EP0734812A1 - Dispositif de polissage et procédé de polissage - Google Patents

Dispositif de polissage et procédé de polissage Download PDF

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Publication number
EP0734812A1
EP0734812A1 EP96104948A EP96104948A EP0734812A1 EP 0734812 A1 EP0734812 A1 EP 0734812A1 EP 96104948 A EP96104948 A EP 96104948A EP 96104948 A EP96104948 A EP 96104948A EP 0734812 A1 EP0734812 A1 EP 0734812A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
container
movement
abrasive
push rod
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
EP96104948A
Other languages
German (de)
English (en)
Other versions
EP0734812B1 (fr
Inventor
Wilhelm Dipl.-Ing. Eigemeier
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.)
Roto Frank AG
Original Assignee
Roto Frank AG
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
Priority claimed from DE29505491U external-priority patent/DE29505491U1/de
Priority claimed from DE29507515U external-priority patent/DE29507515U1/de
Application filed by Roto Frank AG filed Critical Roto Frank AG
Publication of EP0734812A1 publication Critical patent/EP0734812A1/fr
Application granted granted Critical
Publication of EP0734812B1 publication Critical patent/EP0734812B1/fr
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
    • 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
    • B24B31/10—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 other means for tumbling of work
    • 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
    • B24B31/003—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 whereby the workpieces are mounted on a holder and are immersed in the abrasive material

