EP0653973B1 - Rectifieuse a bande abrasive - Google Patents

Rectifieuse a bande abrasive Download PDF

Info

Publication number
EP0653973B1
EP0653973B1 EP93914614A EP93914614A EP0653973B1 EP 0653973 B1 EP0653973 B1 EP 0653973B1 EP 93914614 A EP93914614 A EP 93914614A EP 93914614 A EP93914614 A EP 93914614A EP 0653973 B1 EP0653973 B1 EP 0653973B1
Authority
EP
European Patent Office
Prior art keywords
belt
motor housing
box
insert plate
grinder
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
EP93914614A
Other languages
German (de)
English (en)
Other versions
EP0653973A1 (fr
Inventor
Cornelius Boeck
Rudolf Fuchs
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0653973A1 publication Critical patent/EP0653973A1/fr
Application granted granted Critical
Publication of EP0653973B1 publication Critical patent/EP0653973B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/06—Portable grinding machines, e.g. hand-guided; Accessories therefor with abrasive belts, e.g. with endless travelling belts; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/18—Accessories
    • B24B21/20—Accessories for controlling or adjusting the tracking or the tension of the grinding belt

Definitions

  • the invention is based on a belt sander according to the preamble of claim 1.
  • a belt sander is known from US-A-2 544 810. From DE 37 15 292 A1 a belt sander is known in which both the motor shaft and the driven belt roller each carry a pulley. The distance between the pulleys is determined by the design. However, the tension of the belt stretched over it cannot subsequently be corrected. If the belt is too tight, this will reduce the performance of the belt sander and can lead to premature wear on the bearings and belts. A belt that is too weakly tensioned also wears out more quickly, leads to slippage and often causes annoying loud running noises.
  • the belt sander according to the invention with the characterizing features of claim 1 has the advantage that the belt tension can be easily adjusted with the device already installed. This can be used to compensate for manufacturing tolerances on the motor housing and belt runner or the bearing of the output shaft and belt roller as well as length tolerances for the belt itself.
  • a belt sander which has a belt running box in which a grinding belt guided over belt rollers rotates, with a motor housing placed on the belt running box and preferably connectable to it by screws, and with a belt pulley and a belt for transferring the engine torque to a belt drive having the belt rollers.
  • the belt sander has means which act to adjust the distance between the belt wheels which determines the belt tension.
  • a handling extension can be reached from the outside in any position and is covered by the cover of the belt drive after adjustment.
  • FIG. 1 shows a perspective view
  • FIG. 2 shows a top view of the tape drive box with the motor housing removed
  • FIG. 3 shows a perspective view of an insert plate.
  • a hand-held belt sander has a two-part motor housing 2 made of plastic with a lower part 3 and an upper part 4 which accommodates a motor and a transmission.
  • a handle 5 with a switch 6 is molded onto the lower part 3.
  • a housing cap covering the switch 6 and part of the upper part 4 is removed and not shown.
  • the motor housing 2 is placed on a belt conveyor box 7 made of aluminum and screwed to it by means of screws 8. 9 with the approximately horizontal parting line between the motor housing 2 and the belt runner 7 is designated.
  • a sanding belt guided over two belt rollers 10, 11 rotates in the belt conveyor box 7.
  • One of the belt rollers 10 is connected in a rotationally fixed manner to a first toothed belt wheel 14 which projects laterally on the same axis.
  • an output shaft 15 driven by the motor 1 via the transmission is mounted in the motor housing 2, the end of which protrudes laterally and carries a second toothed pulley 16.
  • a belt 17, preferably a flat toothed belt, is stretched over both belt wheels 14, 16.
  • the belt drive 14, 16, 17 ensures the transmission of the motor power to the belt roller 10.
  • the lower part 3 has a lateral slot 18 through which a plastic insert plate 19 shown in FIGS. 2 and 3 projects with its actuating handle 20 .
  • FIG. 2 shows a top view of the upper side of the tape running case 7 facing the lower part 3.
  • the contact surfaces 21 to 23 are somewhat raised compared to the parting line 9, that is to say they protrude somewhat into the motor housing 2.
  • the support surfaces 21 to 23 are also mounted exactly opposite, but are not shown in the drawing.
  • Two of the contact surfaces 21, 22 each form an annular surface around screw holes 24 for the screws 8.
  • the third contact surface 23 lies in the line of alignment between the axes of the belt wheels 14, 16. Like the other contact surfaces 21, 22, it has only a relatively small extent on the order of a square centimeter.
  • two further screw holes 25 are shown in FIG. 2, which are also used to fasten the tape running case 7 to the motor housing 2.
  • Belt wheels 14, 16 and actuating handle 20 are covered by a cover 26 during operation.
  • the insert plate 19, which can be inserted loosely, is elongated and has a lateral arm 28 which extends towards the bearing surface 23.
  • a lateral arm 28 which extends towards the bearing surface 23.
  • elongated part there are 24 elongated holes 29 for inserting the screws 8 at the screw holes 24.
  • Three different levels 31, 32, 33 are formed along the elongated holes 29, so that the material thickness of the insert plate 19 is three different by approximately 0.2 mm assumes different values.
  • the same steps 31, 32, 33 are attached to the end of the arm 28. It can be seen from FIG. 3 that the flattest steps 31 are each further away from the actuating handle 20 than the highest steps 33.
  • the insert plate 19 is inserted so that the lowest levels 31 rest on the bearing surfaces 21 to 23.
  • the shortest distance between the motor housing 2 and the belt runner 7 can thus be fixed.
  • the push-through dimension of the belt 17 is checked before the screws 8 are finally tightened with the motor housing 2 firmly resting on the belt runner 7. If it can be pushed too hard, the insert plate 19 is pushed inward on the actuating handle 20 by one step. Then the steps 32 rest on the contact surfaces 21 to 23. If the belt tension is still too low, the insert plate 19 can be pushed in one more step. The greatest possible distance between the belt wheels 14, 16 is thus achieved.
  • the screws 8 are tightened firmly and the housing cap is placed on the upper part 4 and handle 5, with which the screws 8 are covered. Then the cover 26 is placed on the side, which covers the belt drive and the actuating handle 20. A later unintentional adjustment of the belt tension is excluded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Une rectifieuse à bande abrasive comporte un carter (2) et, au-dessous, une boîte de défilement (7) dans laquelle tourne la bande abrasive. La bande abrasive est entraînée par une courroie (17) et des poulies (14, 16). En raison des tolérances de fabrication, il faut pouvoir régler aisément la tension de la courroie sur l'appareil déjà monté. Ceci se fait par une platine d'insertion (19) qui est insérée et déplaçable dans une fente (18) entre le carter (2) et la boîte de défilement (7). La platine d'insertion (19) présente différents degrés de hauteur (31-33) qui déterminent la distance entre le carter (2) et la boîte de défilement (7) et donc la tension de la courroie.

