EP0528728A1 - Vorrichtung zum Antreiben der Spindeln eines Schleiftrommel - Google Patents

Vorrichtung zum Antreiben der Spindeln eines Schleiftrommel Download PDF

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Publication number
EP0528728A1
EP0528728A1 EP92402288A EP92402288A EP0528728A1 EP 0528728 A1 EP0528728 A1 EP 0528728A1 EP 92402288 A EP92402288 A EP 92402288A EP 92402288 A EP92402288 A EP 92402288A EP 0528728 A1 EP0528728 A1 EP 0528728A1
Authority
EP
European Patent Office
Prior art keywords
drum
pinion
rotation
shaft
gear wheel
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.)
Granted
Application number
EP92402288A
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English (en)
French (fr)
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EP0528728B1 (de
Inventor
Bernard Coron
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0528728A1 publication Critical patent/EP0528728A1/de
Application granted granted Critical
Publication of EP0528728B1 publication Critical patent/EP0528728B1/de
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Expired - Lifetime 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
    • B24B31/0224—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels the workpieces being fitted on a support
    • 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
    • B24B31/0212—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels the barrels being submitted to a composite rotary movement
    • B24B31/0218—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels the barrels being submitted to a composite rotary movement the barrels are moving around two parallel axes, e.g. gyratory, planetary movement

Definitions

  • the present invention relates to a method and a device for rotating a polishing barrel, more particularly intended for the polishing of spectacle frames, watch cases and other similar metallic objects.
  • polishing of metal spectacle frames can be carried out in a homogeneous manner only by means of a polishing barrel comprising a system of pins driven in rotation around a coaxial shaft of a drum containing a load.
  • abrasive usually made of vegetable shot coated with abrasive cream; the pins are fitted with elastic pins or the like used to support the mounts inside the barrel one by one.
  • drive systems have been developed using chains, belts or the like making it possible to move the spindles and the barrel as a whole using one or more drive members.
  • the effectiveness of polishing depends mainly on the speed of movement of the metal parts through the load, also called residual speed, which is given by the difference between the speed of fall of the abrasive load inside the drum, taken at the spindles (proportional to the speed of rotation of the drum) and the tangential speed of the mounts to be polished (proportional to the speed of rotation of the spindles on themselves).
  • residual speed the speed of movement of the metal parts through the load
  • residual speed is given by the difference between the speed of fall of the abrasive load inside the drum, taken at the spindles (proportional to the speed of rotation of the drum) and the tangential speed of the mounts to be polished (proportional to the speed of rotation of the spindles on themselves).
  • the present invention aims to remedy these drawbacks by proposing a method for rotating a polishing barrel, more particularly intended for the polishing of spectacle frames, watch cases and other similar fixed metallic objects.
  • a method for rotating a polishing barrel more particularly intended for the polishing of spectacle frames, watch cases and other similar fixed metallic objects.
  • peripheral spindles of a drum closed at both ends and at the bottom of which is placed an abrasive load, this process being characterized in that said spindles are rotated after a delay time, if necessary adjustable, relative to when said drum is rotated, this time must be less than or equal to that which is necessary for balancing the load inside the drum. This balance is obtained when the drop of the load inside the drum forms a regular flow flowing smoothly.
  • the invention also provides a drive device comprising at least one main pinion around which is wound an endless chain driven by the drive member so as to rotate the drum shaft, at least one secondary gear mounted idly around this shaft and cooperating with an eccentric pinion, coaxial with a secondary shaft fixed on one of the side blanks for closing the drum, at least one return pinion, integral with the same shaft as the eccentric pinion and cooperating with a set of pinions for driving the axes of rotation of the spindles, this device being characterized in that the secondary pinion, or at least one disc of a gear directly linked to this secondary pinion, comprises at least one lateral projecting index capable of abutting against at least one fixed cleat by r contribution to the drum so as to stop the rotation of said secondary pinion and to cause the rotation of the pinion drive pinions in phase shift after the rotation of the drum.
  • the secondary shaft is driven around the main shaft, which causes the secondary pinion to rotate until its index finger abuts against the corresponding cleat; because the secondary pinion can no longer rotate, the eccentric pinion is driven on itself, which causes the rotation of the return pinion integral with the same shaft and, consequently, that of the pinion drive pinions.
  • the secondary pinion becomes free to rotate because the index which is connected to it is far from its cleat; therefore, only the drum rotates and the pins are stationary.
  • the secondary pinion is immobilized, which causes the spindles to rotate in reverse as described above.
  • the polishing barrel shown in the figures is assembled around a frame 1 comprising two similar legs 2 supporting, in the upper part, the rotation shaft 3 of a drum 4, for example of decagonal cross section, closed in both. ends by blanks 5 to contain an abrasive load 6. Assembled across the drum 4 to extend between the two blanks 5 at a certain distance from its rotation shaft 3, a number of axes 7, angularly distributed by regularly support pins 8 used, using pins or the like, to hold objects of metal to be polished.
  • This secondary shaft 16 is fixed, through bearings, to a bracket 17 integral with one of the blanks 5 for closing the drum 4, and also comprises a co-operating gear 18 by means of a secondary chain without end 19, with all of the drive pinions 20 fixed to the ends of the axes 7 of the pins 8 to allow them to rotate. It will also be noted that a certain number of ball tensioning rollers 21 are arranged between certain drive pinions 20 of the pins 8 so that the secondary chain 19 is tensioned and can drive said pinions 20 firmly.
  • the overall tension of the secondary chain 19 can be adjusted by means of the displacement of the axis of rotation of a tensioning pinion 22 along a radius of the closing blank 5 of the drum 4 on which are fixed the various gears of the system d 'training.
  • the operation of the polishing barrel would be as follows: when the drive member 12 rotates, the drive chain 10 tightens and positively drives the main pinion 9 secured to the shaft 3 of the drum 4, the latter thus starting to turn. Therefore, the bracket 17 supporting the shaft secondary 16 is rotated around the shaft 3. On the other hand, as the abrasive load 6 opposes the rotation on themselves of the pins 8 which are embedded therein at the bottom of the drum 4, also well the drive sprockets 20 of all the spindles 8 that the return sprocket 18 and the eccentric sprocket 15 cannot rotate around their axes 7 and the secondary shaft 16, respectively.
  • the secondary pinion 13 is secured to a gear wheel 23 also idly mounted on the rotation shaft 3 of the drum 4, this gear wheel 23 cooperating, via an endless auxiliary chain 24, with a second gear wheel 25, with an axis fixed relative to the frame 1.
  • This second gear wheel 25 comprises, in the variant shown in the figures , a first lateral projecting index 26 on one of its faces capable of abutting against a first stop cleat 27 arranged on said frame 1, and a second lateral projecting index 28 on its other face, capable of coming into abutment against a second cleat 29, arranged on the frame 1 in angular offset relative to said first cleat 27.
  • the speed of rotation of the spindles 8 depends solely on the gear ratios of the end gears 9 and 20 and it is proportional to the speed of rotation of the drum 4.
  • the gear wheel 25 carrying the indexes 26 and 28 is mounted idly around an axis fixed to the frame 1 which, for practical reasons of simplification, is the same as the shaft of the drive member 12 driving the main pinion 9 via the drive chain 10.
  • a polishing barrel was produced in accordance with the invention comprising ten pins 8 each supporting forty spectacle frames for a total capacity of 400 frames.
  • the drum 4 rotates at the speed of 20 revolutions / minute, while the pins 8 are driven on themselves at 47 revolutions / minute; the polishing time, with an abrasive load 7 formed of vegetable shot coated with abrasive cream, was thus able to be reduced by half (that is to say 5 hours) compared to a polishing carried out in conventional barrel for which it is not possible to '' animate pins 8 beyond a speed of 7 revolutions / minute. It is understood in particular that the efficiency of the polishing, which depends directly on the residual speed as defined above, is effectively greatly improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP92402288A 1991-08-13 1992-08-13 Vorrichtung zum Antreiben der Spindeln eines Schleiftrommel Expired - Lifetime EP0528728B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9110289A FR2680333B1 (fr) 1991-08-13 1991-08-13 Procede et dispositif pour la mise en rotation des broches d'un tonneau de polissage.
FR9110289 1991-08-13

