CN104550607B - Rotary forge forming die and rotary forge forming method - Google Patents

Rotary forge forming die and rotary forge forming method Download PDF

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Publication number
CN104550607B
CN104550607B CN201410831959.XA CN201410831959A CN104550607B CN 104550607 B CN104550607 B CN 104550607B CN 201410831959 A CN201410831959 A CN 201410831959A CN 104550607 B CN104550607 B CN 104550607B
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mould
suitability
die
press forming
press
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CN104550607A (en
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边翊
翟月雯
钟志平
李凤娇
马晓晖
彭冲
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Beijing Research Institute of Mechanical and Electrical Technology
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Beijing Research Institute of Mechanical and Electrical Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00Forging presses
    • B21J9/02Special design or construction
    • B21J9/025Special design or construction with rolling or wobbling dies

Abstract

The invention discloses a rotary forge forming die and a rotary forge forming method. The rotary forge forming die comprises an upper die (8) and a lower die, wherein through the downward impact action of the upper die (8), a blank on the lower die is subjected to forge forming, the lower die can be driven by a motor so as to rotate by taking a vertical rotating axis (C3) as a center, and a center line (C1) of the upper die (8) is inclined relative to the vertical rotating axis (C3) of the lower die. By adopting the rotary forge forming die and the rotary forge forming method, the equipment tonnage can be reduced, the manufacturing cost is reduced, the production efficiency of aluminum alloy wheels and the like can be effectively improved, and the production cost is reduced.

