CN105598645A - Cold forging technology of nut plate - Google Patents
Cold forging technology of nut plate Download PDFInfo
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- CN105598645A CN105598645A CN201610055054.7A CN201610055054A CN105598645A CN 105598645 A CN105598645 A CN 105598645A CN 201610055054 A CN201610055054 A CN 201610055054A CN 105598645 A CN105598645 A CN 105598645A
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- forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention relates to a cold forging technology of a nut plate. The technology comprises the following steps: (1) blanking; (2) annealing; (3) carrying out surface treatment; (4) reshaping; (5) punching; (6) carrying out rough forging; (7) carrying out precision forging; (8) reshaping again. When the material of a workpiece is metal having lower hardness, rough forging is carried out for 1-2 times; when the material of the workpiece is metal having higher hardness, rough forging is carried out for 5-8 times. The cold forging technology has the beneficial effects that the technology is simple to operate and has simplified steps; in the processing process, the phenomenon of material waste is greatly reduced; the nut plate processed by the technology is higher in strength, high in production efficiency and easy to popularize.
Description
Technical field
The present invention relates to a kind of nutplate cold-forging technique.
Background technology
Cold die forging,Cold extrusion, the plastic working such as cold-heading general designation. Cold forging is that material is tied againProcessing and forming below brilliant temperature is the forging of carrying out below recovery temperature. In production, practiseBe used to call cold forging not heating the forging that blank carries out. Cold forging material is to be mostly out of shape under room temperatureDrag is less, the good aluminium of plasticity and alloy part, copper and alloy part, mild steel, inCarbon steel, low-alloy structural steel. Cold forging surface quality is good,Dimensional accuracyHeight, can replace oneA bitMachining. Cold forging can make metal strengthening, improves the intensity of part.
Cold closed-die forging is a kind of (closely) clean shape forming technology. The part that adopts the method to be shaped is strongDegree and precision are high, and surface quality is good. The cold forging part that general car of present adopts is totalAmount 40～45kg, more than wherein Tooth Profile Parts total amount reaches 10kg. The gear list of cold-forging formingMore than part weight can reach 1kg, profile accuracy can reach 7 grades.
Continual process innovation has promoted the development of cold extruding technique, 80 years 20th centurySince generation, both at home and abroad precision forging expert start by shunting forge theory be applied to spur gear withThe cold-forging forming of helical gear. The cardinal principle that shunting is forged is the shaping at blank or mouldPart is set up shunting chamber or the split channel of a material. In forging process, material is being full ofWhen die cavity, part material flows to shunting chamber or split channel. Answering of shunting FMTWith, make degree of precision gear less, reached rapidly industrialized scale without machining. RightThe extrusion that is 5 in draw ratio, as piston pin, what adopt axial clout piece extensively passes through axleCan realize cold extrusion once-forming to shunting, and the stability of punch is fine; For flatThe spur gear of flat class is shaped, and adopts clout piece radially also can realize the cold-extrusion shaping of product.
Block forging is in sealingDieThe interior unidirectional or subtend extruding by one or two driftMetal one-time is shaped, and obtains the near clean shape fine forge piece of non-trimming. Some car precision components asIf planet and axle shaft gear, inner race, cross-bearing etc. adopt cutting working method, noOnly stock utilization very low (on average less than 40%), and it is many to expend man-hour, production costHigh. The external block forging technology that adopts is produced these clean shape Forgings, saves the overwhelming majority and cutsCut processing, cost significantly reduces.
The development of Cold forging is mainly exploitation high value-added product, reduces production costs,Meanwhile, it also constantly to cutting,Powder metallurgy, casting,Forge hot, sheet forming workThe field such as skill infiltration or replace, also can with these technique formation combination process that combines.Forge hot-cold forging compound plasticity shaping technology is a kind of new essence that forge hot and cold forging are combinedClose metal forming technology, it takes full advantage of forge hot and cold forging advantage separately: hot lower goldBelong to plasticity good, flow stress is low, and therefore main deformation process completes with forge hot; Cold forgingThe precision of part is high, and therefore the significant dimensions of part is carried out final formation of parts with cold-forging technique. HeatForging-cold forging compound plasticity shaping technology comes across the eighties in 20th century, since the nineties, has gotObtained more and more widely application, with the part of this technology manufacture, obtained precision raising,The good result of cost.
