Groove rubbing structure of screw mold

Abstract

The utility model relates to the technical field of part machining, in particular to the technical field of machining of threaded parts. For screw machining, a thread rolling machining mode is usually adopted, and plastic deformation of materials is utilized. A screw semi-finished product produced by a known screw mold has the problems of high-temperature heating and non-uniform distribution, and the screw semi-finished product is high in hardness and a groove rubbing structure is seriously influenced by abrasion of a workpiece due to the high hardness of the screw semi-finished product under a high-temperature condition, so that the quality problems that the precision of a subsequent product is influenced and the like are solved. By means of the cam transmission part set and the push rod transmission part set, material screws can be cooled in line for a long time, the hardness of the material screws is reduced, abrasion to a screw groove rubbing structure is reduced, the precision quality of products is improved, and the service life of the device is prolonged. In addition, automation is achieved, automation is conducted orderly, the rhythm is clear, and manual intervention is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of parts processing, in particular to the technical field of threaded parts processing. Background Art

[0002] Parts machining is a technique for producing a product of a predetermined shape by modifying the shape of an object. There are many different methods for parts machining, including casting, forging, welding, turning, grinding, stamping, drilling, milling, cutting, extrusion, and other processing methods. The optimal machining method for each different part shape is also very different.

[0003] Screw processing often involves thread rolling, which exploits the plastic deformation of the material. However, semi-finished screws produced by a screw mold are known to generate high temperatures and generate uneven heat. At high temperatures, these semi-finished screws are very hard, and the threaded groove structure can be severely worn by the workpiece due to the high hardness of the semi-finished screws, thus affecting the precision and quality of subsequent products. Utility Model Content

[0004] The main purpose of the utility model is to provide a groove rubbing structure for a screw mold, so as to reduce the problem in the related art that the groove rubbing structure affects the subsequent product processing due to processing wear.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a groove rubbing structure of a screw mold is provided, including: a frame, a cam transmission group and a push rod transmission group are provided on the frame panel, the cam transmission group is engaged with the large gear through the equal-width cam gear, the large gear is engaged with the push rod transmission group through the push rod gear, and a motor is provided under the large gear.

[0006] Furthermore, only half of the large gear is provided with gear teeth, and the number of teeth of the large gear is the same as the number of teeth of the push rod gear and the equal-width cam gear.

[0007] Furthermore, the cam transmission assembly includes an equal-width cam, the outer side of the equal-width cam is tangent to the square frame, two sliders are provided on the square frame, the two sliders are passed through by the optical axis, and the equal-width cam and the equal-width cam gear are concentrically welded together.

[0008] Furthermore, the cam transmission assembly includes an equal-width cam, the outer side of the equal-width cam is tangent to the square frame, two sliders are provided on the square frame, the two sliders are passed through by the optical axis, and the equal-width cam and the equal-width cam gear are concentrically welded together.

[0009] Furthermore, a push rod gear is provided on the push rod transmission group, and the push rod gear is concentrically welded to the rotating disk. A fixed sliding column is provided on the rotating disk, and the sliding column is tangent to the waist-shaped groove. The left side of the waist-shaped groove is fixedly welded to the push rod, and the middle position of the push rod passes through the limit position block.

[0010] Furthermore, a semicircular notch is provided on the leftmost side of the push rod.

[0011] Furthermore, the equal-width cam material is 40Cr and is subjected to a modulation process.

[0012] Furthermore, a feed port is provided above the frame, a long slot is provided below the feed port, a baffle box is provided on one side of the long slot, and a storage box is provided below the baffle box.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The utility model allows the material screws to queue for a long time for cooling through the cam transmission group and the push rod transmission group, thereby reducing their hardness, reducing wear on the screw groove rubbing structure, improving the precision quality of the product, and extending the service life of the device. The entire process is automated and orderly with a clear rhythm, reducing the amount of manual work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a top view of the utility model;

[0016] Figure 2 This is the front view of the utility model;

[0017] Figure 3 This is an oblique view of the utility model;

[0018] Figure 4 This is a partial transmission view of the internal gear of the utility model;

[0019] Illustration:

[0020] A1. Frame; A2. Cam transmission unit; A3. Push rod transmission unit; 1. Processing screw; 2. Slider; 3. Optical axis; 4. Equal-width cam; 5. Square frame; 6. Thread rolling plate; 7. Push rod; 8. Position limit block; 9. Sliding column; 10. Waist groove; 11. Thin plate; 12. Motor; 13. Storage box; 14. Baffle box; 15. Feed port; 16. Long slot; 17. Large gear; 18. Equal-width cam gear; 19. Push rod gear; 20. Rotating disk. DETAILED DESCRIPTION

[0021] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0022] See also Figures 1 to 4 This embodiment provides a groove rubbing structure for a screw mold, including: a frame A1, a cam transmission group A2 and a push rod transmission group A3 are provided on the panel of the frame A1, the cam transmission group A2 is engaged with the large gear 17 through the equal-width cam gear 18, the large gear 17 is engaged with the push rod transmission group A3 through the push rod gear 19, and a motor 12 is provided under the large gear 17.

[0023] Only half of the large gear 17 is provided with gear teeth, and the number of teeth of the large gear 17 is the same as that of the push rod gear 19 and the equal width cam gear 18. When the large gear 17 rotates half a circle, the push rod gear 19 rotates exactly one circle, and the action timing of the push rod gear 19 and the equal width cam gear 18 does not overlap at all.

