EP2689891A2 - Machine à deux disques pour l'usinage de surface - Google Patents

Machine à deux disques pour l'usinage de surface Download PDF

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Publication number
EP2689891A2
EP2689891A2 EP13075050.8A EP13075050A EP2689891A2 EP 2689891 A2 EP2689891 A2 EP 2689891A2 EP 13075050 A EP13075050 A EP 13075050A EP 2689891 A2 EP2689891 A2 EP 2689891A2
Authority
EP
European Patent Office
Prior art keywords
working
disc
machine frame
disk
machine
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Withdrawn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
EP13075050.8A
Other languages
German (de)
English (en)
Other versions
EP2689891A3 (fr
Inventor
Thomas Rehfeldt
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.)
FLP Microfinishing GmbH
Original Assignee
FLP Microfinishing GmbH
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 FLP Microfinishing GmbH filed Critical FLP Microfinishing GmbH
Publication of EP2689891A2 publication Critical patent/EP2689891A2/fr
Publication of EP2689891A3 publication Critical patent/EP2689891A3/fr
Withdrawn legal-status Critical Current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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
    • B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
    • B24B37/08—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for double side lapping
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/02—Frames; Beds; Carriages
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B24B7/17—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings for simultaneously grinding opposite and parallel end faces, e.g. double disc grinders

