CN114589282B - 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
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- CN114589282B CN114589282B CN202210093003.9A CN202210093003A CN114589282B CN 114589282 B CN114589282 B CN 114589282B CN 202210093003 A CN202210093003 A CN 202210093003A CN 114589282 B CN114589282 B CN 114589282B
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- die
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- forming
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 19
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 18
- 239000010935 stainless steel Substances 0.000 claims abstract description 18
- 230000007704 transition Effects 0.000 claims description 54
- 238000007493 shaping process Methods 0.000 claims description 30
- 238000004080 punching Methods 0.000 claims description 5
- 210000002445 nipple Anatomy 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 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
- 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
- 238000001125 extrusion Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001360 synchronised effect 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 utility model 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 cold heading forming method has the advantages that cold heading forming of the stainless steel connecting pipe nut can be realized, the formed connecting pipe nut is high in reliability and standard in precision, 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 connecting pipe nut processing, in particular to a die for a connecting pipe nut and a forming method based on the die.
Background
The connecting pipe nut comprises a hexagon and a connecting pipe portion, a threaded hole is formed in the hexagon, and a cylindrical hole with the size smaller than that of the threaded hole is formed in the connecting pipe portion to finish connecting pipe. The connecting pipe nut is commonly used in the fields of air conditioning refrigeration and the like, and the connecting pipe of the inner and outer machines of the split air conditioner is mostly in a connecting pipe nut and copper pipe bell mouth structure and is fixed through interference fit between the pipe joint and the end face of the connecting pipe nut. The union nut is usually made of copper for reasons of corrosion resistance and its special construction.
For example, in chinese patent literature, patent number CN201520165254.9 issued patent on day 23, 9 of 2019, which discloses a take-over nut and a split air conditioner. The connecting pipe nut is used for being matched with the connecting pipe, the connecting pipe nut comprises a nut section, a taper hole section, a through hole section and a through hole lengthening section which are sequentially connected, and the connecting pipe is arranged in the through hole section and the through hole lengthening section in a penetrating mode.
The prior art has the following defects: the connecting pipe nut is usually formed by adopting copper materials, has low hardness, poor reliability and easy deformation; copper is more 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 cold heading forming stainless steel connecting pipe nut of the existing die is low, and machining defects are easy to occur.
Disclosure of Invention
Based on the defects in the prior art, the utility model provides the die for the connecting pipe nut and the forming method based on the die, which can realize cold heading forming of the connecting pipe nut made of stainless steel, and the formed connecting pipe nut has high reliability, meets the standard of precision, is easy to produce and reduces the application cost of the connecting pipe nut.
In order to achieve the above object, the present utility model adopts the following technical scheme.
The utility model provides a mould for take over nut, characterized by for stainless steel's take over nut cold heading shaping, including hexagon moulded die and the take over portion moulded die that sets gradually, take over portion moulded die is equipped with first round platform hole and second round platform hole respectively including the first integer mould and the second integer mould that set gradually, the inside of first integer mould and second integer mould, and the height of first round platform hole is less than the second round platform hole, and the cone angle degree of first round platform hole and second round platform hole equals.
Through the mould that this application disclosed, after utilizing the hexagonal moulded die to accomplish the hexagonal shaping, loop through the round platform hole in first integer mould and the second integer mould, accomplish the upset out of taking over the pipe portion, the shaping is convenient, easily production can adopt stainless steel to make take over the nut, and take over the nut reliability after the shaping is high, manufacturing cost especially material cost reduces.
Preferably, the hexagonal 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 dimensions of the first pre-die inner forming hole and the second pre-die inner forming hole are the same as the longitudinal dimensions, the transverse dimensions of the first fixed die inner forming hole and the second fixed die inner forming hole are the same as the longitudinal dimensions, the transverse dimension of the first fixed die inner forming hole is larger than the transverse dimension of the first pre-die inner forming hole, and the longitudinal dimension of the first fixed die inner forming hole is larger than the longitudinal dimension of the first pre-die inner forming hole. The transition process of the workpiece from the pre-mold to the fixed mold is shortened and transversely enlarged, so that the forming reliability of the hexagon is ensured.
Preferably, a first hexagonal hole is formed in the first integer die, a second hexagonal hole is formed in the second integer 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 integer die, and the second round platform hole is formed in the lower end of the round platform transition hole in the second integer die. The setting of round platform transitional hole is hexagonal lower extreme and changes to take over the portion and provide the transition for take over the nut and can take over the portion shaping in place when the shaping, take over the mould of nut among the prior art and do not have this changeover portion, and stainless steel material's intensity is high, and difficult deformation easily appears the defect in cold heading, this is the unique design that this application goes on in order to accomplish stainless steel take over the cold heading shaping of nut, can improve stainless steel material and take over the shaping precision of nut.
