EP1326728A1 - Dispositif et procede d'usinage d'une piece - Google Patents

Dispositif et procede d'usinage d'une piece

Info

Publication number
EP1326728A1
EP1326728A1 EP01987703A EP01987703A EP1326728A1 EP 1326728 A1 EP1326728 A1 EP 1326728A1 EP 01987703 A EP01987703 A EP 01987703A EP 01987703 A EP01987703 A EP 01987703A EP 1326728 A1 EP1326728 A1 EP 1326728A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
machining
holder
moved
brush
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Withdrawn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
EP01987703A
Other languages
German (de)
English (en)
Inventor
Babette Middendorf
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.)
TFV Terra Finanz AG
Original Assignee
TFV Terra Finanz 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
Application filed by TFV Terra Finanz AG filed Critical TFV Terra Finanz AG
Publication of EP1326728A1 publication Critical patent/EP1326728A1/fr
Withdrawn legal-status Critical Current

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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
    • B23D45/04—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock carried by a pivoted lever
    • B23D45/042—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock carried by a pivoted lever with the saw blade carried by a pivoted lever
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/06—Grinders for cutting-off
    • B24B27/065—Grinders for cutting-off the saw being mounted on a pivoting arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/10—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising assemblies of brushes

Definitions

  • the invention relates to a device for machining a workpiece, comprising a holder for the workpiece and a machining tool arranged so that it can be guided to a workpiece located in the holder.
  • the invention further relates to a method for machining a workpiece in such a device.
  • Typical processes for machining workpieces are cutting, machining and sawing workpieces.
  • soiling and residual burrs occur on the machined surfaces of the workpiece, so that the workpiece on the machining surfaces usually has to be subjected to post-processing, which typically consists of a brushing operation.
  • DE-OS 23 36 773 describes a device for reworking workpieces with a rotating brush, in which one
  • BESTATIGUNGSKOPIE Movability of the brush is provided so that the rotating brush remains in a non-disturbing end position when changing the workpiece.
  • DE-OS 24 12 403 also shows a machine which is connected to a machining machine.
  • the machine is used for deburring workpieces by means of rotating brushes, the rotating brushes being adjustable and pivotable.
  • DE-OS 27 41 970 discloses a multiple machine for several machining operations on workpieces, in which at least two different tools and at least two work stations are provided. Post-processing of the workpiece by means of a brushing device is not provided in the disclosed device.
  • DE-PS 41 13 414 shows a processing device for plate-shaped workpieces, in which a rotating polishing tool is guided in a certain way over the workpiece surface with the aid of feelers.
  • brushing therefore also represents an additional work step in the case of a mechanical design, for which the workpiece must be placed in a brushing device or the like.
  • the device accordingly contains a holder for the workpiece and a processing tool which is arranged such that it can be moved to a workpiece located in the holder.
  • the device is characterized in that it contains a bursting device which is arranged such that it can be moved it can be moved to the workpiece in the holder in order to rework the surfaces machined by the machining tool
  • the device according to the invention accordingly contains a tool for primary machining of the workpiece, the tool preferably being a tool for cutting material, for machining and / or for sawing.
  • the device also contains a holder in which the workpiece for the machining process in can be suitably positioned and fixed.
  • the device contains a bursting device which can be moved toward the workpiece for the purpose of reworking it. It is therefore possible to carry out both the actual machining and the reworking in one and the same device to carry out the brushing
  • the workpiece can remain in the holder in the meantime. This reduces the amount of work required, since the workpiece only has to be inserted into a holder once and then two machining processes are carried out on it in succession
  • the machining tool and the bursting device are preferably arranged on different sides of the holder - and thus of the workpiece - this ensures that the two tools are not in the way of one another and that they can carry out the respective machining of the workpiece from different sides without hindrance preferably provided that the machining tool and the bursting device can be moved in a common vertical plane and / or in a common plane approximately perpendicular to the workpiece length
  • the device may further include a controller for the automatic movement of the machining tool and the brushing device, this controller being designed such that when the machining tool is removed from the workpiece after the machining has been completed, the brushing device is moved toward the workpiece for reworking.
  • the holder for the workpiece is at least partially displaceable, so that the workpiece can be brought wholly or partially into a position more favorable for post-processing by the brushing device.
  • a holder is particularly advantageous when the tool separates the workpiece, with machined surfaces on each part of the workpiece that is created.
  • the parts of the workpiece are preferably moved a sufficient distance apart so that the parting surfaces are exposed.
  • Such advantageous positioning of the separating surfaces is possible with the partially displaceable design of the holder.
  • At least part of the holder designed in the last-mentioned manner is also preferably adjustable so as to compensate for wear of the brushing device.
  • the brushes With increasing use of the brushing device, the brushes shorten due to wear. To compensate for this, in order to achieve a the machining result, the brush is brought closer to the workpiece or to the surface to be machined.
  • the adjustable design of the holder it is possible to adjust the displacement of the holder accordingly, so that the workpiece is closer to the brush when the brush remains in the same position and can therefore be machined consistently well despite wear of the brushes.
  • the machining tool and the brushing device are each arranged at the end of a two-sided swivel arm, at the other end of which a movement unit engages, with the aid of which the swivel movements of the swivel arms can be carried out.
  • the movement unit is preferably a pressure cylinder, which allows a linear displacement of the end of the swivel arm.
  • the movement unit preferably contains a sensor, in particular a proximity switch, which controls the stroke movement of the movement unit and thus the swivel movement of the tool arranged at the end of the swivel arm.
  • the corresponding length ratios of the sides of the swivel arms of the machining tool and brushing device are preferably the same for both swivel arms.
  • Each of the swivel arms is divided into two sides of the swivel arm by its axis of rotation, the aspect ratio of these sides determining how much the tool at the end of one of the sides moves by a certain amount at the end of the other side when performing a lifting movement.
