Cold heading die tool for hexagonal combined nut
The cold forging die set for six-angle combination nuts addresses height deviations and unstable spring forces by using a limiting mechanism and adjustable springs to stabilize the forming process and enhance production consistency.
Patent Information
- Application Number
- CN202421681421.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-16
AI Technical Summary
There is a height deviation in the hexagonal combination nut in cold heading production. The part molding is completely up to the stamping spring stroke, and the slip forming is unstable, resulting in fluctuations in the height of the pipe wall, affecting subsequent combinations, which can easily lead to riveting or falling off after stamping, affecting production progress.
The cold heading mold tool using hexagonal combination nuts includes the main mold shell, processing module, limit module and adjustment spring. The movement of the stamping rod is driven by the motor, and the limiting device is added to ensure the sliding position of the main mold, the adjustment spring selection, and the pipe wall forming are stabilized.
Improve the forming stability of hexagonal combination nuts, reduce riveting and shedding, and improve production progress and quality.
Smart Images
Figure CN223097905U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nut production, in particular to a cold heading die tooling for hexagon combination nuts. Background Technique
[0002] Hexagon nuts themselves have good torque transmission ability and load-bearing capacity. The design of their six faces and corners provides greater friction and torque transmission area, making the nuts more difficult to loosen and ensuring the reliability of fasteners. At the same time, the structural design of hexagon nuts also makes them easier to install and can be used in combination with hexagon bolts or screws to form a stable connection.
[0003] There is a height deviation in the cold heading production of hexagon combination nuts. The forming of parts completely depends on the stroke of the upper punch compressing the spring, with slip forming. During the continuous production process, the force on the spring is unstable, resulting in fluctuations in the forming of the pipe wall height, affecting subsequent combinations, and easily leading to riveting and falling off after stamping, thus affecting the production progress. Summary of the Invention
[0004] (I) Technical Problems to be Solved
[0005] Aiming at the deficiencies of the prior art, the utility model provides a cold heading die tooling for hexagon combination nuts, which solves the technical problems of height deviation existing in the cold heading production of hexagon combination nuts, where the forming of parts completely depends on the stroke of the upper punch compressing the spring, with slip forming, and the force on the spring is unstable during the continuous production process, resulting in fluctuations in the forming of the pipe wall height, affecting subsequent combinations, and easily leading to riveting and falling off after stamping, thus affecting the production progress.
[0006] (II) Technical Solutions
[0007] To achieve the above purposes, the utility model is realized through the following technical solutions:
[0008] The cold heading die tooling for hexagon combination nuts includes a main die shell, inside which a processing module is installed. The processing module includes a main die core and a lower punch rod. A limiting module is arranged at the side end of the main die core. A punching rod is movably installed at the side end of the main die shell, and a clamping joint is arranged at the top of the lower punch rod.
[0009] Preferably: A die shell sleeve is fixedly installed on the outside of the main die shell, an adjusting spring is fixedly installed inside the main die shell, and a die shell pad is fixedly installed at the side end of the main die shell. The distance between the main die shell and the die shell pad is increased to reserve space. The top of the punching rod is inserted into the inside of the main die shell and is mutually butted with the top of the lower punch rod. The adjusting spring has an asymmetric design, and the two ends of the adjusting spring are respectively connected to the main die shell and the main die core.
[0010] (III) Beneficial Effects
[0011] 1. By locking the sliding position of the main mold shell and leaving a moving gap between the main mold shell and the main mold core, the main mold shell and the mold shell pad are assembled together to limit the sliding of the lower punch. By adding a limiting device, the sliding position of the main mold is limited during the forming process, making the tube wall forming more stable and improving the phenomenon of stamping riveting and falling off.
[0012] 2. By changing the original mold structure, a limit module is added inside the main mold shell. The movement of the punch rod is driven by a motor, and the top of the punch rod is docked with the top of the lower punch rod. The size of the main mold shell is changed to leave a margin for the mold shell pad limit. The spring can be adjusted to change the tooling size. The spring is reselected to solve the problem of nut height fluctuation and tube wall height fluctuation. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.
[0014] Figure 1 It is a structural diagram of the main mold shell of the utility model.