[0024] Cam drive assembly A2 includes a uniform-width cam 4, the outer surface of which is tangential to a square frame 5. Two sliders 2 are mounted on the square frame 5, and both sliders 2 are passed through the optical axis 3. The uniform-width cam 4 is welded concentrically to a uniform-width cam gear 18. The sliders 2 restrict the rotational freedom of the square frame 5. The thin plate 11 and the square frame 5 are fixedly connected by a connecting rod, ensuring that the motion trajectory of the thin plate 11 is square.

[0025] Push rod transmission assembly A3 is equipped with a push rod gear 19, which is welded concentrically to a rotating disk 20. A fixed slide post 9 is mounted on the rotating disk 20, tangential to a waist-shaped groove 10. The left side of the waist-shaped groove 10 is fixedly welded to the push rod 7, and the middle of the push rod 7 passes through a position limit block 8. The rotational motion of the rotating disk 20 is converted into the reciprocating motion of the push rod 7.

[0026] There is a semicircular notch on the leftmost side of the push rod 7, which facilitates the push of the push rod 7 to the processing screw 1.

[0027] The material of the constant width cam 4 is 40Cr and is modulated to increase the hardness and wear resistance of the constant width cam and extend the service life of the entire machine.

[0028] A feed port 15 is provided above the frame A1, a long slot 16 is provided below the feed port 15, a baffle box 14 is provided on one side of the long slot 16, and a storage box 13 is provided below the baffle box 14. The waiting time for processing the screw 1 is extended to allow the processed screw 1 to cool and reduce its hardness.

[0029] It should be added that a cooling pipe is provided inside the long groove 16 , through which cooling water from the outside is introduced to cool the processed screw 1 on the long groove 16 .

[0030] Working principle: Align the feed port 15 of the utility model with the discharge port of the screw mold. When the processed screw 1 falls from the feed port 15 to the long slot 16, the motor 12 drives the large gear 17 to rotate. At this time, the teeth of the large gear 17 engage with the equal-width cam gear 18. At this time, the cam transmission group A2 starts to move, and the push rod transmission group A3 does not move. The square frame 5 is restricted by the freedom of the slider 2 and cannot rotate. Under the action of the equal-width cam 4, the motion trajectory of the thin plate 11 is a square, and the thin plate 11 pushes a series of processed screws 1 downward. When the large gear 17 rotates halfway, the constant-width cam 18 completes one full rotation, and the thin plate 11 returns to its original position. The large gear 17 then begins to mesh with the push rod gear 19, causing the push rod transmission group A3 to begin operating while the cam transmission group A2 remains stationary. The rotating disk 20 and the slide post 9 on it rotate along with the push rod gear 19. The push rod 7, restrained by the position limiter 8, has only linear freedom, allowing it to push the processing screw 1 forward. The processing screw 1 deforms under the friction of the thread rolling plate 6, pushing against the baffle box 14 and then falling into the material storage box 13. The push rod 7 rotates one full rotation on the rotating disk 20 and returns to its original position. At this point, the large gear 17 has also completed one full rotation. It then meshes with the constant-width cam gear 18, entering the cycle. While waiting in the slot 16, the processing screw 1 cools, reducing its hardness and minimizing wear on the thread rolling plate 6.

[0031] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A screw die groove rubbing structure, comprising a frame (A1), wherein a cam transmission group (A2) and a push rod transmission group (A3) are provided on a panel of the frame (A1), characterized in that: The cam transmission component group (A2) is meshed with the large gear (17) through the equal-width cam gear (18), and the large gear (17) is meshed with the push rod transmission component group (A3) through the push rod gear (19). A motor (12) is provided below the large gear (17).

2. The groove rubbing structure of a screw mold according to claim 1, characterized in that: Only half of the large gear (17) is provided with gear teeth, and the number of teeth of the large gear (17) is the same as the number of teeth of the push rod gear (19) and the equal-width cam gear (18).

3. The groove rubbing structure of a screw mold according to claim 1, characterized in that: The cam transmission assembly (A2) includes an equal-width cam (4), the outer side of the equal-width cam (4) is tangent to a square frame (5), two sliders (2) are provided on the square frame (5), and the two sliders (2) are passed through by an optical axis (3). The equal-width cam (4) and the equal-width cam gear (18) are concentrically welded together.

4. The groove rubbing structure of a screw mold according to claim 1, characterized in that: The push rod transmission group (A3) is provided with a push rod gear (19), and the push rod gear (19) is welded concentrically with the rotating disk (20). The rotating disk (20) is provided with a fixed sliding column (9), and the sliding column (9) is tangent to the waist groove (10). The left side of the waist groove (10) is fixedly welded to the push rod (7), and the middle position of the push rod (7) passes through the limit position block (8).

5. The groove rubbing structure of a screw mold according to claim 1, characterized in that: The leftmost side of the push rod (7) is provided with a semicircular notch.

6. The groove rubbing structure of a screw mold according to claim 1, characterized in that: The material of the equal-width cam (4) is 40Cr.

7. According to the groove rubbing structure of a screw mold according to claim 1, a feed port (15) is provided above the frame (A1), a long groove (16) is provided below the feed port (15), a baffle box (14) is provided on one side of the long groove (16), and a storage box (13) is provided below the baffle box (14).

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