CN104582874A - Forming method and a tooth component produced in accordance with said forming method - Google Patents
Forming method and a tooth component produced in accordance with said forming method Download PDFInfo
- Publication number
- CN104582874A CN104582874A CN201380045078.9A CN201380045078A CN104582874A CN 104582874 A CN104582874 A CN 104582874A CN 201380045078 A CN201380045078 A CN 201380045078A CN 104582874 A CN104582874 A CN 104582874A
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- forming
- aforementioned
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- face
- shaping
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
- B21J9/025—Special design or construction with rolling or wobbling dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/30—Making machine elements wheels; discs with gear-teeth
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention relates to a forming method, wherein a workpiece (2) is formed by means of a forming tool (1) in a wobble process or rotary forging process at low temperatures, for example in the range of lukewarm forming or medium-temperature forming. Because the forming force (F) is not transferred to the entire forming surface at the same time, but acts successively on a sub-surface (7) that changes incrementally or continuously until the entire forming surface is loaded with the forming force (F) at least once, surprisingly high degrees of deformation can be realized using comparably low force application.
Description
Technical field
The present invention relates to a kind of forming method, workpiece comes shaping by means of shaping jig under room temperature or certain temperature wherein.In addition, the present invention relates to a kind of profiled member utilizing this forming method to manufacture.
Background technology
File DE 10 2,005 027 259 A1 describes the forging method that a kind of half thermoforming for the blank by being made up of the alloy organized with superplasticity manufactures hardware.Thus, the briquetting pressure in shaping jig be kept to be starkly lower than respective alloy for the briquetting pressure needed for forging.
File DE 10 2,007 023 087 A1 relates to a kind of method for the manufacture of the cam be made up of hardenable steel for the camshaft in the internal combustion engine of motor vehicle.This manufacture method comprises the heat treatment then for generation of the half-finished shaping of cam blank and cam blank.In order to make to be easy to shaping, bar material or cam disc can be heated to according to material if desired before shaping until 400 ° of C-500 ° of C temperature on, make this shaping as half thermoforming realize.Such temperature raises and certainly improves deformability.Temperature is selected by this way, realizes and does not occur scaling when namely this is molded over inorganization damage.
By file WO 2005/021177 A1 known a kind of for profiled sheeting in shaping jig, be particularly useful for half thermoforming of slab or the method for thermoforming.At this, by apply half thermoforming or thermoforming cause such as higher relative to cold forming (as deep-draw) degree of deformation (Umformgrad) be proved to be favourable.Especially used stamping tool can be protected thus.
File DE 10 2,009 025 023 A1 relates to a kind of method for the manufacture of camshaft, uses half drop stamping wherein.
Than using lower temperature in thermoforming in half thermoforming, usually do not realize material hardening thus.But, such as can use the high-strength material with high-strength characteristic.Only need to realize temperature to be in this case elevated in the scope making to be easy to shaping, especially in the temperature under 850 ° of C, preferably between 500 ° of C and 700 ° C.
Be suitable in principle, higher degree of deformation requires higher forming temperature.The situation of the thermoforming in the temperature range thus such as between 1000 ° of C and 1200 ° C is issued to the high forming ability of φ >4.But, be associated therewith be when by workpiece heat to higher temperature high energy.Another the remarkable shortcoming be associated with thermoforming expends for cutting reprocess higher, especially owing to needing to remove the oxide skin (such as by means of injection) produced at relatively high temperatures.In addition material unaccounted-for (MUF) turns out to be disadvantageous, because must arrange huge allowance in order to the deviation that balances appearance and inexactness.In practice, get rid of in addition due to oxide scale layer and multiple method step is integrated in an instrument, because the oxide skin of interference can affect function.
Shaping advantage in the scope of at a lower temperature, such as and cold forming shaping in low-grade fever is relatively less energy ezpenditure for heating and is while non-scale attainable degree of precision thus.But shaping relative at relatively high temperatures, obviously lower forming ability is obtained when higher forming force.
By a kind of known method for being manufactured tooth bar by cold forming of file DE 32 02 254 C2, the blank of column is shaping between patrix and counterdie wherein.Oscillating motion (Taumelbewegung) implemented by molding during punching course on blank.Realize less normal stress by the forming area of local compared with upsetting, it causes the raising of tool life.