Publications (2)

Publication Number Publication Date
EP0528728A1 true EP0528728A1 (de) 1993-02-24
EP0528728B1 EP0528728B1 (de) 1996-07-10

Family

ID=9416171

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402288A Expired - Lifetime EP0528728B1 (de) 1991-08-13 1992-08-13 Vorrichtung zum Antreiben der Spindeln eines Schleiftrommel

Country Status (4)

Country Link
EP (1) EP0528728B1 (de)
DE (1) DE69212078D1 (de)
FR (1) FR2680333B1 (de)
MA (1) MA22624A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108115540A (zh) * 2017-12-25 2018-06-05 河北金音乐器集团有限公司 抛光机及抛光设备
TWI647060B (zh) * 2018-04-30 2019-01-11 郭錫池 公轉式多轉軸研磨設備
CN111745530A (zh) * 2020-06-06 2020-10-09 傅飞 一种应用于汽车排气歧管生产加工的打磨装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111958470B (zh) * 2020-08-18 2022-04-15 苏州正永信息科技有限公司 一种通过式滚抛机及其工作方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078623A (en) * 1960-05-13 1963-02-26 William T Stanley Finishing apparatus and method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2848311B1 (fr) * 2002-12-04 2005-08-26 France Telecom Procede et dispositif de telechargement de donnees numeriques vers une memoire eloignee

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078623A (en) * 1960-05-13 1963-02-26 William T Stanley Finishing apparatus and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108115540A (zh) * 2017-12-25 2018-06-05 河北金音乐器集团有限公司 抛光机及抛光设备
TWI647060B (zh) * 2018-04-30 2019-01-11 郭錫池 公轉式多轉軸研磨設備
CN111745530A (zh) * 2020-06-06 2020-10-09 傅飞 一种应用于汽车排气歧管生产加工的打磨装置

Also Published As

Publication number Publication date
FR2680333B1 (fr) 1995-07-21
MA22624A1 (fr) 1993-04-01
DE69212078D1 (de) 1996-08-14
FR2680333A1 (fr) 1993-02-19
EP0528728B1 (de) 1996-07-10

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