EP1208356A1 - Roulement lineaire comportant une unite servant a effectuer une mesure - Google Patents

Roulement lineaire comportant une unite servant a effectuer une mesure

Info

Publication number
EP1208356A1
EP1208356A1 EP00964012A EP00964012A EP1208356A1 EP 1208356 A1 EP1208356 A1 EP 1208356A1 EP 00964012 A EP00964012 A EP 00964012A EP 00964012 A EP00964012 A EP 00964012A EP 1208356 A1 EP1208356 A1 EP 1208356A1
Authority
EP
European Patent Office
Prior art keywords
guide rail
scale
longitudinal groove
linear bearing
measuring
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Withdrawn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
EP00964012A
Other languages
German (de)
English (en)
Inventor
Hans-Reinhard Lambertz
Klaus Nottebaum
Klaus Baalmann
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.)
IHO Holding GmbH and Co KG
Original Assignee
INA Schaeffler KG
INA Waelzlager Schaeffler OHG
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 INA Schaeffler KG, INA Waelzlager Schaeffler OHG filed Critical INA Schaeffler KG
Publication of EP1208356A1 publication Critical patent/EP1208356A1/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Withdrawn legal-status Critical Current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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
    • 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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/005—Guide rails or tracks for a linear bearing, i.e. adapted for movement of a carriage or bearing body there along
    • 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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/08—Arrangements for covering or protecting the ways
    • F16C29/082—Arrangements for covering or protecting the ways fixed to the way
    • 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
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/34746—Linear encoders
    • G01D5/34753—Carriages; Driving or coupling means

Definitions

  • the invention relates to a linear bearing with a device for measuring the distance traveled by a movable bearing part relative to a fixed bearing part, which has a material measure arranged on the fixed bearing part and a measuring head arranged on the movable bearing part with a sensor which is used for touching or contactless scanning the material measure is provided, the fixed bearing part being designed as a guide rail and the material measure being designed as a scale, which is arranged on a longitudinal side of the guide rail, and wherein the movable bearing part is designed as a guide carriage.
  • Such a bearing makes it possible, in the case of a linear guide, to carry out the measurement of the path which one bearing part travels with respect to the other bearing part.
  • a linear bearing of the type mentioned at the outset with a displacement measuring device is known from document WO 91/16 594.
  • This bearing is designed as a roller bearing, the movable bearing part containing the measuring range with the sensor has roller circulation units and the fixed bearing part is a guide rail on which the movable bearing part is supported on supporting roles of the roller circulation units.
  • the material measure on the guide rail is inserted as an optical or magnetic scale in a groove that is located on the top of the guide rail.
  • a measuring system that works according to a capacitive or inductive measuring principle is also conceivable.
  • the measuring head of the known bearing is arranged in a separate housing which is fastened to an end face of the movable bearing part pointing in the direction of travel.
  • This embodiment has the disadvantage that a larger installation space is required for the movable bearing part in the driving or longitudinal direction than in the case of a linear bearing without a measuring device.
  • the housing requires separate seals, which results in additional material, tool and assembly costs.
  • such a housing causes additional manufacturing costs.
  • a linear bearing with a device for measuring in a first embodiment is known, the scale of which is attached to a long side of a guide rail, for example, is inserted there in a groove.
  • a scale is attached to the top of a guide rail.
  • the document DE 196 15 075 A1 shows a guide rail for a linear bearing with an open to the rail top, extending over the entire length of the guide rail and a cover tape, which has a greater width than the longitudinal groove and with bulging towards the guide rail into the longitudinal groove - is pressing.
  • Length measuring systems and linear bearings of a slide guide are usually installed separately from each other. There is still no evidence that an integrated measuring system in machine tools is significantly more reliable and economical than previous systems. Experience has shown that length measuring systems have to be replaced more often than expected, which can often be done relatively quickly as a repair service by the measuring equipment manufacturer or even in the operator's own efforts. Disassembly and reassembly of an integrated measuring device consisting of the profile rail with a non-exchangeable scale would be much more time-consuming because the corresponding slide assembly including guide rails would have to be completely removed and reinstalled with new guides.
  • Integrated measuring systems would be advantageous, the scales of which would not be glued on, but would be easy to assemble or disassemble at any time and independently of the guide rail, and which could also be installed in theoretically any length beyond rail joints.
  • the object of the invention is to implement the scale of an integrated length measuring system as a component which is stuck to the guide rail but is not glued, and which can be assembled and disassembled independently of the guide rail at the place of use.
  • the guide rail has a longitudinal groove extending over its entire length, in which the scale is held with the aid of a flexible flat strip made of steel, which is pressed into the longitudinal groove with a bulge toward the guide rail.
  • the flat strip can be made in one piece with the scale and have a larger width than the longitudinal groove of the guide rail. sen. It is also possible to insert the scale into the longitudinal groove of the guide rail and to hold it there against the flat strip on one longitudinal side, the flat strip having a greater width dimension than the corresponding remaining clear width of the longitudinal groove.
  • Either the scale consists of a bendable flat band made of steel or the flat band is designed as a clamping part for a scale and pressed into a longitudinal groove of the profile rail. Due to its resilience, the flat tape with the scale formed on it claws into the side surfaces of the longitudinal groove or the flat tape without scale claws against a side surface of the additionally inserted scale to be clamped and against a side surface of the longitudinal groove, so that a firm fit of the respective scale is guaranteed becomes.
  • the clawed flat tape scale or the clawed and clamped combination of flat tape and pressed scale can also be used as a masking tape in an additional function.
  • the fixed scales described above can also extend beyond the joints of multi-piece guide rails, so that larger measuring lengths are formed beyond the maximum production lengths of the guide rails.
  • FIG. 1 shows a known linear bearing in a perspective view, the bearing area and the measuring area being broken up;
  • FIG. 2 shows a further known linear bearing in a plan view
  • FIG. 3 shows a perspective view of the guide rail of a linear bearing according to the invention, in the longitudinal groove of which is rectangular in cross section, a scale-flat belt unit is pressed;
  • Figure 4 shows an enlarged section of the end region of the
  • FIG. 5 shows a cross section through the guide rail of a linear bearing according to the invention, in the longitudinal groove of which is rectangular in cross section, a scale is used, which is held by a flat band pressed in there.
  • FIG. 1 which contains a guide rail 1, a guide carriage 2 encompassing it and roller circulations 3, by means of which the guide carriage is supported on the guide rail 1 in a longitudinally displaceable manner, there is a measuring head 4 in a separate housing 5 which is attached to the Guide carriage 2 is screwed on the end face, thereby increasing the overall length of the guide carriage 2 provided with the measuring device.
  • the measuring head 4 moves along a scale 6, which is attached to a longitudinal side of the guide rail 1, for example, is inserted there in a groove.
  • the guide carriage 8 surrounding the guide rail 7 has a continuous central groove 9 in which the measuring head 10 is accommodated. It is located in the immediate vicinity of a scale 11 which is attached to the top of the guide rail 7. During the movement of the carriage 8 along the guide rail 7, the measuring head 10 therefore scans the scale 11 without contact and receives from it its measured values, which it forwards via electrical cable 12 to an evaluation station as electrical signals.
  • the guide carriage 8 has a bore 13 which runs transversely to the guide rail 7 and via which the groove 9 is additionally opened to the outside.
  • a bearing according to the invention has a flat strip 14, which consists of a resilient strip material made of steel. It is inserted in a longitudinal groove 15 of a guide rail 16.
  • the resilient force mechanism comes about through the material's own elastic spring.
  • the longitudinal groove 15 starts from an upper side 17 of the rail and has a somewhat smaller width than the flat strip 14. This had to bulge out towards the guide rail 16 when it was pressed into the longitudinal groove 15.
  • a plurality of vertical through openings 18 arranged one behind the other in the longitudinal direction of the guide rail are closed. These openings are designed as stepped bores for receiving fastening screws.
  • the flat band 14 acts on the side surfaces of the longitudinal groove 12.
  • the flat strip 14 is held in the longitudinal groove 15 of the guide rail 16.
  • the longitudinal groove 15 is rectangular in cross section.
  • the flat strip 14 is provided with a scale 19.
  • This and the flat strip form a one-piece component. So here is a pairing of a scale with a flat tape masking tape.
  • the scale can also be glued to the flat tape, for example on the underside of the masking tape. It is also possible to attach a protective tape over a scale, which does not serve as a scale, but only takes over the function of wear protection.
  • the scale 19 is fastened to the guide rail 16 by pressing the flat strip 14 into the longitudinal groove 15.
  • a scale 20 is inserted into a guide rail 23, which is a component separated from a flat belt 21.
  • the scale lies within the longitudinal groove 22 on an undercut longitudinal side and is held there by the flat band 21.
  • the flat strip 21 is made of steel, is elastic and has a larger width than the free interior of the longitudinal groove 22, which is still left after the insertion of the scale 20. Therefore, here too, the flat band 21 bulges out towards the guide rail 23 when it is pressed into the longitudinal groove 22, and fixes the scale 20 in the guide rail 23 as a result of its springback force.
  • the band that is arched after being pressed in here merely takes on the function of the mechanical holder.
  • Another band can rest on the rail surface.
  • the curved band lies deeper in the longitudinal groove and is connected to the further band.
  • the scale can now be placed anywhere in the groove space and either firmly connected to one of the other bands or even loosely or separately arranged in the groove.
  • the advantage of the invention is that, in the case of an interchangeable measuring system, this can only be installed after the guides have been installed, shortly before the machine is finished. This reduces the risk of damage to the measuring system during a long period of assembly and only protects against surprises in the detection of damage during the test run.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

L'invention concerne un roulement linéaire comportant une unité servant à mesurer le trajet parcouru par un élément de roulement mobile, par rapport un élément de roulement fixe. Cette unité présente un étalon placé sur l'élément de roulement fixe et une tête de mesure placée sur l'élément de roulement mobile et comportant un détecteur servant à balayer l'étalon, avec ou sans contact. L'élément de roulement fixe se présente sous la forme d'une glissière de guidage (16) et l'étalon sous la forme d'une règle graduée (19) placée sur un des côtés longitudinaux de la glissière de guidage (16). L'élément de roulement mobile se présente sous la forme d'un chariot de guidage. Selon l'invention, la glissière de guidage (16) présente, sur toute sa longueur, une rainure longitudinale (15) dans laquelle la règle graduée (19) est maintenue au moyen d'une bande plate flexible en acier (14), enfoncée dans la rainure longitudinale (15) de manière concave en direction de la glissière de guidage (16).
EP00964012A 1999-09-01 2000-08-11 Roulement lineaire comportant une unite servant a effectuer une mesure Withdrawn EP1208356A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1999141587 DE19941587B4 (de) 1999-09-01 1999-09-01 Linearlager mit einer Einrichtung zum Messen
DE19941587 1999-09-01
PCT/EP2000/007854 WO2001016564A1 (fr) 1999-09-01 2000-08-11 Roulement lineaire comportant une unite servant a effectuer une mesure

Publications (1)

Publication Number Publication Date
EP1208356A1 true EP1208356A1 (fr) 2002-05-29

Family

ID=7920386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00964012A Withdrawn EP1208356A1 (fr) 1999-09-01 2000-08-11 Roulement lineaire comportant une unite servant a effectuer une mesure

Country Status (3)

Country Link
EP (1) EP1208356A1 (fr)
DE (1) DE19941587B4 (fr)
WO (1) WO2001016564A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10254358B4 (de) * 2001-12-17 2005-04-14 Dr. Johannes Heidenhain Gmbh Trägerkörper für eine Positionsmessvorrichtung
DE10307882A1 (de) * 2003-02-25 2004-09-02 Ina-Schaeffler Kg Linearwälzlager
DE102004027218A1 (de) * 2004-06-03 2005-12-29 Seeger Gmbh Meßeinrichtung mit Linearführung
DE102005021345A1 (de) 2005-05-04 2006-11-09 Schaeffler Kg Linearführungseinheit mit Längenmesssystem
DE102013206351B4 (de) * 2013-04-11 2020-09-03 Ewellix AB Vorrichtung und Verfahren zum Fixieren eines Abdeckbandes in einer Längsnut einer Führungsschiene
EP2865907B1 (fr) * 2013-10-25 2017-06-28 NTN-SNR Roulements Ensemble d'entraînement linéaire
DE102018207638A1 (de) * 2018-05-16 2019-11-21 Robert Bosch Gmbh Führungswagen für eine Linearbewegungsvorrichtung, eine Linearbewegungs-vorrichtung und ein Verfahren
DE102018130985B3 (de) * 2018-10-02 2020-03-05 Schaeffler Technologies AG & Co. KG Profilschiene und Verfahren zur Herstellung einer Profilschiene für eine Linearführung
US10557504B1 (en) * 2019-01-22 2020-02-11 Hiwin Technologies Corp. Linear guideway capable of detecting abnormal circulation state
DE102019212557A1 (de) * 2019-08-22 2021-02-25 Robert Bosch Gmbh Linearwälzlager mit Wegmesssystem und Schadendetektion

