EP1137505A1 - Procede et dispositif pour la rectification de pieces ayant un centre presentant des ecarts de forme - Google Patents

Procede et dispositif pour la rectification de pieces ayant un centre presentant des ecarts de forme

Info

Publication number
EP1137505A1
EP1137505A1 EP99963457A EP99963457A EP1137505A1 EP 1137505 A1 EP1137505 A1 EP 1137505A1 EP 99963457 A EP99963457 A EP 99963457A EP 99963457 A EP99963457 A EP 99963457A EP 1137505 A1 EP1137505 A1 EP 1137505A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
tip
tailstock
quill
center
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Withdrawn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
EP99963457A
Other languages
German (de)
English (en)
Inventor
Erwin Junker
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.)
Erwin Junker Maschinenfabrik GmbH
Original Assignee
Erwin Junker Maschinenfabrik 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 Erwin Junker Maschinenfabrik GmbH filed Critical Erwin Junker Maschinenfabrik GmbH
Publication of EP1137505A1 publication Critical patent/EP1137505A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B23/00—Tailstocks; Centres
    • 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
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • 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
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
    • B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
    • 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
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/065—Steady rests
    • 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

Definitions

  • the invention relates to a method and an apparatus for grinding workpieces with centers that deviate in shape.
  • the prior art includes fine machining, in particular grinding, of workpieces, which are received between the tips of a workpiece headstock and a tailstock.
  • fine machining in particular grinding
  • workpieces that have very thin walls in the area of the clamping center are particularly difficult.
  • Such workpieces are often not pre-machined to the exact shape or, due to a heat treatment applied after the pre-machining, have inaccuracies in shape such as roundness due to warpage.
  • the elimination of this distortion-related out-of-roundness of thin-walled workpieces can usually not be corrected by subsequent grinding on the outside diameter of the workpieces, i.e. the out-of-roundness of the center is transferred as an error in dimensions and roundness during external cylindrical grinding.
  • the tip of the tailstock which is mounted on the tailstock quill, with a pressure bolt, which is equipped with a spring element. is executed.
  • the workpiece to be machined is pressed axially against the opposite tip of the workpiece spindle of the workpiece spindle stick.
  • the workpiece is supported by a steady position.
  • the pressure pin consists of a piston part and a rod part; the pressure pin is mounted inside the base body of the tailstock tip.
  • the tailstock quill with tailstock tip can be retracted to an intermediate position.
  • the workpiece for machining in the centering area of the workpiece headstock and the jaws of the support steady rest are thus centered exactly.
  • FIG. 1 shows a partial top view of a grinding machine with a partial sectional view of the workpiece clamping.
  • FIG. 2 shows a further partial top view of the grinding machine according to FIG. 1 with a partial sectional view of the workpiece clamping in an operating position.
  • Fig. 3 shows a sectional view of the tailstock-side workpiece clamping with the tailstock tip in a contact position with the steady rest, but not shown.
  • Fig. 4 shows a sectional view of the tailstock-side workpiece clamping with pressure bolts in a retracted intermediate position of the tailstock quill with the tailstock tip.
  • FIG. 1 shows, for example, the clamping of a workpiece 5 on a grinding machine.
  • the workpiece 5 is clamped between the tip 4 of the workpiece spindle 30 of the workpiece headstock 1 and the tip 6 with the center 11 of the tailstock 3.
  • the clamping and unclamping of the workpiece between the tip 4 of the workpiece spindle 30 and the tip 6 of the quill 13 is made possible in that the tailstock quill 13 is retracted into a rear position by moving the tailstock.
  • the workpiece headstock 1 and the tailstock 3 are on a grinding table 2 which can be moved in the Z direction and is only partially shown. assembled.
  • the workpiece headstock 1 has a workpiece spindle 30. which is driven by a motor drive, not shown.
  • the tailstock 3 is equipped with a moving tailstock quill 13 which is axially displaceable within the housing of the tailstock 3.
