A screw thread forming device

Abstract

This utility model provides a screw thread forming device, belonging to the field of screw processing technology. The screw thread forming device includes a worktable, a clamping and pushing mechanism, and an end forming mechanism. The clamping and pushing mechanism includes a first hydraulic cylinder located on the worktable. A drive frame is fixed to the piston rod of the first hydraulic cylinder, and a first drive motor is mounted on the drive frame. A clamping gripper for clamping and fixing the screw is fixed to the output shaft of the first drive motor. The clamping gripper has two clamping holes. This utility model has the advantage of improving the quality of screw processing.

Description

Technical Field

[0001] This utility model belongs to the field of screw processing technology, specifically a screw thread forming device. Background Technology

[0002] Screws are frequently used in various engineering and machinery manufacturing processes and have a wide range of applications. The production process of screws involves multiple steps. In the forming process, the metal rod needs to be placed on a thread cutting device for thread forming. In the existing screw forming process, most forming devices only form the surface of the screw rod and ignore the local forming at both ends of the screw, resulting in the end faces of the screw being too rough and affecting the processing quality of the screw. Summary of the Invention

[0003] The purpose of this utility model is to address the aforementioned problems in existing technologies and propose a solution. A screw thread forming device has the advantage of improving the processing quality of screws.

[0004] The objective of this utility model can be achieved through the following technical solution: a screw thread forming device, comprising a worktable, a clamping and pushing mechanism, and an end forming mechanism. The clamping and pushing mechanism includes a first hydraulic cylinder located on the worktable. A drive frame is fixed on the piston rod of the first hydraulic cylinder. A first drive motor is mounted on the drive frame. A clamping gripper for clamping and fixing the screw is fixed on the output shaft of the first drive motor. The clamping gripper has two clamping holes. The end forming mechanism includes a processing box, a lifting motor installed at the bottom of the processing box, a support plate fixed on the lifting rod of the lifting motor, a support seat on the support plate, and a limiting slot for limiting and fixing the other end of the screw on the support seat; a second hydraulic cylinder is installed at the top of the processing box, a lifting frame is fixed on the piston rod of the second hydraulic cylinder, a second drive motor is symmetrically installed on the lifting frame, a forming cylinder is drivenly connected to the output shaft of the second drive motor, a forming groove is opened at the bottom of the forming cylinder, and a thread forming cutter is provided in the forming groove for thread forming the end of the screw.

[0005] Preferably, the clamping gripper includes a clamping frame, a controller, and two symmetrically arranged gripper pieces. The clamping frame is connected to the two gripper pieces, and the controller for controlling the two gripper pieces to clamp or open is installed on the clamping frame.

[0006] Preferably, a detection box is installed on one side of the processing box, and a detector is installed on the inner wall of the processing box. The detector is connected to the detection box through a connector, and the height of the detector is the same as the height of one end of the screw.

[0007] Preferably, it also includes a robotic arm, which clamps and transports the screw into the clamping hole of the gripper.

[0008] Preferably, the second drive motor, the matching screw to be processed, the matching forming cylinder, and the matching limiting slot are all coaxially arranged.

[0009] Compared with the prior art, the advantages of this utility model are: by setting up a clamping and pushing mechanism, this structure is conducive to automatic and fast thread forming of the screw, resulting in higher processing efficiency. At the same time, the fully automated design eliminates the need for manual labor and has a high degree of automation. Attached Figure Description

[0010] Figure 1 This is a front sectional view of the present invention.

[0011] Figure 2 This is a structural diagram of the clamping and propulsion mechanism in this utility model.

[0012] Figure 3 This is a structural diagram of the mid-end forming mechanism of this utility model.

[0013] Figure 4 This is a structural diagram of the clamping gripper in this utility model.

[0014] In the diagram, 21 is the first hydraulic cylinder; 22 is the drive frame; 23 is the first drive motor; 241 is the clamping hole; 242 is the clamping frame; 243 is the controller; 244 is the gripper; 3 is the processing box; 31 is the lifting motor; 32 is the support plate; 33 is the support base; 34 is the limit slot; 35 is the second hydraulic cylinder; 36 is the lifting frame; 37 is the second drive motor; 38 is the forming cylinder; 381 is the forming groove; 382 is the thread forming knife; 41 is the detection box; 42 is the detector; and 5 is the robotic arm. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0016] like Figures 1 to 4 As shown, a screw thread forming device includes a worktable, a clamping and pushing mechanism, and an end forming mechanism. The clamping and pushing mechanism includes a first hydraulic cylinder 21 located on the workbench. A drive frame 22 is fixed on the piston rod of the first hydraulic cylinder 21. A first drive motor 23 is mounted on the drive frame 22. A clamping gripper for clamping and fixing the screw is fixed on the output shaft of the first drive motor 23. The clamping gripper has two clamping holes 241. The end forming mechanism includes a processing box 3, a lifting motor 31 installed at the bottom of the processing box 3, a support plate 32 fixed on the lifting rod of the lifting motor 31, a support seat 33 on the support plate 32, and a limiting slot 34 for limiting and fixing the other end of the screw on the support seat 33; a second hydraulic cylinder 35 is installed at the top of the processing box 3, a lifting frame 36 is fixed on the piston rod of the second hydraulic cylinder 35, a second drive motor 37 is symmetrically installed on the lifting frame 36, a forming cylinder 38 is connected to the output shaft of the second drive motor 37, a forming groove 381 is opened at the bottom of the forming cylinder 38, and a thread forming cutter 382 is provided in the forming groove 381 for thread forming of the end of the screw.