According in a kind of method for the manufacture of the blank for tooth bar of file DE 198 39 428 A1, in a first step the original material of the cross section with circular is inserted between mould when using the die casting equipment with at least three moulds that can move relative to each other.In second step, then apply force on the direction that mould moves relative to each other at least one in mould.Make original material be molded into blank for tooth bar thus, it obtains the shape being different from cylinder in the axial region of tooth bar engagement.By power being introduced in these three moulds that can move relative to each other, can make to experience in the region of moderate finite deformation in the further process in tooth bar manufacture of original material at blank to be shaped when the flow harden that nothing is larger.The additional advantage of the method is, can realize blank shapes in a straightforward manner, utilize it in forming process subsequently, especially in swinging method, avoids burr formation.
Summary of the invention
Within this context, the object of the invention is in optimal manner by the advantage of forming method at relatively high temperatures and shaping advantages at a lower temperature.Especially higher degree of deformation should be realized at relatively low temperatures.A kind of teeth portion component (Verzahnungsbauteil) manufactured according to this forming method should be provided in addition.
First the object mentioned utilizes a kind of forming method of feature according to claim 1 to realize.Dependent claims relates to improvement project suitable especially of the present invention.
According to the present invention, namely a kind of forming method is set, the forming force transmitted by shaping jig wherein is only applied on the less sub-face (Teilflaeche) in the part face of the forming surface to be formed as workpiece between shaping period, wherein, sub-face is changed especially constantly between forming force action period of constant, thus whole face is loaded with forming force after a circulation terminates.At this, the present invention is based on this surprising understanding, if namely forming force be not be passed in whole forming surface simultaneously but serial action to progressively or on the sub-face continuing change until whole forming surface is loaded at least one times by with forming force, can lower temperature (its be in the scope of cold forming or be only slightly higher than this and therefore far below the temperature of half thermoforming) under obtain the forming ability obviously improved.Namely especially by forming force partly or increase be delivered on sub-face, wherein, selected sub-face is especially changed continuously after predetermined circulation about forming surface.
Corresponding to a particularly advantageous design of the method, the shockingly high forming ability of φ >4 can be reached, this forming ability corresponding to thermoforming and at this even significantly more than the forming ability of half thermoforming in the temperature range that low-grade fever is shaping.Although be not yet entirely understood based on the physical effect of this outstanding forming ability, at present based on this, namely the power realizing due to variable sub-face the fluctuation be associated with shearing force is introduced, and it introduces relative to the pure axial power common according to prior art the distortion moment that reaction reduces.As a result, the advantage of thermoforming and cold forming is combined by the forming method at the temperature shaping in low-grade fever according to the present invention.Reduce relative to thermoforming otherwise the energy ezpenditure of heating necessity for workpiece.In addition the complexity eliminating oxide skin is removed, and wherein, reaches higher precision simultaneously.Therefore need less allowance, it causes the cutting significantly reduced repair and cause material to be saved simultaneously.The same forming ability for the energy ezpenditure that heats and the raising under less forming force obviously reduced is obtained relative to half thermoforming.Can reduce in addition and expend for purchasing of shaping device.Make tool wear minimum in addition.But while forming force reduces, also obtain the remarkable advantage in view of illustrated high forming ability relative to cold forming.Such as known forming method and swaging method of waving itself is applicable to that this is shaping.At this, this forming method preferably can when performing without when intermediate annealing.In addition, the action direction of forming force not only can have the orientation of level but also can have vertical orientation.
This forming method advantageously can be applicable in the temperature range between 50 ° of C and 450 ° C.The one particularly advantageous design of the method also realizes thus, and temperature is kept constant on namely workpiece is heated between 100 ° of C to 300 ° of C, especially between 150 ° of C to 250 ° of C temperature and between shaping period.This temperature range expends the best of aspect according to the reprocessing that current understanding is formed in forming ability and necessity.
Can consider that first forming force is interrupted or reduces after being applied on the first sub-face, be different from the second sub-face in the first sub-face to be then applied to.On the other hand, if forming force is kept constant in cycle period, turns out to be and meet practice especially.Thus, the friction owing to being caused by shaping jig (it is moved and the sub-face of the lasting change of loading thus along surface of the work) realizes the improvement of the great-jump-forward of the expectation of forming ability.Reduce control to expend, itself otherwise expending for relative positioning again of needing when instrument is separated to the corresponding sub-face of workpiece to add simultaneously.
