CN115716113B - Forming process and forming device of knurling tooth type supporting core and knurling tooth type supporting core - Google Patents
Forming process and forming device of knurling tooth type supporting core and knurling tooth type supporting coreInfo
- Publication number
- CN115716113B CN115716113B CN202211480246.4A CN202211480246A CN115716113B CN 115716113 B CN115716113 B CN 115716113B CN 202211480246 A CN202211480246 A CN 202211480246A CN 115716113 B CN115716113 B CN 115716113B
- Authority
- CN
- China
- Prior art keywords
- rod body
- preset
- rod
- diameter
- blind hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Forging (AREA)
Abstract
本发明提供了一种滚花齿型支撑芯的成型工艺、成型装置及滚花齿型支撑芯，包括将线材切断形成预设胚料；将其缩径为第一预设胚料；继而翻转镦粗成第二预设胚料；将第二预设坯料上部预成型为第一杆体，第一杆体内成型预设盲孔；将预设盲孔正挤压拉伸及预成型外壁为滚花齿型的第二杆体；将预设盲孔再次正挤压拉伸及预成型第三杆体；第三杆体背离第二杆体的一端成型有直径小于预设盲孔的第四杆体；对预设盲孔自第一杆体背离第四杆体的一端穿孔废料，得到预设滚花齿型支撑芯；孔废料包括第四杆体；对预设滚花齿型支撑芯精整后再电镀得到成品花齿型支撑芯。本发明的滚花齿型支撑芯的成型工艺摒弃效率低下的机加工工序，可提高生产效率及材料利用率。
The present invention provides a forming process, forming device, and knurled tooth profile support core, comprising cutting a wire rod to form a preset blank; reducing the diameter of the wire rod to a first preset blank; then flipping and upsetting the wire rod to form a second preset blank; preforming the upper portion of the second preset blank into a first rod body, forming a preset blind hole in the first rod body; positively extruding and stretching the preset blind hole to preform a second rod body with an outer wall having a knurled tooth profile; positively extruding and stretching the preset blind hole again to preform a third rod body; forming a fourth rod body having a smaller diameter than the preset blind hole at one end of the third rod body away from the second rod body; perforating a waste material from the end of the preset blind hole away from the fourth rod body to obtain a preset knurled tooth profile support core; the hole waste material includes the fourth rod body; finishing the preset knurled tooth profile support core and then electroplating the finished knurled tooth profile support core. The forming process of the knurled tooth profile support core of the present invention eliminates inefficient machining processes, thereby improving production efficiency and material utilization.
Description
Technical Field
The invention belongs to the field of fastener forming, and particularly relates to a forming process and a forming device of a knurling tooth type supporting core and the knurling tooth type supporting core.
Background
The new energy automobile is an automobile which adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel automobile-mounted power device) and integrates the advanced technology in the aspects of power control and driving of the automobile, and the formed technical principle is advanced, and the automobile has a new technology and a new structure. The new energy automobile uses various kinds of parts, and is large in quantity, so that the new energy automobile industry can be promoted by corresponding production innovation of all parts, and the new energy automobile has wider development prospect. For example, when the circuit box of the new energy automobile is assembled and produced, a supporting core is needed, the supporting core is of a cylindrical hollow structure, the supporting core is provided with three sections of rod bodies, the upper section of rod body and the lower section of rod body are of regular hollow cylinders, the outer wall of the middle section of rod body is of a knurling tooth type, the diameter of a circle where the tooth bottom of the knurling tooth is positioned is smaller than the outer diameter of the upper section of rod body and the lower section of rod body, and the diameter of a circle where the tooth top of the knurling tooth is positioned is larger than the outer diameter of the upper section of rod body and the lower section of rod body.
In the prior art, the bar stock machining is realized by firstly finishing the outer diameter of cylinders at two ends of a product piece of a bar stock outer diameter finishing tool, then rolling out the teeth by using a knurling wheel, and then drilling and cutting off, so that the production efficiency is low, and the material utilization rate is low.