[0017] It also includes a robotic arm 5, which clamps and transports the screw into the clamping hole 241 of the gripper. In this utility model, the robotic arm 5 is prior art.

[0018] Using the above structure, the robotic arm 5 grips and lowers the conveyed screw, which is then held and fixed by the gripping hand. The first hydraulic cylinder 21 is activated, moving the gripping hand towards the processing box 3 to a predetermined position. The first drive motor 23 rotates the gripping hand, making the screw on the gripping hand perpendicular to the horizontal plane. The lifting motor 31 lifts the limiting slot 34 on the support base 33, inserting one end of the screw into the limiting slot 34 for limiting and fixing. Subsequently, the second hydraulic cylinder 35 lowers the lifting frame 36, causing the forming cylinder 38 on the lifting frame 36 to descend to a position directly below it. The second drive motor 37 is activated, inserting the screw into the forming groove 381 of the forming cylinder 38. The screw is then threaded at the end by continuously rotating the thread forming cutter 382 on the inner wall of the forming cylinder 38. After one end is formed, the second hydraulic cylinder 35 lifts upwards, and the lifting motor 31 lowers downwards. Then, the first drive motor 23 rotates 180 degrees again, screwing the lower end of the screw (the one not yet threaded) to the top. This process of threading the screw end is repeated. This structure facilitates automatic and rapid threading of the screw, resulting in higher processing efficiency. Furthermore, the fully automated design eliminates the need for manual labor, achieving a high degree of automation. The inclusion of a limiting slot 34, which provides fixation during screw end forming, helps improve the quality of the screw thread forming and prevents vibration and shaking caused by the upper side of the screw rotating during forming.

[0019] Specifically, such as Figures 1 to 4As shown, the gripper includes a gripping frame 242, a controller 243, and two symmetrically arranged gripper claws 244. The gripping frame 242 is connected to the two gripper claws 244, and the controller 243 is installed on the gripping frame 242 to control the gripper claws 244 to clamp or open.

[0020] With the above structure, by setting the controller 243, it is convenient to automatically control the opening and clamping closure of the gripper 244 in real time, which facilitates the clamping of the screw.

[0021] like Figures 1 to 4 As shown, a detection box 41 is installed on one side of the processing box 3, and a detector 42 is installed on the inner wall of the processing box 3. The detector 42 is connected to the detection box 41 through a connector, and the height of the detector 42 is consistent with the height of one end of the screw. By setting up the detection box 41 and the detector 42, the detector 42 can detect the thread forming quality of the screw after the thread is formed by detecting the degree of thread forming on its surface, resulting in better detection effect.

[0022] like Figures 1 to 4 As shown, the second drive motor 37, the matching screw to be processed, the matching forming cylinder 38, and the matching limiting slot 34 are all coaxially arranged. This structural arrangement helps to improve the quality of screw thread forming.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0025] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0026] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A screw thread forming device, comprising a worktable, a clamping and pushing mechanism, and an end forming mechanism. The clamping and pushing mechanism includes a first hydraulic cylinder (21) located on the workbench. A drive frame (22) is fixed on the piston rod of the first hydraulic cylinder (21). A first drive motor (23) is mounted on the drive frame (22). A clamping gripper for clamping and fixing the screw is fixed on the output shaft of the first drive motor (23). The clamping gripper has two clamping holes (241). The end forming mechanism includes a processing box (3), a lifting motor (31) installed at the bottom of the processing box (3), a support plate (32) fixed on the lifting rod of the lifting motor (31), a support seat (33) on the support plate (32), and a limiting slot (34) for limiting and fixing the other end of the screw on the support seat (33); a second hydraulic cylinder (35) is installed at the top of the processing box (3), a lifting frame (36) is fixed on the piston rod of the second hydraulic cylinder (35), a second drive motor (37) is symmetrically installed on the lifting frame (36), a forming cylinder (38) is connected to the output shaft of the second drive motor (37), a forming groove (381) is opened at the bottom of the forming cylinder (38), and a thread forming cutter (382) is provided in the forming groove (381) for thread forming of the end of the screw.

2. The screw thread forming device according to claim 1, characterized in that, The gripper includes a gripper frame (242), a controller (243), and two symmetrically arranged gripper claws (244). The gripper frame (242) is connected to the two gripper claws (244), and the gripper frame (242) is equipped with a controller (243) for controlling the gripper claws (244) to grip or open.

3. The screw thread forming device according to claim 1, characterized in that, A detection box (41) is installed on one side of the processing box (3). A detector (42) is installed on the inner wall of the processing box (3). The detector (42) is connected to the detection box (41) through a connector, and the height of the detector (42) is consistent with the height of one end of the screw.

4. The screw thread forming device according to claim 1, characterized in that, It also includes a robotic arm (5) that clamps and transports the screw into the clamping hole (241) of the gripper.

5. The screw thread forming device according to claim 1, characterized in that, The second drive motor (37), the screw to be processed, the forming cylinder (38), and the limiting slot (34) are all coaxially arranged.

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