EP0273950B1 - Verfahren und vorrichtung zur herstellung von drehteilen ab stange - Google Patents

Verfahren und vorrichtung zur herstellung von drehteilen ab stange Download PDF

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Publication number
EP0273950B1
EP0273950B1 EP87904380A EP87904380A EP0273950B1 EP 0273950 B1 EP0273950 B1 EP 0273950B1 EP 87904380 A EP87904380 A EP 87904380A EP 87904380 A EP87904380 A EP 87904380A EP 0273950 B1 EP0273950 B1 EP 0273950B1
Authority
EP
European Patent Office
Prior art keywords
rod
grinding
collet chuck
axis
process according
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.)
Expired - Lifetime
Application number
EP87904380A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0273950A1 (de
Inventor
Werner WÄLTI
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.)
Tschudin Werkzeugmaschinenfabrik
Original Assignee
Tschudin Werkzeugmaschinenfabrik
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 Tschudin Werkzeugmaschinenfabrik filed Critical Tschudin Werkzeugmaschinenfabrik
Priority to AT87904380T priority Critical patent/ATE73036T1/de
Publication of EP0273950A1 publication Critical patent/EP0273950A1/de
Application granted granted Critical
Publication of EP0273950B1 publication Critical patent/EP0273950B1/de
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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/01—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor for combined grinding of surfaces of revolution and of adjacent plane surfaces on work

Definitions

  • the present invention relates, on the one hand, to a method by means of which profiled turned parts, which can have right-angled flanks on both sides, can be produced directly by grinding from the bar without a Vietnamese dressing operation.
  • the present invention relates to an apparatus for performing this method.
  • the turned parts are symmetrical with respect to their longitudinal axis by means of Vietnamese automatic grinding of contoured parts from hardened bar stock", pages 528-530. If high demands are made on their dimensional accuracy and axis symmetry, such parts can still be ground to size after they have been decolleted and, if necessary, hardened.
  • any subsequent grinding to size of the hardened or unhardened parts becomes difficult, since the grinding wheel, particularly with very fine turned parts, has to be moved very slowly to them, because their raw mass is from piece to piece differently.
  • This also means that the grinding process, especially when high-precision parts have to be manufactured, has different lengths from the start of grinding to firing or that the grinding depths vary from piece to piece, which in turn can be problematic.
  • the present invention is therefore based on the object of proposing a method and a device by means of which the disadvantages of the conventional manufacture of turned parts from a bar are overcome and high-precision, axially symmetrical profiled turned parts with mutually opposing vertical surfaces can be produced from a bar.
  • this object is achieved on the one hand by a method as defined in claim 1.
  • a device which differs from the known devices in that it has a synchronous tool headstock with a second collet which rotates synchronously with the first collet and which contains a second profile grinding wheel, which is opposite the longitudinal axis of the rotating parts that can be shaped out of the rod is inclined and can be approached to the rod at an acute angle, both profile grinding wheels being controllable and usable individually or jointly.
  • FIG. 1 shows, on an enlarged scale, a turned part as can be produced by grinding from a rod of round steel by means of the method according to the invention in the device likewise according to the invention.
  • a turned part should have a length of approx. 50 mm and an average diameter of approx. 4.8 mm, which has to be ground to an accuracy of 0.005 mm and its ends should have a maximum impact of 0.001 mm.
  • the two part ends 1 'and 10 and the trimmings 5 and the release transition 6, but also the flank 8 of the groove 7, are absolutely perpendicular to the longitudinal axis A of the turned part.
  • the rotary part shown has cylindrical parts, which are an end pin 1, an exemption 2, a large diameter 3 and a small diameter 4, and Areas to be ground precisely at right angles to the longitudinal axis A of the turned part, namely a part end 1 ', a shoulder 5, a release transition 6, a groove flank 8 and a part end 10.
  • the small diameter 4 is offset from the large diameter 3 by a groove 7 and, as mentioned, the groove 7 has a right-angled groove flank 8 on one side and an inclined phase 9 on the other side.
  • this representative turned part chosen for the illustration of the present invention is an extremely demanding part, which is extremely difficult to manufacture with the conventional methods and with the conventional means, and its series production by means of the conventional method of decolleting and gradual grinding of the different diameters, shoulders, flanks and angles can be expensive, since it has to be clamped and processed several times in different ways.
  • this sophisticated part is very well suited to demonstrate the advantages and possibilities of the present invention compared to the conventional manufacturing processes for such parts.
  • a rod 13 of round material which can be unhardened or hardened steel, which rod 13 is pushed through a first collet 14 of a tool headstock 15 and from which the turned parts are to be molded in series.
  • the first collet 14 opposite a second collet 16 is arranged on the same axis B in a synchronous tool headstock 17, in which the rod 13, respectively.
  • a rotating part 18 still connected to the rod 13 is inserted up to an adjustable and adjustable stop 19.
  • the tool headstock 15 and the synchronous tool headstock 17 are advantageously components of an NC-controlled grinding machine, which enables automatic control of all work processes and operations.
  • 2 shows a profile grinding wheel 20 and a support steady rest 21.
  • the axis B which represents the intermediate collet axis and coincides with the longitudinal axis A of the rotating part to be ground out of the rod 13, is not compared to the feed axis of the profile grinding wheel 20 illustrated by the double arrow C. arranged at a right angle, but is inclined to it.
  • the axis of rotation D of the profile grinding wheel 20 is opposite the longitudinal axis A of the rotating part 18, respectively. relative to the collet axis B, inclined to the same extent. An inclination of approx.
  • the profile grinding wheel 20 is designed such that it can, but possibly in one operation in the context of several punctures, the end pin 1, the exemption 2 and the large diameter 3, and at the same time the rectangular surfaces adjacent to this diameter, here the paragraph 5 and the exemption transition 6 of a first rotating part 18 'and the part end 1' of the already in the second collet 16 advanced until the part end 1 'finished machined rotary part 18 grinds.
  • the small diameter 4 can be pre-ground on this occasion.
  • the groove flank 8 and the part end 10 can be ground by a second profile grinding wheel 20 '.
  • the small diameter 4 can be finished.
  • the profile grinding wheel 20 ' like the profile grinding wheel 20, is arranged inclined with respect to the longitudinal axis A of the rotating part 18, but this inclination of its axis of rotation D' relative to the perpendicular to the collet axis B is a mirror image of that of the profile grinding wheel 20.
  • the second collet 16 in the synchronous tool headstock 17 is advantageously opened and retracted so that the part inserted into it and from the rod 13 separate rotary part 18 can be pushed out of it by means of the stop 19 before the rod 13 is advanced so far until the connected with it the rotating part 18 'in the place of the rotating part 18 is retracted into the second collet 16.
  • the two-part grinding process described above takes place, in which a further turned part is pre-ground and the turned part 18' is finish-ground. It may be appropriate to monitor a critical diameter of the turned part during the grinding process by means of a diameter measuring head 22 in such a way that the profile disk feed can be controlled as a function of this part dimension.
  • the turned parts 18 produced in accordance with the above grinding operation are, if they have been ground out of hardened rods 13, finished and do not require any further processing. Even if the rotating parts 18 are ground out of unhardened rods 13, they are considerably more dimensionally stable and their surfaces finer than if they had been produced by means of a Vietnamese Vietnamese operation. Nevertheless, it may be necessary to finish them after hardening in order to guarantee the desired precision. In such a case, the rotating parts 18 will therefore at least partially be provided with excesses, which will only be removed to size on the occasion of grinding.
  • an automatic bar reloading device is used, thanks to the invention, a fully automatic turned parts production can be realized, which does not require manual adjustment of the processing tools, because the profile grinding wheels can be removed directly on the NC-controlled grinding machines by means of diamond rollers and automatically adjusted, as is the case for a person skilled in the art is known.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Fluid-Damping Devices (AREA)
EP87904380A 1986-07-21 1987-07-17 Verfahren und vorrichtung zur herstellung von drehteilen ab stange Expired - Lifetime EP0273950B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87904380T ATE73036T1 (de) 1986-07-21 1987-07-17 Verfahren und vorrichtung zur herstellung von drehteilen ab stange.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2913/86A CH669549A5 (ja) 1986-07-21 1986-07-21
CH2913/86 1986-07-21

