CN113926967B - Machining process and die for fixed shaft - Google Patents
Machining process and die for fixed shaft Download PDFInfo
- Publication number
- CN113926967B CN113926967B CN202111191855.3A CN202111191855A CN113926967B CN 113926967 B CN113926967 B CN 113926967B CN 202111191855 A CN202111191855 A CN 202111191855A CN 113926967 B CN113926967 B CN 113926967B
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- workpiece
- forming
- groove
- die
- cold header
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- 238000003754 machining Methods 0.000 title claims description 10
- 238000005498 polishing Methods 0.000 claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 238000005238 degreasing Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 16
- 210000001503 joint Anatomy 0.000 claims description 15
- 229910052759 nickel Inorganic materials 0.000 claims description 10
- 238000007747 plating Methods 0.000 claims description 9
- 238000009713 electroplating Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000007493 shaping process Methods 0.000 description 13
- 238000007514 turning Methods 0.000 description 8
- 238000000465 moulding Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/14—Ejecting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The application relates to a processing technology and a die of a fixed shaft, and relates to the technical field of hardware processing, and the technical scheme mainly comprises the following steps: s1, workpiece cold heading forming, namely conveying raw materials to a feed end of a cold header, cutting out a specified size through a cutting mechanism of the cold header, conveying a workpiece clamp to a specified station by a clamping mechanism of the cold header, pushing the workpiece into a die of the cold header by a driving mechanism of the cold header for forming, and pushing the workpiece out of the die by a pushing mechanism of the cold header after forming is completed; s2, vibration polishing and cleaning, namely placing the workpiece processed in the S1 in a vibration polishing machine, adding cleaning liquid, and starting the vibration polishing machine to finish degreasing operation of the workpiece; s3, knurling, namely placing the workpiece processed in the S2 into a thread rolling machine, and knurling the workpiece. The application has the effect of improving production efficiency.
Description
Technical Field
The application relates to the technical field of hardware processing, in particular to a processing technology and a die of a fixed shaft.
Background
Currently, the rod shaft is mainly machined by adopting a lathe milling mode. In the related art, the rod shaft mainly adopts the following process: the automatic turning, vibration polishing and cleaning, instrument plane turning, external circle grinding and knurling processes comprise the steps of firstly, placing a metal bar on a bar conveyor, conveying the metal bar to an automatic turning machine to turn into an integral shape, then placing a workpiece machined by the automatic turning machine in the vibration polishing machine to clean and deoil, and because of uneven cutting surfaces of the workpiece caused by the limitations of the automatic turning machine, carrying out manual plane processing through the instrument turning machine, wherein the surface finish requirement of a product reaches 0.4, the automatic turning machine cannot meet the requirement, and carrying out knurling through a thread rolling machine after the external circle grinding.
With respect to the related art in the above, the inventors consider that there are the following drawbacks: the processing technology is complicated and has low production efficiency, so improvement is needed.
Disclosure of Invention
In order to improve production efficiency, the application provides a processing technology and a die of a fixed shaft.
On one hand, the processing technology of the fixed shaft provided by the application adopts the following technical scheme: a processing technology of a fixed shaft comprises the following specific steps:
s1, workpiece cold heading forming, namely conveying raw materials to a feed end of a cold header, cutting out a specified size through a cutting mechanism of the cold header, conveying a workpiece clamp to a specified station by a clamping mechanism of the cold header, pushing the workpiece into a die of the cold header by a driving mechanism of the cold header for forming, and pushing the workpiece out of the die by a pushing mechanism of the cold header after forming is completed;
s2, vibration polishing and cleaning, namely placing the workpiece processed in the S1 in a vibration polishing machine, adding cleaning liquid, and starting the vibration polishing machine to finish degreasing operation of the workpiece;
s3, knurling, namely placing the workpiece processed in the S2 into a thread rolling machine, and knurling the workpiece.
By adopting the technical scheme, the automatic lathe is used for machining in the cutting mode in the prior related art, but the automatic lathe has unstable factors in the feeding process, so that the surface finish of a workpiece is insufficient, and the instrument lathe is required to process two working procedures of instrument lathe and outer circle grinding, so that the process is complex, the production efficiency is low, and the cost is high; however, the fixed shaft is processed and molded in a cold heading mode, and the finish of the surface of a workpiece cold-headed by the mold of the cold heading machine is up to the standard as long as the finish of the inner wall of the mold is ensured due to the fixed shape of the mold; the cold heading forming mode is a direct forming mode, the automatic lathe adopts a gradual cutting forming mode, the cold heading forming speed is higher than the turning processing speed of the automatic lathe, the forming efficiency of a workpiece can be greatly improved through cold heading forming, and then from the aspect of a processing procedure, the cold heading forming mode can be used for processing the workpiece of the same type, and the cold heading forming mode can be completed through three procedures, so that the processing technology of the original five procedures is replaced, the forming efficiency can be improved, the processing procedures can be reduced, and the effects of improving the production efficiency and reducing the cost can be achieved.
Optionally, a first forming groove and a second forming groove are arranged in the die in the step S1, the diameter of the first forming groove is larger than that of the second forming groove, and the driving mechanism firstly sends the workpiece clamp to the first forming groove for one-time cold heading forming; after primary cold heading forming, the pushing mechanism pushes out the workpiece in the first forming groove and clamps the workpiece onto the driving mechanism, the driving mechanism inserts the workpiece after primary machining into the second forming groove for secondary cold heading forming, and the workpiece is pushed out through the pushing mechanism after machining.
Through adopting above-mentioned technical scheme, through the machine-shaping that passes through first shaping groove and second shaping groove with the work piece, realize carrying out the effect of progressive processing to the work piece, through carrying out gradual reducing shaping to the work piece, reduce the degree of the stress deformation in the twinkling of an eye of work piece, help the stable shaping of work piece.
Optionally, the method further comprises S4, electroplating, namely placing the workpiece subjected to the S3 treatment in an electroplating tank for nickel plating after a plurality of times of acid washing and water washing, drying the workpiece after the nickel plating is finished, and carrying out a salt spray test on the dried workpiece for at least 8 hours.
By adopting the technical scheme, the corrosion resistance of the workpiece is improved by plating nickel on the workpiece, the electroplating effect of the workpiece is checked by a salt spray test, and the stability of nickel plating of the workpiece is ensured.
On the other hand, the application also provides a die which adopts the following technical scheme:
the mold is applied to the processing technology of the fixed shaft, the mold comprises a main mold and an auxiliary mold, a forming hole is coaxially formed in the main mold in a penetrating mode, a thimble is slidably arranged in the forming hole, the auxiliary mold is arranged at one end of the main mold and is provided with a pressure column, the pressure column slides into the forming hole, and the main mold, the pressure column and the thimble are enclosed to form a forming cavity.
The fixed shaft is machined and molded through a molding cavity in the main die, and the molding cavity is formed by matching a thimble in the main die and a pressure column on the auxiliary die to exert pressure deformation on the fixed shaft.
Optionally, an opening at one end of the main die, which is close to the auxiliary die, is provided with a guide groove.
By adopting the technical scheme, the butt joint stability of the fixed shaft workpiece and the main die is improved by utilizing the guiding effect of the guide groove.
Optionally, the auxiliary die is further provided with a filling block, and the filling block is attached to the guide groove.
By adopting the technical scheme, the auxiliary die and the main die are in butt joint more tightly due to the arrangement of the filling blocks.
Optionally, the auxiliary mould is close to the one end of main mould and is provided with the scarf joint groove, the pressure post is installed to the scarf joint inslot, the main mould is provided with the guide post of grafting to the scarf joint inslot.
By adopting the technical scheme, the main die and the auxiliary die are more stably in butt joint by utilizing the guiding effect of the scarf joint groove and the guide post.
Optionally, the thimble week lateral wall is provided with the draw-in groove, the rotation groove has been seted up to the downthehole wall of shaping, the rotation in groove rotation is provided with the rotor arm, the one end that the axis of rotation was kept away from to the rotor arm is provided with barb portion, the one end that the axis of rotation of rotor arm was kept away from to barb portion is provided with arc portion, when the thimble slides towards being close to the auxiliary mould direction, arc portion and draw-in groove joint and the direction removal setting of keeping away from the thimble axis.
Through adopting above-mentioned technical scheme, utilize the rotor arm and the draw-in groove of barb portion and thimble on it to carry out spacing and operation of stepping down, its concrete implementation is, when the thimble slides to barb portion and draw-in groove butt joint, barb portion joint is to in the draw-in groove, and the restriction thimble continues to slide towards the direction of keeping away from the auxiliary mould, when needs thimble is with the work piece ejecting out the molding die cavity, the draw-in groove edge in the thimble promotes the rotor arm and rotates towards the direction of keeping away from the thimble axis, until barb portion releases the restriction effect to the thimble, repeats above-mentioned step.