Definitions

  • the invention relates to a two-disc machine for the surface treatment of preferably flat workpieces with mutually substantially plane-parallel surfaces, wherein at least one of these surfaces is machined by means of the machine. It relates in particular to a two-disc machine for fine grinding or flat honing, for lapping or for polishing to meet the highest demands on the quality of treated surfaces.
  • two-disc machines or two-disc fine grinding machines For surface treatment of workpieces with surfaces that are plane-parallel to one another, two-disc machines or two-disc fine grinding machines, two-disc lapping machines or two-disc polishing machines are known. They have a lower rotationally driven working disk and an above, also driven by rotation upper working disk, wherein the surfaces of the working disks, by means of which on at least one inserted between the working disks workpiece, are facing each other. From the or the moving grinding wheels, an abrasive is moved, which acts on the respective surface or the surfaces of the moving with the rotor disk workpiece.
  • the abrasive used is a plurality of grains, which is referred to in this context of the "grain".
  • a bonded grain diamond grain CBN grain (cubic boron nitride), silicon grain or corundum grain are often used, which is fixed by means of a bond (for example in the form of a synthetic resin or a polymer) on the surface or working surface of a respective working disk.
  • two-disc machines have become known with a movable as part of a planetary kinematic arrangement between the working discs rotor.
  • the one or more workpieces are inserted for processing in one or in each case a breakthrough of the rotor of such a planetary kinematic arrangement.
  • a runner provided with one or more openings for receiving one or more workpieces is provided, for example, on its outer circumference with a toothing. About this toothing rolls the flat, located in the operation of the machine between the working wheels rotor disc when rotating at least one working disk on a radially inner pin ring and this concentrically surrounding radially outer pin ring, wherein at least one of the pin rings rotates.
  • the inner pin collar rotates and the outer pin ring is rigidly disposed.
  • the outer pin ring can be driven.
  • Fine grinding, lapping and polishing are high-precision working methods by means of which a very high surface quality, ie waviness and roughness of the treated surface of a workpiece in the sub-millimeter range down to a few micrometers is achieved in the processed with their help workpieces.
  • this also requires a high degree of precision in the grinding machines and their elements, in particular regarding the surface texture and stiffness of the working wheels and their vibration-free as possible drive ahead.
  • the machine parts to which the respective working disc driving shaft is mounted as rigid as possible and solid.
  • a corresponding portal based in a sense as a superstructure on a lower part of a machine frame.
  • the risk of such vibrations in designs with a C-shaped machine frame is slightly greater than in machines in gantry design.
  • a two-disk machine in gantry design is, for example, by the DE 10 2008 007 607 A1 described.
  • two-disc machines for fine grinding, lapping or polishing as described, for example, by the abovementioned document, usually comprise a metallic machine frame as well as this metal-clad elements.
  • massive training with a correspondingly high material thickness of the relevant, for example, in the case of the machine frame, for example, often made of cast iron parts, it is worked to avoid vibrations on a high degree of movement. It is also known to increase the rigidity by means of a ribbing of flat sections.
  • the object of the invention is to provide a two-disc machine for surface processing by fine grinding, lapping or polishing, in which by suitable measures a particularly low tendency to vibration of the supporting or in particular the working disks and the driving shafts storing machine parts is achieved to high-precision surface with very low To create unevenness and roughness.
  • the proposed for solving the problem two-disc machine for surface treatment has in terms of their basic structure, the usual, known from machines for fine grinding, lapping or polishing elements.
  • Components of the machine are therefore a single or multi-part machine frame, at least two drives and two rotatably driven by a respective drive via a shaft working wheels.
  • an upper working disk is arranged height-adjustable above a lower working disk whose working surface is arranged in a substantially horizontal plane.
  • the working surface of the upper working disk is arranged in a horizontal plane, wherein the working surfaces of both working disks face each other and are arranged substantially parallel.
  • the preferably circular working disks with preferably the same diameter are arranged with respect to the center of their cross-sectional areas on a common vertical axis.
  • At least one carrier disc is movable between the working discs as part of a planetary kinematic arrangement, wherein said at least one carrier disc has at least one aperture into which a workpiece to be machined is inserted.
  • the machine is designed in this form for the surface treatment of a preferably thin workpiece with two mutually plane-parallel surfaces. The surface treatment by fine grinding, lapping or polishing takes place in that an abrasive is moved by a rotating working disk through which the surface of the plane-parallel workpiece facing the respective working surface is machined.
  • the lower - is set for the machining of the workpiece in a rotary motion, in which case consequently only one surface of the workpiece, namely that of the working disk concerned, is processed. If in this case a processing of the workpiece is carried out only by means of the lower working disk, the upper, height-adjustable working disk is still moved up to the workpiece, so that this is acted upon by the upper working disk with a defined pressure for the processing at its lower working disk surface performing process becomes. With simultaneous rotation of the upper working disk both mutually plane-parallel surfaces of the workpiece are accordingly processed by fine grinding, lapping or polishing.
  • the rotational movement of the working disk or of the working disks moves an abrasive material which processes the surface or the surfaces of the workpiece.
  • the abrasive that is a corresponding grain (for example made of diamond) is bonded to the working surface or the working surfaces of the working wheels, the surface or the surfaces of the workpiece are treated by fine grinding.
  • an unbound introduced as part of an emulsion between the working wheels grain surface treatment by lapping or polishing.
  • At least a part of the machine frame namely at least the part on which the drive for the upper working disk set and driving this working disk Shaft is mounted, together with at least one of this part of the machine frame directly or indirectly supported on the ground vertical portion as a monolithic unit of a hard rock.
  • the relevant upper part of the machine frame is due to its monolithic design and the use of hard rock as a material particularly rigid and sturdy and at the same time acts vibration damping, so that even at higher speeds of the upper working disk or the driving shaft almost no vibrations occur.
  • the already mentioned planetary kinematic arrangement is preferably formed by an inner pin collar, a surrounding surrounding outer pin collar and the aforementioned at least one rotor disc, which is arranged between the pin rings.
  • the rotor disc on its outer circumference on a toothing, over which it rolls on the pin rings during operation of the machine.
  • the rotor disc can be driven while maintaining the principle of planetary kinematics but also by a cam.
  • the invention is not limited to those previously and in connection explained with the embodiment form of training their planetary kinematics, for the other, there are other possibilities for implementation.
  • the invention comprises two basic alternatives.
  • the upper part of the machine frame formed by the monolithic block of hard rock is designed in the form of a gantry.
  • the gantry consists of at least two vertical columnar sections of hard rock supporting the relevant part of the machine frame on the lower part of the machine frame and supporting it on the ground and one such columnar section monolithic, ie integral , interconnecting yoke made of hard rock.
  • the lower part of the machine frame which is fixed to the drive for the lower working disk and the driving shaft is supported, as a monolithic unit of hard rock educated.
  • the machine frame is formed integrally and in total as a monolithic block consisting of a hard rock, to which both the drive for the upper working disk and the drive for the lower working disk set as well as the shafts driving the working disks are stored.
  • the section supporting the upper part of the machine frame and the lower part of the machine frame are identical to one another, in which case said or aforementioned section - according to the understanding (hereinafter to be explained briefly) - supported upper part of the machine frame directly on the ground.
