EP0933165A2 - Spindle für Schleifbandstreifen und Vorrichtung um denselben durch einen neuen Streifen auszutauschen - Google Patents

Spindle für Schleifbandstreifen und Vorrichtung um denselben durch einen neuen Streifen auszutauschen Download PDF

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Publication number
EP0933165A2
EP0933165A2 EP99660014A EP99660014A EP0933165A2 EP 0933165 A2 EP0933165 A2 EP 0933165A2 EP 99660014 A EP99660014 A EP 99660014A EP 99660014 A EP99660014 A EP 99660014A EP 0933165 A2 EP0933165 A2 EP 0933165A2
Authority
EP
European Patent Office
Prior art keywords
spindle
abrasive band
folding
slot
advantageously
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
EP99660014A
Other languages
English (en)
French (fr)
Other versions
EP0933165B1 (de
EP0933165A3 (de
Inventor
Hannu Pennanen
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.)
PULMEK Oy
Original Assignee
PULMEK Oy
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 PULMEK Oy filed Critical PULMEK Oy
Publication of EP0933165A2 publication Critical patent/EP0933165A2/de
Publication of EP0933165A3 publication Critical patent/EP0933165A3/de
Application granted granted Critical
Publication of EP0933165B1 publication Critical patent/EP0933165B1/de
Anticipated expiration legal-status Critical
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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • 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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/08—Honing tools

