ATE64560T1 - ORBITAL DISC SANDER. - Google Patents

ORBITAL DISC SANDER.

Info

Publication number
ATE64560T1
ATE64560T1 AT88117288T AT88117288T ATE64560T1 AT E64560 T1 ATE64560 T1 AT E64560T1 AT 88117288 T AT88117288 T AT 88117288T AT 88117288 T AT88117288 T AT 88117288T AT E64560 T1 ATE64560 T1 AT E64560T1
Authority
AT
Austria
Prior art keywords
grinding disc
coupling part
disc unit
coupling
fixed
Prior art date
Application number
AT88117288T
Other languages
German (de)
Inventor
Hartmut Dipl-Ing Walter
Gerhard Dipl-Ing Fetzer
Walter Dipl-Ing Berwarth
Original Assignee
Festo Kg
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 Festo Kg filed Critical Festo Kg
Application granted granted Critical
Publication of ATE64560T1 publication Critical patent/ATE64560T1/en

Links

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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/03—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor the tool being driven in a combined movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Magnetic Record Carriers (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

In an eccentric disc grinder, the grinding disc unit (7), during the machining of the workpiece, preforms a movement revolving around the eccentric shaft (4) driving the grinding disc (8). In order to prevent the rotary speed of the grinding disc unit (7) from being able to increase up to the rotary speed of the eccentric shaft (4) during idling as a result of the friction occurring at the bearing (6) carrying the grinding disc unit (7), a magnetic or electro-magnetic coupling device with a coupling part (20) fixed to the housing and a coupling part (21) fixed to the grinding disc is arranged between the grinding disc unit (7) and the housing (3). The two coupling parts (20, 21) face one another in the axial direction. One of the coupling parts is a magnet part with a magnetic field extending to the other coupling part. This interacts with the other coupling part in such a way that a holding force is exerted on the coupling part (21) fixed to the grinding disc and is thus exerted on the grinding disc unit (7), which holding force is effective in the peripheral direction of the grinding disc unit (7). <IMAGE>
AT88117288T 1987-12-16 1988-10-18 ORBITAL DISC SANDER. ATE64560T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873742531 DE3742531A1 (en) 1987-12-16 1987-12-16 Eccentric disc grinder
EP88117288A EP0320599B1 (en) 1987-12-16 1988-10-18 Eccentric disk-grinder

Publications (1)

Publication Number Publication Date
ATE64560T1 true ATE64560T1 (en) 1991-07-15

Family

ID=6342676

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88117288T ATE64560T1 (en) 1987-12-16 1988-10-18 ORBITAL DISC SANDER.

Country Status (3)

Country Link
EP (1) EP0320599B1 (en)
AT (1) ATE64560T1 (en)
DE (2) DE3742531A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4118392B4 (en) * 1991-06-05 2010-03-18 Robert Bosch Gmbh Random Orbit Sander
GB9123502D0 (en) * 1991-11-06 1992-01-02 Black & Decker Inc Sanding apparatus
DE4206753A1 (en) * 1992-03-04 1993-09-09 Bosch Gmbh Robert Eccentric disc grinder
JP3063872B2 (en) * 1992-06-08 2000-07-12 株式会社マキタ Polishing machine
DE4233729A1 (en) * 1992-10-07 1994-04-14 Bosch Gmbh Robert Eccentric disc grinder with grinding disc brake
US5392568A (en) * 1993-12-22 1995-02-28 Black & Decker Inc. Random orbit sander having braking member
US5580302A (en) * 1994-02-28 1996-12-03 Black & Decker Inc. Random orbit sander having air directing baffle
GB9415011D0 (en) * 1994-07-26 1994-09-14 Black & Decker Inc Improved oscillating hand tool
US5595531A (en) * 1995-07-26 1997-01-21 Ryobi North America Random orbit sander having speed limiter
JP3316622B2 (en) * 1996-03-08 2002-08-19 株式会社マキタ Sanda
DE19617478B4 (en) * 1996-05-02 2006-06-29 Robert Bosch Gmbh hand grinder
DE19727700C2 (en) * 1997-06-30 2000-04-20 Kress Elektrik Gmbh & Co Eccentric disc grinder
DE19952108B4 (en) * 1999-10-29 2007-09-20 Robert Bosch Gmbh Exzentertellerschleifmaschine
DE10064664C2 (en) * 2000-12-22 2003-11-06 Hans-Peter Barthelt Devices for tearing open wallpaper or wallpaper surfaces
US7318768B2 (en) 2004-04-13 2008-01-15 Black & Decker Inc. Low profile electric sander
DE102014109904A1 (en) * 2014-07-15 2016-01-21 C. & E. Fein Gmbh Random Orbit Sander
EP3693132B1 (en) * 2019-02-08 2023-09-06 Guido Valentini Hand-held and hand-guided random orbital polishing or sanding power tool
EP3736084B1 (en) 2019-05-07 2021-03-10 Guido Valentini Hand-held power tool for sanding or polishing a workpiece

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287859A (en) * 1965-08-23 1966-11-29 Treffle J Leveque Rotatable grinding and surfacing tool
AT283942B (en) * 1968-09-06 1970-08-25 Deckel Ag Friedrich Grinding machine with a planetary rotating grinding spindle driven by an air turbine
JPS53146057A (en) * 1977-05-20 1978-12-19 Vibrac Corp Magnetic torque coupling
DE3609441A1 (en) * 1986-03-20 1987-09-24 Bosch Gmbh Robert Eccentric grinder with a device for changing the grinding movement
DE3625655C1 (en) * 1986-07-29 1988-01-07 Festo Kg Eccentric disc grinder

Also Published As

Publication number Publication date
DE3742531A1 (en) 1989-06-29
DE3863351D1 (en) 1991-07-25
EP0320599A1 (en) 1989-06-21
EP0320599B1 (en) 1991-06-19

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee