EP0168299A1 - Automatische Bandzentriervorrichtung, insbesondere für mit endlosem Schleifband versehenen Schleifer - Google Patents

Automatische Bandzentriervorrichtung, insbesondere für mit endlosem Schleifband versehenen Schleifer Download PDF

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Publication number
EP0168299A1
EP0168299A1 EP85401194A EP85401194A EP0168299A1 EP 0168299 A1 EP0168299 A1 EP 0168299A1 EP 85401194 A EP85401194 A EP 85401194A EP 85401194 A EP85401194 A EP 85401194A EP 0168299 A1 EP0168299 A1 EP 0168299A1
Authority
EP
European Patent Office
Prior art keywords
roller
strip
ramp
support means
belt
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Withdrawn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
EP85401194A
Other languages
English (en)
French (fr)
Inventor
Jean-Claude Maret
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.)
Peugeot Outillage Electrique SA
Aciers et Outillage Peugeot SA
Original Assignee
Peugeot Outillage Electrique SA
Aciers et Outillage Peugeot SA
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 Peugeot Outillage Electrique SA, Aciers et Outillage Peugeot SA filed Critical Peugeot Outillage Electrique SA
Publication of EP0168299A1 publication Critical patent/EP0168299A1/de
Withdrawn legal-status Critical Current

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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

Definitions

  • the present invention relates to belt sanders and relates more particularly to guiding and centering the abrasive belt of a sander of this type.
  • endless abrasive belt sanders comprising a first drive roller actuated by the machine motor, a second roller driven by the first, via the abrasive belt and means for tensioning the abrasive belt by action on the distance between the first roller and the second.
  • the sanders include a device acting on one edge of the belt so as to push it back and cause it to be refocused each time it comes into contact with it.
  • the invention therefore aims to create an automatic centering device which, while being extremely simple in construction, ensures effective centering of the strip.
  • an automatic centering device for an abrasive belt in particular a belt sander, said abrasive belt being mounted on a first drive roller and on a second roller disposed on support means and means for tensioning the belt.
  • the support means of the second roller are mounted oscillating about an axis parallel to the machine working surface, the generator of the second roller furthest from the first roller being inclined by relative to the axis thereof of a determined angle, a ramp carried by said support means or by said second roller being intended to cooperate with the internal face of one of the edges of said strip to ensure its recentering.
  • the belt sander shown in the drawings comprises a frame 1 provided with a handle 2 and containing in its upper part a motor, not shown, the output shaft of which carries a pulley 3 for driving ment by means of a belt 4 of a first cylindrical roller 5 supporting an endless abrasive belt 6.
  • This abrasive belt is further carried by a second roller 7 of convex shape rotatably mounted on a yoke 6 carried by a cylindrical rod 9, this rod being slidably mounted in a housing 10 formed in the lower part 11 of the frame 1 of the machine.
  • the roller 7 can also be of cylindrical shape and possibly be provided with a chamfer for engaging the abrasive belt.
  • the rod 9 is surrounded by a helical spring 12, one end of which bears against a flange 13 provided on the rod 9 and the opposite end of which comes into contact with a stop piece 14 in the form of cup disposed in the bottom of the housing 10 and in which is engaged the free end of the rod 9 in order to promote the oscillating movements of this rod.
  • the surface of the part 14 in contact with the bottom of the housing 10 is in the form of a spherical cap.
  • the axis of the rod 9 carrying the yoke or fork 8 of the curved roller 7 is offset by an angle ⁇ relative to the direction of movement of the abrasive belt 6 towards one of the sides of the yoke 8 which carries, as shown in particular in Fig.3 and 4, an inclined ramp 15 intended to cooperate with the internal face of one of the lateral edges 16 of the abrasive strip 6.
  • the angle of inclination ⁇ causes the strip to move in the direction indicated by arrow F in Fig. 2.
  • the ramp 15 came integrally with a wing of the yoke 8. It can also be formed by an inclined roller mounted to rotate on the yoke.
  • the movement of the strip is counterbalanced by the ramp 15 which comes into contact with the internal part of the strip 6 and causes the orientation of the roller 7 under the effect of the force G exerted by the strip 6 on the ramp 15, d 'an angle A of inclination with respect to the horizontal.
  • This rotation has the effect of returning the strip 6 in the opposite direction to the arrow F.
  • the angle ⁇ which it makes with the direction of movement of the strip again causes the movement of the strip towards the ramp 15 in the direction of the arrow F in FIG. 2 and the process which has just been described begins again, so that the strip remains in equilibrium in a stable position under the effect of two opposite systems.
  • the machine comprises a pusher 17 mounted on a fixed part 18 integral with the frame of the machine, this pusher being provided with a head 19 which can come into contact with the end of the ramp 15 in order to cause the inclination of the yoke 8 of which it is a part and consequently of the roller 7 so as to cause a sufficient inclination of this roller to ensure during its rotation, a lateral ejection of the abrasive belt 6.
  • the variant of the sander according to the invention shown in Fig.5 differs from the machine described with reference to Fig.1 to 4 in that its second roller 7a is of frustoconical shape with a taper directed towards the ramp 15a.
  • the wheel support rod 9A the water no longer being as in the previous case inclined relative to the direction of movement of the abrasive belt 6.
  • the effect of movement of the belt 6 towards the stop 15j L is now obtained by the taper of the frustoconical roller 7a.
  • the variant of the sander according to the invention shown in Fig.6 differs from the machines previously described in that its second roller 20 of convex shape is provided at one of its ends with a flared flange 21 of frustoconical shape which plays the role of the ramp of the previous embodiments.
  • the rim 21 has come integrally with the roller 20. It may also be constituted by a separate piece fixed to the roller 20.
  • It can also be formed by a roller coaxial with the roller 20 and mounted madly relative to the latter on the yoke 8.
  • the rest of the device is similar to those described with reference to Fig. 1 to 5 with the exception that the pusher 17 for tilting the yoke 8 acts directly on a wing of the yoke.
  • This latter variant can also be applied to a tapered roller.
  • the refocusing of the abrasive belt is ensured by extremely simple construction means. Furthermore, it will be noted that the refocusing means constituted by the ramp 15 or the rim 21 are not in contact with the abrasive part of the strip, but with a smooth internal part of the latter, which prevents their premature wear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP85401194A 1984-06-21 1985-06-14 Automatische Bandzentriervorrichtung, insbesondere für mit endlosem Schleifband versehenen Schleifer Withdrawn EP0168299A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8409783 1984-06-21
FR8409783A FR2566307B1 (fr) 1984-06-21 1984-06-21 Dispositif de centrage automatique de bande, notamment pour ponceuse a bande abrasive