Description

Rotation excellent suitability for press forming mould and rotation forging and molding method
Technical field
The present invention relates to a kind of rotation excellent suitability for press forming mould and rotation forging and molding method, belong to metal-pressed machine neck Domain.
Background technology
Automotive wheel is the vitals for ensureing vehicle safety travel.Compared to steel wheel, aluminum-alloy wheel can subtract Light car weight, reduction fuel consumption, its bearing capacity is strong, good decorating effect, is more and more favored by people.Current world aluminum In alloy wheel manufacturing, lightweight, product quality, manufacturing cost have become three big core competitive power factors of product.At present The aluminum-alloy wheel production technology that both at home and abroad enterprise generally adopts mainly has low pressure casting method, squeeze casting method, three kinds of forging method.
Being most widely used for low pressure casting method, it is high, raw with production efficiency height, conforming product rate height, stock utilization Produce low cost and other advantages, have the disadvantage wheel for cast sturcture, wheel strength it is not high.
Squeeze casting method, also referred to as liquid forging, are a kind of manufacturing process between casting and forging, its product Metallographic structure is close to forging tissue, and product mechanical performance has the disadvantage that extrusion casint sets between low pressure casting method and forging method Standby and mould is complex, and low production efficiency, production cost is higher.
Forging method, is generally divided into solid forging method and two kinds of spinning process of forging.Solid forging method is forged using large-tonnage Ingot casting is directly forged equipment the profile of wheel rim and spoke, then the method that machining obtains finished product in type cavity mould;Forging Spinning process is that ingot casting is forged in type cavity mould wheel blanks first with large-tonnage forging equipment, then spin forming wheel again Rim, last machining makes finished product.Compared to low pressure casting method, squeeze casting method, forging method produces aluminum-alloy wheel, typically Need more than nominal pressure thousands of tons of even ten thousand tons of large-tonnage forging equipment, its production procedure length, cost highest, but due to forging Dense structure, wheel strength are high, under the conditions of intensity identical, forge wheel lighter than the weight for casting wheel.Although forging Technical difficulty height, the fund input amount for making method is big, more and more both at home and abroad due to forging the advantage that wheel is lightweight, intensity is high Factory start using forging method (utilizing forging equipment) manufacture aluminum-alloy wheel.
The content of the invention
The purpose of the present invention is to overcome the shortcomings of existing manufacturing technology, there is provided one kind can reduce equipment tonnage, reduce system This rotation excellent suitability for press forming mould and rotation forging and molding method are caused, the production effect of aluminum-alloy wheel etc. can be effectively improved Rate, reduces production cost.
To reach above-mentioned purpose, the rotation excellent suitability for press forming mould of the present invention is configured to, including upper mould and lower mould, by upper mould Downward percussion action and the blank that is pointed on lower mould forged and pressed, the lower mould can be driven by a motor and vertically to rotate Rotate centered on axis, the centrage of the upper mould is arranged obliquely relative to the vertical pivot center of the lower mould.
Rotated centered on vertical pivot center because lower mould can be driven by a motor, carry out the upper of descending punching press action The centrage of mould is arranged obliquely relative to the vertical pivot center of lower mould, thus, it is possible to the rotation using lower mould is carried out to blank Local rotation forging and stamping.Now, upper mould only acts on the sub-fraction of blank surface to the forming pressure of blank, thus can with compared with Little plastic force realizes the shaping of large-size workpiece.Using the present invention, not only can realize on conventional little tonnage hydraulic The forging and molding of large-size workpiece, replaces pressure to be its 20 times conventional forging equipment, and die life length, work noise Little, energy consumption is low, and the manufacturing enterprise for being especially suitable for middle and small scale is produced.
In addition, upper mould is moved up and down carries out percussion action, thus, can be avoided by being driven rotation to lower mould Up and down movable upper mould side structure is excessively complicated, and the action control for shaping is relatively easy to.
Of the invention preferably the upper mould is fixed on model fixing seat, is formed with seam on upper model fixing seat, it is described on Mould is chimeric with the seam, and the bottom surface of the seam is formed as planar bevels inclined relative to above-mentioned vertical pivot center, described The upper surface of upper mould is formed as the plane engaged with the bottom surface.
Thus, by the simple and reliable fixed upper mould in ground of the structure for enabling upper mould chimeric with seam, and using upper mould Upper surface realizes positioning with the engagement of the bottom surface of seam, and the installation accuracy of upper mould is ensured in a simple and efficient manner.
It is of the invention preferably, be formed through the screw thread into concave up seam on the outer peripheral face of model fixing seat on described Through hole, forms fluted on described on the outer peripheral face of mould, and the front end for screwing in the screw of the tapped through hole enters the groove.
So, it is possible to realize the fixation to upper mould using simple structure.
Of the invention preferably the lower mould is fixed on die shoe, and die shoe has the lower mould being fixed on press bed Seat the latter half and the die shoe top half of the fixation lower mould, the die shoe top half can be driven by the motor Move so as to rotate relative to the die shoe the latter half.
Of the invention preferred, the upper mould can freely be rotated centered on the vertical pivot center.
Of the invention preferred, the upper mould is arranged on press top shoe by upper model fixing seat, the upper model fixing seat energy It is enough freely to be rotated centered on the vertical pivot center relative to the press top shoe.
Because motor drives lower mould to rotate, blank can be driven to rotate;The descending compacting blank of upper mould, its rubbing and blank between Wiping power can make mould rotating in same direction.Upper mould is formed as the structure of passive rotation, is prevented from blank and upper model face produces relatively Rub and cause the abrasion of mould and surface of the work.
The rotation excellent suitability for press forming mould of the present invention is particularly suitable as the shaping dies of aluminum-alloy wheel and carrys out forming said alloy Wheel.
The invention further relates to a kind of rotate forging and molding method, the method uses the rotation excellent suitability for press forming of any of the above-described structure Mould carries out excellent suitability for press forming to blank, during the excellent suitability for press forming is carried out, makes mould carry out percussion action, also, by motor The lower mould is driven to rotate centered on vertical pivot center.
Using the method, the effect identical technique effect with description in above-mentioned rotation forge die is obtained in that.
In the rotation forging and molding method, lower mould can rotate by described in the motor Continuous Drive.
