Nut double-face chamfering equipment

Abstract

The utility model discloses nut double -sided chamfer processing equipment, including frame, intermittent drive mechanism, revolution disc, a plurality of self -reverting chuck, self -reverting drive mechanism, feeding mechanism, chamfer execution mechanism and unloading mechanism, and the revolution disc is driven by intermittent drive mechanism and is rotated intermittently around the center axle perpendicular to the bottom surface, a plurality of self -reverting chuck evenly distribute on revolution disc along the circumference, and self -reverting drive mechanism is used for driving self -reverting chuck generates autorotation when revolution disc rotates intermittently, and feeding mechanism is used to feed the self -reverting chuck of being located in the feeding station, and two groups chamfer execution mechanism are used respectively to the nut of being held by the self -reverting chuck of being located in the first chamfer station and the second chamfer station to carry out end face chamfer processing, and unloading mechanism is used to unload the nut on the self -reverting chuck of being located in the unloading station. This nut double -sided chamfer processing equipment can efficiently complete nut double -sided chamfer, and can save the cost.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing equipment technology, specifically to a nut double-sided chamfering processing equipment. Background Technology

[0002] As a widely used standard fastener, the chamfering of the two ends of the nut is a crucial process in its manufacturing to remove burrs, facilitate assembly, and prevent stress concentration.

[0003] Currently, there are several common methods for chamfering both sides of nuts: Single-machine, multi-stage processing: The operator first chamfers one end of the nut on a single chamfering machine, then manually flips it over and chamfers the other end. This method suffers from low production efficiency, high labor intensity, and poor processing consistency.

[0004] Specialized double-head chamfering machines: Some existing double-head chamfering machines typically use two chamfering cutters that move synchronously in opposite directions from both sides of the nut. This method has a significant problem: when machining thin-walled or small nuts, the bidirectional cutting force may cause the nut to bend or slightly deform, affecting machining accuracy and even leading to scrap. At the same time, chips tend to fly out from both sides, making them difficult to manage. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a nut double-sided chamfering processing equipment that can efficiently complete the double-sided chamfering of nuts and save costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nut double-sided chamfering processing device, comprising: frame; An intermittent drive mechanism is fixed to the frame; A rotating disk is horizontally positioned and connected to the output shaft of the intermittent drive mechanism, and is driven by the intermittent drive mechanism to rotate intermittently around a central axis perpendicular to the bottom surface; Multiple rotating clamps are evenly distributed circumferentially on the revolution disk; A rotation drive mechanism is used to drive the rotation chuck to rotate when the orbital disk rotates intermittently. A feeding mechanism for feeding the rotating chuck located at the feeding station; The chamfering actuator is provided in two sets. Both sets of the chamfering actuator are mounted on the frame and located on the same side of the rotary table. They are used to chamfer the end face of the nuts held by the rotating chucks at the first chamfering station and the second chamfering station, respectively. A feeding mechanism for removing the nut from the rotating chuck located at the feeding station; The intermittent rotating stations of the rotary table sequentially include the loading station, the first chamfering station, the second chamfering station, and the unloading station; and the self-rotation drive mechanism is configured to drive the self-rotating chuck to rotate 180 degrees when the rotary table rotates one station.

[0007] Furthermore, the number of the self-rotating chucks is four, each corresponding to one of the four workstations.

[0008] Furthermore, the self-rotation drive mechanism includes: A fixed internal gear ring is fixedly installed on the frame, and its central axis coincides with the rotation axis of the rotary disk; Multiple driven gears, the number of which is the same as the number of the rotating chucks, and each driven gear is coaxially and fixedly connected to one of the rotating chucks, and is rotatably connected to the revolution disk; All of the driven gears mesh with the fixed internal gear ring; when the planetary disk rotates, the driven gears are constrained by the fixed internal gear ring and thus rotate.

[0009] Furthermore, the clamping part of the self-rotating chuck is a pneumatic three-jaw chuck or a spring chuck.

[0010] Furthermore, the chamfering actuator includes: The tool holder is mounted on the frame; The spindle motor is mounted on the tool holder; A chamfering tool is connected to the output shaft of the main spindle motor; The feed drive component is connected to the tool holder and is used to drive the tool holder, the spindle motor and the chamfering tool to move horizontally toward or away from the rotating chuck.

