EP4100205A1 - Procédé et dispositif de rectification cylindrique - Google Patents

Procédé et dispositif de rectification cylindrique

Info

Publication number
EP4100205A1
EP4100205A1 EP21749084.6A EP21749084A EP4100205A1 EP 4100205 A1 EP4100205 A1 EP 4100205A1 EP 21749084 A EP21749084 A EP 21749084A EP 4100205 A1 EP4100205 A1 EP 4100205A1
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding wheel
workpiece
distance
wheel
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Withdrawn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
EP21749084.6A
Other languages
German (de)
English (en)
Inventor
Ralf Evertz
Jean-Louis Maurice
Gilles Schwirtz
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.)
Egon Evertz KG GmbH and Co
Original Assignee
Egon Evertz KG GmbH and Co
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 Egon Evertz KG GmbH and Co filed Critical Egon Evertz KG GmbH and Co
Publication of EP4100205A1 publication Critical patent/EP4100205A1/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Withdrawn legal-status Critical Current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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
    • B24B5/22—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work for grinding cylindrical surfaces, e.g. on bolts
    • 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
    • B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • 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
    • B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece

Definitions

  • the invention relates to a method for cylindrical grinding of cylindrical workpieces on a grinding machine, in which the axes of rotation of a grinding wheel and the workpiece are aligned parallel to one another and the grinding wheel is moved during grinding relative to the workpiece in the longitudinal axial direction of the workpiece.
  • Grinding is suitable for manufacturing parts with tightly toleranced dimensions that cannot be produced by turning or milling.
  • the advantages of grinding are, in particular, good machinability of hard materials, high dimensional and shape accuracy as well as small waviness and roughness.
  • the rotating grinding wheels have grinding grains whose position in the grinding wheel is undefined for each grain, so that grinding is referred to as cutting with geometrically undefined cutting edges.
  • cutting With external cylindrical longitudinal grinding, the workpiece is guided along the grinding wheel via the longitudinal feed of a workpiece slide.
  • Another variant is the so-called centerless cylindrical grinding, in which the round, cylindrical workpieces are pressed against the grinding wheel by a regulating wheel when being processed with a grinding wheel.
  • the grinding wheels used for longitudinal grinding often leave a helical error line on the workpiece, which depends on the feed.
  • a second grinding wheel follows the first grinding wheel at a constant distance, the distance being determined by the width of the first grinding wheel and the other grinding parameters such as the rotational speeds of the first grinding wheel and the workpiece and the feed in the longitudinal axial direction is determined in such a way that the second grinding wheel grinds the helical fault lines which the first grinding wheel has produced during grinding.
  • a second grinding wheel eliminates the surface defects in the workpiece that occur in a helical form.
  • the shape, arrangement or drive of the second grinding wheel can be selected as desired, as long as it is ensured that the said helical boundary line on the workpiece surface is reworked.
  • the grinding wheels can have abrasive grains with the same or different granulometry.
  • the first and second grinding wheels are mounted on the same axis of rotation and are driven at the same rotational speed during grinding. This has the advantage that only one drive needs to be used.
  • the grinding method according to the invention can be used for counter-rotating or co-rotating grinding wheels and workpieces, a co-rotating grinding wheel and workpiece provided that different rotational speeds are selected so that a relative movement between the grinding wheel and the workpiece can be set.
  • the grinding device described in claim 5 is used, which is characterized by a second grinding wheel, the distance to the first Grinding wheel is rotatably arranged. Both grinding wheels preferably have a common variable or controllable drive and/or are arranged on the same axis.
  • the distance between the first grinding wheel and the second grinding wheel can be adjusted.
  • a control device is provided that adjusts the distance between the first and second grinding wheel in such a way that the second grinding wheel sweeps over the helical error lines during grinding, which the first grinding wheel previously produced.
  • FIG. 2 shows a basic sketch of the grinding device according to the invention with a first and second grinding wheel.
  • helical error lines can arise during external cylindrical longitudinal grinding, which can be caused, for example, by non-parallel guidance of the surface line of the grinding wheel to the longitudinal slide movement or thermal influences or wear of the abrasion tool (for the grinding wheel).
  • the grinding wheel 12 leaves such helical grinding marks whose pitch is determined by the feed of the grinding wheel relative to the workpiece 10 shown by the arrow 13 .
  • the cylindrical workpiece 10 rests on rollers 14, 15, which are preferably in equally spaced serve as support and drive rollers for the rotary movement of the workpiece.
  • Fig. 1b and 1c show different drive options:
  • the drive rollers 14, 15, on which the cylindrical workpiece rests are rotated in the opposite direction to the direction of rotation of the grinding wheel 12.
  • the grinding wheel 12 and the cylindrical workpiece 10 move in the same direction of rotation, which is why the rotational speeds of the cylindrical workpiece 10 and the grinding wheel must be different for grinding.
  • the drive rollers 14, 15 drive the workpiece in a direction which is opposite to the direction of rotation of the grinding wheel 12.
  • a second grinding wheel 16 is used, which in the present case has the same diameter as the first grinding wheel 12 and which is mounted on the same axis of rotation.
  • the grinding wheels 12 and 16 experience the same rotational speed due to a common drive (not shown).
  • the distance between the first grinding wheel 12 and the second grinding wheel 16, which can be variably adjusted via a control device (not shown), depends on the spiral or helical course of the surface defects on the workpiece 10.
  • the second grinding wheel follows this helical line of defects and eliminates the surface defects.
  • the method according to the invention is suitable for all external cylindrical or internal cylindrical grinding processes, regardless of the dimensions of the workpiece and the material of which the workpiece is made.
  • post-processing of the workpiece surface can also be achieved in the simplest way with the method according to the invention.
  • the first and the second grinding wheel can be fixed so that the workpiece feed is generated by a linear movement of the cylindrical workpiece 10 .
  • the tandem grinding wheel pair consisting of the first and second grinding wheel can also be moved longitudinally and axially to the workpiece.