Due to being that mould is rotated under Continuous Drive, thus, forming efficiency is high and controls simple.
Description of the drawings
Fig. 1~4 are the shaping that aluminum-alloy wheel shaping is carried out using the rotation excellent suitability for press forming mould on press The schematic diagram in each stage of journey, while being also shown for rotating the structure of excellent suitability for press forming mould in figure;
Fig. 5 is the accompanying drawing for representing upper mould and the mounting structure of upper model fixing seat.
Wherein, 1. press lower table, 2. die shoe the latter half, 3. die shoe top half, 4. descends mould outer body, 5. Lower mould inner bulk, 6. ejector beam, 7a. aluminum alloy blanks, 7b, 7c. forging and stamping semi-finished product, 7d. forging and stamping finished products, 8. go up mould, 9. go up mould Fixed seat, 10. plain thrust bearing, 11. roller bearings, mould base on 12., mould overcoat on 13., 14. press top shoes.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawings.
Fig. 1~Fig. 4 is the shaping that aluminum-alloy wheel shaping is carried out using the rotation excellent suitability for press forming mould on press The schematic diagram in each stage of process, while being also shown for rotating the structure of excellent suitability for press forming mould in figure.Fig. 5 for represent upper mould with it is upper The accompanying drawing of the mounting structure of model fixing seat.The rotation excellent suitability for press forming mould is used to carry out the shaping of aluminum-alloy wheel, the rotation forging Pressing formation mould includes upper die component and lower mold assemblies.
The upper die component includes upper mould 8 and upper model fixing seat 9, wherein, upper mould 8 is installed on model fixing seat 9, is installed Afterwards, the centrage C1 of upper mould 8 (vertical) rotation axiss C2 relative tilt certain angles vertical with upper model fixing seat 9;Upper mould is consolidated The top of reservation 9 is equipped with plain thrust bearing 10, and outside is equipped with double-row conical bearing 11, and by upper mould base 12 and upper mould Overcoat 13 is fixed on press top shoe 14, realizes moving up and down under the driving of press top shoe 14.Plain thrust bearing 10 It is used to make upper model fixing seat 9 realize freely rotating centered on its rotation axis C2 with roller bearing 11.
As Fig. 5 is represented in detail, upper model fixing seat 9 has concave up seam 91, and the bottom surface 91a of seam 91a is formed Be relative to upper model fixing seat 9 rotation axiss C2 incline predetermined angular (after mould 8 is installed, perpendicular to the centrage of upper mould 8 C1 planar bevels).Tapped through hole 92a is formed with the outer peripheral face 92 of upper model fixing seat 9, tapped through hole 92a is through to Seam 91.Tapped through hole 92a is screwed in for screw 99 (referring to Fig. 1).
In addition, the upper surface 81 of upper mould 8 is formed as plane, mould 8 is embedded in the seam 91 of model fixing seat 9 on this When, the upper surface 81 is engaged (play positioning action) with the bottom surface 91a of seam 91 so that the centrage C1 of upper mould 8 is solid with upper mould The rotation axiss C2 of reservation 9 folds predetermined angular.The groove 82a of annular, the groove are formed with the outer peripheral face 82 of upper mould 8 82a is entered for the tip (front end) of above-mentioned screw 99, so as to realize the fixation to upper mould 8.
The lower mold assemblies include lower mould (4,5) and die shoe:Lower mould be split-type structural, including lower mould outer body 4 with Lower mould inner bulk 5, the two is bolted on together, and lower mould outer body 4 is bolted on die shoe (specifically Die shoe top half 3) on;Die shoe is made up of two parts, and its latter half is that die shoe the latter half 2 is fixed on press work Make on platform, its top half is similar with upper die component by one group between die shoe top half 3 and die shoe the latter half 2 Plain thrust bearing and roller bearing it is (all not shown) realize connection, and by motor, reductor and belt it is (all not shown) drive It is dynamic, lower mould can be driven to realize the rotation with its vertical pivot center C3 (with C2 actually straight lines) as axle.
Below the rotation forging and molding method to being carried out forming said alloy wheel using above-mentioned rotation excellent suitability for press forming mould is carried out Explanation.
First, as shown in figure 1, aluminum alloy blank 7a is placed on lower mould (inner bulk 5), under making under the driving of motor Mould is continuously rotated, also, makes to carry out punching press action shown in mould 8 along arrow in figure downwards.Due to the centrage C1 of upper mould 8 It is inclined relative to vertical direction (pressing direction), thus, what upper mould 8 was carried out to aluminum alloy blank 7a is local punching press (forging Pressure).
What Fig. 2 and Fig. 3 was represented is the situation during forging and stamping, and aluminum alloy blank 7a is forged and pressed to forge and press semi-finished product 7b, 7c Shape.When the shape of forging and stamping to the forging and stamping finished product 7d shown in Fig. 4, terminate forging and stamping, upper mould 8 withdraws upwards.Using vertically Direction will forge and press finished product 7d jack-up through the ejector beam 6 of the central part of lower mould (4,5) so as to the demoulding.
Using above-mentioned embodiment, using the upper mould with vertical-rotation-axis relative tilt predetermined angular, continuously aluminum is closed Golden blank carries out local rotation forging and stamping.Because upper mould only acts on the one of Forming Workpiece surface to the forming pressure of aluminum alloy blank Fraction, therefore the shaping that large-size workpiece can be realized with less plastic force.Using present embodiment, not only can be The forging and molding of aluminum-alloy wheel is realized on conventional little tonnage hydraulic, replaces pressure to be its 20 times conventional forging equipment, and And die life length, work noise be little, energy consumption is low, the Factory production reflectal car of middle and small scale is especially suitable for Wheel.
In addition, using above-mentioned embodiment, upper mould 8 is arranged in the inclined seam 91 of upper model fixing seat 9, by seam 91 and fastening screw 99 (jackscrew) realize positioning with fastening.Fastening screw 99 can be single or multiple.Upper mould is consolidated The angle of inclination of the seam 91 (bottom surface 91a) of reservation 9 determine mould 8 install after angle, make connecing for model face and blank Tactile region and lower mold portion die joint define the cross sectional shape of workpiece.The angle is ground into the pivot angle in shape, but this similar to pendulum Unlike technique is ground from pendulum:1. upper mould does not swing, only rotates in this technique;2. this technique can be used on common forging equipment.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
For example, in the above-described embodiment, to manufacture wheel as a example by be illustrated, however, the present invention can also be suitable for In the shaping of the part of other shapes that are centrosymmetric.
In addition, in the above-described embodiment, the groove of annular is formed in the outer peripheral face of upper mould, however, the shape of groove is simultaneously Not limited to this, are not yet may be used for annular.
In addition, in the above-described embodiment, lower mould is made continuously to rotate during excellent suitability for press forming, it may, however, also be Upper mould is completed after the percussion action of stipulated number (1 time or multiple), makes lower mould rotate predetermined angular.

