EP2447000B1 - Procédé de traitement d'une pièce usinée à l'aide d'une rectifieuse plane - Google Patents

Procédé de traitement d'une pièce usinée à l'aide d'une rectifieuse plane Download PDF

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Publication number
EP2447000B1
EP2447000B1 EP10188874A EP10188874A EP2447000B1 EP 2447000 B1 EP2447000 B1 EP 2447000B1 EP 10188874 A EP10188874 A EP 10188874A EP 10188874 A EP10188874 A EP 10188874A EP 2447000 B1 EP2447000 B1 EP 2447000B1
Authority
EP
European Patent Office
Prior art keywords
work piece
working area
workpiece
recited
moved
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.)
Not-in-force
Application number
EP10188874A
Other languages
German (de)
English (en)
Other versions
EP2447000A1 (fr
EP2447000B2 (fr
Inventor
Markus Dipl.-Ing. Winkens (FH)
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.)
Supfina Grieshaber GmbH and Co KG
Original Assignee
Supfina Grieshaber GmbH and Co KG
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
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Application filed by Supfina Grieshaber GmbH and Co KG filed Critical Supfina Grieshaber GmbH and Co KG
Priority to EP10188874.1A priority Critical patent/EP2447000B2/fr
Publication of EP2447000A1 publication Critical patent/EP2447000A1/fr
Publication of EP2447000B1 publication Critical patent/EP2447000B1/fr
Application granted granted Critical
Publication of EP2447000B2 publication Critical patent/EP2447000B2/fr
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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
    • 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
    • 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
    • B24B7/02—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a reciprocatingly-moved work-table
    • 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
    • B24B7/04—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a rotary work-table

