CN105251933A - Cold heading forming process for heart-shaped nut and die structure for cutting head and edge - Google Patents
Cold heading forming process for heart-shaped nut and die structure for cutting head and edge Download PDFInfo
- Publication number
- CN105251933A CN105251933A CN201510768538.1A CN201510768538A CN105251933A CN 105251933 A CN105251933 A CN 105251933A CN 201510768538 A CN201510768538 A CN 201510768538A CN 105251933 A CN105251933 A CN 105251933A
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- China
- Prior art keywords
- main mould
- main
- die
- cushion block
- mould
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Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
-
- 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
- B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
- B21K27/06—Cutting-off means; Arrangements thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The invention relates to a cold heading forming process for a heart-shaped nut and a die structure for cutting the head and the edge. The process comprises the steps as follows: S1, cutting a wire rod; S2, shaping the wire rod; S3, restraining the wire rod into a heart shape; S4, stretching an inside hole; S5, upsetting the head; S6, punching through the inside hole; and S7, cutting the head and the edge. The die structure comprises a main die unit and a trimming die unit; the main die unit comprises a main die casing, an inner die of the main die and an inner cushion block of the main die; a main die thimble and a main die ejection rod are arranged in the center of the inner die of the main die and the inner cushion block of the main die; the trimming die unit comprises a trimming die casing, an edge trimming die and a trimming die cushion block; a main die ejection sleeve is arranged between the inner die of the main die and the inner cushion block of the main die; a main die spring is arranged on the outer side of the main die thimble; a main die insert is arranged inside the inner die of the main die; and a forming cavity is formed in the main die insert. A CNC (Computer Numerical Control) processing mode is not adopted; all sizes are finished by using a cold heading technology; the intactness of the flow line inside the metal is guaranteed; the strength of the product is enhanced; and the material is saved.
Description
Technical field
The present invention relates to the cold-heading technology in machinery production and manufacture field, the cold-heading molding technique especially relating to a kind of heart shaped abnormity nut and the mould structure cut in front.
Background technology
Heart shaped abnormity nut is mainly used for the sliding system of automotive seat, it usually needs multiple working procedure to process in the process of producing, after normally being forged by mould, the mach mode of CNC is adopted to carry out machine-shaping again, unnecessary waste material is removed by the mach process of CNC, reach requirement, its interior tissue of heart shaped abnormity nut of such processing does not move towards in streamline and intensity is not high, affect its mechanical property, thus reduce service life and the scope of product, and waste material is more and production efficiency is low, cause waste, thus considerably increase the production cost of product, do not meet the requirement of Reducing Cost in Enterprises.
Summary of the invention
Technical problem to be solved by this invention is to provide one and does not adopt CNC processing mode and ensure that inner flow-line is complete, is all heart shaped up and down and the cold-heading molding technique of the concentric heart shaped abnormity nut of endoporus and the mould structure that cuts in front.
The present invention solves the technical scheme that its technical problem takes: a kind of cold-heading molding technique of heart shaped abnormity nut, and described processing step is:
S1, shearing wire rod;
S2, shaping is carried out to wire rod;
S3, bundle are heart-shaped;
S4, stretching internal holes;
S5, heading;
S6, break-through endoporus;
S7, to cut in front.
Concrete further, described wire rod is through work hardening.
A kind of step S7 cuts mould structure in front, comprise main form unit and punch die unit, described main form unit comprises main formwork, main mould internal mold is provided with in described main formwork interior forward end, cushion block in main mould is provided with at described main formwork Internal back end, in described main mould internal mold and main mould, cushion block center is provided with main mould thimble and main mould push rod, described punch die unit comprises punch die shell, edger and punch die cushion block is provided with in described punch die shell inside, it is characterized in that, main mould top cover is provided with between cushion block in described main mould internal mold and main mould, main mould spring is provided with outside described main mould thimble, described main mould spring one end props up the main mould internal mold other end and props up main mould push rod, described main mould internal mold inside is provided with main mould insert, be forming cavity in described main mould insert, described punch die shell is provided with positioning screw hole, dog screw is provided with in described positioning screw hole.
Concrete further, described main formwork rear portion is provided with cushion block after main mould.
Concrete further, be provided with thimble cushion block between described main mould thimble and main mould push rod, one end of described main mould spring is against on thimble cushion block.
The invention has the beneficial effects as follows: after have employed above-mentioned technique and structure, no longer adopt the mach mode of CNC, cold-heading technology is used to complete overall dimension, the streamline of metal inside ensures that it is complete, under the complete prerequisite of the upper and lower heart shaped of guarantee, ensures that endoporus is concentric and upper heart shaped and the lower heart shaped overall depth of parallelism is less than 0.1, improve the intensity of product, save material, reduce manufacturing procedure, improve working (machining) efficiency and machining accuracy.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention;
Fig. 2 is the mold forming structure schematic diagram of step S2 of the present invention;
Fig. 3 is the mold forming structure schematic diagram of step S3 of the present invention;
Fig. 4 is the mold forming structure schematic diagram of step S4 of the present invention;
Fig. 5 is the mold forming structure schematic diagram of step S5 of the present invention;
Fig. 6 is the mold forming structure schematic diagram of step S6 of the present invention;
Fig. 7 is the mold forming structure schematic diagram of step S7 of the present invention.
1,3, punch die unit in figure:; 2,4, main form unit; 11,31, punch die shell; 12, punch die thimble; 21,41, main formwork; 22,42, main mould internal mold; 23,43, cushion block in main mould; 24,44, main mould thimble; 25,45, cushion block after main mould; 33, punch die cushion block; 34, edger; 35, positioning screw hole; 46, main mould push rod; 47, main mould insert; 48, main mould spring; 49, thimble cushion block; 410, main mould top cover.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is explained in detail.
A cold-heading molding technique for heart shaped abnormity nut as shown in Figure 1, described processing step is:
S1, shearing wire rod;
S2, shaping is carried out to wire rod;
S3, bundle are heart-shaped;
S4, stretching internal holes;
S5, heading;
S6, break-through endoporus;
S7, to cut in front.
Described wire rod is through work hardening.
A kind of mould structure cut in front in the step s 7 as shown in Figure 7, comprise main form unit 4 and punch die unit 3, described main form unit 4 comprises main formwork 41, main mould internal mold 42 is provided with in described main formwork 41 interior forward end, cushion block 43 in main mould is provided with at described main formwork 41 Internal back end, main mould thimble 44 and main mould push rod 46 is provided with cushion block 43 center in main mould at described main mould internal mold 42, described punch die unit 3 comprises punch die shell 31, edger 34 and punch die cushion block 33 is provided with in described punch die shell 31 inside, main mould top cover 410 is provided with between cushion block 43 in described main mould internal mold 42 and main mould, main mould spring 48 is provided with outside described main mould thimble 44, described main mould spring 48 one end props up main mould internal mold 42 other end and props up main mould push rod 46, described main mould internal mold 42 inside is provided with main mould insert 47, be forming cavity in described main mould insert 47, described punch die shell is provided with positioning screw hole 35, dog screw is provided with in described positioning screw hole 35, described main formwork 41 rear portion is provided with cushion block 45 after main mould, be provided with thimble cushion block 49 between described main mould thimble 44 and main mould push rod 46, one end of described main mould spring 48 is against on thimble cushion block 49.
As shown in Fig. 2 ~ Fig. 6, mould structure comprises punch die unit 1 and main form unit 2, punch die unit 1 comprises punch die shell 11 and punch die thimble 12, main form unit 2 to comprise in main formwork 21, main mould internal mold 22, main mould the composition such as cushion block 25 and main mould thimble 24 after cushion block 23, main mould, wherein cross mould to be completed by clip, all moulds are all contained on cold headers.
Punch die unit mass motion and punch die thimble pushes part enters in master cast chamber in the course of the work as shown in Figures 2 and 3; Main form unit is fixed on the machine, and main mould thimble and main mould push rod, in motion, play the effect releasing part.Punch die unit mass motion and punch die thimble pushes part enters in master cast chamber in the course of the work as shown in Figure 4; Main form unit is fixed on the machine, and main mould thimble is fixed, and main mould push rod promotes main mould three thimble and promotes the motion of main mould ejector sleeve, and main mould ejector sleeve plays the effect releasing part; Punch die unit mass motion in the course of the work as shown in Figure 5, punch die thimble is pushed back by part, is contracted in punch die unit inner, is realized by spring; Main form unit is fixed on the machine, and main mould thimble is fixed, and main mould push rod promotes main mould three thimble and promotes the motion of main mould ejector sleeve, and main mould ejector sleeve plays the effect releasing part; Punch die unit mass motion and punch die thimble pushes part enters in master cast chamber in the course of the work as shown in Figure 6; Main form unit is fixed on the machine, and main mould thimble is fixed, and main mould push rod promotes main mould three thimble and promotes the motion of main mould ejector sleeve, and main mould ejector sleeve plays the effect releasing part; Punch die unit in the course of the work can mass motion as shown in Figure 7, and main form unit is fixed on the machine, and part is positioned at main mould insert, and the edger of punch die unit carries out trimming to part, and afterwards, part ejects by main mould thimble and main mould push rod.
The mould of step S5, S6 and S7 is equipped with the aligning location structure preventing mould and parts turn, aim at location structure normally to adopt and on main formwork or punch die shell, to arrange screwed hole attachment screw carry out alignings location to main mould internal mold and punch die thimble or edger, prevent rotation.
It is emphasized that: be only preferred embodiment of the present invention above, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (5)
1. a cold-heading molding technique for heart shaped abnormity nut, is characterized in that, described processing step is:
S1, shearing wire rod;
S2, shaping is carried out to wire rod;
S3, bundle are heart-shaped;
S4, stretching internal holes;
S5, heading;
S6, break-through endoporus;
S7, to cut in front.
