EP2555888B1 - Werkzeugeinheit einer rundknetmaschine - Google Patents
Werkzeugeinheit einer rundknetmaschine Download PDFInfo
- Publication number
- EP2555888B1 EP2555888B1 EP11711525.3A EP11711525A EP2555888B1 EP 2555888 B1 EP2555888 B1 EP 2555888B1 EP 11711525 A EP11711525 A EP 11711525A EP 2555888 B1 EP2555888 B1 EP 2555888B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- forming tools
- tool
- tool unit
- closure pressure
- unit according
- 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.)
- Not-in-force
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
- B21J7/02—Special design or construction
- B21J7/14—Forging machines working with several hammers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
- B21J7/02—Special design or construction
- B21J7/14—Forging machines working with several hammers
- B21J7/145—Forging machines working with several hammers the hammers being driven by a rotating annular driving member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
- B21J7/02—Special design or construction
- B21J7/14—Forging machines working with several hammers
- B21J7/16—Forging machines working with several hammers in rotary arrangements
-
- 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
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
- B21J7/20—Drives for hammers; Transmission means therefor
- B21J7/46—Control devices specially adapted to forging hammers, not restricted to one of the preceding subgroups
Definitions
- the invention relates to a tool unit of a rotary swaging machine for forming preferably rod-shaped or tubular workpieces, with a plurality of arranged around a working axis forming tools which are driven by a tool drive radially to the working axis with a lifting movement and adjusting means by which stroke positions of the forming tools are adjustable in that the forming tools abut one another in a closed state of the forming tools with a closing pressure dependent on the set stroke positions.
- Such tool units have long been used in practice for forming rod-shaped or tubular workpieces, in which a defined workpiece longitudinal section is usually reduced in its cross-section.
- the tool units basically have at least two forming tools which are to be machined
- Workpiece longitudinal section can completely or partially enclose and at the same time for forming the workpiece with a high-frequency, oscillating, movement against each other radially to the workpiece longitudinal section to be moved and thereby exert high radial compressive forces on this.
- a rotational relative movement between the workpiece and the Umformknettechnikmaschineen is generated, so that the workpiece longitudinal portion is uniformly pressurized over its entire circumference by the Umformknettechnikmaschinemaschineen.
- the feed process is characterized in this respect by constantly set stroke positions of the forming tools, i. with respect to the working axis of the tool units during machining constant radial Hubendlagen the forming tools.
- the result of the forming process depends fundamentally on correctly set stroke positions of the forming tools.
- (NC-controlled) Einstechrundkneten example those stroke positions of the forming tools, in which the forming tools in a closed state of the forming tools, the so-called closing point abut each other with a dependent of the set stroke positions closing pressure, used as a reference value for the control of the workpiece forming processes.
- the lifting positions of the forming tools are adjusted stepwise in the direction of the working axis of the tool unit (so-called jogging operation) until the lifting positions of the forming tools are set in such a way that an operator is unable to move due to the for the manual driving of the forming tools required force that assumes a correct, ie a desired closing point for a subsequent workpiece forming process is set.
- This procedure entails the risk of setting the closing point with a too high closing pressure, so that possibly damage to the machine tool may occur during operation of the tool unit.
- a tool unit of a rotary swaging machine and a method for setting such a tool unit, in the case of which the resulting at the set stroke positions of the forming tools closing pressure can be checked, are known from DE 199 55 321 A1 .
- This document discloses a rotary swaging machine with a hammer shaft on which a plurality of machining tools in the radial direction of a continuous axis of a workpiece to be machined are movably guided.
- the processing tools are acted upon at their remote from the workpiece side intermittently by plunger.
- To drive the plunger are circulating within an outer ring Rollers are provided, which move over the heads of the plunger away while driving the plunger in the direction of the workpiece to be machined.
- a piston-cylinder arrangement is provided with a compression space whose internal pressure is measured.
- the present invention has set itself the goal of allowing a measurement of the closing pressure on tool units of the type mentioned with structurally particularly simple means.