Definitions

  • the invention relates to a method for machining a workpiece by means of a surface grinding machine, comprising at least one grinding wheel and at least one workpiece holder which can be driven in a movement plane for holding at least one workpiece, which can be introduced into and out of the working area by means of the workpiece holder in a working area of the surface grinding machine
  • Working area is limited by at least one effective surface of the at least one grinding wheel (see, eg EP-A-1 972 412 ).
  • grinding machines which have a grinding wheel for one-sided machining of a workpiece and two grinding wheels for the double-sided machining of a workpiece with which flat workpiece surfaces are produced.
  • For each workpiece surface to be produced further grinding machines are used. This is disadvantageous in view of the overall production time of a complex-shaped workpiece and the space required for the plurality of machine tools space.
  • the present invention has the object to provide a method for machining a workpiece, with which the aforementioned disadvantages are avoided.
  • This object is achieved in a method of the type mentioned in the present invention that the workpiece is introduced only along part of its length in the work area, edited with the at least one effective surface and run again from the work area, so after machining this part of the workpiece a distance of the workpiece surfaces of this part is smaller than a distance of not inserted into the work area workpiece surfaces.
  • the inventive method makes it possible to produce even more complex workpieces by means of a surface grinding machine.
  • workpiece surfaces which are stepped relative to one another and parallel to one another can be produced.
  • the workpiece can remain during the production of stepped workpiece surfaces in the same workpiece holder, in which the workpiece can also be received for a surface grinding machining along its entire length. In this way, production times can be significantly reduced. In addition, additional machine tools can be saved.
  • the distance between the workpiece surfaces of the machined part of the workpiece and the distance between the workpiece surfaces of the non-machined part of the workpiece are measured transversely, in particular perpendicular, to the plane of movement of the workpiece holder.
  • the workpiece surfaces not introduced into the work area are parallel to the machined workpiece surfaces.
  • workpieces can be produced, which each have mutually parallel workpiece surfaces on opposite sides of the workpiece.
  • a workpiece is machined by means of two grinding wheels, which each have an active surface, on opposite sides of the workpiece.
  • the inventive method is particularly well suited for the machining of workpieces, which is mirror-symmetrical with respect to a main plane which lies between the workpiece surfaces to be machined.
  • the inventive method can be used in principle for arbitrarily shaped workpieces.
  • special advantages arise when the workpiece is a connecting rod. This makes it possible to produce end faces of a piston pin bearing and end faces of a crankshaft bearing, which have different distances relative to each other.
  • the part of the connecting rod to be introduced into the working area is an end face of the piston pin bearing.
  • the part of the connecting rod which is not to be introduced into the work area is preferably an end face of the crankshaft bearing, so that it can be made wider and therefore more stable.
  • the present invention has the further object of providing a device with which the disadvantages described above are avoided.
  • a surface grinding machine comprising at least one rotating drivable grinding wheel with an effective surface, further comprising a workpiece holder for holding a workpiece to be machined, according to the invention that the workpiece holder by means of a workpiece holder drive into a working area bounded by the effective area and in opposite thereto movable and that a control device configured to carry out a method as described above is provided for controlling the workpiece holder drive.
  • the invention further relates to the use of a surface grinding machine for carrying out a method described above.
  • the surface grinding machine 10 has a first grinding wheel 12, which overlaps a workpiece holder 16 in the form of a transport disk 18 in a working area 14.
  • the first grinding wheel 12 has a working surface 14 facing, planar first active surface 20.
  • the surface grinding machine 10 comprises a second grinding wheel 22, which has a work area 14 with limiting second active surface 24.
  • the first active surface 20 and the second active surface 24 are in particular flat and preferably circular.
  • the active surfaces 20 and 24 are aligned in particular parallel to each other, but may also be slightly inclined to each other when the grinding wheels 12 and 22 are "tilted" relative to each other.
  • Each of the grinding wheels 12 and 22 has a rotary drive 26, which serves in each case for the rotational drive of a grinding wheel 12, 22 about a respectively associated rotation axis 28.
  • the workpiece holder 16 has a workpiece holder drive 30, which serves to rotate or pivot the workpiece holder 16 about a workpiece holder axis 32.
  • the workpiece holder axis 32 and the grinding wheel axes 28 are preferably at least substantially parallel relative to each other.
  • the workpiece holder 16 comprises at least one workpiece holder 34, which is designed in particular in the form of a recess into which a workpiece 36 to be machined can be inserted in such a way that it faces away from the workpiece sides 38 and 40 (cf. FIG. 2 ) each protrudes beyond an upper and lower boundary of the workpiece holder 16.
  • the bearing surface 41 extends to the boundary of the grinding wheels 12, 22 adjacent to an edge 43 which in FIG. 1 is covered by the transport disc 18 and therefore shown with a dashed line.
  • the grinding wheel 12 is associated with a grinding wheel drive 44, by means of which the grinding wheel 12 in parallel to the grinding wheel axis 28 in the direction towards the working area 14 and this is opposite movable.
  • Another grinding wheel drive 46 serves to move the second grinding wheel 22 in a direction parallel to the grinding wheel axis 28 in the direction of the working area 14 and opposite thereto.
  • the grinding wheel drives 44 and 46 are over in FIG. 2 indicated data lines coupled to a controller 48, which in FIG. 1 is shown.
  • the control device 48 is additionally coupled to the workpiece holder drive 30.
  • the control device 48 serves to control a delivery of the grinding wheels 12 and 22 for adjusting the distance between the active surfaces 20 and 24 and to control a rotational and / or pivoting movement of the workpiece holder 16 about the workpiece holder axis 32.
  • the workpiece 36 is formed in particular in the form of a connecting rod 42.
  • the connecting rod 42 extends within a main plane 50, between a front end 52 and a rear end 54. Adjacent to the front end 52, the connecting rod 42, a piston pin bearing 56 and adjacent to the rear end 54, a crankshaft bearing 58 on.
  • the workpiece holder 16 For introducing a workpiece 36 into the working area 14 and for executing a workpiece 36 out of the working area 14, the workpiece holder 16 is in a movement direction 64 and opposite thereto in a direction of movement 66 around the Workpiece holder drive shaft 32 can be rotated or pivoted. In this case, the workpiece holder 16 moves in a plane of movement 68.
  • this is introduced by means of the workpiece holder 16 into the working region 14 of the active surfaces 20, 24. In this case, they have a first, larger distance relative to each other.
  • the workpiece 36 is thereby introduced along its entire length in the work area.
  • the workpiece can be inserted in the same direction of movement 64 or 66 at a first end of the working area 14 in this and executed at another end of the work area 14 again.
  • the end faces 62 are generated. In the area of the end faces 60 still to be produced, the workpiece initially still has an oversize.
  • the distance of the active surfaces 20 and 24 is reduced to a second, smaller distance.
  • the workpiece 36 is then not introduced along its entire length between its front end 52 and its rear end 54 in the work area 14, but - in a first direction of movement 64 - only along part of its length, namely one Part that includes the piston pin bearing 56.
  • the part of the workpiece which is as described above After machining the workpiece 36 along part of its length, this part of the workpiece 36 is removed from the working area 14 in the direction of movement 66 opposite the first direction of movement 64.
  • end faces 60 can be generated, which have a smaller distance relative to each other than the end faces 62. In this way, provided with a plane-parallel steps workpiece 36 are produced by means of the same surface grinding machine 10.
  • a workpiece holder As an alternative to the workpiece holder 16 described above in the form of a transport disk 18, it is also possible to use a workpiece holder, with which the workpiece is moved along a straight trajectory.
  • a workpiece holder is used, which (for example in the form of a carriage) along a straight trajectory (for example in the form of a carriage guide) is reciprocally driven and drivable.
  • the control of the movement preferably takes place by means of the control device 48.
  • a rectilinear guide can be used, on which a workpiece holder in the form of a carriage is guided so that a workpiece 36 held on the workpiece holder can be inserted in a straight line into the working area 14 and out of the working area 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Claims (11)