Disclosure of Invention
In view of the problems in the prior art, the main purpose of the invention is to provide a forming process and a forming device of a knurling tooth type supporting core and the knurling tooth type supporting core, wherein the forming process of the knurling tooth type supporting core completely abandons the original machining procedures of cylinder outer diameter, knurling tooth of a knurling wheel, drilling and the like at two ends of a finish turning product piece, and a multi-station cold header is adopted to perform seven-die electroplating on a preset blank to obtain the finished product piece, so that the production efficiency is high, the material utilization rate is high, the production cost can be greatly reduced, and the method is more suitable for mass production.
The aim of the invention is achieved by the following technical scheme:
The invention provides a forming process of a knurling tooth type supporting core, which comprises a first rod body, a second rod body and a third rod body which are sequentially connected, wherein the first rod body and the third rod body are cylindrical rods, the diameters of the first rod body and the third rod body are respectively a first diameter D 1, the second rod body is a knurling tooth type rod, the diameter D 2 of the tooth top of the second rod body is larger than the first diameter D 1, the diameter D 3 of the tooth bottom of the second rod body is smaller than the first diameter D 1, and the knurling tooth type supporting core is provided with an inner hole which penetrates through the first rod body, the second rod body and the second rod body along the axis direction of the second rod body, and the forming process comprises the following steps:
cutting the wire rod to form a preset blank;
Reducing and shaping the preset blank to form a first preset blank;
Upsetting and shaping the first preset blank after overturning to form a second preset blank;
Preforming the upper part of the second preset blank into the first rod body, and forming a preset blind hole in the first rod body;
Forward extruding and stretching the preset blind hole, and preforming the second rod body, wherein the outer wall of the second rod body is preformed into a knurling tooth shape;
Forward extruding and stretching the preset blind hole subjected to forward extrusion and stretching again, and preforming the third rod body; a fourth rod body is further formed at one end, away from the second rod body, of the third rod body, and the diameter of the fourth rod body is smaller than that of the preset blind hole;
Perforating waste material at one end of the preset blind hole, which is away from the fourth rod body, of the preformed first rod body so as to preform the inner hole and obtain a preset knurled tooth type supporting core, wherein the hole waste material comprises the fourth rod body;
Finishing a preset knurled tooth type supporting core;
and electroplating the finished preset knurled tooth type support core to obtain a finished product of the knurled tooth type support core.
As a further description of the above technical solution, in the step of preforming the upper portion of the second preset blank into the first rod body and forming the preset blind hole in the first rod body, the lower portion of the second preset blank is formed into a fifth rod body, and a diameter of the fifth rod body is smaller than a diameter of a circle where the preformed tooth bottoms of the knurled teeth are located.
The invention also provides a forming device of the knurling tooth type supporting core, which comprises a cold header and a die assembly arranged on the cold header, wherein the die assembly comprises:
the first die is used for reducing and shaping the preset blank to form a first preset blank;
The second die is used for upsetting and shaping the first preset blank to form a second preset blank;
a third die for preforming an upper portion of the second preset blank into a first rod body and forming a preset blind hole in the first rod body;
the fourth die is used for forward extruding and stretching the preset blind hole, preforming a second rod body connected with the first rod body, and preforming the outer wall of the second rod body into a knurling tooth shape;
The fifth die is used for forward extruding and stretching the preset blind hole again and preforming a third rod body, and the third rod body is connected to one end, away from the first rod body, of the second rod body;
A fourth rod body is further formed at one end, away from the first rod body, of the preformed third rod body, and the diameter of the fourth rod body is smaller than that of the preset blind hole;
A sixth die for punching waste from one end of the preformed first rod body, which is far away from the fourth rod body, of the preset blind hole so as to perform inner holes penetrating through the first rod body, the second rod body and obtain a preset knurled tooth type supporting core, wherein the hole waste comprises the fourth rod body;
and the seventh die is used for finishing the preset knurling tooth type supporting core and comprises flattening the two end faces of the preset knurling tooth type supporting core.
As a further description of the above technical solution, the forming device further includes a cutting mechanism for cutting the wire into the preset blank.
As a further description of the above technical solution, the molding device further includes a feeding mechanism for feeding between the plurality of molds.
As a further description of the above technical solution, the feeding mechanism is a clip.
