CN104841712B - High-frequency flutter cold extruding die - Google Patents
High-frequency flutter cold extruding die Download PDFInfo
- Publication number
- CN104841712B CN104841712B CN201510221022.5A CN201510221022A CN104841712B CN 104841712 B CN104841712 B CN 104841712B CN 201510221022 A CN201510221022 A CN 201510221022A CN 104841712 B CN104841712 B CN 104841712B
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- China
- Prior art keywords
- die
- cylinder barrel
- flutter
- punch
- lower bolster
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a high-frequency flutter cold extruding die. The die comprises a forming mechanism and a flutter generation mechanism. The flutter generation mechanism comprises two independent flutter generators. Each flutter generator comprises a cylinder barrel base, a cylinder barrel, a piston, a piston rod and a cylinder barrel top cover. The cylinder barrels are connected with the cylinder barrel bases and the cylinder barrel top covers in a welding mode. The piston rods and the upper ends of the pistons are located through shaft shoulders, and the piston rods and the lower ends of the pistons are connected through welding. The cylinder barrel bases are connected onto a lower die holder through bolts, the cylinder barrel top covers are connected with a lower die plate, and the two flutter generators are disposed in the same straight line symmetrically. The die is simple and compact in structure, low in production cost, capable of providing to different flutter applying modes, large in vibration output force, controllable in frequency and amplitude and capable of guaranteeing the size accuracy while 'difficultly forming parts' vibration extrusion is completed.
Description
Technical field
The present invention relates to a kind of vibration-extrusion mould, particularly relate to a kind of high-frequency flutter cold extruding die.
Background technology
Cold extrusion is to make metal volume make plastic transfer on the premise of not destroying metal, reaches few chipless or makes without cutting
Metal forming, compared to traditional machining mode, cold extrusion has that material consumption is few, production efficiency is high, and mechanical property is excellent
More, the advantages such as complicated shape part can be shaped.Along with developing rapidly of auto manufacturing, to high accuracy, complex-shaped automobile
Parts demand is increasing, particularly some parts that machining is relatively difficult, processing cost is higher, as spur gear wheel,
Cylindrical screw gear and splined shaft etc., also required that and directly realized by cold-extrusion shaping mode；But, at this type of part of cold extrusion
Time, owing to itself shape is complex, material at room temperature flow stress is the highest, simultaneously the friction between mould and blank
Power also hampers the flowing of metal stock, causes the fullest and final stage the extruding force of profile of tooth filling too high to pressure
The tonnage of machine and die life etc. require more harsh.
In order to reduce frictional force and resistance of deformation, people attempt introducing vibration in metal forming, namely to being formed
Blank or mould apply certain frequency and the axial vibration of amplitude, make material produce plastic deformation in vibration.Chinese scholars
This was done numerous studies, found that vibration plastic working can be greatly lowered the resistance of deformation in forming process and attach other to product
Product favorable influence, as reduced the flow stress of material, reduces the frictional force between mould and workpiece and obtains more preferable surface quality
With higher dimensional accuracy etc..Therefore the economic worth that this technology is contained is apparent from.
At present, the principal mode of vibrational excitation has: power ultrasonic, mechanical type, electromagnetic type, fluid pressure type etc., wherein power ultrasonic
Most widely used general.But power ultrasonic to have output limited, usually 1～2kW, the exciting force therefore produced is little, uncomfortable
Conjunction cold extrusion is processed；Mechanical type excitation structure is simple, and output exciting force is big, but upper limiting frequency is low, amplitude and frequency regulation difficulty；
Electromagnetic type exciting device can produce the vibrational waveform of complexity, is limited by intrinsic magnetic saturation simultaneously, is difficult to obtain bigger exciting force,
In addition device structure is complicated, and amplitude finite sum needs extra chiller.Therefore, above-mentioned several device is not all suitable for " difficulty
Formation of parts " vibration-extrusion.
Being provided that sufficiently large exciting force based on hydraulically powered mode of vibration, one form of which is to be forced by oil liquid pressure to quiver
Cylinder top board generation elastic deformation of shaking realizes vibration, but owing to the elastic deformation amount of metal cannot accurately control, causes shaking of vibration
Unpredictable and control, and direction of vibration is single, this causes certain for practical study and the application of cold extrusion vibration machining
Hinder and limit.
Summary of the invention
It is an object of the invention to overcome existing cold extrusion tremor extrusion die amplitude and frequency is unpredictable and controls, and shake
The defect that flowing mode is single, it is provided that a kind of frequency, amplitude, execute the time of shaking and to execute the opportunity of shaking controlled, is provided that multiple tremor
The high-frequency flutter cold extruding die of mode.