Definitions

  • the invention relates to a vibratory grinding system with a container containing an abrasive and a workpiece holding device, to which at least one workpiece can be detachably fastened to at least one rotatably mounted workpiece carrier, and to a method for vibratory grinding according to the preamble of claim 12.
  • the known slide grinding system has a container, the interior of which has a grinding means on its periphery, into which — by means of a radial movement — a workpiece held on a workpiece carrier can be introduced for the slide grinding processing.
  • the container is rotated for surface grinding.
  • the workpiece carrier can be rotated about a horizontal axis of rotation, so that machining of the workpieces on all sides is possible.
  • the position and machining time in the respective workpiece position can be adapted to the requirements by the rotary movement.
  • a corresponding drive is required to carry out the rotary movement, particularly in view of the large number of workpiece carriers that extend over the circumference of the container are evenly distributed - is relatively complicated and requires a correspondingly complex construction.
  • the invention is therefore based on the object of providing a vibratory grinding machine of the type mentioned at the outset, which is simple in construction and nevertheless permits optimum, defined machining, and a method for vibratory grinding which ensures uniform removal of the workpieces.
  • the container for inserting / removing the workpiece is open at the top, that an adjusting device for an essentially vertical relative movement between the workpiece receiving device and the container for immersing the workpiece in or pulling the workpiece out the abrasive is provided and that, by means of a control device, a defined rotational movement of the workpiece carrier in the abrasive is derived from the relative movement / relative position between the workpiece receiving device and the container.
  • the essence of the invention is therefore that a relative movement between the workpiece receiving device and the container is used to bring about a rotary movement of the workpiece carrier, so that a defined position of the workpiece is brought about.
  • the workpiece is machined in a first position for a predetermined time.
  • the invention is not limited to bringing only these two positions of the workpiece, but it is also possible that a position change occurs several times, which also includes that the workpiece is returned to a previously assumed position and so on.
  • a relative movement between the workpiece holding device and the container is already given by the fact that the workpieces are introduced into the abrasive.
  • the workpieces are thus attached to the workpiece carrier and then the above-mentioned relative movement is brought about in order to introduce the workpieces into the abrasive.
  • This relative movement which is possible by means of the adjusting device, is used according to the invention for a double purpose, namely it is used for changing the rotational position of the workpiece carriers.
  • An additional drive device which brings about the rotation of the workpiece carriers is accordingly not necessary, so that the construction of the entire surface grinding system is simplified and becomes less expensive.
  • the relative movement between the workpiece receiving device and the container can preferably be carried out in such a way that the container or upwards relative to the workpiece receiving device remaining at the same height is moved down.
  • the container it is also possible for the container to remain at the same height while the workpiece holding device moves up or down. Of course, both parts can also be moved.
  • a change in the relative position between the workpiece holding device and the container is also the subject of the invention, for example in that the container or a part of the container or a part assigned to the container changes its position relative to the workpiece holding device, as a result of which the rotary movement of the workpiece holder is then brought about.
  • the change in the relative position is understood to mean, in particular, a run-up slope or the like that causes the workpiece carrier to rotate.
  • the adjusting device interacts with the run-up slope or the like in such a way that, for example, an element scanning the run-up slope is displaced and the rotational movement of the workpiece carrier is thereby brought about.
  • the workpiece carrier is rotatably mounted about a horizontal axis. Since the container containing the abrasive is open at the top, the workpieces are introduced into or removed from the abrasive in a substantially vertical movement. The rotary movement of the workpiece carrier takes place about an essentially horizontal axis, which ensures that the ground of the container-facing workpiece surface assumes a position after the rotational movement, in which it faces away from the floor. A 180 ° turn is preferably carried out. This processing ensures an even grinding treatment so that an optimal result is achieved.
  • the workpiece surface facing the bottom of the container would be machined much more than the workpiece surface facing away from the bottom. This applies in particular to workpieces that have parallel or approximately plane-parallel surfaces, such as in the construction of fittings for door or window handles.
  • different grinding work comes about because the pressure of the surface of the workpiece facing the container bottom on the abrasive is greater than the pressure of the abrasive on the opposite side of the workpiece.
  • control device has a scanning element acting on the container, the adjustment of which takes place due to the relative movement and causes the rotary movement of the workpiece carrier.
  • the control device is actuated again, that is to say the workpiece holding device and the container change their vertical position again relative to one another in such a way that the scanning member is actuated.
  • the workpieces remain immersed in the abrasive, but carry out a rotary movement, in particular a turning movement.
  • the vibratory grinding process can then be continued or the rotary movement of the workpieces takes place during the vibratory grinding process, which means that this is not interrupted.
  • the scanning element is a displaceably mounted push rod.
  • This push rod can be moved in particular in the vertical direction.
  • the free end of the push rod preferably works with the bottom of the container or together with a counter element lying in the bottom region of the container.
  • the container has an annular abutment for the push rod end lying in the abrasive.
  • This increase in abutment prevents abrasive, which is present as an abrasive, in particular plastic or ceramic-bonded or in the form of variously shaped abrasive bodies, from reaching between the scanning surface and the free end of the push rod in such a way that the push rod is inadvertently displaced.
  • the system elevation thus always ensures that the scanning end, that is to say the push rod end, always remains in contact with the system elevation and thus a defined position of the push rod and thus the defined workpiece position is maintained.
  • the push rod has a toothing which meshes with a gear wheel which is coupled in a rotationally fixed manner to the workpiece carrier.
  • the gear wheel thus has a first position and the workpieces thus have a defined position in the abrasive. If the push rod is moved according to the invention, the gearwheel and thus the workpiece carrier are rotated in a defined manner, so that the workpieces reach the second, defined position.
  • the invention further relates to a method for vibratory grinding of at least one workpiece, which is introduced into an abrasive by means of an essentially vertical loading movement or moved out of the latter again, the workpiece carrying out a defined rotary movement in the abrasive derived from the loading movement.
  • FIG. 1 shows a vibratory grinding system 1 which has a machine frame 2 which has an adjusting device 3.
  • the adjusting device 3 carries, by means of a lifting rod 4, a container 5 which is designed as an annular container 6.
