CN103624205A - Cold-forging plastic molding technology of precisely-forged brake threaded pipe component - Google Patents
Cold-forging plastic molding technology of precisely-forged brake threaded pipe component Download PDFInfo
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- CN103624205A CN103624205A CN201310639316.0A CN201310639316A CN103624205A CN 103624205 A CN103624205 A CN 103624205A CN 201310639316 A CN201310639316 A CN 201310639316A CN 103624205 A CN103624205 A CN 103624205A
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Abstract
The invention discloses a cold-forging plastic molding technology of a precisely-forged brake threaded pipe component. The cold-forging plastic molding technology comprises the following steps of material cutting, annealing, blank making, shot-blasting, phosphorus saponifying processing, cold-forging reverse extrusion, annealing, shot-blasting, phosphorus saponifying processing and cold-forging cavity molding. Milling processing is not required by the technology, cold reverse extrusion and molding procedures are instantly finished, the production efficiency is high, the processing cost is low, the raw material is saved, the metal streamline of the material is complete and is not cut off, milling marks are not left on the surface, the product quality is stable, the comprehensive mechanical performance is high, both the accuracy and the strength of the product are ensured, the operation quantity of machine processing is reduced, and the development trend of modern world manufacturing industry is met.
Description
Technical field
The invention belongs to metalwork forging forming technical field, relate to brake screwed pipe production technology.
Background technology
Automotive brake screwed pipe is the vital part in brake assembly, the effect of brake screwed pipe bearing hydraulic, to its accuracy of manufacture and bulk strength, require very high, brake screwed pipe is a kind of male-pipe, its inner chamber complex structure, general employing selected the direct Vehicle Processing of bar at present, then the Milling Process of holing inner chamber and bottom, this kind of method production efficiency is low, waste raw material, production cost is high, particularly because raw material metal streamline is cut off, comprehensive mechanical performance is reduced, and can not adapt to current manufacturing development trend.
Summary of the invention
The present invention is directed to existing machined and manufacture the deficiency of brake screwed pipe inner chamber structure, mainly solve existing conventional machining process, machine tool drops into more, machining has been wasted metal material, product comprehensive mechanical performance reduces, the production cycle is long, the technical problem that processing cost is high, provides a kind of brake screwed pipe fine forge piece cold forging plasticity moulding process for brake screwed pipe inner chamber structure.
The present invention is achieved by the following technical solution:
Brake screwed pipe fine forge piece cold forging plasticity moulding process, comprises the following steps:
A, fracture: intercepting metal bar;
B, annealing: isothermal spheroidizing, 770 ± 5 ℃ of insulation 4h of heating-up temperature, then temperature drops to 680 ± 5 ℃ of insulation 5h, cools to 350 ℃ with the furnace and comes out of the stove below;
C, base: turning, end face, chamfering;
D, ball blast: blank is put into shot-blasting machine blasting treatment, remove surperficial tool marks, reduce roughness Ra value;
E, phospholeumization are processed: blank carries out phosphatization saponification processing, increase surface lubrication;
F, cold forging backward extrusion: blank is put into die, cold forging anti-extrusion brake screwed pipe tube body and bar portion under normal temperature condition, making tube body is the tubular structure of hollow, its upper end open, lower end closed; Bar portion is arranged on tube body lower end closed end, and tube body and bar portion are overall structure;
G, annealing, ball blast, phospholeumization are processed: blank is delivered to shaft furnace and anneal, 680 ℃ ± 5 ℃ insulation 3.5h of heating-up temperature, eliminate internal stress, then carry out ball blast, phospholeumization processing;
H, cold forging inner chamber moulding: blank is put into inner chamber molding concave die, cold forging extrusion modling brake screwed pipe tube body cavity shape under normal temperature condition, tube body inwall forms different large of diameter, small circular structure, with their changeover portion, large circular configuration is positioned at tube body upper end open place, on tube body inwall, along openend to blind end, be also evenly provided with five arc grooves, the large corresponding tube body inwall of circular configuration is extended with groove downwards along openend, described groove is distributed between two arc grooves, the length of described groove along openend to downward-extension is less than the corresponding tube body inwall of large circular configuration length.
Described cold forging backward extrusion step can repeatedly operate repeatedly, finally makes the tubular structure of tube body formation hollow, its upper end open, lower end closed; Bar portion is arranged on tube body lower end closed end, and tube body and bar portion are overall structure.
Before cold forging backward extrusion step, also comprise jumping-up compression step and ball blast, phospholeum treatment step; Described jumping-up compression step is above-mentioned blank to be put into heading die carry out jumping-up extruding, makes the blank upper end after jumping-up form positioning chamber, lower end formation bar portion leader.
