CN104070129A - Hot extrusion forging die for pipe with flange and deep blind taper hole shaft and forging technology thereof - Google Patents

Hot extrusion forging die for pipe with flange and deep blind taper hole shaft and forging technology thereof Download PDF

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Publication number
CN104070129A
CN104070129A CN201410248313.9A CN201410248313A CN104070129A CN 104070129 A CN104070129 A CN 104070129A CN 201410248313 A CN201410248313 A CN 201410248313A CN 104070129 A CN104070129 A CN 104070129A
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punch
die
workpiece
jumping
taper hole
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CN201410248313.9A
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CN104070129B (en
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胡圣华
郭强
胡昌军
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JINAN ZNSN MACHINERY MANUFACTURING CO LTD
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JINAN ZNSN MACHINERY MANUFACTURING CO LTD
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Abstract

The invention belongs to the technical field of workpiece forging and particularly relates to a hot extrusion forging die for a pipe with a flange and a deep blind taper hole shaft and a forging technology thereof. The hot extrusion forging die for the pipe with the flange and the deep blind taper hole shaft comprises a cavity die, a core die, a positioning flexible die and an upsetting flexible die which is matched with the core die; a die chamber of the cavity die is a two-step stepped hole and the hole diameter is reduced from top to bottom; the upper portion of the core die is in a straight cylinder shape and the lower portion is provided with taper; the positioning flexible die is provided with a through hole which is matched with the core die; the upsetting flexible die is provided with a through hole which is matched with the core die. According to the hot extrusion forging die for the pipe with the flange and the deep blind taper hole shaft, all forging procedures of the pipe with the flange and the deep blind taper hole shaft can be achieved with one device and the machining efficiency is greatly improved.

