EP0559935A1 - Hilfsvorrichtung für Schleifmaschinen - Google Patents

Hilfsvorrichtung für Schleifmaschinen Download PDF

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Publication number
EP0559935A1
EP0559935A1 EP92104173A EP92104173A EP0559935A1 EP 0559935 A1 EP0559935 A1 EP 0559935A1 EP 92104173 A EP92104173 A EP 92104173A EP 92104173 A EP92104173 A EP 92104173A EP 0559935 A1 EP0559935 A1 EP 0559935A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
grinding
ring
internal
auxiliary device
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.)
Granted
Application number
EP92104173A
Other languages
English (en)
French (fr)
Other versions
EP0559935B1 (de
Inventor
Mordechai Ronen
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.)
Voumard Machines Co SA
Etm Engineers' Tool Manufacturing Co Ltd
Original Assignee
Voumard Machines Co SA
Etm Engineers' Tool Manufacturing 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 Voumard Machines Co SA, Etm Engineers' Tool Manufacturing Co Ltd filed Critical Voumard Machines Co SA
Priority to AT92104173T priority Critical patent/ATE138597T1/de
Priority to DE69211119T priority patent/DE69211119T2/de
Priority to ES92104173T priority patent/ES2090386T3/es
Priority to EP92104173A priority patent/EP0559935B1/de
Publication of EP0559935A1 publication Critical patent/EP0559935A1/de
Application granted granted Critical
Publication of EP0559935B1 publication Critical patent/EP0559935B1/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
    • 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
    • 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
    • B24B5/06—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 internally

Definitions

  • the present invention relates to an auxiliary member for use in connection with grinding machinery and more particularly for grinding the internal bore, i.e. the lumen of hollow workpieces which are also of external circular cross-section.
  • the system and device according to the invention is a new concept of clamping, driving and grinding for internal grinding machines where the system makes it possible to clamp and drive the workpiece on an internal grinding machine between two dead centres on the workpiece's axis as is known and used in outside grinding operations or other machining processes.
  • the advantage of employing the new auxiliary device resides therein, that it permits the use of the same base and data point for the two grinding operations and as a consequence to attain precision and coincidence of the central axes of the two circles ascribing the outer periphery and that of the lumen of the workpiece.
  • a further advantage of the use of the auxiliary device is the fact that an operator is free to attend to the external surface of the workpiece first and then to the internal wall of the bore, or vice versa.
  • the new system is based on "hollow conical centre ring" which is used to clamp the workpiece on one end or side and a dead centre on the other end or side of the workpiece with different driving rings or fingers to drive the workpiece.
  • the "hollow conical centre ring” which is mounted in a steady rest on the internal grinding machine table, aligned and centred with the machine workpiece driving centre, clamps the workpiece by using the internal bore to be ground as a centre point, while still making it possible to perform internal grinding on the inner diameter through the "hollow conical centre ring".
  • a recess should be ground on the cone of the "hollow conical centre ring” with the internal grinding wheel for which the diameter is never more than two thirds of the workpiece bore to be ground, leaving at least two thirds of the cone of the "hollow conical centre ring” for the workpiece clamping and making it possible to clamp the workpiece with enough rigidity to perform the necessary precision grinding operation.
  • This system is applicable to most of the existing internal grinding machines by simple adaptors and it also can be used in light and precision bore tuning operations on lathes and other machines.
  • the new device consists of an at least partly exteriorily conical ring having an external circumferentially extending flange or ridge, such that the axial cross section of the said conical portion is that of a frustum of a cone.
  • the forward part of said conical portion has a cut-out of about 30 o of the circumference.
  • a recess is provided on the internal wall of the new ring device extending up to about one third of the circumference of the circular internal wall of the device (i.e. up to about 120 o ).
  • the extension of the arcuate recess will be about 30 o , the said recess serving to facilitate the introduction of a grinding wheel into the internal space of the device.
  • the ring which rests on a steadying support is introduced with the smaller circumferential edge of the frustum into the lumen of the workpiece whose opposite end is turnably held by a dead-center of the machine arid is in driving contact with an appropriately driving ring and finger.
  • the machine comprises in a conventional manner, a chucking cylinder 1, which includes a shaft 1', terminating in dead center 2. There is provided a transmission gear 7 and a driving mechanism 6 for imparting rotational movement to a workpiece 8. The necessary drive is provided by an electromotor 9. All these parts arid their function is known and requires no further detailed description.
  • the new device shown in Figures 1, 2 and 3 consists of a partly frustoconically shaped ring 4 which is surrounded by a circumferential ridge 4' positioned intermediate the two edge faces of the ring.
  • the frustoconical portion marked 4'' of ring 4 extends on the forward part of it and is delimited by the said ridge 4'.
  • Fig. 1 there exists a cut-out 4'' ' in the forward portion 4''.
  • the smaller peripheral edge face of ring 4 enters the circular lumen of the workpiece, the ring being fixedly supported on a steadying support 3.
  • tie grinding tool 5 fixed on a spindle 5' and driven in a generally known way is carried with its drive on a hydraulic table and can be brought to enter the interior of the workpiece to be ground, traversing the inner space of ring 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Turning (AREA)
EP92104173A 1992-03-11 1992-03-11 Hilfsvorrichtung für Schleifmaschinen Expired - Lifetime EP0559935B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT92104173T ATE138597T1 (de) 1992-03-11 1992-03-11 Hilfsvorrichtung für schleifmaschinen
DE69211119T DE69211119T2 (de) 1992-03-11 1992-03-11 Hilfsvorrichtung für Schleifmaschinen
ES92104173T ES2090386T3 (es) 1992-03-11 1992-03-11 Elemento auxiliar para rectificadoras.
EP92104173A EP0559935B1 (de) 1992-03-11 1992-03-11 Hilfsvorrichtung für Schleifmaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92104173A EP0559935B1 (de) 1992-03-11 1992-03-11 Hilfsvorrichtung für Schleifmaschinen

