Inner hexagonal self-tapping screw punching needle for automobile engine
By designing a timed oil supply and rotation ring control method on the internal hexagonal self-tapping screw punch of the automobile engine, the problems of lubricant splashing and precise lubrication are solved, thereby improving the service life of the punch and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-31
AI Technical Summary
In the existing technology, traditional spraying or oil immersion lubrication methods cause lubricant to splash during the stamping process of the internal hexagonal self-tapping screw punch in automobile engines, resulting in serious waste and difficulty in accurately reaching the friction interface, thus reducing the service life of the punch.
A self-tapping screw punch for automotive engines was designed. It connects to an external oil supply line via an oil line interface for timed oil supply. The lubricating oil is directly sprayed onto the friction interface. Combined with chrome plating, it reduces temperature rise. The movement of the fixed block is controlled by a rotating ring to achieve precise lubrication and reduce wear.
It enables precise spraying of lubricating oil, reduces wear, and improves the service life of punches and production continuity.
Smart Images
Figure CN224058537U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts manufacturing technology, and in particular to a punch for an internal hexagonal self-tapping screw for an automotive engine. Background Technology
[0002] The punch for the internal hexagonal self-tapping screw in the automobile engine is a key mold component for manufacturing this type of screw. Internal hexagonal self-tapping screws can be produced through a stamping mechanism.
[0003] Traditional spraying or oil immersion lubrication methods are often used in stamping to reduce the wear of the punch. However, these lubrication methods can lead to excessive lubricant splashing, which is not only wasteful but may also contaminate the workpiece surface. Furthermore, the lubricant is difficult to accurately reach the friction interface between the punch and the workpiece, which will reduce the service life of the punch during long-term stamping. Utility Model Content
[0004] The purpose of this invention is to solve the problem that in the prior art, when using punches for stamping, traditional spraying or oil immersion lubrication methods are often used to reduce the wear of the punches. However, the above lubrication methods will cause excessive lubricant to splash, which is not only wasteful but may also contaminate the surface of the workpiece. In addition, the lubricant is difficult to accurately reach the friction interface between the punch and the workpiece, which will reduce the service life of the punch during long-term stamping.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a self-tapping socket head cap screw punch for automotive engines, comprising a fixed mounting shank, a connecting shank movably connected within the fixed mounting shank, a punch head fixedly connected to the lower center of the connecting shank, an oil reservoir inside the connecting shank, and multiple evenly distributed oil injection holes at the lower end of the connecting shank. An oil passage interface is fixedly connected to the side wall of the fixed mounting shank, and an input pipe is provided between the oil passage interface and the oil reservoir. The oil passage interface is connected to an external oil supply line via a flexible hose. Oil is supplied periodically through the external oil supply line at the punching frequency. During punching, lubricating oil can directly enter the oil reservoir through the input pipe, allowing the lubricating oil to be directly sprayed onto the friction interface between the punch and the workpiece, achieving precise lubrication, reducing punching wear of the punch head, and thus improving the service life of the punch.
[0006] In a preferred embodiment, the outer periphery of the connecting handle is chrome-plated to reduce the temperature rise caused by stamping friction.
[0007] In a preferred embodiment, the fixed mounting handle is provided with a plurality of evenly distributed fixing blocks. A slider is fixedly connected to the rear end of each fixing block. The slider is slidably connected inside the fixed mounting handle. A rotating ring is rotatably connected to the bottom end of the mounting handle. A pressure pin is fixedly connected to the lower end of the slider. An oil injection hole is opened on the rotating ring corresponding to the pressure pin. The pressure pin is slidably connected inside the corresponding sliding groove. By rotating the rotating ring, the sliding groove squeezes the oil injection hole, thereby moving the fixing blocks and controlling the distance between the fixing blocks, thus achieving the function of fixing the mounting handle.
[0008] In a preferred embodiment, an adjustment box is fixedly connected to the side wall of the fixed mounting handle, a worm gear is rotatably connected inside the adjustment box, and a worm tooth is fixedly connected to the side wall of the rotating ring. The worm tooth and the worm gear mesh and drive each other, and the worm gear and worm tooth have a self-locking property, which makes the rotation drive of the rotating ring more stable.
[0009] In a preferred embodiment, the fixing blocks have multiple evenly distributed grooves on their close-to-each end faces to increase the contact friction with the connecting handle, thereby improving the fixing stability of the connecting handle.