The present invention is achieved through the following technical solutions above-mentioned purpose: a kind of high-frequency flutter cold extruding die, including shaping mechanism and
Tremor generating mechanism；
Described shaping mechanism includes cope match-plate pattern, punch Flange joint block, punch fixed block, punch, die, lower punch, die
Fixed block, die socket, die Flange joint block, lower bolster, die shoe, liftout sheet and ejector beam, described punch is arranged on institute
Stating in punch fixed block, described punch fixed block is connected with punch Flange joint block and the cope match-plate pattern of surface by bolt；Described
Die is arranged in the die fixed block immediately below described punch, and described die contacts with the described die socket of underface, described recessed
Die holder contacts with the die Flange joint block of underface, and described die fixed block is by the die Flange joint block of bolt with underface
Connect with lower bolster；Described liftout sheet be cross section be the strip of circular arc, described liftout sheet is arranged on the logical of lower punch and die socket
In hole, described ejector beam is arranged in the centre bore of die Flange joint block and lower bolster, the upper end of described ejector beam and described top
Tablet connects；
Described tremor generating mechanism includes that left flutter generator and right flutter generator, described left flutter generator and right tremor occur
Device all includes that cylinder barrel base, cylinder barrel, piston, piston rod and cylinder barrel top cover, described cylinder barrel base and cylinder barrel top cover are welded on cylinder barrel
Two ends up and down, the upper end of described piston rod and piston positions by the shaft shoulder, and described piston rod passes through to be welded and fixed with the lower end of piston；
Described cylinder barrel base is bolted on die shoe, and described cylinder barrel top cover connects lower bolster, described left flutter generator and the right side
Flutter generator is symmetrically distributed in the left and right sides of described ejector beam.
Further, dust ring, combined seal ring and supporting ring structure is used to seal between described piston rod and cylinder barrel top cover.
Which is used to achieve movable sealing, it is of course also possible to use other sealing means.
Further, left flutter generator and right flutter generator use same high frequency valve to control, but oil circuit control is contrary.Apply
After vibrating signal, flutter generator drives above-mentioned lower bolster to do micro-swinging along mould axis of symmetry, owing to part of the lower die is fixed on down
In template, therefore lower mold swing in high frequency the most a little.
Further, left flutter generator and right flutter generator use same high frequency valve to control, and oil circuit control is identical.Apply
After vibrating signal, flutter generator drives above-mentioned lower bolster to make high frequency tremor a little vertically, owing to part of the lower die is fixed on lower mold
On plate, therefore lower mold high frequency tremor the most a little.
The technology of the present invention is contemplated that: as a example by right flutter generator, and fluid enters from cylinder barrel side two hydraulic fluid port and is full of cylinder barrel oil
Chamber, due to the sealing between piston and cylinder barrel, and piston and piston rod, cylinder barrel oil pocket is isolated into upper and lower two parts by piston,
And connected with hydraulic control valve by upper and lower hydraulic fluid port respectively；By hydraulic control valve input being specified the vibration signal of parameter, adjustable
Oil liquid pressure in lower oil cavitie on control cylinder barrel, piston and piston rod, under the effect of upper lower oil cavitie pressure differential, carry out micro-in cylinder barrel
The reciprocating motion of width, drives lower bolster micro breadth oscillation, and a kind of control method is that the oil circuit control direction of two flutter generators is identical,
Then lower bolster makees axially tremor a little；Another kind of control thinking is that the oil circuit control of two flutter generators is in opposite direction, then lower mold
Plate makees micro-swinging along mold axis, and owing to part of the lower die is fixed on lower bolster, therefore move with lower bolster in part of the lower die, it is achieved
Tremor extrudes.
The beneficial effects of the present invention is: present configuration is the compactest, production cost is low, only need to add on existing equipment and quiver
Shake generating mechanism, and in addition to high frequency valve, the performance requirement of other element is the highest, and therefore, electrohydraulic fluttering system is vibrated with other
Equipment is compared has price advantage；Mode of vibration of the present invention is various.The present invention can provide two kinds of different tremor directions, a kind of
For traditional axial vibration, one is along axis of symmetry swing in high frequency；The flutter frequency of the present invention, amplitude are controlled；The present invention uses
High frequency flutter generator simple in construction, while ensureing that power output is enough, frequency of vibration and amplitude are accurately controlled.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of high-frequency flutter cold extruding die of the present invention；
Fig. 2 is the structural representation of left flutter generator；
Fig. 3 is flutter generator piston rod and cylinder barrel top plate seal schematic diagram；
Fig. 4 is flutter generator piston seal schematic diagram；
Fig. 5 is that lower mold swings tremor generating mechanism control schematic diagram；
Fig. 6 is that lower mold axial tremor tremor generating mechanism controls schematic diagram.