Beneficial effect of the present invention: the present invention is applied to the manufacture of brake screwed pipe by metal plastic forming technology, main moulding screwed pipe inner chamber structure, reduce follow-up machining, saved resource and processing technology is simple, the metal streamline of material is complete not to be cut off, and constant product quality, interior tissue density is high, comprehensive mechanical performance good, production efficiency is high, can meet required precision, reduce again manufacturing cost, also meet the trend of world today's development of manufacturing simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the upward view of Fig. 1;
Fig. 4 is blank deformation flow chart in embodiment of the present invention brake screwed pipe fine forge piece cold forging plasticity moulding process.
Sequence number in figure: 1, tube body, 2, bar portion, 3, large circular configuration, 4, small circular structure, 5, changeover portion, 6, arc groove, 7, groove, 8, positioning chamber, 9, bar portion leader.
The specific embodiment
Below by embodiment, and in conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, technical scheme of the present invention is described in further detail.
Embodiment mono-: shown in Fig. 1, Fig. 2 and Fig. 3, a kind of brake screwed pipe fine forge piece, comprises tube body 1 and bar portion 2, the tubular structure that tube body 1 is hollow, its upper end open, lower end closed; Bar portion 2 is arranged on tube body 1 lower end closed end, and tube body 1 and bar portion 2 are overall structure; Tube body 1 inwall is the different large and small circular configuration of diameter 3,4 and their changeover portion 5, and large circular configuration 3 is positioned at tube body 1 upper end open place, on tube body 1 inwall, along openend to blind end, is also evenly provided with five arc grooves 6; The large corresponding tube body inwall of circular configuration 3 is extended with groove 7 downwards along openend, described groove 7 is distributed between two arc grooves 6, between two described arc grooves 6, be evenly equipped with two grooves 7, the length of described groove 7 along openend to downward-extension is less than the corresponding tube body inwall of large circular configuration 3 length.
Referring to Fig. 4, this brake screwed pipe fine forge piece cold forging plasticity moulding process, comprises the following steps:
1. blanking: press design drawing and select 16MnCr5 bar, with the blanking of saw bed;
2. isothermal spheroidizing: pieces of bar stock is sent to shaft furnace and carries out isothermal spheroidizing, 770 ± 5 ℃ of insulation 4h of heating-up temperature, then temperature drops to 680 ± 5 ℃ of insulation 5h, cools to 350 ℃ with the furnace and comes out of the stove below;
3. base: press design drawing turning, end face and chamfering;
4. ball blast: blank is put into shot-blasting machine blasting treatment, remove surperficial tool marks, reduce roughness Ra value;
5. phospholeumization is processed: blank carries out phosphatization saponification processing, increases surface lubrication;
6. jumping-up extruding: above-mentioned blank is put into heading die and carry out jumping-up extruding, make the blank upper end after jumping-up form positioning chamber 8, lower end formation bar portion leader 9;
7. ball blast: put the good blank of jumping-up into shot-blasting machine and carry out Shot Blasting, remove oxide on surface;
8. phospholeumization is processed: blank surface is carried out phospholeum processing, increases surface lubrication;
9. cold forging backward extrusion: blank is put into die, under normal temperature condition, substep carries out cold forging backward extrusion step, to prevent that crackle from appearring in blank, and the pre-tube body of moulding brake screwed pipe and bar portion 2, making pre-tube body is the tubular structure of hollow, its upper end open, lower end closed; Bar portion 2 is arranged on pre-tube body lower end closed end, and pre-tube body and bar portion 2 are overall structure;
10. process annealing: blank is delivered to shaft furnace and anneal, 680 ℃ ± 5 ℃ insulation 3.5h of heating-up temperature, eliminate internal stress;
11. ball blasts: blank is put Caterpillar type shot blasting machine into and carried out Shot Blasting, remove surface oxide layer;
12. phospholeumizations are processed: blank surface is carried out phospholeum processing, guarantee surface lubrication;
13. pullings: blank inner hole sleeve is on punch, and die moves down extrusion billet cylindrical with forcing press work, metal is made the pre-tube body of axial flow pulling brake screwed pipe;
14. process annealings: blank is delivered to well furnace, 680 ℃ ± 5 ℃ of heating-up temperatures, eliminate internal stress;
15. ball blasts: blank is put in shot-blasting machine and carried out Shot Blasting, remove surface oxide layer;
16. phospholeumizations are processed: blank surface is carried out phospholeum processing, guarantee surface lubrication;
17. cold forging inner chamber moulding: under normal temperature condition by blank inner hole sleeve on the punch with alley, circular die moves down extrusion billet cylindrical with forcing press work, metal is done axially, Radial Flow, pull out profile and the cavity shape of moulding brake screwed pipe tube body 1 simultaneously, its cavity shape is: tube body 1 inwall forms the different large and small circular configuration 3,4 of diameter and their changeover portion 5, large circular configuration 3 is positioned at tube body 1 opening part, on tube body 1 inwall, along openend to blind end, is also evenly provided with five arc grooves 6; The large corresponding tube body inwall of circular configuration 3 is extended with groove 7 along openend to blind end direction, described groove 7 is distributed between two arc grooves 6, between two described arc grooves 6, be evenly equipped with two grooves 7, the length of described groove 7 along openend to downward-extension is less than the corresponding tube body inwall of large circular configuration 3 length.
