CN102728757B - Hammer forging device for forming complicated long-axis forgings applied to radial forging machine - Google Patents
Hammer forging device for forming complicated long-axis forgings applied to radial forging machine Download PDFInfo
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- CN102728757B CN102728757B CN201210174582.6A CN201210174582A CN102728757B CN 102728757 B CN102728757 B CN 102728757B CN 201210174582 A CN201210174582 A CN 201210174582A CN 102728757 B CN102728757 B CN 102728757B
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- model seat
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Abstract
The invention relates to a hammer forging device for forming complicated long-axis forgings applied to a radial forging machine. The hammer forging device consists of forging units which are respectively mounted on hammers of a precise forging machine and have the same structure, wherein each forging unit consists of a fixed mold seat, a moving mold seat, a forming module and the like. Different from the existing forging method, according to the hammer forging device, the relative positions of the moving mold seats and the fixed mold seats are maintained by using compressed slide blocks, when the compressed slide blocks are opened, driving gears mounted on the fixed mold seats drive tooth rings machined at the top ends of dovetails of the moving mold seats so as to realize the circumferential feeding of the moving mold seats, and thus, variable plastic deformation zones are formed by regions among the forming modules; and blanks are clamped to make axial and rotational movement by using a clamping head of the radial forging machine, so that the blanks are progressively formed in a piecewise manner, and then, the long-axis forgings which need multiple mold parting directions and have complicated cross sectional shapes, helical line characteristics and larger sizes can be forged.
Description
Technical field
The invention belongs to plastic forming technology field, especially relate to a kind of hammering device for the complicated long-axis forging that is shaped on radial forging.
Background technology
Longaxones parts is part type conventional in mechanical device, adopts Forging Technology to produce the blank of longaxones parts, can reduce significantly follow-up machining amount, improves product quality.But the longaxones parts blank of some type cannot or be difficult to adopt traditional rolling, roll forging and pressing method to be shaped: as cross section has the part of a plurality of branching characteristics, such part is as adopted the methods such as die forging, roll forging to be difficult to parting, if adopt extruding to be difficult to carry out because workpiece size gradually changes along axis direction; And for example, with the part of spiral yarn shaped feature, if particularly also changed along axis direction cross section profile size, be also difficult to adopt conventional method to form; In addition, for the large forgings having compared with complicated shape, if adopt contour forging technique to be shaped, can be very high to the tonnage demand of forging equipment, usually can exceed the ability of existing equipment, thereby be difficult to realize.
Dong Xianghuai etc. invented a kind of adopt simple tool to produce the longaxones parts of complicated shape or the progressive milling method of blank (patent No. is: CN200910055960), section bar and blank that the method can be shaped and can change along the shape in axis direction cross section, but need to be through rolling back and forth, careful local feature can not be shaped.
Therefore, develop a kind of thought of progressive bulk forming, near-net-shape method of be shaped complicated shape and relatively large forging of utilizing, light-weight design and manufacture for machine parts and structure, have important facilitation.
Summary of the invention
Object of the present invention is exactly to provide a kind of hammering device for the complicated long-axis forging that is shaped on radial forging of producing the near-net-shape of complicated shape and relatively large forging by progressive bulk forming mode in order to overcome the defect of above-mentioned prior art existence.
Object of the present invention can be achieved through the following technical solutions:
A kind of hammering device for the complicated long-axis forging that is shaped on radial forging, by the forging unit that is arranged on the same structure on each tup of radial forging, formed, described forging unit comprises fixedly die holder, dynamic model seat and shaping module, described fixedly die holder is arranged in the arc groove of template through bolt, described dynamic model seat and the shaping module being arranged on dynamic model seat are moved and are made the region between each shaping module form variable plastically deforming area along arc surface, utilize radial forging machine grip holder clamping blank do axially and rotatablely move, make it progressive molding piecemeal, forge the long-axis forging of complicated shape.