In figure, 1-cope match-plate pattern, 2-punch Flange joint block, 3-punch fixed block, 4-punch, 5-die, 6-die fixed block,
7-lower punch, 8-die socket, 9-die Flange joint block, 10-lower bolster, 11-flutter generator, 12-die shoe, 13-liftout
Bar, 14-liftout sheet, 15-blank, 16-piston rod, 17-cylinder barrel top cover, 18-cylinder barrel, 19-piston, 20-cylinder barrel base, 21-
Dust ring, 22-combined seal ring, 23-support ring I, 24-support ring II.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
With reference to Fig. 1～Fig. 6, a kind of high-frequency flutter cold extruding die, including shaping mechanism and tremor mechanism, shaping mechanism includes
Template 1, punch Flange joint block 2, punch fixed block 3, punch 4, die 5, lower punch 7, die fixed block 6, die
Seat 8, die Flange joint block 9, lower bolster 10, liftout sheet 14, ejector beam 13, punch 4 is arranged in punch fixed block 3,
Punch fixed block 3 is connected with surface punch Flange joint block 2 and cope match-plate pattern 1 by bolt, and be positioned at immediately below punch 4 is recessed
Mould 5 is arranged in die fixed block 6, and die 5 contacts with the die socket 8 of underface, die socket 8 and the die method of underface
Blue contiguous block 9 contacts, and die fixed block 6, die Flange joint block 9 are bolted with lower bolster 10.Liftout sheet 14
For the strip of cross section circular arc, being arranged in the emptying aperture of lower punch 4 and die socket 8, ejector beam 13 is arranged on die Flange joint
In block 9, lower bolster 10 centre bore, the upper end of ejector beam 13 contacts with liftout sheet 14.
Tremor generating mechanism is had mutually isostructural left flutter generator by two and right flutter generator forms, left flutter generator
Cylinder barrel base 20, cylinder barrel 18, piston 19, piston rod 16, cylinder barrel top cover 17 is all included with right flutter generator.Cylinder barrel 18
Being connected by welding manner with cylinder barrel top cover 17 with cylinder barrel base 20, piston rod 16 positions by the shaft shoulder with piston 19 upper end, under
End is by being welded together.Cylinder barrel base 20 is bolted on die shoe 12, cylinder barrel top cover 17 and lower bolster
10 connect, and two flutter generators are located along the same line, and are arranged symmetrically with.
Further, the sealing between piston rod 16 and cylinder barrel top cover 17 uses dust ring 21, combined seal ring 22 and support ring
I 23 structures realize, and use support ring II 24 and combined seal ring 22 structure to realize between piston 19 and cylinder barrel 18.
Such as the control schematic diagram that Fig. 5 is a kind of tremor generating mechanism, two, left and right flutter generator uses same high frequency valve controller
Guarantee is synchronized with the movement, but the oil circuit control of two flutter generators is contrary, and lower bolster can be driven along mold axis direction micro-swinging
Such as the control schematic diagram that Fig. 6 is another kind of tremor generating mechanism, the oil circuit control direction of two flutter generators in left and right is identical,
Lower bolster up-down vibration the most a little can be driven.
Operation principle: as a example by right flutter generator 11, fluid enters from cylinder barrel 18 side two hydraulic fluid port p1 and p2 and is full of cylinder
Cylinder 18 oil pockets, due to piston 19 and the sealing between cylinder barrel 18, and piston 19 and piston rod 16, cylinder barrel 18 oil pocket quilt
Piston 19 is isolated into upper and lower two parts, and is connected with hydraulic control valve by upper and lower hydraulic fluid port respectively；By hydraulic control valve is inputted
Specifying the vibration signal of parameter, the oil liquid pressure in lower oil cavitie on controllable cylinder barrel, piston 19 and piston rod 16 are at upper lower oil cavitie
Under the effect of pressure differential, carrying out reciprocating motion a little, drive lower bolster 10 micro breadth oscillation in cylinder barrel, a kind of control method is
The oil circuit control direction of two flutter generators 11 is identical, then lower bolster 10 makees axially tremor a little；The another kind of thinking that controls is
The oil circuit control of two flutter generators is in opposite direction, then lower bolster makees micro-swinging along mold axis, owing to part of the lower die is fixed
On lower bolster 10, therefore move with lower bolster in part of the lower die, it is achieved tremor extrudes.
Above-described embodiment is presently preferred embodiments of the present invention, is not the restriction to technical solution of the present invention, as long as without
The technical scheme that creative work can realize on the basis of above-described embodiment, the right being regarded as falling into patent of the present invention is protected
In the range of protecting.
