CN114589282A - Die for connecting pipe nut and forming method based on die - Google Patents
Die for connecting pipe nut and forming method based on die Download PDFInfo
- Publication number
- CN114589282A CN114589282A CN202210093003.9A CN202210093003A CN114589282A CN 114589282 A CN114589282 A CN 114589282A CN 202210093003 A CN202210093003 A CN 202210093003A CN 114589282 A CN114589282 A CN 114589282A
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- die
- hole
- nut
- shaping
- forming
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 19
- 239000010935 stainless steel Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000007493 shaping process Methods 0.000 claims description 64
- 230000007704 transition Effects 0.000 claims description 50
- 210000002445 nipple Anatomy 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000004080 punching Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/64—Making machine elements nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Forging (AREA)
Abstract
The invention discloses a die for a connecting pipe nut and a forming method based on the die, which are used for cold heading forming of the connecting pipe nut made of stainless steel materials. The invention has the advantages that the cold heading forming of the connecting pipe nut made of stainless steel can be realized, the formed connecting pipe nut has high reliability, the precision reaches the standard, the production is easy, and the application cost of the connecting pipe nut is reduced.
Description
Technical Field
The application relates to the technical field of connection pipe nut processing, in particular to a die for a connection pipe nut and a forming method based on the die.
Background
The connecting pipe nut comprises a hexagon body and a connecting pipe part, a threaded hole is arranged in the hexagon body, and a cylindrical hole with the size smaller than the threaded hole is arranged in the connecting pipe part to complete the connecting pipe. The connecting pipe nut is commonly used in the fields of air-conditioning refrigeration and the like, and a connecting pipe nut and a copper pipe bell mouth structure are mostly adopted at the connecting pipe of an internal machine and an external machine of the split air conditioner and are fixed through interference fit between the pipe joint and the end surface of the connecting pipe nut. The union nut is usually made of copper for reasons of corrosion resistance and its special construction.
For example, chinese patent publication No. CN201520165254.9 issued on 23/9/2019 by the utility model discloses a connection pipe nut and a split air conditioner. This take over nut is used for cooperating with connecting pipe (1), and take over nut is including nut section (2), taper hole section (3), through-hole section (4) and through-hole extension section (5) that connect gradually, and connecting pipe (1) is worn to establish in through-hole section (4) and through-hole extension section (5).
The defects of the prior art are as follows: the adapter nut is usually formed by copper materials, so that the adapter nut is low in hardness, poor in reliability and easy to deform; copper is expensive, material cost is too high, the traditional process for manufacturing the copper connecting pipe nut cannot be directly used for forming the stainless steel connecting pipe nut, the precision of the stainless steel connecting pipe nut formed by cold heading of the existing die is low, and processing defects are easy to occur.
Disclosure of Invention
Based on the defects in the prior art, the invention provides the die for the connecting pipe nut and the forming method based on the die, the cold heading forming of the connecting pipe nut made of stainless steel can be realized, the formed connecting pipe nut is high in reliability, reaches the standard in precision, is easy to produce, and reduces the application cost of the connecting pipe nut.
In order to achieve the above object, the present invention adopts the following technical solutions.
The utility model provides a take over mould for nut, characterized by for stainless steel's takeover nut cold-heading shaping, including the hexagon moulded die and the takeover portion moulded die that set gradually, takeover portion moulded die is including the first whole mould and the second whole mould that set gradually, and the inside of first whole mould and second whole mould is equipped with first round platform hole and second round platform hole respectively, and the height in first round platform hole is less than second round platform hole, and the cone angle number of degrees in first round platform hole and second round platform hole equals.
Through the disclosed mould of this application, utilize the hexagonal body moulded die to accomplish the hexagonal body shaping after, loop through the round platform hole in first integer mould and the second integer mould, accomplish the upset of connecting pipe portion, the shaping is convenient, and easily production can adopt stainless steel to make the takeover nut, and the takeover nut reliability after the shaping is high, and manufacturing cost especially material cost reduces.