Can perform from original state to predetermined setting geometry in unique circulation or multiple complete cycle period thus shaping.Therefore significantly shorten manufacture to expend.Ensure forming force consistent in every height face in a straightforward manner simultaneously.
Certainly, forming force also can be changed in cycle period, to realize different degree of deformations thus in different sub-faces.In addition, shaping jig also can be provided as and make adjustable different position and therefore the sub-face of different size can be loaded, so that pressure is improved in local thus.And if the sub-face loaded by forming force respectively roughly waits the earth determined in cycle period, be suitable for especially.Ensure that constant power is introduced with therefore shaping uniformly thus.Make surfacing simultaneously and guarantee high-dimensional stability.
By making shaping jig have adjustable acting surface or removably be arranged in place of tool accommodation portion, the large I in sub-face is easily predetermined.
This shaping jig can temporarily be maintained in unique sub-face during transfer molding power, thus relative position is changed stepwise.Be hopeful to turn out to be successful especially according to another design of forming method of the present invention, the change in sub-face wherein realizes constantly, thus is namely parallel to the surperficial relative motion performed continuously between shaping jig and the surface of workpiece.Realize shaping uniformly in like fashion, it causes the further improvement of quality of materials.
Forming method according to the present invention is not limited to the workpiece geometries determined.If but face to be formed is point symmetry or roughly Rotational Symmetry, turn out to be and to have met practice especially, wherein, the sub-face that shaping jig acts on during transfer molding power is no more than the size of the portion's section (Sektor) with the area fraction reduced relative to face to be formed.
Such as be adapted at wherein using the workpiece of the blank be made up of steel of column especially at least piecemeal.At this, workpiece can be fixed regularly or is moved relative to shaping jig in position between shaping period.At this, by the sub-planar orientation making the acting surface of shaping jig be not parallel to workpiece, the inclination that the part power of forming force is introduced primarily of shaping jig produces.
When performing this forming method, shaping jig can utilize unique instrumental purpose on the sub-face of workpiece, its being placed in punch die (Gesenk) via its whole outer surface back to type above the bearing-surface of instrument and being fixed thus at it.One variant has turned out to be particularly advantageous, wherein shaping jig with on the first instrumental purpose to the sub-face of the first forming surface of workpiece with the second instrumental purpose on especially unified with the sub-face of the first forming surface sub-face of the second forming surface of workpiece.Realize dual locally-shaped thus, make two instruments relative to workpiece tipping wherein.Thus, not only less friction is realized at patrix place but also at counterdie place.In addition, higher degree of deformation can be realized in two outer surface of workpiece, such as can manufacture roller gear best thus.Thus, the method be such as also applicable to less tooth module roller gear or be applicable to high teeth portion, it also can be manufactured by shaping thus first at the temperature lower than scaling boundary.
At this, can be moved synchronously with one another according to these two instruments of another favourable design, especially namely performed unified rotary motion.
Preferably, these two instruments have tool axis respectively, and itself and the axis of workpiece are enclosed in the such as also consistent angle between 0 ° and 7 °.Certainly, instrument also can have the angle different relative to workpiece.In addition, two instruments or only an instrument can perform feed motion.
If workpiece is arranged respectively with the tool axis of its axis relative to these two instruments relative tilt in addition, turn out to be and meet practice, wherein, not only workpiece but also at least one instrument are moved.Especially namely at least one instrument workpiece is placed in oscillating motion or two instruments are placed in around in the rotary motion of tool axis to be delivered to by forming force, and at least one in tool axis is relative to axis tipping.
At this, by loading workpiece or shaping jig with liquid or solid lubricant before shaping, the remarkable lifting of obtainable degree of deformation can be realized.
There is provided a kind of to utilize second object mentioned of the teeth portion component of this forming method manufacture a kind of teeth portion component, especially bevel gear, crown gear or roller gear realize because higher required precision utilizes according to the present invention.Preferably, this also relates to such component, is utilizing the degree of deformation (such as in flange shaft) needing local φ >4 between the stroke shaping period not with intermediate annealing wherein.
