CN104070129B - 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 PDFInfo
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- CN104070129B CN104070129B CN201410248313.9A CN201410248313A CN104070129B CN 104070129 B CN104070129 B CN 104070129B CN 201410248313 A CN201410248313 A CN 201410248313A CN 104070129 B CN104070129 B CN 104070129B
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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
Technical field
The invention belongs to the technical field of workpiece forging, is specifically related to a kind of hot extrusion of the blind taper hole central siphon of flanged depth
Forging mold and its forging technology.
Background technology
Spindle nose, central siphon are the critical components of automobile drive axle, and current press-in type spindle nose is classified from profile mainly straight tube
Formula and ring flange class；Endoporus is then divided into step through-hole, step blind hole, clear opening, straight blind hole, deep taper through hole, deep taper blind hole,
It is especially most prominent with the forging difficulty of deep taper blind hole.
The blind taper hole central siphon of flanged depth is a kind of part with certain length, and there are ring flange, upper end in one end of the part
Face is flange, and lower end is taper-bored spindle.The forging technology difficulty of deep taper blind hole class central siphon is big, and forging ratio is more than 8, the aperture of endoporus
Long, upper step is compared more than 8 with the radial direction of bottom taper, and thinnest part is 10mm, and gross weight needs control together in 37mm.It is flanged
Deep blind taper hole central siphon can carry out hot extrusion by forging molding through heating after blanking on forging equipment.At present to this zero
The forging technology of part is to set up two to four procedures separately by multiple stage forging equipment to be forged, and puts into larger, turnover dress in work
Often, thermal losses is fast, low production efficiency for folder；It is known that forging equipment and mould disposably put into it is larger, it is also auxiliary for it
The occupation area of equipment for helping is too big, and to forging and stamping, enterprise increased very big input.
For the height of forging technology level depends on manufacturing and designing and forging technology for FMT product mold.Existing heat
Making mould steel principal item has H13（4Cr5MoSiV1）, 9CrWMn, 3Cr2W8V, 5CrNiMo, 5CrMnMo etc..Wherein in heat work
It is mainly with H13 in mould steel（4Cr5MoSiV1）, 5CrNiMo be preferred material.
The design structure of mould not only embodies the quality good or not of product, while also embodying the life-span of mould.Mould is tied
Structure is the major issue in forging technology.Improve production efficiency, reduction production cost are forging industrial expansion trend, and instead
The target of extrusion technique research.
The technological difficulties of forging and stamping are the following aspects：1st, the type selecting of forcing press；2nd, hot extrusion technique design, blind hole position
Put guarantee heat treatment and fracture will not occur；3rd, the Design of Dies of hot extrusion, it is considered to the life-span of hot-extrusion mold.
The content of the invention
Present invention aims to the FMT of the blind taper hole central siphon of existing flanged depth needs multiple stage forging equipment
Set up two to four procedures separately to be forged, and have enough to meet the need clamping at work repeatedly, thermal losses is fast, the problem of low production efficiency,
And the hot extrusion forging mold and its forging technology of a kind of blind taper hole central siphon of flanged depth are provided, it is only necessary to an equipment just can be complete
Into whole forging process of the blind taper-bored spindle of flanged depth, working (machining) efficiency is substantially increased.
The technical scheme is that：A kind of hot extrusion forging mold of the blind taper hole central siphon of flanged depth, including it is die, convex
Mould,
Positioning movable mold and the jumping-up movable mold being engaged with punch；The die cavity of die is second order stepped hole, and aperture is by upper
Diminish under；The top of punch is straight-tube shape, and bottom has taper；Positioning movable mold is provided with the through hole coordinated with punch；Upsetting
Heavy manual labour dynamic model is provided with the through hole being engaged with punch.
The punch is fixed on a upper mounting plate.
The upper mounting plate is connected with power set and control system.
The die is fixed on a lower platform.
The top aperture of the die die cavity is engaged with the lower end of positioning movable mold, jumping-up movable mold.
The taper of the punch bottom is engaged with the blind taper hole of depth in deep blind taper hole central siphon.
The lower surface of the jumping-up movable mold is engaged with the flange in the blind taper hole central siphon of flanged depth.
The lower surface of the jumping-up movable mold is perpendicular with the axis of jumping-up movable mold, position movable mold lower surface with
The axis of positioning movable mold is perpendicular.
A kind of forging method of the hot extrusion forging mold using the blind taper hole central siphon of the flanged depth, specifically includes following
Step：
（1）Blanking：The round steel of technological requirement length is intercepted as blank workpiece；
（2）Heating：Blank workpiece heat is reached into technological requirement temperature；
（3）Positioning：It is up to first require that the workpiece of temperature is put in the die cavity of die, then will positioning movable mold insertion
Die is simultaneously pressed on workpiece, while making the through hole in positioning movable mold just to punch, punch is descending through in positioning movable mold
Through hole is simultaneously pressed into workpiece, and location hole is formed on workpiece；
（4）Shallow punching：Punch is up, takes out positioning movable mold, and then the descending insertion location hole of punch carries out shallow punching so that convex
At the position of mould insertion workpiece half；
（5）Jumping-up molding：Punch is up, and jumping-up movable mold is put in the die cavity of die and is pressed on workpiece, while making
The through hole of jumping-up movable mold is advanced into the through hole of jumping-up movable mold just to punch under punch, extruding workpiece is to workpiece jumping-up, compacting
Go out ring flange；And further deep-draw extrudes workpiece, until the hole on workpiece reaches projected depth.
Beneficial effects of the present invention are：The present invention by design two auxiliary movable molds, respectively position movable mold and
Jumping-up movable mold, using positioning movable mold auxiliary positioning during positioning, positioning movable mold can prevent punch with hot absorption surface
When occur bending and deformation, it is ensured that the precision of hole site on workpiece, in jumping-up molding using jumping-up movable mold aid in jumping-up molding
And while deep blind taper hole is completed, the special operations mould for no longer needing other extra during molding realizes three forging process same
Complete in platform equipment so that workpiece need not be had enough to meet the need during forging molding, reduce thermal losses, it is high in machining efficiency.
Description of the drawings
The schematic diagram positioned for positioning movable mold in the specific embodiment of the invention by Fig. 1.
Fig. 2 is the schematic diagram that specific embodiment of the invention convex mould carries out shallow punching.
Fig. 3 carries out the schematic diagram of jumping-up molding for jumping-up movable mold in the specific embodiment of the invention.
Wherein, 1 is upper mounting plate, and 2 is punch, and 3 are positioning movable mold, and 4 is workpiece, and 5 is die, and 6 is lower platform, and 7 is upsetting
Heavy manual labour dynamic model.
Specific embodiment
Below by embodiment, the present invention will be described in detail.
A kind of hot extrusion forging mold of the blind taper hole central siphon of flanged depth, including die 5, punch 2, positioning 3 and of movable mold
The jumping-up movable mold 7 being engaged with punch 2；The die cavity of die 5 is second order stepped hole, and aperture from top to bottom diminishes, top aperture
Greatly, bottom aperture is little, and its middle upper aperture footpath is engaged with the lower end of positioning movable mold 3, jumping-up movable mold 7, jumping-up movable mold 7
The lower end of lower end and positioning movable mold 3 can be respectively enterd in the upper step hole of 5 die cavity of die.The lower surface connection of die 5
There is lower platform 6.The top of punch 2 is straight-tube shape, and bottom has taper, the blind taper hole phase of depth in the taper and the blind taper hole central siphon of depth
Coordinate.The upper surface of punch 2 is connected with upper mounting plate 1, and the upper mounting plate 1 is connected with and drives the power set of upper mounting plate 1 and control dynamic
The control system of power apparatus.Positioning movable mold 3 is provided with the through hole being engaged with punch 2, for inserting punch 2；Jumping-up activity
Mould 7 is provided with the through hole being engaged with punch 2, for inserting punch 2.
The lower surface of the jumping-up movable mold 7 is engaged with the flange in the blind taper hole central siphon of flanged depth.
The lower surface of the jumping-up movable mold 7 is perpendicular with the axis of jumping-up movable mold 7, positions the lower end of movable mold 3
Face is perpendicular with the axis of positioning movable mold 3.
A kind of forging method of the hot extrusion forging mold using the blind taper hole central siphon of the flanged depth, specifically includes following
Step：
（1）Blanking：The round steel of technological requirement length is intercepted as blank workpiece；
（2）Heating：Blank workpiece heat is reached into technological requirement temperature；
（3）Positioning：It is up to first require that the workpiece 4 of temperature is put in the die cavity of die 5, then will positioning movable mold 3
Insertion die 5 is simultaneously pressed on workpiece 4, while the through hole in positioning movable mold 3 is made just to punch 2, when the lower end of positioning movable mold 3
During the die cavity of insertion die 5, the through hole for positioning movable mold 3 is just right with punch 2, and punch 2 is descending logical through in positioning movable mold 3
Hole is simultaneously pressed into workpiece 4, on workpiece 4 forms location hole；
（4）Shallow punching：Punch 2 is up, take out positioning movable mold 3, then punch 2 it is descending insertion location hole carry out it is shallow punching cause
At the position of insertion 4 half of workpiece of punch 2；
（5）Jumping-up molding：Punch 2 is up, and jumping-up movable mold 7 is put in the die cavity of die 5 and is pressed on workpiece 4, together
When make the through hole of jumping-up movable mold 7 just to punch 2, when the die cavity of die 5 is inserted in the lower end of jumping-up movable mold 7, jumping-up activity
The through hole of mould 7 is just right with punch 2, and the through hole of jumping-up movable mold 7 is advanced under punch 2, extrudes workpiece 4 to 4 jumping-up of workpiece, in work
The upper end of part 4 suppresses ring flange；And further deep-draw extruding workpiece 4, as 2 top of punch is straight-tube shape, bottom with
The taper that the blind taper hole of depth in deep blind taper hole central siphon matches, so a step is formed on punch 2, when punch 2 comes downwards to
When at the step, the deep punch obtained by workpiece 4 can reach projected depth.
Claims (9)
1. the hot extrusion forging mold of the blind taper hole central siphon of a kind of flanged depth, it is characterised in that live including die, punch, positioning
Dynamic model and the jumping-up movable mold being engaged with punch；The die cavity of die is second order stepped hole, and aperture from top to bottom diminishes；Punch
Top is straight-tube shape, and bottom has taper；Positioning movable mold is provided with the through hole coordinated with punch；Jumping-up movable mold be provided with
The through hole that punch is engaged.
2. the hot extrusion forging mold of the blind taper hole central siphon of flanged depth according to claim 1, it is characterised in that the punch
It is fixed on a upper mounting plate.
3. the hot extrusion forging mold of the blind taper hole central siphon of flanged depth according to claim 2, it is characterised in that described flat
Platform is connected with power set and control system.
4. the hot extrusion forging mold of the blind taper hole central siphon of flanged depth according to claim 1, it is characterised in that the die
It is fixed on a lower platform.
5. the hot extrusion forging mold of the blind taper hole central siphon of flanged depth according to claim 1, it is characterised in that the die
The top aperture of die cavity is engaged with the lower end of positioning movable mold, jumping-up movable mold.
6. the hot extrusion forging mold of the blind taper hole central siphon of flanged depth according to claim 1, it is characterised in that the punch
The taper of bottom is engaged with the blind taper hole of depth in deep blind taper hole central siphon.
7. the hot extrusion forging mold of the blind taper hole central siphon of flanged depth according to claim 1, it is characterised in that the jumping-up
The lower surface of movable mold is engaged with the flange in the blind taper hole central siphon of flanged depth.
8. the hot extrusion forging mold of the blind taper hole central siphon of flanged depth according to claim 1, it is characterised in that the jumping-up
The lower surface of movable mold is perpendicular with the axis of jumping-up movable mold, positions the lower surface of movable mold and the axis of positioning movable mold
Line is perpendicular.
9. the forging method of the hot extrusion forging mold of the blind taper hole central siphon of flanged depth described in a kind of utilization claim 1, specifically
Comprise the following steps：
（1）Blanking：The round steel of technological requirement length is intercepted as blank workpiece；
（2）Heating：Blank workpiece heat is reached into technological requirement temperature；
（3）Positioning：It is up to first require that the workpiece of temperature is put in the die cavity of die, then will positioning movable mold insertion die
And be pressed on workpiece, while the through hole in positioning movable mold is made just to punch, the descending through hole through in positioning movable mold of punch
And workpiece is pressed into, location hole is formed on workpiece；
（4）Shallow punching：Punch is up, takes out positioning movable mold, and then the descending insertion location hole of punch carries out shallow punching so that punch is inserted
Enter at the position of workpiece half；
（5）Jumping-up molding：Punch is up, and jumping-up movable mold is put in the die cavity of die and is pressed on workpiece, while making jumping-up
The through hole of movable mold is advanced into the through hole of jumping-up movable mold just to punch under punch, extruding workpiece suppresses method to workpiece jumping-up
Blue disk；And further deep-draw extrudes workpiece, until the hole on workpiece reaches projected depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248313.9A CN104070129B (en) | 2014-06-06 | 2014-06-06 | Hot extrusion forging die for pipe with flange and deep blind taper hole shaft and forging technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248313.9A CN104070129B (en) | 2014-06-06 | 2014-06-06 | Hot extrusion forging die for pipe with flange and deep blind taper hole shaft and forging technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104070129A CN104070129A (en) | 2014-10-01 |
| CN104070129B true CN104070129B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410248313.9A Active CN104070129B (en) | 2014-06-06 | 2014-06-06 | Hot extrusion forging die for pipe with flange and deep blind taper hole shaft and forging technology thereof |
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| 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 |
| CN105033154B (en) * | 2015-07-22 | 2017-01-04 | 中国第一重型机械股份公司 | Band adapter and the integrated nozzle belt solid forging method of 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 |
| 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 |
| 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 |
| CN112296115A (en) * | 2020-09-28 | 2021-02-02 | 重庆长安工业(集团)有限责任公司 | Deep conical part rotary extrusion method |
| CN113020512B (en) * | 2021-03-19 | 2021-11-19 | 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 |
| CN114393167A (en) * | 2022-01-06 | 2022-04-26 | 钢铁研究总院 | Upsetting forming die and process for flanged hollow long shaft |
| CN117718431A (en) * | 2024-02-07 | 2024-03-19 | 湖南中创空天新材料股份有限公司 | Preparation method of magnesium alloy conical cylinder |
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| 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 |
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Patent Citations (6)
| 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 |
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| CN104070129A (en) | 2014-10-01 |
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