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1180146A (en) * 1967-09-19 1970-02-04 English Electric Co Ltd Measuring Devices
US5007178A (en) * 1989-06-29 1991-04-16 Sears, Roebuck & Co. Measuring tape device
CH686322A5 (de) * 1990-04-25 1996-02-29 Schneeberger Ag Maschf Fuehrungsvorrichtung mit Messeinrichtung.
JPH05332358A (ja) * 1992-05-29 1993-12-14 T H K Kk 直線運動案内装置
DE4406797C2 (de) * 1994-03-02 1997-11-27 Heidenhain Gmbh Dr Johannes Positionsmeßeinrichtung
DE19526517C2 (de) * 1995-07-20 2000-08-24 Zeiss Carl Jena Gmbh Anordnung zur Befestigung einer Längenmeßeinrichtung
DE19615075A1 (de) * 1996-04-17 1997-10-23 Schaeffler Waelzlager Kg Führungsschiene für ein Linearlager
JPH1061664A (ja) * 1996-08-15 1998-03-06 Nippon Thompson Co Ltd 直動転がり案内ユニット
DE19713688B4 (de) * 1997-04-03 2009-07-30 Schaeffler Kg Wälzlager mit einer Wegmeßeinrichtung
DE19742081A1 (de) * 1997-09-24 1999-03-25 Schaeffler Waelzlager Ohg Linearlager mit einer Einrichtung zum Messen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0116564A1 *

Also Published As

Publication number Publication date
WO2001016564A1 (fr) 2001-03-08
DE19941587A1 (de) 2001-03-08
DE19941587B4 (de) 2010-06-02

Similar Documents

Publication Publication Date Title
EP1729387B1 (fr) Dispositif de fixation d'une ligne
EP0709655A2 (fr) Guidage
EP1208356A1 (fr) Roulement lineaire comportant une unite servant a effectuer une mesure
DE102016203952A1 (de) Linearführung
DE102009002197A1 (de) Befestigungseinrichtung für ein Kabel
EP0905486B1 (fr) Palier linéaire avec un dispositif de mesure
EP1982148A2 (fr) Unité de guidage linéaire équipée d'un système de mesure de longueur
EP3440368A1 (fr) Chariot de guidage à capteur de déformation sur l'élément de chemin de roulement
DE102013106470A1 (de) Vorrichtung und Verfahren zum zerstörungsfreien Prüfen einer Komponente eines Wälzlagers
EP0077318B1 (fr) Dispositif pour mesurer deux chemins de rouleaux opposés d'une installation de coulée continue
DE102012203632A1 (de) Linearbewegungsvorrichtung mit einem gesonderten Übertragungskörper zur Schmiermittelübertragung auf den beweglichen Ausleger
DE10243021A1 (de) Führungsschiene eines Linearwälzlagers
EP1880114A1 (fr) Unite de guidage lineaire comprenant un systeme de mesure de longueur
DE102017201230A1 (de) Linearbewegungsvorrichtung mit Lebensdauerüberwachung
DE102016114285B4 (de) Flanschträger zum gegenseitigen Tragen einer Stellarmatur und eines Stellantriebs und Messeinrichtung
DE102018122882A1 (de) Nachrüstbares Messsystem zur Ermitteln eines Verschleißes eines Bremsbelags einer Reibungsbremse
DE102009025875A1 (de) Vorrichtung zur Erfassung des Reibbelagverschleißes sowie Stab hierfür
DE3415164C2 (de) Gekapselte Längen- oder Winkelmeßeinrichtung
DE102007020313A1 (de) Vorrichtung zum Überwachen des Zustandes einer Schutzeinrichtung einer Maschine
DE102017223736B4 (de) Messgeräteträger zur vermessung einer verlegten schiene
DE202005002372U1 (de) Anordnung mit mehreren Messtastern
DE102012217859A1 (de) Vorrichtung und System zum Messen einer Zugkraft in einem Zugseil
EP0297251B1 (fr) Enceinte pour dispositif de mesure de positions
DE202024102339U1 (de) Linearführungsvorrichtung
DE102024107807A1 (de) Kohleverschleißtester

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020123

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: INA-SCHAEFFLER KG

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20040302

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230522