Auto manufacturing's development rapidly, can be used very in automobile manufacturing process in the world at presentMany nutplate, traditional nutplate is on sheet material, to carry out tapping to become nutplate, generalSheet material can not reach the intensity of nut, uses high-intensity sheet material processing, and its difficulty of processingGreatly, also can waste more material, can not meet modern people's demand, therefore be badly in need of onePlant improved technology and solve above-mentioned technological deficiency.
Summary of the invention
The invention provides a kind of nutplate cold-forging technique.
The present invention is directed to the technical scheme that above-mentioned technological deficiency proposes is:
A kind of nutplate cold-forging technique, comprises the following steps:
(1) blanking: the blanking procedure that carries out as requested blank;
(2) annealing: adopt pit type annealing furnace to vacuumize and inflated with nitrogen protection annealing;
(3) surface treatment: the blank of annealing is carried out to pickling, washing, phosphatization processing, windCold and saponification processing;
(4) shaping: carry out the flatness finishing of workpiece by shaping mould;
(5) punching: need the position of processing to stamp out telescopic hole on workpiece;
(6) rough forge: need the position of processing repeatedly to forge and press processing on workpiece, to stretchingShrinkage cavity edge forges and presses, and makes the thickness attenuation of working position workpiece, and simultaneous retractable hole diminishes,Until telescopic hole disappears;
(7) finish forge: the workpiece after rough forge is carried out to finish forge, working position is repaired.
(8) shaping again: the workpiece of finish forge is carried out to shaping again, repair its flatness.
When workpiece material is the less metal of hardness, rough forge number of times is 1-2 time, workpiece materialThe time rough forge number of times larger for hardness is 5-8 time.
Described telescopic hole diameter need be according to workpiece working position final thickness and workpiece working positionArea calculates.
The invention has the beneficial effects as follows: technological operation is simple, step is simplified, in processThe middle wasting phenomenon that can greatly reduce material, the nutplate after processing has higher intensity,Production efficiency is high, is easy to promote.
Detailed description of the invention
A kind of nutplate cold-forging technique, comprises the following steps:
(1) blanking: the blanking procedure that carries out as requested blank;
(2) annealing: adopt pit type annealing furnace to vacuumize and inflated with nitrogen protection annealing;
(3) surface treatment: the blank of annealing is carried out to pickling, washing, phosphatization processing, windCold and saponification processing;
(4) shaping: carry out the flatness finishing of workpiece by shaping mould;
(5) punching: need the position of processing to stamp out telescopic hole on workpiece;
(6) rough forge: need the position of processing repeatedly to forge and press processing on workpiece, to stretchingShrinkage cavity edge forges and presses, and makes the thickness attenuation of working position workpiece, and simultaneous retractable hole diminishes,Until telescopic hole disappears;
(7) finish forge: the workpiece after rough forge is carried out to finish forge, working position is repaired.
(8) shaping again: the workpiece of finish forge is carried out to shaping again, repair its flatness.
When workpiece material is the less metal of hardness, rough forge number of times is 1-2 time, workpiece materialThe time rough forge number of times larger for hardness is 5-8 time. Telescopic hole diameter need be according to workpiece processing departmentPosition final thickness and workpiece working position area calculate. Technological operation is simple, and step is simplified,The wasting phenomenon that can greatly reduce material in process, the nutplate after processing has moreHigh intensity, production efficiency is high, is easy to promote.
Claims (3)
1. a nutplate cold-forging technique, is characterized in that, comprises the following steps:
(1) blanking: the blanking procedure that carries out as requested blank;
(2) annealing: adopt pit type annealing furnace to vacuumize and inflated with nitrogen protection annealing;
(3) surface treatment: by the blank of annealing carry out pickling, washing, phosphatization processing, air-cooled withAnd saponification processing;
(4) shaping: carry out the flatness finishing of workpiece by shaping mould;
(5) punching: need the position of processing to stamp out telescopic hole on workpiece;
(6) rough forge: need the position of processing repeatedly to forge and press processing on workpiece, to telescopic holeEdge forges and presses, and makes the thickness attenuation of working position workpiece, and simultaneous retractable hole diminishes, straightDisappear to telescopic hole;
(7) finish forge: the workpiece after rough forge is carried out to finish forge, working position is repaired.
(8) shaping again: the workpiece of finish forge is carried out to shaping again, repair its flatness.
2. a kind of nutplate cold-forging technique according to claim 1, is characterized in that workpieceWhen material is the less metal of hardness, rough forge number of times is 1-2 time, workpiece material be hardnessWhen large, rough forge number of times is 5-8 time.
3. a kind of nutplate cold-forging technique according to claim 1, is characterized in that, described inTelescopic hole diameter need calculate according to workpiece working position final thickness and workpiece working position area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610055054.7A CN105598645A (en) | 2016-01-27 | 2016-01-27 | Cold forging technology of nut plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610055054.7A CN105598645A (en) | 2016-01-27 | 2016-01-27 | Cold forging technology of nut plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105598645A true CN105598645A (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610055054.7A Pending CN105598645A (en) | 2016-01-27 | 2016-01-27 | Cold forging technology of nut plate |
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| CN (1) | CN105598645A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026749A (en) * | 2019-05-28 | 2019-07-19 | 嘉兴远信五金科技股份有限公司 | A kind of hollow nut processing technology |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000202721A (en) * | 1999-04-06 | 2000-07-25 | Nsk Ltd | Manufacture of universal joint fork |
| CN101391368A (en) * | 2008-10-30 | 2009-03-25 | 江苏森威精锻有限公司 | Processing method of deep-hole pin bush parts |
| CN101780628A (en) * | 2010-03-08 | 2010-07-21 | 苏州工业园区新凯精密五金有限公司 | Processing process for compressing and riveting nuts |
| CN102091913A (en) * | 2010-12-19 | 2011-06-15 | 镇江中虎弹簧有限公司 | Thread machining process of striker nut plate |
| 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 |
| CN102688966A (en) * | 2011-03-24 | 2012-09-26 | 比亚迪股份有限公司 | Cold forging method and metal housing processing method |
| CN104526278A (en) * | 2014-12-08 | 2015-04-22 | 台州钻煌汽车零部件有限公司 | Cold forging process for star-shaped sleeve |
-
2016
- 2016-01-27 CN CN201610055054.7A patent/CN105598645A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000202721A (en) * | 1999-04-06 | 2000-07-25 | Nsk Ltd | Manufacture of universal joint fork |
| CN101391368A (en) * | 2008-10-30 | 2009-03-25 | 江苏森威精锻有限公司 | Processing method of deep-hole pin bush parts |
| CN101780628A (en) * | 2010-03-08 | 2010-07-21 | 苏州工业园区新凯精密五金有限公司 | Processing process for compressing and riveting nuts |
| CN102091913A (en) * | 2010-12-19 | 2011-06-15 | 镇江中虎弹簧有限公司 | Thread machining process of striker nut plate |
| CN102688966A (en) * | 2011-03-24 | 2012-09-26 | 比亚迪股份有限公司 | Cold forging method and metal housing processing method |
| 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 |
| CN104526278A (en) * | 2014-12-08 | 2015-04-22 | 台州钻煌汽车零部件有限公司 | Cold forging process for star-shaped sleeve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026749A (en) * | 2019-05-28 | 2019-07-19 | 嘉兴远信五金科技股份有限公司 | A kind of hollow nut processing technology |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160525 |