Publications (1)

Publication Number Publication Date
EP0168299A1 true EP0168299A1 (de) 1986-01-15

Family

ID=9305288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401194A Withdrawn EP0168299A1 (de) 1984-06-21 1985-06-14 Automatische Bandzentriervorrichtung, insbesondere für mit endlosem Schleifband versehenen Schleifer

Country Status (2)

Country Link
EP (1) EP0168299A1 (de)
FR (1) FR2566307B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823835A1 (de) * 1988-07-14 1990-01-18 Fraunhofer Ges Forschung Bearbeitungsvorrichtung
WO1991000163A1 (de) * 1989-06-27 1991-01-10 Robert Bosch Gmbh Handbandschleifmaschine
CN102922392A (zh) * 2012-11-29 2013-02-13 无锡富岛精工有限公司 双头砂带机
CN113997182A (zh) * 2021-11-26 2022-02-01 江苏准信自动化科技股份有限公司 一种三工位自动化打磨系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4847363B2 (ja) 2007-02-09 2011-12-28 日東工器株式会社 無端ベルト式研削工具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191316756A (en) * 1914-01-21 1915-04-15 George William Pepys-Goodchild Improvements in or relating to Grinding or Sandpapering Machines.
DE602436C (de) * 1932-06-16 1934-09-08 C F Scheer & Cie G M B H Bandschleifmaschine
FR945719A (fr) * 1947-04-11 1949-05-12 Ponceuse à bande rectiligne
US3176436A (en) * 1962-01-22 1965-04-06 Wen Products Inc Electric belt sander
US3497336A (en) * 1967-11-01 1970-02-24 Mc Graw Edison Co Belt sander
US3789552A (en) * 1972-09-12 1974-02-05 Singer Co Tracking mechanism for belt sanders

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191316756A (en) * 1914-01-21 1915-04-15 George William Pepys-Goodchild Improvements in or relating to Grinding or Sandpapering Machines.
DE602436C (de) * 1932-06-16 1934-09-08 C F Scheer & Cie G M B H Bandschleifmaschine
FR945719A (fr) * 1947-04-11 1949-05-12 Ponceuse à bande rectiligne
US3176436A (en) * 1962-01-22 1965-04-06 Wen Products Inc Electric belt sander
US3497336A (en) * 1967-11-01 1970-02-24 Mc Graw Edison Co Belt sander
US3789552A (en) * 1972-09-12 1974-02-05 Singer Co Tracking mechanism for belt sanders

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823835A1 (de) * 1988-07-14 1990-01-18 Fraunhofer Ges Forschung Bearbeitungsvorrichtung
WO1991000163A1 (de) * 1989-06-27 1991-01-10 Robert Bosch Gmbh Handbandschleifmaschine
CN102922392A (zh) * 2012-11-29 2013-02-13 无锡富岛精工有限公司 双头砂带机
CN113997182A (zh) * 2021-11-26 2022-02-01 江苏准信自动化科技股份有限公司 一种三工位自动化打磨系统
CN113997182B (zh) * 2021-11-26 2022-12-16 江苏准信自动化科技股份有限公司 一种三工位自动化打磨系统

Also Published As

Publication number Publication date
FR2566307A1 (fr) 1985-12-27
FR2566307B1 (fr) 1986-10-31

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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

AK Designated contracting states

Designated state(s): CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19860314

17Q First examination report despatched

Effective date: 19870406

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19871113

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MARET, JEAN-CLAUDE