  • the section supporting the upper part of the machine frame on the ground is accordingly formed in this case by the lower part of the overall monolithic, that is, in one piece, machine frame.
  • the lower and upper part are not formed individually, but together in one piece, it is also in the second provided for the double-disc machine according to the invention alternative.
  • This is realized by forming the one-piece machine frame in the form of a C-shaped column.
  • the parts of the machine frame which consist of hard rock may be surrounded by trim parts consisting of metallic or of other materials.
  • the two-disc machine is a grinding machine with one or more workpieces in one or more apertures of a rotor receiving planetary kinematic arrangement and a machine, in which at least the upper part of the machine frame and mandatory the one or more on the ground supporting portions or even the entire machine frame monolithic (one piece) and are formed of hard rock, the former also includes the possibility that on the one hand, the upper part of the machine frame and the or him (in this case indirectly, namely the lower part of the machine frame) on the ground supporting portions and on the other hand, the lower machine part are integrally formed but separately from each other.
  • Grinding machine also designed in gantry design or with a machine frame with a C-shaped, the upper and the lower part of the machine frame in a monolithic block unifying column.
  • An immediate support of the upper part of the machine frame on the ground is given according to this or the claimed two-disc engine underlying understanding when the upper part of the machine frame supporting portion and the lower part of the machine frame are identical to each other, so the machine frame a total monolithic, that is one-piece, consisting of a hard rock unit forms.
  • its lower part forms a separate part of the machine frame.
  • the respective monolithic block that is, at least the upper part of the machine frame and the one or more integrally formed therewith, the upper machine part at the bottom supporting portions are united to form a seamless unit.
  • the monolithic training also accounts in particular made of metal connecting parts and / or elements, for example in the form of struts, angles, screws or the like, which would otherwise form a kind of bypass for mechanical vibrations, through which mechanical vibrations from one component to another Components of the machine could be transferred.
  • the two working disks made of a hard rock, such as granite in particular, which then additionally a tool-defined vibration damping is given.
  • each monolithically designed parts of the machine frame or the entire integrally formed machine frame is preferably particularly granite into consideration.
  • an arrangement is to be regarded as one piece, which consists of several detachably connected elements, whereas it is a monolithic unit, but at least one unit of optionally a plurality of interconnected, but not non-destructively detachable elements in a one-piece arrangement is.
  • the most perfect type of one-piece design is because of the lack of any possibly twisting connections and any transitions between elements, the monolithic training, as according to the invention, at least for the upper part of the machine frame, and possibly also for the lower Part of the machine frame or even for the entire, then consisting of a block of hard rock machine frame is given.
  • the upper working disk is mounted pendulum. That is, the work disk or their work surface easily swings around their basically horizontal position.
  • the working surfaces of both working wheels are to be regarded as arranged essentially parallel in principle, since the upper working disk oscillates only slightly around its basically horizontal position.
  • the machine is preferably designed so that the upper working disk with progressive processing, in the course of which sets a uniform workpiece thickness, with respect to their oscillating storage can be locked.
  • the upper working disk if it can be assumed that the surfaces of the machined workpiece are in the meantime always plane-parallel to one another, fixed in a preferably exactly horizontal position of their working surface, which of course not connected to a fixation of the working disk in terms of their continued rotation enabled is.
  • the oscillating storage of the upper working disk only to a possible development, so a not necessarily present feature. Even a rigid from the outset storage of the upper working disk is therefore considered and is therefore encompassed by claim 1.
  • the height adjustment of the upper working disk is realized according to a preferred embodiment of the proposed two-disc machine by means of a ball screw, which is driven by a torque motor for adjusting the height of the upper disc and the pressure exerted by it on the workpiece.
  • the lower working disk or its driving shaft is preferably mounted hydrostatically in relation to the desired objective of a vibration-related or vibration-poor operation of the machine by means of a precision axial bearing.
  • the proposed two-disc machine is also supplemented by a height-adjustable probe for determining the thickness of a machined workpiece.
  • the Fig. 1 shows a possible embodiment of the proposed for solving the task two-disc machine for surface processing by, for example, fine grinding.
  • the machine is shown in a sectional schematic representation in front view.
  • the two-disc machine consists essentially of a present two-part machine frame with an upper part 1 and a lower part 2, two respectively driven by a shaft 5, 6 working wheels 7, 8, namely a rotatably driven over the shaft 6 and mounted on the lower part 2 of the machine frame lower working disk 8 and arranged above it, also rotatably driven via a shaft 5 and mounted on the upper part 1 of the machine frame upper working disk 7.
  • a here due to the sectional view not to be seen protective hood there is a in the Fig. 1
  • the pin rings 13 that is, in the same horizontal plane, at least one toothed at its outer periphery, for receiving at least one with the Machine designed to be machined workpiece rotor 18 arranged (see also Fig. 3 ).
  • the upper part 1 of the machine frame which in the present case in the form of a portal with two mutually perpendicular, over the lower part of the machine frame on the ground supporting columnar sections 11, 12 and with a these pillar-shaped portions 11, 12 monolithic, that is integrally, connecting yoke 15 is designed as a granite existing monolith.
  • the drive 3 (not visible in the figure, see Fig. 2 ) fixed to the upper working disk 7 and driven by this, the working disk 7 driving shaft 5 is mounted. Due to the arrangement of the monolithic, in the example shown granite block and formed by this very rigid and motion-rigid upper part 1 of the machine frame, vibrations, as caused by the rotating upper working disk 7, largely avoided or greatly attenuated.
  • the upper working disk 7 is height adjustable. This is evidenced by the figure realized by means of a ball screw 16 which is driven by another drive, not shown here, for example in the form of a torque motor.
  • the lower working disk 8 is driven by means of the lower, fixed to the lower part 2 of the machine part drive 4 via the shaft 6.
  • the shaft 6 is presently designed as a hollow shaft.
  • a further shaft 21 is guided, via which the inner pin ring 13 is driven as part of the planetary kinematic arrangement by means of another, also fixed to the lower part 2 of the machine frame drive 22.
  • a height-adjustable (not shown in detail) probe 17 is arranged, with which the thickness of machined workpieces is measured for control purposes.
  • the lower part 2 of the machine frame can be realized by a monolith consisting of a hard rock.
  • the Fig. 2 shows the in the Fig. 1 shown machine again in a side view.
  • the fixed to the upper portal-shaped part 1 of the machine frame namely laterally fixed to this drive 3 for the upper working disk 7 and the ball screw 16 can be seen.
  • the Fig. 3 merely serves to explain again the principle of a planetary kinematic arrangement which is known in principle.
  • the rotor disc 18 moving during operation of the machine between the working disks 7, 8 can be seen in a plan view. This, as also clearly visible, has a breakthrough 19 in which the workpiece to be machined with respect to its surfaces is inserted.
  • the planetary kinematic arrangement is formed by the geared on its outer circumference rotor 18, the driven inner pin ring 13 and the concentrically arranged rigid outer pin ring 14.
  • the rotor disc 18 may also have a plurality of openings 19 and thus possibly accommodate several workpieces.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP13075050.8A 2012-07-25 2013-07-25 Machine à deux disques pour l'usinage de surface Withdrawn EP2689891A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012106777.5A DE102012106777A1 (de) 2012-07-25 2012-07-25 Zweischeibenmaschine zur Oberflächenbearbeitung