Claims (5)

  1. Ponceuse à bande comportant un carter (7) dans lequel circule une bande abrasive (12) passant sur des cylindres de guidage (10, 11), un boîtier de moteur (2) rapporté sur le carter de circulation de bande (7), de préférence vissé à celui-ci, ainsi qu'un entraînement à courroie comportant des poulies à courroie crantée (14, 16) et une courroie (17) pour la transmission du couple moteur à l'un des cylindres (10) et lorsque la courroie (17) est montée entre le boîtier (2) du moteur et le carter de circulation de bande (7), la ponceuse comporte des moyens actifs pour régler la distance définissant la tension de la courroie, entre les poulies à courroie (14, 16),
    caractérisée en ce que
    les moyens (19) sont constitués par une plaque formant insert (19) ayant des gradins de hauteurs différentes (31-33), cette plaque étant logée de manière coulissante entre le boîtier (2) du moteur et le carter de circulation de bande (7).
  2. Ponceuse à bande selon la revendication 1,
    caractérisée en ce que
    la plaque formant insert (19) comporte des trous oblongs (29) pour le passage de vis (8).
  3. Ponceuse à bande selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le boîtier de moteur (2) et le carter de circulation de bande (7) possèdent des surfaces d'appui planes (23), opposées, dans l'alignement entre les axes des poulies à courroie (14, 16).
  4. Ponceuse à bande selon l'une des revendications précédentes,
    caractérisée en ce que les gradins (31-33) de la plaque formant insert (19) viennent de préférence en appui plusieurs fois contre les surfaces d'appui (21-23) entre le boîtier de moteur (2) et le carter de circulation de bande (7).
  5. Ponceuse à bande selon l'une des revendications précédentes,
    caractérisée en ce que
    la plaque formant insert (19) comporte une poignée d'actionnement (20) qui dépasse latéralement par rapport au boîtier de moteur (2) ou au carter de circulation de bande (7) dans la zone de l'entraînement à courroie.
EP93914614A 1992-08-08 1993-07-08 Rectifieuse a bande abrasive Expired - Lifetime EP0653973B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9210599U DE9210599U1 (de) 1992-08-08 1992-08-08 Bandschleifer
DE9210599U 1992-08-08
PCT/DE1993/000609 WO1994003308A1 (fr) 1992-08-08 1993-07-08 Rectifieuse a bande abrasive