Claims (7)

1. it is a kind of to rotate excellent suitability for press forming mould, including upper mould (8) and lower mould, the para-position by the downward percussion action of upper mould (8) Blank on lower mould is forged and pressed, it is characterised in that
The lower mould can be driven by a motor and be rotated centered on vertical pivot center (C3), the centrage of the upper mould (8) (C1) it is arranged obliquely relative to the vertical pivot center (C3) of the lower mould,
The upper mould (8) can freely be rotated centered on the vertical pivot center,
The upper mould (8) is fixed on model fixing seat (9), and seam (91), the upper mould are formed with upper model fixing seat (9) It is (8) chimeric with the seam (91),
The bottom surface (91a) of the seam (91) is formed as planar bevels inclined relative to above-mentioned vertical pivot center (C3), institute The upper surface (81) for stating mould (8) is formed as the plane engaged with the bottom surface (91a).
It is 2. according to claim 1 to rotate excellent suitability for press forming mould, it is characterised in that
The tapped through hole into concave up seam (91) is formed through on the outer peripheral face (92) of model fixing seat (9) on described (92a), formed fluted (82a) on the outer peripheral face (82) of mould (8) on described, screw in the screw of the tapped through hole (92a) (99) front end enters the groove (82a).
It is 3. according to claim 1 to rotate excellent suitability for press forming mould, it is characterised in that the lower mould is fixed on die shoe, Die shoe has the die shoe first half of die shoe the latter half (2) and the fixation lower mould being fixed on press bed Divide (3), the die shoe top half (3) can be driven so as to relative to the die shoe the latter half (2) by the motor Rotate.
4. the rotation excellent suitability for press forming mould according to any one of claims 1 to 3, it is characterised in that the upper mould (8) is led to Model fixing seat (9) is crossed on press top shoe (14), the upper model fixing seat (9) can be relative to the press top shoe (14) freely rotated centered on the vertical pivot center.
5. the rotation excellent suitability for press forming mould according to any one of claims 1 to 3, it is characterised in that for aluminum-alloy wheel Shaping dies.
It is 6. a kind of to rotate forging and molding method, it is characterised in that
Usage right requires that the rotation excellent suitability for press forming mould any one of 1~5 carries out excellent suitability for press forming to blank,
During the excellent suitability for press forming is carried out, make mould (8) carry out percussion action, also, the lower mould is driven with perpendicular by motor Rotate centered on straight pivot center (C3).
7. rotation forging and molding method according to claim 6, it is characterised in that under by described in the motor Continuous Drive Mould is rotated.
CN201410831959.XA 2014-12-26 2014-12-26 Rotary forge forming die and rotary forge forming method Active CN104550607B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105215238A (en) * 2015-09-17 2016-01-06 苏州新协力特种工业模板有限公司 A kind of wheel pendulum rolles over apparatus for shaping
JP6655937B2 (en) * 2015-10-08 2020-03-04 日立金属株式会社 Method and apparatus for producing forgings by rotary forging
JP2019018222A (en) * 2017-07-14 2019-02-07 株式会社ジェイテクト Manufacturing apparatus of bearing unit and manufacturing method of bearing unit
CN108687494B (en) * 2018-05-08 2021-04-02 青岛北海车轮有限公司 Profiling manufacturing process of rim

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Publication number Priority date Publication date Assignee Title
EP0509610A1 (en) * 1991-04-19 1992-10-21 NORSK HYDRO a.s. Procedure for production of vehicle wheels

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GB2041268B (en) * 1979-02-01 1982-11-17 City University And Worshipful Rotary forging machine
CH662983A5 (en) * 1984-04-21 1987-11-13 Heinrich Schmid Maschinen Und Swash press.
JP2819084B2 (en) * 1994-03-16 1998-10-30 株式会社レイズエンジニアリング Rotary forging device and method for manufacturing automobile wheel using the same
CN2730517Y (en) * 2004-09-30 2005-10-05 胡长安 Axial swing rolling power head
CN101412068A (en) * 2007-10-19 2009-04-22 运通工业股份有限公司 Vertical type forging machine
CN103691864B (en) * 2013-12-31 2015-08-05 赵国英 Double inclined plane rotary forging machine
CN204365940U (en) * 2014-12-26 2015-06-03 北京机电研究所 Rotate excellent suitability for press forming mould

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EP0509610A1 (en) * 1991-04-19 1992-10-21 NORSK HYDRO a.s. Procedure for production of vehicle wheels

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