CN103056264B - Closed cold-temperature precision forging die for straight-tooth bevel gear - Google Patents
Closed cold-temperature precision forging die for straight-tooth bevel gear Download PDFInfo
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- CN103056264B CN103056264B CN201210517251.8A CN201210517251A CN103056264B CN 103056264 B CN103056264 B CN 103056264B CN 201210517251 A CN201210517251 A CN 201210517251A CN 103056264 B CN103056264 B CN 103056264B
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Abstract
The invention relates to the technical field of dies, in particular to a closed cold-temperature precision forging die for a straight-tooth bevel gear. The closed cold-temperature precision forging die for the straight-tooth bevel gear comprises a precision forging upper die, a precision forging lower die and an upper punch. The precision forging upper die is formed by combining a plurality of upper die units, each upper die unit is provided with a corresponding driving mechanism, the upper die units are mutually connected under driving of the driving mechanisms and are enclosed to form the precision forging upper die or the upper die units can be separated in scattering mode to facilitate forge piece taking out, and a channel used for the upper punch to pass through is arranged at the mutually connected upper ends of all the upper die units. The precision forging die is not provided with a lower punch so that manufacture cost is reduced, die assembling errors are reduced and forging accuracy is improved. The precision forging die can be form parts with complex shapes in once forming mode and accordingly is high in production efficiency. Simultaneously, metal flow lines are continuously distributed along the appearance of the forge pieces during forging so that the forge pieces are good in mechanical property.
Description
Technical field
The present invention relates to technical field of mold, be specifically related to the cold temperature finish forge mould of a kind of enclosed for straight bevel gear.
Background technology
Near Shape Forging Technology and clean forming technique, after referring to part forming, only need a small amount of processing or do not reprocess, just can be used as the forming technique of mechanical component, namely manufacture the workpiece blank close to part shape.Decrease follow-up cutting output compared with conventional forming techniques, decrease material, energy resource consumption, manufacturing procedure, significantly improve production efficiency and product quality, reduce production cost, improve the market competitiveness of product.
The precision forging technology being applied to production is at present a lot.Hot finish forge, cold closed-die forging, warm finish forge, compound finish forge and isothermal precision forging etc. can be divided into by forming temperature difference.The upper and lower mould used in closed-die forging process technology wherein in cold closed-die forging is all sub-assembly, be made up of upper cavity die, upper punch, lower cavity die and low punch respectively, in forging and molding process, first upper and lower die is closed to form closed die cavity, enough pressure is applied to it simultaneously, then use, low punch carries out extrusion molding to the blank in closed die cavity and obtain forging.But in cold-forging forming process, workpiece plasticity is poor, resistance of deformation is large, high to the requirement of mould and equipment, and the part of very difficult shaped structure complexity, and existing mould structure is complicated simultaneously, and production cost is higher, therefore needs to be improved.
Summary of the invention
The object of this invention is to provide the cold temperature finish forge mould of a kind of enclosed for straight bevel gear, this mould can the part of once-forming complicated shape, and production efficiency is high; In forging process, metal streamline is along forging profile continuous distributed simultaneously, and the mechanical property of forging is better; In addition the structure of this mould is simple, and manufacturing cost is lower.
For achieving the above object, present invention employs following technical scheme: the cold temperature finish forge mould of a kind of enclosed for straight bevel gear, comprise finish forge patrix, finish forge counterdie and upper punch, described finish forge patrix is combined by some pieces of upper die unit, each block upper die unit is all provided with the driving mechanism corresponding with it, and described upper die unit is in be connected with each other and to enclose to form finish forge patrix and four under the driving of driving mechanism falls apart separately so that take out the two states of forging; The upper end that each upper die unit described is connected with each other is provided with the passage passed through for upper punch.
Meanwhile, the present invention can also be able to further realization by following technical measures:
Preferably, the die joint between described finish forge patrix and finish forge counterdie is plane, and each upper die unit of composition finish forge patrix under the effect of driving mechanism along die joint translation.
Further, described driving mechanism comprises and connects frame and power source with the Hough of upper die unit Joint, described Hough connects frame in block, and block Hough connects the outside that frame is coated on upper die unit, and Hough connects frame along pressing direction and the size being all greater than upper die unit along the size in die joint direction; Described Hough connects paralleling with die joint of frame and the drive end of the side and power source that deviate from upper die unit is connected; The upper end be connected with each other that each Hough described connects frame is provided with the passage passed through for upper punch.
