Automatic thread rolling machine for external threads of bolt body

Abstract

The utility model relates to the technical field of thread rolling machines, and provides a bolt body external thread automatic thread rolling machine which comprises an equipment frame and a pair of thread rolling mechanisms, the thread rolling mechanisms are both fixed to the surface of the equipment frame, a reference seat is fixed to the surface of the equipment frame, and a supporting assembly is arranged in the equipment frame. The cooling recovery assembly is arranged on the thread rolling mechanism and the equipment frame, the supporting assembly comprises a pair of rectangular grooves, the rectangular grooves are formed in the surface of the equipment frame, driving lead screws are rotationally connected into the rectangular grooves, moving frames are slidably connected into the rectangular grooves, and the moving frames are slidably connected with the inner bottom faces of the rectangular grooves. By means of the technical scheme, the technical problems that in the prior art, the surface of an unmachined bolt is smooth, friction force and positioning support provided by a thread groove are lacked, the situation that in the prior art, up-down swing is prone to occurring, the swing directly leads to continuous deviation of the position of the bolt in the thread rolling process, and the machining quality of external threads of the bolt is seriously affected are solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of thread rolling machine technology, and more specifically, to an automatic thread rolling machine for external threads of bolts. Background Technology

[0002] In today's booming modern machinery manufacturing industry, thread rolling machines, as a key multi-functional cold extrusion forming machine tool, play an irreplaceable role. Their working range is wide, enabling them to perform diverse processing operations on various workpieces in a cold environment with precise and controllable rolling pressure. This includes thread rolling, straight-line rolling, and tapered rolling; rolling of spur gears, helical gears, and helical spline gears; straightening; diameter reduction; burnishing; and forming rolling of various complex shapes, laying the foundation for constructing precision and durable mechanical parts.

[0003] In the machining of external threads on bolts, existing thread rolling processes generally employ an operation mode where the bolt is placed on a support frame. During operation, the thread rolling wheel moves towards the bolt until the surfaces of the two are in contact, and then drives the thread rolling wheel to rotate at high speed, utilizing the relative motion between the thread rolling wheel and the bolt to achieve thread rolling. However, this traditional technology has significant drawbacks. The surface of the unmachined bolt is smooth, lacking the friction and positioning support provided by the thread groove. When the thread rolling wheel applies strong extrusion pressure, the end of the bolt furthest from the thread rolling wheel, lacking effective constraint, is prone to swaying up and down. This swaying directly causes the bolt's position to continuously shift during the thread rolling process, making it difficult to guarantee thread rolling accuracy. Key parameters such as thread depth and pitch deviate significantly, seriously affecting the machining quality of the external threads on the bolt, resulting in a high defect rate, wasting raw materials, and increasing production costs. At the same time, the instability of the position also greatly interferes with the continuity and stability of the thread rolling process, hindering the smooth progress of automated production processes and failing to meet the stringent requirements of modern manufacturing for efficient, high-precision, and large-scale production. Therefore, developing an innovative automatic thread rolling machine to effectively solve the problem of positional misalignment during bolt thread rolling and improve the quality and stability of thread rolling has become a key technological bottleneck that urgently needs to be overcome in the field of machinery manufacturing. It is of great significance for promoting industrial upgrading and improving production efficiency. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide an automatic thread rolling machine for external threads of bolts, which solves the technical problem that in the prior art, the surface of unprocessed bolts is smooth and lacks the friction and positioning support provided by the thread groove, making them prone to up-and-down swinging. This swinging directly causes the bolt to continuously shift its position during the thread rolling process, seriously affecting the processing quality of the external threads of the bolt.

[0005] According to one aspect, at least one embodiment of this disclosure provides an automatic thread rolling machine for external threads of bolts, comprising:

[0006] The equipment frame and a pair of thread rolling mechanisms are both fixed to the surface of the equipment frame;

[0007] A reference base and a support assembly, wherein the reference base is fixed to the surface of the equipment frame and the support assembly is disposed inside the equipment frame;

[0008] A cooling recovery assembly is disposed on the thread rolling mechanism and the equipment frame;

[0009] The support assembly includes a pair of rectangular slots, each of which is formed on the surface of the equipment frame. A drive screw is rotatably connected to each rectangular slot, and a movable frame is slidably connected to each rectangular slot. The movable frame is slidably connected to the bottom surface of the rectangular slot.