Landscapes

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

Abstract

L'invention concerne un procédé de rectification cylindrique de pièces cylindriques sur une machine à meuler, dans laquelle les axes de rotation d'un disque de meulage et de la pièce sont alignés parallèlement les uns par rapport aux autres et le disque de meulage est déplacé par rapport à la pièce dans la direction longitudinale-axiale de la pièce pendant le processus de meulage. Selon l'invention, le premier disque de meulage est suivi d'un second disque de meulage à une distance constante de façon continue, la distance étant déterminée par la largeur du premier disque de meulage et les paramètres de meulage restants, tels que les vitesses de rotation du premier disque de meulage et de la pièce et le débit d'alimentation dans la direction longitudinale-axiale, de telle sorte que le second disque de meulage rectifie les lignes d'erreur hélicoïdales générées par le premier disque de meulage pendant le processus de meulage. Un dispositif de commande règle la distance entre les premier et second disques de meulage.
EP21749084.6A 2020-08-05 2021-07-08 Procédé et dispositif de rectification cylindrique Withdrawn EP4100205A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020120617.8A DE102020120617A1 (de) 2020-08-05 2020-08-05 Verfahren und Vorrichtung zum Rundschleifen
PCT/DE2021/100596 WO2022028643A1 (fr) 2020-08-05 2021-07-08 Procédé et dispositif de rectification cylindrique

Publications (1)

Publication Number Publication Date
EP4100205A1 true EP4100205A1 (fr) 2022-12-14

Family

ID=77167928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21749084.6A Withdrawn EP4100205A1 (fr) 2020-08-05 2021-07-08 Procédé et dispositif de rectification cylindrique

Country Status (4)

Country Link
US (1) US20230191551A1 (fr)
EP (1) EP4100205A1 (fr)
DE (1) DE102020120617A1 (fr)
WO (1) WO2022028643A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2396505A (en) 1943-06-22 1946-03-12 Bridgeport Safety Emery Wheel Grinding
US4783932A (en) * 1987-02-11 1988-11-15 Sager Russell J Centerless grinder construction
JPH04193473A (ja) * 1990-11-26 1992-07-13 Kubota Corp 研削盤の研削条件設定装置
JP2832502B2 (ja) * 1992-12-30 1998-12-09 光洋機械工業株式会社 砥石車の組幅調整装置
FR2805768B1 (fr) * 2000-03-03 2002-06-14 Procedes Et Machines Speciales Procede de superfinition de pieces a surface cylindrique
DE10100871C1 (de) 2001-01-11 2002-06-20 Sms Eumuco Gmbh Spitzenlos-Schleifmaschine zum Durchgangsschleifen von länglichen Werkstücken
DE102004045418A1 (de) * 2004-03-16 2005-10-06 Waldrich Siegen Werkzeugmaschinen Gmbh Verfahren und Vorrichtung zum Schleifen einer Walze
JP4521244B2 (ja) * 2004-10-28 2010-08-11 ミクロン精密株式会社 ２工程連続研削方法および同装置
DE602004006149T3 (de) 2004-12-30 2011-06-09 Giuseppe Niesi, Marchirolo Schleifgerät, dessen Anwendung zum Schleifen von zylindrischen Gegenständen , Vorrichtung und Verfahren zum Schleifen von zylindrischen Gegenständen
US20110028074A1 (en) 2009-08-03 2011-02-03 Canon Kabushiki Kaisha Polishing method for a workpiece and polishing tool used for the polishing method
DE102010010758B4 (de) * 2010-03-09 2014-03-06 Erwin Junker Grinding Technology A.S. Spitzenlose Rundschleifmaschine zum Schleifen von stangenförmigen Werkstücken und Verfahren zum spitzenlosen Rundschleifen von stangenförmigen Werkstücken
DE102011102113A1 (de) * 2011-05-20 2012-11-22 Schaudt Mikrosa Gmbh Mehrscheiben-Schleifmaschine mit zumindest zwei Spindelsätzen

Also Published As

Publication number Publication date
US20230191551A1 (en) 2023-06-22
DE102020120617A1 (de) 2022-02-10
WO2022028643A1 (fr) 2022-02-10

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