  • the center axis of the workpiece spindle 30 of the workpiece headstock 1 and the quill 13 of the tailstock 3 are exactly aligned with one another. In between, the workpiece 5 is also clamped in alignment with its longitudinal axis.
  • a support bezel 7 with movable jaws 9 is arranged on the grinding table 2.
  • the grinding spindle 15 with the grinding wheel 16 is perpendicular to the workpiece in the direction of the X axis. clamping adjustable.
  • the grinding spindle 15 is arranged axially parallel to the Z axis of the machine tool.
  • the grinding wheel 16 is set at right angles to the workpiece in the direction of the X axis.
  • the workpiece is clamped between the tip 4 of the workpiece headstock 1 and the tip 6 of the tailstock 3. Since the workpiece 5 in the center 11, which rests on the tip 6 of the tailstock 3, is very thin-walled. a centering deformation of the thin-walled area of the workpiece 5 takes place as a result of the compressive forces applied during clamping; because the tailstock-side area of the receiving center of the workpiece 5 is pressed round by the axial pressure force emanating from the tip 6 of the tailstock 3 in connection with the frustoconical tip 6 of the tailstock 3.
  • a steady rest 8 is ground against which a support bezel 7 can be moved, with the grinding wheel 16 being arranged at right angles to the workpiece according to the X axis and parallel to the Z axis with the grinding wheel 16 being arranged on the grinding spindle 15 Baking 9 is started.
  • the workpiece 5 is reclamped and finished in order in this way to achieve an accurate, i.e. to obtain workpiece 5 freed from non-roundness.
  • FIG. 3 shows the embodiment for the frustoconical design of the tip 6, which is covered with a hard metal body 6A for reasons of wear.
  • the quill 13 of the tailstock 3 is shown, the tip 6 being arranged on a guide element 24 which is aligned with the longitudinal axis of the quill 13.
  • the guide element 24 has a central longitudinal bore which has bore sections which become smaller in diameter towards the end of the tip. At the opposite end of the guide element 24, the diameter water of the hole for receiving an adjustable screw 23 is the largest. The subsequent bore section has a smaller diameter.
  • a spring element 22 which is adapted to this diameter is arranged in this drilling section and bears on the one hand against the end face of an adjustable screw 23 and on the other hand against the end face of a cylindrical piston part 26 of a pressure pin 21 of the same diameter.
  • the other end of the cylindrical piston part 26 has an axially extending rod part 27 with a much smaller diameter.
  • the rod part 27 is guided through the outlet bore of the guide element 24.
  • the pressure bolt 21 preloaded with the spring element 22 exerts an axial force 32 on the workpiece 5.
  • Fig. 4 the sleeve 13 of the tailstock 3 is retracted to an intermediate position according to arrow position 10, so that the cone of the tip 6 of the tailstock 3 is no longer in pressure contact with the workpiece 5, according to position 1 1A.
  • the push rod 21 presses but with the spring force of the spring element 22, the workpiece 5 against the tip 4 of the workpiece spindle 30 of the workpiece headstock 1.
  • the support bezel 7 ensures the radial alignment of the workpiece 5 with respect to the tip 4 of the workpiece spindle 30 and the tip 6 of the quill 13.
  • the tip 6 of the tailstock 3 can thus be retracted to an intermediate position 10 without the centering achieved during clamping To affect workpiece 5. In any case, this path must be so great that the workpiece 5 no longer contacts the tip 6 of the sleeve 13, so that the workpiece 5 receives a contact-free center 11A. It is therefore sufficient if the travel distance to this intermediate position is only a few tenths of a millimeter.
  • the workpiece 5 Since the torque of the rotary movement of the workpiece 5 is transmitted through the tip 4 of the workpiece headstock 1, the workpiece 5 must be pressed against the tip 4 of the workpiece spindle 30 by a force 32. This frictional connection is provided by the pressure pin 21 via the rod part 27. In this way, the workpiece 5 is rotatably driven and held in the centered position by the support lugs 7, so that complete machining of the workpiece 5 on the outer circumference is made possible. In this way, the outer circumference of the tailstock end of the workpiece 5 can also be machined without inaccuracies, ie out-of-roundness, being transmitted to the workpiece 5.
  • At least one machining step on another machine tool with a different clamping system can be saved, whereby the machining costs can be reduced.
  • the method according to the invention and the device developed for this purpose are in no way limited to the grinding of workpieces; rather, other finishing operations can also be carried out afterwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Turning (AREA)