[0010] As a further technical solution, a rotating frame is rotatably connected inside the movable frame, and a pair of springs are provided on both opposite end faces inside the rotating frame. One end of each spring is connected to a clamping frame, and a pair of drive motors are provided at the bottom of the equipment frame. Both the output end of the drive motor and one end of the drive screw are provided with transmission gears.

[0011] As a further technical solution, the cooling recovery assembly includes a discharge port, which is opened on the surface of the equipment frame and located below the reference base. A discharge hood is provided at the bottom of the equipment frame.

[0012] As a further technical solution, the bottom surface of the discharge hood is provided with a separation hole, and the side end face of the equipment frame is provided with a pair of sliding grooves. A collection box is slidably inserted into the sliding grooves, and the side end face of the collection box is sealed and fitted to the discharge hood.

[0013] As a further technical solution, a centrifugal fan is provided on the side surface of the collection box, a water pipe is fixedly connected to the top of the thread rolling mechanism, and a nozzle is provided at one end of the water pipe, with the nozzle located above the reference base.

[0014] As a further technical solution, the bottom surface of the discharge hood is an inclined structural surface, and the inner bottom surface of the discharge hood has a wavy convex structure.

[0015] As a further technical solution, a baffle is provided on the surface of the equipment rack, and the baffle is located around the periphery of the discharge port.

[0016] As a further technical solution, the clamping frame has an arc-shaped transition structure, and one end of the clamping frame has a trumpet-shaped opening structure.

[0017] As a further technical solution, the transmission gear adopts a bevel gear structure.

[0018] As a further technical solution, a telescopic cover is connected between the rectangular groove and the movable frame.

[0019] The beneficial effects of the embodiments disclosed herein are as follows:

[0020] 1. In this disclosure, a support assembly is provided. Through the interaction of structures such as the drive screw, the moving frame, the rotating frame, the spring, the clamping frame, and the drive motor, the stud can be tightly fitted in the middle of the thread rolling mechanism, and the stud can rotate and roll during thread rolling. There are two moving frames, which can fix both ends or one end of the stud at the same time. In conjunction with the drive screw, the thread rolling movement is controlled, resulting in a stable thread rolling effect.

[0021] 2. In this disclosure, a cooling recovery component is provided. Through the interaction of structures such as the discharge hood, separation hole, collection box, centrifugal fan and nozzle, the coolant and waste chips can be collected and the coolant can be separated. The coolant can be collected separately and reused, which has a good recovery and separation effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0024] Figure 2 This is an isometric drawing of the present disclosure;

[0025] Figure 3 This is an isometric sectional view of the present disclosure;

[0026] Figure 4 This is another isometric sectional view of this disclosure;

[0027] Figure 5 This is yet another isometric sectional view from which this disclosure is made;

[0028] In the diagram: 1. Equipment frame; 2. Thread rolling mechanism; 3. Reference base; 4. Support assembly; 4-1. Rectangular groove; 4-2. Drive screw; 4-3. Moving frame; 4-4. Rotating frame; 4-5. Spring; 4-6. Clamping frame; 4-7. Drive motor; 4-8. Transmission gear; 5. Cooling and recovery assembly; 5-1. Discharge port; 5-2. Discharge hood; 5-3. Separation hole; 5-4. Slide chute; 5-5. Collection box; 5-6. Centrifugal fan; 5-7. Water pipe; 5-8. Nozzle; 5-9. Concentrating hood; 6. Baffle; 7. Telescopic hood. Detailed Implementation

[0029] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0032] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] like Figures 1-5 As shown, it illustrates an automatic bolt external thread rolling machine according to an embodiment of the present disclosure, comprising:

[0036] The equipment frame 1 and a pair of thread rolling mechanisms 2 are fixed to the surface of the equipment frame 1;

[0037] The reference base 3 is fixed to the surface of the equipment rack 1, and the support assembly 4 is disposed inside the equipment rack 1.

[0038] Cooling recovery component 5 is mounted on the thread rolling mechanism 2 and the equipment frame 1.

[0039] The support component 4 includes a pair of rectangular slots 4-1, both of which are formed on the surface of the equipment frame 1. A drive screw 4-2 is rotatably connected inside the rectangular slots 4-1. A movable frame 4-3 is slidably connected inside the rectangular slots 4-1 and is slidably connected to the bottom surface inside the rectangular slots 4-1. A rotating frame 4-4 is rotatably connected inside the movable frame 4-3. A pair of springs 4-5 are provided on both opposite end faces inside the rotating frame 4-4. One end of each spring 4-5 is connected to a clamping frame 4-6. A pair of drive motors 4-7 are provided at the bottom of the equipment frame 1. A transmission gear 4-8 is provided at the output end of the drive motors 4-7 and at one end of the drive screw 4-2.