Accompanying drawing explanation
The present invention allows a large amount of form of implementation.In order to further illustrate its general principle, one of them is shown in the drawings and illustrate below.Wherein:
Fig. 1 shows the side view at the shaping jig performed during forming method and workpiece;
Fig. 2 shows the top view of the forming surface to workpiece;
Fig. 3 shows the side view with another shaping jig of two instruments during performing forming method;
Fig. 4 shows the perspective view of the bevel gear manufactured with this forming method;
Fig. 5 shows the perspective view of the roller gear manufactured with this forming method.
Detailed description of the invention
Next in order to illustrate that general principle describes in detail according to forming method of the present invention according to Fig. 1 and 2.Fig. 1 shows in side view for known waving or the manufacture of swaging method is embodied as the shaping jig 1 of the workpiece 2 of teeth portion component with itself.To this, shaping jig 1 has rotational symmetric instrument 3, and it is placed in the rotary motion of the oscillating motion relative to axis 5 or the tool axis around tipping 6 to be delivered to by forming force on the workpiece 2 that is maintained in punch die 4.Compared with prior art namely do not produce reversing motion but around the motion of rotation.Thus, be applied on the workpiece 2 that is maintained in punch die 4 corresponding to temporary transient contact surface from the forming force F of 5s, the axis instrument 3 of the periphery relative to workpiece 2 in the region in sub-face 7, wherein, forming force F has its maximum F between axis 5 and the periphery of profiled member
maxand there is in edge region its minimum of a value F
min.By the temperature that workpiece 2 is heated to about 200 ° of C to be passed to when making forming force F different in whole cognizable forming surface 8 in fig. 2 but until whole forming surface 8 is loaded at least one times by with forming force f on serial action to the sub-face 7 progressively or constantly changed, can to realize shockingly high degree of deformation when power effect is smaller.
As cognizable in the top view to forming surface 8 especially in fig. 2, forming force F is by localized delivery on corresponding sub-face 7, and wherein, the sub-face 7 selected converts after predetermined circulation continuously about forming surface 8.The different sub-face 7 so determined, 7', 7'', 7''' have consistent size respectively and schematically illustrate in fig. 2.Due to the power effect F to the continuous advance on the sub-face of difference 7,7', 7'', 7''', being associated with shearing force produces the power fluctuated and introduces, and it introduces relative to the pure axial power common according to prior art the distortion moment that reaction reduces.As a result, the advantage of thermoforming and cold forming is combined by the forming method according to the present invention at the temperature that low-grade fever is shaping.
Addedly also show in figure 3 and performing the variant that to can be applicable to during forming method according to the shaping jig 9 with two instruments 3,10 in forming method of the present invention.At this, shaping jig 9 is applied to the first forming surface 8 of the workpiece face 7 be shown specifically in fig. 2 with the first instrument 3 is applied to the second instrument 10 on the sub-face large relative to sub-face 7 grade of the first forming surface 8 of the second forming surface 11 of workpiece 2.By making these two instruments 3,10 do not loaded by entire surface respectively, while degree of deformation is higher, realize less friction two of workpiece 2 outer surface.These two instruments 3,10 have tool axis 6,12 respectively, and it surrounds consistent angle relative to workpiece 2, make the tool axis 6,12 of these two instruments 3,10 namely respectively opposite piece axis arrange obliquely.
Finally, also respectively illustrate the workpiece 2 as teeth portion component utilizing forming method according to the present invention to manufacture in figures 4 and 5, wherein, show bevel gear in the diagram and show roller gear in Figure 5.
List of numerals
1 shaping jig
2 workpiece
3 instruments
4 punch dies
5 axis
6 tool axis
7 sub-faces
8 forming surface
9 shaping jigs
10 instruments
11 forming surface
12 tool axis
F forming force
F
maxmaximum forming force
F
minminimum forming force.
Claims (18)
1. a forming method, workpiece (2) to be brought in certain temperature or temperature range and by means of shaping jig (1 wherein, 9) next shaping, it is characterized in that, by described shaping jig (1,9) forming force (F) transmitted between shaping period is applied to the forming surface (8 to be formed of described workpiece (2), 11) on sub-face (7), wherein, described sub-face (7) is changed between action period at the forming force (F) of constant.
