CN101716632A - Reforming method and mold of automobile rear axle driven gear forging piece - Google Patents
Reforming method and mold of automobile rear axle driven gear forging piece Download PDFInfo
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- CN101716632A CN101716632A CN200910273260A CN200910273260A CN101716632A CN 101716632 A CN101716632 A CN 101716632A CN 200910273260 A CN200910273260 A CN 200910273260A CN 200910273260 A CN200910273260 A CN 200910273260A CN 101716632 A CN101716632 A CN 101716632A
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Abstract
The invention relates to a reforming method and a mold of an automobile rear axle driven gear forging piece; the method comprises the following steps: prepare a semi-finished product-a chambering piece of the driven gear forging piece, place the manufactured chambering piece into a reforming mold cavity and reform the driven gear forging piece; the mold comprises a male mold, a female mold and a stripper plate, wherein the female mold is composed of a floating mold and a closed cavity formed by a pair of rollers; the invention can effectively reform the chambering piece of the driven gear, eliminate the disadvantages of concave pit, oval shape and distortion of the surface of the chambering piece, adopt equipment with low load and simple structure can effectively reform the driven gear forging piece of the automobile rear axle and saves more than 10 percent of raw material; for instance, the driven gear forging piece with 430mm of outer diameter is reformed, the needed load is 6300kN and the blanking weight is 36 kilograms.
Description
Technical field
The present invention relates to a kind of method and mould that can carry out shaping, can eliminate surface crater, and can effectively improve the circularity and the flatness of blank by the blank after the staving press reaming to the automobile rear axle driven gear blank after the reaming.
Background technology
Automobile rear axle driven gear is one of vital part of automobile axle main speed reduction box transferring power, sees Fig. 1, and its forging is an annular forging piece.At present, main production process is: jumping-up → punching → punching the wad → pressing → reaming, and the defective that the forging after the reaming exists has: have pit on (1) end face; (2) ovality big (〉=1mm); (3) torsional deformation.Therefore, the monolateral allowance of forging design is 2.5～4mm, and material consumption is bigger.
In order to improve stock utilization, the method for taking at present has: utilize forcing press that it is carried out shaping after (1) reaming; (2) utilize rotary forging press to carry out shaping.The 1st kind of method shaping equipment needed thereby tonnage big (forcing press more than 2000 tons), the equipment manufacturing cost height, and, can not effectively eliminate the forging ovality; The 2nd kind of method is shaped as the distortion of metal localized accumulated, the equipment needed thereby tonnage be the 1st kind 1/5～1/15, can eliminate the defective that blank exists after the reaming effectively, still, pendulum rolling power is eccentric load, requirement equipment can bear eccentric load, and device structure is required height, equipment manufacturing cost height, and, it is hot shaping (the blank temperature is more than 900 ℃) that pendulum is rolled over shaping, and it is lower to swing the spherical chain life-span, and the m of e expense is higher.
Summary of the invention
Technical problem to be solved by this invention is: in order to solve problems of the prior art, automobile rear axle driven gear forging piece shaping methods and mould after a kind of symmetric double rolling system shaping reaming are provided, this method can be eliminated the defective that blank exists effectively, and the equipment needed thereby load is little; This mould structure is simple, makes easily.
The present invention solves its technical problem and adopts following technical scheme:
Automobile rear axle driven gear forging piece shaping methods provided by the invention is to adopt the method that may further comprise the steps:
(1) semi-finished product of preparation driven gear forging piece:
Expand part through jumping-up, punching, punching the wad, pressing and the manufacturing of chambering process process, made reaming part is the semi-finished product of driven gear forging piece, the external taper of this reaming part is constant, the inner cone tapering is 0, outside diameter reduces 4mm on the basis of driven gear forging piece, interior circular diameter increases 1mm on the basis of driven gear forging piece, under the principle that keeps volume to equate, calculate height dimension;
(2) the reaming part of manufacturing is put into the shaping mould die cavity, the punch excircle dimension in this mould is identical with the interior round size and shape of shape and driven gear forging piece, utilizes the punch location of mould, and the inner hole sleeve that is about to the reaming part is on the cylindrical of punch;
(3) shaping of driven gear forging piece: the die of shaping mould is made up of unsteady mould and the formed near closed hollow ring of a pair roller, and around 1 rotation of spindle axis line, this is revolution to a pair roller under the drive of main shaft; Under by the effect of the friction of shaping piece and unsteady mould, roll is again around the rotation of roll axial line, not only revolved round the sun but rotation when metal is rolled distortion and unsteady mould form near closed hollow ring, along with slide block moves up, the attenuation of reaming part is full of float mould inner ring and punch outer ring, finishes the shaping to the reaming part.