Preferably, the inner forming holes of the first pre-mold, the second pre-mold, the first fixed mold and the second fixed mold comprise hexagonal prism holes, the hexagonal prism holes are provided with transition chamfers, the lower ends of the hexagonal prism holes are provided with arc hole surfaces, 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 hole is used as the main body part of the connecting pipe nut, so that the overall accuracy of the connecting pipe nut is ensured, the height of the hexagonal prism hole is kept unchanged in each hexagonal forming die, the variable is controlled, and the forming accuracy of the hexagonal body is improved.
Preferably, the height from the lower end of the circular truncated cone transition hole in the first integer die to the upper end surface of the first integer die is equal to the height from the lower end of the circular truncated cone transition hole in the second integer die to the upper end surface of the second integer die. And the cold heading precision of the transition surface of the hexagonal prism and the round table is ensured.
Preferably, the height from the lower end of the truncated cone transition hole in the first integer die to the upper end surface of the first integer die is equal to the height of the hexagonal prism hole. The transition section formed outside the connecting pipe nut through the round table transition hole is formed on the basis of the hexagonal prism hole, the forming position is reliable, and the follow-up extrusion upsetting of the connecting pipe part from the hexagon is facilitated.
Preferably, the cone angle of the truncated cone transition hole is larger than that of the first truncated cone hole. Ensure that the round platform transition hole has reliable material guiding capability, and facilitate the upsetting of the stainless steel connecting pipe nut.
Preferably, the connecting pipe nut comprises a hexagon and a connecting pipe part, a threaded through hole is formed in the hexagon, 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 punch pin used for the second whole 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 for the first whole 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. Synchronous forming of the inner hole of the connecting pipe nut is completed through the punching pins on the first integer die and the second integer die, subsequent drilling is not needed, and forming efficiency of the connecting pipe nut is improved.
The forming method of the connecting pipe nut based on the die is characterized by comprising the following steps of:
A. preparing a material, namely preparing a cylindrical material made of stainless steel with a certain specification;
B. performing hexagon, namely sequentially cold heading the cylindrical material through a first pre-die and a second pre-die to finish the hexagon, wherein the first pre-die and the second pre-die respectively correspond to two end faces of the connecting pipe nut, and forming a pre-through hole in the connecting pipe nut;
C. the method comprises the steps of shaping a hexagon, namely completing shaping of the hexagon through cold heading of a first fixed die and a second fixed die sequentially, wherein the first fixed die and the second fixed die respectively correspond to two end faces of a connecting pipe nut, and a pre-through hole in the connecting pipe nut is synchronously enlarged and shaped;
D. and forming the connecting pipe part, namely sequentially carrying out cold heading through the first integer die and the second integer die, and finishing forming the connecting pipe part.
Can accomplish the cold heading shaping of the takeover nut of stainless steel material through the mould of this application, the shaping is convenient, and shaping reliability is high.
The utility model has the following beneficial effects: can accomplish the cold heading shaping of the takeover nut of stainless steel material through the mould of this application, the shaping is convenient, and shaping reliability is high, and the precision is up to standard, 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 utility model.
Fig. 2 is a schematic structural view of the union nut produced by the present utility model.
Fig. 3 is a schematic view of the lower end structure of the punch pin used in the second die according to the present utility model.
Fig. 4 is a schematic view of the lower end structure of the punch pin used in the first die according to the present utility model.
In the figure: the novel pipe connecting device comprises a hexagon 1, a pipe connecting part 2, a transition section 3, a first integer die 4, a second integer die 5, a first round table hole 6, a second round table hole 7, a first hexagonal hole 8, a second hexagonal hole 9, a round table transition hole 10, a first premold 11, a second premold 12, a first fixed die 13, a second fixed die 14, a hexagonal prism hole 15, a transition chamfer 16, an arc hole surface 17, a threaded through hole 18, a cylindrical hole 19, a transition taper hole 20, a pre-threaded shaft section 21, a transition taper section 22 and a cylindrical section 23.