The die cavity of unit in shaping module respectively corresponding with the surface of workpiece different piece thereby differ from one another, the structure of remainder is all identical.The region that each mold cavity surface that forges unit forming module surrounds forms the local plastic deformation district of workpiece.Shaping module is connected on dynamic model seat with bolt, and dynamic model seat can be along contact circumference with respect to fixedly die holder slip, and this is similar to the rotation of mould in roll forging, can make the shape of deformed area change thereupon; With chuck send to and rotation matches, the section shape and size that just can make forging changes along its axis direction.Radial forging machine grip holder can control on the one hand workpiece spindle to dimensional accuracy, can to forge, be the feature that helix distributes by rotational workpieces on the other hand.For the forging load of balance tup, reduce the unbalance loading of radial forging frame, the cross sectional shape of forging preferably has the symmetry roughly adapting with tup number, makes relative tup load energy in a basic balance.
Described fixedly die holder is installed in template by arc-shaped slot, and fixedly die holder can be installed with certain deflection angle with respect to template, and described template is arranged on radial forging tup by bolt.
Described fixedly die holder front end is the face of cylinder, along this face center line, has dovetail groove, is connected with the dovetail on dynamic model seat; Fixedly die holder center has gear mounting groove, cogged mount pad is installed in groove, the motor that drives driven wheel is installed on this mount pad, the gear that mount pad is installed is meshed with the gear ring that the dovetail top of dynamic model seat processes, drive dynamic model seat and shaping module to make circle-feeding, change the local deformation district shape between shaping module.
Described fixedly die holder and the cylindrical contact-making surface between dynamic model seat are matsurface, 4 compact heaps are fixedly installed on die holder, compact heap embeds in 2 T-slots that distribute along arc surface of dynamic model seat inner side, and dynamic model seat is pressed on fixedly on die holder to dynamic model seat and fixedly the rough contact surface close contact between die holder under the effect of spring; Dynamic model seat utilizes hydraulic pressure, pneumatic or solenoid actuated compact heap while doing circle-feeding motion with respect to fixing die holder, and dynamic model seat and the fixing rough contact surface between die holder are separated, and starter motor driven gear driving dynamic model seat is realized circle-feeding.
Described motor and dynamic model seat driven wheel are arranged on a base with buffer spring, and floor installation is in the counterbore that fixedly die holder nose circle cylinder center is outputed; Buffer spring makes the internal gear of driven wheel and dynamic model seat dovetail end face keep engagement, and dynamic model seat when fixedly the rough contact surface between die holder is separated by the pushing away action of compact heap, drives dynamic model seat along circle-feeding.
The outer surface of described shaping module all processes the die cavity distributing along the face of cylinder, and the region being surrounded by each shaping module die cavity forms the local deformation district of workpiece, can change the shape of deformed area by the circle-feeding of shaping module; The smallest cross-sectional of deformed area is determined by the physical dimension in the corresponding cross section of workpiece; In deformed area, between each shaping module, leave gap, excess stock is extruded as overlap by gap.
This device forges complicated long-axis forging in two steps:
1) prefabricated blank, the square-section blank that metal bar is forged into width vertically and changes by predetermined rule highly respectively, or the circular cross-section blank that changes by predetermined rule of diameter;
2) this forging apparatus is installed on radial forging, according to the motion control program of tup and chuck in analog computation and experiment establishment forging process, control the depressing of shaping module, feeding rule, and the sending to of chuck, rotation regulation, by progressively changing the shape in local deformation district that shaping module surrounds and the axial location in the local deformation district of workpiece, forge progressively the forging that section shape and size changes by predetermined rule vertically.
Compared with prior art, the present invention has following significant advantage:
1. traditional radial forging adopts the tup of shape invariance, be only applicable to forge cross-sectional geometry simple and constant but axle class, tubing forging that size is variable, if adopt plug also can forge the rifling of inwall, and the present invention can forge the forging of complicated shape;
2. in traditional roll forging there is continuous distortion in workpiece, due to the impact of advancing slip and rear cunning, the axial dimension precision of roll forging part is not high, generally only for base, and the local deformation of workpiece generation discontinuity in the present invention, its axial dimension precision can be controlled by chuck;
3. in traditional die forging, mould only has a parting direction, the complexity of workpiece geometries is restricted, restraining force horizontal in open die forging, impressing forging will provide by overlap, and material consumption is larger, and in the present invention, the beating position of each tup all forms a parting direction, the circle-feeding of shaping module coordinates with the axial feed of chuck and rotating photo, can forge the workpiece that shape is more complicated, and each tup can provide the required load that is shaped, so the overlap forming is very little;
4. in traditional die forging, whole workpiece deforms, and shaping load is very large, and the local deformation of workpiece generation discontinuity in the present invention is a kind of progressive bulk forming method, and the energy consumption that single forges is little, can forge relatively large forging.