Through above-mentioned steps, finish the one-tenth shaping of automobile rear axle driven gear forging piece.
The shaping mould of realization said method provided by the invention comprises die, punch and discharging circle.
The structure of die is: be made up of the roll that float mould and a pair of left-right symmetry distribute.
Two rolls are symmetry axis with the spindle axis line, roll axial line and spindle axis line 1 plane that coexists, and the angle between two roll axial lines is 90 °; The cone-apex angle of each roll is 90 °, and the top is processed with punch six side's platforms, and both as guaranteeing the roll axial line usefulness concentric with the roll mandrel axial line, conduct prevented to produce relative rotation between roll mandrel and the roll this six sides platform again.
Unsteady mould bottom is equipped with the butterfly spring, the elastic force excursion is 0 to 300kN, this elastic force guarantees unsteady mould and roll formation near closed hollow ring in the process of shaping, the geometry and the consistent size of last plane, back cone and the outside cylinder of this cavity shape and size and driven pulley forging, on the mould that floats, be processed with the mould six side's platforms that float, this six sides platform had both guaranteed to float mould to the center, and the mould that prevents from again to float is with roll rotation.
The structure of punch is: toroidal and consistent size in its first half shape and size and the driven pulley forging, mid portion is one cylindrical, and its diameter is a driven pulley forging endoporus maximum gauge, and the bottom is divided into punch six side's platforms, this six sides platform guarantees punch to the center, prevents that also punch from rotating.
Between punch and unsteady mould, the discharging circle is installed.
The discharging coil structures: be an annular element, inner ring is circular, and its size and punch cylinder diameter size match, and assurance can be slided along cylinder; The outer ring is made up of three parts, upper surface shape and size and driven pulley forging lower surface shape and consistent size, mid portion is one cylindrical, diameter is the driven pulley forging, and match with unsteady mould inner ring diameter, assurance can slide up and down in unsteady mould inner ring, and the bottom is a unsteady mould hexagon platform, and this six sides platform height ratio liftout height exceeds 5 to 10mm.
The present invention compared with prior art has following main advantage:
One. this method is utilized rolling accumulated deformation method of localized axial and mould, and the reaming part is carried out axially rolled shaping, therefore, can eliminate the defective that the reaming part exists effectively.
They are two years old. owing to can eliminate the defective that the reaming part exists effectively, therefore, can carry out shaping to automobile rear axle driven gear forging piece effectively.
They are three years old. and in the defective process of eliminating the forging existence, owing to be the localized accumulated distortion, therefore, the devices needed load is little.And, do not have eccentric load, so devices needed is simple in structure, and does not have spherical chain, long service life because roll-force is symmetrically distributed.
They are four years old. and its punch of the mould that is provided is fixed on the slide block, die is made up of the rotating awl roll and the elastic floating mould of a pair of symmetry, the awl roll is rotating around oneself axle when symmetry axis rotates, realization to by the axially rolled accumulated deformation of shaping piece the time and unsteady mould form near closed hollow ring, because be rolling accumulated deformation, so required deformation force is little, die life is long, in the operation of rolling, the mould that floats forms near closed hollow ring with the awl roll, therefore, does not produce overlap, do not need the operation of cutting edge, and save material.
In a word, the present invention can eliminate the defective that forging spare exists effectively, can adopt equipment simple in structure that automobile rear axle driven gear forging piece is carried out shaping effectively, can save material effectively, save material more than 10%, for example, the shaping external diameter is about the 430mm driven gear forging piece, the allowance of former forging design is monolateral 3 to 4mm, cutting stock weight is 41 kilograms, the allowance of forging is 1 to 2mm after the shaping of the present invention and utilize, and cutting stock weight is 36 kilograms, and utilizes load required for the present invention to be 6300kN.
Description of drawings
Fig. 1 is the total figure profilograph of mould of the present invention.
Fig. 2 is a forging profilograph of the present invention
Fig. 3 is a reaming part profilograph of the present invention.
Fig. 4 is that mould of the present invention begins the shaping profilograph.
Fig. 5 is that mould of the present invention is finished the shaping profilograph.
Fig. 6 is a roll structural map of the present invention.
Fig. 7 is the vertical view of Fig. 6.