Claims (4)
1. a high-frequency flutter cold extruding die, it is characterised in that: include shaping mechanism and tremor generating mechanism；Described molding
Mechanism includes cope match-plate pattern, punch Flange joint block, punch fixed block, punch, die, lower punch, die fixed block, die
Seat, die Flange joint block, lower bolster, liftout sheet, ejector beam, described punch is arranged in described punch fixed block,
Described punch fixed block is connected with the punch Flange joint block described in surface and cope match-plate pattern by bolt, is positioned at immediately below punch
Described die be arranged in die fixed block, described die contacts with the described die socket of underface, described die socket with
The described die Flange joint block contact of underface, described die fixed block, die Flange joint block lead to described lower bolster
Cross bolt to connect；The described strip that liftout sheet is cross section circular arc, is arranged on above-mentioned lower punch and the sky of above-mentioned die socket
In hole, described ejector beam is arranged in above-mentioned die Flange joint block, lower bolster centre bore, the upper end of described ejector beam
Contact with described liftout sheet；
Described tremor generating mechanism is made up of two independent flutter generators, and described flutter generator includes: cylinder barrel base,
Cylinder barrel, piston, piston rod, cylinder barrel top cover；Described cylinder barrel passes through to weld with described cylinder barrel base and described cylinder barrel top cover
Mode connects, and described piston rod positions by the shaft shoulder with described piston upper end, and described piston rod leads to described piston
Cross and be welded together；Described cylinder barrel base is bolted on die shoe, and described cylinder barrel top cover is with lower bolster even
Connecing, two described flutter generators are located along the same line, and are arranged symmetrically with.
A kind of high-frequency flutter cold extruding die the most according to claim 1, it is characterised in that: described piston rod and cylinder barrel top cover it
Between use dust ring, combination sealing and supporting ring structure.
A kind of high-frequency flutter cold extruding die the most according to claim 1, it is characterised in that: two flutter generators use same
High frequency valve controls, but oil circuit control is contrary；After applying vibrating signal, flutter generator drives above-mentioned lower bolster along mould axis of symmetry
Do micro-swinging, owing to part of the lower die is fixed on lower bolster, therefore lower mold swing in high frequency the most a little.
A kind of high-frequency flutter cold extruding die the most according to claim 1, it is characterised in that: two flutter generators use same
High frequency valve controls, and oil circuit control is identical；After applying vibrating signal, flutter generator drives above-mentioned lower bolster to make vertically a little
High frequency tremor, owing to part of the lower die is fixed on lower bolster, therefore lower mold high frequency tremor the most a little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221022.5A CN104841712B (en) | 2015-05-04 | 2015-05-04 | High-frequency flutter cold extruding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221022.5A CN104841712B (en) | 2015-05-04 | 2015-05-04 | High-frequency flutter cold extruding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104841712A CN104841712A (en) | 2015-08-19 |
| CN104841712B true CN104841712B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510221022.5A Expired - Fee Related CN104841712B (en) | 2015-05-04 | 2015-05-04 | High-frequency flutter cold extruding die |
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| Country | Link |
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| CN (1) | CN104841712B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195542B (en) * | 2015-09-23 | 2017-09-08 | 浙江工业大学义乌科学技术研究院有限公司 | A kind of twisting vibration composite wax powder mould |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3118206B2 (en) * | 1997-05-14 | 2000-12-18 | 新日軽株式会社 | Extrusion dies |
| JPH11114622A (en) * | 1997-10-13 | 1999-04-27 | Showa Alum Corp | Extruding tool for extruding semi-hollow material |
| CN102380517B (en) * | 2011-10-19 | 2014-03-26 | 浙江工业大学 | Multifunctional vibration extrusion die based on electro-hydraulic servo driving |
| CN202366981U (en) * | 2011-11-29 | 2012-08-08 | 浙江工业大学 | High-frequency flutter cold extrusion die |
| CN102581054B (en) * | 2012-02-29 | 2014-03-26 | 浙江工业大学 | High frequent chattering cold extruding die possessing ejection rod |
| CN103447339A (en) * | 2013-08-23 | 2013-12-18 | 浙江工业大学 | Triaxial high-frequency composite flutter cold extrusion die |
| CN104289545B (en) * | 2014-09-23 | 2016-04-13 | 浙江工业大学 | A kind of electric-liquid type flutter platform for cold extrusion vibration machining |
| CN204747103U (en) * | 2015-05-04 | 2015-11-11 | 浙江工业大学 | High frequency cold extruding die that shimmys |
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2015
- 2015-05-04 CN CN201510221022.5A patent/CN104841712B/en not_active Expired - Fee Related
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| CN104841712A (en) | 2015-08-19 |
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Granted publication date: 20170111 Termination date: 20190504 |