As a further description of the above technical solution, the first mold, the second mold, the third mold, the fourth mold, the fifth mold, the sixth mold, and the seventh mold each include a main mold and a die provided corresponding to the main mold.
As a further description of the above technical solution, the main cavity of the fifth mold has a first cavity section and a second cavity section, where the inner diameter of the first cavity section is equal to the diameter of the circle where the preformed tooth tip of the second rod body is located, and the inner diameter of the second cavity section is greater than the diameter of the circle where the preformed tooth tip of the second rod body is located and is smaller than the diameter of the circle where the preformed tooth tip of the second rod body is located.
The invention also provides a knurling tooth type supporting core, which comprises a first rod body, a second rod body and a third rod body which are sequentially connected, wherein the first rod body and the third rod body are cylindrical rods, and the second rod body is a knurling tooth type rod;
The diameters of the first rod body and the third rod body are both a first diameter D 1, and the diameter D 2 of a circle where the tooth tops of the second rod body are positioned is larger than the first diameter D 1;
The diameter D 3 of the circle where the tooth bottom of the second rod body is located is smaller than the first diameter D 1.
As a further description of the above technical solution, the knurled tooth-shaped supporting core is provided with an inner hole penetrating through the first rod body, the second rod body and the second rod body along the axial direction thereof.
In summary, the outstanding effects of the invention are as follows:
The forming process of the knurling tooth type supporting core completely eliminates the machining procedures of cylindrical outer diameters, knurling teeth of knurling wheels, drilling and the like at two ends of an original finish turning product piece, adopts a multi-station cold header, performs seven-die stamping on a preset blank, and then electroplates the blank to obtain the finished product piece, and the production speed can reach more than 120 pieces per minute through uncertainty evaluation, so that the production efficiency is greatly improved, the material utilization rate is also improved, the production cost is greatly reduced, and the method is more suitable for mass production.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention and that other drawings may be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a finished product of a knurled tooth type support core in an embodiment of the invention;
FIG. 2 is a cross-sectional view of a finished knurled support core in accordance with an embodiment of the present invention;
FIG. 3 is a top view of a finished knurled support core in accordance with an embodiment of the present invention;
FIG. 4 is a partial cold header diagram of a knurled tooth support core in accordance with an embodiment of the present invention;
Reference numerals illustrate:
1. The support core comprises a knurling tooth type support core, 11, a first rod body, 12, a second rod body, 13, a third rod body, 14, an inner hole, 15 and knurling teeth;
21', a first preset rod body, 22', a second preset rod body, 23', a third preset rod body;
3. The device comprises a blind hole, a fourth rod body, a fifth rod body and a third rod body, wherein the blind hole is preset;
D 1, a first diameter, D 2, a diameter of a circle where the tooth top of the second rod body is located, and D 3, a diameter of a circle where the tooth bottom of the second rod body is located.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "middle", "lower", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The following is a detailed description of embodiments with reference to fig. 1 to 4.
The embodiment provides a forming process of a knurling tooth type support core, the knurling tooth type support core includes a first rod body 11, a second rod body 12 and a third rod body 13 which are sequentially connected, wherein, the first rod body 11 and the third rod body 13 are cylindrical rods, the diameters are all first diameters D1, the second rod body 12 is a knurling tooth type rod, the diameter D2 of the tooth top of the second rod body is larger than the first diameter D1, the diameter D3 of the tooth bottom of the second rod body is smaller than the first diameter D1, the knurling tooth type support core 1 is provided with an inner hole 14 which penetrates through the first rod body 11, the second rod body 12 and the second rod body 12 along the axial direction, and the forming process comprises the following steps:
cutting the wire rod to form a preset blank;
Reducing and shaping the preset blank to form a first preset blank;
Upsetting and shaping the first preset blank after overturning to form a second preset blank;
Preforming the upper part of the second preset blank into the first rod body 11, and forming a preset blind hole 3 in the first rod body 11;
Forward extruding and stretching the preset blind hole 3, and preforming the second rod body 12, wherein the outer wall of the second rod body 12 is preformed into a knurled tooth shape;
forward extruding and stretching the preset blind hole 3 which is forward extruded and stretched again, and preforming the third rod body 13, wherein a fourth rod body 4 is further formed at one end of the third rod body 13, which is far away from the second rod body 12, and the diameter of the fourth rod body 4 is smaller than that of the preset blind hole 3;
Perforating waste material at one end of the preset blind hole 3, which is away from the fourth rod body 4 and is preformed, of the first rod body 11 so as to preform the inner hole 14, thereby obtaining a preset knurled tooth type supporting core, wherein the hole waste material comprises the fourth rod body 4;
Finishing a preset knurled tooth type supporting core;
and electroplating the finished preset knurled tooth type support core to obtain a finished product of the knurled tooth type support core.