Although adopt method of the present invention only can guarantee the sectional dimension precision of workpiece in deformed area smallest cross-sectional, and in the both sides in this cross section, all there is the excess stock that is circle-shaped distribution, but if in the end passage adopts little drafts and feed, just can reduce excess stock, improve sectional dimension precision.
Accompanying drawing explanation
Fig. 1 is decomposition texture schematic diagram of the present invention;
Fig. 2 is the fixing structural representation of die holder;
Fig. 3 is the structural representation of dynamic model seat driving mechanism;
Fig. 4 is the structural representation of compact heap Control Component;
Fig. 5 is " X " type variable section workpiece exemplary plot;
Fig. 6 is the schematic diagram of " X " type variable section workpiece deformed area smallest cross-sectional;
Fig. 7 is the forging method schematic diagram with spiral yarn shaped characteristic part.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
Hammering device for the complicated long-axis forging that is shaped on radial forging, its structure as shown in Figure 1, mainly by following parts, combined: the forging unit that is installed on each radial forging tup, it is all identical that each forges unit other parts except shaping module, and its structure comprises: shaping module 1, dynamic model seat 2, fixedly die holder 3, template 14, compact heap Control Component 4, compact heap 5, compact heap Control Component fixed head 6, gear installation base 9 etc.4 tups of the general employing of radial forging, this example also adopts 4 tups, is installed on respectively 4 shaping modules 1 of forging unit and forms plastically deforming areas.
Below the structure of several critical pieces of the present invention is described in detail.
Fixedly die holder 3 comprises following structure: 4 installing holes are arranged at bottom, are installed in the arc groove of template 14 by bolt, makes it can be with respect to template deflection within the specific limits, and template is installed on radial forging tup by bolt; On nose circle cylinder, have the dovetail groove that axis is circular arc, for connecting on dynamic model seat the dovetail with top internal gear; Fixedly rectangle counterbore is opened at the center of die holder 3, and for gear installation base 9 is installed, the pinion stand guiding rib 8 in counterbore, as shown in Figure 2, matches with the gathering sill 13 of gear installation base; The structure of dynamic model seat driving mechanism as shown in Figure 3, the parts such as drive motors 12, dynamic model piece driven wheel 7 are installed on mount pad 9, gear installation base is installed to fixedly die holder by pre-pressing bolt 11 and the effect of support spring 10, when unclamping, compact heap 5 can assist compact heap Control Component that dynamic model seat is pushed away to fixedly die holder, and the internal gear of dynamic model seat dovetail end face and driven wheel always keep engagement, to realize the feeding of dynamic model seat; Fixedly the bottom of die holder has four circular counter bore, for compact heap Control Component 4 is installed.Control Component can adopt the modes such as electromagnetism, hydraulic pressure to drive; Here the Electromagnetic Drive of take describes as example, referring to Fig. 4: the spring 17 in Control Component always compresses dynamic model seat 2 to fixing die holder 3, utilize the frictional force on contact-making surface between them to prevent that dynamic model seat from tangential slip occurring; When dynamic model seat and shaping module need to be along circle-feedings, coil 18 energisings in Control Component, the fixed electromagnet 19 that makes to be installed on fixed head 21 with can motor magnet 16 adhesives, by spring 17 compressions, move down with the sliding shoe 15 can motor magnet 16 connecting firmly, promotion is attached thereto connecting rod 20 and the compact heap 5 connecing by bolt 22, dynamic model seat 2 and fixing die holder 3 are no longer close to; At this moment motor 12 can start, and driven gear 7 drives the internal gear on dynamic model seats 2, thus drive dynamic model seat 2 and the shaping module 1 that is mounted thereon along circle-feeding, change the shape in workpiece deformation district.