  1. Procédé d'usinage d'une pièce (36) à l'aide d'une rectifieuse plane (10), comprenant au moins une meule (12, 22) et au moins un porte-pièce (16) apte à être entraîné dans un plan de déplacement (68) et destiné à maintenir au moins une pièce (36) qui, au moyen dudit porte-pièce (16), peut être introduite dans une zone de travail (14) de la rectifieuse plane (10) et être menée hors de ladite zone de travail (14), ladite zone de travail (14) étant délimitée par au moins une surface active (20, 24) de ladite au moins une meule (12, 22), caractérisé par le fait que ladite pièce (36) n'est introduite dans ladite zone de travail (14) que suivant une partie de sa longueur, est usinée au moyen de ladite au moins une surface active (20, 24) et est menée hors de la zone de travail (14) de sorte que, après avoir usiné cette partie de la pièce (36), une distance des surfaces de pièce (60) de cette partie est plus petite qu'une distance de surfaces de pièce (62) non pas introduites dans ladite zone de travail (14).
  2. Procédé selon la revendication 1, caractérisé par le fait que les surfaces de pièce (62) non pas introduites dans la zone de travail (14) sont parallèles aux surfaces de pièce (60) usinées.
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé par le fait que la pièce (36) est usinée d'abord, avant d'introduire une partie seulement de sa longueur dans ladite zone de travail (14), suivant l'ensemble de sa longueur dans la zone de travail (14).
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé par le fait que ladite pièce est usinée sur des côtés de pièce (38, 40) opposés l'un à l'autre, au moyen de deux meules (12, 22) qui présentent chacune une surface active (20, 24).
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé par le fait que ladite pièce (36) est à symétrie spéculaire par rapport à un plan principal (50) qui est situé entre les surfaces de pièce (60, 62) à usiner.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé par le fait que ladite pièce (36) est une bielle (42).
  7. Procédé selon la revendication 6, caractérisé par le fait que, pour ce qui est de la partie de la bielle qui est à introduire dans ladite zone de travail (14), il s'agit de surfaces frontales (60) d'un palier d'axe de piston (56).
  8. Procédé selon la revendication 6 ou 7, caractérisé par le fait que, pour ce qui est de la partie de la bielle (42) qui n'est pas à introduire dans ladite zone de travail (14), il s'agit de surfaces frontales (62) d'un palier de vilebrequin (58).
  9. Rectifieuse plane (10) comprenant au moins une meule (12, 22) apte à être entrainée en rotation et ayant une surface active (20, 24), comprenant en outre un porte-pièce (16) destiné à maintenir une pièce (36) à usiner, caractérisée par le fait que ledit porte-pièce (16) peut être déplacé, au moyen d'un mécanisme d'entraînement de porte-pièce (30), dans une zone de travail (14) délimitée par ladite surface active (20, 24) et de manière opposée à cela, et que l'on prévoit un dispositif de commande (48) adapté pour la mise en oeuvre d'un procédé selon l'une quelconque des revendications précédentes, pour commander le mécanisme d'entraînement de porte-pièce (30).
  10. Rectifieuse plane (10) selon la revendication 9, comprenant deux meules (12, 22) aptes à être entraînées en rotation et ayant chacune une surface active (20, 24) qui délimitent ladite zone de travail (14).
  11. Utilisation d'une rectifieuse plane (10), pour la mise en oeuvre d'un procédé selon l'une quelconque des revendications 1 à 8.
EP10188874.1A 2010-10-26 2010-10-26 Procédé de traitement d'une pièce usinée à l'aide d'une rectifieuse plane Not-in-force EP2447000B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10188874.1A EP2447000B2 (fr) 2010-10-26 2010-10-26 Procédé de traitement d'une pièce usinée à l'aide d'une rectifieuse plane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10188874.1A EP2447000B2 (fr) 2010-10-26 2010-10-26 Procédé de traitement d'une pièce usinée à l'aide d'une rectifieuse plane

Publications (3)

Publication Number Publication Date
EP2447000A1 EP2447000A1 (fr) 2012-05-02
EP2447000B1 true EP2447000B1 (fr) 2013-03-20
EP2447000B2 EP2447000B2 (fr) 2019-09-18

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ID=43825403

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Application Number Title Priority Date Filing Date
EP10188874.1A Not-in-force EP2447000B2 (fr) 2010-10-26 2010-10-26 Procédé de traitement d'une pièce usinée à l'aide d'une rectifieuse plane

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012024248A1 (de) * 2012-12-12 2014-06-12 Diskus Werke Schleiftechnik Gmbh Verfahren und Vorrichtung zur Herstellung eines mindestens eine Stufe aufweisenden Werkstücks

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663890A (en) * 1982-05-18 1987-05-12 Gmn Georg Muller Nurnberg Gmbh Method for machining workpieces of brittle hard material into wafers
US4635401A (en) † 1983-09-01 1987-01-13 Daisho Seiki Kabushiki Kaisha Duplex-head surface grinder
JP5060144B2 (ja) * 2007-03-23 2012-10-31 光洋機械工業株式会社 両頭平面研削方法及び装置

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EP2447000A1 (fr) 2012-05-02
EP2447000B2 (fr) 2019-09-18

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