By the process, a multi-station cold header is used for processing, seven dies and seven punches are carried out on a preset blank, the production speed can reach more than 120 pieces per minute, firstly, wires are cut off and formed into the preset blank, and the preset blank is subjected to diameter reduction and shaping, so that the preset blank is formed into a first preset blank; the second die performs upsetting shaping on the turned first preset blank to form a second preset blank, then the stamping die in the third die performs impact extrusion on the upper end of the second preset blank to enable the upper portion of the first preset blank to be preformed in the main die to obtain a first preset rod body 21', meanwhile, the first preset rod body 21' is internally provided with a preset blind hole 3 in an impact extrusion mode, then the stamping die of the fourth die performs forward extrusion on the preset blind hole 3 again to enable the first preset rod body 21 'to extend towards the lower end of the first preset rod body 21', so that the first preset rod body 21 'is preformed in the main die to obtain a second preset rod body 22', the outer wall of the second preset rod body 22 'is preformed for knurling, the bottom of the preset blind hole 3 is positioned in the second preset rod body 22', the fifth die performs impact extrusion on the preset blind hole 3 after stretching to enable the second preset blind hole 3 to extend towards the lower end of the first preset rod body 21', the second preset rod body 23' is prevented from extending towards the lower end of the third preset rod body 23', and simultaneously the third preset rod body 23' is prevented from being stretched towards the lower end of the second preset rod body 23, the method is used for discharging force, ensuring that a third preset rod body 23' is molded and stuck to a die, the die is stressed normally, the diameter of the fourth rod body 4 is smaller than the diameter of the preset blind hole 3, ensuring that the sizes of the third preset rod body 23' and the preset inner hole 14 are ensured when the next die punches waste, and then, the punch die of the sixth die punches waste, namely, the end, away from the fourth rod body 4, of the first preset rod body 21' punches waste from the preset blind hole 3, so that the inner hole 14 is preformed in the preset blind hole 3, and a preset knurled tooth type supporting core is obtained, wherein the punched waste comprises the fourth rod body 4 reserved in the fifth die, and finally, the seventh die performs finishing on the preset knurled tooth type supporting core. So far, the cold heading is completed, and the preset knurling tooth type supporting core 1 obtained by the cold heading is subjected to necessary electroplating procedures, so that the finished knurling tooth type supporting core 11 is obtained.
Therefore, the cold heading forming knurling tooth type supporting core1 is adopted, machining procedures such as the outer diameter of cylinders at two ends of an original finish turning product piece, knurling teeth 15 of a knurling wheel, drilling and the like are completely abandoned, the production efficiency is greatly improved, meanwhile, the material utilization rate is also improved, the production cost is greatly reduced, and the method is more suitable for mass production.
Specifically, in the present embodiment, in the step of preforming the upper portion of the second preset blank into the first rod 11 and forming the preset blind hole 3 in the first rod 11, the lower portion of the second preset blank is formed into the fifth rod 5, that is, when blank processing is performed on the third mold station, the lower end of the first preset rod 21' is formed into the fifth rod 5 synchronously, and the diameter of the fifth rod 5 is smaller than the diameter of the circle where the bottom of the knurled tooth 15 preformed in the subsequent fourth mold is located, so that the in-mold forming of the fourth-station flower tooth mold is not affected. Similarly, it should be understood that, after the fourth die performs the knurling teeth 15, the diameter of the third preset rod 23' formed simultaneously with the fourth die should also be smaller than the diameter of the circle where the bottom of the preformed knurling teeth 15 are located, so as to ensure smooth demolding of the blank after the fourth die is formed.