Publications (2)

Publication Number Publication Date
EP0273950A1 EP0273950A1 (de) 1988-07-13
EP0273950B1 true EP0273950B1 (de) 1992-03-04

Family

ID=4244438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87904380A Expired - Lifetime EP0273950B1 (de) 1986-07-21 1987-07-17 Verfahren und vorrichtung zur herstellung von drehteilen ab stange

Country Status (7)

Country Link
US (1) US4841682A (ja)
EP (1) EP0273950B1 (ja)
JP (1) JPH01500981A (ja)
AT (1) ATE73036T1 (ja)
CH (1) CH669549A5 (ja)
DE (1) DE3777130D1 (ja)
WO (1) WO1988000513A1 (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3733308A1 (de) * 1987-10-02 1989-04-13 Buderus Kundenguss Schleifkoerper
DE4039805A1 (de) * 1990-12-13 1992-06-17 Schaudt Maschinenbau Gmbh Schleifscheibe
JPH08155747A (ja) * 1994-12-05 1996-06-18 Fuji Oozx Inc 傘形ワークの加工方法
DE945216T1 (de) * 1998-03-25 2000-06-08 Unova U.K. Ltd., Aylesbury Kerben-Schleifwerkzeug
US6120356A (en) 1998-09-02 2000-09-19 Xerox Corporation Grinding wheel with geometrical pattern
DE10134650B4 (de) 2001-07-20 2009-12-03 Roche Diagnostics Gmbh System zur Entnahme kleiner Körperflüssigkeitsmengen
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
JP6621575B2 (ja) * 2013-08-29 2019-12-18 Ntn株式会社 流体動圧軸受装置用軸部材及びその製造方法
US10384326B2 (en) * 2015-12-21 2019-08-20 General Electric Company Surface treatment of turbomachinery
US9879536B2 (en) * 2015-12-21 2018-01-30 General Electric Company Surface treatment of turbomachinery
CN111890162B (zh) * 2020-07-30 2022-06-10 惠州帅翼驰铝合金新材料有限公司 一种用于铝棒的表面打磨机构及其操作方法
EP4147821A1 (de) * 2021-09-14 2023-03-15 Thielenhaus Technologies GmbH Verfahren und vorrichtung zur bearbeitung einer hartstoffbeschichteten werkstückfläche eines rotationssymmetrischen werkstücks

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3145508A (en) * 1963-02-21 1964-08-25 Landis Tool Co Apparatus for grinding intersecting annular and cylindrical surfaces
US3881887A (en) * 1973-12-19 1975-05-06 Mcmaster Harold Apparatus and method for grinding an elongated workpiece

Also Published As

Publication number Publication date
US4841682A (en) 1989-06-27
DE3777130D1 (de) 1992-04-09
CH669549A5 (ja) 1989-03-31
JPH01500981A (ja) 1989-04-06
EP0273950A1 (de) 1988-07-13
WO1988000513A1 (en) 1988-01-28
ATE73036T1 (de) 1992-03-15

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