Fig. 8 is the B-B cutaway view of Fig. 9.
Fig. 9 is the unsteady mould structural map of the present invention.
Figure 10 is discharging ring structure figure of the present invention.
Figure 11 is the vertical view of Figure 10.
Figure 12 is that the A of Figure 10 is to view.
Figure 13 is a punch structural map of the present invention.
Figure 14 is that the A of Figure 13 is to view.
Figure 15 is a fixed head structural map of the present invention.
Figure 16 is that the A of Figure 15 is to view.
Among the figure: 1. spindle axis line; 2. main shaft; 3. roll mandrel; 4. roll axial line; 5. pull bar; 6. bearing block; 7. stiffener; 8. roll; 9. first compacting ring; 10. first soket head cap screw; 11. second soket head cap screw; 12. first fastening bolt; 13. punch; The mould 14. float; 15. discharging circle; 16. second fastening bolt; 17. second compacting ring; 18. fixed head; 19. butterfly spring; 20. die holder; 21. ejector beam; 22. die pad; 23. key; 24. binding thread external member; 25. slide block; 26. eject oil cylinder; 27. master cylinder; 28. reaming part; 29. driven pulley forging; 30. roll six side's platforms; Mould six side's platforms 31. float; 32. punch six side's platforms; 33. big six side's pits; 34. six side's gathering sills; 35. little six sides hole.
The specific embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
One. the shaping methods of automobile rear axle driven gear forging piece
This shaping methods adopts the method that may further comprise the steps:
(1) semi-finished product of preparation driven gear forging piece:
Make the reaming part through jumping-up → punching → punching the wad → pressing → chambering process process, made reaming part shape is similar to driven gear forging piece (as shown in Figure 3) shape, made reaming part (as shown in Figure 2) external taper (A1, A2) is constant substantially, inner cone A3 becomes 0, outside diameter reduces 4mm on the basis of driven gear forging piece, interior circular diameter increases 1mm on the basis of driven gear forging piece, under the principle that keeps volume to equate, calculate height dimension and change h, increase the height of reaming part by method shown in Figure 3.
(2) the reaming part (as shown in Figure 3) of manufacturing is put into mould of the present invention (Fig. 1), punch 13 excircle dimensions in the mould are identical with the interior round size and shape of shape and driven pulley forging, utilize punch 13 location of mould, be about to the reaming part at inner hole sleeve on the cylindrical of punch 13, as shown in Figure 4.
(3) as shown in Figure 4, die is made up of unsteady mould 14 and a pair roller 8 formed near closed hollow rings, a pair roller 8 rotates around spindle axis line 1 under the drive of main shaft 2, i.e. revolution (Fig. 1), under the effect of the friction of reaming part and unsteady mould, roll 8 is again around the rotation of roll axial line, not only revolved round the sun but rotation when metal is rolled distortion and unsteady mould 14 form near closed hollow rings, along with slide block moves up, the attenuation of reaming part is full of float mould endoporus and punch outer ring, finish shaping, as shown in Figure 5 to the reaming part.
Through above-mentioned steps, finish the shaping of automobile rear axle driven gear forging piece.
Two. the shaping mould of automobile rear axle driven gear forging piece
The structure of this shaping mould is as shown in Figure 1: comprise die, punch and discharging circle.
The structure of die: die is made up of unsteady mould 14 and a pair roller 8.
Shown in Fig. 6,7: roll 8 cone-apex angles are 90 °, and roll 8 tops are processed with roll six side's platforms 30, and both as the usefulness that guarantees that roll axial line and roll mandrel axial line 4 are concentric, conduct prevented to produce relative rotation between roll mandrel 3 and the roll 8 this six sides platform again.As shown in Figure 4: 2 rolls 8 are symmetry axis with spindle axis line 1, roll axial line 4 and spindle axis line 11 plane that coexists, and the angle between 2 roll axial lines 4 is 90 °.
Two rolls 8 (left-right symmetry) are fixed on the roll mandrel 3 by first compacting ring 9, pull bar 5, first soket head cap screw 10, second soket head cap screw 11, stiffener 7.Process the high six side's boss of h1 that be in the upper end of roll 8, claim roll six side's platforms 30, this six sides edge of table opposite side distance is from be L1, and this six sides platform attaches together in six side's pits in the stiffener, do not relatively rotate and relative slip with between assurance roll 8 and the roll mandrel 3; Utilize second fastening bolt 16, second compacting ring 17 mould 14 that will float to be contained on the fixed head 18.