Referring to fig. 4, seven-die seven-stamping is performed sequentially from right to left, only cold heading diagrams of a third station, a fourth station and a fifth station are shown, and specifically, in this embodiment, the provided forming device for a knurled tooth type supporting core includes a cold header (not shown in the drawing), and a die assembly (not shown in the drawing) mounted on the cold header, where the die assembly includes:
the first die is used for reducing and shaping the preset blank to form a first preset blank;
The second die is used for upsetting and shaping the first preset blank to form a second preset blank;
A third die for preforming the upper portion of the second preset blank into a first rod body 11, obtaining a first preset rod body 21' as shown in fig. 4, and forming preset blind holes 3 in the first rod body 11;
a fourth die, configured to forward extrude and stretch the preset blind hole 3, and preform a second rod body 12 connected to the first rod body 11, so as to obtain a second preset rod body 22' shown in fig. 4, where an outer wall of the second preset rod body is preformed into a knurled tooth shape;
a fifth die for forward extruding and stretching the preset blind hole 3 again and preforming a third rod 13 to obtain a third preset rod 23' as shown in fig. 4, which is connected to one end of the second rod 12 facing away from the first rod 11;
A fourth rod body 4 is further formed at one end of the preformed third rod body 13, which is away from the first rod body 11, and the diameter of the fourth rod body 4 is smaller than that of the preset blind hole 3;
A sixth die for punching waste from one end of the preformed first rod body 11, which is far away from the fourth rod body 4, of the preset blind hole 3 to perform an inner hole 14 penetrating through the first rod body 11, the second rod body 12 and the second rod body 12, so as to obtain a preset knurled tooth-shaped supporting core;
And a seventh die, configured to finish the preset knurling tooth type support core, including making two end surfaces of the preset knurling tooth type support core flat, making the knurling tooth type more full, eliminating the influence of material flow on the flatness of the end surface during hole extrusion forming, especially the influence on the flatness of the upper end surface (i.e. the end surface of the first preset rod body 21' deviating from the second preset rod body 22 '), and controlling the size, including making the sizes of the first preset rod body 21', the second preset rod body 22', the third preset rod body 23' and the preset inner hole 14 completely meet the size requirement of the finished product.
Specifically, in this embodiment, the forming device further includes a cutting mechanism (not shown in the drawing) for cutting the wire into the preset blank.
Specifically, in this embodiment, the forming device further includes a feeding mechanism (not shown in the drawing) for feeding between the plurality of dies.
Specifically, in this embodiment, the feeding mechanism is a clip. The clips move the feed between the dies.
Specifically, in this embodiment, each of the first mold, the second mold, the third mold, the fourth mold, the fifth mold, the sixth mold, and the seventh mold includes a main mold (not shown in the figure) and a die (not shown in the figure) disposed corresponding to the main mold;
Specifically, in this embodiment, the main cavity of the fifth mold has a first cavity section and a second cavity section, where the inner diameter of the first cavity section is equal to the diameter of the preformed tooth top of the second rod body 12 and is used for accommodating the second preset rod body 22', and the inner diameter of the second cavity section is greater than the diameter of the preformed tooth top of the second rod body 12 and is smaller than the diameter of the preformed tooth top of the second rod body 12 and is used for forming the third preset rod body 23'.
Referring to fig. 1 to 3, specifically, the knurled tooth-shaped supporting core 1 provided in this embodiment includes a first rod body 11, a second rod body 12 and a third rod body 13 connected in sequence, where the first rod body 11 and the third rod body 13 are cylindrical rods, the second rod body 12 is a knurled tooth-shaped rod, diameters of the first rod body 11 and the third rod body 13 are both a first diameter D1, a circular diameter D2 of a tooth top of the second rod body 12 is greater than the first diameter D1, a circular diameter D3 of a tooth bottom of the second rod body 12 is smaller than the first diameter D1, and an inner hole 14 penetrating through the first rod body 11, the second rod body 12 and the second rod body 12 along an axial direction of the knurled tooth-shaped supporting core 1 is provided.
It should be noted that the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited to the foregoing embodiment, but modifications, equivalents, improvements and etc. of the technical solution described in the foregoing embodiments may be made by those skilled in the art, and all changes, equivalents, modifications and improvements that fall within the spirit and principle of the present invention are included in the scope of protection of the present invention.
