A precision cold heading forming die for a titanium material bolt head

Abstract

The utility model relates to cold heading forming die technical field, and disclose a kind of precision cold heading forming die of titanium material bolt head, solve the problem that existing cold heading die is not convenient to cool and lubricate when hex face forming, it includes lower die assembly and upper die assembly, lower die assembly is by lower die support seat, lower die body and ejector rod structure, lower die body is embedded and set in the top end of inside of lower die support seat, ejector rod is slidably inserted in lower die support seat and lower die body, upper die assembly is by upper die support seat, upper die body and plugging component structure, upper die body is embedded and set in the bottom end of inside of upper die support seat, plugging component is installed in the inside of upper die support seat and penetrates in upper die body, plugging component is by locating support plate, plugging plate, lifting limit rod, limit pad and spring structure;Through the forming die, hex face forming can be realized to bolt head, and lubrication and cooling are realized in forming process.

Description

Technical Field

[0001] This utility model belongs to the field of cold heading forming mold technology, specifically a precision cold heading forming mold for titanium bolt heads. Background Technology

[0002] Titanium bolts are typically formed using a five-station continuous cold forging structure, sequentially completing head upsetting, dome forming, hexagonal face forming, flange precision upsetting, and shank sizing. Therefore, five sets of molds need to operate simultaneously, and continuous cold forging is achieved by using a robotic arm to clamp and switch positions of the raw material. During the hexagonal face forming process, excess waste material also needs to be removed during the cold forging of the bolt head using the mold. Existing molds are not convenient for lubrication and cooling during punching, which affects the processing quality. Therefore, this application proposes a precision cold forging mold for titanium bolt heads. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a precision cold heading mold for titanium bolt heads, which effectively solves the problem that existing cold heading molds are not convenient for cooling and lubrication when forming hexagonal surfaces.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a precision cold heading forming mold for titanium bolt heads, comprising a lower mold assembly and an upper mold assembly. The lower mold assembly consists of a lower mold support base, a lower mold body, and a push rod. The lower mold body is embedded in the top end of the lower mold support base. The push rod slides through the lower mold support base and the lower mold body. The bottom end of the push rod is connected to the ejector cylinder on the cold heading machine. The upper mold assembly consists of an upper mold support base, an upper mold body, and a sealing component. The upper mold support base is connected to a hydraulic press on the cold heading machine. The upper mold body is embedded in the bottom end of the upper mold support base. The sealing component is installed inside the upper mold support base and penetrates through the upper mold body.

[0005] The sealing assembly consists of a positioning support plate, a sealing plate, a lifting limit rod, a limit plate, and a spring. The positioning support plate is welded to the inside of the upper mold support base and has several drainage holes. The lifting limit rod slides through the middle of the positioning support plate. The sealing plate is located at the top of the positioning support plate and is fixedly connected to the lifting limit rod. The limit plate is sleeved on the lifting limit rod and is fixedly connected to it. The spring is sleeved on the lifting limit rod and is located between the positioning support plate and the limit plate. An O-ring is provided on the side of the bottom end of the sealing plate.

[0006] Preferably, both the lower mold support and the lower mold body have a central hole at their center positions that is slidably connected to the push rod, and the side of the top of the lower mold support has a chamfered structure.

[0007] Preferably, the upper mold support base has an internal cavity filled with cutting fluid. A connector communicating with the internal cavity is fixedly installed at the top of one side of the upper mold support base, and a fluid supply hose is installed at the other end of the connector.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] (1) In operation, by setting up a lower mold assembly consisting of a lower mold support base, a lower mold body and an ejector rod, and an upper mold assembly consisting of an upper mold support base, an upper mold body and a sealing component, the bolt head can be formed into a hexagonal surface. By setting up a sealing component consisting of a positioning support plate, a sealing plate, a lifting limit rod, a limit plate and a spring, and filling the inner cavity with cutting fluid, the cutting fluid can be automatically released during the forming process, and the cutting fluid can be used to achieve lubrication and cooling, thereby improving the processing quality.