[0040] In some examples, a support assembly 4 is designed to provide auxiliary support for bolts and studs. Two rectangular slots 4-1 are opened on the surface of the equipment frame 1. A drive screw 4-2 and a moving frame 4-3 are installed in the rectangular slots 4-1. The drive screw 4-2 can control the movement of the moving frame 4-3. A drive motor 4-7 is installed at the bottom of the equipment frame 1. A transmission gear 4-8 is installed at the output end of the drive motor 4-7 and at one end of the drive screw 4-2. The drive screw 4-2 can be rotated by the drive motor 4-7. A rotating frame 4-4 is rotatably connected to the top of the moving frame 4-3. Springs 4-5 are installed at opposite ends of the rotating frame 4-4. One end of the spring 4-5 is connected to a support frame. Two clamping frames 4-6 can clamp the stud in the middle by the elastic force of the springs 4-5. The rotating frame 4-4 can rotate in conjunction with the stud during the thread rolling process. The drive screw 4-2 can control the movement.

[0041] like Figures 1-5 As shown, this embodiment proposes a cooling recovery assembly 5, which includes an outlet 5-1. The outlet 5-1 is opened on the surface of the equipment frame 1 and is located below the reference base 3. A discharge hood 5-2 is provided at the bottom of the equipment frame 1. A separation hole 5-3 is opened on the bottom surface of the discharge hood 5-2. A pair of sliding grooves 5-4 are opened on the side end face of the equipment frame 1. A collection box 5-5 is slidably inserted into the sliding grooves 5-4. The side end face of the collection box 5-5 is sealed and fitted with the discharge hood 5-2. A centrifugal fan 5-6 is provided on the side surface of the collection box 5-5. A water pipe 5-7 is fixedly connected to the top of the thread rolling mechanism 2. A nozzle 5-8 is provided at one end of the water pipe 5-7. The nozzle 5-8 is located above the reference base 3. The bottom surface of the discharge hood 5-2 is an inclined structural surface.

[0042] In some examples, to achieve the effect of cooling while collecting and separating waste chips, a cooling recovery component 5 is designed. A discharge port 5-1 is provided on the surface of the equipment frame 1 for dropping waste chips and coolant downwards. A discharge hood 5-2 is provided at the bottom of the equipment frame 1. The discharge hood 5-2 has a single-sided opening structure and a separation hole 5-3 is provided on the bottom surface of the discharge hood 5-2 to separate the incoming waste chips and coolant. Two sliding grooves 5-4 are provided at the bottom of the equipment frame 1. A collection box 5-5 is inserted into the sliding groove 5-4. The collection box 5-5 is connected to the discharge hood 5-2 and can receive waste chips. A centrifugal fan 5-6 is provided on one side of the collection box 5-5, which can generate suction at the discharge port 5-1. A water pipe 5-7 is installed on the top of one of the thread rolling mechanisms 2. A nozzle 5-8 is provided at one end of the water pipe 5-7. The water pipe 5-7 can be connected to a water supply device, which can spray coolant onto the stud through the nozzle 5-8 for cooling.

[0043] For example, such as Figure 5 As shown, the inner bottom surface of the discharge hood 5-2 has a wavy, raised structure.

[0044] In some examples, the wavy raised structure can reduce the impact of the coolant flowing down, ensuring that all the separation holes 5-3 are discharged.

[0045] For example, such as Figure 1 As shown, a baffle 6 is provided on the surface of the equipment frame 1, and the baffle 6 is located around the periphery of the outlet 5-1.

[0046] In some examples, a baffle 6 is provided to ensure that all waste chips can enter the discharge port 5-1.

[0047] For example, such as Figure 3 As shown, the clamping frame 4-6 has an arc-shaped transition structure, and one end of the clamping frame 4-6 has a trumpet-shaped opening structure.

[0048] In some examples, the curved transition structure allows the clamping frame 4-6 to fit against the stud surface, and the flared opening structure facilitates the insertion of the stud.

[0049] For example, such as Figure 1 As shown, transmission gears 4-8 adopt a bevel gear structure.

[0050] In some examples, the bevel gear structure enables a 90° transmission effect between the drive motor 4-7 and the drive screw 4-2.