[0015] Legend: 11. Main mold shell; 12. Main mold core; 13. Mold shell sleeve; 14. Adjustment spring; 15. Mold shell pad; 16. Lower punch rod; 17. Limit module; 18. Punch rod; 19. Card joint. DETAILED DESCRIPTION
[0016] The embodiment of the present application effectively solves the height deviation of the hexagonal combination nuts in the cold heading production by providing a cold heading die tooling for the hexagonal combination nuts. The forming of the parts is completely dependent on the upper punch compression spring stroke and sliding forming. The spring force is unstable during the continuous production process, which causes fluctuations in the forming height of the tube wall, affecting the subsequent combination, and easily leading to riveting and falling off after stamping, affecting the production progress. The main mold shell sliding position is locked, and a movable gap is left between the main mold shell and the main mold core. The main mold shell and the mold shell pad are assembled in combination to limit the sliding of the lower punch rod. By adding a limiting device, the sliding position of the main mold is limited during the forming process, so that the tube wall forming is more stable and the phenomenon of riveting and falling off during stamping is improved. Example
[0017] like Figure 1 As shown, the technical solution in the embodiment of the present application effectively solves the height deviation of the hexagonal combination nut in the cold heading production. The part forming is completely dependent on the upper punch compression spring stroke, the sliding forming, the spring force is unstable during the continuous production process, so that the height of the tube wall is fluctuated, which affects the subsequent assembly and easily leads to riveting and falling off after stamping, affecting the technical problem of production progress. The overall idea is as follows:
[0018] In view of the problems existing in the prior art, the utility model provides a cold heading die tooling for hexagonal combination nuts, including a main mold shell 11, a processing module is installed inside the main mold shell 11, the processing module includes a main mold core 12 and a lower punch rod 16, a side end portion of the main mold core 12 is provided with a limiting module 17, a punch rod 18 is movably installed on the side end portion of the main mold shell 11, a clamping joint 19 is provided on the top of the lower punch rod 16, the main mold shell 11 and the mold shell pad 15 are assembled and limited for the sliding of the lower punch rod 16, and the sliding position of the main mold is limited during the forming process by adding a limiting device, so that the tube wall forming is more stable, a mold shell sleeve 13 is fixedly installed on the outside of the main mold shell 11, and a mold shell sleeve 13 is fixedly installed on the inside of the main mold shell 11 Adjust the spring 14, the side end of the main mold shell 11 is fixedly installed with a mold shell pad 15, the distance between the main mold shell 11 and the mold shell pad 15 is increased, and space is reserved. The top end of the punch rod 18 is inserted into the interior of the main mold shell 11 and docked with the top end of the lower punch rod 16. The adjusting spring 14 is an asymmetric design. The adjusting spring 14 is respectively connected to the main mold shell 11 and the main mold core 12 at both ends. The movement of the punch rod 18 is driven by a motor, and the top end of the punch rod 18 is docked with the top end of the lower punch rod 16. The size of the main mold shell 11 is changed to leave a margin for the limit of the mold shell pad 15. The adjusting spring 14 can change the size of the tooling and re-select the spring to solve the problem of nut height fluctuation and the problem of tube wall height fluctuation.
[0019] Working principle:
[0020] By changing the original mold structure, a limit module 17 is added inside the main mold shell 11, and the movement of the punch rod 18 is driven by a motor. The top of the punch rod 18 is docked with the top of the lower punch rod 16, and the clamping joint 19 is squeezed at the same time, so that the lower punch rod 16 drives the main mold core 12 to slide inside the main mold shell 11. The movement of the main mold core 12 drives the adjustment spring 14 on one side to extend and retract. The sliding position of the main mold shell 11 is locked, and a moving gap is left between the main mold shell 11 and the main mold core 12. The main mold shell 11 and the mold shell pad 15 are assembled together to limit the sliding of the lower punch rod 16. By adding a limit device, the sliding position of the main mold is limited during the forming process, so that the tube wall forming is more stable and the stamping riveting and falling-off phenomenon is improved. At the same time, the adjustment spring 14 can be changed according to the tooling size, and the spring is reselected to solve the problem of nut height fluctuation.
[0021] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.
Claims
1. Cold heading die tooling for hexagonal combination nuts, including a main die shell (11), characterized in that, A processing module is installed inside the main mold shell (11), and the processing module includes a main mold core (12) and a lower punch rod (16). A limiting module (17) is provided at the side end of the main mold core (12). A punch rod (18) is movably installed at the side end of the main mold shell (11), and a clamping joint (19) is provided at the top end of the lower punch rod (16).
2. The cold heading die tooling for the hexagonal combination nut according to claim 1, characterized in that, A mold shell sleeve (13) is fixedly mounted on the outer side of the main mold shell (11).
3. The cold heading die tooling for the hexagonal combination nut as described in claim 1, characterized in that, An adjusting spring (14) is fixedly installed inside the main mold shell (11).
4. The cold heading die tooling for the hexagonal combined nut according to claim 1, characterized in that, A mold shell pad (15) is fixedly mounted on the side end of the main mold shell (11); The distance between the main mold shell (11) and the mold shell pad (15) is increased to reserve space.
5. The cold heading die tooling for the hexagonal combined nut as described in claim 1, characterized in that, The top end of the punch rod (18) is inserted into the interior of the main mold shell (11) and butts against the top end of the lower punch rod (16).
6. The cold heading die tooling for the hexagonal combination nut according to claim 3, characterized in that, The adjusting spring (14) is of an asymmetrical design, and the two ends of the adjusting spring (14) are respectively connected to the main mold shell (11) and the main mold core (12).