Punch 13 (shown in Figure 13,14) is high down to be in positive six side's pits of h5 for six side's boss of h4 (edge-to-edge's distance is L4) are loaded on the dark of fixed head, h4 than h5 big 3 to 5mm, utilize first fastening bolt 12 that punch 13 is fixed on the fixed head 18, punch die cavity diameter d 1, d2, d4 equidimension equate with the driven pulley forging ' s block dimension; Utilize second fastening bolt 16, second compacting ring 17 that fixed head 18 is fixed on the die holder 20.
Be manufactured with 6 spring bases on the fixed head 18 (Figure 15, Figure 16), and (six sides are h5 deeply to be manufactured with little six side's pits 35, edge-to-edge's distance is L4), to guarantee 13 pairs of centers of punch, and prevent that punch from rotating, also be manufactured with six side's gathering sills 34, its height is h6 (than h3 little 2 to 3mm), edge-to-edge's distance L 3 is determined according to the driven gear forging piece maximum outside diameter, be generally less than 10～20mm of driven gear forging piece maximum outside diameter, the effect of six side's gathering sills 34 is that the mould that guarantee to float slides therein and prevents its rotation.Also be manufactured with on the fixed head 18 deeply and be big six side's pits 33 of h7, the edge-to-edge of big six side's pits is of a size of L2, and its effect is that the mould that guarantees to float slides up and down therein, and prevents that die from rotating; Utilize binding thread external member 24 die holder 20 to be fixed on the slide block 25 of awl roller rivet bucker, the key 23 of 4 symmetrical distributions is installed between die holder and slide block 25, this key is used for preventing that die holder from rotating relative to slide block.
Structure such as Fig. 8, shown in Figure 9 of unsteady mould 14: be processed with the mould six side's platforms 31 that float on unsteady mould 14, this six sides platform had both guaranteed to float mould to the center, and the mould that prevents from again to float is with roll rotation.Unsteady mould 14 bottoms are equipped with butterfly spring 19 (as shown in Figure 1), the elastic force excursion is 0 to 300kN, this elastic force guarantees unsteady mould and roll formation near closed hollow ring in the process of shaping, and this cavity shape and size and driven pulley forging (as shown in Figure 2) are gone up plane (between D2 and the d4), back cone (cone angle A1), outside cylinder (diameter D1, high H3) shape and consistent size.
The structure of punch 13 such as Figure 13, shown in Figure 14: toroidal and consistent size in its first half shape and size and the driven pulley forging, mid portion is one cylindrical, its diameter is a forging endoporus maximum diameter d 1, the bottom is divided into punch six side's platforms 32, these punch six side's platforms can guarantee punch to the center, prevent that also punch from rotating.
The structure of discharging circle 15 such as Figure 10 are to shown in Figure 12: the structure of discharging circle is an annular element, and inner ring is circular, and its size and punch cylinder diameter size match, and assurance can be slided along cylinder; The outer ring is made up of three parts, upper surface shape and size and driven pulley forging lower surface shape and consistent size, mid portion is one cylindrical, diameter is the driven pulley forging, and match with unsteady mould inner ring diameter, assurance can slide up and down in unsteady mould inner ring, and the bottom is one or six side's platform shapes, and this step height ratio liftout height exceeds 5 to 10mm.
There are not the parts of narration to be described below in conjunction with accompanying drawing to other with relevant parts.
As shown in Figure 1: two rolls 8 are supported by bearing block 6, and under the drive of the main shaft 2 of boring the roller rivet bucker, rotate around spindle axis line 1, be illustrated in figure 3 as the reaming part 28 for the treatment of shaping, the reaming part 28 for the treatment of shaping is put in the mould shown in Figure 1, under the effect that ejects the master cylinder 27 in the oil cylinder 26 of awl roller rivet bucker, slide block 25 moves up, drive die holder 20, fixed head 18, punch 13, discharging circle 15 and treat that the reaming part 28 of shaping moves upward, when reaming part 28 upper surfaces for the treatment of shaping touch roll 8 (position shown in Figure 4), under the effect of frictional force, roll 8 and roll mandrel 3 begin around 4 rotations of roll axial line, at roll not only around main axis rotation but also around the rolling deformation of under the synergy of axle rotation, realizing reaming part 28 upper surfaces and the side conical surface, in the process of rolling deformation, under the effect of dish spring 19 elastic forces, mould 14 upper surfaces that float contact all the time with roll 8, form near closed hollow ring, be concave die cavity, force reaming part 28 metal in deformation process near closed hollow ring, to flow.When the slide block 25 of master cylinder drives punch 13 and discharging circle 15 and continues to move upward, roll 8 and the mould 14 of floating do not move at vertical direction, under the effect of the punch of the mould 14 that floats, die that roll is formed and relative motion, discharging circle 15, make metal crimp, be full of the die of the mould 14 that floats, roll composition and the punch of relative motion, the die cavity that the discharging circle forms.When being reached desired uniform thickness during as shown in Figure 5 state by the reaming part 28 of shaping, slide block 25 is descending fast, when reaching the limit inferior position, die pad 22 moves upward, by 3 uniform ejector beams 21 jack-up discharging circle 15 upwards, the discharging circle ejects driven pulley forging 29, and ejection height is greater than the H1 among Fig. 1.