[0011] Furthermore, the feed drive component is a cylinder, a hydraulic cylinder, or an electric lead screw slide.

[0012] Furthermore, the unloading mechanism includes a rotary motor and a lever. The rotary motor is fixed to the frame, and one end of the lever is fixed to the output shaft of the rotary motor. When the rotary motor rotates, it drives the other end of the lever to rotate to the unloading station and removes the nut from the self-rotating chuck.

[0013] Furthermore, a material discharge chute is provided next to the material unloading station.

[0014] The beneficial effects of this utility model are: The above-mentioned double-sided chamfering equipment for nuts has at least the following advantages: 1. This processing device achieves "asynchronous processing" of both ends of the nut by setting two sets of chamfering actuators on the same side of the rotary table and using a self-rotating drive mechanism to drive the self-rotating chuck to precisely rotate 180 degrees during the station switching interval. This single-sided sequential processing mode fundamentally eliminates the risk of extrusion deformation of nuts, especially thin-walled nuts, caused by the bidirectional synchronous cutting force of traditional double-head equipment, thereby significantly improving the processing accuracy and pass rate of the product.

[0015] 2. By integrating a rotary table, a rotating chuck, and a rotation drive mechanism, the functions of workpiece clamping, handling, flipping, and multi-station machining are combined into a unified rotary platform. This integrated design makes the overall structure of the equipment very compact, greatly reducing the floor space required and lowering manufacturing costs.

[0016] 3. With this processing equipment, each process (feeding, first-end processing, second-end processing, unloading) can be carried out simultaneously at different stations on the rotary table, realizing the parallelization of the production process. This allows the equipment to complete the output of a finished nut in each working cycle, thereby greatly improving the overall production efficiency. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of a nut double-sided chamfering processing device provided in an embodiment of the present invention; Figure 2 for Figure 1 A partial schematic diagram at point A in the middle; Figure 3 for Figure 1 The diagram shown is a separate explanation of the double-sided chamfering equipment for nuts. Figure label: 100. Frame; 200. Intermittent drive mechanism; 300. Revolutionary disk; 400. Rotating chuck; 500. Rotation drive mechanism; 510. Fixed internal gear ring; 520. Driven gear; 600. Feeding mechanism; 700. Chamfering actuator; 710. Tool holder; 720. Spindle motor; 730. Chamfering tool; 740. Feed drive component; 800. Unloading mechanism; 810. Rotary motor; 820. Lever. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] Please see Figures 1 to 2 This utility model provides a double-sided chamfering processing equipment for nuts. The equipment includes a frame 100, an intermittent drive mechanism 200, a rotary disk 300, multiple rotating chucks 400, a rotation drive mechanism 500, a feeding mechanism 600, a chamfering execution mechanism 700, and a unloading mechanism 800.

[0021] Specifically, the intermittent drive mechanism 200 is fixed to the frame 100. The rotary disk 300 is horizontally positioned and connected to the output shaft of the intermittent drive mechanism 200, and is driven by the intermittent drive mechanism 200 to rotate intermittently around a central axis perpendicular to the bottom surface. Multiple rotating chucks 400 are evenly distributed circumferentially on the rotary disk 300. The rotating drive mechanism 500 is used to drive the rotating chucks 400 to rotate during the intermittent rotation of the rotary disk 300. The feeding mechanism 600 is used to feed materials to the rotating chucks 400 located at the feeding station. There are two sets of chamfering actuators 700, both mounted on the frame 100 and located on the same side of the rotary table 300. These actuators are used to chamfer the end faces of nuts held by the rotating chucks 400 at the first and second chamfering stations, respectively. The unloading mechanism 800 is used to remove the nuts from the rotating chucks 400 at the unloading station.

[0022] The intermittent rotating stations of the rotary table 300 include a loading station, a first chamfering station, a second chamfering station, and a unloading station in sequence; and the self-rotation drive mechanism 500 is configured such that when the rotary table 300 rotates one station, it drives the self-rotating chuck 400 to rotate 180 degrees.

[0023] In practice, the feeding mechanism 600 can use a hopper with an arc-shaped guide rail to transport the nut to the rotating chuck 400 at the feeding station for clamping and fixing.

