CN104826972A - Continuous upsetting and forging die for I-shaped joints and forming process thereof - Google Patents
Continuous upsetting and forging die for I-shaped joints and forming process thereof Download PDFInfo
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- CN104826972A CN104826972A CN201510228081.5A CN201510228081A CN104826972A CN 104826972 A CN104826972 A CN 104826972A CN 201510228081 A CN201510228081 A CN 201510228081A CN 104826972 A CN104826972 A CN 104826972A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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Abstract
The invention relates to a continuous upsetting and forging die for I-shaped joints and a forming process thereof. The die comprises an extrusion male die, an upsetting male die, a finish-forging male die and a female die assembly, wherein the extrusion male die, the upsetting male die and the finish-forging male die are sequentially arranged and fixed on a die carrier, and the female die assembly is arranged at an opposite side of the die carrier; the three male dies jointly use the female die assembly; the female die assembly comprises an upper female die, a lower female die with push rods and an oblique slider, and a cylindrical die cavity is formed when the upper female die, the lower female die and the oblique slider are closed. According to the die and the forming process thereof, the problem of the conventional multi-procedure forging that workpieces are required to be taken out among procedures is avoided, the production efficiency is increased in a doubled manner, the cost of a single workpiece is reduced, and the batch continuous production of parts is realized.
Description
Technical field
What the present invention relates to is a kind of technology of field of machining, the specifically continuous upsetting die of a kind of I shape joint and forming technology thereof.
Background technology
I shape joint is a kind of nonstandard heteromorphic connector, and intermediate shank portion has step, and two ends nose shape is different, due to the complexity of its shape, usually adopts casting technique to manufacture.But, the joint part produced by casting technique, the influence factor of its quality is complicated, easily forms the casting flaws such as pore, shrinkage cavity and sand holes; Due to cast sturcture, its mechanical property is relatively poor, affects the bonding strength of member diameters.
Through finding the retrieval of prior art, Chinese patent literature CN101444816, open (bulletin) day 2009.06.03, disclose a kind of process for forging of I-shaped part, cylinder blank is swaged into rectangle blank by this technology, according to forge weight, use band saw cutting stock, the head of I-shaped structure part and the excessive place in head and bar portion is gone out with loose tooling forging, said blank is distributed simultaneously, again with falling die forging rod portion, put said forging into finishing mold and clamp, hold up mould to forge, ensure the smooth of home record two plane, set level mould again to forge.Compared with Integral die-forged, two planes of the I-shaped structure part home record of the method forging can reach the strict demand of the depth of parallelism and flatness, no longer carry out machining.But, the I shape forging that the method relates to, bar portion and head difference are little and symmetrical, are formed comparatively simple; And swage forging used be only applicable in, small lot batch manufacture.
Further retrieval finds, Deng Yushan, Yao Xiaojing propose in " analysis about i shaped cross section die-forging of forge pieces work step " (phase " Tool and Die Technology " nineteen ninety 01): in blocking, take oval die cavity, make metal Free Transform and form overlap, eddy current can be avoided during finish-forging and wear rib defect, improving forging surface and internal soundness.But overlap needs are follow-up to carry out earnestly; If overlap is oversize, stock utilization is low.
For the I shape forging of complicated shape, particularly geomery differs greatly, if adopt hot forging technique, can produce very large overlap along forging cross section, waste of material is serious; Because two ends are complex-shaped, easily cause being not fully filled, preform design difficulty.If adopt loose tooling forging technique, operation is grown and inappropriate tissue is produced in enormous quantities.
Summary of the invention
The present invention is directed to prior art above shortcomings, the continuous upsetting die of a kind of I shape joint and forming technology thereof are proposed, avoid workpiece between each operation of vertical forging and need the problem of taking out, significantly improve production efficiency, reduce cost per unit, achieve the batch continuous seepage of such part.
The present invention is achieved by the following technical solutions:
The present invention relates to the continuous upsetting die of a kind of I shape joint, comprise: be arranged in order the die assembly that the extruding punch be fixed on mould bases, jumping-up punch and finish-forging punch and slip are arranged at mould bases opposite side, wherein: three punch share a set of die assembly.