  • the brushing device can advantageously be designed so that it has at least one rotatable brush arranged at the end of a swivel arm, the drive motor for the brush being arranged between the swivel bearing of the two-sided swivel arm and - the other end of the swivel arm, and wherein a power transmission from the drive motor runs to the brush through the swivel arm.
  • the rotation of the brush enables the relative speed between workpiece and brush required for post-processing of the workpiece to be achieved independently of the pivoting movement of the brush device.
  • the drive motor for the brush is preferably arranged in the section of the swivel arm located beyond the swivel bearing in relation to the brushes, so that its weight does not add to the weight of the brushes, which would make the execution of the swivel movement and the design of the swivel arm more complex ,
  • the drive motor When the drive motor is arranged in the swivel bearing or in the vicinity thereof, the drive motor essentially does not take part in the swivel movement, so that it hardly influences or influences the swivel movement mechanically.
  • the drive motor is arranged outside the swivel axis, in particular if it is arranged on or at the end of the swivel arm opposite the brush, the drive motor forms a counterweight to the brush, so that it contributes positively to the static or dynamic properties of the swivel arm. For this reason, the last-mentioned arrangement of the drive motor is preferred.
  • the power transmission between the drive motor and the brush can run easily through the straight arm.
  • the swivel arm can in particular be hollow, so that it provides a protective housing for the power transmission.
  • the invention further relates to a method for machining workpieces in a device of the type described above, which is characterized in that the brushing device is moved to the workpiece while the machining tool moves away from the workpiece after completion of its machining process, and in that the brushing device Reaching the rest position of the processing tool is moved back to its own rest position.
  • the machining and post-processing operations are therefore preferably coordinated in the device according to the invention in such a way that the brushing device is simultaneously moved towards the workpiece during the removal of the machining tool from the workpiece after completion of the primary machining.
  • the brushing device thus carries out its post-processing on the workpiece while the processing tool is still on its way back to its rest position.
  • Such a closely coordinated machining sequence is possible in particular if the machining tool and the brushing device machine the workpiece from different sides, so that when the machining device is removed, the released surfaces can be directly taken over and reworked by the brushing device that is moving up.
  • the brushing device can therefore completely reach and process the entire workpiece, so that the brushing device can complete its post-processing and return to its own rest position at this time.
  • the invention further relates to a method for machining a workpiece in a device of the type mentioned above, which is characterized in that the machining tool separates the workpiece, and that the resulting parts of the workpiece are moved apart in order to allow access to the brushing device Allow dividing surfaces.
  • the parts of the workpiece are thus brought into a position in which they can be optimally processed by the brushing device. It is not necessary to move the workpiece or its parts into another device or use in another holder, so that an additional step is saved in this regard.
  • the machining tool of the device according to the invention and the brushing device be arranged on different sides of the holder and be movable in a common vertical plane or in a common plane perpendicular to the longitudinal direction of the workpiece.
  • the processing sequence takes place in such a way that the brushing device is moved to the workpiece while the processing tool moves away from the workpiece after completion of the processing operation, and that the brushing device is moved back into its own resting position after the processing tool has reached the rest position.
  • Figure 1 is a side view of an embodiment of the device according to the invention with a sawing device.
  • FIG. 2 shows a section through the brushing device and the associated swivel arm of the device according to FIG. 1;
  • FIG. 3 shows a section through one end of the swivel arm for the ⁇ brushing device in a plane perpendicular to FIG. 2;
  • FIG. 4 shows a plan view of the machine table with the holder for the workpiece of the device from FIG. 1 located thereon;
  • FIG. 5 shows an alternative embodiment of the holder with inserted workpiece in a view corresponding to FIG. 4;
  • Figure 6 is a side view of the bracket of Figure 5;
  • Fig. 7 shows an alternative embodiment of the brushing device.
  • FIG. 1 schematically shows a special embodiment of the device 100 according to the invention in a side view.
  • a plane machine table 10 can be seen in section, which serves as a mounting base for the device.
  • a swivel arm 13 is arranged so as to be rotatable about a swivel axis 16.
  • a saw blade 12 At one end of this swivel arm 13 there is a saw blade 12.
  • the other end of the swivel arm 13 is connected to a pneumatic cylinder 14, which is attached to the machine table 10.
  • a linear movement of the pneumatic cylinder enables a pivoting movement of the swivel arm 13, the saw blade 12 being able to move in particular between an upper dead center (TDC) shown in FIG.
  • TDC upper dead center
  • the bottom dead center is selected so that the saw blade 12 passes completely through a workpiece 11, for example a pipe, located on the machine table 10 in a holder (not shown in FIG. 1) and thus saws it into two parts.
  • a brush device which consists of a rotating brush 19 and a swivel arm 18, is arranged on the underside of the machine table 10 in a substantially mirror-symmetrical arrangement with respect to the swivel arm 13 and the saw blade 12.
  • the brush 19 is arranged at one end of the swivel arm 18, and the swivel arm is rotatably mounted in a swivel bearing 17.
  • a pneumatic cylinder 15 is arranged, which is attached to the machine table 10.
  • a linear movement of the pneumatic cylinder 15 enables the brush 19 to be pivoted, the brush being able to be moved between a bottom dead center UT shown in the figure as its rest position and an top dead center as its working position.
  • the top dead center is such that when it is reached the brush 19 has passed through an opening in the machine table 10 and is machining the cut surfaces of the workpiece 11.
  • the stroke of the brush 19 can therefore be automatically adjusted by the proximity switch of the pneumatic cylinder.
  • FIG. 2 shows the swivel arm 18 and the brush 19 of the device according to FIG. 1 in a longitudinal section. It can be seen that the brush consists of two cup brushes, which are directed back to back on opposite sides.
  • a drive motor 25 is arranged displaceably.
  • the output shaft 24 of the motor 25 extends into the swivel arm 18, which is hollow as a housing, and has a sprocket 26 there.