Adopt cold extrusion plastic molding method, pieces of metal bar stock is sent to shaft furnace and carries out isothermal spheroidizing, 770 ± 5 ℃ of insulation 4h of heating intensity, then temperature drops to 680 ± 5 ℃ of insulation 5h, blank interior tissue is transformed into pearl pearlitic structrure by lamellar pearlite and network cementite, wherein cementite is spherical particle and is distributed on ferrite matrix, nodularization rate >=90%, hardness≤78HRB, then ball blast, phospholeumization are processed, under normal temperature condition through repeatedly reaching screwed pipe inner chamber structure moulding object after cold extrusion plastic deformation.Adopt technique scheme, do not need to carry out Milling Process, cold extrusion is instead squeezed, molding procedure is all to complete moment, and production efficiency is high, and processing cost is low, save raw material, the metal streamline of material is complete not to be cut off, and surface is without milling mark, constant product quality, comprehensive mechanical performance increases, and precision and the intensity of product are all guaranteed.
Embodiment is just for the ease of understanding technical scheme of the present invention; do not form limiting the scope of the invention; every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present invention, above scheme being done that does not depart from technical solution of the present invention, within all still belonging to protection domain of the present invention.
Claims (3)
1. brake screwed pipe fine forge piece cold forging plasticity moulding process, comprises the following steps:
A, fracture: intercepting metal bar;
B, annealing: isothermal spheroidizing, 770 ± 5 ℃ of insulation 4h of heating-up temperature, then temperature drops to 680 ± 5 ℃ of insulation 5h, cools to 350 ℃ with the furnace and comes out of the stove below;
C, base: turning, end face, chamfering;
D, ball blast: blank is put into shot-blasting machine blasting treatment, remove surperficial tool marks, reduce roughness Ra value;
E, phospholeumization are processed: blank carries out phosphatization saponification processing, increase surface lubrication;
F, cold forging backward extrusion: blank is put into die, under normal temperature condition cold forging anti-extrusion brake screwed pipe tube body (1) with bar portion (2), making tube body is (1) the tubular structure of hollow, its upper end open, lower end closed; (2) bar portion is arranged on (1) lower end closed end of tube body, and (2) (1) tube body be overall structure with bar portion;
G, annealing, ball blast, phospholeumization are processed: blank is delivered to shaft furnace and anneal, 680 ℃ ± 5 ℃ insulation 3.5h of heating-up temperature, eliminate internal stress, then carry out ball blast, phospholeumization processing;
H, cold forging inner chamber moulding: blank is put into inner chamber molding concave die, (1) cavity shape of cold forging extrusion modling brake screwed pipe tube body under normal temperature condition, tube body (1) inwall forms different large of diameter, small circular structure (3), with they changeover portion (5), (3) large circular configuration is positioned at (1) upper end open place of tube body, (6) (1) tube body be also evenly provided with five arc grooves along openend to blind end on inwall, large circular configuration (3) corresponding tube body (1) inwall along openend, be extended with groove downwards (7), described groove be (7) distributed on two arc grooves (6) between, the described groove (7) length along openend to downward-extension is less than (3) corresponding tube body inwall length of large circular configuration.
2. brake screwed pipe fine forge piece cold forging plasticity moulding process according to claim 1, it is characterized in that: described cold forging backward extrusion step can repeatedly operate repeatedly, finally make tube body (1) form the tubular structure of hollow, its upper end open, lower end closed; (2) bar portion is arranged on (1) lower end closed end of tube body, and (2) (1) tube body be overall structure with bar portion.
3. brake screwed pipe fine forge piece cold forging plasticity moulding process according to claim 1 and 2, is characterized in that: before cold forging backward extrusion step, also comprise jumping-up compression step and ball blast, phospholeum treatment step; Described jumping-up compression step is above-mentioned blank to be put into heading die carry out jumping-up extruding, make blank upper end after jumping-up form positioning chamber (8), (9) lower end form bar portion leader.
