of the auxiliary nut 104 having a center hole and a plurality of sliding holes 107;

[0089] S3, tapping the center hole of the secondary nut 104;

[0090] S4. Punch a number of steel balls into the outer ends of the slide holes 107, and install the preload spring 109 and the slide rod 108 into each slide hole 107 in sequence;

[0091] S5. The main nut 101 blank is loaded into the fixed fixture 4 and fixed. The rotary actuator 204 drives the rotary table 203 to rotate. The main nut 101 blank is moved below the tapping device 3. The center hole of the main nut 101 and the outer wall of the outer screw sleeve 103 are tapped to obtain the finished main nut 101.

[0092] S6, the fixing tool 4 releases the fixing of the finished main nut 101 after tapping, and the finished main nut 101 falls from the drop port 207 onto the conveyor belt 206 and is sent out by the conveyor belt 206;

[0093] S7, assembling the secondary nut 104 onto the outside of the outer threaded sleeve 103 to obtain a finished anti-loosening nut.

[0094] In this embodiment of the present application, due to the adoption of the above-mentioned structure and method, when tapping the main nut 101 rough blank, the main nut 101 rough blank is placed in one of the fixed fixtures 4, and the rotary table 203 is rotated under the drive of the rotary actuator 204, so that the fixed fixture 4 loaded with the main nut 101 rough blank is moved to under the tapping drill bit 301. At this time, the worker places the next main nut 101 rough blank in the next fixed fixture 4, and the straight-moving actuator 307 is actuated to lower the lifting plate 305, and a pair of tapping motors 306 rotate accordingly, and the tapping drill bit 301 and the tapping sleeve 302 tap the corresponding main nut 101 rough blank. After the tapping is completed, the straight-moving actuator 307 is actuated to lower the lifting plate 305 and the pair of tapping motors 306. The machine 306, the tapping drill bit 301 and the tapping sleeve 302 rise and move away from the main nut 101 rough blank. Then, the rotary table 203 continues to rotate under the drive of the corresponding rotary actuator 204, so that the main nut 101 rough blank that has not been tapped moves to under the tapping drill bit 301. The main nut 101 rough blank with the center hole tapped moves to under the tapping sleeve 302. The main nut 101 rough blank with all tappings moves to above the blanking port 207 (under the action of gravity, the main nut 101 rough blank with the tapping completed falls from the blanking port 207 onto the conveyor belt 206 and is sent out by the conveyor belt 206. The fixed tool 4 that completes unloading moves to between the tapping drill bit 301 and the blanking port 207, and the worker places the main nut 101 rough blank that has not been tapped;

[0095] Only through turning, drilling, tapping and assembly can a complete anti-loosening nut with strong anti-loosening effect be obtained. The steps and structure are simple and easy to produce.

[0096] Example 3:

[0097] like Figures 3 to 6As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the fixed tooling 4 includes a fixed table 401, which is fixedly mounted on the rotating table 203; a receiving groove 402, which is arranged in the fixed table 401 and passes through from top to bottom; a plurality of transverse holes 403, which are arranged at intervals on the peripheral wall of the fixed table 401 and are connected to the receiving groove 402; a plurality of limiting rods 404, which can be slidably inserted in the corresponding transverse holes 403, and the outer ends are all provided with lower inclined surfaces; a clamping device 5, which is used to push each limiting rod 404 toward the receiving groove 402 when the fixed table 401 moves to correspond to the tapping device 3.

[0098] Furthermore, the clamping device 5 includes a floating ring 501, which can be raised and lowered and sleeved on the outside of the fixed table 401; a pair of rotary grooves 502, which are arranged at intervals on the top surface of the machine table 201 and are concentric with the rotating table 203, and both include a deep section 5021 and a shallow section 5022; a pair of support rods 503, which are symmetrically fixedly installed at the bottom of the rotary grooves 502, and the lower ends can slide through the rotating table 203, extend into the corresponding rotary grooves 502, and abut against the bottom ends of the corresponding rotary grooves 502; a pair of convex rings 504, which are fixedly installed at the lower ends of each support rod 503; a pair of pressure springs 505, which are respectively sleeved on the outside of each support rod 503, with the upper ends abutting against the bottom surface of the turntable and the lower ends abutting against the corresponding convex rings 504, and the shallow section 5022 corresponds to the tapping device 3.

[0099] Preferably, the plurality of clamping devices 5 share a pair of rotary grooves 502 .

[0100] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the main nut 101 blank is placed in the receiving groove 402. When the fixing platform 401 moves to the bottom of the tapping device 3, the lower ends of the pair of support rods 503 slide from the deep section 5021 of the corresponding rotary groove 502 to the shallow section 5022, pushing the floating ring 501 upward. The inner peripheral wall of the floating ring 501 cooperates with the lower inclined surface of the outer end of each limiting rod 404, pushing each limiting rod 404 to slide toward the receiving groove 402, so that the inner end of each limiting rod 105 abuts against the outer wall of the main nut 101 blank, thereby fixing the main nut 101 blank. At this time, each pressure spring 505 is compressed and shortened, storing elastic potential energy.