Publications (2)

Publication Number Publication Date
EP0559935A1 true EP0559935A1 (de) 1993-09-15
EP0559935B1 EP0559935B1 (de) 1996-05-29

Family

ID=8209421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92104173A Expired - Lifetime EP0559935B1 (de) 1992-03-11 1992-03-11 Hilfsvorrichtung für Schleifmaschinen

Country Status (4)

Country Link
EP (1) EP0559935B1 (de)
AT (1) ATE138597T1 (de)
DE (1) DE69211119T2 (de)
ES (1) ES2090386T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3310530B1 (de) * 2015-06-17 2022-11-09 Erwin Junker Maschinenfabrik GmbH Verfahren und schleifmaschine zum schleifen von aussen- und innenkonturen von werkstücken in einer aufspannung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107457684A (zh) * 2017-08-28 2017-12-12 朱炳和 一种便于装卸工件的珩磨夹具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1818084A (en) * 1928-05-03 1931-08-11 Bohn Aluminium & Brass Corp Method of grinding
FR1142202A (fr) * 1955-04-07 1957-09-16 Ulvsunda Verkst Er Aktiebolag Porte-pièces pour rectifieuse sans centre
GB1021545A (en) * 1961-09-01 1966-03-02 Ulvsunda Verkst Er Aktiebolag A method of and apparatus for grinding annular workpieces

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1818084A (en) * 1928-05-03 1931-08-11 Bohn Aluminium & Brass Corp Method of grinding
FR1142202A (fr) * 1955-04-07 1957-09-16 Ulvsunda Verkst Er Aktiebolag Porte-pièces pour rectifieuse sans centre
GB1021545A (en) * 1961-09-01 1966-03-02 Ulvsunda Verkst Er Aktiebolag A method of and apparatus for grinding annular workpieces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3310530B1 (de) * 2015-06-17 2022-11-09 Erwin Junker Maschinenfabrik GmbH Verfahren und schleifmaschine zum schleifen von aussen- und innenkonturen von werkstücken in einer aufspannung

Also Published As

Publication number Publication date
DE69211119T2 (de) 1997-01-23
DE69211119D1 (de) 1996-07-04
ATE138597T1 (de) 1996-06-15
EP0559935B1 (de) 1996-05-29
ES2090386T3 (es) 1996-10-16

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