[0010] In a preferred embodiment, a handle is fixedly connected to the side wall of the worm, which facilitates the rotation of the worm.
[0011] In a preferred embodiment, the worm gear has uniformly distributed grooves on its outer periphery. These grooves increase the contact friction of the worm gear, making it easier to rotate the handle.
[0012] In a preferred embodiment, a connecting flange is fixedly connected to the top of the mounting handle, which serves to fix the punch.
[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0014] 1. In this utility model, the oil circuit interface is connected to the external oil supply pipeline through a hose. The external oil supply pipeline supplies oil at regular intervals during the stamping frequency. During stamping, the lubricating oil can directly enter the oil storage chamber through the input pipe, so that the lubricating oil is directly sprayed on the friction interface between the punch and the workpiece, achieving precise lubrication, reducing the stamping wear of the stamping head, and thus improving the service life of the punch.
[0015] 2. This utility model can rotate the rotating ring to make the sliding groove squeeze the oil injection hole, thereby driving the fixed block to move, thereby controlling the distance between the fixed blocks and thus achieving the function of fixing the connecting handle. It can quickly replace the connecting handle and the stamping head, and the replacement speed is fast, which can improve the continuity of stamping production. Attached Figure Description
[0016] Figure 1 A three-dimensional structural schematic diagram of a self-tapping socket head cap screw punch for an automobile engine provided by this utility model;
[0017] Figure 2 A three-dimensional structural schematic diagram of a self-tapping socket head cap screw punch for an automobile engine provided by this utility model;
[0018] Figure 3 A cross-sectional view of a self-tapping socket head cap screw punch for an automobile engine provided by this utility model;
[0019] Figure 4 A partial structural schematic diagram of a self-tapping socket head cap screw punch for an automobile engine provided by this utility model;
[0020] Figure 5 This utility model provides a schematic diagram of the fixing block of a self-tapping socket screw punch for an automotive engine.
[0021] Legend:
[0022] 1. Fixed mounting handle; 2. Connecting flange; 3. Rotating ring; 4. Adjusting box; 5. Rotating handle; 6. Oil circuit interface; 7. Stamping head; 8. Connecting handle; 9. Oil storage chamber; 10. Input pipe; 11. Fixing block; 12. Oil injection hole; 13. Pressure pin; 14. Sliding groove; 15. Worm gear; 16. Worm tooth; 17. Slider. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-5This utility model provides a technical solution: a self-tapping socket head cap screw punch for automotive engines, including a fixed mounting handle 1, a connecting handle 8 movably connected inside the fixed mounting handle 1, a punching head 7 fixedly connected to the lower middle part of the connecting handle 8, an oil storage chamber 9 inside the connecting handle 8, and multiple evenly distributed oil spray holes 12 at the lower end of the connecting handle 8. An oil passage interface 6 is fixedly connected to the side wall of the fixed mounting handle 1, and an input pipe 10 is provided between the oil passage interface 6 and the oil storage chamber 9. The oil passage interface 6 is connected to an external oil supply pipeline through a hose. Oil is supplied periodically through the external oil supply pipeline at the punching frequency. During punching, lubricating oil can directly enter the oil storage chamber 9 through the input pipe 10, so that the lubricating oil is directly sprayed on the friction interface between the punch and the workpiece, achieving precise lubrication, reducing the punching wear of the punching head 7, and thus improving the service life of the punch.
[0025] like Figure 1-5 As shown, the outer periphery of the connecting handle 8 is chrome-plated to reduce the temperature rise caused by stamping friction.
[0026] like Figure 1-5 As shown, multiple evenly distributed fixing blocks 11 are arranged inside the fixed mounting handle 1. A slider 17 is fixedly connected to the rear end of the fixing block 11. The slider 17 is slidably connected inside the fixed mounting handle 1. A rotating ring 3 is rotatably connected to the bottom end of the connecting handle 8. A pressure pin 13 is fixedly connected to the lower end of the slider 17. An oil injection hole 12 is opened at the position of the rotating ring 3 corresponding to the pressure pin 13. The pressure pin 13 is slidably connected inside the sliding groove 14 at the corresponding position. By rotating the rotating ring 3, the sliding groove 14 can be squeezed against the oil injection hole 12, thereby driving the fixing block 11 to move, thereby controlling the distance between the fixing blocks 11, and thus realizing the function of fixing the connecting handle 8.