[0101] When the fixed platform 401 is separated from the tapping device 3, the lower ends of a pair of support rods 503 slide from the shallow section 5022 of the corresponding rotary groove 502 to the deep section 5021, and each pressure spring 505 releases elastic potential energy, pushing each convex ring 504 and the corresponding support rod 503 to descend, causing the floating ring 501 to descend, and its inner ring is disengaged from the outer end of each limiting rod 404. The contact exerts pressure on each limiting rod 404, so that the inner end of each limiting rod 404 releases the fixation on the rough main nut 101.

[0102] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0103] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A tapping device for a locknut, the locknut comprising: The main nut has an inner thread hole and an outer thread sleeve fixed on the top; A secondary nut, which is threadably mounted on the outer screw sleeve; A plurality of limiting rods are movably inserted into the side wall of the outer screw sleeve through corresponding sliding holes; Wherein, when the auxiliary nut approaches the main nut, pressure is applied to the outer ends of each limiting rod; Also includes: A plurality of sliding holes are arranged on the secondary nut at intervals along the circumferential direction, and the outer ends of the sliding holes are sealed with steel balls; A plurality of slide rods are slidably mounted in corresponding slide holes via corresponding preload springs; Wherein, each of the preload springs is respectively arranged between the corresponding steel ball and the slide rod, and the inner end of each of the slide rods can be inserted into the corresponding sliding hole; The tapping equipment comprises: The machine has an equipment cavity inside and a tapping device on one side; a rotating table, which is driven by a rotary actuator and rotatably mounted on the top surface of the machine table; A plurality of fixing fixtures, mounted on the rotating platform, for fixing the main nut; The tapping device is provided with a liftable tapping drill bit and a tapping sleeve, which can correspond to two fixed toolings respectively; Also includes: a notch, which is provided on the side wall of the machine platform and communicates with the equipment cavity; a conveyor belt, one end of which is installed in the equipment cavity and the other end of which passes through the slot and extends outside the machine; A blanking port is provided on the top surface of the machine, aligned with the conveyor belt and away from the tapping device; The fixed tooling includes: a fixed platform, which is fixedly mounted on the rotating platform; A receiving groove is provided in the fixing platform and passes through the fixing platform vertically; A plurality of transverse holes are arranged at intervals on the peripheral wall of the fixing platform and are connected to the accommodating groove; A plurality of limiting rods are slidably inserted into corresponding transverse holes, and the outer ends of the rods are provided with downward inclined surfaces; A clamping device, used to push each limiting rod toward the receiving groove when the fixing platform moves to correspond to the tapping device; The clamping device comprises: A floating ring, which is liftable and sleeved on the outside of the fixed platform; A pair of rotary grooves are arranged at intervals on the top surface of the machine platform, are cocentric with the rotating platform, and each includes a deep section and a shallow section; A pair of support rods are symmetrically fixedly mounted on the bottom of the rotary groove, with the lower ends being slidably inserted through the rotating table, extending into the corresponding rotary grooves, and abutting against the bottom ends of the corresponding rotary grooves; A pair of convex rings fixedly mounted on the lower end of each of the support rods; A pair of pressure springs are respectively sleeved on the outside of each support rod, with the upper ends abutting against the bottom surface of the turntable and the lower ends abutting against the corresponding convex ring; Wherein, the shallow section corresponds to the tapping device.

2. The tapping device for a locking nut according to claim 1, characterized in that: The tapping device comprises: A vertical plate, which is fixedly mounted on the side wall of the machine, with the top end extending upward; A horizontal plate, which is fixedly mounted on the top of the vertical plate and extends above the rotating platform; A lifting plate, which is driven by a straight-moving actuator and can be lifted and lowered below the horizontal plate; A pair of tapping motors are symmetrically fixedly mounted at both ends of the lifting plate and are used to drive the tapping drill bit and the tapping sleeve to rotate respectively.

3. The tapping device for a locking nut according to claim 1, characterized in that: The plurality of clamping devices share a pair of rotary grooves.

4. A method for processing a tapping device suitable for the anti-loosening nut according to claim 1, characterized in that: The following steps are involved: S1, turning to obtain the main nut and auxiliary nut rough blanks with untapped external thread sleeves; S2. Drilling the main nut and the auxiliary nut to obtain a main nut rough blank having a center hole and a plurality of sliding holes, and obtaining an auxiliary nut rough blank having a center hole and a plurality of sliding holes; S3. Tap the center hole of the secondary nut; S4. Punch a number of steel balls into the outer ends of each sliding hole, and install the preload spring and the sliding rod into each sliding hole in sequence; S5. Load the main nut blank into a fixed fixture and fix it. The rotary actuator drives the rotary table to rotate. The main nut blank is moved under the tapping device. The center hole of the main nut and the outer wall of the outer screw sleeve are tapped to obtain a finished main nut. S6. The fixing fixture releases the fixing of the finished main nut after tapping, and the finished main nut falls from the blanking port onto the conveyor belt and is sent out by the conveyor belt; S7. Assemble the secondary nut onto the outer thread sleeve to obtain a finished anti-loosening nut.

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