Publications (2)

Publication Number Publication Date
EP0653973A1 EP0653973A1 (fr) 1995-05-24
EP0653973B1 true EP0653973B1 (fr) 1997-03-05

Family

ID=6882456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93914614A Expired - Lifetime EP0653973B1 (fr) 1992-08-08 1993-07-08 Rectifieuse a bande abrasive

Country Status (4)

Country Link
US (1) US5545077A (fr)
EP (1) EP0653973B1 (fr)
DE (2) DE9210599U1 (fr)
WO (1) WO1994003308A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6785300B2 (en) 1997-02-06 2004-08-31 At&T Wireless Services, Inc. Delay compensation
US6853629B2 (en) 1997-02-06 2005-02-08 Cingular Wireless Ii, Llc Method for frequency division duplex communications
US6975668B2 (en) 1997-02-24 2005-12-13 Cingular Wireless Ii, Llc Adaptive weight update method and system for a discrete multitone spread spectrum communications system
US7061969B2 (en) 1997-02-24 2006-06-13 Cingular Wireless Ii, Llc Vertical adaptive antenna array for a discrete multitone spread spectrum communication system
US7106781B2 (en) 1997-02-24 2006-09-12 Cingular Wireless Ii, Llc Highly bandwidth-efficient communications

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19544662A1 (de) * 1995-11-30 1997-06-05 Rieter Automatik Gmbh Schmelzespinnvorrichtung
US6643281B1 (en) 1998-03-05 2003-11-04 At&T Wireless Services, Inc. Synchronization preamble method for OFDM waveforms in a communications system
DE19937014A1 (de) * 1999-08-05 2001-02-08 Bosch Gmbh Robert Handbandschleifmaschine
USD508189S1 (en) * 2003-12-09 2005-08-09 Nitto Kohki Co., Ltd. Abrading machine
ES2297339T3 (es) * 2004-06-07 2008-05-01 Black & Decker Inc. Lijadora de cinta.
DE102007004521A1 (de) * 2007-01-24 2008-07-31 Thyssenkrupp Presta Steertec Gmbh Elektrische Servolenkung mit Riemenantrieb
US20080194187A1 (en) * 2007-02-08 2008-08-14 Alto U.S. Inc. Elastic drive belt assembly
USD874205S1 (en) * 2018-03-27 2020-02-04 Gideon Williams Duvall Beverage brewing machine external surface belt configuration