Preferably, the hexagon body forming die comprises a first pre-die, a second pre-die, a first fixed die and a second fixed die which are sequentially arranged, the transverse size and the longitudinal size of the first pre-die internal forming hole and the second pre-die internal forming hole are the same, the transverse size and the longitudinal size of the first fixed die internal forming hole and the second fixed die internal forming hole are the same, the transverse size of the first fixed die internal forming hole is larger than the transverse size of the first pre-die internal forming hole, and the longitudinal size of the first fixed die internal forming hole is larger than the longitudinal size of the first pre-die internal forming hole. The process of changing the workpiece from the pre-mold to the fixed mold is the process of shortening and transversely enlarging, and the forming reliability of the hexagon body is guaranteed.
Preferably, a first hexagonal hole is formed in the first integral die, a second hexagonal hole is formed in the second integral die, round platform transition holes are formed in the lower ends of the first hexagonal hole and the second hexagonal hole respectively, the first round platform hole is formed in the lower end of the round platform transition hole in the first integral die, and the second round platform hole is formed in the lower end of the round platform transition hole in the second integral die. The round platform transition hole set up to the hexagon lower extreme and provide the transition to taking over the portion transformation for take over the nut and can take over the portion shaping when the shaping and target in place, this changeover portion does not exist to the mould of taking over the nut among the prior art, and stainless steel's intensity is high, non-deformable, and defect easily appears in the cold-heading, and this is the unique design that this application goes on in order to accomplish the cold-heading shaping of stainless steel union nut, can improve the shaping precision that stainless steel matter union nut.
Preferably, the internal molding holes of the first pre-mold, the second pre-mold, the first fixed mold and the second fixed mold respectively comprise hexagonal prism holes, transition chamfers are arranged in the hexagonal prism holes, arc hole surfaces are arranged at the lower ends of the hexagonal prism holes, and the heights of the hexagonal prism holes of the first pre-mold, the second pre-mold, the first fixed mold and the second fixed mold are equal. The hexagonal prism holes are used as the main body part of the connecting pipe nut, in order to ensure the overall precision of the connecting pipe nut, the height of the hexagonal prism holes is kept unchanged in each hexagonal body forming die, variables are controlled, and the forming precision of the hexagonal bodies is improved.
Preferably, the height from the lower end of the transitional hole of the circular table in the first shaping die to the upper end face of the first shaping die is equal to the height from the lower end of the transitional hole of the circular table in the second shaping die to the upper end face of the second shaping die. And the cold heading precision of the hexagonal prism and the circular truncated cone transition surface is ensured.
Preferably, the height from the lower end of the frustum transition hole in the first shaping die to the upper end face of the first shaping die is equal to the height of the hexagonal prism hole. The transition section formed on the outer side of the connecting pipe nut through the circular truncated cone transition hole is formed on the basis of the hexagonal prism hole, the forming position is reliable, and the subsequent connecting pipe part is conveniently extruded and upset from the hexagon body.
Preferably, the cone angle of the truncated cone transition hole is larger than that of the first truncated cone hole. The circular truncated cone transition hole is ensured to have reliable material guiding capability, and upsetting of the stainless steel pipe connecting nut is facilitated.
Preferably, the connecting pipe nut comprises a hexagon body and a connecting pipe part, a threaded through hole is formed in the hexagon body, a cylindrical hole is formed in the outer end of the connecting pipe part, a transition taper hole is formed between the cylindrical hole and the threaded through hole, a punching needle used by the second shaping die is in a stepped shaft shape corresponding to the threaded through hole, the transition taper hole and the cylindrical hole, a punching needle used by the first shaping die comprises a pre-threaded shaft section, a transition taper section and a cylindrical section, the diameter of the pre-threaded shaft section is smaller than that of the threaded through hole, the height of the transition taper section is smaller than that of the transition taper hole, and the height of the cylindrical section is smaller than that of the cylindrical hole. The inner hole of the connecting pipe nut is synchronously formed through the punching needles on the first die and the second die, subsequent drilling is not needed, and the forming efficiency of the connecting pipe nut is improved.
A pipe connecting nut forming method based on the die is characterized by comprising the following steps:
A. preparing materials, namely preparing stainless steel cylindrical materials with determined specifications;
B. performing a hexagon, performing cold heading on a cylindrical material by a first pre-die and a second pre-die in sequence to complete the preforming of the hexagon, wherein the first pre-die and the second pre-die respectively correspond to two end surfaces of the connecting pipe nut, and a pre-through hole is formed in the connecting pipe nut;
C. shaping the hexagon, namely completing the shaping of the hexagon through cold heading of a first fixed die and a second fixed die in sequence, wherein the first fixed die and the second fixed die respectively correspond to two end surfaces of the connecting pipe nut, and pre-through holes in the connecting pipe nut are synchronously expanded and shaped;
D. and (4) forming the pipe connecting part, namely performing cold heading on the first die and the second die in sequence to finish forming the pipe connecting part.
The cold heading forming of stainless steel's takeover nut can be accomplished through the mould of this application, and the shaping is convenient, and the shaping reliability is high.
The invention has the following beneficial effects: the cold heading shaping of stainless steel's takeover nut can be accomplished through the mould of this application, and the shaping is convenient, and the shaping reliability is high, and the precision is up to standard, and easily production reduces the production application cost of takeover nut.
Drawings
Fig. 1 is a schematic view of the internal structure of each mold in the present invention.
Fig. 2 is a schematic structural view of a nipple nut produced by the present invention.
Fig. 3 is a schematic view of the lower end structure of the punch pin used in the second sizing die of the present invention.
Fig. 4 is a schematic view of the lower end structure of the punch pin used in the third finishing die of the present invention.
In the figure: the transition section 3 of the connecting pipe part 2 of the hexagon body 1, the first shaping die 4, the second shaping die 5, the first circular table hole 6, the second circular table hole 7, the first hexagonal hole 8, the second hexagonal hole 9, the circular table transition hole 10, the first pre-die 11, the second pre-die 12, the second fixed die 13, the hexagonal prism hole 15, the transition chamfer 16, the circular arc hole surface 17, the thread through hole 18, the cylindrical hole 19, the transition taper hole 20, the pre-thread shaft section 21, the transition taper section 22 and the cylindrical section 23.
Detailed Description
The invention is further illustrated with reference to the accompanying drawings and specific examples.
In the case of the example 1, the following examples are given,
as shown in fig. 1 to 4, the die for the connecting pipe nut is used for cold heading forming of the stainless steel connecting pipe nut, the connecting pipe nut comprises a hexagon body 1 and a connecting pipe part 2, a transition section 3 is arranged between the hexagon body 1 and the connecting pipe part 2, and the transition section 3 is matched with a circular truncated cone transition hole 10 in a first shaping die 4 and a second shaping die 5 for forming. The die for the connecting pipe nut comprises a hexagon forming die and a connecting pipe forming die which are sequentially arranged, the connecting pipe forming die comprises a first whole die 4 and a second whole die 5 which are sequentially arranged, a first circular truncated cone hole 6 and a second circular truncated cone hole 7 are respectively arranged in the first whole die 4 and the second whole die 5, the height of the first circular truncated cone hole 6 is smaller than that of the second circular truncated cone hole 7, and the taper angle degrees of the first circular truncated cone hole 6 and the second circular truncated cone hole 7 are equal. The hexagonal body moulded die is including setting gradually first premould 11, second premould 12, first cover half 13 and second cover half 14, the horizontal size and the longitudinal dimension homogeneous phase in the inside shaping hole of 11 inside shaping holes of first premoulds and the inside shaping hole of second premould 12 are the same, the horizontal size and the longitudinal dimension homogeneous phase in the inside shaping hole of first cover half 13 and the inside shaping hole of second cover half 14, the horizontal size in the inside shaping hole of first cover half 13 is greater than the horizontal size in the inside shaping hole of 11 first premoulds, the longitudinal dimension in the inside shaping hole of first cover half 13 is greater than the longitudinal dimension in the inside shaping hole of 11 first premoulds. The inner forming holes of the first pre-mold 11, the second pre-mold 12, the first fixed mold 13 and the second fixed mold 14 respectively comprise hexagonal prism holes 15, transition chamfers 16 are arranged in the hexagonal prism holes 15, arc hole surfaces 17 are arranged at the lower ends of the hexagonal prism holes 15, and the heights of the hexagonal prism holes 15 of the first pre-mold 11, the second pre-mold 12, the first fixed mold 13 and the second fixed mold 14 are equal.
Be equipped with first hexagonal hole 8 in the first whole mould 4, be equipped with second hexagonal hole 9 in the second whole mould 5, the lower extreme of first hexagonal hole 8 and second hexagonal hole 9 is equipped with round platform transition hole 10 respectively, and first round platform hole 6 sets up the lower extreme in the round platform transition hole 10 in first whole mould 4, and second round platform hole 7 sets up the lower extreme in the round platform transition hole 10 in the second whole mould 5. The cone angle of the circular truncated cone transition hole 10 is larger than that of the first circular truncated cone hole 6, namely the cone angle of the circular truncated cone transition hole 10 is larger than that of the second circular truncated cone hole 7. The height from the lower end of the circular truncated cone transition hole 10 in the first shaping die 4 to the upper end surface of the first shaping die 4 is equal to the height from the lower end of the circular truncated cone transition hole 10 in the second shaping die 5 to the upper end surface of the second shaping die 5. The height from the lower end of the circular truncated cone transition hole 10 in the first shaping die 4 to the upper end face of the first shaping die 4 is equal to the height of the hexagonal prism hole 15.
Be equipped with screw thread through-hole 18 in the hexagon body 1, be equipped with cylinder hole 19 in the extension portion 2 outer end, be equipped with transition taper hole 20 between cylinder hole 19 and the screw thread through-hole 18, the used needle that dashes of second integer mould 5 is the step shaft shape of corresponding screw thread through-hole 18, transition taper hole 20 and cylinder hole 19, the used needle that dashes of first integer mould 4 includes threaded shaft section 21 in advance, transition taper section 22 and cylinder section 23, the diameter of threaded shaft section 21 in advance is less than the diameter of screw thread through-hole 18, the height of transition taper section 22 is less than the size of transition taper hole 20, the height of cylinder section 23 is less than the height of cylinder hole 19. Further, the lower end structure of the punching needle used by the first shaping die 4 and the lower end structure of the punching needle used by the second shaping die 5 are similar structures with the same structure and different sizes.
In the case of the example 2, the following examples are given,
a method for forming a connecting pipe nut based on the die is characterized by comprising the following steps:
A. preparing materials, namely preparing stainless steel cylindrical materials with determined specifications;
B. performing the hexagon body 1, performing cold heading on a cylindrical material by a first pre-mold 11 and a second pre-mold 12 in sequence to complete performing of the hexagon body 1, wherein the first pre-mold 11 and the second pre-mold 12 correspond to two end surfaces of a connecting pipe nut respectively, and forming a pre-through hole in the connecting pipe nut;
C. shaping the hexagon 1, wherein the hexagon 1 raw material finished in the step B is subjected to cold heading by a first fixed die 13 and a second fixed die 14 in sequence to finish shaping the hexagon 1, the first fixed die 13 and the second fixed die 14 respectively correspond to two end surfaces of the connecting pipe nut, and pre-through holes in the connecting pipe nut are synchronously expanded and shaped;
D. and (3) forming the pipe connecting part 2, and cold heading the pipe connecting nut formed by the hexagon body 1 through a first die and a second die sequentially to finish forming the pipe connecting part 2.
Through the disclosed mould of this application, utilize the hexagonal body moulded die to accomplish the shaping back of hexagonal body 1, loop through the round platform hole in first integer mould 4 and the second integer mould 5, accomplish the upsetting-out of connecting pipe portion 2, the shaping is convenient, and easy to produce can adopt stainless steel to make the connecting pipe nut, and the connecting pipe nut reliability after the shaping is high, and the precision is up to standard, and manufacturing cost especially material cost reduces.
Claims (9)
1. The utility model provides a take over mould for nut, characterized by for stainless steel's takeover nut cold-heading shaping, including the hexagon moulded die and the takeover portion moulded die that set gradually, takeover portion moulded die is including the first whole mould and the second whole mould that set gradually, and the inside of first whole mould and second whole mould is equipped with first round platform hole and second round platform hole respectively, and the height in first round platform hole is less than second round platform hole, and the cone angle number of degrees in first round platform hole and second round platform hole equals.
2. A die for a connecting tube nut as claimed in claim 1, wherein the hexagon body forming die comprises a first pre-die, a second pre-die, a first fixed die and a second fixed die which are arranged in sequence, the transverse dimension and the longitudinal dimension of the forming hole inside the first pre-die and the forming hole inside the second pre-die are the same, the transverse dimension and the longitudinal dimension of the forming hole inside the first fixed die and the forming hole inside the second fixed die are the same, the transverse dimension of the forming hole inside the first fixed die is larger than the transverse dimension of the forming hole inside the first pre-die, and the longitudinal dimension of the forming hole inside the first fixed die is larger than the longitudinal dimension of the forming hole inside the first pre-die.
3. The die for the connecting tube nut as claimed in claim 2, wherein a first hexagonal hole is formed in the first shaping die, a second hexagonal hole is formed in the second shaping die, the lower ends of the first hexagonal hole and the second hexagonal hole are respectively provided with a circular truncated cone transition hole, the first circular truncated cone hole is formed in the lower end of the circular truncated cone transition hole in the first shaping die, and the second circular truncated cone hole is formed in the lower end of the circular truncated cone transition hole in the second shaping die.
4. A die for a connecting tube nut as claimed in claim 3, wherein the internal forming holes of the first pre-die, the second pre-die, the first fixed die and the second fixed die each comprise a hexagonal prism hole, the hexagonal prism hole is provided with a transition chamfer, the lower end of the hexagonal prism hole is provided with a circular arc hole surface, and the heights of the hexagonal prism holes of the first pre-die, the second pre-die, the first fixed die and the second fixed die are equal.
5. A die for a connecting tube nut as claimed in claim 3 or 4, wherein the height from the lower end of the transitional hole of the inner circular truncated cone of the first shaping die to the upper end face of the first shaping die is equal to the height from the lower end of the transitional hole of the inner circular truncated cone of the second shaping die to the upper end face of the second shaping die.
6. A tube connecting nut die as claimed in claim 4, wherein the height from the lower end of the circular truncated cone transition hole in the first shaping die to the upper end face of the first shaping die is equal to the height of the hexagonal prism hole.
7. A die for a nipple nut as claimed in claim 3, wherein the taper angle of said frustoconical transition bore is greater than the taper angle of said first frustoconical bore.
8. A die for a connecting tube nut as claimed in claim 1, wherein the connecting tube nut comprises a hexagon body and a connecting tube part, a threaded through hole is formed in the hexagon body, a cylindrical hole is formed in the outer end of the connecting tube part, a transition taper hole is formed between the cylindrical hole and the threaded through hole, the punch pin used by the second shaping die is in a stepped shaft shape corresponding to the threaded through hole, the transition taper hole and the cylindrical hole, the punch pin used by the first shaping die comprises a pre-threaded shaft section, a transition taper section and a cylindrical section, the diameter of the pre-threaded shaft section is smaller than that of the threaded through hole, the height of the transition taper section is smaller than that of the transition taper hole, and the height of the cylindrical section is smaller than that of the cylindrical hole.
9. A method for forming a nipple nut using the die for a nipple nut as claimed in any one of claims 1 to 8, comprising the steps of:
A. preparing materials, namely preparing stainless steel cylindrical materials with determined specifications;
B. performing a hexagon, performing cold heading on a cylindrical material by a first pre-mold and a second pre-mold in sequence to complete the performing of the hexagon, wherein the first pre-mold and the second pre-mold correspond to two end surfaces of a connecting pipe nut respectively, and a pre-through hole is formed in the connecting pipe nut;
C. shaping the hexagon, namely completing the shaping of the hexagon through cold heading of a first fixed die and a second fixed die in sequence, wherein the first fixed die and the second fixed die respectively correspond to two end surfaces of the connecting pipe nut, and pre-through holes in the connecting pipe nut are synchronously expanded and shaped;
D. and (4) forming the pipe connecting part, namely performing cold heading on the first die and the second die in sequence to finish forming the pipe connecting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210093003.9A CN114589282B (en) | 2022-01-26 | 2022-01-26 | Die for connecting pipe nut and forming method based on die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210093003.9A CN114589282B (en) | 2022-01-26 | 2022-01-26 | Die for connecting pipe nut and forming method based on die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114589282A true CN114589282A (en) | 2022-06-07 |
| CN114589282B CN114589282B (en) | 2023-07-04 |
Family
ID=81804434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210093003.9A Active CN114589282B (en) | 2022-01-26 | 2022-01-26 | Die for connecting pipe nut and forming method based on die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114589282B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD216393A1 (en) * | 1983-06-03 | 1984-12-12 | Waelzlager Normteile Veb | METHOD AND DEVICE FOR PRODUCING NUTS |
| CN103909205A (en) * | 2012-12-29 | 2014-07-09 | 宾科汽车紧固件（昆山）有限公司 | Cold heading device and process for pipe nuts |
| CN104209702A (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 nut and production technique of cold-heading device |
| KR101996076B1 (en) * | 2019-01-10 | 2019-07-03 | 윤명옥 | Apparatus and method for manufacturing SUS cap nut by cold forging |
| KR102142098B1 (en) * | 2020-02-11 | 2020-08-06 | 태화정밀공업(주) | Method of making a hose-joint nipple |
| CN111687370A (en) * | 2020-06-22 | 2020-09-22 | 浙江明泰控股发展股份有限公司 | Forming process and forming device of cap nut |
| CN112496222A (en) * | 2020-11-25 | 2021-03-16 | 宾科汽车紧固件（昆山）有限公司 | Cold-heading device, nut and clamping jaw assembly that nut was used |
| CN112719189A (en) * | 2020-12-29 | 2021-04-30 | 苏州工业园区新凯精密五金有限公司 | Nut cold heading die and forming process |
| CN215144333U (en) * | 2020-11-25 | 2021-12-14 | 宾科汽车紧固件（昆山）有限公司 | Cold-heading device, nut and clamping jaw assembly that nut was used |
-
2022
- 2022-01-26 CN CN202210093003.9A patent/CN114589282B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD216393A1 (en) * | 1983-06-03 | 1984-12-12 | Waelzlager Normteile Veb | METHOD AND DEVICE FOR PRODUCING NUTS |
| CN103909205A (en) * | 2012-12-29 | 2014-07-09 | 宾科汽车紧固件（昆山）有限公司 | Cold heading device and process for pipe nuts |
| CN104209702A (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 nut and production technique of cold-heading device |
| KR101996076B1 (en) * | 2019-01-10 | 2019-07-03 | 윤명옥 | Apparatus and method for manufacturing SUS cap nut by cold forging |
| KR102142098B1 (en) * | 2020-02-11 | 2020-08-06 | 태화정밀공업(주) | Method of making a hose-joint nipple |
| CN111687370A (en) * | 2020-06-22 | 2020-09-22 | 浙江明泰控股发展股份有限公司 | Forming process and forming device of cap nut |
| CN112496222A (en) * | 2020-11-25 | 2021-03-16 | 宾科汽车紧固件（昆山）有限公司 | Cold-heading device, nut and clamping jaw assembly that nut was used |
| CN215144333U (en) * | 2020-11-25 | 2021-12-14 | 宾科汽车紧固件（昆山）有限公司 | Cold-heading device, nut and clamping jaw assembly that nut was used |
| CN112719189A (en) * | 2020-12-29 | 2021-04-30 | 苏州工业园区新凯精密五金有限公司 | Nut cold heading die and forming process |
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| Publication number | Publication date |
|---|---|
| CN114589282B (en) | 2023-07-04 |
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