Optionally, the one end that the rotor arm was kept away from the thimble is connected with the elastic component, the one end that the elastic component was kept away from the rotor arm is connected to the rotation groove tank bottom, and when barb portion butt to thimble week lateral wall, the elastic component is in compression state.
Through adopting above-mentioned technical scheme, the setting of elastic component will be close to the thimble for the rotor arm and remove and provide driving force for the thimble is when sliding to draw-in groove and to couple portion corresponding position, and the elastic component will promote barb portion joint to the draw-in groove.
In summary, the present application includes at least one of the following beneficial technical effects:
the cold header is adopted to carry out cold header forming on the workpiece, the formed workpiece is placed in the vibration polishing machine to carry out vibration polishing, cleaning and degreasing, and then knurling is carried out through the thread rolling machine, so that the advantages of high efficiency and high precision of cold header forming can be utilized, the working procedures can be reduced, the production efficiency is improved, and the cost is reduced while the surface smoothness of the workpiece is met;
the workpiece is subjected to primary cold heading forming and secondary cold heading forming, so that stable forming of the workpiece is facilitated.
Drawings
Fig. 1 is a process flow diagram of an embodiment of the present application.
Fig. 2 is a schematic cross-sectional view of a mold according to an embodiment of the present application.
Reference numerals illustrate: 1. a master mold; 2. a secondary mold; 3. forming a hole; 4. a thimble; 5. a pressure column; 6. a molding cavity; 7. a scarf joint groove; 8. a guide post; 9. a guide groove; 10. filling blocks; 11. a clamping groove; 12. a rotating groove; 13. a rotating arm; 14. an elastic member; 15. a barb portion; 16. an arc-shaped part.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-2.
The embodiment of the application discloses a processing technology of a fixed shaft, which is shown by referring to fig. 1, and specifically comprises the following steps:
s1, workpiece cold heading forming, namely conveying raw materials to a feed end of a cold header, cutting out a specified size through a cutting mechanism of the cold header, conveying a workpiece clamp on the workpiece cutting mechanism to a station of a corresponding die by a clamping mechanism of the cold header, wherein a first forming groove and a second forming groove are formed in the die, the diameter of the first forming groove is larger than that of the second forming groove, and conveying the workpiece clamp to the first forming groove by a driving mechanism for primary cold heading forming; after primary cold heading forming, the workpiece in the first forming groove is pushed out by the pushing mechanism and clamped onto the driving mechanism, the driving mechanism inserts the workpiece after primary machining into the second forming groove for secondary cold heading forming, and the workpiece is pushed out by the pushing mechanism after machining.
S2, vibration polishing and cleaning, namely placing the workpiece processed in the S1 in a vibration polishing machine, adding cleaning liquid, and starting the vibration polishing machine to finish the degreasing operation of the workpiece.
S3, knurling, namely placing the workpiece processed in the S2 into a thread rolling machine, and knurling the workpiece.
S4, nickel plating, namely placing the workpiece treated in the S3 in an electroplating tank for nickel plating after a plurality of times of acid washing and water washing, wherein the thickness of a nickel layer is 7 mu m +/-1 mu m, drying the workpiece after the nickel plating is finished, and carrying out a salt spray test on the dried workpiece for at least 8 hours.
The implementation principle of the processing technology of the fixed shaft in the embodiment of the application is as follows: forming a workpiece by cold heading through a cold heading machine, placing the workpiece in a vibration polishing machine for vibration polishing, and then rolling teeth on a thread rolling machine, wherein the productivity of the original process of the product is 1200 pcs/day, and the productivity of the product can reach 3600 pcs/day; the method has the advantages of high product surface smoothness, high production efficiency and low cost.
The application also discloses a mould, in the processing technology of the aforesaid fixed axle was applied to the mould, refer to the figure 2 and show, the mould includes master mould 1 and auxiliary mould 2, coaxial run through has shaping hole 3 in the master mould 1, the internal sliding in shaping hole 3 sets up thimble 4, the external diameter of thimble 4 slightly is less than the internal diameter of shaping hole 3, auxiliary mould 2 sets up in the one end of master mould 1 and is close to the one end shaping of master mould 1 and has pressure column 5, pressure column 5 slides to in the shaping hole 3, master mould 1 encloses with pressure column 5 and thimble 4 and closes and form into forming cavity 6.
