CN103934398A - High-strength cold forging die of skirt type self-locking hexagonal nut - Google Patents
High-strength cold forging die of skirt type self-locking hexagonal nut Download PDFInfo
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- CN103934398A CN103934398A CN201310026188.2A CN201310026188A CN103934398A CN 103934398 A CN103934398 A CN 103934398A CN 201310026188 A CN201310026188 A CN 201310026188A CN 103934398 A CN103934398 A CN 103934398A
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- die
- punch
- skirt
- locking
- cold forging
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Abstract
The invention discloses a high-strength cold forging die of a skirt type self-locking hexagonal nut. The high-strength cold forging die of the skirt type self-locking hexagonal nut comprises a die seat (7), a female die (4) and a male die (3), the female die is arranged in the middle of the upper end of the die seat, and a middle ring (5) and an outer ring (6) are sequentially arranged outside the female die (4). A male die sleeve (2) and a male die positioning sleeve (1) are sequentially arranged outside the male die (3), and a male die cushion block (9) is arranged at the upper end of the male die (3). The male die (3) and the male die sleeve (2) extend into the upper section of an inner cavity of the female die (4), the upper end of a piece ejection device (8) which is arranged in the die seat (7) extends into the lower section of the inner cavity of the female die (4), and the rest of the inner cavity of the female die (4) constitutes a blank flowing space. The materials of the skirt type self-locking hexagonal nut which is subjected to cold closed-die forging of the die are good in compactness, metal fibers are continuously distributed from a hexagonal body to a skirt, and thus the toughness of products is improved.
Description
Technical field
The present invention relates to fine forging technology field, be specifically related to a kind of cold forging die that forges high strength skirt formula self-locking six square nuts.
Background technology
Domestic anti-back high strength six square nuts on the market at present, as Fig. 1, this class nut does not have skirt, at one end in six aspects, has six to cross between two the anti-back slot that Central Symmetry communicates, and groove depth accounts for 1/3 of nut overall length; Its processing technology is that machined milling system forms.If according to the straight step skirt of above-mentioned processes short cylindrical as shown in Figure 2 formula anti-back high-strength nut, its manufacturability is bad, the skirt fiber that in machined, six aspects connect is broken by milling, and intensity is bad, and stressed skirt can the distortion of surrender property when large.Existing processing technology is not more suitable for processing self-locking six square nuts as shown in Figure 3, comprise skirt and cap body, cap structure is equal to existing anti-back high strength six square nut structures, skirt lower surface is designed to the face of a certain amount of recessed heart energy self-locking, 45 ° of circular cones of the straight step switching of short cylindrical form skirt, 45 ° of circular cones form powerful supporting to short cylindrical, and the carrying of skirt end face and self-lock ability are strengthened.
The patent No. is in the patent documentation of ZL200310103515.6, a kind of continuously extruding and molding method of manufacturing self lock nut in cold forging mode is disclosed, its self lock nut comprises nut body and a grappling bead, wherein has in the inside of nut body and grappling bead the internal thread hole running through; The top end face of nut body forms a shoulder and forms tooth portion in upright arrangement along the circumferential outer surface of bead; When extrusion modling, recontour and become the dressing process of preliminary dimension in finishing shaping dies successively; Bead preformed process in bead preforming tool; Bead adjustment and tooth portion forming process in bead adjustment and tooth portion mould; Punch process.In above-mentioned forming method, relate to the mould of several operations.
Summary of the invention
The invention technical problem to be solved is to provide a kind of cold-forging technique and manufactures the mould that high strength skirt formula self-locking six square nuts use.
The invention is for solving the problems of the technologies described above, by the following technical solutions:
The cold forging die of high strength skirt formula self-locking six square nuts, comprises die holder, die and punch, and described die is arranged on die holder upper center, and die sets gradually outward as centre circle and outer ring; Punch sets gradually outward as punch case and punch positioning sleeve, and punch upper end is provided with punch cushion block; Punch and punch case extend into die inner chamber epimere, and die inner chamber hypomere is stretched in the ejector upper end being arranged in die holder, and the vacant inner chamber of die forms the blank flowing space.
Further, the straight step switching skirt of circular cone of the short cylindrical of described die inwall axial cross section shape and moulding forging and the axial cross section form fit of hexahedron cap body.
Blank, through cold closed-die forging mould, is shaped to skirt, skirt recessed heart lower surface and the hexahedron cap body of the straight step switching of short cylindrical circular cone.
Owing to having adopted technique scheme, the invention has following beneficial effect:
1, mould forging and stamping are raw materials used becomes the high strength locking nut process for machining of six side's band round platform rank skirt formulas than saving raw material with milling after car, improved the utilization rate of material.