Dynamic model seat 2 comprises following structure: on the face of cylinder, inner side, having axis is the dovetail of circular arc, dovetail end face is processed into internal gear, be meshed with being installed on the fixedly driven wheel of die holder, realize circle-feeding, during feeding, the inclined-plane of dovetail both sides is along the dovetail groove slip on fixing die holder; More coarse surface is all processed on the face of cylinder inside dynamic model seat beyond the fixedly die holder front end dovetail groove of other parts on the face of cylinder and contact with it, to produce larger frictional force when they are compressed mutually, prevent that dynamic model seat from tangentially sliding tangential forging under load; Outside dynamic model seat, on the face of cylinder, have the groove of compact heap and pin hole and the screw hole of opening for shaping module 1 is installed are installed.
Shaping module 1 has pin hole and screw hole, to be installed on dynamic model seat 2; Shaping module outside processes die cavity by the shape of forging, the die cavity of 4 shaping modules cooperatively interacts, form local deformation district, along with dynamic model seat and the feeding tangentially of shaping module, the shape in local deformation district changes continuously, by progressive local deformation, forges the forging that cross sectional shape changes vertically.
Parting direction that forging apparatus of the present invention has a plurality of (being generally 4), thus can forge the forging that traditional die forging is difficult to parting, as there is the workpiece of " X " tee section feature, as shown in Figure 5, Fig. 6 is the diagram of corresponding deformed area smallest cross-sectional; Because the fixing setting angle of die holder can regulate by circular-arc mounting groove, and the action of forging hammer can coordinate with axial feed and the rotating photo of chuck, so malleable, go out outer surface and have the forging that is the feature that helix distributes, as shown in Figure 7, in fact forging section shape and size can also change vertically.
Operation principle of the present invention is:
The 1st step: prefabricated blank, the square-section blank that adopts the methods such as common radial forging that metal bar is forged into width vertically and changes by predetermined rule highly respectively, or the circular cross-section blank that changes by predetermined rule of diameter.
The 2nd step: forging apparatus of the present invention is installed on radial forging, according to the motion control program of tup and chuck in analog computation and experiment establishment forging process, control the depressing of shaping module, feeding rule, and the sending to of chuck, rotation regulation, by progressively changing the shape in local deformation district that shaping module surrounds and the axial location in the local deformation district of workpiece, forge progressively the forging that section shape and size changes by predetermined rule vertically.
Claims (7)
1. the hammering device for the complicated long-axis forging that is shaped on radial forging, it is characterized in that, this device is comprised of the forging unit that is arranged on the same structure on each tup of radial forging, described forging unit comprises fixedly die holder, dynamic model seat and shaping module, described fixedly die holder is arranged in the arc groove of template through bolt, described dynamic model seat and the shaping module being arranged on dynamic model seat are moved and are made the region between each shaping module form variable plastically deforming area along arc surface, utilize radial forging machine grip holder clamping blank do axially and rotatablely move, make it progressive molding piecemeal, forge the long-axis forging of complicated shape.
2. a kind of hammering device for the complicated long-axis forging that is shaped on radial forging according to claim 1, it is characterized in that, described fixedly die holder is installed in template by arc-shaped slot, fixedly die holder can be installed with certain deflection angle with respect to template, and described template is arranged on radial forging tup by bolt.
3. a kind of hammering device for the complicated long-axis forging that is shaped on radial forging according to claim 1, is characterized in that, described fixedly die holder front end is the face of cylinder, along this face center line, has dovetail groove, is connected with the dovetail on dynamic model seat; Fixedly die holder center has rectangle counterbore, cogged mount pad is installed in hole, the motor that drives driven wheel is installed on this mount pad, the gear of installing on mount pad is meshed with the gear ring that the dovetail top of dynamic model seat processes, drive dynamic model seat and shaping module to make circle-feeding, change the local deformation district shape between shaping module.
4. a kind of hammering device for the complicated long-axis forging that is shaped on radial forging according to claim 1, it is characterized in that, described fixedly die holder and the cylindrical contact-making surface between dynamic model seat are matsurface, 4 compact heaps are fixedly installed on die holder, compact heap embeds in 2 T-slots that distribute along arc surface of dynamic model seat inner side, and dynamic model seat is pressed on fixedly on die holder to dynamic model seat and fixedly the rough contact surface close contact between die holder under the effect of spring; Dynamic model seat utilizes hydraulic pressure, pneumatic or solenoid actuated compact heap while doing circle-feeding motion with respect to fixing die holder, and dynamic model seat and the fixing rough contact surface between die holder are separated, and starter motor driven gear driving dynamic model seat is realized circle-feeding.