Wherein, the auxiliary mould 2 is close to the one end of main mould 1 and has been seted up scarf joint groove 7, and pressure column 5 installs to scarf joint inslot 7, and main mould 1 is provided with the guide post 8 of grafting to scarf joint inslot 7, and main mould 1 is close to the one end opening of auxiliary mould 2 and is provided with guide slot 9, still takes shape to have filling block 10 on the auxiliary mould 2, and when main mould 1 and auxiliary mould 2 compound die, filling block 10 laminating is to in the guide slot 9.
Further, the shaping of thimble 4 week lateral wall has draw-in groove 11, draw-in groove 11 sets up to the rectangle groove, the rotary tank 12 has been seted up to shaping hole 3 inner wall, rotary arm 13 has been installed in rotary tank 12 internal rotation, still install elastic component 14 in the rotary tank 12, elastic component 14 sets up to the spring, one of them one end and rotary arm 13 of elastic component 14 are connected, the other end is fixed with rotary tank 12 tank bottom connection, the one end that rotary arm 13 kept away from the axis of rotation is fixed with barb portion 15, barb portion 15 is close to the one end setting of auxiliary mold 2 in order to be close to a lateral wall butt of auxiliary mold 2 with the draw-in groove 11, barb portion 15 is kept away from the one end of the pivot of rotary arm 13 and is provided with arc portion 16, when thimble 4 slides towards being close to auxiliary mold 2 direction, arc portion 16 and draw-in groove 11 sliding connection and towards the direction removal setting of keeping away from the thimble 4 axis.
The implementation principle of the die in the embodiment of the application is as follows: placing a workpiece in a forming cavity 6, closing the auxiliary die 2 onto the main die 1, pushing the thimble 4 to slide in a direction away from the auxiliary die 2 by the workpiece in the forming hole 3, and just clamping the barb part 15 into the clamping groove 11 when the main die 1 and the auxiliary die 2 are closed; after the forming is finished, the auxiliary die 2 is separated from the main die 1, the thimble 4 is pushed towards the direction approaching to the auxiliary die 2, the barb part 15 is separated from the clamping groove 11, the limiting effect on the thimble 4 is relieved, and the processing of the workpiece is finished by repeating the steps.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (1)
1. A processing technology of a fixed shaft is characterized in that: the method comprises the following specific steps:
s1, workpiece cold heading forming, namely conveying raw materials to a feed end of a cold header, cutting out a specified size through a cutting mechanism of the cold header, conveying a workpiece clamp to a specified station by a clamping mechanism of the cold header, pushing the workpiece into a die of the cold header by a driving mechanism of the cold header for forming, and pushing the workpiece out of the die by a pushing mechanism of the cold header after forming is completed;
s2, vibration polishing and cleaning, namely placing the workpiece processed in the S1 in a vibration polishing machine, adding cleaning liquid, and starting the vibration polishing machine to finish degreasing operation of the workpiece;
s3, knurling, namely placing the workpiece processed in the S2 into a thread rolling machine, and knurling the workpiece;
the die in the step S1 is internally provided with a first forming groove and a second forming groove, the diameter of the first forming groove is larger than that of the second forming groove, and the driving mechanism firstly sends a workpiece clamp to the first forming groove for one-time cold heading forming; after primary cold heading forming, the pushing mechanism pushes out the workpiece in the first forming groove and clamps the workpiece to the driving mechanism, the driving mechanism inserts the workpiece after primary machining into the second forming groove for secondary cold heading forming, and the workpiece is pushed out by the pushing mechanism after machining is finished;
s4, electroplating, namely placing the workpiece treated in the S3 into an electroplating tank for nickel plating after a plurality of times of acid washing and water washing, drying the workpiece after the nickel plating is finished, and carrying out a salt spray test on the dried workpiece for at least 8 hours;
the mold for the machining process of the fixed shaft comprises a main mold (1) and an auxiliary mold (2), wherein a coaxially penetrating forming hole (3) is formed in the main mold (1), a thimble (4) is slidably arranged in the forming hole (3), the auxiliary mold (2) is arranged at one end of the main mold (1) and is provided with a pressure column (5), the pressure column (5) slides into the forming hole (3), and the main mold (1), the pressure column (5) and the thimble (4) are enclosed to form a forming cavity (6);