2, with similar band step circular skirt seat formula anti-back high-strength nut ratio, through the good compactness of the skirt formula self-locking six square nut materials of mold cold finish forge, metallic fiber is from hexahedron to skirt continuous distributed, improve the toughness of product, skirt bearing capacity and self-lock force that particularly the external 45 ° of cones in hexahedron lower end connect short cylindrical formation have strengthened, fatigue resistance has improved, and improved service life.
Brief description of the drawings
Fig. 1 is the structural representation of the high-strength locking nut of standard;
Fig. 2 is the structural representation of the high-strength anti-back degree of step circular skirt seat formula nut;
Fig. 3 is skirt formula self-locking six square nut structural representations;
Fig. 4 is the structural representation of the skirt formula self-locking six square nut cold-forge forming bases of herbal classic innovation and creation cold forging die forging;
Fig. 5 is the invention cold closed-die forging forming die structure schematic diagram;
Detailed description of the invention
In conjunction with Fig. 5, cold closed-die forging mould comprises die holder 7, die 4 and punch 3, and die is arranged on die holder upper center, and die 4 is outer to be set gradually as centre circle 5 and outer ring 6; Punch 3 is outer to be set gradually as punch case 2 and punch positioning sleeve 1, and punch 3 upper ends are provided with punch cushion block 9; Punch 3 and punch case 2 extend into die 4 inner chamber epimeres, and die 4 inner chamber hypomeres are stretched in ejector 8 upper ends that are arranged in die holder 7, and the vacant inner chamber of die 4 forms the blank flowing space.The straight step switching skirt of circular cone of short cylindrical and the axial cross section form fit of hexahedron cap body of die 4 inwall axial cross section shapes and moulding forging.
In conjunction with Fig. 4, blank carries out cold closed-die forging and is shaped eventually in mould, is shaped to skirt, skirt recessed heart lower surface and the hexahedron cap body of the straight step switching of short cylindrical circular cone.
In the whole forming process of cold closed-die forging, in blank centre bore, have high strength plug location, make the concentricity of skirt formula self-locking six square nut profiles and mesopore very good, all profiles are without carrying out machined again.
Blank, entering before mould, is lubricated oil and applies, and the friction that has alleviated blank and mould in the time of cold forging, makes blank Plastic Forming smoothness, and product shape is full attractive in appearance, has extended the service life of mould.
Claims (2)
1. the cold forging die of high strength skirt formula self-locking six square nuts, comprise die holder (7), die (4) and punch (3), it is characterized in that: described die is arranged on die holder upper center, die (4) is outer to be set gradually as centre circle (5) and outer ring (6); Punch (3) is outer to be set gradually as punch case (2) and punch positioning sleeve (1), and punch (3) upper end is provided with punch cushion block (9); Punch (3) and punch case (2) extend into die (4) inner chamber epimere, die (4) inner chamber hypomere is stretched in ejector (8) upper end being arranged in die holder (7), and the vacant inner chamber of die (4) forms the blank flowing space.
2. the cold forging die of high strength skirt formula self-locking according to claim 1 six square nuts, is characterized in that: the straight step switching skirt of circular cone of short cylindrical and the axial cross section form fit of hexahedron cap body of described die (4) inwall axial cross section shape and moulding forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310026188.2A CN103934398A (en) | 2013-01-20 | 2013-01-20 | High-strength cold forging die of skirt type self-locking hexagonal nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310026188.2A CN103934398A (en) | 2013-01-20 | 2013-01-20 | High-strength cold forging die of skirt type self-locking hexagonal nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103934398A true CN103934398A (en) | 2014-07-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310026188.2A Pending CN103934398A (en) | 2013-01-20 | 2013-01-20 | High-strength cold forging die of skirt type self-locking hexagonal nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103934398A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141060A (en) * | 2016-08-25 | 2016-11-23 | 厦门同恒金属有限公司 | A kind of cold forging punch die of the little component of rod category of molding major part |
