A stamping die for driving a shaft nut

Abstract

The present application relates to a kind of stamping die of drive shaft nut, including outer die sleeve, die cushion is arranged in outer die sleeve and opens and closes mould, and opening and closing mould includes open-close mould sleeve, main mould component, open-close mould sleeve has a taper installation cavity with gradually reducing from upper end to lower end hole diameter, and main mould component is arranged in taper installation cavity, and main mould component includes multiple sector modules, and outer periphery of sector module is inclined and slides along upper and lower inner wall of taper installation cavity, and the middle part of sector module is combined to form containing cavity for containing parts, and the inner end of sector module is provided with positioning part and forming part, and forming part is provided with forming protrusion.By adopting the above technical scheme, the pressing of main mould component by stamping equipment, the axial movement of main mould component is converted into radial force, to ensure uniform stamping force, facilitate clamping processing, torque stability;Speed is fast, efficiency is high, and product consistency is high, and the uniformity of anti-loose effect is good, and appearance is uniform and beautiful;No manual holding material, safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts processing, in particular to a stamping die for a drive shaft nut. BACKGROUND

[0002] In automobile body assembly, due to the structural and functional requirements, the structures of parts are different, Figure 1 The structure of the drive shaft nut is shown in the figure; the drive shaft nut includes upper, middle and lower ends with different diameters and shapes, and a plurality of radial stamping parts are uniformly distributed on the lower end, so that the product is subjected to radial pressure when being screwed in, and the nut has a locking function after assembly. The manufacturing difficulty of the part lies in the plurality of radial stamping parts uniformly distributed on the lower end of the nut, and currently, artificial picking is used to stamp one point at a time on the stamping equipment, and one nut is stamped multiple times, which is low in efficiency and unstable in torque. Moreover, due to the special shape of the nut part, it is not easy to fix the circumferential stamping, and only artificial picking can be used to place the part in the hand of the stamping equipment, which is low in precision and safety. SUMMARY

[0003] In summary, in order to overcome the shortcomings of the prior art, the present application provides a stamping die for a drive shaft nut, which has high forming quality, simple operation and high efficiency.

[0004] To achieve the above purpose, the present application provides the following technical scheme: a stamping die for a drive shaft nut, comprising an outer die sleeve, a die pad and an opening and closing die are arranged in the outer die sleeve, the opening and closing die comprises an opening and closing die sleeve and a main die assembly, the opening and closing die sleeve has a tapered installation cavity with a gradually decreasing hole diameter from the upper end to the lower end, the main die assembly is arranged in the tapered installation cavity, the main die assembly comprises a plurality of fan-shaped modules, the outer periphery of the fan-shaped module is inclined and arranged along the upper and lower sliding of the inner wall of the tapered installation cavity, the middle of the fan-shaped module is combined to form a containing cavity for containing the part, the inner end of the fan-shaped module is provided with a positioning part for positioning the hexagonal part and a forming part for stamping the cylindrical peripheral wall of the lower end of the part, and the forming part is provided with a forming protrusion.

[0005] By adopting the technical scheme, the nut part is placed into the accommodating cavity of the opening and closing mold, the main mold assembly is pressed by the stamping equipment, the main mold assembly moves to the lower end of the conical installation cavity along the axial pressure, since the main mold assembly comprises a plurality of fan-shaped modules, the forming protrusions on the fan-shaped modules continuously extrude the outer periphery of the nut part to realize stamping, the axial movement of the main mold assembly is converted into radial force, and three points on the circumference of the nut part are stamped at the same time, so that the three stamping forces are uniform, clamping and processing are facilitated, the axial stroke is adjusted to control the product torque, the torque is stable, speed is fast, efficiency is high, if the nut part is a three-stamping part, only one stamping is required to form the three-stamping part, the efficiency is three times higher than before, the product consistency is high, the anti-loose effect is consistent, and the appearance is uniform and beautiful; manual material holding is not required, and safety is improved during operation.

[0006] The present application further provides that: the fan-shaped modules are respectively provided with opening and closing spring holes on both sides, and opening and closing springs are arranged between the fan-shaped modules, and the opening and closing springs are arranged in the opening and closing spring holes.

[0007] By adopting the above technical scheme, the opening and closing springs are arranged to increase the buffer between the fan-shaped modules, reduce wear and tear, and increase the service life, and when the main mold assembly is pushed upward along the inner wall of the opening and closing mold sleeve by the mold pad, the opening and closing springs recover from the compressed state to automatically separate the adjacent fan-shaped modules, without the need for manual separation, which is simple to operate and efficient.

[0008] The present application further provides that: the forming protrusions are detachably connected with the fan-shaped modules, and the fan-shaped modules are provided with positioning members for positioning the forming protrusions.

[0009] By adopting the above technical scheme, since the forming protrusions will wear out during continuous stamping, the forming protrusions can be replaced when they are detachably connected with the fan-shaped modules, without the need to replace the entire fan-shaped module, which is simple to use and low in cost, and the positioning members further improve stability.

[0010] The present application further provides that: the forming part is provided with a first mounting hole for mounting the forming protrusions, the front end of the forming protrusion is provided with a stamping part, the rear end is provided with a limiting part for preventing the forming protrusion from moving, and the stamping part is arranged outside the first mounting hole.

[0011] By adopting the above technical scheme, the distance of the stamping part extending out of the first mounting hole is limited by the limiting part, so that the depth of the radial stamping part of the part is controlled, and the stability is high.

[0012] The present application further provides that: the outer periphery of the fan-shaped module is provided with a second mounting hole, the diameter of the second mounting hole is greater than or equal to the diameter of the limiting part, and the first mounting hole and the second mounting hole are in communication.

[0013] By adopting the technical scheme, the forming protrusion is inserted into the fan-shaped protrusion from the second mounting hole of the outer periphery of the fan-shaped module, and then the front end of the forming protrusion is extended from the first mounting hole, thereby facilitating installation, wherein when the limiting part and the second mounting hole are circular in cross section, the diameter of the second mounting hole is greater than or equal to the diameter of the limiting part; when the limiting part and the second mounting hole are square in cross section, the width of the second mounting hole is greater than or equal to the width of the limiting part.

[0014] The application further provides that the fan-shaped module is provided with a positioning groove matched with the positioning part, the upper end of the positioning groove is provided with an opening, and the positioning part is clamped in the positioning groove, and the front end of the positioning part abuts against the limiting part.

[0015] By adopting the technical scheme, when the forming protrusion is inserted into the fan-shaped protrusion from the second mounting hole of the outer periphery of the fan-shaped module, the forming protrusion is inserted from the opening above the positioning groove, the width of the positioning groove is greater than the diameter of the second mounting hole, the positioning part is clamped in the positioning groove and abuts against the limiting part, the forming protrusion is positioned, and the positioning is simple and convenient to disassemble and assemble.

[0016] The application further provides that the limiting part is provided with a connecting hole matched with the positioning part above the limiting part, the fan-shaped module is provided with a mounting through hole matched with the connecting hole above the fan-shaped module, and the positioning part is inserted into the connecting hole through the mounting through hole.

[0017] By adopting the technical scheme, the positioning part is inserted into the connecting hole from the mounting through hole above the positioning part, and the forming protrusion inserted into the first mounting hole from the second mounting hole of the outer periphery of the fan-shaped module is positioned, and the positioning is simple and convenient to disassemble and assemble.

[0018] The application further provides that the positioning part is threadedly connected with the connecting hole.

[0019] By adopting the technical scheme, the fastener is threadedly connected, and the stability is high.

[0020] The application further provides that the mold cushion comprises a rear cushion and a cushion block, the cushion block is arranged between the rear cushion and the main mold assembly, one side of the cushion block corresponding to the main mold assembly is provided with a positioning groove for positioning a part, the diameter of the cushion block is matched with the inner diameter of the lower end of the mold clamping sleeve, a mold opening spring hole is arranged between the cushion block and the rear cushion, and a mold opening spring is arranged in the mold opening spring hole.

[0021] By adopting the technical scheme, when the pressure of the stamping equipment is lost, the mold opening spring restores from the compressed state to move the cushion block upward and drive the fan-shaped module upward, the fan-shaped module moves to the upper end of the conical mounting cavity, the conical mounting cavity is not extruded at the lower end, the opening and closing spring restores from the compressed state to automatically separate the adjacent fan-shaped modules, manual separation is not required, the operation is simple, and the efficiency is high.

[0022] The application further provides that the upper end of the open-close die sleeve abuts against the inner top wall of the outer die sleeve, and a die cap is arranged between the outer die sleeve and the back pad for fixing the back pad.