Publications (2)

Publication Number Publication Date
EP2689891A2 true EP2689891A2 (fr) 2014-01-29
EP2689891A3 EP2689891A3 (fr) 2016-11-30

Family

ID=48951307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13075050.8A Withdrawn EP2689891A3 (fr) 2012-07-25 2013-07-25 Machine à deux disques pour l'usinage de surface

Country Status (2)

Country Link
EP (1) EP2689891A3 (fr)
DE (1) DE102012106777A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104999364A (zh) * 2015-07-07 2015-10-28 成都亨通兆业精密机械有限公司 一种精密圆柱形零件的加工方法
DE102017121692A1 (de) 2017-09-19 2019-03-21 Supfina Grieshaber Gmbh & Co. Kg Feinbearbeitungsmaschine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2603217B1 (fr) * 1986-08-28 1990-12-28 Primat Didier Procede de fabrication d'un bati de support et de guidage bidirectionnel.
DE3841314A1 (de) * 1988-12-08 1990-06-13 Schiess Ag Geschaeftsbereich S Drahterodiermaschine
DE19753797C2 (de) * 1997-12-04 2001-02-22 Buderus Schleiftechnik Vorrichtung zum Schleifen von Werkstücken
DE102005021638B4 (de) * 2005-05-06 2007-03-29 Satisloh Gmbh Drehmaschine zur Bearbeitung von optischen Werkstücken
US7399217B1 (en) 2007-02-05 2008-07-15 P.R. Hoffman Machine Products Lapping machine
CN201168873Y (zh) * 2007-12-28 2008-12-24 肖衍盛 一种数控机床的机座
JP5184910B2 (ja) * 2008-02-13 2013-04-17 株式会社岡本工作機械製作所 基板の平面研削装置
CN101745818A (zh) * 2008-12-11 2010-06-23 盐城环宇数控机床有限公司 高精度、超稳定数控铣床
CN102581624A (zh) * 2012-03-14 2012-07-18 济南黑钻精密机床有限公司 一种定梁龙门式数控机床

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104999364A (zh) * 2015-07-07 2015-10-28 成都亨通兆业精密机械有限公司 一种精密圆柱形零件的加工方法
DE102017121692A1 (de) 2017-09-19 2019-03-21 Supfina Grieshaber Gmbh & Co. Kg Feinbearbeitungsmaschine
WO2019057579A1 (fr) 2017-09-19 2019-03-28 Supfina Grieshaber Gmbh & Co. Kg Machine de finissage

Also Published As

Publication number Publication date
EP2689891A3 (fr) 2016-11-30
DE102012106777A1 (de) 2014-01-30

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