- a measuring device for measuring a parameter is provided in the tool unit mentioned above, by means of which a drive torque for driving the forming tools can be determined.
- this makes possible a construction of the measuring device which is particularly simple in terms of construction, since no plurality of measuring transducers assigned to the respective forming tools are required.
- the determination of the drive torque allows reliable (summed over the forming tools) checking the closing pressure of the forming tools, since this results from the introduced into the forming tools driving torque of the tool drive and is proportional to this.
- the determination of the drive torque in particular overloads of the drive train can be prevented.
- the stroke positions of the forming tools of the tool unit can be adjusted in a simple and reproducible manner by means of a measuring device for checking the closing pressure of forming tools in such a way that a defined closing pressure is given or maintained in the closing point of the forming tools.
- a measuring device for checking the closing pressure of forming tools in such a way that a defined closing pressure is given or maintained in the closing point of the forming tools.
- the risk of overloading the components of the tool unit and thus their damage is minimized.
- the adjustment of the tool unit is facilitated and can also be performed by a less experienced operator.
- due to the objectified and reproducible setting of the closing point lower tolerance variations of the forming products can be realized, which is particularly in the production of high-precision components with tight tolerances advantage.
- a particularly preferred embodiment of the invention is characterized in that a control unit for closing pressure control is provided, wherein the measured parameter for checking the closing pressure by the control unit, in particular with respect to a Soll Suites- or setpoint specification, is processable.
- the associated advantage is essentially that the adjustment of the tool unit is facilitated.
- measured values of the measuring device can thus be provided in such a way that they are accessible to the operator, for example, by a display unit can be made.
- a check of the closing pressure by the user for example by means of corresponding tables, by means of which the operator is able to assign a corresponding closing pressure to the measured value, is furthermore required.
- information based on an evaluation of the measured values of the parameter can be made available by the control unit. These can, for example, inform about a too low, a correct or too high closing pressure setting and made accessible to the operator via an audible or visual display.
- the setting of the tool unit is greatly facilitated overall and increases the ease of use. At the same time, the risk of incorrect settings and associated damage to the tool unit is minimized further.
- the tool unit preferably has an operating mode which can be selected via the control unit for checking the closing pressure.
- This offers the advantage that the risk of overloading the tool unit and the associated damage is reduced.
- the forming tools can either be selectively moved to the closing point and held in this.
- the forming tools are preferably driven with a small number of strokes sufficient for a reliable measurement of the parameter, whereby dynamic effects occurring during the drive of the forming tools can also be taken into account, at least partially.
- the drive can be provided according to the invention for generating a relative rotational movement of a tool holder and a tool holder surrounding the outer ring, resulting in a particularly robust and in operation against disturbances little vulnerable type of tool unit results.
- the measuring device is provided for measuring the current consumption of the tool drive when driving the forming tools.
- the take-up current of the tool drive is on the one hand closely with the (electric) power consumption of the tool drive, on the other hand with the drive torque applied by the tool drive correlates and therefore allows a simple and reliable determination of these key figures.
- the derived from the drive torque of the tool drive closing pressure of the forming tools can be determined without much effort.
- Such a measuring device is still largely insensitive to the vibrations occurring during operation of the tool unit and offer a cost advantage due to their free availability on the market, spielspielmik compared to other more sophisticated means for determining the drive torque.
- the measuring device preferably additionally detects an operating voltage respectively applied to the tool drive, by means of which the power consumption can be determined by calculation.
- the closing pressure can preferably be determined by the control unit on the basis of a characteristic curve, preferably defined in the control unit, for the parameter or a characteristic number determined by the parameter and the closing pressure.
- the characteristic curve describes the relationship between the measured parameter or a characteristic number determined by means of the parameter and the closing pressure of the forming tools and can be stored in tabular form or in the form of a mathematical formula in the control unit.
- the adjusting means are formed as a plurality of, preferably between the forming tools and these respective associated Hämmerst Schemeeln out, adjusting wedges, which are arranged parallel to the working axis, said Adjusting wedges for adjusting the stroke position of the forming tools in the direction of the working axis relative to the forming tools are longitudinally displaceable.
- the adjusting means are preferably jointly adjustable according to the invention and for this purpose in particular with an adjusting means, for example a synchronous shaft, connected.
- the risk of an excessively high closing pressure setting is further minimized by the fact that the adjusting means are controllable by means of the control unit as a function of the closing pressure.
- the stroke positions of the forming tools or a setting position of the feed means correlating with the stroke position can be used as a reference value for the control of the tool unit in a subsequent workpiece forming process, since all radial dimensions of the product to be manufactured by the workpiece forming process are defined based on the closing point.
- the respective reference value is advantageously automatically transferable to a machine control of the rotary swaging machine.
- the measuring device and / or the control device is an integral part of a machine control of a rotary kneading unit or is covered by it.
- the tool unit may also preferably be designed as an external, internal or double rotor, in particular as a counter-rotor, according to the invention.
- Fig. 1 is a total of 10 designated tool unit of only partially reproduced rotary swaging machine 12 for forming preferably rod-shaped or tubular workpieces shown.
- the tool unit 10 has a housing 14 with a feed opening 16 arranged on the front side for feeding the workpieces to be reshaped along a working axis denoted by 18.
- the housing 14 surrounds a in the Fig. 2 closer reproduced kneading 20, which has a plurality of forming tools 22 which are arranged around the working axis 18.
- the forming tools 22 are together with hammer rams 24 in radial recesses 26 of a trained as a kneading head tool holder 28 and guided by a tool drive 30 (FIGS. Fig. 1 ) can be driven radially to the working axis 18 with a lifting movement.
- a tool holder 28 concentrically arranged outer ring 32 surrounds the tool holder 28 and thus forms with the tool holder 28 an annular space 34, in which formed as rollers pressure members 36 are arranged.
- the tool unit 10 is formed in the embodiment shown here as an external rotor, ie, the outer ring 32 is by the tool drive 30 (FIG. Fig. 1 ) with respect to the tool holder 28 circumferentially drivable.
- the hammer plunger 24 protrude into an orbit of the co-moving by the rotation of the outer ring 32 pressure members 36 and are in radial alignment with a respective pressure member 36, as shown in the Fig. 2 is shown, moved by this radially inwardly in the direction of the working axis 18 and press the forming tools 22 intermittently radially in the direction of the working axis 18.
- the forming tools 22 practice thereby on a along the working axis 18 between the forming tools 22 introduced workpiece a mutually facing Pressure pulse through which the workpiece is formed.
- the number of strokes of the driven forming tools 22 may be several thousand strokes per minute during the forming process.
- the tool unit 10 has for adjusting the stroke position of the forming tools 22 in the radial direction relative to the working axis 18 a plurality of setting means 38 formed as adjusting wedges on.
- the stroke positions of the forming tools 22 are adjustable so that the forming tools 22 in a closed state of the forming tools 22, as this in the Fig. 2 is shown, the closing point explained above, abut each other with a dependent of the set stroke position closing pressure.
- the forming tools are not in the closing point with each other with their workpiece-side work surfaces, but with their mutually facing side surfaces, the so-called roofs, on.
- the adjusting means 38 are in the embodiment shown here parallel to the working axis 18 in the direction of the highly schematic representation in the Fig. 3 Arranged with 39 directional arrows longitudinally displaceable.
- the adjusting means are, as this particular from the Fig. 3 shows, arranged in a conventional manner in each case between one of the forming tools 22 and the forming tool 22 each associated hammer plunger 24 and guided in axial recesses of the tool holder 28 (not shown).
- the adjusting means 38 are also arranged in each case with its insertion opening 16 facing away from the end of a not shown in detail in the drawing synchronous shaft and axially displaceable together by this.
- the tool unit 10 further comprises a measuring device 40, which for determining a respective electrical power consumption of the tool drive 30, a respective receiving current of the tool drive 30 and one on the Tool drive 30 applied operating voltage when driving the outer ring 32 and the forming tools 22 detected.
- the power consumption of the tool drive 30 is proportional to the closing pressure of the forming tools 22 derived from a drive torque of the tool drive, so that the closing pressure resulting at the set stroke positions of the forming tools 22 in the closing point of the forming tools 22 by a in the Fig. 1 shown control unit 42 can be determined or determined by means of the specific power consumption of the tool drive.
- the control unit 42 checks the closing pressure in relation to a presettable via the control unit 42 closing pressure target value based on a respective defined in the control unit 42 characteristic curve, from which the relationship between the power consumption of the tool drive 30 and the closing pressure emerges.
- respective characteristic curves are deposited in this respect for different forming tools 22 or combinations of hammer rams 24 and forming tools 22.
- the adjustment means 38 ( Fig. 2 ) are controllable with respect to their displacement or their displacement position by means of the control unit 42 in dependence on the setpoint specification.
- the tool unit 10 additionally has an operating mode of the tool device 10 that can be selected via the control unit 42 for checking the closing pressure.
- the rotary tools 22 are opposite one the stroke numbers used for the forming processes lower stroke number drivable.
- the stroke positions of the forming tools 22 set in response to the set point specification of the closing pressure, i. the axial position of the synchronous shaft correlating with the adjusted stroke position can be automatically transferred by the control unit 42 to a machine controller 44 of the rotary kneader 12 as a reference value for the control of the subsequent workpiece forming processes, on the basis of which radial dimensions of a formed product to be manufactured can be defined.
- the tool unit 10 can also be designed as an internal or double rotor, in particular as a counter rotor, depending on the requirements imposed on it.
- a desired value of the closing pressure of the forming tools 22 is set via the control unit 42 at the closing point of the forming tools 22 or a parameter correlating with the closing pressure.
- an operating mode of the tool unit provided for closing pressure control is used to check the closing pressure 10 via the control unit 42 on or selected, whereby the outer ring 32 is placed over the tool drive 30 for checking the closing pressure in a relative (slow) rotational movement, in which the determination of the power consumption of the tool drive, ie the detection of power consumption and the applied operating voltage can occur and possible risks of overloading of the tool unit 10 are minimized.
- the stroke position of the forming tools 22 is not delivered at this time in the direction of the working axis 18, ie the forming tools 22 are not yet in a closed state at this time.
- the adjusting means 38 are now controlled by the control unit 44 via the synchronous shaft (not shown) such that the adjusting means 38 are adjusted continuously or stepwise by means of the synchronous shaft for adjusting the stroke position of the forming tools 22 in the direction of the working axis 18.
- the adjusting means 38 are for this purpose in the direction of the insertion opening 16 of the housing 14 (FIG. Fig. 1 ) of the tool unit 10, wherein the receiving current and the operating voltage of the tool drive 30 measured during simultaneous rotation of the outer ring 32 by means of the measuring device 40 and from these parameters, the power consumption of the tool drive 30 is determined.
- the power consumption of the tool drive determined from the pickup current and the operating voltage of the tool drive 30 is compared with the closing pressure setpoint based on the characteristic curve defined in the control unit 42.
- the adjustment of the adjusting means 38 in the closing point of the forming tools and thus the adjustment of the stroke positions of the forming tools 22 is completed.
- the setting position of the adjusting means 38 or the synchronizing shaft in the stroke positions of the forming tools thus defined are automatically transferred as a reference value for the control of subsequent workpiece forming processes to the machine controller 44 of the rotary swaging machine 12.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Control Of Presses (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11711525T PL2555888T3 (pl) | 2010-04-09 | 2011-03-28 | Jednostka narzędziowa kowarki obrotowej |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010014602A DE102010014602A1 (de) | 2010-04-09 | 2010-04-09 | Werkzeugeinheit einer Rundknetmaschine |
PCT/EP2011/054697 WO2011124487A1 (de) | 2010-04-09 | 2011-03-28 | Werkzeugeinheit einer rundknetmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2555888A1 EP2555888A1 (de) | 2013-02-13 |
EP2555888B1 true EP2555888B1 (de) | 2014-06-04 |
Family
ID=44118885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11711525.3A Not-in-force EP2555888B1 (de) | 2010-04-09 | 2011-03-28 | Werkzeugeinheit einer rundknetmaschine |
Country Status (9)
Country | Link |
---|---|
US (1) | US20130067977A1 (pl) |
EP (1) | EP2555888B1 (pl) |
KR (1) | KR20130040884A (pl) |
CN (1) | CN102834199B (pl) |
DE (1) | DE102010014602A1 (pl) |
DK (1) | DK2555888T3 (pl) |
ES (1) | ES2498922T3 (pl) |
PL (1) | PL2555888T3 (pl) |
WO (1) | WO2011124487A1 (pl) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106493243A (zh) * | 2016-09-29 | 2017-03-15 | 汪卓杰 | 一种方管压花机 |
CN107030241A (zh) * | 2017-04-28 | 2017-08-11 | 西北有色金属研究院 | 一种旋锻机用模具及其制造方法 |
CN108188318A (zh) * | 2017-12-28 | 2018-06-22 | 天津中嘉利达机械部件有限公司 | 输出轴高速截断装置 |
KR102267911B1 (ko) | 2019-11-01 | 2021-06-22 | 리녹스 주식회사 | 테이퍼 형상 가공이 가능한 다단 스웨이징 장치 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59178146A (ja) * | 1983-03-25 | 1984-10-09 | Japan Royal Seiki:Kk | スウエ−ジング加工方法 |
JP2887513B2 (ja) * | 1990-09-07 | 1999-04-26 | 株式会社ジャロック | スウエージング加工装置 |
JP2553447B2 (ja) * | 1992-12-26 | 1996-11-13 | 桂一郎 吉田 | スエージングマシンにおける加工方法及び装置 |
DE19955321B4 (de) * | 1999-11-17 | 2008-02-07 | Volkswagen Ag | Rundknetmaschine mit hydraulischem Kraftausgleich |
CN2743060Y (zh) * | 2004-06-03 | 2005-11-30 | 王彦彬 | 一种锻造机的旋锻装置 |
CN2877919Y (zh) * | 2006-03-20 | 2007-03-14 | 西安创新精密仪器研究所 | 变径旋锻机 |
-
2010
- 2010-04-09 DE DE102010014602A patent/DE102010014602A1/de not_active Withdrawn
-
2011
- 2011-03-28 DK DK11711525.3T patent/DK2555888T3/da active
- 2011-03-28 ES ES11711525.3T patent/ES2498922T3/es active Active
- 2011-03-28 PL PL11711525T patent/PL2555888T3/pl unknown
- 2011-03-28 US US13/640,075 patent/US20130067977A1/en not_active Abandoned
- 2011-03-28 EP EP11711525.3A patent/EP2555888B1/de not_active Not-in-force
- 2011-03-28 WO PCT/EP2011/054697 patent/WO2011124487A1/de active Application Filing
- 2011-03-28 CN CN201180017701.0A patent/CN102834199B/zh not_active Expired - Fee Related
- 2011-03-28 KR KR1020127029362A patent/KR20130040884A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
WO2011124487A1 (de) | 2011-10-13 |
ES2498922T3 (es) | 2014-09-26 |
US20130067977A1 (en) | 2013-03-21 |
DE102010014602A1 (de) | 2011-10-13 |
CN102834199A (zh) | 2012-12-19 |
PL2555888T3 (pl) | 2014-11-28 |
EP2555888A1 (de) | 2013-02-13 |
CN102834199B (zh) | 2015-07-29 |
KR20130040884A (ko) | 2013-04-24 |
DK2555888T3 (da) | 2014-09-08 |
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