Detailed Description
The utility model is further illustrated in the following, in conjunction with the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1 to 4, a mold for a connecting pipe nut is used for cold heading forming of a connecting pipe nut made of stainless steel, the connecting pipe nut comprises a hexagon 1 and a connecting pipe part 2, a transition section 3 is arranged between the hexagon 1 and the connecting pipe part 2, and the transition section 3 is matched with round platform transition holes 10 in a first integer mold 4 and a second integer mold 5 for forming. The die for the connecting pipe nut comprises a hexagon forming die and a connecting pipe portion forming die which are sequentially arranged, the connecting pipe portion forming die comprises a first integer die 4 and a second integer die 5 which are sequentially arranged, a first round platform hole 6 and a second round platform hole 7 are respectively formed in the first integer die 4 and the second integer die 5, the height of the first round platform hole 6 is smaller than that of the second round platform hole 7, and the cone angle degrees of the first round platform hole 6 and the second round platform hole 7 are equal. The hexagonal forming die comprises a first pre-die 11, a second pre-die 12, a first fixed die 13 and a second fixed die 14 which are sequentially arranged, the transverse dimension and the longitudinal dimension of the internal forming hole of the first pre-die 11 and the internal forming hole of the second pre-die 12 are the same, the transverse dimension and the longitudinal dimension of the internal forming hole of the first fixed die 13 and the internal forming hole of the second fixed die 14 are the same, the transverse dimension of the internal forming hole of the first fixed die 13 is larger than the transverse dimension of the internal forming hole of the first pre-die 11, and the longitudinal dimension of the internal forming hole of the first fixed die 13 is larger than the longitudinal dimension of the internal forming hole of the first pre-die 11. The internal forming holes of the first pre-mold 11, the second pre-mold 12, the first fixed mold 13 and the second fixed mold 14 comprise hexagonal prism holes 15, the hexagonal prism holes 15 are provided with transition chamfers 16, the lower ends of the hexagonal prism holes 15 are provided with arc hole surfaces 17, 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.
The first shaping die 4 is internally provided with a first hexagonal hole 8, the second shaping die 5 is internally provided with a second hexagonal hole 9, the lower ends of the first hexagonal hole 8 and the second hexagonal hole 9 are respectively provided with a round platform transition hole 10, the first round platform hole 6 is arranged at the lower end of the round platform transition hole 10 in the first shaping die 4, and the second round platform hole 7 is arranged at the lower end of the round platform transition hole 10 in the second shaping die 5. The cone angle of the truncated cone transition hole 10 is larger than that of the first truncated cone hole 6, i.e. the cone angle of the truncated cone transition hole 10 is larger than that of the second truncated cone hole 7. The height from the lower end of the circular platform transition hole 10 in the first integer mould 4 to the upper end surface of the first integer mould 4 is equal to the height from the lower end of the circular platform transition hole 10 in the second integer mould 5 to the upper end surface of the second integer mould 5. The height from the lower end of the circular platform transition hole 10 in the first whole die 4 to the upper end surface of the first whole die 4 is equal to the height of the hexagonal prism hole 15.
The hexagonal body 1 is internally provided with a threaded through hole 18, the outer end of the connecting pipe part 2 is internally provided with a cylindrical hole 19, a transition taper hole 20 is arranged between the cylindrical hole 19 and the threaded through hole 18, a punching needle used by the second integer die 5 is in a stepped shaft shape corresponding to the threaded through hole 18, the transition taper hole 20 and the cylindrical hole 19, the punching needle used by the first integer die 4 comprises a pre-threaded shaft section 21, a transition taper section 22 and a cylindrical section 23, the diameter of the pre-threaded shaft section 21 is smaller than that of the threaded through hole 18, the height of the transition taper section 22 is smaller than that of the transition taper hole 20, and the height of the cylindrical section 23 is smaller than that of the cylindrical hole 19. Further, the lower end structure of the punch pin used by the first integer die 4 and the lower end structure of the punch pin used by the second integer die 5 are similar structures with the same structure and different sizes.
Example 2
The forming method of the connecting pipe nut based on the die is characterized by comprising the following steps of:
A. preparing a material, namely preparing a cylindrical material made of stainless steel with a certain specification;
B. preforming the hexagon 1, namely cold heading cylindrical materials sequentially through a first preforming die 11 and a second preforming die 12 to finish preforming the hexagon 1, wherein the first preforming die 11 and the second preforming die 12 respectively correspond to two end faces of a connecting pipe nut, and a pre-through hole is formed in the connecting pipe nut;
C. the hexagon 1 is shaped, raw materials of the hexagon 1 finished in the step B are subjected to cold heading sequentially through a first fixed die 13 and a second fixed die 14, the shaping of the hexagon 1 is finished, the first fixed die 13 and the second fixed die 14 correspond to two end faces of a connecting pipe nut respectively, and pre-through holes in the connecting pipe nut are expanded and shaped synchronously;
D. and forming the connecting pipe part 2, and sequentially cold-upsetting the connecting pipe nut formed by the hexagon 1 through the first integer die 4 and the second integer die 5 to finish forming the connecting pipe part 2.