Described die assembly comprises: upper cavity die, with the lower cavity die of push rod and angled-lift splits, wherein: form cylindrical mold cavities when upper cavity die, lower cavity die and angled-lift splits close.
Described upper cavity die and angled-lift splits are side core-drawing mechanism of slanting sliding block, and the lateral wall of angled-lift splits is for tilting and meeting
wherein: p is angled-lift splits lateral wall inclination angle; h
2for angled-lift splits height; d
4for workpiece lower end maximum length.
Described push rod totally four, be movably set in respectively in lower cavity die, the upper end of this push rod contacts with angled-lift splits.
Described extruding punch comprises: the extrusion die plate be socketed successively from outside to inside, guiding mechanism, compression sleeve and extruding punch; wherein: the top of compression sleeve and extrusion die plate Elastic Contact, extrude punch to be movably set in the inner and top of compression sleeve and to be connected with extrusion die plate.
Described heading die structure: the jumping-up template be socketed successively from outside to inside, guiding mechanism, jumping-up sleeve and jumping-up punch; wherein: the top of jumping-up sleeve and jumping-up template Elastic Contact, jumping-up punch is movably set in jumping-up sleeve inner and top is connected with jumping-up template.
Described Elastic Contact is realized by the flexible member be arranged between the top of compression sleeve or jumping-up sleeve and extrusion die plate or jumping-up template.
Described guiding mechanism comprises: guide positioning sleeve and guiding guide, wherein: guide positioning sleeve is fixedly connected with extrusion die plate or jumping-up template, it is inner that hole cylinder shape guiding guide is socketed on guide positioning sleeve by ledge structure, and compression sleeve or jumping-up sleeve are movably set in guiding guide.
Described finish-forging die structure: cope match-plate pattern and the finish-forging punch be fixedly installed thereon.
The present invention relates to a kind of I shape joint Forging Technology, comprise the following steps:
The first step, blanking, adopt bar, blank diameter is less than joint intermediate shank portion diameter 0.1mm, and charge length obtains according to volume of part calculating;
Second step, lower end head extrudes: blank is put into die, and die aimed at by extruding punch, and punch moves downward, and first compression sleeve contacts with die, and extruding punch continues to decline, and extrusion billet, makes blank lower end head be shaped gradually, and after being shaped, punch rises;
3rd step, bar portion jumping-up, obtains the distortion of joint shaped upper part comparatively large, therefore reduces blank height by carrying out gathering stock to upper end, increases blank upper end diameter; Mould bases is by left-to-right motion, and die aimed at by the thick punch of pier, and punch moves downward, and first the thick sleeve of pier contacts with die, and the thick punch of pier continues to decline, and pier crude green body material, makes blank upper end be shaped, and after being shaped, punch rises;
4th step, finish-forging upper head: mould bases is by left-to-right motion, and die aimed at by finish-forging punch, punch declines and blank is shaped, and obtains net shape, and after shaping, punch rises; At the end of shaping, push rod drives angled-lift splits to make oblique movement, while forging is pushed out, completes undercut by angled-lift splits, obtains complicated I shape adapter piece.
Lubricate described in this technique and use phospholeum process in extrusion process, in subsequent handling, reach lubricating requirement by supplemental lubrication agent.
The present invention relates to the steel I shape joint that above-mentioned technique prepares, comprise successively: head, connecting portion and platform base.
Technique effect
Compared with existing casting or Forging Technology, tool of the present invention has the following advantages:
1. improve workpiece quality and surface roughness, decrease workpiece, defect;
2. improve workpiece mechanical performance, forming technology is stablized, and product percent of pass is high;
3. realized by continuous mould, relatively shorten production line, save production time per piece, be convenient to control cost per unit.