Claims (8)
1. The utility model provides a forming process of knurling tooth type support core, knurling tooth type support core is including the first body of rod, second body of rod and the third body of rod that connect in order, wherein, first body of rod and the third body of rod are cylindrical pole, and the diameter is first diameter D 1, the second body of rod is knurling tooth type pole, its top place circle diameter D 2 is greater than first diameter D 1, its tooth bottom place circle diameter D 3 is less than first diameter D 1, knurling tooth type support core is equipped with and link up along its axis direction the hole of first body of rod, second body of rod and third body of rod, its characterized in that includes the following steps:
cutting the wire to form a preset blank;
Reducing and shaping the preset blank to form a first preset blank;
Upsetting and shaping the first preset blank after overturning to form a second preset blank;
Preforming the upper part of the second preset blank into the first rod body, and forming a preset blind hole in the first rod body;
Forward extruding and stretching the preset blind hole, and preforming the second rod body, wherein the outer wall of the second rod body is preformed into a knurling tooth shape;
Forward extruding and stretching the preset blind hole subjected to forward extrusion and stretching again, and preforming the third rod body; a fourth rod body is further formed at one end, away from the second rod body, of the third rod body, and the diameter of the fourth rod body is smaller than that of the preset blind hole;
waste is punched from one end of the first rod body, which is preformed from the preset blind hole and is away from the fourth rod body, so that the inner hole is preformed, and a preset knurled tooth type supporting core is obtained;
Finishing a preset knurled tooth type supporting core;
And electroplating the finished preset knurling tooth type supporting core to obtain a finished knurling tooth type supporting core.
2. The process of claim 1, wherein in the step of preforming the upper portion of the second preset blank into the first rod body and forming the preset blind hole in the first rod body, the lower portion of the second preset blank is formed into a fifth rod body having a diameter smaller than a diameter of a circle where the preformed tooth bottom of the knurled tooth type is located.
3. The utility model provides a forming device of knurl tooth formula support core, includes the cold header, and install in the mould subassembly on the cold header, its characterized in that, the mould subassembly includes:
the first die is used for reducing and shaping the preset blank to form a first preset blank;
The second die is used for upsetting and shaping the first preset blank to form a second preset blank;
a third die for preforming an upper portion of the second preset blank into a first rod body and forming a preset blind hole in the first rod body;
the fourth die is used for forward extruding and stretching the preset blind hole, preforming a second rod body connected with the first rod body, and preforming the outer wall of the second rod body into a knurling tooth shape;
The fifth die is used for forward extruding and stretching the preset blind hole again and preforming a third rod body, and the third rod body is connected to one end, away from the first rod body, of the second rod body;
A fourth rod body is further formed at one end, away from the first rod body, of the preformed third rod body, and the diameter of the fourth rod body is smaller than that of the preset blind hole;
The sixth die is used for punching waste materials from one end of the preformed first rod body, which is away from the fourth rod body, of the preset blind hole so as to perform inner holes penetrating through the first rod body, the second rod body and the third rod body to obtain a preset knurled tooth type supporting core, wherein the waste materials comprise the fourth rod body;
and the seventh die is used for finishing the preset knurling tooth type supporting core and comprises flattening the two end faces of the preset knurling tooth type supporting core.
4. A knurl toothed support core forming device as in claim 3, further comprising a shearing mechanism for shearing wire into the preset blank.
5. A knurl toothed support core forming device as in claim 3 further comprising a feed mechanism for feeding between the plurality of dies.
6. The knurled support core forming device of claim 5, wherein the feed mechanism is a clip.
7. The apparatus for forming a knurled support core as claimed in claim 3, wherein the first, second, third, fourth, fifth, sixth and seventh molds each comprise a main mold and a die provided in correspondence with the main mold.