  • the inside of the ring container 6 is filled with abrasive 7.
  • the ring container 6 has two spaced-apart side walls 8 and 9 and a bottom 10.
  • the ring container 6 is open towards the top.
  • the adjusting device 3 has a drive, not shown, with which the container 5 in the direction of the double arrow shown in FIG. 1 11 can be opened or lowered vertically. It is thus possible to adjust the height of the container 5.
  • a workpiece holding device 13 is rotatably mounted on the vertical axis 12.
  • the workpiece holding device 13 can be set in rotation about the vertical axis 12 by means of a drive (not shown).
  • the workpiece receiving device 13 preferably has a carrier wheel 14, as can be seen in particular from FIGS. 2 and 3.
  • Profile tubes 15 extend from the carrier wheel 14 downwards. The profile tubes 15 are arranged distributed at a uniform angular distance over the circumference of the carrier wheel 14. As can be seen from FIG.
  • a plurality of such circular row arrangements of profile tubes 15 are fastened to the carrier wheel 14.
  • a workpiece carrier 19 is arranged, on which a workpiece 20 to be subjected to the surface grinding process (FIG. 13) can be detachably fastened. This will be discussed in more detail below.
  • FIG. 1 It can also be seen from FIG. 1 that there is an actuating device 21 between the workpiece receiving device 13 and the upper part of the machine frame 2, which actuating device 21 is raised and lowered by means of a drive 22 can.
  • the guide for this is the vertical axis 12.
  • an intermediate mounting plate 23 is assigned to each profile tube 15 of the workpiece receiving device 13, which is connected to the carrier wheel 14 and to which a cover plate 24 is fastened, which covers the upper end face of the profile tube 15 and also holds the latter.
  • the central axis 25 of each profile tube 15 runs vertically with a parallel distance to the axis of the lifting rod 4 or to the center line of the vertical axis 12.
  • the lower end of the profile tube 15 is covered by a cover plate 26.
  • This has a guide bore 27 which continues in a guide bush 28 which is connected to the cover plate 26.
  • a push rod 30 of a control device 31 is longitudinally displaceable, that is, in the direction of the central axis 25.
  • the push rod 30 For the storage of the push rod 30, two spaced-apart bearing parts 32 are arranged in the profiled tube 15 and a bearing bore 38 passes through them.
  • the push rod 30 essentially has a circular cylindrical cross section.
  • a scanning element 33 in the form of a cylindrical pin 34 is fastened to its lower end.
  • the cylindrical pin 34 has a hemispherically rounded end 35.
  • the cylindrical pin 34 passes through the guide bore 27 of the cover plate 26.
  • the upper end region 36 of the push rod 30 has a reduced diameter and passes through a guide bore 37 which passes through the cover plate 24, the intermediate mounting plate 23 and the carrier wheel 14 passes through.
  • the profiled tube 15 has two side wall regions 39 which run parallel to one another and which are adjoined on both sides by roof-like wall sections 40, so that overall there is a streamlined contour which reduces the resistance when sliding through the abrasive. In addition, this shape reduces the abrasive effect of the abrasive on the profile tube 15 (clearing effect).
  • the two bearing parts 32 have dovetail formations 41 on opposite sides which are received in corresponding dovetail guides 42 of the profiled tube 15. The two bearing parts 32 are fixed in position in the profile tube 15 by means of suitable fastening means.
  • the push rod 30 has a toothing 43 which, according to FIG.
  • the workpiece carrier shaft 44 faces a workpiece carrier shaft 44.
  • the workpiece carrier shaft 44 is supported in a transverse bore 45 of the profile tube 15.
  • a suitable guide means for example a guide screw, engages.
  • This guide screw can be screwed into a threaded bore 47 of the profile tube 15 (not shown in more detail in FIG. 6).
  • the workpiece carrier shaft 44 has an axis of rotation 48 which extends at right angles to the central axis 25 and is aligned horizontally.
  • the axial position of the workpiece carrier shaft 44 is fixed by snap rings 49 located on both sides of the profile tube 15 and suitable washers 50.
  • the two end regions of the workpiece carrier shaft 44 each form the workpiece carrier 19, which in the present exemplary embodiment is designed as a square holder, onto which the workpiece 20, namely a window handle, with its corresponding square bore can be attached.
  • a sealing sleeve 51 is arranged between the washer 50 and the wall 39 of the profile tube 15, as shown in FIG. 7-.
  • the workpiece carrier shaft 44 has a gear 52 which is connected to the former in a rotationally fixed manner, is located in the interior 29 of the profile tube 15 and meshes with the toothing 43 of the push rod 30.
  • Two blind holes 55 each start from the end face 54 of the profile tube 15 and are assigned to the respective bearing area of the workpiece carrier shaft 44 in the profile tube 15.
  • Each blind hole 55 (only one blind hole 55 is shown in FIG. 10 for the sake of simplicity) has a threaded section 56, into which a closure part 57 provided with an external thread is screwed. With the closure part 57, a helical compression spring 58 is held in the blind hole 55, which acts on a ball 59, which in the direction of the transverse bore 45 is pushed.
  • the workpiece carrier shaft 44 has a latching bore 60 on its circumference in a position diametrically opposite one another, into which a part of the circumference of the ball 59 can snap in corresponding rotational positions of the workpiece carrier shaft 44. In this way, a locking fixation of the workpiece carrier shaft 44 is formed, that is, the workpiece carrier shaft 44 can lock in a first position and - after a 180 ° rotation - can also be locked in a second position.
  • FIGS. 4 and 5 show that there is an annular abutment 61 on the bottom 10 of the container 5.
  • this is composed of partial circle sections 62 which are attached to the base 10 by means of fastening flanges 63.
  • the elevation 61 has an approximately triangular profile, the tip of the triangle pointing upwards and forming a scanning back 64.
  • the container 5 is in its lowered basic position according to FIG. 1. Furthermore, it is assumed that workpieces 20, namely window handles, are slipped onto the workpiece carriers 19, the workpiece holding device 13 being in the rest position for slipping on.
  • the carrier wheel 14 of the workpiece receiving device 13 is set in rotation about the vertical axis 12 by means of the drive (not shown).
  • the adjusting device 3 raises the ring container 6 to such an extent that the workpieces 20 are immersed in the abrasive 7, as can be seen from the illustration in FIG. 4 (for the sake of simplicity, only the position of the axis of rotation 48 is indicated, but not the workpieces 20 or the workpiece carrier 19 shown).
  • the push rod 30 In the position assumed in FIG. 4, the push rod 30 is in a lower position within the profiled tube 15, in which the rounded end 35 of the scanning element 33 currently rests on the scanning back 64 of the system elevation 61.
  • the workpiece carrier shaft 44 In this position of the push rod 30, the workpiece carrier shaft 44 has a defined angular position such that the workpiece surface 65 of the workpiece 20 faces the bottom 10 of the container 5.
  • the workpiece surface 65 preferably runs parallel to the plane of the floor 10.
  • the surface grinding treatment takes place with a predetermined machining time.
  • the adjusting device 3 is actuated again in such a way that the position shown in FIG. 5 is assumed by further lifting the ring container 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP96104948A 1995-03-31 1996-03-28 Dispositif de finissage par traínage et procédé de finissage par traínage Expired - Lifetime EP0734812B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE29505491U DE29505491U1 (de) 1995-03-31 1995-03-31 Schleifeinrichtung bei Gleitschleifverfahren
DE29505491U 1995-03-31
DE29507515U 1995-05-05
DE29507515U DE29507515U1 (de) 1995-05-05 1995-05-05 Werkstückträger mit Schwenkeinrichtung bei Gleitschleifanlagen