Definitions

  • This invention relates to a spindle for an abrasive band stripe and, in particular, to a spindle with a curved, advantageously circular cross-section, and which elongated spindle has in its end an axial slot to receive the double-folded, transversal abrasive band.
  • this invention relates to an apparatus to double-fold the abrasive band, cut to desired lenght, the abrasive surface outwards, and to insert this transversally to the slot of said spindle, replacing the used abrasive band taken away from the slot.
  • the spindles of said type with axial slots in the end to receive a double-folded abrasive band, the abrasive surface turned outwards, and it has been possible to fix the spindle e.g. to the socket of a boring machine enabling it to hone holes, orifices and other narrow and inconvenient spots.
  • the length of the abrasive band is selected in accordance with the size of the hole, orifice or cavity to be honed.
  • the abrasive band will wear relatively fast and then it has to be replaced, e.g. by removing the spindle from its socket and by replacing it with another having an unused abrasive band.
  • the used abrasive band has to be removed from the removed spindle and an unused abrasive band has to be first folded and then inserted to the slot. Previously, this has been done manually, and the aim of the present invention is to automate the replacement of the abrasive band in the spindles of said type.
  • the slot in the end of the spindle can be directed so that it is at the same level with the double-folded abrasive band intended to be inserted in it; this is achieved by forming to the advantageously round surface, with curvedcross-section, a level surface that will finally come against the guiding surface, after the spindle has freely rotated or rolled along this external guiding surface, stopping the rotating movement of the spindle, despite the fact that the spindle is still sliding along said level surface to the installing point of the abrasive band.
  • the level surface and the slot are advantageously parallel and, in order to accelerate directing, the spindle has advantageously two parallel level surfaces on its opposite sides.
  • the curved and advantageously round surface is advantageously roughened to ensure that the spindle will rotate freely or will roll along the said external guiding surface until the level surface on it meets the guiding surface.
  • the level surface is not roughened, as its aim is to slide along the smooth guiding surface.
  • a spindle in accordance with the invention enables the replacement of the abrasive band being automated using an apparatus comprising a folding table to receive the abrasive band, two folding surfaces to be brought against each other along the folding table, the folding surfaces comprising parallel grooves directed away from the folding table, means to move at least one of the folding surfaces towards the other one on the folding table so that the groove pairs against each other on the folding surfaces form recesses where the spindle can be pushed when its slot is at the same level with the folding levels being against each other, and a guiding surface on the incoming path of the spindle to make the spindle roll or rotate around its longitudinal axle as its curved and advantageously round surface moves along the guiding surface, and to stop the rotating movement when the level surface in the advantageously round surface, with a curved cross-section, meets the guiding surface, whereby said guiding level continues onto the folding table directed so that the slot of the spindle is at the same level with the folding surfaces, these then pressing the double-folded abrasive
  • the special design of the spindle and the guiding surface in the apparatus in accordance with the invention ensure that the slot of the spindle is at the same level with the double-folded abrasive band folded between the folding surfaces so that the abrasive band is pushed to the slot of the spindle as the spindle is pushed to the recess formed by the guiding surfaces led against each other.
  • the chosen recess depends on the length of the abrasive band so that such a recess is selected that approximately matches with the length of the abrasive band at its centre.
  • the abrasive band is fed from the storage roll to the folding table by means of a pair of rollers and cut to desired length by a cutter placed between the pair of rollers and the folding table.
  • the cutter may be a bevelled blade protruding from the folding table, advantageously formed as an upside-down letter V and co-operating like a guillotine with the fixed edge on the opposite side of the fed abrasive band.
  • the blade is a polygonal disc the turning of which enables a new section of the blade to be used, thus lengthening its usable life and diminishing its need of replacement.
  • abrasive band is securely folded at a right point, at least in one of the rollers and at least in the roller which is against the smooth, against the folding table coming, side of the abrasive band, comprises a central, low, and with a spike-like cross-section, advantageously uniform ridge, parallel with the roller periphery, to form a crease line in the longitudinal middle line of the abrasive band.
  • the removal of the used abrasive band from the slot of the spindle can also be automated by providing the apparatus in accordance with the present invention, with means to remove the abrasive band from the slot of the spindle before replacing it with a new one.
  • This separating means is advantageously situated in the beginning of the guiding surface, a little above the slot of the spindle, moving along the guiding surface, and beside the path of the spindle a gap opened towards it and within which the spindle fits, whereby at least the beginning end of the guiding surface is laterally movable against the force of a spring in order to force the spindle into said gap.
  • the abrasive band 2 is drawn, as shown in Fig. 2, from the abrasive band storage roll 1 to the guiding groove 3 above which a rotatable roller 4 is fixed, supported by a rod 7 turning around a horizontally fitted transversal axle 6, and under it a counter-roller 5 which rollers 4 and 5 form between themselves a nip at the level of the guiding groove 3 by means of which the abrasive band 2 is drawn from the storage roll 1 to feed the stored band to the folding table 14, arranged as an extension to the guiding groove 3, via the cutting guide 10 fitted between the guiding groove 3 and the folding table 14.
  • Fig. 3 shows that on the periphery of the lower counter-roller 5 there is a low ridge 8, positioned centrally and parallel with the roller periphery, with a spike-like cross-section, by means which a crease line is formed on the smooth lower surface of the abrasive band, on the longitudinal central line of the abrasive band 2.
  • the cutter 12 sliding vertically against the transversal, vertical end surface of the cutting guide 10, and, as is seen in more detail in Fig. 4, the cutter 12 is formed like a polygonal disc having on its periphery several blades, formed like upside-down letters V, the form of which corresponds to the form of the narrow slot 11 in the cutting guide 10 through which slot the pair of rollers 4, 5 feeds the abrasive band 2 to the folding table 14.
  • the cutter 12 is equipped with a piston 13 to produce the upward directed impact of the cutter 12 so that its uppermost blade is moving like a guillotine along the end surface of the cutting guide 10 and across the opening 11, cutting the abrasive band 2, fed through the opening, to an abrasive band 2' of desired length and to be left on the folding table 14.
  • a new section of the blade can be used after the wearing down of the preceding one, and in this way it is possible to significantly increase the usable life of the cutter and the intervals of replacement.
  • folding table 14 In order to enable the double-folding of the abrasive band 2' on the folding table 14, there are on this folding table 14, on both sides of the abrasive band 2', folding surfaces 15 and 17, out of which one 17 is fixed and the folding surface 15 located on the opposite side of the abrasive band 2' is, by means of its operative means 16, to be laterally moved in order to fold the abrasive band 2' and to press the already double-folded abrasive band 2' between the folding surfaces 15 and 17, as shown in more detail in Fig. 1.
  • the folding surfaces 15 and 17 comprise vertical grooves 18, with cross-sections essentially formed like semi-circles, at such a mutual distance from each other that they form, as pairs, when the folding surfaces 15 and 17 have been pressed together, recesses with circular cross-sections, as the diameter of which the double-folded abrasive band 2' between the folding surfaces 15 and 17 is functioning.
  • the grooves 18 extend to the height of the folding surfaces 15 and 17 but, at their lower ends, they are advantageously bevelled so that the folding levels 15 and 17 do not press the abrasive band 2' between them against the folding table 14.
  • Fig. 5b shows the folding levels 15 and 17 pressed together, whereby the abrasive band 2' between them has been pressed double-folded between them and the vertical grooves 18 extending to the entire height of the folding surfaces 15 and 17 forming pairs of vertical recesses with circular cross-sections.
  • the folding table is advantageously provided with a spring so that the double-folded abrasive band 2' is pushed sufficiently deep in the slot 24, as shown in more detail in Fig. 5c.
  • the folding surface 15 is moved away from the fixed folding surface 17, whereby the spindle 23 in the slot 24 of which the double-folded abrasive band 2' is, with its abrasive surfaces facing outwards, can be removed, as shown in more detail in Fig. 5d.
  • the rounded surfaces 26 of the spindle 23 are advantageously roughened so that when the spindle is led along the side of the guide 19 it rotates freely round its axle under the spring load 27, whereby the spindle 23 can be rolled round its longitudinal axle until one of the level surfaces 25 comes against the side surface of the guide 19, stopping the rotating movement of the spindle by itself, and then it slides further to the desired opening above the folding surfaces 15 and 17, still pressed together, the slot 24 being then at the same level with the double-folded abrasive band 2' between the folding surfaces 15 and 17.
  • the used abrasive band in the slot 24 of the spindle 23 can be removed from the slot by lifting the spindle 23 axially upwards, whereby the gap 22 prevents the used abrasive band from moving together with the spindle 23, after which the spindle 23 can be moved further along the guide 19 to receive the new abrasive band 2' to be installed in it.
  • the present invention can be modified within a very large range within the scope of the appended Claims.
  • the level surface or surfaces directing the slot of the spindle can be situated in the robot moving the spindle, for instance in its socket where the spindle is fixed, provided that the spindle can be fixed into the socket only in a determined position in relation to the level surface or surfaces in the socket, and that the socket is freely rotating. It is also evident that any details of the apparatus in accordance with the invention can be modified without deviating from the scope of the Claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP19990660014 1998-02-02 1999-01-26 Spindel für Schleifbandstreifen und Vorrichtung, um denselben durch einen neuen Streifen auszutauschen Expired - Lifetime EP0933165B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI980224 1998-02-02
FI980224A FI103648B (fi) 1998-02-02 1998-02-02 Kara hiomanauhaliuskaa varten ja laite hiomanauhaliuskan uusimiseksi