Description

A kind of hot extrusion forging mold and Forging Technology thereof of flanged dark blind taper hole central siphon
Technical field
The invention belongs to the technical field that workpiece forges, be specifically related to a kind of hot extrusion forging mold and Forging Technology thereof of flanged dark blind taper hole central siphon.
Background technology
Spindle nose, central siphon are the critical components of automobile drive axle, and press-in type spindle nose mainly contains straight barrel type and ring flange class from profile classification at present; Endoporus is divided into step through-hole, step blind hole, clear opening, straight blind hole, dark tapering through hole, dark tapering blind hole, especially the most outstanding with the forging difficulty of dark tapering blind hole.
Flanged dark blind taper hole central siphon is a kind of part with certain length, and there is ring flange one end of this part, and upper surface is flange, and lower end is taper-bored spindle.The Forging Technology difficulty of dark tapering blind hole class central siphon is large, and forging ratio is greater than 8, and the aperture of endoporus is long, upper step and bottom tapering radially than being greater than 8, thinnest part is 10mm, gross weight needs to be controlled at 37mm together.Flanged dark blind taper hole central siphon can pass through forging molding, after blanking, through heating, carries out hot extrusion on forging equipment.Is at present to set up two to four procedures separately by many forging equipments to forge to the Forging Technology of this part, drops into greatlyr, in work, have enough to meet the need clamping times many, thermal losses is fast, production efficiency is low; Well-known forging equipment and the disposable input of mould are larger, also have auxiliary for it occupation area of equipment too large, have increased very large input to forging and stamping enterprise.
Depend on manufacturing and designing of FMT product mold and Forging Technology for the height of forging technology level.Existing hot die steel principal item has H13(4Cr5MoSiV1), 9CrWMn, 3Cr2W8V, 5CrNiMo, 5CrMnMo etc.In hot die steel, be mainly wherein taking H13(4Cr5MoSiV1), 5CrNiMo is preferred material.
The project organization of mould not only embodies the quality good or not of product, also embodies the life-span of mould simultaneously.Mould structure is the major issue in forging technology.Enhancing productivity, reducing production costs is the development trend of equip forging industry, is also the target of backward extrusion technical research.
The technological difficulties of forging and stamping are the following aspects: 1, the type selecting of forcing press; 2, hot extrusion technique design, the guarantee heat treatment of blind hole position can not be ruptured; 3, the Design of Dies of hot extrusion, the life-span of consideration hot-extrusion mold.
Summary of the invention
The object of the invention is to set up two to four procedures separately for many forging equipments of FMT needs of existing flanged dark blind taper hole central siphon forges, and have enough to meet the need at work clamping repeatedly, the problem that thermal losses is fast, production efficiency is low, and provide a kind of hot extrusion forging mold and Forging Technology thereof of flanged dark blind taper hole central siphon, only need an equipment just can complete whole forging process of flanged dark blind taper-bored spindle, greatly improved working (machining) efficiency.
Technical scheme of the present invention is: a kind of hot extrusion forging mold of flanged dark blind taper hole central siphon, comprise die, punch,
Geocoded activity mould and the jumping-up movable mold matching with punch; The die cavity of die is second order stepped hole, and aperture from top to bottom diminishes; The top of punch is straight-tube shape, and bottom has tapering; Geocoded activity mould is provided with the through hole coordinating with punch; Jumping-up movable mold is provided with the through hole matching with punch.
Described punch is fixed on a upper mounting plate.
Described upper mounting plate is connected with power set and control system.
Described die is fixed on a lower platform.
Match with the lower end of geocoded activity mould, jumping-up movable mold in the aperture, top of described die die cavity.
The tapering of described punch bottom matches with the dark blind taper hole in dark blind taper hole central siphon.
Match with the flange in flanged dark blind taper hole central siphon in the lower surface of described jumping-up movable mold.
The axis of the lower surface of described jumping-up movable mold and jumping-up movable mold is perpendicular, and the axis of the lower surface of geocoded activity mould and geocoded activity mould is perpendicular.
A forging method that utilizes the hot extrusion forging mold of described flanged dark blind taper hole central siphon, specifically comprises the following steps:
(1) blanking: intercept the round steel of technological requirement length as blank workpiece;
(2) heating: the heating of blank workpiece is reached to technological requirement temperature;
(3) location: the die cavity of first workpiece that reaches requirement temperature being put into die, then geocoded activity mould is inserted to die and is pressed on workpiece, make through hole on geocoded activity mould just to punch simultaneously, punch is descending to be passed the through hole on geocoded activity mould and is pressed into workpiece, forms locating hole on workpiece;
(4) shallow punching: punch is up, takes out geocoded activity mould, and then the descending insertion locating hole of punch carries out shallow punching and makes punch insert the position of workpiece half;
(5) jumping-up moulding: punch is up, puts into jumping-up movable mold the die cavity of die and is pressed on workpiece, makes the through hole of jumping-up movable mold just to punch simultaneously, is advanced into the through hole of jumping-up movable mold under punch, and extruding workpiece, to workpiece jumping-up, suppresses ring flange; And further workpiece is pushed in deep-draw, until the hole on workpiece reaches projected depth.
Beneficial effect of the present invention is: the present invention is by two auxiliary movable mold of design, be respectively geocoded activity mould and jumping-up movable mold, , adopt geocoded activity mould auxiliary positioning when the location, geocoded activity mould can prevent from when punch from contacting with hot workpiece occuring bending and deformation, ensure the precision of hole site on workpiece, in the time of jumping-up moulding, adopt the auxiliary jumping-up moulding of jumping-up movable mold and complete dark blind taper hole simultaneously, when moulding, no longer need other extra special operations moulds, realize three forging process completes in same equipment, make workpiece in forging molding process, not need turnover, reduce thermal losses, working (machining) efficiency is high.
Brief description of the drawings
Fig. 1 is the schematic diagram that in the specific embodiment of the invention, geocoded activity mould positions.
Fig. 2 is the schematic diagram that specific embodiment of the invention convex mould carries out shallow punching.
Fig. 3 is the schematic diagram that in the specific embodiment of the invention, jumping-up movable mold is carried out jumping-up moulding.
Wherein, 1 is upper mounting plate, and 2 is punch, and 3 is geocoded activity mould, and 4 is workpiece, and 5 is die, and 6 is lower platform, and 7 is jumping-up movable mold.
Detailed description of the invention
Below by embodiment, the present invention will be described in detail.
A hot extrusion forging mold for flanged dark blind taper hole central siphon, comprises die 5, punch 2, geocoded activity mould 3 and the jumping-up movable mold 7 matching with punch 2; The die cavity of die 5 is second order stepped hole, aperture from top to bottom diminishes, aperture, top is large, aperture, bottom is little, match with the lower end of geocoded activity mould 3, jumping-up movable mold 7 in its middle upper aperture footpath, the lower end of the lower end of jumping-up movable mold 7 and geocoded activity mould 3 all can enter respectively in the upper step hole of die 5 die cavitys.The lower surface of die 5 is connected with lower platform 6.The top of punch 2 is straight-tube shape, and bottom has tapering, and this tapering matches with the dark blind taper hole in dark blind taper hole central siphon.The upper surface of punch 2 is connected with upper mounting plate 1, and this upper mounting plate 1 is connected with the power set that drive upper mounting plate 1 and the control system of controlling power set.Geocoded activity mould 3 is provided with the through hole matching with punch 2, for inserting punch 2; Jumping-up movable mold 7 is provided with the through hole matching with punch 2, for inserting punch 2.
Match with the flange in flanged dark blind taper hole central siphon in the lower surface of described jumping-up movable mold 7.
The axis of the lower surface of described jumping-up movable mold 7 and jumping-up movable mold 7 is perpendicular, and the axis of the lower surface of geocoded activity mould 3 and geocoded activity mould 3 is perpendicular.
A forging method that utilizes the hot extrusion forging mold of described flanged dark blind taper hole central siphon, specifically comprises the following steps:
(1) blanking: intercept the round steel of technological requirement length as blank workpiece;
(2) heating: the heating of blank workpiece is reached to technological requirement temperature;
(3) location: the die cavity of first workpiece 4 that reaches requirement temperature being put into die 5, then geocoded activity mould 3 inserted to die 5 and be pressed on workpiece 4, make through hole on geocoded activity mould 3 just to punch 2 simultaneously, in the time that the die cavity of die 5 is inserted in the lower end of geocoded activity mould 3, the through hole of geocoded activity mould 3 and punch 2 are just right, punch 2 is descending to be passed the through hole on geocoded activity mould 3 and is pressed into workpiece 4, on workpiece 4, forms locating hole;
(4) shallow punching: punch 2 is up, takes out geocoded activity mould 3, and then the descending insertion locating hole of punch 2 carries out shallow punching and makes punch 2 insert the position of workpiece 4 half;
(5) jumping-up moulding: punch 2 is up, jumping-up movable mold 7 is put into the die cavity of die 5 and be pressed on workpiece 4, make the through hole of jumping-up movable mold 7 just to punch 2 simultaneously, in the time that the die cavity of die 5 is inserted in the lower end of jumping-up movable mold 7, the through hole of jumping-up movable mold 7 and punch 2 are just right, punch is advanced into the through hole of jumping-up movable mold 7 for 2 times, and extruding workpiece 4, to workpiece 4 jumping-ups, suppresses ring flange in the upper end of workpiece 4; And further workpiece 4 is pushed in deep-draw, because punch 2 tops are straight-tube shape, bottom have with dark blind taper hole central siphon in the tapering that matches of dark blind taper hole, so form a step on punch 2, in the time that punch 2 comes downwards to this step place, the deep punch of workpiece 4 gained can reach projected depth.

