EP0828572A1 - Verfahren zum herstellen von ringförmigen werkstücken aus metall mit profiliertem querschnitt und walzwerk zu dessen durchführung - Google Patents
Verfahren zum herstellen von ringförmigen werkstücken aus metall mit profiliertem querschnitt und walzwerk zu dessen durchführungInfo
- Publication number
- EP0828572A1 EP0828572A1 EP96917434A EP96917434A EP0828572A1 EP 0828572 A1 EP0828572 A1 EP 0828572A1 EP 96917434 A EP96917434 A EP 96917434A EP 96917434 A EP96917434 A EP 96917434A EP 0828572 A1 EP0828572 A1 EP 0828572A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- die
- tools
- workpiece
- feed direction
- tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000002184 metal Substances 0.000 title claims abstract description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
-
- 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
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H5/00—Making gear wheels, racks, spline shafts or worms
- B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
Definitions
- the invention relates to a method according to the preamble of claim 1 and an apparatus for performing this method.
- a generic method is known from DE 37 18 884 A1, in which the workpieces are formed exclusively by pressing.
- the very large contact area results in very high die loads, which have a negative effect on the service life (elastic deformation, spring-back, crack formation). Accordingly, complex matrix prestresses are necessary.
- the necessary operations such as loading, ejecting, swiveling, cleaning, lubricating and cooling can usually only be carried out one after the other. This naturally leads to a very high cycle time.
- the application of the AGW method according to the invention with tools inclined relative to one another for the production of ring-shaped workpieces with external or spur gear toothing makes it possible for only part of the ring surface of the workpiece to be acted upon during rolling, so that considerably lower contact forces have to be applied.
- the toothing is generated exclusively by the material flowing radially into the toothed, self-rotating, also flowing die.
- the rolled profile of the two rotating tools is not required to produce this toothing.
- the die can be handled independently of the two rotating tools. According to the invention, it can be connected to the blank of the workpiece outside the rolling station and then transported between the two separated tools and, after the rolling process and the retraction of the tools, can be removed from the working area of the rollers together with the finished workpiece.
- the actual rolling station thus has a considerably simpler construction, in that, among other things, the device for ejecting the finished workpiece directly at the rolling station can be dispensed with.
- the partial deformation of the workpiece ring means that much less force is required to press the material radially into the die.
- Another advantage of the method according to the invention is that by simply changing the symmetry conditions on the tools, different and asymmetrical cross sections of the workpiece can be produced. By changing the die, which is easy to manufacture, the type of toothing can be changed in a simple manner.
- Fig. 1 shows in section the rolling station according to the invention
- Fig. 2 shows a schematic top view of the arrangement of the three
- FIG. 3 shows a side view of FIG. 2.
- the two tools 1 and 2 are inclined by the angle ⁇ relative to the feed direction 12, while the axial line of symmetry 11 of the workpiece 10 runs perpendicular to the feed direction 12.
- the workpiece 10 is held in the die 5, which in turn is rotatably mounted in the end 3 of the swivel arm 15 via the roller bearing 4.
- the tooth gaps of the die are closed axially upwards and downwards by the two closing devices 6 and 7, the lower one being fixed relative to the die 5, the upper one being elastically coupled to the upper tool 2 via the spring 9 and being moved therewith after rolling .
- the deformation of the workpiece 10 is determined by the profiles of the workpieces 1 and 2, which are moved towards one another in the feed direction 12 until the final shape of the workpiece 10 is reached and in particular the material has flowed into the cavities of the die 5 in the radial direction.
- the upper tool 2 has at its end a cylindrical mandrel 13 which projects into a corresponding recess in the lower tool 1 and is guided there.
- the rolling station W is shown schematically in accordance with FIG. 1, wherein a swivel arm 15 of the carrier 14 is arranged in the rolling station and can be held there by means of the clamping device 16.
- the two further swivel arms 15 are located in the unloading station E and the loading station B.
- holding plates 18 are arranged below and above the swivel arm, which hold the die 5 in place when the workpiece is removed with the ejector 17 and an ejecting device.
- the lower tool 21 is fixed in the feed direction 20 so that only the upper tool 22 is fed.
- the die 25 with the bearing 24 and the bearing ring 23 is floating with a slide guide 26 in the frame 27.
- the axial line of symmetry 11 by the angle ⁇ inclined with respect to the horizontal while the upper tool is arranged with its axis of rotation inclined by the angle 2 ⁇ relative to the vertical or ⁇ relative to the feed direction 20.
- the die 5 is lubricated and then the blank of the workpiece 10 and the die 5 are joined, the blank being e.g. is pressed with a hydraulic device.
- the die and workpiece are pivoted on the swivel arm 15 into the rolling station.
- the clamping device 16 With the clamping device 16, the outer end 3 of the swivel arm 15 is held.
- the die Before the tools 1 and 2 are delivered, the die is accelerated to the speed of the constantly rotating tools with an auxiliary drive 8.
- the clamping device After completing the rolling process and moving the tools apart, the clamping device is released and the die is swiveled by a further 120 degrees using the swivel arm, and the die is braked simultaneously or subsequently.
- the workpiece 10 is released from the die with the ejector 17, if necessary with helical teeth with simultaneous rotary movement.
- the device can then be cleaned and, if necessary, cooled before it can be loaded again.
- Waizstation according to the invention can be used both as shown in the figures with an essentially vertical feed direction, but also in an embodiment tilted by 90 degrees.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19519142 | 1995-05-30 | ||
DE19519142 | 1995-05-30 | ||
DE19525868 | 1995-07-15 | ||
DE19525868A DE19525868A1 (de) | 1995-05-30 | 1995-07-15 | Verfahren zum Herstellen von ringförmigen Werkstücken aus Metall mit profiliertem Querschnitt und Walzwerk zu dessen Durchführung |
PCT/EP1996/002261 WO1996038241A1 (de) | 1995-05-30 | 1996-05-25 | Verfahren zum herstellen von ringförmigen werkstücken aus metall mit profiliertem querschnitt und walzwerk zu dessen durchführung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0828572A1 true EP0828572A1 (de) | 1998-03-18 |
EP0828572B1 EP0828572B1 (de) | 1998-12-30 |
Family
ID=26015449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96917434A Expired - Lifetime EP0828572B1 (de) | 1995-05-30 | 1996-05-25 | Verfahren zum herstellen von ringförmigen werkstücken aus metall mit profiliertem querschnitt und walzwerk zu dessen durchführung |
Country Status (4)
Country | Link |
---|---|
US (1) | US5946959A (de) |
EP (1) | EP0828572B1 (de) |
JP (1) | JP3382948B2 (de) |
WO (1) | WO1996038241A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1080151C (zh) * | 1999-09-13 | 2002-03-06 | 杨嘉钦 | 铸轮静压力锻造工艺 |
DE10100868B4 (de) | 2001-01-11 | 2008-01-17 | Sms Eumuco Gmbh | Kaltwalz-Umformmaschine und Werkzeug zum Herstellen von flanschförmigen Erzeugnissen bzw. von Flanschen aus einem zylindrischen Vorprodukt |
CN105414422B (zh) * | 2015-12-03 | 2017-07-11 | 常州和仕达机械装备制造有限公司 | 一种齿轮轴向闭式辗压成型工艺 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1986072A (en) * | 1931-06-18 | 1935-01-01 | Schlas Friedrich Im | Device for the manufacture of shaped pieces from annular blanks |
FR1560758A (de) * | 1967-07-01 | 1969-03-21 | ||
US3822574A (en) * | 1973-04-02 | 1974-07-09 | A Krupin | Ring-rolling mill |
DE2504969A1 (de) * | 1975-02-06 | 1976-08-19 | Horst Schenk | Verfahren und vorrichtung zum walzen von ringfoermigen werkstuecken |
DE2715611A1 (de) * | 1977-04-07 | 1978-10-12 | Thyssen Industrie | Ringwalzmaschine |
GB2041268B (en) * | 1979-02-01 | 1982-11-17 | City University And Worshipful | Rotary forging machine |
US4291559A (en) * | 1979-07-30 | 1981-09-29 | Martin Charles F | Sheave making apparatus and method |
JPS6221439A (ja) * | 1985-07-18 | 1987-01-29 | Kobe Steel Ltd | 回転鍛造装置 |
SU1750805A1 (ru) * | 1989-11-09 | 1992-07-30 | Производственное объединение "Нижегородский машиностроительный завод" | Устройство дл торцовой раскатки вращением деталей с центральной полостью |
SU1736662A1 (ru) * | 1990-01-09 | 1992-05-30 | Научно-исследовательский институт металлургической технологии | Инструмент дл торцовой прокатки |
JPH06304693A (ja) * | 1993-04-26 | 1994-11-01 | Reizu Eng:Kk | 歯車の製造方法 |
JP2891048B2 (ja) * | 1993-08-11 | 1999-05-17 | 日産自動車株式会社 | 回転鍛造用金型 |
-
1996
- 1996-05-25 EP EP96917434A patent/EP0828572B1/de not_active Expired - Lifetime
- 1996-05-25 JP JP53617096A patent/JP3382948B2/ja not_active Expired - Fee Related
- 1996-05-25 WO PCT/EP1996/002261 patent/WO1996038241A1/de active IP Right Grant
- 1996-05-25 US US08/953,000 patent/US5946959A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9638241A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH11505769A (ja) | 1999-05-25 |
EP0828572B1 (de) | 1998-12-30 |
WO1996038241A1 (de) | 1996-12-05 |
US5946959A (en) | 1999-09-07 |
JP3382948B2 (ja) | 2003-03-04 |
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