Preferably, described power source is the high-voltage oil cylinder be connected with oil pump.
Further, the downside of described finish forge counterdie is provided with base, and finish forge counterdie is embedded in described base, and the upper surface of finish forge counterdie is mutually concordant with the upper surface of base; Each upper die unit of described composition finish forge patrix is all arranged on the upper surface of base, and the upper surface of the lower surface of each upper die unit and base forms and is slidably matched.
Preferably, the lower surface that Hough connects frame is mutually concordant with the lower surface of upper die unit, and the upper surface of the Hough lower surface and base that connect frame forms and is slidably matched.
Preferably, described finish forge patrix is profile of tooth die, and finish forge counterdie is back cone die.
The course of work of the present invention and beneficial effect are:
1) the finish forge patrix, in this mould is combined by some pieces of upper die unit, now blank is placed in finish forge counterdie during forging, then each upper die unit is enclosed in together to form a complete finish forge patrix under the effect of driving mechanism, finish forge patrix is pressed against the upside of finish forge counterdie tightly under the effect of driving mechanism simultaneously, now forms closed die cavity between finish forge patrix and finish forge counterdie; The passage that upper punch encloses through each upper die unit upper end from top to bottom under the effect of forcing press such as electric screw press also stretches in closed die cavity, and upper punch is the forging of setting shape to described blank extrusion molding; After punching press terminates, each upper die unit four loose separately thus is convenient to take out forging under the effect of driving mechanism, and now whole forging process terminates.
In above process, the die joint between described finish forge patrix and finish forge counterdie is plane, and each upper die unit of composition finish forge patrix under the effect of driving mechanism along die joint translation.Due to blank in the process being forged into forging by the Direction distortion along upper die unit translation, therefore the force-bearing situation of upper die unit is better, and the compression situation of blank in forging process is also comparatively good, namely plasticity when blank forges in this mould is better, therefore use this mould can the part of once-forming complicated shape, production efficiency be high.
2), this mould is having Hough to connect frame along the arranged outside of upper die unit translation direction, described Hough connects frame in block, and Hough connect frame the pressing direction along upper punch and along die joint direction also namely the size of upper die unit translation direction be all greater than the size of upper die unit; This setup makes upper die unit be held around to connect in frame in the Hough of bulk, and described Hough connects paralleling with die joint of frame and the drive end of the side and power source that deviate from upper die unit is connected simultaneously.Then in forging process, driving mechanism connects frame by Hough and applies enough pressure to upper die unit, upper die unit is enclosed in together tightly when upper punch punching press, thus be not only easy to the shape and size controlling forging, and the intensity of forging gained forging and precision all higher, surface quality is also better.
3) the finish forge counterdie, in this mould is embedded in described base, the upper surface of finish forge counterdie is mutually concordant with the upper surface of base simultaneously, this structure makes base also be applied with enough pressure to finish forge counterdie in forging process, thus ensure that the accuracy of forging, and improve the forging effect to blank.
In this mould, low punch is not set, thus not only reduces manufacturing cost, also reduce the rigging error of mould, further increase the accuracy of forging.
4), this mould structure is simple, and production cost is lower, and product dimensional accuracy is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 be finish forge patrix and finish forge counterdie not closed time structural representation.
Fig. 3 is finish forge patrix and finish forge counterdie structural representation when closing.
The implication marked in figure is as follows:
Seat 30-base 40-upper punch under the 20-lathe of 10-lathe seat of honour
50-finish forge patrix, 51-upper die unit, 60-finish forge counterdie, 70-Hough connects frame
80-high-voltage oil cylinder, 90-blank
Detailed description of the invention
The cold temperature finish forge mould of a kind of enclosed for straight bevel gear as shown in Figure 1, comprise finish forge patrix 50, finish forge counterdie 60 and upper punch 40, described finish forge patrix 50 is combined by some pieces of upper die unit 51, each block upper die unit 51 is all provided with the driving mechanism corresponding with it, and described upper die unit 51 is in be connected with each other and to enclose to form finish forge patrix 50 and four under the driving of driving mechanism falls apart separately so that take out the two states of forging 90; The upper end that each upper die unit 51 described is connected with each other is provided with the passage passed through for upper punch 40.
Preferably, the die joint between described finish forge patrix 50 and finish forge counterdie 60 is plane, and each upper die unit 51 of composition finish forge patrix 50 under the effect of driving mechanism along die joint translation.