the ejector pin (4) is characterized in that a clamping groove (11) is formed in the peripheral side wall of the ejector pin (4), a rotating groove (12) is formed in the inner wall of the forming hole (3), a rotating arm (13) is rotationally arranged in the rotating groove (12), a barb portion (15) is arranged at one end, far away from the rotating shaft, of the rotating arm (13), an arc portion (16) is arranged at one end, far away from the rotating shaft, of the rotating arm (13), of the barb portion (15), and when the ejector pin (4) slides towards the direction close to the auxiliary die (2), the arc portion (16) is clamped with the clamping groove (11) and moves towards the direction far away from the axis of the ejector pin (4);
one end, far away from the thimble (4), of the rotating arm (13) is connected with an elastic piece (14), one end, far away from the rotating arm (13), of the elastic piece (14) is connected to the bottom of the rotating groove (12), when the barb portion (15) is abutted to the peripheral side wall of the thimble (4), the elastic piece (14) is in a compressed state, and when the thimble (4) slides to the position, corresponding to the hook portion (15), of the clamping groove (11), the elastic piece (14) pushes the barb portion (15) to be clamped into the clamping groove (11);
a guide groove (9) is formed in an opening at one end, close to the auxiliary die (2), of the main die (1); a filling block (10) is further arranged on the auxiliary die (2), and the filling block (10) is attached to the guide groove (9); the auxiliary die (2) is provided with a scarf joint groove (7) near one end of the main die (1), the pressure column (5) is installed in the scarf joint groove (7), and the main die (1) is provided with a guide column (8) inserted into the scarf joint groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111191855.3A CN113926967B (en) | 2021-10-13 | 2021-10-13 | Machining process and die for fixed shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111191855.3A CN113926967B (en) | 2021-10-13 | 2021-10-13 | Machining process and die for fixed shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113926967A CN113926967A (en) | 2022-01-14 |
| CN113926967B true CN113926967B (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111191855.3A Active CN113926967B (en) | 2021-10-13 | 2021-10-13 | Machining process and die for fixed shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113926967B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114473381B (en) * | 2022-01-20 | 2023-01-17 | 佛山市南海区伟业高强度标准件有限公司 | Production process of front and rear wheel shafts of motorcycle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1500430A1 (en) * | 1987-11-30 | 1989-08-15 | Камский политехнический институт | Hammer for die closed stamping |
| CN2521093Y (en) * | 2001-12-26 | 2002-11-20 | 曾繁茂 | Bumper protecting device for damping and absorbing impact in collision for vehicle |
| CN202683900U (en) * | 2012-02-06 | 2013-01-23 | 深圳航空标准件有限公司 | Cold upsetting mould of clamping pin |
| CN204476966U (en) * | 2015-02-06 | 2015-07-15 | 重庆工商大学 | Mosquito net frame spring bolt mechanism |
| CN206175397U (en) * | 2016-11-08 | 2017-05-17 | 上海营创精密汽车模型技术有限公司 | Buckle locking mechanism |
| CN109386530A (en) * | 2018-11-09 | 2019-02-26 | 宾科汽车紧固件（昆山）有限公司 | The molding structure and forming method of special-shaped stud |
| CN209324833U (en) * | 2018-11-09 | 2019-08-30 | 宾科汽车紧固件（昆山）有限公司 | The molding machine of special-shaped assembling bolt |
-
2021
- 2021-10-13 CN CN202111191855.3A patent/CN113926967B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1500430A1 (en) * | 1987-11-30 | 1989-08-15 | Камский политехнический институт | Hammer for die closed stamping |
| CN2521093Y (en) * | 2001-12-26 | 2002-11-20 | 曾繁茂 | Bumper protecting device for damping and absorbing impact in collision for vehicle |
| CN202683900U (en) * | 2012-02-06 | 2013-01-23 | 深圳航空标准件有限公司 | Cold upsetting mould of clamping pin |
| CN204476966U (en) * | 2015-02-06 | 2015-07-15 | 重庆工商大学 | Mosquito net frame spring bolt mechanism |
| CN206175397U (en) * | 2016-11-08 | 2017-05-17 | 上海营创精密汽车模型技术有限公司 | Buckle locking mechanism |
| CN109386530A (en) * | 2018-11-09 | 2019-02-26 | 宾科汽车紧固件（昆山）有限公司 | The molding structure and forming method of special-shaped stud |
| CN209324833U (en) * | 2018-11-09 | 2019-08-30 | 宾科汽车紧固件（昆山）有限公司 | The molding machine of special-shaped assembling bolt |
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| Publication number | Publication date |
|---|---|
| CN113926967A (en) | 2022-01-14 |
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