[0024] In operation, the feeding mechanism 600 transports the nuts to the feeding station. After the nuts are clamped at the feeding station, the rotary table 300 rotates them to the first chamfering station, where end A of the nut faces the chamfering actuator 700, completing the chamfering of end A. Then, the rotary table 300 rotates one station, during which the chuck rotates 180 degrees, causing end B of the nut to face the chamfering actuator 700 on the same side, completing the chamfering of end B at the second chamfering station. Finally, the rotary table 300 rotates the finished nut to the unloading station for unloading. This process is repeated until all nuts have undergone double-sided chamfering.

[0025] The aforementioned double-sided chamfering equipment for nuts employs single-sided asynchronous processing, eliminating the squeezing deformation caused by the bidirectional synchronous cutting force of traditional double-headed equipment. Furthermore, the handling, flipping, and processing functions are integrated into a single rotary mechanism, resulting in a compact and highly efficient machine. In addition, the four-station design allows for simultaneous loading, processing at one end, processing at the other end, and unloading, enabling assembly line operations and significantly improving production efficiency.

[0026] In a preferred embodiment of this utility model, the number of self-rotating chucks 400 is preferably four, which respectively correspond to the four work stations of loading, first chamfering, second chamfering and unloading.

[0027] In this embodiment, the rotation drive mechanism 500 includes a fixed internal gear ring 510 and a plurality of driven gears 520. The fixed internal gear ring 510 is fixedly mounted on the frame 100 by a bracket, and its central axis must be strictly coincident with the rotation axis of the rotary disk 300. The number of driven gears 520 is the same as that of the rotation chucks 400. Each driven gear 520 is coaxially fixedly connected to a rotation chuck 400 and rotatably mounted on the rotary disk 300. All driven gears 520 are engaged with the internal gear ring.

[0028] During operation, when the planetary carrier 300 is driven to rotate by the intermittent drive mechanism 200, the driven gear 520 (planetary gear) mounted on it will also rotate. Since the driven gear 520 meshes with the fixed internal gear ring (center gear), the gear is forced to rotate on its own axis while revolving around the planet.

[0029] By designing a fixed gear ratio (e.g., 2:1) between the internal gear ring 510 and the driven gear 520, it is possible to achieve a 180-degree rotation of the driven gear 520 during the rotation of the rotary table 300 by 90 degrees (one station), thereby driving the chuck and nut to complete a precise rotation.

[0030] To ensure fast and reliable clamping, the clamping part of the self-rotating chuck 400 preferably adopts a pneumatic three-jaw chuck or a spring chuck.

[0031] Pneumatic three-jaw chuck: By connecting compressed air, the wedge mechanism inside the chuck is driven to make the three jaws move radially in sync, achieving automatic centering and clamping. It operates quickly and has a large clamping force.

[0032] Spring collets: These collets utilize their own elastic deformation and the conical surface of an external drive (such as a pull rod) to achieve clamping and releasing. They offer high clamping accuracy and a large clamping contact surface, making them suitable for high-precision applications.

[0033] Using these two mature clamping elements enables fast, highly repeatable, and reliable clamping of nuts, providing a solid foundation for high-quality chamfering.

[0034] The chamfering actuator 700 is the part that directly performs the cutting function. Each mechanism includes a tool holder 710 mounted on the frame 100. A spindle motor 720 is mounted on the tool holder 710 via a mounting plate, and a dedicated chamfering tool 730 is mounted at the front end of its output shaft. A feed drive unit 740 is connected to the tool holder 710 and is used to drive the entire tool holder 710, spindle motor 720, and chamfering tool 730 to move horizontally toward or away from the rotating chuck 400.

[0035] Machining process: When the self-rotating chuck 400 holding the nut rotates to the chamfering position and stops, the spindle motor 720 starts, driving the chamfering cutter 730 to rotate at high speed. Subsequently, the feed drive unit 740 pushes the entire actuator forward, and after completing the chamfering cut, it quickly retracts to wait for the next work cycle.

[0036] The feed drive unit 740 can be a pneumatic cylinder, a hydraulic cylinder, or an electric lead screw slide. Pneumatic cylinders are suitable for scenarios with fast cycle times and low cutting forces; hydraulic cylinders have high output force and smooth operation; electric lead screw slides offer the highest positioning accuracy and are easy to use for precise feed depth control.