Further, as shown in Figure 1, 2, described driving mechanism comprises and connects frame 70 and power source with the Hough of upper die unit 51 Joint, described Hough connects frame 70 in block, block Hough connects the outside that frame 70 is coated on upper die unit 51, and Hough connects frame 70 along pressing direction and the size being all greater than upper die unit 51 along the size in die joint direction; Described Hough connects paralleling with die joint of frame 70 and the drive end of the side and power source that deviate from upper die unit 51 is connected; The upper end be connected with each other that each Hough described connects frame 70 is provided with the passage passed through for upper punch 40.
Preferably, described power source is the high-voltage oil cylinder 80 be connected with oil pump, and the side deviating from upper die unit 51 that piston rod 81 and the Hough of high-voltage oil cylinder 80 connect frame 70 is connected.
Further, the downside of described finish forge counterdie 60 is provided with base 30, and finish forge counterdie 60 is embedded in described base 30, and the upper surface of finish forge counterdie 60 is mutually concordant with the upper surface of base 30; Each upper die unit 51 of described composition finish forge patrix 50 is all arranged on the upper surface of base 30, and the upper surface of the lower surface of each upper die unit 51 and base 30 forms and is slidably matched.
Preferably, the lower surface that Hough connects frame 70 is mutually concordant with the lower surface of upper die unit 51, and the upper surface of the Hough lower surface and base 30 that connect frame 70 forms and is slidably matched.
Preferably, described finish forge patrix 50 is profile of tooth die, and finish forge counterdie 60 is back cone die.
Below in conjunction with accompanying drawing, the course of work of the present invention is described further.
As shown in Figure 2, when forging starts, high-voltage oil cylinder 80 orders about Hough by piston rod 81 and connects frame 70 and outwards disperse translation along die joint, and Hough connects frame 70 and drives upper die unit 51 outwards translation corresponding thereto immediately; Then blank 90 is put into finish forge counterdie 60 by operating personnel, then each upper die unit 51 is enclosed in together to form a complete finish forge patrix 50 under the effect of high-voltage oil cylinder 80, finish forge patrix 50 is pressed against the upside of finish forge counterdie 60 tightly under the effect of high-voltage oil cylinder simultaneously, now form the die cavity be accommodated therein by blank 90 between finish forge patrix 50 and finish forge counterdie 60, as shown in Figure 3; The passage that upper punch 40 encloses through each upper die unit 51 upper end from top to bottom under the effect of forcing press such as electric screw press also stretches in described closed die cavity, and upper punch 40 is the forging of setting shape to described blank 90 extrusion molding; After punching press terminates, each upper die unit 51 four loose separately thus is convenient to take out forging under the effect of high-voltage oil cylinder 80, and now whole forging process terminates.
Adopt this mould to forge, forging equipment can be made to invest minimizing 60%, and forging part utilization rate brings up to 80% ~ 90%, economize energy more than 20%, and production efficiency improves 30% simultaneously.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (5)
1. the cold temperature of the enclosed for a straight bevel gear finish forge mould, comprise finish forge patrix (50), finish forge counterdie (60) and upper punch (40), it is characterized in that: described finish forge patrix (50) is combined by some pieces of upper die unit (51), each block upper die unit (51) is all provided with the driving mechanism corresponding with it, and described upper die unit (51) is in be connected with each other and to enclose to form finish forge patrix (50) and four under the driving of driving mechanism falls apart separately so that take out the two states of forging (90); The upper end that described each piece of upper die unit (51) is connected with each other is provided with the passage passed through for upper punch (40);
Die joint between described finish forge patrix (50) and finish forge counterdie (60) is plane, and composition finish forge patrix (50) each piece of upper die unit (51) under the effect of driving mechanism along die joint translation;
Described driving mechanism comprises and connects frame (70) and power source with the Hough of upper die unit (51) Joint, described Hough connects frame (70) in block, block Hough connects the outside that frame (70) is coated on upper die unit (51), and Hough connects frame (70) along pressing direction and the size being all greater than upper die unit (51) along the size in die joint direction; Described Hough connects paralleling with die joint of frame (70) and the side deviating from upper die unit (51) is connected with the drive end of power source; The upper end be connected with each other that each Hough connects frame (70) is provided with the passage passed through for upper punch (40).