Through the mould that this application disclosed, after utilizing the hexagonal moulded die to accomplish hexagon 1 shaping, loops through the round platform hole in first integer mould 4 and the second integer mould 5, accomplishes the upset out of takeover portion 2, and the shaping is convenient, easily production, can adopt stainless steel to make takeover nut, and takeover nut reliability after the shaping is high, and the precision is up to standard, and manufacturing cost especially material cost reduces.
Claims (5)
1. The die for the connecting pipe nut is characterized by comprising a hexagon forming die and a connecting pipe part forming die which are sequentially arranged, wherein the connecting pipe part forming die comprises a first integer die and a second integer die which are sequentially arranged, a first round platform hole and a second round platform hole are respectively formed in the first integer die and the second integer die, the height of the first round platform hole is smaller than that of the second round platform hole, and the cone angle degrees of the first round platform hole and the second round platform hole are equal; the hexagonal 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 dimensions of the first pre-die inner forming hole and the second pre-die inner forming hole are the same as the longitudinal dimensions, the transverse dimensions of the first fixed die inner forming hole and the second fixed die inner forming hole are the same as the longitudinal dimensions, the transverse dimension of the first fixed die inner forming hole is larger than the transverse dimension of the first pre-die inner forming hole, and the longitudinal dimension of the first fixed die inner forming hole is larger than the longitudinal dimension of the first pre-die inner forming hole; the first shaping die is internally provided with a first hexagonal hole, the second shaping die is internally provided with a second hexagonal hole, the lower ends of the first hexagonal hole and the second hexagonal hole are respectively provided with a round platform transition hole, the first round platform hole is arranged at the lower end of the round platform transition hole in the first shaping die, and the second round platform hole is arranged at the lower end of the round platform transition hole in the second shaping die; the inner forming holes of the first pre-mold, the second pre-mold, the first fixed mold and the second fixed mold comprise hexagonal prism holes, transition chamfers are arranged on 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 connecting pipe nut comprises a hexagon and a connecting pipe portion, a threaded through hole is formed in the hexagon, a cylindrical hole is formed in the outer end of the connecting pipe portion, a transition taper hole is formed between the cylindrical hole and the threaded through hole, a punching needle used for the second whole die is in a stepped shaft shape corresponding to the threaded through hole, the transition taper hole and the cylindrical hole, the punching needle used for the first whole 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.
2. The die for connecting pipe nuts according to claim 1, wherein the height from the lower end of the circular truncated cone transition hole in the first integer die to the upper end face of the first integer die is equal to the height from the lower end of the circular truncated cone transition hole in the second integer die to the upper end face of the second integer die.
3. The die for connecting pipe nuts according to claim 1, wherein the height from the lower end of the truncated cone transition hole in the first integral die to the upper end face of the first integral die is equal to the height of the hexagonal prism hole.
4. The die for a take-over nut according to claim 1, wherein the taper angle of the round-table transition hole is larger than the taper angle of the first round-table hole.
5. A method of forming a nipple nut based on the die for a nipple nut according to any one of claims 1 to 4, characterized by comprising the steps of:
A. preparing a material, namely preparing a cylindrical material made of stainless steel with a certain specification;
B. performing hexagon, namely sequentially cold heading the cylindrical material through a first pre-die and a second pre-die to finish the hexagon, wherein the first pre-die and the second pre-die respectively correspond to two end faces of the connecting pipe nut, and forming a pre-through hole in the connecting pipe nut;
C. the method comprises the steps of shaping a hexagon, namely completing shaping of the hexagon through cold heading of a first fixed die and a second fixed die sequentially, wherein the first fixed die and the second fixed die respectively correspond to two end faces of a connecting pipe nut, and a pre-through hole in the connecting pipe nut is synchronously enlarged and shaped;
D. and forming the connecting pipe part, namely sequentially carrying out cold heading through the first integer die and the second integer die, and finishing forming the connecting pipe 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 CN114589282A (en) | 2022-06-07 |
| CN114589282B true CN114589282B (en) | 2023-07-04 |
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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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114589282A (en) | 2022-06-07 |
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