[0027] like Figure 1-5 As shown, an adjustment box 4 is fixedly connected to the side wall of the fixed mounting handle 1. A worm gear 15 is rotatably connected inside the adjustment box 4. A worm tooth 16 is fixedly connected to the side wall of the rotating ring 3. The worm tooth 16 meshes with the worm gear 15 for transmission. The worm gear 15 and the worm tooth 16 have a self-locking property, which makes the rotation drive of the rotating ring 3 more stable.
[0028] like Figure 1-5 As shown, the fixing blocks 11 have multiple evenly distributed grooves on their close-to-each end faces to increase the contact friction with the connecting handle 8, thereby improving the fixing stability of the connecting handle 8.
[0029] like Figure 1-5 As shown, a handle 5 is fixedly connected to the side wall of the worm 15, which facilitates the rotation of the worm 15.
[0030] like Figure 1-5 As shown, the worm 15 has evenly distributed grooves on its outer periphery. These grooves increase the contact friction of the worm 15, making it easier to rotate the handle 5.
[0031] like Figure 1-5 As shown, a connecting flange 2 is fixedly connected to the top of the fixed mounting handle 1. The connecting flange 2 serves to fix the punch.
[0032] Working principle: During stamping, the oil circuit interface 6 is connected to the external oil supply line through a hose. The external oil supply line supplies oil at regular intervals during the stamping frequency. When the stamping is reduced, the external oil supply line supplies oil, and the lubricating oil enters the oil storage chamber 9 through the input pipe 10. It is then sprayed directly onto the friction interface between the punch and the workpiece through the oil spray hole 12 to achieve precise lubrication, reduce the stamping wear of the stamping head 7, and thus improve the service life of the punch.
[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. An internal hex self-tapping screw pilot for an automotive engine, characterized by, The utility model relates to a fixed installation handle (1), the fixed installation handle (1) inside movable connection has connecting handle (8), the connecting handle (8) lower end middle part fixed connection has punch head (7), the connecting handle (8) inside is equipped with oil storage cavity (9), the connecting handle (8) lower end is equipped with multiple even distribution oil injection hole (12), the fixed installation handle (1) side wall fixed connection has oil circuit interface (6), oil circuit interface (6) with oil storage cavity (9) between being provided with input pipe (10).
2. The hexagon socket self-tapping screw punch pin for an automobile engine according to claim 1, characterized in that: The connecting handle (8) is chrome-plated.
3. The hexagon socket self-tapping screw punch pin for an automobile engine according to claim 1, characterized in that: The fixed installation handle (1) is provided with multiple evenly distributed fixed blocks (11), the rear end of the fixed block (11) is fixedly connected with a sliding block (17), the sliding block (17) is slidingly connected in the fixed installation handle (1), the bottom end of the connecting handle (8) is rotatably connected with a rotating ring (3), the lower end of the sliding block (17) is fixedly connected with a pressure pin (13), the rotating ring (3) is provided with an oil injection hole (12) corresponding to the pressure pin (13), and the pressure pin (13) is slidingly connected in a sliding groove (14) corresponding thereto.
4. The hexagon socket self-tapping screw punch pin for an automobile engine according to claim 3, characterized in that: The fixed installation handle (1) is provided with an adjusting box (4) on the side wall, the adjusting box (4) is rotatably connected with a worm (15), the side wall of the rotating ring (3) is fixedly connected with a worm gear (16), and the worm gear (16) is in meshing transmission connection with the worm (15).
5. The hexagon socket self-tapping screw punch pin for an automobile engine according to claim 3, characterized in that: Multiple evenly distributed grooves are formed in the end faces of the fixed blocks (11) close to each other.
6. The hexagon socket self-tapping screw punch pin for an automobile engine according to claim 4, characterized in that: The side wall of the worm (15) is fixedly connected with a rotating handle (5).
7. The hexagon socket self-tapping screw pin for automobile engine according to claim 6, characterized in that: The worm (15) is provided with evenly distributed grooves on the outer periphery.
8. The hexagon socket self-tapping screw punch pin for an automobile engine according to claim 1, characterized in that: The fixed installation handle (1) is fixedly connected with a connecting flange (2) on the top.