2. the cold temperature finish forge mould of the enclosed for straight bevel gear according to claim 1, is characterized in that: described power source is the high-voltage oil cylinder (80) be connected with oil pump.
3. the cold temperature finish forge mould of the enclosed for straight bevel gear according to claim 1, it is characterized in that: the downside of described finish forge counterdie (60) is provided with base (30), and finish forge counterdie (60) is embedded in described base (30), the upper surface of finish forge counterdie (60) is mutually concordant with the upper surface of base (30); Each piece of upper die unit (51) of described composition finish forge patrix (50) is all arranged on the upper surface of base (30), and the upper surface of the lower surface of each piece of upper die unit (51) and base (30) forms and is slidably matched.
4. the cold temperature finish forge mould of the enclosed for straight bevel gear according to claim 3, it is characterized in that: the lower surface that Hough connects frame (70) is mutually concordant with the lower surface of upper die unit (51), and the upper surface of the Hough lower surface and base (30) that connect frame (70) forms and is slidably matched.
5. the cold temperature finish forge mould of the enclosed for straight bevel gear according to claim 3, is characterized in that: described finish forge patrix (50) is profile of tooth die, and finish forge counterdie (60) is back cone die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210517251.8A CN103056264B (en) | 2012-12-06 | 2012-12-06 | Closed cold-temperature precision forging die for straight-tooth bevel gear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210517251.8A CN103056264B (en) | 2012-12-06 | 2012-12-06 | Closed cold-temperature precision forging die for straight-tooth bevel gear |
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| CN103056264A CN103056264A (en) | 2013-04-24 |
| CN103056264B true CN103056264B (en) | 2015-01-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103433418B (en) * | 2013-07-03 | 2016-08-17 | 中国农业大学 | A kind of spiral bevel gear finish forge device and method |
| CN107855455B (en) * | 2017-12-21 | 2019-08-16 | 嘉兴市鹏程磁钢有限公司 | A kind of magnet steel blank forming particular manufacturing craft |
| CN108672644B (en) * | 2018-05-04 | 2019-11-19 | 杭州前进锻造有限公司 | The high forging ratio piston seat proceeding closed fine forging method of construction machinery gear box |
| CN108817226A (en) * | 2018-07-03 | 2018-11-16 | 太仓久信精密模具股份有限公司 | A kind of speed reducer stainless steel material minute gear heating extrusion forming process |
| CN110976730A (en) * | 2019-12-26 | 2020-04-10 | 如皋市林达线路金具有限公司 | One-step forging forming process for inner cavity of ball socket hardware fitting |
| CN112620503A (en) * | 2020-11-02 | 2021-04-09 | 无锡昌至盛机械制造有限公司 | Punch press hydraulic pressure autosegregation harbour workstation |
| CN113547056A (en) * | 2021-07-27 | 2021-10-26 | 上海汽车变速器有限公司 | Forming process of automobile half-shaft bevel gear |
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| CN1644267A (en) * | 2004-12-20 | 2005-07-27 | 华中科技大学 | Special hydraulic mould stand |
| CN101985153A (en) * | 2010-08-02 | 2011-03-16 | 天津市天锻压力机有限公司 | Two-half combined forging mould clamping mechanism |
| CN201823864U (en) * | 2010-10-15 | 2011-05-11 | 重庆富川机电有限公司 | Forming die for precision-forging stocks of primary driving teeth |
| CN202123183U (en) * | 2011-06-03 | 2012-01-25 | 刘绍东 | Light alloy integral die forging extrusion forming die for automobile hub |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11314134A (en) * | 1998-05-06 | 1999-11-16 | Komatsu Ltd | Die device for closed forging |
| JP4274439B2 (en) * | 2005-10-31 | 2009-06-10 | 株式会社小松製作所 | Molding equipment for closed forging |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644267A (en) * | 2004-12-20 | 2005-07-27 | 华中科技大学 | Special hydraulic mould stand |
| CN101985153A (en) * | 2010-08-02 | 2011-03-16 | 天津市天锻压力机有限公司 | Two-half combined forging mould clamping mechanism |
| CN201823864U (en) * | 2010-10-15 | 2011-05-11 | 重庆富川机电有限公司 | Forming die for precision-forging stocks of primary driving teeth |
| CN202123183U (en) * | 2011-06-03 | 2012-01-25 | 刘绍东 | Light alloy integral die forging extrusion forming die for automobile hub |
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| CN103056264A (en) | 2013-04-24 |
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