Claims (10)
1. the shaping mould of an automobile rear axle driven gear forging piece comprises die and punch, it is characterized in that:
The structure of die is: forms by the roll (8) that float mould (14) and a pair of left-right symmetry distribute,
Two rolls are symmetry axis with spindle axis line (1), roll axial line (4) and spindle axis line (2) 1 plane that coexists, and the angle between two roll axial lines is 90 °; The cone-apex angle of each roll is 90 °, and the top is processed with punch six side's platforms (32), and both as guaranteeing roll axial line and the concentric usefulness of roll mandrel axial line (4), conduct prevented to produce relative rotation between roll mandrel (3) and the roll (8) this six sides platform again,
Unsteady mould (14) bottom is equipped with butterfly spring (18), the elastic force excursion is 0 to 300kN, this elastic force guarantees unsteady mould and roll formation near closed hollow ring in the process of shaping, the geometry and the consistent size of last plane, back cone and the outside cylinder of this cavity shape and size and driven pulley forging, on the mould that floats, be processed with the mould six side's platforms (31) that float, this six sides platform had both guaranteed to float mould to the center, and the mould that prevents from again to float is with roll rotation;
The structure of punch (13) is: toroidal and consistent size in its first half shape and size and the driven pulley forging, mid portion is one cylindrical, and its diameter is a forging endoporus maximum diameter d 1, and the bottom is divided into punch six side's platforms (32), this six sides platform guarantees punch to the center, prevents that also punch from rotating;
Between punch (13) and unsteady mould (14), discharging circle (15) is installed;
Discharging circle (15) structure: be an annular element, inner ring is circular, and its size and punch cylinder diameter size match, and assurance can be slided along cylinder; The outer ring is made up of three parts, upper surface shape and size and driven pulley forging lower surface shape and consistent size, mid portion is one cylindrical, diameter is the driven pulley forging, and match with unsteady mould inner ring diameter, assurance can slide up and down in unsteady mould inner ring, and the bottom is a unsteady mould hexagon platform (31), and this six sides platform height ratio liftout height exceeds 5 to 10mm.
2. the shaping mould of automobile rear axle driven gear forging piece according to claim 1, it is characterized in that: two rolls (8) are fixed on the roll mandrel (3) by first compacting ring (9), pull bar (5), first soket head cap screw (10), second soket head cap screw (11), stiffener (7), and roll mandrel is by bearing block (6) movable supporting.
3. the shaping mould of automobile rear axle driven gear forging piece according to claim 2, it is characterized in that: on stiffener (7), be provided with six side's pits, be processed with roll six sides protruding (30) in the upper end of roll (8), this six sides boss cooperates with positive six side's pits of stiffener (7) and links to each other.
4. the shaping mould of automobile rear axle driven gear forging piece according to claim 1, it is characterized in that: die holder (20) is fixed on the slide block (25) with binding thread external member (24), the key (23) of four symmetrical distributions is installed between die holder and slide block (25), and this key is used for preventing that die holder from rotating relative to slide block.
5. the shaping mould of automobile rear axle driven gear forging piece according to claim 4, it is characterized in that: fixed head (18) and the unsteady mould (14) that is attached thereto are fitted on the die holder (20) with second fastening bolt (16) and second compacting ring (17).
6. the shaping mould of automobile rear axle driven gear forging piece according to claim 5 is characterized in that: be manufactured with the butterfly spring abutment that is used to install butterfly spring (19) on fixed head (18).
7. the shaping mould of automobile rear axle driven gear forging piece according to claim 5, it is characterized in that: on fixed head (18), be manufactured with six side's gathering sills (34), it is tall and big in liftout height 5～10mm, and its edge-to-edge's distance is less than 10～20mm of driven gear forging piece (29) maximum outside diameter of shaping.