Claims (9)

1. a hot extrusion forging mold for flanged dark blind taper hole central siphon, is characterized in that, comprises die, punch, geocoded activity mould and the jumping-up movable mold matching with punch; The die cavity of die is second order stepped hole, and aperture from top to bottom diminishes; The top of punch is straight-tube shape, and bottom has tapering; Geocoded activity mould is provided with the through hole coordinating with punch; Jumping-up movable mold is provided with the through hole matching with punch.
2. the hot extrusion forging mold of flanged dark blind taper hole central siphon according to claim 1, is characterized in that, described punch is fixed on a upper mounting plate.
3. the hot extrusion forging mold of flanged dark blind taper hole central siphon according to claim 2, is characterized in that, described upper mounting plate is connected with power set and control system.
4. the hot extrusion forging mold of flanged dark blind taper hole central siphon according to claim 1, is characterized in that, described die is fixed on a lower platform.
5. the hot extrusion forging mold of flanged dark blind taper hole central siphon according to claim 1, is characterized in that, match with the lower end of geocoded activity mould, jumping-up movable mold in the aperture, top of described die die cavity.
6. the hot extrusion forging mold of flanged dark blind taper hole central siphon according to claim 1, is characterized in that, the tapering of described punch bottom matches with the dark blind taper hole in dark blind taper hole central siphon.
7. the hot extrusion forging mold of flanged dark blind taper hole central siphon according to claim 1, is characterized in that, match with the flange in flanged dark blind taper hole central siphon in the lower surface of described jumping-up movable mold.
8. the hot extrusion forging mold of flanged dark blind taper hole central siphon according to claim 1, it is characterized in that, the axis of the lower surface of described jumping-up movable mold and jumping-up movable mold is perpendicular, and the axis of the lower surface of geocoded activity mould and geocoded activity mould is perpendicular.
9. a forging method that utilizes the hot extrusion forging mold of flanged dark blind taper hole central siphon described in claim 1, specifically comprises the following steps:
(1) blanking: intercept the round steel of technological requirement length as blank workpiece;
(2) heating: the heating of blank workpiece is reached to technological requirement temperature;
(3) location: the die cavity of first workpiece that reaches requirement temperature being put into die, then geocoded activity mould is inserted to die and is pressed on workpiece, make through hole on geocoded activity mould just to punch simultaneously, punch is descending to be passed the through hole on geocoded activity mould and is pressed into workpiece, forms locating hole on workpiece;
(4) shallow punching: punch is up, takes out geocoded activity mould, and then the descending insertion locating hole of punch carries out shallow punching and makes punch insert the position of workpiece half;
(5) jumping-up moulding: punch is up, puts into jumping-up movable mold the die cavity of die and is pressed on workpiece, makes the through hole of jumping-up movable mold just to punch simultaneously, is advanced into the through hole of jumping-up movable mold under punch, and extruding workpiece, to workpiece jumping-up, suppresses ring flange; And further workpiece is pushed in deep-draw, until the hole on workpiece reaches projected depth.
CN201410248313.9A 2014-06-06 2014-06-06 Hot extrusion forging die for pipe with flange and deep blind taper hole shaft and forging technology thereof Active CN104070129B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104289652A (en) * 2014-11-04 2015-01-21 贵州航天精工制造有限公司 Extrusion forming cold-upsetting die and application method thereof
CN105033154A (en) * 2015-07-22 2015-11-11 中国第一重型机械股份公司 Integral forging method for integrated connecting pipe section with connecting pipe and flange
CN105081178A (en) * 2015-09-28 2015-11-25 四川联茂机械制造有限公司 Machining process and machining die of shaft tube hollow tube
CN108080434A (en) * 2017-12-29 2018-05-29 重庆郭氏洪伸科技有限公司 A kind of processing method and stamping die of step deep hole axial workpiece
CN108160891A (en) * 2016-12-07 2018-06-15 陕西宏远航空锻造有限责任公司 A kind of center carries the forged shaft free forging method of blind hole
CN113020512A (en) * 2021-03-19 2021-06-25 盐城中德精锻股份有限公司 Composite forming process and device for thin-wall deep-hole barrel precision forging