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| CN201310639316.0A CN103624205A (en) | 2013-12-04 | 2013-12-04 | Cold-forging plastic molding technology of precisely-forged brake threaded pipe component |
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| CN201310639316.0A CN103624205A (en) | 2013-12-04 | 2013-12-04 | Cold-forging plastic molding technology of precisely-forged brake threaded pipe component |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909384A (en) * | 2014-03-24 | 2014-07-09 | 大丰市中德精锻件有限公司 | Cold extrusion molding process of drill pipe connecting sleeve |
| CN104466605A (en) * | 2014-12-05 | 2015-03-25 | 江苏威鹰机械有限公司 | Technology for manufacturing wiring terminal of new energy automobile electronic control system |
| CN106862879A (en) * | 2017-01-23 | 2017-06-20 | 江苏创汽车零部件有限公司 | A kind of cold-forging forming technique of the hollow output shaft with flange |
| CN108284137A (en) * | 2017-12-25 | 2018-07-17 | 常州市胜彪标准件模具有限公司 | A kind of cold extruding processing method of machine components shape requirement straight slot |
| CN108857283A (en) * | 2018-07-19 | 2018-11-23 | 宁波固远管件有限公司 | A kind of engine fuel injection system tappet body multiple step format cold-extrusion technology |
| CN114713653A (en) * | 2022-03-24 | 2022-07-08 | 上海工程技术大学 | Machining method and forming die assembly for long rod part with threaded teeth for vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040025688A1 (en) * | 2002-08-12 | 2004-02-12 | Koekenberg Leonardus Gerhardus P. | Method and tools for manufacturing a master cylinder for a brake system, and cylinder manufactured therewith |
| CN101422861A (en) * | 2008-11-27 | 2009-05-06 | 江苏森威精锻有限公司 | Precision forming method for special-shaped deep hole parts |
| CN102350615A (en) * | 2011-08-19 | 2012-02-15 | 江苏森威精锻有限公司 | Shunt blocking forming method for star-shaped sleeve |
| CN102397964A (en) * | 2010-09-10 | 2012-04-04 | 江苏威鹰机械有限公司 | Energy accumulator shell forging process |
-
2013
- 2013-12-04 CN CN201310639316.0A patent/CN103624205A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040025688A1 (en) * | 2002-08-12 | 2004-02-12 | Koekenberg Leonardus Gerhardus P. | Method and tools for manufacturing a master cylinder for a brake system, and cylinder manufactured therewith |
| CN101422861A (en) * | 2008-11-27 | 2009-05-06 | 江苏森威精锻有限公司 | Precision forming method for special-shaped deep hole parts |
| CN102397964A (en) * | 2010-09-10 | 2012-04-04 | 江苏威鹰机械有限公司 | Energy accumulator shell forging process |
| CN102350615A (en) * | 2011-08-19 | 2012-02-15 | 江苏森威精锻有限公司 | Shunt blocking forming method for star-shaped sleeve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909384A (en) * | 2014-03-24 | 2014-07-09 | 大丰市中德精锻件有限公司 | Cold extrusion molding process of drill pipe connecting sleeve |
| CN104466605A (en) * | 2014-12-05 | 2015-03-25 | 江苏威鹰机械有限公司 | Technology for manufacturing wiring terminal of new energy automobile electronic control system |
| CN104466605B (en) * | 2014-12-05 | 2016-08-24 | 江苏威鹰机械有限公司 | New-energy automobile electric-control system terminals manufacturing process |
| CN106862879A (en) * | 2017-01-23 | 2017-06-20 | 江苏创汽车零部件有限公司 | A kind of cold-forging forming technique of the hollow output shaft with flange |
| CN106862879B (en) * | 2017-01-23 | 2019-03-22 | 江苏创一汽车零部件有限公司 | A kind of cold-forging forming technique of the hollow output shaft with flange |
| CN108284137A (en) * | 2017-12-25 | 2018-07-17 | 常州市胜彪标准件模具有限公司 | A kind of cold extruding processing method of machine components shape requirement straight slot |
| CN108857283A (en) * | 2018-07-19 | 2018-11-23 | 宁波固远管件有限公司 | A kind of engine fuel injection system tappet body multiple step format cold-extrusion technology |
| CN114713653A (en) * | 2022-03-24 | 2022-07-08 | 上海工程技术大学 | Machining method and forming die assembly for long rod part with threaded teeth for vehicle |
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Application publication date: 20140312 |