Abstract

L'invention concerne un procédé pour l'usinage de pièces ayant des zones présentant des écarts de forme. Dans le procédé selon l'invention, la pièce (5) est montée entre la pointe (4) de la broche (30) de la poupée porte-pièce (1) et la pointe (6) du fourreau (13) de la contre-poupée (3) et un logement de lunette (8) est poli sur la pièce (5), la pointe (6) du fourreau (13) de la contre-poupée (3) adhérant au centre du logement de la pièce. Le procédé selon l'invention est caractérisé en ce que, après polissage du logement de lunette, la pointe et le fourreau de contre-poupée sont ramenés de la zone de contact au centre de la fixation de la pièce à une position intermédiaire et en ce que la position de la pièce est fixée, côté contre-poupée, par une lunette (7) et une force axiale dirigée contre le centre de la fixation de la pièce et appliquée par l'intermédiaire d'un boulon de maintien précontraint (21).
EP99963457A 1998-12-11 1999-12-09 Procede et dispositif pour la rectification de pieces ayant un centre presentant des ecarts de forme Withdrawn EP1137505A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19857359A DE19857359B4 (de) 1998-12-11 1998-12-11 Verfahren und Vorrichtung zum Bearbeiten von Werkstücken mit dünnwandigen Bereichen, die zentrische Formabweichungen aufweisen
DE19857359 1998-12-11
PCT/EP1999/009702 WO2000035617A1 (fr) 1998-12-11 1999-12-09 Procede et dispositif pour la rectification de pieces ayant un centre presentant des ecarts de forme

Publications (1)

Publication Number Publication Date
EP1137505A1 true EP1137505A1 (fr) 2001-10-04

Family

ID=7890850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99963457A Withdrawn EP1137505A1 (fr) 1998-12-11 1999-12-09 Procede et dispositif pour la rectification de pieces ayant un centre presentant des ecarts de forme

Country Status (11)

Country Link
EP (1) EP1137505A1 (fr)
JP (1) JP2002532263A (fr)
KR (1) KR20010093805A (fr)
CN (1) CN1329528A (fr)
AU (1) AU1974700A (fr)
BR (1) BR9916125A (fr)
CA (1) CA2352426A1 (fr)
CZ (1) CZ296983B6 (fr)
DE (1) DE19857359B4 (fr)
RU (1) RU2001118829A (fr)
WO (1) WO2000035617A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113414648A (zh) * 2021-07-28 2021-09-21 八环轴承（长兴）有限公司 一种交叉滚子轴承封堵塞的表面加工方法