  • a chain 27 is placed over the chain wheel 26 and runs through the entire swivel arm 18 over the axis of rotation 23 of the swivel bearing 17 to a pinion 20 which is arranged on an output shaft 22 which carries the brush 19.
  • the bearing of the output shaft 22 is covered from the outside by a bearing plate 21.
  • the rotation of the motor 25 can thus be transmitted to the brush 19 via the chain 27 running in a protected manner in the housing 18, the motor 25 advantageously forming a counterweight to the weight of the brush 19.
  • the arrangement of the brush 19 and the motor 25 on two sides of the pivot bearing 17 also compensate each other for the angular momentum generated during the self-rotation.
  • the motor 25 is mounted so that it can be moved by a certain amount in the direction of the longitudinal axis of the swivel arm 18, in order thereby to enable the chain 27 to be re-tensioned.
  • FIG. 3 shows the end of the swivel arm 18 carrying the brush 19 in a cross section that runs perpendicular to the section of FIG. 2.
  • the pneumatic cylinder 15, which is articulated on the machine table 10, can be seen.
  • the piston of the pneumatic cylinder 15 engages in an articulated manner at the end of the swivel arm 18, so that, by extending or retracting the piston, a rotational movement of the swivel arm 18 about the end of the swivel bearing carrier 28 orderly axis of rotation 23 can take place.
  • the number 30 denotes the installation sleeve of the motor, which is movable in the elongated holes 29 in the direction of the longitudinal axis of the swivel arm 18.
  • the surface of the swivel arm 18 facing away from the pneumatic cylinder 15 has a cover 31, after the removal of which the hollow interior of the swivel axis 18 is accessible for maintenance purposes.
  • FIG. 4 shows a top view of the machine table 10, on which there is a holder for the workpiece to be machined.
  • the holder contains two fixed blocks of a clamping system 32 and two movable blocks of a clamping system 34.
  • the movable blocks of the clamping system 34 are each arranged on guide rails 35 via guide carriages 33, 38.
  • the displacement of the clamping system 34 along the guide rails 35 can be effected, for example, via a pneumatic cylinder 37. In this way, it is possible to move the clamping system 34 via the guide carriages 33, 38 along the guide rails 35 in the directions shown by the double arrow.
  • displaceable stops 36 are arranged, by means of whose displacement the stroke of the clamping system 34 can be adapted to wear of the brushes.
  • a holder (shown from the left in relation to the figure) can be clamped between the clamping systems 32 and 34 with the holder shown in FIG. 4 when they move towards one another (perpendicular to the double arrow direction).
  • the workpiece can then be separated into two parts in the position of the movable clamping system 34 shown in FIG. 4 in the middle between the two clamping systems 32 and 34.
  • One of the parts (feed) is held by the rigid clamping system 32 and the other of the parts (section) by the movable clamping system 34. This means that the last-mentioned part of the workpiece can be moved in the direction of the double arrow with the aid of the clamping system 34. This separates the two parts of the workpiece moved so that the cut surfaces are accessible for processing by the burst device
  • the displacement of the movable clamping system 34 ends at the stops 36.
  • these stops 36 By adjusting these stops 36 by the user of the device, it can thus be determined how far apart the two parts of the workpiece are.This in particular allows the device to be readjusted when the burst device is in the Wears out during use and thus shortens In this case, it can be ensured that the parts of the workpiece are moved less far apart and thus the length of the brush is still sufficient
  • FIG. 5 shows a top view similar to that of FIG. 4, of an alternative embodiment of the holder, in which the two systems 32 'and 34' of the holder are moved apart symmetrically by two pneumatic cylinders 50 along guide rods 51 (see double arrows) arises between the feed 11a and the section 11b of the workpiece, the necessary work space 39 for the brush so that it can remove the burrs 40 of the cutting process, for example
  • FIG. 6 shows a side view of the holder shown in FIG. 5, it being possible to see how the clamping system 34 'is arranged on the machine table 10 via linear guides 51 and can be moved by means of the (pneumatic) cylinder 50
  • FIG. 7 shows an alternative embodiment of the bursting device, in which two cup brushes 19 are arranged via eccentrics 52 at the two ends of a two-sided drive shaft of a motor 53.
  • the motor 53 is in turn arranged at the end of a lifting rod which is linearly displaced by a pneumatic cylinder 54 Such an arrangement can be provided as an alternative to a pivoting arrangement of the brushes 19
  • the device shown in the figures, in particular in FIGS. 1 to 4, is preferably used after the subsequent functional sequence;
  • Points 6) and 7) can also be interchanged to position the section of the workpiece closer to a slide.
  • the workpiece and section fed can be transported away from the cutting tool 12 via circular guides and (pneumatic) cylinders after the cutting process (UT).
  • the lateral travel is limited by stops that can be adjusted from the outside.
  • the brushing device After reaching the TDC, the brushing device moves back to its starting position directly under the working area of the cutting tool. The fed material and the section move back to their starting position and the clamping system is opened on both sides. The next step (cycle) can then be carried out as described above.
  • the brush 19 is preferably driven by a three-phase motor 25.
  • the power transmission from the three-phase motor to the brush is preferably carried out by a chain wheel and a chain or belt pulley and belt or similar transmission elements.
  • the working stroke of the brush is determined via the pneumatic cylinder 15.
  • the proximity switches of the cutting tool are also decisive for the stroke of the brush. With different dimensions, the operator therefore only has to adjust a proximity switch (OT).
  • the machine table 10 must have sufficiently large table recesses in order to improve the chip removal and to create the installation space for the brushing device. If necessary, the movement of the clamping system can be queried using a proximity switch.
  • the pre Thrust speed of the brush can be set separately using throttles for forward and return strokes.
  • the device according to the invention has various advantages. As an independent assembly, it is easy to maintain and can be used later. Due to the complete processing on one machine, no additional containers are required, there are no additional costs. by the operator, and the entire system has a small footprint. Since the working area (AB) of the brush is the same as the working area of the saw, existing control signals can be processed.
  • the device can be used universally, since the end points of the work paths are queried for each linearly moving cutting machine (upper + lower or front + rear dead center). By overlapping the return stroke of the tool with the working stroke of the brush, the cycle time can be shortened.
  • the device is user-friendly, since different workpiece lengths can be processed without having to set up again, because the cutting and brushing process always take place in the same position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