2. the cold-heading molding technique of heart shaped abnormity nut according to claim 1, is characterized in that, described wire rod is through work hardening.
3. in a claim 1, step S7 cuts mould structure in front, comprise main form unit (4) and punch die unit (3), described main form unit (4) comprises main formwork (41), main mould internal mold (42) is provided with in described main formwork (41) interior forward end, cushion block (43) in main mould is provided with at described main formwork (41) Internal back end, in described main mould internal mold (42) with main mould, cushion block (43) center is provided with main mould thimble (44) and main mould push rod (46), described punch die unit (3) comprises punch die shell (31), edger (34) and punch die cushion block (33) is provided with in described punch die shell (31) inside, it is characterized in that, main mould top cover (410) is provided with between cushion block (43) in described main mould internal mold (42) and main mould, main mould spring (48) is provided with in described main mould thimble (44) outside, described main mould spring (48) one end props up main mould internal mold (42) other end and props up main mould push rod (46), described main mould internal mold (42) inside is provided with main mould insert (47), be forming cavity in described main mould insert (47), described punch die shell is provided with positioning screw hole (35), dog screw is provided with in described positioning screw hole (35).
4. the mould structure cut in front according to claim 3, is characterized in that, described main formwork (41) rear portion is provided with cushion block (45) after main mould.
5. the mould structure cut in front according to claim 3, is characterized in that, is provided with thimble cushion block (49) between described main mould thimble (44) and main mould push rod (46), and one end of described main mould spring (48) is against on thimble cushion block (49).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510768538.1A CN105251933A (en) | 2015-11-12 | 2015-11-12 | Cold heading forming process for heart-shaped nut and die structure for cutting head and edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510768538.1A CN105251933A (en) | 2015-11-12 | 2015-11-12 | Cold heading forming process for heart-shaped nut and die structure for cutting head and edge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105251933A true CN105251933A (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510768538.1A Pending CN105251933A (en) | 2015-11-12 | 2015-11-12 | Cold heading forming process for heart-shaped nut and die structure for cutting head and edge |
Country Status (1)
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| CN (1) | CN105251933A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246962A (en) * | 2017-11-27 | 2018-07-06 | 苏州麦德柯金属制品工业有限公司 | The processing technology and its processing mold of a kind of rivet |
| CN109382634A (en) * | 2018-11-09 | 2019-02-26 | 宾科汽车紧固件（昆山）有限公司 | The shaping mechanism and forming method of electronic parking adjusting nut |
| CN109732031A (en) * | 2019-02-26 | 2019-05-10 | 海盐宇星螺帽有限责任公司 | A kind of automatic heating gathering apparatus |
| CN110038962A (en) * | 2019-04-02 | 2019-07-23 | 欣邦五金制品（昆山）有限公司 | A kind of molding die of quick waste discharge |
| CN110732843A (en) * | 2019-10-24 | 2020-01-31 | 刘升平 | Process for generating faucet quick-opening valve bodies |
| 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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| KR101036884B1 (en) * | 2008-07-10 | 2011-05-25 | 삼진정공(주) | Projection welding nut and manufacturing method thereof |
| CN103691874A (en) * | 2013-12-11 | 2014-04-02 | 中国航空工业标准件制造有限责任公司 | Forming method of thin-wall nut |
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| CN104493061A (en) * | 2014-12-01 | 2015-04-08 | 苏州工业园区新凯精密五金有限公司 | Cold-forging technology for safety belt transmission shaft and die structure of molded transmission patterned tooth |
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Patent Citations (7)
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| KR200403958Y1 (en) * | 2005-07-21 | 2005-12-19 | 주식회사 성진파스너 | Apparatus for manufacturing shell nut |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246962A (en) * | 2017-11-27 | 2018-07-06 | 苏州麦德柯金属制品工业有限公司 | The processing technology and its processing mold of a kind of rivet |
| CN109382634A (en) * | 2018-11-09 | 2019-02-26 | 宾科汽车紧固件（昆山）有限公司 | The shaping mechanism and forming method of electronic parking adjusting nut |
| CN109732031A (en) * | 2019-02-26 | 2019-05-10 | 海盐宇星螺帽有限责任公司 | A kind of automatic heating gathering apparatus |
| CN109732031B (en) * | 2019-02-26 | 2023-08-22 | 宇星紧固件(嘉兴)股份有限公司 | Automatic hot heading device |
| CN110038962A (en) * | 2019-04-02 | 2019-07-23 | 欣邦五金制品（昆山）有限公司 | A kind of molding die of quick waste discharge |
| CN110732843A (en) * | 2019-10-24 | 2020-01-31 | 刘升平 | Process for generating faucet quick-opening valve bodies |
| 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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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20160120 |