5. a kind of hammering device for the complicated long-axis forging that is shaped on radial forging according to claim 3, it is characterized in that, described motor and dynamic model seat driven wheel are arranged on a gear installation base with support spring, and gear installation base is installed in the rectangle counterbore that fixedly die holder nose circle cylinder center is outputed; Support spring makes the internal gear of driven wheel and dynamic model seat dovetail end face keep engagement, and dynamic model seat when fixedly the rough contact surface between die holder is separated by the pushing away action of compact heap, drives dynamic model seat along circle-feeding.
6. a kind of hammering device for the complicated long-axis forging that is shaped on radial forging according to claim 1, it is characterized in that, the outer surface of described shaping module all processes the die cavity distributing along the face of cylinder, the region being surrounded by each shaping module die cavity forms the local deformation district of workpiece, can change the shape of deformed area by the circle-feeding of shaping module; The smallest cross-sectional of deformed area is determined by the physical dimension in the corresponding cross section of workpiece; In deformed area, between each shaping module, leave gap, excess stock is extruded as overlap by gap.
7. adopt a kind of hammering device for the complicated long-axis forging that is shaped on radial forging described in any one in claim 1-6, it is characterized in that, this device forges complicated long-axis forging in two steps:
1) prefabricated blank, the square-section blank that metal bar is forged into width vertically and changes by predetermined rule highly respectively, or the circular cross-section blank that changes by predetermined rule of diameter;
2) this forging apparatus is installed on radial forging, according to the motion control program of tup and chuck in analog computation and experiment establishment forging process, control the depressing of shaping module, feeding rule, and the sending to of chuck, rotation regulation, by progressively changing the shape in local deformation district that shaping module surrounds and the axial location in the local deformation district of workpiece, forge progressively the forging that section shape and size changes by predetermined rule vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210174582.6A CN102728757B (en) | 2012-05-30 | 2012-05-30 | Hammer forging device for forming complicated long-axis forgings applied to radial forging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210174582.6A CN102728757B (en) | 2012-05-30 | 2012-05-30 | Hammer forging device for forming complicated long-axis forgings applied to radial forging machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102728757A CN102728757A (en) | 2012-10-17 |
| CN102728757B true CN102728757B (en) | 2014-08-20 |
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| CN201210174582.6A Expired - Fee Related CN102728757B (en) | 2012-05-30 | 2012-05-30 | Hammer forging device for forming complicated long-axis forgings applied to radial forging machine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008514B (en) * | 2012-12-24 | 2015-09-30 | 重庆建设工业(集团)有限责任公司 | A kind of reducer pipe forming method |
| CN104707907B (en) * | 2015-02-09 | 2017-04-12 | 中国石油天然气股份有限公司 | Die used for processing hollow tube into screw pump stator and forming method thereof |
| CN105363980A (en) * | 2015-12-12 | 2016-03-02 | 内蒙古北方重工业集团有限公司 | Method for preparing forged SHSS (Semi-high Speed Steel) rolling mill roll by radial rotary precision forging |
| CN110496931B (en) * | 2019-09-29 | 2020-12-15 | 叶晓丹 | Shock-absorbing type blank clamping structure for forging |
| CN110778569B (en) * | 2019-11-08 | 2021-11-02 | 合肥合锻智能制造股份有限公司 | Anti-unbalance loading blank pressing cylinder device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1187977A (en) * | 1956-11-15 | 1959-09-17 | Appel Process Ltd | Forging machine |
| AT288117B (en) * | 1969-06-16 | 1971-02-25 | Ges Fertigungstechnik & Maschb | Tool for forging machines |
| SU490550A1 (en) * | 1973-12-11 | 1975-11-05 | Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов | Die cut |
| AT404441B (en) * | 1996-09-17 | 1998-11-25 | Gfm Holding Ag | FORGING MACHINE |
| US7210325B2 (en) * | 2004-12-27 | 2007-05-01 | Aries Engineering Company, Inc. | Tube thread forming apparatus and method |
| CN101356029B (en) * | 2007-01-24 | 2011-06-22 | “雅致普瑞斯玛氏”开放式股份公司 | Equipment for forging four-hammer |
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2012
- 2012-05-30 CN CN201210174582.6A patent/CN102728757B/en not_active Expired - Fee Related
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