Accompanying drawing explanation
Fig. 1 is embodiment forging drawing;
In figure: a is forging drawing front view; B is forging drawing left view; C is forging drawing top view;
Fig. 2 is I-shaped part forming process;
Fig. 3 is mould structure schematic diagram;
Fig. 4 is extrusion process and mould structure schematic diagram;
Fig. 5 is upset forging process and mould structure schematic diagram;
Fig. 6 is finish-forging technique and mould structure schematic diagram;
Fig. 7 is concave die structure chart;
In figure: a is front view; B is top view;
In figure: mould bases 1, upper extrusion die plate 2, guide positioning sleeve 3, guiding guide 4, flexible member 5, extruding punch 6, compression sleeve 7, angled-lift splits 8, upper cavity die 9, lower cavity die 10, push rod 11, finish-forging punch 12, cope match-plate pattern 13, guide positioning sleeve 14, upper jumping-up template 15, guiding guide 16, jumping-up sleeve 17, flexible member 18, jumping-up punch 19.
Detailed description of the invention
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Fig. 3 ~ Fig. 7, the present embodiment comprises: be arranged in order the die assembly that the extruding punch be fixed on mould bases 1, jumping-up punch and finish-forging punch and slip are arranged at mould bases opposite side, wherein: three punch share a set of die assembly.
As shown in Figure 6 and Figure 7, described die assembly comprises: form cylindrical mold cavities when upper cavity die 9, lower cavity die 10, angled-lift splits 8 close, side core-drawing mechanism of slanting sliding block is had at Die Design, four push rods 11 are housed in lower cavity die 10, push rod 11 upper end is fixed on angled-lift splits 8, angled-lift splits 8 lateral wall has certain gradient, meets relation
In the present embodiment, angled-lift splits 8 lateral wall has certain gradient, and height h2=5.6mm, draft angle is p=37 °.
As shown in Figure 4, described extruding punch comprises: upper extrusion die plate 2, guide positioning sleeve 3, guiding guide 4, flexible member 5, extruding punch 6, sleeve 7, wherein: extruding punch 6 is inside sleeve 7, sleeve 7 realizes floating control by flexible member 5, and led by guiding guide 4, flexible member 5 other end is fixed on extrusion die plate 2, and guiding guide 4 is located by guide positioning sleeve 3, is fixed on extrusion die plate 2.
As shown in Figure 5, described heading die structure: upper jumping-up template 15, guiding guide 16, jumping-up sleeve 17, flexible member 18, jumping-up punch 19, wherein: jumping-up punch 19 is inside jumping-up sleeve 17, jumping-up sleeve 17 realizes floating control by flexible member 18, and led by guiding guide 16, flexible member 18 other end is fixed in jumping-up template 15, and guiding guide 16 is located by guide positioning sleeve 14, is fixed in jumping-up template 15.
As shown in Figure 6, described finish-forging die structure: cope match-plate pattern 13 and the finish-forging punch 12 be fixedly installed thereon.
The process that the present embodiment relates to, comprises the following steps:
The first step, employing 20# steel carry out blanking, wherein: bar height is 35mm, and diameter is 3.7mm, and the diameter of blank is than connector intermediate shank portion d
1the little 0.1mm of diameter.
Second step, the bar preparing joint to be extruded, die cavity diameter D
1for 3.8mm, punch presses down 13.4mm, obtains workpiece lower shape, makes workpiece lower end fill full length completely to d
3be greater than d
2=11.8mm.
3rd step, carry out jumping-up to workpiece upper end, punch presses down 4.85mm, makes it almost be full of whole die cavity, die cavity top D
2diameter is 4.8mm, and the first half in bar portion forms boss.
4th step, carry out finish-forging to workpiece top, punch presses down 7.0mm, obtains finish-forging shaping form.
This method achieves the forging and molding of I shape joint, effectively improves the quality of part, improves part machinery performance, and forming technology is stablized, and product percent of pass is high.