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544810A (en) * 1948-04-30 1951-03-13 Edwin J Strandberg Sanding and polishing attachment for electric handsaw supporting and driving units
US2576745A (en) * 1949-09-30 1951-11-27 Howard L Auten Machine for buffing, sanding, and the like
AT172967B (de) * 1950-02-18 1952-11-10 Elviro Lombardi Handschliefmaschine für ebene und gewölbte Oberflächen, insbesondere für die Bearbeitung von Holz
US4334390A (en) * 1980-09-24 1982-06-15 The Singer Company Belt sander
US4642943A (en) * 1985-11-21 1987-02-17 Taylor Jr Joseph R Belt abrading apparatus and method
US5185963A (en) * 1992-04-08 1993-02-16 Timesavers, Inc. Pivotal arm belt loading device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6785300B2 (en) 1997-02-06 2004-08-31 At&T Wireless Services, Inc. Delay compensation
US6853629B2 (en) 1997-02-06 2005-02-08 Cingular Wireless Ii, Llc Method for frequency division duplex communications
US7460561B2 (en) 1997-02-06 2008-12-02 Clearwire Corporation Delay compensation
US7983217B2 (en) 1997-02-06 2011-07-19 At&T Mobility Ii Llc Method for frequency division duplex communications
US8305990B2 (en) 1997-02-06 2012-11-06 At&T Mobility Ii Llc Method for frequency division duplex communications
US8693432B2 (en) 1997-02-06 2014-04-08 At&T Mobility Ii Llc Method for frequency division duplex communications
US9088388B2 (en) 1997-02-06 2015-07-21 At&T Mobility Ii Llc Method for frequency division duplex communications
US6975668B2 (en) 1997-02-24 2005-12-13 Cingular Wireless Ii, Llc Adaptive weight update method and system for a discrete multitone spread spectrum communications system
US7061969B2 (en) 1997-02-24 2006-06-13 Cingular Wireless Ii, Llc Vertical adaptive antenna array for a discrete multitone spread spectrum communication system
US7106781B2 (en) 1997-02-24 2006-09-12 Cingular Wireless Ii, Llc Highly bandwidth-efficient communications
US7149238B2 (en) 1997-02-24 2006-12-12 Cingular Wireless Ii, Llc Highly bandwidth-efficient communications

Also Published As

Publication number Publication date
US5545077A (en) 1996-08-13
DE59305655D1 (de) 1997-04-10
WO1994003308A1 (fr) 1994-02-17
DE9210599U1 (de) 1993-12-09
EP0653973A1 (fr) 1995-05-24

Similar Documents

Publication Publication Date Title
EP0653973B1 (fr) Rectifieuse a bande abrasive
DE69409778T2 (de) An ihrem Ende polierte Steckerhülse und ihr Herstellungsverfahren
DE69130864T2 (de) Schleifmaschine mit schwingenden platte und schleifmittel
EP0820838A1 (fr) Ponçeuse à plateau excentrique
CA1179239A (fr) Dispositif d'alignement et d'assise pour poulie- guide de scie a ruban
US4346536A (en) Tilting arbor belt sander
DE19914956C2 (de) Elektromotorisch antreibbares Schleifgerät
DE19704110B4 (de) Handbandschleifer
DE3921003A1 (de) Handbandschleifmaschine
DE3025797A1 (de) Handwerkzeugmaschine mit einer einstellvorrichtung fuer das werkzeug
DE19807439A1 (de) Handwerkzeugmaschine, insbesondere Winkelschleifer
EP1687119A1 (fr) Outil de pon age a main
DE2639404C2 (de) Vorrichtung zum Befestigen eines Teils auf einem um eine Riemenscheibe laufenden endlosen flachen Riemen
DE2435591B2 (de) Handschleifmaschine
DE3234551A1 (de) Naehmaschine
DE2903962A1 (de) Vorrichtung zum planschleifen ebener flaechen
DE3912493A1 (de) Stelleinrichtung fuer ein reibradgetriebe
DE19934352A1 (de) Kettensäge
DE2941353C2 (de) Handbandschleifmaschine mit einer Abhebeeinrichtung
DE3020393A1 (de) Vorrichtung zum bandschleifen
DE2428610A1 (de) Spanneinrichtung fuer die loesbare befestigung von heimwerkervorsatzgeraeten am spindelhals einer handbohrmaschine
DE4314985C2 (de) Verstellvorrichtung zum Spannen eines Treibriemens
DE9412558U1 (de) Tragbare motorgetriebene Trennwerkzeugmaschine
DE3823392A1 (de) Transportables bandschleifgeraet
DE3644389A1 (de) Bandschleifer

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: 19950308

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE GB IT LI

17Q First examination report despatched

Effective date: 19951229

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE GB IT LI

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCINTILLA AG, DIREKTION

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59305655

Country of ref document: DE

Date of ref document: 19970410

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970509

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20030723

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090724

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090918

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090727

Year of fee payment: 17

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100708

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110201

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59305655

Country of ref document: DE

Effective date: 20110201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100708

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100708