EP0674970A1 - Spitzenlose Schleifmaschine - Google Patents

Spitzenlose Schleifmaschine Download PDF

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Publication number
EP0674970A1
EP0674970A1 EP95301796A EP95301796A EP0674970A1 EP 0674970 A1 EP0674970 A1 EP 0674970A1 EP 95301796 A EP95301796 A EP 95301796A EP 95301796 A EP95301796 A EP 95301796A EP 0674970 A1 EP0674970 A1 EP 0674970A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
grinding
engine valve
stem
grinding 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Withdrawn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
EP95301796A
Other languages
English (en)
French (fr)
Inventor
Katsuhiko C/O Fuji Oozx Inc. Harada
Michio C/O Fuji Oozx Inc. Araki
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.)
Fuji Oozx Inc
Original Assignee
Fuji Oozx Inc
Fuji Valve Co Ltd
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 Fuji Oozx Inc, Fuji Valve Co Ltd filed Critical Fuji Oozx Inc
Priority to DE1995601414 priority Critical patent/DE69501414T2/de
Priority to EP19950301920 priority patent/EP0674971B1/de
Publication of EP0674970A1 publication Critical patent/EP0674970A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B24B5/307—Means for supporting work
    • 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
    • B24B15/00—Machines or devices designed for grinding seat surfaces; Accessories therefor
    • B24B15/04—Machines or devices designed for grinding seat surfaces; Accessories therefor on valve members

Definitions

  • a centerless grinder for grinding a workpiece which comprises a head and a stem
  • the grinder comprising a base; a grinding wheel which rotates at high speed on the base to grind the stem; an adjusting wheel which rotates at speed lower than that of the grinding wheel on the base and is movable with respect to the grinding wheel, the workpiece being ground between opposing outer circumferential surfaces of the grinding and adjusting wheels; thrust means for thrusting the workpiece towards an end which is projected from the grinding wheel; and stopper means which has an engaged portion which rotates depending on rotation of the workpiece, the workpiece being supported by the engaged portion which is movable in an axial direction of the workpiece.
  • the output shaft 10 is engaged in the block 11.
  • the output shaft 10 is rotated by the motor 7, so that the block 11 and the engaged portion 14 are moved to a position suitable to grind the valve and engaged on the end face of the head 3b of the engine valve 3 which is thrusted leftward.
  • the engaged portion 14 is spherically borne by the stopper 13, and the end face of the engaged portion 14 is nearly perpendicular to the axis of the workpiece and is inclinable within a certain range of angle with respect to the axis of the valve.
  • a valve pressing device 16 for giving auxiliary thrust force to the engine valve 3 is provided on the opposite side to the stopper device 6.
  • the valve pressing device 16 comprises a motor 17 mounted on the support 2 of the base 1; a bevel gear mechanism 19 connected to the motor output shaft 18; a fine adjustment block 21 engaged with the output shaft 20 of the bevel gear mechanism 19; and an elongate thrust member 23 which is mounted to a shaft at the end of the fine adjustment block 21 and usually pressed by a spring 22.
  • an embodiment will be described in which not only the stem 3a but also valve face 3a of the head of the engine valve 3 is ground at the same time.
  • an additional grinding wheel 24 for grinding the valve face 3c may be added to the foregoing embodiment.
  • the grinding wheel 24 is rotatable by a motor(not shown), and is movable in X- and Y-directions on the base 1.
  • the additional grinding wheel 34 may be mounted to the shaft of the grinding wheel 4, so that both are rotated by one motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP95301796A 1994-03-30 1995-03-17 Spitzenlose Schleifmaschine Withdrawn EP0674970A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1995601414 DE69501414T2 (de) 1994-03-30 1995-03-22 Verfahren zum Bearbeiten eines Werkstückes
EP19950301920 EP0674971B1 (de) 1994-03-30 1995-03-22 Verfahren zum Bearbeiten eines Werkstückes

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP61470/94 1994-03-30
JP6147094 1994-03-30
JP27084094A JPH07314300A (ja) 1994-03-30 1994-11-04 心なし研削盤
JP270840/94 1994-11-04

Publications (1)

Publication Number Publication Date
EP0674970A1 true EP0674970A1 (de) 1995-10-04

Family

ID=26402503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95301796A Withdrawn EP0674970A1 (de) 1994-03-30 1995-03-17 Spitzenlose Schleifmaschine

Country Status (2)

Country Link
EP (1) EP0674970A1 (de)
JP (1) JPH07314300A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108145557B (zh) * 2017-12-21 2019-07-30 重庆千乔机电有限公司 阀门密封面打磨装置
KR102208228B1 (ko) * 2019-05-27 2021-01-26 최지환 엔진밸브용 연마 및 선삭장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1938764A (en) * 1931-04-02 1933-12-12 Cincinnati Grinders Inc Grinding machine
US3903655A (en) * 1974-12-16 1975-09-09 American Gage & Mach Grinding machine with resilient control wheel
DE4117494A1 (de) * 1991-05-28 1991-10-24 Nomoco Maschinenbau Gebrueder Verfahren und vorrichtung zum spitzenlosen schleifen von runden werkstuecken, insbesondere von ein- und auslassventilen fuer pkw-verbrennungskraftmaschinen zum gleichzeitigen schleifen des schaftdurchmessers und einer profilkontur, vorzugsweise ventiltellerkontur
EP0456590A1 (de) * 1990-05-07 1991-11-13 Serdi - Societe D'etudes De Realisation Et De Diffusion Industrielles Ventilkopf-Schleifgerät, insbesondere für einen Verbrennungsmotor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1938764A (en) * 1931-04-02 1933-12-12 Cincinnati Grinders Inc Grinding machine
US3903655A (en) * 1974-12-16 1975-09-09 American Gage & Mach Grinding machine with resilient control wheel
EP0456590A1 (de) * 1990-05-07 1991-11-13 Serdi - Societe D'etudes De Realisation Et De Diffusion Industrielles Ventilkopf-Schleifgerät, insbesondere für einen Verbrennungsmotor
DE4117494A1 (de) * 1991-05-28 1991-10-24 Nomoco Maschinenbau Gebrueder Verfahren und vorrichtung zum spitzenlosen schleifen von runden werkstuecken, insbesondere von ein- und auslassventilen fuer pkw-verbrennungskraftmaschinen zum gleichzeitigen schleifen des schaftdurchmessers und einer profilkontur, vorzugsweise ventiltellerkontur

Also Published As

Publication number Publication date
JPH07314300A (ja) 1995-12-05

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