| CN108380805A (en) * | 2018-02-08 | 2018-08-10 | 江苏海宇机械有限公司 | The fine forging forming die of direction machine bolt |
| CN113649512A (en) * | 2021-08-09 | 2021-11-16 | 宁波固强机械有限公司 | Mold for manufacturing automobile inner bushing and manufacturing method of automobile inner bushing |
| CN113649512B (en) * | 2021-08-09 | 2024-04-19 | 宁波固强机械有限公司 | Mold for manufacturing automobile lining sleeve and automobile lining sleeve manufacturing method |
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| EP0663247A1 (en) * | 1993-12-17 | 1995-07-19 | Yugenkaisha Shinjo Seisakusho | Apparatus for making self-piercing nuts |
| CN101332489A (en) * | 2008-08-01 | 2008-12-31 | 上海东芙冷锻制造有限公司 | Cold-forging precise forming technique of gear sleeve |
| JP2010099772A (en) * | 2008-10-23 | 2010-05-06 | Shinjo Mfg Co Ltd | Method of manufacturing welding nut made of stainless steel sheet and blanking punch used for the same |
| CN201969822U (en) * | 2011-01-28 | 2011-09-14 | 浙江万金机械有限公司 | Screw nut forging die |
| CN202062032U (en) * | 2010-12-17 | 2011-12-07 | 徐福广 | Cold forging die device of self-locking screw cap and self-locking screw cap produced thereof |
| CN202137312U (en) * | 2011-06-20 | 2012-02-08 | 重庆创精温锻成型有限公司 | Cold-extrusion die for output spline shaft of automobile automatic transmission |
| CN202174202U (en) * | 2011-07-06 | 2012-03-28 | 江苏威鹰机械有限公司 | Cold-forging forming female die for ball basket universal joint bell housing |
| CN202343830U (en) * | 2011-11-15 | 2012-07-25 | 洛阳秦汉冷锻有限公司 | Die for forging and installing a dissimilar metal composite piston |
| CN103071754A (en) * | 2013-01-18 | 2013-05-01 | 洛阳秦汉冷锻有限公司 | Cold forging process of high-strength skirt-type self-locking hexagonal screw cap |
| CN203124620U (en) * | 2013-01-20 | 2013-08-14 | 洛阳秦汉冷锻有限公司 | Cold forging mould for high-intensity skirt base type self-locking hexagonal nuts |
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2013
- 2013-01-20 CN CN201310026188.2A patent/CN103934398A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0663247A1 (en) * | 1993-12-17 | 1995-07-19 | Yugenkaisha Shinjo Seisakusho | Apparatus for making self-piercing nuts |
| CN1109393A (en) * | 1993-12-17 | 1995-10-04 | 新城制作所有限公司 | Apparatus for making self-piercing nuts |
| CN101332489A (en) * | 2008-08-01 | 2008-12-31 | 上海东芙冷锻制造有限公司 | Cold-forging precise forming technique of gear sleeve |
| JP2010099772A (en) * | 2008-10-23 | 2010-05-06 | Shinjo Mfg Co Ltd | Method of manufacturing welding nut made of stainless steel sheet and blanking punch used for the same |
| CN202062032U (en) * | 2010-12-17 | 2011-12-07 | 徐福广 | Cold forging die device of self-locking screw cap and self-locking screw cap produced thereof |
| CN201969822U (en) * | 2011-01-28 | 2011-09-14 | 浙江万金机械有限公司 | Screw nut forging die |
| CN202137312U (en) * | 2011-06-20 | 2012-02-08 | 重庆创精温锻成型有限公司 | Cold-extrusion die for output spline shaft of automobile automatic transmission |
| CN202174202U (en) * | 2011-07-06 | 2012-03-28 | 江苏威鹰机械有限公司 | Cold-forging forming female die for ball basket universal joint bell housing |
| CN202343830U (en) * | 2011-11-15 | 2012-07-25 | 洛阳秦汉冷锻有限公司 | Die for forging and installing a dissimilar metal composite piston |
| CN103071754A (en) * | 2013-01-18 | 2013-05-01 | 洛阳秦汉冷锻有限公司 | Cold forging process of high-strength skirt-type self-locking hexagonal screw cap |
| CN203124620U (en) * | 2013-01-20 | 2013-08-14 | 洛阳秦汉冷锻有限公司 | Cold forging mould for high-intensity skirt base type self-locking hexagonal nuts |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141060A (en) * | 2016-08-25 | 2016-11-23 | 厦门同恒金属有限公司 | A kind of cold forging punch die of the little component of rod category of molding major part |
| CN108380805A (en) * | 2018-02-08 | 2018-08-10 | 江苏海宇机械有限公司 | The fine forging forming die of direction machine bolt |
| CN108380805B (en) * | 2018-02-08 | 2023-11-24 | 江苏海宇机械有限公司 | Precision forging forming die for steering gear bolt |
| CN113649512A (en) * | 2021-08-09 | 2021-11-16 | 宁波固强机械有限公司 | Mold for manufacturing automobile inner bushing and manufacturing method of automobile inner bushing |
| CN113649512B (en) * | 2021-08-09 | 2024-04-19 | 宁波固强机械有限公司 | Mold for manufacturing automobile lining sleeve and automobile lining sleeve manufacturing method |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20140723 |