[0023] By adopting the above technical scheme, the outer die sleeve, the die pad and the open-close die are fixedly connected, high stability is achieved, and the bolt part is conveniently punched on the punching equipment.

[0024] The specific embodiments of the application will be described below with reference to the accompanying drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 Fig. 1 is a structural schematic diagram of a driving shaft nut part of an embodiment of the application;

[0026] Figure 2 Fig. 2 is a structural sectional view of an embodiment of the application;

[0027] Figure 3 Fig. 3 is a schematic diagram of a main die assembly of an embodiment 1 of the application;

[0028] Figure 4 Fig. 4 is a schematic diagram of a main die assembly of an embodiment 2 of the application;

[0029] Figure 5 Fig. 5 is a schematic diagram of a main die assembly of an embodiment 3 of the application;

[0030] Fig. 1 is a structural schematic diagram of a driving shaft nut part of an embodiment of the application; DETAILED DESCRIPTION

[0031] The specific embodiments are only an explanation of the application, and are not a limitation of the application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, and the modifications are protected by the patent law as long as they are within the scope of the claims of the application.

[0032] Referring to the accompanying drawings, Figures 1-5The embodiment discloses a stamping die for driving shaft nut, which comprises an outer die sleeve 1, a die cushion 2 and an open-close die 3 arranged in the outer die sleeve 1, wherein the open-close die 3 comprises an open-close die sleeve 31 and a main die assembly 32, the open-close die sleeve 31 is provided with a tapered installation cavity 311 with a gradually reduced hole diameter from the upper end to the lower end, the main die assembly 32 is arranged in the tapered installation cavity 311, the main die assembly 32 comprises a plurality of fan-shaped modules 321, the fan-shaped modules 321 are arranged in an inclined manner on the outer periphery and slide along the inner wall of the tapered installation cavity 311, the fan-shaped modules 321 are combined in the middle to form a containing cavity 322 for containing parts, the inner end of the fan-shaped modules 321 is provided with a positioning part 3211 for positioning the hexagonal part and a forming part 3212 for stamping the lower end cylindrical peripheral wall of the part, and the forming part 3212 is provided with a forming protrusion 33.

[0033] The embodiment is further provided with the following arrangement: the fan-shaped modules 321 are respectively provided with open-close spring holes 3213 on both sides, and open-close springs are arranged between the fan-shaped modules 321 and in the open-close spring holes 3213.

[0034] The embodiment is further provided with the following arrangement: the forming protrusion 33 is detachably connected with the fan-shaped modules 321, and the fan-shaped modules 321 are provided with a positioning part 34 for positioning the forming protrusion 33.

[0035] The embodiment is further provided with the following arrangement: the forming part 3212 is provided with a first mounting hole 3214 for mounting the forming protrusion 33, the forming protrusion 33 is provided with a stamping part 331 at the front end and a limiting part 332 at the rear end for preventing the forming protrusion 33 from moving, and the stamping part 331 is arranged outside the first mounting hole 3214.

[0036] The embodiment is further provided with the following arrangement: the outer periphery of the fan-shaped modules 321 is provided with a second mounting hole 3216, the diameter of the second mounting hole 3216 is greater than or equal to the diameter of the limiting part 332, and the first mounting hole 3214 and the second mounting hole 3216 are in communication.

[0037] The embodiment is further provided with the following arrangement: the fan-shaped modules 321 are provided with a positioning groove 3215 matched with the positioning part 34, the positioning groove 3215 is arranged in an open manner at the upper end, the positioning part 34 is clamped in the positioning groove 3215, and the front end of the positioning part 34 abuts against the limiting part 332.

[0038] In the present application, the mounting mode of the positioning member 34 can also be that a connecting hole 3217 matched with the positioning member 34 is arranged above the limiting portion 332, a mounting through hole 333 matched with the connecting hole 3217 is arranged above the fan-shaped module 321, and the positioning member 34 is inserted into the connecting hole 3217 through the mounting through hole 333, wherein the positioning member 34 is threadedly connected with the connecting hole 3217.

[0039] The present embodiment is further provided with: the die cushion 2 comprises a rear cushion 21 and a cushion block 22, the cushion block 22 is arranged between the rear cushion 21 and the main die assembly 32, the diameter of the cushion block 22 is matched with the inner diameter of the lower end of the open-close die sleeve 31, a top knockout spring hole 211 is arranged between the cushion block 22 and the rear cushion 21, and a top knockout spring is arranged in the top knockout spring hole 211.