Claims (9)
1. the continuous upsetting die of I shape joint, it is characterized in that, comprise: be arranged in order the die assembly that the extruding punch be fixed on mould bases, jumping-up punch and finish-forging punch and slip are arranged at mould bases opposite side, wherein: three punch share a set of die assembly;
Described die assembly comprises: upper cavity die, with the lower cavity die of push rod and angled-lift splits, wherein: form cylindrical mold cavities when upper cavity die, lower cavity die and angled-lift splits close.
2. the continuous upsetting die of I shape joint according to claim 1, is characterized in that, described upper cavity die and angled-lift splits are side core-drawing mechanism of slanting sliding block, and the lateral wall of angled-lift splits is for tilting and meeting
wherein: p is angled-lift splits lateral wall inclination angle; h
2for angled-lift splits height; d
4for workpiece lower end maximum length.
3. the continuous upsetting die of I shape joint according to claim 2, is characterized in that, described push rod totally four, be movably set in respectively in lower cavity die, the upper end of this push rod contacts with angled-lift splits.
4. the continuous upsetting die of I shape joint according to claim 1, it is characterized in that, described extruding punch comprises: the extrusion die plate be socketed successively from outside to inside, guiding mechanism, compression sleeve and extruding punch, wherein: the top of compression sleeve and extrusion die plate Elastic Contact, extrude punch to be movably set in the inner and top of compression sleeve and to be connected with extrusion die plate;
Described heading die structure: the jumping-up template be socketed successively from outside to inside, guiding mechanism, jumping-up sleeve and jumping-up punch; wherein: the top of jumping-up sleeve and jumping-up template Elastic Contact, jumping-up punch is movably set in jumping-up sleeve inner and top is connected with jumping-up template.
5. the continuous upsetting die of I shape joint according to claim 4, is characterized in that, described Elastic Contact is realized by the flexible member be arranged between the top of compression sleeve or jumping-up sleeve and extrusion die plate or jumping-up template.
6. the continuous upsetting die of I shape joint according to claim 4, it is characterized in that, described guiding mechanism comprises: guide positioning sleeve and guiding guide, wherein: guide positioning sleeve is fixedly connected with extrusion die plate or jumping-up template, it is inner that hole cylinder shape guiding guide is socketed on guide positioning sleeve by ledge structure, and compression sleeve or jumping-up sleeve are movably set in guiding guide.
7. the continuous upsetting die of I shape joint according to claim 1, is characterized in that, described finish-forging die structure: cope match-plate pattern and the finish-forging punch be fixedly installed thereon.
8. the I shape joint preparation technology of mould according to above-mentioned arbitrary claim, is characterized in that, comprise the following steps:
The first step, blanking, adopt bar, blank diameter is less than joint intermediate shank portion diameter 0.1mm, and charge length obtains according to volume of part calculating;
Second step, lower end head extrudes: blank is put into die, and die aimed at by extruding punch, and punch moves downward, and first compression sleeve contacts with die, and extruding punch continues to decline, and extrusion billet, makes blank lower end head be shaped gradually, and after being shaped, punch rises;
3rd step, bar portion jumping-up, obtains the distortion of joint shaped upper part comparatively large, therefore reduces blank height by carrying out gathering stock to upper end, increases blank upper end diameter; Mould bases is by left-to-right motion, and die aimed at by the thick punch of pier, and punch moves downward, and first the thick sleeve of pier contacts with die, and the thick punch of pier continues to decline, and pier crude green body material, makes blank upper end be shaped, and after being shaped, punch rises;
4th step, finish-forging upper head: mould bases is by left-to-right motion, and die aimed at by finish-forging punch, punch declines and blank is shaped, and obtains net shape, and after shaping, punch rises; At the end of shaping, push rod drives angled-lift splits to make oblique movement, while forging is pushed out, completes undercut by angled-lift splits, obtains complicated I shape adapter piece.