8. The apparatus according to claim 7, wherein the main cavity of the fifth die has a first cavity section and a second cavity section, the first cavity section has an inner diameter equal to a round diameter of a preformed tooth tip of the second rod body, and the second cavity section has an inner diameter larger than a round diameter of a preformed tooth bottom of the second rod body and smaller than a round diameter of a preformed tooth tip of the second rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211480246.4A CN115716113B (en) | 2022-11-24 | 2022-11-24 | Forming process and forming device of knurling tooth type supporting core and knurling tooth type supporting core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211480246.4A CN115716113B (en) | 2022-11-24 | 2022-11-24 | Forming process and forming device of knurling tooth type supporting core and knurling tooth type supporting core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115716113A CN115716113A (en) | 2023-02-28 |
| CN115716113B true CN115716113B (en) | 2025-09-16 |
Family
ID=85256213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211480246.4A Active CN115716113B (en) | 2022-11-24 | 2022-11-24 | Forming process and forming device of knurling tooth type supporting core and knurling tooth type supporting core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115716113B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210660935U (en) * | 2019-08-14 | 2020-06-02 | 上海纳特汽车标准件有限公司 | Novel annular knurl turns over riveter sleeve structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07106415B2 (en) * | 1993-10-14 | 1995-11-15 | アカマツフォーシス株式会社 | Forging and forging method of two-stage gear with shaft |
| CN104209445A (en) * | 2014-08-15 | 2014-12-17 | 宾科汽车紧固件（昆山）有限公司 | Cold-heading device for irregular knurling sleeve and production technique of cold-heading device |
| CN205926971U (en) * | 2016-08-25 | 2017-02-08 | 苏州工业园区新凯精密五金有限公司 | A cold heading die group for making drive shaft |
| CN112658182A (en) * | 2020-09-25 | 2021-04-16 | 宁波振华汽车零部件有限公司 | Cold heading forming process of toothed dehydration shaft |
-
2022
- 2022-11-24 CN CN202211480246.4A patent/CN115716113B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210660935U (en) * | 2019-08-14 | 2020-06-02 | 上海纳特汽车标准件有限公司 | Novel annular knurl turns over riveter sleeve structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115716113A (en) | 2023-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102699632B (en) | Process for manufacturing lining blank of damper | |
| CN101947567B (en) | Processing technique of flat-head hexagon bolt for cold extrusion shaping cart | |
| CN109848361B (en) | Method for manufacturing T-shaped elliptical inner sleeve blank for automobile | |
| CN113020535B (en) | A kind of cold heading forming module and cold heading forming method of turning riveting nut | |
| CN203356523U (en) | Manufacturing device for flange nut through cold heading | |
| CN106903251A (en) | Cold heading production process of metal parts with through-hole long handle | |
| CN106141061A (en) | A kind of cold-heading molding technique for manufacturing positioning and guiding nut and cold-heading module | |
| CN106475502B (en) | A kind of jag draws the manufacturing method of cap blank | |
| CN101136532A (en) | Production technique of cylinder type contact pin for electric connection | |
| CN102152062B (en) | Process for manufacturing pneumatic inner and outer tooth joint blank | |
| CN114273600A (en) | Square-neck bolt, forming die and forming process | |
| CN102091746B (en) | Compound molding process of integral automobile body metal stamping part | |
| CN112317674A (en) | Brake caliper connecting nut and preparation device and preparation method thereof | |
| CN115518994A (en) | Connecting pin cold heading forming die combination and forming method thereof | |
| CN117020100A (en) | Forming process and forming device of inner clamp nut and inner clamp nut | |
| CN113857418A (en) | Method for manufacturing T-shaped adjusting nut blank for vehicle steering system | |
| CN201815555U (en) | Machining equipment for flat-head hexagon bolt of cold-extrusion forming vehicle | |
| CN211071645U (en) | Cold heading forming die assembly for passenger car engine oil delivery pipe bolt | |
| CN110421110A (en) | Fluting axle nut one-step moulding method | |
| CN209753923U (en) | Cold heading device for electronic parking adjusting nut | |
| CN1286597C (en) | Extrusion molding method of self-locking nut | |
| CN218192384U (en) | Forming device for adjusting screw rod | |
| CN219817893U (en) | Cold heading subassembly and cold heading mould thereof | |
| CN115716113A (en) | Molding process and molding device for knurled tooth type supporting core and knurled tooth type supporting core | |
| CN204052759U (en) | The cold upsetting die of car of electric seat of car power transmission shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |