EP0754511B1 - Verfahren zum Walzen von Profilen in ein Werkstück - Google Patents

Verfahren zum Walzen von Profilen in ein Werkstück Download PDF

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Publication number
EP0754511B1
EP0754511B1 EP95111557A EP95111557A EP0754511B1 EP 0754511 B1 EP0754511 B1 EP 0754511B1 EP 95111557 A EP95111557 A EP 95111557A EP 95111557 A EP95111557 A EP 95111557A EP 0754511 B1 EP0754511 B1 EP 0754511B1
Authority
EP
European Patent Office
Prior art keywords
rolling
braking
workpiece
drive
valve
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.)
Expired - Lifetime
Application number
EP95111557A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0754511A3 (enrdf_load_stackoverflow
EP0754511A2 (de
Inventor
Jürgen Abele
Michael Damms
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rollwalztechnik Abele and Holtich GmbH
Original Assignee
Rollwalztechnik Abele and Holtich GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rollwalztechnik Abele and Holtich GmbH filed Critical Rollwalztechnik Abele and Holtich GmbH
Publication of EP0754511A2 publication Critical patent/EP0754511A2/de
Publication of EP0754511A3 publication Critical patent/EP0754511A3/xx
Application granted granted Critical
Publication of EP0754511B1 publication Critical patent/EP0754511B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/04—Making by means of profiled-rolls or die rolls
    • 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 present invention relates to a method for rolling profiles in a workpiece, especially cross rolls, Longitudinal rolling and cross rolling of threads, knurling, Tooth roller profiles or the like, with at least one rolling tool and at least one drive device with a drive motor, and an apparatus for performing the method.
  • Such methods and devices are in manifold shape and design known on the market and in use. With them are different Rolling processes, such as cross rolling, longitudinal rolling and cross rolling, Threads, knurls, multiple gears and various Tooth profiles created in workpieces.
  • the problem with these rolling processes is that during rolling an exact division should be created. requirement this is because the rolling tools are uniform with more exact Penetration into the workpiece to be machined. there the rolling tools are evenly and into one workpiece retracted at the same time, so that by a rotating Movement a profile can be rolled into the workpiece.
  • the difficulty is to be seen in the fact that considerable differences during the forming process Peripheral speed will take effect.
  • the outside diameter the roller with a coordinated pitch in relation to the number of teeth to be produced and the initial diameter of the Workpiece determines the speed at the start of rolling. With As the forming progresses, the core diameter forms and tip circle diameter. The combs at these diameters differing division inevitably. This creates considerable radial loads on the tooth flanks, the balanced by radial compliance of the drive Need to become.
  • JP-A-62077108 is a Rolling mill shown, which has multiple drive trains is operated. There is one in the drive train inductive brake as a dynamo-driven motor permanent switched on to only wear the Drive elements, especially the drive joints minimize and increase a lifespan.
  • WO-A-92 20474 shows an apparatus and a Method of cold forming by rolling, two parallel rollers are arranged symmetrically and are driven in unison.
  • the inventor has set the goal of a method as well to develop a device of the type mentioned above, which eliminate the disadvantages mentioned, a Workpiece scrap minimized and adjustment and Aligning the rolling tools for profiling at Workpiece production is guaranteed.
  • the Drive device near the rolling tool, braked or accelerated and thus a game in the Drive device canceled and the drive device when the rolling tool engages in the workpiece slowed down hydrodynamically and shortly after intervention Decelerated and the play between workpiece and Tool is approved.
  • This invention allows the rolling dies used in a workpiece can be retracted, exactly at the same time Time and with exactly the same division into that Intervene workpiece.
  • a Drive device consisting of several elements, such as for example drive motor, gearbox, joints and PTO shaft exists, is braked, thereby one But the speed of the drive device is not reduced, but a spin in this Drive device is placed on a certain side.
  • braking by means of a Braking device happens as close as possible to that Rolling tool is arranged to directly there Rolling tool to turn a game off.
  • the Brake device assigned to a transmission element and be movable with it to and from the workpiece.
  • the torque transmission from the braking device to Transmission element of the drive device can for example via gear or sprocket connection, Timing belts, V-belts or the like. Elements are done.
  • Also essential in the present invention is the Time at which the drive device is braked or on Game is balanced. It should intervene Rolling tools happen in the workpiece. Then can the braking torque, which has no influence on speed the drive device and in particular the rolling tools has to be switched off gently.
  • hydrodynamic Brake As hydrodynamic Brake designed.
  • hydrodynamic Brake is a braking process precisely and precisely controllable.
  • a Control can be done here by a valve and in particular by a three-way valve can be taken over, which with a Pressure relief valve and with a pressure reducing valve connected is.
  • This allows the hydrodynamic Brake manually and / or electronically or computer controlled regulate.
  • This control can e.g. with the calculator of Device for rolling coupled and a corresponding Coupling and uncoupling or switching the Braking torque or the hydrodynamic brake for different applications and braking torques can be regulated.
  • hydrodynamic brakes Another advantage of hydrodynamic brakes is that these work wear-free and extremely little space in the Take the machine.