8. the shaping mould of automobile rear axle driven gear forging piece according to claim 5, it is characterized in that: in fixed head (16), be manufactured with big six side's pits (33) and little six side's pits (35), the mould six side's platforms (31) that float are made in unsteady mould (14) bottom, this six sides platform is packed in big six side's pits (33), punch six side's platforms (32) of punch (13) bottom are packed in little six side's pits (35) of fixed head (16), the mould that floats slides up and down in the guiding of big six side's pits (33) of fixed head (16), and the mould (14) that prevents to float rotates.
9. the shaping mould of automobile rear axle driven gear forging piece according to claim 1, it is characterized in that: roll (8) rolling surface is the planar end surface and the back cone of driven gear forging piece.
10. the shaping methods of an automobile rear axle driven gear forging piece is characterized in that adopting that the described shaping mould of arbitrary claim carries out shaping to automobile rear axle driven gear forging piece in the claim 1 to 9, and its step comprises:
(1) semi-finished product of preparation driven gear forging piece:
Expand part (28) through jumping-up, punching, punching the wad, pressing and the manufacturing of chambering process process, made reaming part is the semi-finished product of driven gear forging piece, the external taper of this reaming part is constant, the inner cone tapering is 0, outside diameter reduces 4mm on the basis of driven gear forging piece, interior circular diameter increases 1mm on the basis of driven gear forging piece, under the principle that keeps volume to equate, calculate height dimension;
(2) the reaming part of manufacturing is put into the shaping mould die cavity, punch in this mould (13) excircle dimension is identical with the interior round size and shape of shape and driven gear forging piece, utilize punch (13) location of mould, the inner hole sleeve that is about to the reaming part is on the cylindrical of punch (13);
(3) shaping of driven gear forging piece: the die of shaping mould is made up of unsteady mould (14) and the formed near closed hollow ring of a pair roller (8), a pair roller (8) rotates around spindle axis line (1) under the drive of main shaft (2), this is revolution, under by the effect of the friction of shaping piece and unsteady mould, roll (8) is again around the rotation of roll axial line, not only revolved round the sun but rotation when metal is rolled distortion and unsteady mould (14) form near closed hollow ring, along with slide block moves up, the attenuation of reaming part is full of float mould inner ring and punch outer ring, finishes the shaping to the reaming part;
Through above-mentioned steps, finish the one-tenth shaping of automobile rear axle driven gear forging piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102732605A CN101716632B (en) | 2009-12-15 | 2009-12-15 | Reforming method and mold of automobile rear axle driven gear forging piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102732605A CN101716632B (en) | 2009-12-15 | 2009-12-15 | Reforming method and mold of automobile rear axle driven gear forging piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101716632A true CN101716632A (en) | 2010-06-02 |
| CN101716632B CN101716632B (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102732605A Expired - Fee Related CN101716632B (en) | 2009-12-15 | 2009-12-15 | Reforming method and mold of automobile rear axle driven gear forging piece |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126136A (en) * | 2011-01-04 | 2011-07-20 | 武汉理工大学 | Automotive rear axle driven bevel gear blank forging production line |
| CN103111561A (en) * | 2013-02-06 | 2013-05-22 | 武汉理工大学 | Internal deep groove annular piece precision rolling forming method and device |
| CN103170908A (en) * | 2013-03-22 | 2013-06-26 | 中色奥博特铜铝业有限公司 | Novel roller polishing and fixing device of three-roller planetary rolling mill |
-
2009
- 2009-12-15 CN CN2009102732605A patent/CN101716632B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126136A (en) * | 2011-01-04 | 2011-07-20 | 武汉理工大学 | Automotive rear axle driven bevel gear blank forging production line |
| CN103111561A (en) * | 2013-02-06 | 2013-05-22 | 武汉理工大学 | Internal deep groove annular piece precision rolling forming method and device |
| CN103111561B (en) * | 2013-02-06 | 2016-03-30 | 武汉理工大学 | A kind of precision rolling manufacturing process of interior deep groove annular piece and device |
| CN103170908A (en) * | 2013-03-22 | 2013-06-26 | 中色奥博特铜铝业有限公司 | Novel roller polishing and fixing device of three-roller planetary rolling mill |
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| Publication number | Publication date |
|---|---|
| CN101716632B (en) | 2011-06-29 |
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