L'invention concerne un dispositif d'usinage de pièces (11), en particulier pour le sciage d'une pièce à la scie circulaire (12), comprenant un dispositif à brosse (19) monté mobile de telle façon qu'il puisse être déplacé, une fois traité par la pièce d'usinage (12), vers la pièce (11) monté dans un support. En particulier, l'outil d'usinage (12) et le dispositif à brosse (19) sont montés mobiles sur des bras pivotants, de manière à pivoter sur différents côtés d'une table (10) de la machine, le mouvement de pivotement étant produit par des cylindres (pneumatiques) (14, 15). Pour obtenir des temps de cadence courts, le dispositif à brosse (19) est déplacé par rapport à la pièce (11), pendant que l'outil d'usinage (12) s'éloigne une fois l'usinage terminé. Dans le cas d'une pièce en deux parties (11), les parties sont, avant brossage, déplacées et séparées l'une de l'autre, de préférence par une partie du support coulissant.
EP01987703A 2000-10-19 2001-10-11 Dispositif et procede d'usinage d'une piece Withdrawn EP1326728A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2000152055 DE10052055A1 (de) 2000-10-19 2000-10-19 Vorrichtung und Verfahren zum Bearbeiten eines Werkstücks
DE10052055 2000-10-19
PCT/EP2001/011766 WO2002032609A1 (fr) 2000-10-19 2001-10-11 Dispositif et procede d'usinage d'une piece