[0051] For example, such as Figure 3 As shown, a telescopic cover 7 is connected between the rectangular groove 4-1 and the movable frame 4-3.

[0052] In some examples, the telescopic shield 7 can prevent coolant and scrap from entering the rectangular slot 4-1.

[0053] When processing is required, insert the stud into the clamping frame 4-6, start the drive screw 4-2, and clamp the clamping frame 4-6 onto both ends of the stud. Start the thread rolling mechanism 2 to move towards the stud for thread rolling. During thread rolling, the rotating frame 4-4 rotates within the moving frame 4-3, while simultaneously driving the two drive screws 4-2 to control the movement of the stud. After completion, remove the thread rolling mechanism 2. The waste generated during the thread rolling process falls downward through the discharge port 5-1. The nozzle 5-8 sprays out coolant, and the coolant and waste enter the discharge hood 5-2. The coolant is separated through the separation hole 5-3, and the waste enters the collection box 5-5. The centrifugal fan 5-6 is kept running to maintain the suction effect and enhance the collection of waste. The collection box 5-5 can slide outward in the chute 5-4 for cleaning.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. An automatic thread rolling machine for external bolt threads, characterized in that, include: The equipment frame (1) and a pair of thread rolling mechanisms (2) are fixed to the surface of the equipment frame (1); A reference base (3) and a support assembly (4) are provided, wherein the reference base (3) is fixed to the surface of the equipment rack (1) and the support assembly (4) is disposed inside the equipment rack (1); Cooling recovery assembly (5), the cooling recovery assembly (5) is disposed on the thread rolling mechanism (2) and the equipment frame (1); The support component (4) includes a pair of rectangular slots (4-1), both of which are formed on the surface of the equipment frame (1). A drive screw (4-2) is rotatably connected inside the rectangular slot (4-1), and a movable frame (4-3) is slidably connected inside the rectangular slot (4-1). The movable frame (4-3) is slidably connected to the bottom surface inside the rectangular slot (4-1).

2. The automatic thread rolling machine for external bolt threads according to claim 1, characterized in that, A rotating frame (4-4) is rotatably connected inside the movable frame (4-3). A pair of springs (4-5) are provided on both opposite end faces inside the rotating frame (4-4). One end of each spring (4-5) is connected to a clamping frame (4-6). A pair of drive motors (4-7) are provided at the bottom of the equipment frame (1). A transmission gear (4-8) is provided at the output end of the drive motor (4-7) and at one end of the drive screw (4-2).

3. The automatic thread rolling machine for external bolt threads according to claim 1, characterized in that, The cooling recovery assembly (5) includes a discharge port (5-1), which is opened on the surface of the equipment frame (1) and located below the reference base (3). A discharge hood (5-2) is provided at the bottom of the equipment frame (1).

4. The automatic thread rolling machine for external bolt threads according to claim 3, characterized in that, The bottom surface of the discharge hood (5-2) is provided with a separation hole (5-3), and the side end face of the equipment frame (1) is provided with a pair of sliding grooves (5-4). A collection box (5-5) is slidably inserted into the sliding groove (5-4), and the side end face of the collection box (5-5) is sealed and fitted to the discharge hood (5-2).

5. An automatic thread rolling machine for external bolt threads according to claim 4, characterized in that, A centrifugal fan (5-6) is provided on the side surface of the collection box (5-5), and a water pipe (5-7) is fixedly connected to the top of the thread rolling mechanism (2). A nozzle (5-8) is provided at one end of the water pipe (5-7), and the nozzle (5-8) is located above the reference base (3).

6. The automatic thread rolling machine for external bolt threads according to claim 3, characterized in that, The bottom surface of the discharge hood (5-2) is an inclined structure surface, and the inner bottom surface of the discharge hood (5-2) has a wavy convex structure.

7. An automatic thread rolling machine for external bolt threads according to claim 3, characterized in that, The surface of the equipment rack (1) is provided with a baffle (6), which is located around the periphery of the outlet (5-1).

8. An automatic thread rolling machine for external bolt threads according to claim 2, characterized in that, The clamping frame (4-6) has an arc-shaped transition structure, and one end of the clamping frame (4-6) has a flared opening structure.

9. An automatic thread rolling machine for external bolt threads according to claim 2, characterized in that, The transmission gears (4-8) adopt a bevel gear structure.

10. An automatic thread rolling machine for external bolt threads according to claim 1, characterized in that, A telescopic cover (7) is connected between the rectangular groove (4-1) and the movable frame (4-3).

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