  • a game by accelerating the drive device or by accelerating the transfer elements to one Side can be laid. This can be done, for example additional servomotors happen which the Accelerate drive motion without the Speed of the rolling tools is impaired or is changed. It is also thought that braking and accelerating the drive device as close as possible on the rolling tool simultaneously or alternately happens.
  • Braking by means of a hydrodynamic brake will Game both drive devices canceled, so that a Intervention in a workpiece happens without play.
  • the braking device can start rolling or after rolling be uncoupled so that after a centering and Forming phase or rolling phase a workpiece with a extremely high surface quality and low roughness high precision.
  • a device R according to the invention for rolling profiles 1 has a roller 1 that rotates about an axis 2 is rotatably mounted.
  • the roller 1 is on at least one Bearing block 3 releasably set again.
  • the setting of the roller 1 on a shaft 26 of the bearing block 3 can, for example, via shaft-hub connections, Multi-tooth connections or other force and positive connections happen.
  • the drive device 4 exists from a drive motor 5 which has a drive movement transmits a propeller shaft 6.
  • the PTO shaft 6 is preferably designed to be extendable or insertable, such as that can be done, for example, using multi-tooth profiles.
  • a joint 7 is located between the drive shaft 6 and the drive motor 5 switched on.
  • the propeller shaft 6 is over corresponding joint 8 to a transmission element 9 connected, which in turn with the shaft 26 in Connection is established.
  • the transmission element 9 can for example designed as a shaft or pipe section his. This transmits the drive movement of the Drive motor 5 on the shaft 26 and the roller 1st
  • the transmission element 9 is a Brake device 10 assigned. This can, for example via a gear 11 with a ring gear 12 of Transmission element 9 are connected. There are however other possibilities within the scope of the invention, around the braking device 10 with the transmission element 9 connect, such as via timing belts, V-belts, Chains or the like Elements.
  • the braking device 10 consists of a Hydraulic brake, especially from a hydrodynamic Brake that the drive movement of the transmission element 9 counteracts.
  • counteracting which is caused hydraulically in the braking device 10
  • roller 1.1 is also rotatable on an axis 2.1 arranged to which, as described above, the elements such as Bearing block 3.1, shaft 26.1, transmission element 9.1 with Braking device 10.1 and joints 7.1, 8.1 with intermediate PTO shaft 6.1 and a drive motor 5.1 connect.
  • the elements such as Bearing block 3.1, shaft 26.1, transmission element 9.1 with Braking device 10.1 and joints 7.1, 8.1 with intermediate PTO shaft 6.1 and a drive motor 5.1 connect.
  • rollers 1 and 1.1 Since axes 2 and 2.1 are arranged in parallel here the rollers 1 and 1.1 on a not shown here Rail system movable in and against the x direction are, the rollers 1 and 1.1 evenly in the Workpiece 13 with the direction of rotation of the rollers 1, 1.1 intervene.
  • the braking devices 10, 10.1 with the Transmission elements 9, 9.1 as close as possible to the Rolls 1, 1.1 and as close as possible to the bearing blocks 3, 3.1 arranged.
  • the braking devices 10, 10.1 are likewise, like the rollers 1, 1.1, in and against an x-direction movable back and forth, this Movements of the extendable cardan shafts 6, 6.1 with whose joints 7, 7.1, 8, 8.1 are compensated so that the drive motors 5, 5.1 can remain stationary.
  • the Drive motors 5, 5.1 or their gear 25, 25.1 can not for synchronization of the drive movement here shown couplings to be connected.
  • FIG. 2 shows how the transmission elements 9, 9.1 rotate about the axes 2, 2.1 and the rollers 1, 1.1 drive in the same direction.
  • the braking devices are there 10, 10.1 with the transmission elements 9, 9.1 in Connection.
  • the braking devices 10, 10.1 in Operation set and brake the transmission element 9, 9.1 from.
  • the braking process of the braking device 10, 10.1 has no influence on the drive speed of the Transmission element 9, 9.1 and not on the Speed of rotation of the rollers 1, 1.1, since that Drive torque of the drive motors 5, 5.1 by Is many times larger than the counteracting one Braking torque, which in the braking devices 10, 10.1 is generated hydrodynamically.
  • FIG. 3 is one Control of the braking devices 10, 10.1 shown, the braking devices 10, 10.1 as hydraulic Brakes and especially as hydrodynamic brakes are trained.
  • hydrodynamic brakes can be controlled precisely and precisely and a free selectable braking torque to adjust the division Match compensation is possible.
  • Another advantage of hydrodynamic brakes is that these are extreme work with low wear and are computer controlled by pneumatic valves can be actuated or regulated.
  • the braking devices 10, 10.1 are via connecting lines 15 and 15.1 connected with each other in a cross. These lead into a valve 16.
  • the valve 16 is preferred designed as a three-way valve and leaves a blocking position and two flow positions, with one Flow positions a change of direction Braking devices 10, 10.1 should be included.
  • this electro-hydraulic valve is manual also via electromagnets with return springs in both Directions actuable. It switches the braking devices 10, 101 off or on.
  • a manometer 19 and a check valve 20 are connected. Via the check valve 20 and in particular whose line can hydraulic fluid system be fed.
  • the manometer 19 shows the maximum Pressure (e.g. 50 bar), which by the braking devices 10, 10.1 is generated.
  • a pressure gauge 22 connected to a low pressure (e.g. 10 bar) in the system.
  • a line 23 for biasing the entire system Pressure reducing valve 24 connected, which also at Thermal expansion, as is the case with hydrodynamic brakes Case is, overpressure compensates. This is with one Tank T connected. If the pressure is too low due to Leakages or similar losses can be caused by hydraulic fluid at P be fed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Metal Rolling (AREA)
EP95111557A 1995-07-18 1995-07-22 Verfahren zum Walzen von Profilen in ein Werkstück Expired - Lifetime EP0754511B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19526071 1995-07-18
DE19526071A DE19526071A1 (de) 1995-07-18 1995-07-18 Verfahren zum Walzen von Profilen in ein Werkstück

Publications (3)

Publication Number Publication Date
EP0754511A2 EP0754511A2 (de) 1997-01-22
EP0754511A3 EP0754511A3 (enrdf_load_stackoverflow) 1997-01-29
EP0754511B1 true EP0754511B1 (de) 2001-12-12

Family

ID=7767073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95111557A Expired - Lifetime EP0754511B1 (de) 1995-07-18 1995-07-22 Verfahren zum Walzen von Profilen in ein Werkstück

Country Status (3)

Country Link
EP (1) EP0754511B1 (enrdf_load_stackoverflow)
DE (2) DE19526071A1 (enrdf_load_stackoverflow)
ES (1) ES2167387T3 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19718257C2 (de) * 1997-04-30 2001-06-07 Bad Dueben Profilwalzmaschinen Profilwalzmaschine zum Walzen eines rotationssymmetrischen Werkstücks mit einem präzisen Außenprofil
KR100443883B1 (ko) * 2000-11-24 2004-08-09 주식회사 만도 이형 치형 동시 전조장치
DE10316249B4 (de) * 2003-03-04 2010-04-15 Langenstein & Schemann Gmbh Verfahren zum Umformen eines Werkstückes und Walzmaschine
DE20312485U1 (de) 2003-03-04 2003-10-16 Langenstein & Schemann Gmbh, 96450 Coburg Walzmaschine zum Umformen eines Werkstücks
DE10339733A1 (de) * 2003-08-28 2004-11-25 Siemens Ag Antrieb zum rotatorischen Betrieb einer Walze
DE102010031316B4 (de) 2010-07-14 2013-01-24 Hilti Aktiengesellschaft Herstellungsverfahren für ein längliches Halbzeug

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU30467A1 (enrdf_load_stackoverflow) *
JPS5916853B2 (ja) * 1978-11-21 1984-04-18 株式会社網野鉄工所 プレス機械におけるロ−ルフイ−ド式材料自動供給装置
JPS6277108A (ja) * 1985-09-30 1987-04-09 Nippon Kokan Kk <Nkk> 圧延機のシヨツクトルク軽減装置
FR2676668B1 (fr) * 1991-05-23 1994-07-01 Escofier Tech Sa Dispositif et procede permettant le formage a froid de cannelures sur la paroi d'une piece de revolution.
JP2810988B2 (ja) * 1991-08-20 1998-10-15 川崎製鉄株式会社 リブ位相ずれ防止方法および装置

Also Published As

Publication number Publication date
DE59509943D1 (de) 2002-01-24
EP0754511A3 (enrdf_load_stackoverflow) 1997-01-29
DE19526071A1 (de) 1997-01-23
ES2167387T3 (es) 2002-05-16
EP0754511A2 (de) 1997-01-22

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