Publications (1)

Publication Number Publication Date
EP1326728A1 true EP1326728A1 (fr) 2003-07-16

Family

ID=7660461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01987703A Withdrawn EP1326728A1 (fr) 2000-10-19 2001-10-11 Dispositif et procede d'usinage d'une piece

Country Status (4)

Country Link
EP (1) EP1326728A1 (fr)
AU (1) AU2002221668A1 (fr)
DE (1) DE10052055A1 (fr)
WO (1) WO2002032609A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008014159B4 (de) * 2008-03-14 2019-08-01 Volkswagen Ag Verfahren zur Ermittlung des Verschleißzustands einer Bürstvorrichtung
CN109290243B (zh) * 2018-09-29 2020-12-22 天长市运成电缆辅料有限公司 一种电缆回收用高效清洁装置
CN113499953B (zh) * 2021-09-09 2021-11-16 南通市海力钢绳有限公司 一种电梯钢带生产用钢丝绳涂油设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855733A (en) * 1956-12-28 1958-10-14 American Chain & Cable Co Abrasive cutting wheel method
FR2155761A5 (fr) * 1972-12-19 1973-05-18 Porier Georges
JPS5639858A (en) * 1979-09-07 1981-04-15 Aichi Steel Works Ltd Grinder for end face of steel
SE455057B (sv) * 1986-12-19 1988-06-20 Boxholms Ab Forfarande och anordning for kapning och gradning av ror
DE4439047C2 (de) * 1994-11-02 1999-11-11 Zehl Hans Joachim Verfahren und Vorrichtung zum Trennen eines Profils während des kontinuierlich in Richtung der Profilachse bewegten Profils

Non-Patent Citations (1)

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Title
See references of WO0232609A1 *

Also Published As

Publication number Publication date
AU2002221668A1 (en) 2002-04-29
WO2002032609A1 (fr) 2002-04-25
DE10052055A1 (de) 2002-05-08

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