2. forming method according to claim 1, is characterized in that, in temperature when described workpiece (2) is heated at cold forming between common temperature and the temperature range of half thermoforming.
3. forming method according to claim 1 and 2, it is characterized in that, described workpiece (2) is heated in the temperature between 100 ° of C to 300 ° of C, especially between 150 ° of C and 250 ° C, and described temperature is kept constant between shaping period.
4. the forming method according to item at least one in aforementioned claim, is characterized in that, the stroke of shaping utilization not with intermediate annealing with the degree of deformation of local φ >4 performs.
5. the forming method according to item at least one in aforementioned claim, is characterized in that, described shaping by waving forming method and/or swaging method and/or radial shaping realization.
6. the forming method according to item at least one in aforementioned claim, is characterized in that, described forming force (F) is loaded in whole face and is kept constant with the cycle period of forming force.
7. the forming method according to item at least one in aforementioned claim, is characterized in that, from original state to predetermined setting geometry be molded over unique circulation or multiple complete cycle period is performed.
8. the forming method according to item at least one in aforementioned claim, is characterized in that, the sub-face (7) loaded by described forming force (F) respectively a cycle period determined roughly wait large.
9. the forming method according to item at least one in aforementioned claim, is characterized in that, described sub-face (7) is changed between action period constantly at described forming force (F).
10. the forming method according to item at least one in aforementioned claim, is characterized in that, described forming surface (8,11) be circular, wherein, described sub-face (7) be no more than with described forming surface (8,11) 25% the size of portion's section of area.
11. forming methods according to item at least one in aforementioned claim, it is characterized in that, described shaping jig (1) is applied to upper and described workpiece (2) face type ground, the sub-face (7) of the forming surface (8) to be formed of described workpiece (2), is placed in the bearing-surface back to described instrument (3) of punch die (4) especially by entire surface with instrument (3).
12. forming methods according to item at least one in aforementioned claim, it is characterized in that, described shaping jig (9) is applied to first forming surface (8) of described workpiece (2) sub-face (7) with the first instrument (3) is above applied to the second instrument (10) on especially consistent with the sub-face (7) of described first forming surface (8) the sub-face of second forming surface (11) of described workpiece (2).
13. forming methods according to item at least one in aforementioned claim, it is characterized in that, these two instruments (3,10) are by movement synchronized with each other.
14. forming methods according to item at least one in aforementioned claim, it is characterized in that, these two instruments (3,10) have tool axis (6 respectively, 12), it surrounds consistent angle with the axis of described workpiece (2).
15. forming methods according to item at least one in aforementioned claim, is characterized in that, described workpiece (2) is with tool axis (6,12) the respectively relative tilt of its axis relative to these two instruments (3,10).
16. forming methods according to item at least one in aforementioned claim, it is characterized in that, at least one instrument (3,10) be placed in oscillating motion or two instruments (3 to forming force is delivered on described workpiece (2), 10) be placed in around described tool axis (6,12), in rotary motion, at least one in described tool axis (6,12) tilts relative to described axis (5).
17. forming methods according to item at least one in aforementioned claim, it is characterized in that, described workpiece (2) and/or described shaping jig (1,9) are provided with liquid state or solid lubricant before shaping.