Publications (2)

Publication Number Publication Date
EP0734812A1 true EP0734812A1 (fr) 1996-10-02
EP0734812B1 EP0734812B1 (fr) 2000-06-14

Family

ID=26057751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96104948A Expired - Lifetime EP0734812B1 (fr) 1995-03-31 1996-03-28 Dispositif de finissage par traínage et procédé de finissage par traínage

Country Status (5)

Country Link
EP (1) EP0734812B1 (fr)
AT (1) ATE193852T1 (fr)
CZ (1) CZ289258B6 (fr)
DE (1) DE59605425D1 (fr)
HU (1) HU221526B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2929981A1 (fr) * 2014-03-31 2015-10-14 MTU Aero Engines GmbH Dispositif de retenue pour réception et support d'au moins un composant et procédé de trovalisation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10204267C1 (de) * 2002-02-02 2003-04-24 Otec Praezisionsfinish Gmbh Werkstückhalter für Schleppfinishmaschinen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915309C (de) 1948-10-02 1954-07-19 Wmf Wuerttemberg Metallwaren Verfahren und Einrichtung zum Feinbearbeiten von Werkstueckoberflaechen
EP0131141A1 (fr) * 1983-06-09 1985-01-16 Carl Kurt Walther GmbH & Co. KG Finissage à mouvement traînant et dispositif pour sa mise en oeuvre
DE9004185U1 (de) * 1990-04-10 1990-06-21 FEMUK Labortechnik GmbH, 8100 Garmisch-Partenkirchen Schleif- und Poliervorrichtung für Gleitschleif- und Polierverfahren
US5251409A (en) * 1992-06-15 1993-10-12 Outboard Marine Corporation Method of drag finishing a housing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915309C (de) 1948-10-02 1954-07-19 Wmf Wuerttemberg Metallwaren Verfahren und Einrichtung zum Feinbearbeiten von Werkstueckoberflaechen
EP0131141A1 (fr) * 1983-06-09 1985-01-16 Carl Kurt Walther GmbH & Co. KG Finissage à mouvement traînant et dispositif pour sa mise en oeuvre
DE9004185U1 (de) * 1990-04-10 1990-06-21 FEMUK Labortechnik GmbH, 8100 Garmisch-Partenkirchen Schleif- und Poliervorrichtung für Gleitschleif- und Polierverfahren
US5251409A (en) * 1992-06-15 1993-10-12 Outboard Marine Corporation Method of drag finishing a housing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2929981A1 (fr) * 2014-03-31 2015-10-14 MTU Aero Engines GmbH Dispositif de retenue pour réception et support d'au moins un composant et procédé de trovalisation

Also Published As

Publication number Publication date
CZ93096A3 (en) 1997-10-15
HUP9600845A3 (en) 2000-01-28
HU221526B (hu) 2002-11-28
CZ289258B6 (cs) 2001-12-12
ATE193852T1 (de) 2000-06-15
HUP9600845A2 (en) 1996-11-28
HU9600845D0 (en) 1996-05-28
DE59605425D1 (de) 2000-07-20
EP0734812B1 (fr) 2000-06-14

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