9., according to the I shape joint described in above-mentioned arbitrary claim, it is characterized in that, comprise successively: head, connecting portion and platform base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228081.5A CN104826972B (en) | 2015-05-06 | 2015-05-06 | The continuous upsetting die of I shape joint and forming technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228081.5A CN104826972B (en) | 2015-05-06 | 2015-05-06 | The continuous upsetting die of I shape joint and forming technology thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104826972A true CN104826972A (en) | 2015-08-12 |
| CN104826972B CN104826972B (en) | 2016-10-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110935839A (en) * | 2019-11-20 | 2020-03-31 | 常山县鑫龙轴承有限公司 | Automatic forging device for bearing inner race |
| CN111136118A (en) * | 2019-12-25 | 2020-05-12 | 北京机电研究所有限公司 | Multi-station movable die holder suitable for projectile deep hole forging |
| CN111136117A (en) * | 2019-12-25 | 2020-05-12 | 北京机电研究所有限公司 | Multi-station die holder suitable for projectile deep hole forging |
| WO2023115752A1 (en) * | 2021-12-22 | 2023-06-29 | 二重（德阳）重型装备有限公司 | Die forging forming die and die forging forming method for large l-shaped hollow thin-walled pipe |
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| JPS6137341A (en) * | 1984-07-30 | 1986-02-22 | Toyota Motor Corp | Method and apparatus for producing preform blank material for closed forging having irregular sectional shape |
| JPH11347683A (en) * | 1998-06-09 | 1999-12-21 | Tokai Rika Co Ltd | Long shaft, manufacture of long shaft and device for manufacturing long shaft |
| RU2374029C1 (en) * | 2008-03-17 | 2009-11-27 | Гартунг Андрей Валерьевич | Method of blanking by upset of hollow thin-walled thickening of spherical form on bar part of forging with flange and end section |
| CN102284664A (en) * | 2011-07-05 | 2011-12-21 | 哈尔滨工业大学 | Semi-solid forming die and forming method for cavity-variable axisymmetric part |
| CN202411311U (en) * | 2011-11-10 | 2012-09-05 | 深圳航空标准件有限公司 | Cold upsetting die for dovetail groove screw |
| CN103706749A (en) * | 2013-12-30 | 2014-04-09 | 武汉重工铸锻有限责任公司 | Die-forging forming die and process of output end journal of low-speed diesel engine |
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2015
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Patent Citations (6)
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|---|---|---|---|---|
| JPS6137341A (en) * | 1984-07-30 | 1986-02-22 | Toyota Motor Corp | Method and apparatus for producing preform blank material for closed forging having irregular sectional shape |
| JPH11347683A (en) * | 1998-06-09 | 1999-12-21 | Tokai Rika Co Ltd | Long shaft, manufacture of long shaft and device for manufacturing long shaft |
| RU2374029C1 (en) * | 2008-03-17 | 2009-11-27 | Гартунг Андрей Валерьевич | Method of blanking by upset of hollow thin-walled thickening of spherical form on bar part of forging with flange and end section |
| CN102284664A (en) * | 2011-07-05 | 2011-12-21 | 哈尔滨工业大学 | Semi-solid forming die and forming method for cavity-variable axisymmetric part |
| CN202411311U (en) * | 2011-11-10 | 2012-09-05 | 深圳航空标准件有限公司 | Cold upsetting die for dovetail groove screw |
| CN103706749A (en) * | 2013-12-30 | 2014-04-09 | 武汉重工铸锻有限责任公司 | Die-forging forming die and process of output end journal of low-speed diesel engine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110935839A (en) * | 2019-11-20 | 2020-03-31 | 常山县鑫龙轴承有限公司 | Automatic forging device for bearing inner race |
| CN111136118A (en) * | 2019-12-25 | 2020-05-12 | 北京机电研究所有限公司 | Multi-station movable die holder suitable for projectile deep hole forging |
| CN111136117A (en) * | 2019-12-25 | 2020-05-12 | 北京机电研究所有限公司 | Multi-station die holder suitable for projectile deep hole forging |
| WO2023115752A1 (en) * | 2021-12-22 | 2023-06-29 | 二重（德阳）重型装备有限公司 | Die forging forming die and die forging forming method for large l-shaped hollow thin-walled pipe |
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| Publication number | Publication date |
|---|---|
| CN104826972B (en) | 2016-10-05 |
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