[0010] (2) By setting the side of the top of the lower die support base to be chamfered, it is easy to unload the waste material after punching. During the process of the five-station robot driving the screw to move laterally, the screw drives the waste material to move laterally, thereby realizing automatic unloading without the need to install other auxiliary unloading mechanisms. Attached Figure Description

[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0012] In the attached diagram:

[0013] Figure 1 This is a schematic diagram of the precision cold heading die structure for the titanium bolt head of this utility model;

[0014] Figure 2 This is a cross-sectional view of the precision cold heading die for the titanium bolt head of this utility model;

[0015] Figure 3 This is a schematic diagram of the sealing component structure of this utility model;

[0016] Figure 4 This is a flowchart illustrating the hexagonal forming process of the titanium bolt head according to this utility model.

[0017] In the diagram: 1. Lower mold assembly; 2. Upper mold assembly; 3. Lower mold support base; 4. Lower mold body; 5. Ejector rod; 6. Ejector cylinder; 7. Upper mold support base; 8. Upper mold body; 9. Sealing assembly; 10. Hydraulic press; 11. Positioning support plate; 12. Sealing plate; 13. Lifting limit rod; 14. Limiting plate; 15. Spring; 16. Drainage through hole; 17. O-ring seal; 18. Center hole; 19. Inner cavity; 20. Connector; 21. Liquid supply hose. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Depend on Figures 1 to 4 This invention discloses a precision cold heading die for titanium bolt heads, comprising a lower die assembly 1 and an upper die assembly 2. The lower die assembly 1 consists of a lower die support 3, a lower die body 4, and a push rod 5. The lower die body 4 is embedded at its top end inside the lower die support 3. The push rod 5 slides through the lower die support 3 and the lower die body 4, and its bottom end is connected to an ejector cylinder 6 on a cold heading machine. The upper die assembly 2 consists of an upper die support 7, an upper die body 8, and a sealing assembly 9. The upper die support 7 is connected to a hydraulic press 10 on a cold heading machine. The upper die body 8 is embedded at its bottom end inside the upper die support 7. The sealing assembly 9 is installed inside the upper die support 7 and passes through the upper die body 8. The sealing assembly 9 consists of a positioning support plate 11, a sealing plate 12, a lifting limit rod 13, a limit plate 14, and a spring 1. The upper mold support base 7 is composed of five parts: a positioning support plate 11 welded to the inside of the upper mold support base 7; a plurality of drainage holes 16 are provided on the positioning support plate 11; a lifting limit rod 13 is slidably inserted in the middle position of the positioning support plate 11; a sealing plate 12 is located at the top of the positioning support plate 11 and is fixedly connected to the lifting limit rod 13; a limit plate 14 is sleeved on the lifting limit rod 13 and is fixedly connected to the lifting limit rod 13; a spring 15 is sleeved on the lifting limit rod 13 and is located between the positioning support plate 11 and the limit plate 14; an O-ring 17 is provided on the side of the bottom end of the sealing plate 12; an inner cavity 19 is provided inside the upper mold support base 7; the inner cavity 19 is filled with cutting fluid; a connector 20 communicating with the inner cavity 19 is fixedly provided at the top of one side of the upper mold support base 7; and a liquid supply hose 21 is provided at the other end of the connector 20.

[0020] When in use, the mold is installed inside the cold heading machine. When the screw head is hexagonally shaped, the raw material is clamped by the robot arm of the cold heading machine and moved. The raw material moves to the center position of the top of the lower mold body 4, the upper mold assembly 2 presses down, and the upper mold body 8 shapes the hexagonal surface of the raw material head. At the same time, the punching force is used to remove the excess material. During this process, the bottom end of the lifting limit rod 13 contacts the top surface of the raw material and moves upward under the upward pushing force. The lifting limit rod 13 drives the sealing plate 12 to move upward, so that the drain hole 16 is exposed, so that the cutting fluid inside the inner cavity 19 is discharged through the drain hole 16. The cutting fluid achieves cooling and lubrication, improving the processing quality. After processing, the spring 15 can drive the sealing plate 12 and the lifting limit rod 13 to reset. The connector 20 and the supply hose 21 can continuously supply cutting fluid. The other end of the supply hose 21 can be connected to the supply pump.