Publications (3)

Publication Number Publication Date
EP0933165A2 true EP0933165A2 (de) 1999-08-04
EP0933165A3 EP0933165A3 (de) 2002-08-07
EP0933165B1 EP0933165B1 (de) 2004-05-12

Family

ID=8550652

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990660014 Expired - Lifetime EP0933165B1 (de) 1998-02-02 1999-01-26 Spindel für Schleifbandstreifen und Vorrichtung, um denselben durch einen neuen Streifen auszutauschen

Country Status (3)

Country Link
EP (1) EP0933165B1 (de)
DE (1) DE69917089T2 (de)
FI (1) FI103648B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021104526B4 (de) 2021-02-25 2022-09-08 APEX Automatisierungs- & Präzisionstechnik GmbH Werkzeug mit einem Schleifbandhalter
DE102022119483A1 (de) * 2022-08-03 2024-02-08 APEX Automatisierungs- & Präzisionstechnik GmbH Verfahren sowie Anlage zum Entgraten und/oder Polieren von Werkstücken

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1039994A (fr) * 1951-07-19 1953-10-12 Ponceuse
US2749680A (en) * 1954-06-08 1956-06-12 Palley Zoltan O St Abrading tool
US3877185A (en) * 1974-06-03 1975-04-15 Edmund F Wells Abrading tool
US4536994A (en) * 1983-09-07 1985-08-27 Krebs William T Curved surface sanding device

Also Published As

Publication number Publication date
DE69917089D1 (de) 2004-06-17
FI103648B1 (fi) 1999-08-13
EP0933165B1 (de) 2004-05-12
FI980224A0 (fi) 1998-02-02
EP0933165A3 (de) 2002-08-07
FI103648B (fi) 1999-08-13
DE69917089T2 (de) 2005-05-12

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