18. 1 kinds of teeth portion components, especially bevel gear, crown gear or roller gear, it manufactures according to the forming method according to item at least one in aforementioned claim.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012016926.4A DE102012016926A1 (en) | 2012-08-27 | 2012-08-27 | Forming process and a molded part produced by this forming process |
| DE102012016926.4 | 2012-08-27 | ||
| PCT/EP2013/067433 WO2014033038A1 (en) | 2012-08-27 | 2013-08-22 | Forming method and a tooth component produced in accordance with said forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104582874A true CN104582874A (en) | 2015-04-29 |
| CN104582874B CN104582874B (en) | 2017-08-11 |
Family
ID=49029099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380045078.9A Active CN104582874B (en) | 2012-08-27 | 2013-08-22 | Forming method and the teeth portion component manufactured according to the forming method |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2888064B1 (en) |
| CN (1) | CN104582874B (en) |
| DE (1) | DE102012016926A1 (en) |
| WO (1) | WO2014033038A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210557A (en) * | 2020-01-21 | 2021-08-06 | 大众汽车股份公司 | Partial shaping for producing a cooling body |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899570A (en) * | 1988-04-05 | 1990-02-13 | Teledyne Industries, Inc. | Apparatus and method of rotary forging with induction heating |
| CN2187503Y (en) * | 1994-02-26 | 1995-01-18 | 方东 | Swinging roll compaction machine |
| CN101185952A (en) * | 2007-11-05 | 2008-05-28 | 机械科学研究总院先进制造技术研究中心 | Two-sided roll milling forming method and two-sided roll milling forming equipment |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3202254C2 (en) * | 1982-01-25 | 1986-02-20 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Method and device for producing a toothed rack |
| JPS6221439A (en) * | 1985-07-18 | 1987-01-29 | Kobe Steel Ltd | Rotary forging device |
| JPS6277145A (en) * | 1985-09-30 | 1987-04-09 | Kobe Steel Ltd | Oscillating forging device |
| SU1430146A1 (en) * | 1986-11-10 | 1988-10-15 | Предприятие П/Я Р-6205 | Method of stamping metallic blanks |
| CH685105A5 (en) * | 1991-07-22 | 1995-03-31 | Colcon Anstalt | Wobble press. |
| DE19525868A1 (en) * | 1995-05-30 | 1996-12-05 | Thyssen Industrie | Process for producing ring-shaped workpieces made of metal with a profiled cross section and rolling mill for carrying them out |
| DE19839428A1 (en) * | 1998-08-29 | 2000-03-02 | Zahnradfabrik Friedrichshafen | Method of manufacturing a rack and embossing device for carrying out the method |
| WO2001034323A1 (en) * | 1999-11-05 | 2001-05-17 | Fritz Feldmeier | Reshaping machine |
| DE10100868B4 (en) * | 2001-01-11 | 2008-01-17 | Sms Eumuco Gmbh | Cold rolling forming machine and tool for making flange-shaped products or flanges from a cylindrical precursor |
| DE10339350B4 (en) | 2003-08-25 | 2011-06-30 | ISE Automotive GmbH, 51702 | Process for hot or hot forging sheet metal |
| DE102005027259B4 (en) | 2005-06-13 | 2012-09-27 | Daimler Ag | Process for the production of metallic components by semi-hot forming |
| DE102007023087B4 (en) | 2007-05-16 | 2017-03-02 | Daimler Ag | Method of making a cam |
| DE102009025023A1 (en) | 2009-06-10 | 2010-12-16 | Neumayer Tekfor Holding Gmbh | Method for producing a camshaft and corresponding camshaft |
-
2012
- 2012-08-27 DE DE102012016926.4A patent/DE102012016926A1/en not_active Withdrawn
-
2013
- 2013-08-22 EP EP13752631.5A patent/EP2888064B1/en active Active
- 2013-08-22 WO PCT/EP2013/067433 patent/WO2014033038A1/en active Application Filing
- 2013-08-22 CN CN201380045078.9A patent/CN104582874B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899570A (en) * | 1988-04-05 | 1990-02-13 | Teledyne Industries, Inc. | Apparatus and method of rotary forging with induction heating |
| CN2187503Y (en) * | 1994-02-26 | 1995-01-18 | 方东 | Swinging roll compaction machine |
| CN101185952A (en) * | 2007-11-05 | 2008-05-28 | 机械科学研究总院先进制造技术研究中心 | Two-sided roll milling forming method and two-sided roll milling forming equipment |
Non-Patent Citations (1)
| Title |
|---|
| 尹海星: "伞齿轮冷摆辗精密成形工艺研究及其CAD/CAPP***开发", 《CNKI硕士论文》, 15 December 2002 (2002-12-15), pages 2 - 30 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210557A (en) * | 2020-01-21 | 2021-08-06 | 大众汽车股份公司 | Partial shaping for producing a cooling body |
| CN113210557B (en) * | 2020-01-21 | 2023-11-10 | 大众汽车股份公司 | Partial shaping for producing a cooling body |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102012016926A1 (en) | 2014-02-27 |
| WO2014033038A1 (en) | 2014-03-06 |
| EP2888064B1 (en) | 2020-10-14 |
| EP2888064A1 (en) | 2015-07-01 |
| CN104582874B (en) | 2017-08-11 |
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