[0037] The unloading mechanism 800 includes a rotary motor 810 fixed to the frame 100 and a lever 820. One end of the lever 820 is fixed to the output shaft of the rotary motor 810. When the nut that has been processed rotates to the unloading position and the self-rotating chuck 400 is released, the rotary motor 810 starts, driving the lever 820 to rotate, and its other end sweeps across the chuck position, knocking the nut off.

[0038] To further guide the nuts, a material drop chute is set up next to the unloading station.

[0039] After the chuck releases the workpiece, the rotary motor 810 drives the lever 820 to rotate. The free end of the lever 820, through its rotational motion, pulls the nut from the clamping position, causing it to fall into the discharge chute.

[0040] And guide them to slide into the collection box in an orderly manner to avoid scattering them everywhere.

[0041] It should be noted that, in this embodiment, the intermittent drive mechanism 200 is crucial for ensuring the precise indexing of the rotary table 300. It can be a stepper motor, a servo motor, or a combination of a conventional motor and a cam divider.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A nut double-sided chamfering processing equipment, characterized in that, include frame; An intermittent drive mechanism is fixed to the frame; A rotating disk is horizontally positioned and connected to the output shaft of the intermittent drive mechanism, and is driven by the intermittent drive mechanism to rotate intermittently around a central axis perpendicular to the bottom surface; Multiple rotating clamps are evenly distributed circumferentially on the revolution disk; A rotation drive mechanism is used to drive the rotation chuck to rotate when the orbital disk rotates intermittently. A feeding mechanism for feeding the rotating chuck located at the feeding station; The chamfering actuator is provided in two sets. Both sets of the chamfering actuator are mounted on the frame and located on the same side of the rotary table. They are used to chamfer the end face of the nuts held by the rotating chucks at the first chamfering station and the second chamfering station, respectively. A feeding mechanism for removing the nut from the rotating chuck located at the feeding station; The intermittent rotating stations of the rotary table sequentially include the loading station, the first chamfering station, the second chamfering station, and the unloading station; and the self-rotation drive mechanism is configured to drive the self-rotating chuck to rotate 180 degrees when the rotary table rotates one station.

2. The nut double-sided chamfering processing equipment according to claim 1, characterized in that, The number of rotating chucks is four, each corresponding to one of the four workstations.

3. The nut double-sided chamfering processing equipment according to claim 1, characterized in that, The self-rotation drive mechanism includes: A fixed internal gear ring is fixedly installed on the frame, and its central axis coincides with the rotation axis of the rotary disk; Multiple driven gears, the number of which is the same as the number of the rotating chucks, and each driven gear is coaxially and fixedly connected to one of the rotating chucks, and is rotatably connected to the revolution disk; All of the driven gears mesh with the fixed internal gear ring; when the planetary disk rotates, the driven gears are constrained by the fixed internal gear ring and thus rotate.

4. The nut double-sided chamfering processing equipment according to claim 1, characterized in that, The clamping part of the rotating chuck is a pneumatic three-jaw chuck or a spring chuck.

5. The nut double-sided chamfering processing equipment according to claim 1, characterized in that, The chamfering actuator includes: The tool holder is mounted on the frame; The spindle motor is mounted on the tool holder; A chamfering tool is connected to the output shaft of the main spindle motor; The feed drive component is connected to the tool holder and is used to drive the tool holder, the spindle motor and the chamfering tool to move horizontally toward or away from the rotating chuck.

6. The nut double-sided chamfering processing equipment according to claim 5, characterized in that, The feed drive component is a cylinder, a hydraulic cylinder, or an electric lead screw slide.

7. The nut double-sided chamfering processing equipment according to claim 1, characterized in that, The unloading mechanism includes a rotary motor and a lever. The rotary motor is fixed to the frame, and one end of the lever is fixed to the output shaft of the rotary motor. When the rotary motor rotates, it drives the other end of the lever to rotate to the unloading station and removes the nut from the self-rotating chuck.

8. The nut double-sided chamfering processing equipment according to claim 7, characterized in that, A material discharge chute is provided next to the material unloading station.

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