[0021] Both the lower die support base 3 and the lower die body 4 have a central hole 18 that is slidably connected to the ejector rod 5 at their center positions. The side of the top of the lower die support base 3 has a chamfered structure. The central hole 18 facilitates the positioning and placement of the raw material. After processing, the raw material can be ejected upwards by the ejector rod 5. During the punching process, an inner hexagonal ring-shaped waste material will be formed. When the robot arm drives the screw to move laterally to the next station, the distance between the bottom surface of the screw and the lower die body 4 is controlled so that the distance is less than the thickness of the waste material. Thus, when the screw moves laterally, it can directly drive the waste material to move laterally, so that the waste material falls automatically under gravity. The side of the top of the lower die support base 3 has a chamfered structure, which makes it easier for the waste material to slide down along the inclined side.

[0022] In operation, by setting up a lower mold assembly consisting of a lower mold support base, a lower mold body, and an ejector pin, and an upper mold assembly consisting of an upper mold support base, an upper mold body, and a sealing component, hexagonal face forming of bolt heads can be achieved. By setting up a sealing component consisting of a positioning support plate, a sealing plate, a lifting limit rod, a limit plate, and a spring, and by filling the inner cavity with cutting fluid, the cutting fluid can be automatically released during the forming process, using the cutting fluid for lubrication and cooling, thereby improving processing quality. By setting the side of the top of the lower mold support base to have a chamfered structure, it is easy to unload the waste material after punching. When the five-station robot moves the screw laterally, the screw moves the waste material laterally, thereby achieving automatic unloading without the need for additional auxiliary unloading mechanisms.

Claims

1. A precision cold heading die for a titanium bolt head, comprising a lower die assembly (1) and an upper die assembly (2), characterized in that: The lower mold assembly (1) consists of a lower mold support base (3), a lower mold body (4), and a push rod (5). The lower mold body (4) is embedded in the top of the lower mold support base (3). The push rod (5) slides through the lower mold support base (3) and the lower mold body (4). The bottom end of the push rod (5) is connected to the ejector cylinder (6) on the cold heading machine. The upper mold assembly (2) consists of an upper mold support base (7), an upper mold body (8), and a sealing component (9). The upper mold support base (7) is connected to the hydraulic press (10) on the cold heading machine. The upper mold body (8) is embedded in the bottom of the upper mold support base (7). The sealing component (9) is installed inside the upper mold support base (7) and passes through the upper mold body (8). The sealing assembly (9) consists of a positioning support plate (11), a sealing plate (12), a lifting limit rod (13), a limit plate (14), and a spring (15). The positioning support plate (11) is welded to the inside of the upper mold support base (7). Several drainage holes (16) are opened on the positioning support plate (11). The lifting limit rod (13) slides through the middle position of the positioning support plate (11). The sealing plate (12) is located at the top of the positioning support plate (11) and is fixedly connected to the lifting limit rod (13). The limit plate (14) is sleeved on the lifting limit rod (13) and is fixedly connected to the lifting limit rod (13). The spring (15) is sleeved on the lifting limit rod (13) and is located between the positioning support plate (11) and the limit plate (14).

2. The precision cold heading die for a titanium bolt head according to claim 1, characterized in that: The sealing plate (12) has an O-ring (17) on the side of its bottom end.

3. The precision cold heading die for a titanium bolt head according to claim 1, characterized in that: Both the lower mold support base (3) and the lower mold body (4) have a central hole (18) that is slidably connected to the top rod (5) at their center positions.

4. The precision cold heading die for a titanium bolt head according to claim 1, characterized in that: The side of the top of the lower mold support (3) has a chamfered structure.

5. The precision cold heading die for a titanium bolt head according to claim 1, characterized in that: The upper mold support base (7) has an inner cavity (19) inside, and the inner cavity (19) is filled with cutting fluid.

6. The precision cold heading die for a titanium bolt head according to claim 5, characterized in that: The top of one side of the upper mold support base (7) is fixedly provided with a connector (20) communicating with the inner cavity (19), and the other end of the connector (20) is provided with a liquid supply hose (21).

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