[0040] The present embodiment is further provided with: the upper end of the open-close die sleeve 31 abuts against the inner top wall of the outer die sleeve 1, and a die clamp cap 23 for fixing the rear cushion 21 is arranged between the outer die sleeve 1 and the rear cushion 21.

[0041] The above-mentioned “between” not only refers to the orientation and position between, but also refers to the interaction between different parts.

[0042] In the description herein, it should be understood that the orientation or position relationship indicated by the terms “upper”, “lower”, “inner”, “outer”, “front”, “rear” and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of the description of the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0043] Although the terms “outer die sleeve 1”, “die cushion 2”, “rear cushion 21”, “top knockout spring hole 211”, “cushion block 22”, “die clamp cap 23”, “open-close die 3”, “open-close die sleeve 31”, “conical mounting cavity 311”, “main die assembly 32”, “fan-shaped module 321”, “accommodation cavity 322”, “positioning portion 3211”, “shaping portion 3212”, “open-close spring hole 3213”, “first mounting hole 3214”, “positioning groove 3215”, “second mounting hole 3216”, “connecting hole 3217”, “shaped protrusion 33”, “punching portion 331”, “limiting portion 332”, “mounting through hole 333”, “positioning member 34” and the like are used more frequently in the present application, but the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any kind of additional limitation by interpreting them is contrary to the spirit of the present application.

Claims

1. A stamping die for driving a shaft nut, characterized by: The utility model discloses a die cushion and open-close mould are arranged in the outer die sleeve, and the open-close mould includes open-close mould sleeve, main mould component, the open-close mould sleeve has a tapered installation cavity that the aperture gradually reduces from the upper end to the lower end, and the main mould component is arranged in the tapered installation cavity, and the main mould component includes a plurality of sector modules, the outer periphery of sector module is arranged obliquely and slides along the inner wall of tapered installation cavity, and the middle part of sector module is combined to form the containing cavity for containing parts, the inner end of sector module is provided with the positioning part for positioning the hexagonal part and the forming part for stamping the cylindrical peripheral wall of the lower end of part, and the forming part is provided with forming protruding piece, the forming protruding piece is detachably connected between the sector module, and the sector module is provided with the positioning piece for positioning forming protruding piece.

2. A stamping die for driving a shaft nut as defined in claim 1, characterized in that: The both sides of sector module are respectively provided with open-close spring hole, and open-close spring is arranged between sector modules and is arranged in open-close spring hole.

3. A stamping die for driving a shaft nut as defined in claim 1, characterized in that: The forming part is provided with first mounting hole for installing forming protruding piece, the front end of forming protruding piece is provided with stamping part, the rear end is provided with limiting part for preventing forming protruding piece from moving, and the stamping part is arranged outside first mounting hole.

4. A stamping die for driving a shaft nut as defined in claim 3, characterized in that: The outer periphery of sector module is provided with second mounting hole, and the diameter of second mounting hole is greater than or equal to the diameter of limiting part, and first mounting hole is communicated with second mounting hole.

5. A stamping die for driving a shaft nut as defined in claim 3, wherein: The sector module is provided with positioning groove matched with the positioning piece, and the positioning groove is provided with open upper end, and the positioning piece is clamped in the positioning groove, and the front end of positioning piece abuts against limiting part.

6. A stamping die for driving a shaft nut as defined in claim 3, wherein: The limiting part is provided with connecting hole matched with the positioning piece, and the sector module is provided with mounting through hole matched with the connecting hole, and the positioning piece is inserted into the connecting hole through the mounting through hole.

7. A stamping die for driving a shaft nut as defined in claim 6, characterized in that: The positioning piece is screwed with the connecting hole.

8. A stamping die for driving a shaft nut as defined in claim 1, wherein: The die cushion includes back cushion and cushion block, and the cushion block is arranged between back cushion and main mould component, and the diameter of cushion block is matched with the inner diameter of the lower end of open-close mould sleeve, and top open-close mould spring hole is arranged between cushion block and back cushion, and top open-close mould spring is arranged in top open-close mould spring hole.

9. A stamping die for driving a shaft nut as defined in claim 8, characterized in that: The upper end of open-close mould sleeve abuts against the inner top wall of outer die sleeve, and die cap is arranged between outer die sleeve and back cushion for fixing back cushion.

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