EP1601522A1 - Dispositif de presse electrique - Google Patents

Dispositif de presse electrique

Info

Publication number
EP1601522A1
EP1601522A1 EP03769232A EP03769232A EP1601522A1 EP 1601522 A1 EP1601522 A1 EP 1601522A1 EP 03769232 A EP03769232 A EP 03769232A EP 03769232 A EP03769232 A EP 03769232A EP 1601522 A1 EP1601522 A1 EP 1601522A1
Authority
EP
European Patent Office
Prior art keywords
press device
housing
threaded
angular contact
contact ball
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.)
Withdrawn
Application number
EP03769232A
Other languages
German (de)
English (en)
Inventor
Ralf Kosan
Kai Seelig
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1601522A1 publication Critical patent/EP1601522A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0094—Press load monitoring means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F16C19/522—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to load on the bearing, e.g. bearings with load sensors or means to protect the bearing against overload
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
    • F16C19/542—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact
    • F16C19/543—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact in O-arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2229/00—Setting preload
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2233/00—Monitoring condition, e.g. temperature, load, vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/30—Application independent of particular apparatuses related to direction with respect to gravity
    • F16C2300/32—Horizontal, e.g. bearings for supporting a horizontal shaft

Definitions

  • the invention relates to an electrical pressing device with an electric motor, a transmission gear, a spindle drive designed as a threaded roller screw drive, the threaded spindle of which is connected to the transmission gear and whose threaded nut is rotatably and axially displaceably filled in a cylindrical housing and connected to a pressing tool Conversion of a rotary movement of the electric motor into a linear movement of the pressing tool, a displacement sensor for determining the distance traveled by the pressing tool and a sensor for determining the pressing force of the pressing tool.
  • Such a pressing device is known from DE 100 11 859 C2, in which the threaded spindle is supported in the axial direction with respect to the housing by a flange shoulder and a tapered roller bearing.
  • the tapered roller bearing is only secured against axial displacement on the threaded spindle by means of a locking ring and can transmit practically no axial forces in the pulling direction. This is also not necessary in the known press-in device since only press forces are to be generated in one direction (pressure direction).
  • the invention has set itself the task of further developing an electrical pressing device of the type mentioned in such a way that pressing forces (tensile and compressive forces) can be generated, the smallest possible diameter of the cylindrical housing is aimed.
  • Another object of the invention is to provide an electrical pressing device which can be freely selected in terms of its axial position on a machine frame or the like. can be fixed. This is not possible in the known pressing device, since there the housing is provided with a fastening flange, so that the pressing device can only be fixed in a predetermined position.
  • Another object of the invention is to make the guidance of the threaded nut of the spindle drive, which is non-rotatable and axially displaceable with respect to the housing, structurally simpler.
  • the first-mentioned object of the invention is achieved by an electric pressing device with an electric motor, a transmission gear, a spindle drive designed as a thread roller screw drive, the threaded spindle of which is connected to the transmission gear and whose threaded nut is rotatably and axially displaceably guided in a cylindrical housing and connected to a pressing tool Conversion of a rotary movement of the electric motor into a linear movement of the pressing tool, a displacement sensor for determining the distance traveled by the pressing tool and a sensor for determining the pressing force of the pressing tool, wherein the pressing device is characterized in that the threaded spindle by means of a preloaded angular contact ball bearing set, the first (see ) Angular contact ball bearing for increasing tensile forces and its second angular contact ball bearing is (are) suitable for absorbing compressive forces, is mounted in the housing, the inner rings of the angular contact ball are supported with a shaft nut against one another against a shaft shoulder of the threaded spindle
  • the angular contact ball bearing set has two first and two second angular contact ball bearings.
  • the electric motor is electrically controlled and has an angle encoder on the motor shaft, with a device being provided to determine the path of the pressing tool based on the angle signals of the angle encoder, the gear ratio of the gear mechanism and the thread pitch of the spindle drive.
  • a torque sensor is arranged between an output shaft of the transmission gear and the threaded spindle.
  • the torque sensor can have a transmitter for contactless transmission of measured values.
  • the torque sensor is preferably easily accessible and interchangeable to adapt to different pressing forces. This makes it possible to largely utilize different measuring ranges of torque sensors even with different pressing forces, so that the measuring accuracy increases.
  • a lockable housing opening is expediently provided for access to the torque sensor.
  • the invention further provides that a motor brake which is in the de-energized state and released under current is arranged on the motor shaft. This ensures that movement of the pressing device is prevented even in the case of a power failure in the case of a transmission that does not automatically block.
  • a spring-loaded stop is provided between the threaded nut and the housing to determine the zero position of the displacement measurement.
  • the stop can be designed as a spring-loaded ring on the threaded nut.
  • the threaded spindle preferably has a multi-start, in particular a 5-start thread.
  • the threaded nut can be fixed in an axially stepped receiving sleeve, which is guided in the housing in a rotationally fixed and axially displaceable manner.
  • the receiving sleeve is connected or forms an inner sleeve of an axial guide guide, the outer sleeve of which is non-rotatably connected to the housing.
  • the receiving sleeve can have a cylindrical receiving part of a relatively large diameter and a sleeve of smaller diameter screwed to it, forming the press ram.
  • the housing preferably has an outer cylindrical clamping surface for fixing the pressing device to a freely selectable axial clamping position.
  • a double-cone clamping set can be arranged on the clamping surface.
  • Fig. 1 shows a partially sectioned side view of a pressing device according to the invention
  • FIG. 2 shows an enlarged detail from FIG. 1 in the area of the angular contact ball bearing set
  • FIG. 3 shows an enlarged detail from FIG. 1 in the region of the axial ball recirculation guide
  • Figure 4 shows a cross-sectional view along line IN - IN in Figures 1 and 2, respectively;
  • Figure 5 shows a cross-sectional view along line N-N in Figures 1 and 3, respectively.
  • FIG. 1 shows an electrical pressing device according to the present invention in a partially sectioned side view.
  • Essential components of the pressing device are an electric motor 2 with a motor brake 6 acting on its motor shaft 4, a transmission gear 8, a torque sensor 10, an angular contact ball bearing set 12 in which a threaded spindle 14 is mounted, which together with a threaded nut 16 forms a spindle drive 66, and a receiving sleeve 18 holding the threaded nut 16, which in turn is mounted in an axial ball recirculation guide 20 which which is supported in a cylindrical housing 22, which has a cylindrical outer clamping surface 24 for fixing in a freely selectable position on a machine part 26 or the like, by means of a clamping set 28.
  • An angle encoder 30 is arranged on the motor shaft 4 as an absolute measuring value transmitter, and a resolver 32 is provided in order to evaluate the signals of the angle encoder in order to obtain a path signal.
  • the transmission ratio of the transmission gear 8 and the thread pitch of the spindle drive 66 are used in a manner known per se.
  • the motor brake 6 is designed in such a way that it engages in the de-energized state by means of springs and prevents rotation of the motor shaft, but is released when the power supply is present.
  • An input shaft 34 of the transmission gear 8 is connected to the motor shaft 4, while an output shaft 36 of the transmission gear is connected to the threaded spindle 14 and carries the torque sensor 10.
  • the torque sensor 10 is provided with a transmitter, so that measurement values can be transmitted without wire or sliding contact.
  • the torque sensor 10 is relatively easily accessible via a closable housing opening 38 and can be easily replaced, so that a torque sensor adapted to a pressing force to be achieved in a particular case can be used in each case.
  • the threaded spindle 14 is mounted in the housing 22 by means of an inclined ball bearing set designated as a whole, which in the present case has a bearing sleeve 40 and an outer guide 42 screwed to it.
  • the angular contact ball bearing set 12 in the embodiment described here consists of a total of four angular contact ball bearings, each of which can absorb the same axial and radial forces, which is indicated by load action lines 44 running at 45 ° to the longitudinal axis 50.
  • Two first angular contact ball bearings 46 are arranged to absorb tensile forces (acting to the left in FIG. 1, 2) and two second angular contact ball bearings 48 each to absorb compressive forces (acting to the right in FIG. 1, 2).
  • the inner rings of the angular contact ball bearings are clamped directly against one another against a shaft shoulder 54 of the threaded spindle by means of a shaft nut 52, while the outer rings of the angular contact ball bearings are clamped against one another against a housing shoulder 58 in a corresponding manner by means of a housing nut 56.
  • the angular contact ball bearings are manufactured in such a way that there is no more play when the shaft and housing nuts are tightened, but on the contrary, a preload of the two oppositely aligned bearing pairs 46 and 48 is present so that i. w. equally large tensile or compressive forces can be absorbed without axial play occurring.
  • the advantage of this design is that no special dimensional tolerances in the area of the bearing sleeve or the threaded spindle have to be observed, as far as the axial dimensions are concerned, since the inner and outer rings are firmly tightened with the shaft and housing nuts for a perfect, play-free Function is enough.
  • the threaded spindle 14 is provided with a five-thread section 60, the length of which is dimensioned such that the desired pressing tasks can be carried out.
  • Fastening screws 70 fix the threaded nut 16 within the receiving sleeve 18 via a fastening ring 72, whereby on the fastening ring 72 or the receiving sleeve 18, a ring 76 spring-loaded by means of compression springs 74 forms a spring-loaded stop.
  • the receiving sleeve 18 is formed from a receiving part 18a which receives the threaded nut 16 and which is of relatively large diameter and a sleeve 18b of smaller diameter which is screwed thereto and forms the press ram.
  • the sleeve 18b is mounted in an inner sleeve of the axial ball guide 20 or forms it (FIGS. 3 and 5), the outer sleeve 21 of which being fixed axially immovably in the housing or the outer guide 42 by means of retaining rings 77 and connected to it in a rotationally fixed manner by means of a key 78 is.
  • a press tool, not shown, is held at the end of the sleeve 18b.
  • the clamping set 28 has conical clamping elements with which the pressing device can be fixed on the outer guide 42 in a freely selectable axial clamping position on the machine part 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Transmission Devices (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un dispositif de presse électrique composé ; d'un moteur électrique (2) ; d'un engrenage surmultiplicateur (8) ; d'un entraînement à broche (66) se présentant sous la forme d'un entraînement à tige filetée et à roulements, dont la broche filetée (14) est reliée à l'engrenage surmultiplicateur (8) et l'écrou (16) est guidé de façon bloquée en rotation et axialement coulissante dans un boîtier cylindrique (22) et relié à un outil de presse, destiné à transformer la rotation du moteur électrique (2) en un mouvement linéaire de l'outil de presse ; d'un capteur de déplacement (30) destiné à déterminer la distance parcourue par l'outil de presse, et d'un capteur (10) destiné à déterminer la force de compression. Ladite broche (14) est logée dans le boîtier par l'intermédiaire d'un ensemble de roulements à billes à portée oblique précontraint (12), dont le premier roulement à billes à portée oblique (46) est destiné à recevoir des forces de traction et le deuxième roulement à billes à portée oblique (48) est destiné à recevoir des forces de compression. Par ailleurs, les bagues intérieures des roulements à billes à portée oblique (46, 48) sont serrées, les unes contre les autres, contre un épaulement d'arbre (54) de la broche (14) à l'aide d'un écrou d'arbre (52), et les bagues extérieures des roulements à billes à portée oblique (46, 48) sont serrées, les unes contre les autres, contre une saillie de boîtier (58) à l'aide d'un écrou de boîtier (56), de telle manière que le dispositif selon l'invention peut absorber, sans jeu axial, des forces de traction ou de compression essentiellement équivalentes.
EP03769232A 2002-11-01 2003-10-09 Dispositif de presse electrique Withdrawn EP1601522A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10251387 2002-11-01
DE2002151387 DE10251387B4 (de) 2002-11-01 2002-11-01 Elektrische Preßvorrichtung
PCT/DE2003/003338 WO2004039569A1 (fr) 2002-11-01 2003-10-09 Dispositif de presse electrique

Publications (1)

Publication Number Publication Date
EP1601522A1 true EP1601522A1 (fr) 2005-12-07

Family

ID=7715017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03769232A Withdrawn EP1601522A1 (fr) 2002-11-01 2003-10-09 Dispositif de presse electrique

Country Status (8)

Country Link
EP (1) EP1601522A1 (fr)
JP (1) JP2006504533A (fr)
KR (1) KR20050074510A (fr)
AU (1) AU2003277819A1 (fr)
BR (1) BR0315838A (fr)
CA (1) CA2504221A1 (fr)
DE (2) DE10251387B4 (fr)
WO (1) WO2004039569A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004054836B4 (de) * 2004-11-12 2009-10-01 Kosan, Ralf, Dr. Elektrische Preßvorrichtung
DE102007014714B4 (de) 2006-04-05 2022-11-10 Sew-Eurodrive Gmbh & Co Kg Spindelmotor
WO2008009299A1 (fr) * 2006-07-18 2008-01-24 Kistler Holding Ag Unité d'assemblage
CH701524A1 (de) * 2009-07-22 2011-01-31 Kistler Holding Ag Elektromechanisches Fügemodul mit Kraftaufnehmer.
JP5699617B2 (ja) * 2011-01-13 2015-04-15 新東工業株式会社 電動シリンダ及び電動シリンダシステム
DE102011101291B4 (de) * 2011-05-10 2014-01-23 Fette Compacting Gmbh Druckeinrichtung für eine Presse und Rundläuferpresse
US10744511B2 (en) * 2017-02-24 2020-08-18 Roy Walter Henderson Apparatus for processing organic products and other materials
DE102017209686A1 (de) * 2017-06-08 2018-12-13 Zf Friedrichshafen Ag Drehaktuator einer Wankstabilisierung für ein Kraftfahrzeug
CN108869677B (zh) * 2018-08-15 2020-04-21 北京中航惠通自动化技术有限公司 一种内置行星滚珠丝杠的电动推杆
JP7126734B2 (ja) * 2020-01-17 2022-08-29 第一電通株式会社 プレス装置
DE102021119258A1 (de) 2021-07-26 2023-01-26 Schaeffler Technologies AG & Co. KG Linearaktuator mit Kraftsensorik
EP4400229B1 (fr) * 2023-01-16 2024-12-11 TKR Spezialwerkzeuge GmbH Dispositif de traction et d'impression portatif

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DE3642731A1 (de) * 1986-12-13 1988-06-23 Karl Bruckner Gmbh Praezisions Abrichtrollendorn
JPH05329690A (ja) * 1992-05-29 1993-12-14 Janome Sewing Mach Co Ltd 電動プレス
JPH09308994A (ja) * 1996-05-21 1997-12-02 Janome Sewing Mach Co Ltd 携帯型電動プレス
JPH11207560A (ja) * 1998-01-29 1999-08-03 Amada Eng Center Co Ltd 一軸方向駆動装置
JP2001179491A (ja) * 1999-12-27 2001-07-03 Amada Co Ltd ボールネジ駆動装置の摩耗部位偏倚防止機構
DE10011859C2 (de) * 2000-03-10 2002-05-29 Carsten Winter Einpressvorrichtung
JP2002192385A (ja) * 2000-12-28 2002-07-10 Unisia Jecs Corp 電動式押圧装置
DE20108706U1 (de) * 2001-05-25 2001-08-09 Wilhelm Messtechnik GmbH, 73431 Aalen Presse mit einer elektrischen Antriebseinrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004039569A1 *

Also Published As

Publication number Publication date
DE20218396U1 (de) 2003-02-20
KR20050074510A (ko) 2005-07-18
DE10251387A1 (de) 2004-06-09
WO2004039569A1 (fr) 2004-05-13
AU2003277819A1 (en) 2004-05-25
BR0315838A (pt) 2005-09-27
CA2504221A1 (fr) 2004-05-13
JP2006504533A (ja) 2006-02-09
DE10251387B4 (de) 2006-04-27

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