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DE10144644B4 (de) * 2001-09-11 2006-07-13 Bsh Holice A.S. Verfahren und Vorrichtung zum Schleifen von zentrischen Lagerstellen von Kurbelwellen
DE10232394B4 (de) * 2002-07-17 2004-07-22 Erwin Junker Maschinenfabrik Gmbh Verfahren und Vorrichtung zum Schleifen einer rotierenden Walze
DE10308292B4 (de) 2003-02-26 2007-08-09 Erwin Junker Maschinenfabrik Gmbh Verfahren zum Rundschleifen bei der Herstellung von Werkzeugen aus Hartmetall und Rundschleifmaschine zum Schleifen von zylindrischen Ausgangskörpern bei der Herstellung von Werkzeugen aus Hartmetall
EP1579954A1 (fr) * 2004-03-25 2005-09-28 WENDT GmbH Dispositif de serrage à tige-poussoir
IT1403602B1 (it) * 2010-12-22 2013-10-31 Tenova Spa Metodo per il posizionamento di cilindri operativi su di una macchina rettificatrice e macchina rettificatrice che attua tale metodo
CN102275123A (zh) * 2011-09-19 2011-12-14 湖州剑力金属制品有限公司 一种抛光装置
CN103737034A (zh) * 2013-12-20 2014-04-23 广西南宁德通网络有限公司 一种磨合型车床尾座
CN104493210B (zh) * 2014-12-08 2017-01-04 重庆第二机床厂有限责任公司 一种高速回转尾座机构
DE102015206565B4 (de) * 2015-04-13 2024-02-08 Erwin Junker Grinding Technology A.S. VERFAHREN UND SYSTEM ZUM AUßENSCHLEIFEN VON WELLENTEILEN ZWISCHEN SPITZEN
CN105127870A (zh) * 2015-09-09 2015-12-09 成都川睿科技有限公司 用于智能交通系统中智能设备的轴类件除毛刺装置
CN105150061B (zh) * 2015-09-09 2017-09-26 盐城市三川轴承制造有限公司 智能交通系统中智能设备的轴类件的表面除毛刺装置
CN105150062A (zh) * 2015-09-09 2015-12-16 成都川睿科技有限公司 智能交通系统中智能设备的轴类件除毛刺装置
CN107138990A (zh) * 2017-06-12 2017-09-08 芜湖中意液压科技股份有限责任公司 一种全液压转向器阀芯加工工装
CN109317702A (zh) * 2017-07-31 2019-02-12 田中金属加工（上海）有限公司 一种用于加工中心四轴的尾座
CN108788951A (zh) * 2018-05-03 2018-11-13 佛山市南海九洲普惠风机有限公司 一种轴径打磨设备
CN108907967A (zh) * 2018-09-12 2018-11-30 深圳市欣汉生科技有限公司 一种滚轮片全自动去披锋机
CN109262082B (zh) * 2018-10-19 2024-07-12 陕西法士特齿轮有限责任公司 一种锥面定位快换式轴用磨齿夹具
CN110293432A (zh) * 2019-08-07 2019-10-01 安徽星瑞齿轮传动有限公司 一种顶尖涨套复合定位花键铣夹具及工件夹紧定位方法
CN113843668B (zh) * 2021-09-26 2023-01-17 广东拓斯达科技股份有限公司 全自动磨外圆设备
CN114559105B (zh) * 2021-12-15 2023-11-21 郑州华威齿轮有限公司 一种齿轮轴锁边槽的加工机床及其加工方法
CN114473585A (zh) * 2022-01-17 2022-05-13 成都大金航太科技股份有限公司 一种薄壁环型件的固定装置
CN114589623A (zh) * 2022-01-20 2022-06-07 中船澄西船舶修造有限公司 一种托磨用工装

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113414648A (zh) * 2021-07-28 2021-09-21 八环轴承（长兴）有限公司 一种交叉滚子轴承封堵塞的表面加工方法

Also Published As

Publication number Publication date
CN1329528A (zh) 2002-01-02
DE19857359A1 (de) 2000-06-21
AU1974700A (en) 2000-07-03
CZ20012055A3 (cs) 2002-05-15
DE19857359B4 (de) 2005-09-15
WO2000035617A1 (fr) 2000-06-22
CZ296983B6 (cs) 2006-08-16
RU2001118829A (ru) 2003-05-27
KR20010093805A (ko) 2001-10-29
BR9916125A (pt) 2001-09-04
JP2002532263A (ja) 2002-10-02
CA2352426A1 (fr) 2000-06-22

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