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SU874255A1 (en) * 1979-05-11 1981-10-23 Краматорский Индустриальный Институт Method of shaping hollow articles with flange
JP2010089154A (en) * 2008-10-10 2010-04-22 Toyota Motor Corp Method and apparatus for manufacturing hollow article, and hollow article
CN101829756A (en) * 2010-06-17 2010-09-15 鹏驰五金制品有限公司 Cutting-free forming die of expansion anchor bolt
CN102248111A (en) * 2011-06-24 2011-11-23 济南中森机械制造有限公司 Hot extrusion forging equipment and method for axle tube
CN102489657A (en) * 2011-12-23 2012-06-13 济南中森机械制造有限公司 Hot extrusion forging device and forging method of flange plate shaft tube
CN203917768U (en) * 2014-06-06 2014-11-05 济南中森机械制造有限公司 A kind of hot extrusion forging mold of flanged dark blind taper hole central siphon

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU874255A1 (en) * 1979-05-11 1981-10-23 Краматорский Индустриальный Институт Method of shaping hollow articles with flange
JP2010089154A (en) * 2008-10-10 2010-04-22 Toyota Motor Corp Method and apparatus for manufacturing hollow article, and hollow article
CN101829756A (en) * 2010-06-17 2010-09-15 鹏驰五金制品有限公司 Cutting-free forming die of expansion anchor bolt
CN102248111A (en) * 2011-06-24 2011-11-23 济南中森机械制造有限公司 Hot extrusion forging equipment and method for axle tube
CN102489657A (en) * 2011-12-23 2012-06-13 济南中森机械制造有限公司 Hot extrusion forging device and forging method of flange plate shaft tube
CN203917768U (en) * 2014-06-06 2014-11-05 济南中森机械制造有限公司 A kind of hot extrusion forging mold of flanged dark blind taper hole central siphon

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104289652A (en) * 2014-11-04 2015-01-21 贵州航天精工制造有限公司 Extrusion forming cold-upsetting die and application method thereof
CN105033154A (en) * 2015-07-22 2015-11-11 中国第一重型机械股份公司 Integral forging method for integrated connecting pipe section with connecting pipe and flange
CN105081178A (en) * 2015-09-28 2015-11-25 四川联茂机械制造有限公司 Machining process and machining die of shaft tube hollow tube
CN108160891A (en) * 2016-12-07 2018-06-15 陕西宏远航空锻造有限责任公司 A kind of center carries the forged shaft free forging method of blind hole
CN108160891B (en) * 2016-12-07 2019-08-02 陕西宏远航空锻造有限责任公司 A kind of center has the forged shaft free forging method of blind hole
CN108080434A (en) * 2017-12-29 2018-05-29 重庆郭氏洪伸科技有限公司 A kind of processing method and stamping die of step deep hole axial workpiece
CN108080434B (en) * 2017-12-29 2019-11-08 重庆郭氏洪伸科技有限公司 A kind of processing method and stamping die of step deep hole axial workpiece
CN113020512A (en) * 2021-03-19 2021-06-25 盐城中德精锻股份有限公司 Composite forming process and device for thin-wall deep-hole barrel precision forging

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