EP0034659B1 - Dispositif pour commander la charge d'usinage pour machines de finition, de rodage ou de meulage - Google Patents

Dispositif pour commander la charge d'usinage pour machines de finition, de rodage ou de meulage Download PDF

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Publication number
EP0034659B1
EP0034659B1 EP80107763A EP80107763A EP0034659B1 EP 0034659 B1 EP0034659 B1 EP 0034659B1 EP 80107763 A EP80107763 A EP 80107763A EP 80107763 A EP80107763 A EP 80107763A EP 0034659 B1 EP0034659 B1 EP 0034659B1
Authority
EP
European Patent Office
Prior art keywords
lapping
spindle
honing
feed
pressure
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
Application number
EP80107763A
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German (de)
English (en)
Other versions
EP0034659A1 (fr
Inventor
Christian Von Schneidemesser
Paul Gerhard Nowotka
Gerhard Rüdel
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.)
Peter Wolters Maschinenfabrik
Original Assignee
Peter Wolters Maschinenfabrik
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 Peter Wolters Maschinenfabrik filed Critical Peter Wolters Maschinenfabrik
Publication of EP0034659A1 publication Critical patent/EP0034659A1/fr
Application granted granted Critical
Publication of EP0034659B1 publication Critical patent/EP0034659B1/fr
Expired 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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
    • B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
    • B24B37/08—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for double side lapping
    • 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
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/16—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load

Definitions

  • the invention relates to a device for controlling the processing pressure according to the preamble of claim 1 (DE-A-2 204 581)
  • the pressure exerted by the tool i.e. the lapping, honing or grinding wheel, on the surface of the workpiece or workpieces is of essential importance. If the pressure is too high, there is a risk of the desired quality of the surface being impaired, if necessary the workpiece and tool being cold-welded, in the case of lapping machines the lapping film containing the lapping grain is torn off; too little pressure results in unnecessarily long processing times and increased processing costs.
  • DE-AS 22 04 581 shows a control device for the processing pressure on a lapping or honing machine, in which the spindle, which rotates about its axis and carries the tool, is mounted in a part which is displaceable in the axial direction in such a way that it is supported by it via resilient means can be taken along in the feed direction, the machining pressure being based on a calculated or empirically determined curve, for example by means of an appropriate template.
  • Such controls can only be carried out according to certain values, which often differ significantly from the conditions actually occurring during operation.
  • the object of the invention is to design a device of the aforementioned type so that the pressure of the tool on the workpiece is always automatically kept at an optimal value.
  • this object is achieved in that the spindle is rotatably mounted in an axially parallel sleeve which is arranged in the part which can be pushed forward and has at least one area along its length which is elastically deformable by the force applied to it by the feed movement and a strip carries, whose electrical resistance changes when its length changes, and which is connected to the input of a comparator by which the feed force of the advanceable part is controlled.
  • strain gauges for measuring the feed in a grinding machine is basically known (DE-AS 1929518).
  • the drawing shows an embodiment of such a bearing according to the invention using a two-disc lapping machine.
  • the lower lapping disc 2 is mounted in a fixed position and driven by a motor M via a belt drive R2.
  • the upper lapping disk 3 is located at the lower end of a vertical spindle 4, which is driven by the same motor M via a belt drive R3 in the opposite sense to the lower lapping disk 2.
  • the upper end of the spindle 4 is mounted in a bearing 5 arranged on the machine frame in such a way that it can be rotated about its axis and can be moved in its axial direction.
  • the spindle 4 is also mounted just above the lapping disk 3 in a bearing 9 inside the hollow piston rod 7 of a piston 6, which is movable in a cylinder 8 in the vertical direction.
  • the bearing 9 consists of two ball bearings 10, 11 and a roller bearing 27, which lie one behind the other.
  • the rings 13 and 14 are connected to the spindle 4.
  • the rings 13 and 14 are connected to the piston rod 7 via a sleeve 28 which sits immovably in a recess 7a of the piston rod 7.
  • the inner wall of the sleeve 28 has an annular projection 29 which sits between the rings 13 and 14 of the ball bearings 10 and 11.
  • the projection 29 is connected to the ends 28a and 28b of the sleeve 28 via thin-walled rings 30 and 31, which are so thin that they are deformed in the direction of the arrow P when subjected to a load, and on their outer sides a strain gauge 32a and 32b, respectively wear.
  • the roller bearing 27 lies between the spindle 4 and a ring 33 lying in the outer opening of the recess 7a of the piston rod 7. The ring 33 and the bearing 27 are held in the axial direction by the plate 19 screwed onto the piston rod 7.
  • the strain gauge 32b is subjected to tension, the strain gauge 32a to pressure.
  • the strain gauges 32a and 32b are via lines 35 (see FIG. 3) with an electrical comparator and a signal 37 supplied with a predetermined signal which can be set in accordance with the conditions.
  • the signal thus given by the comparator 37 is fed to a device 38, in which the signal is converted into a signal for controlling a device 39 (see also FIG.
  • the pressure in the piston chamber 8b is preferably always kept constant by means of the device 39, so that the device 31 merely changes the pressure in the piston chamber 8a in accordance with the signal which is generated by the relative movement of the spindle 4 and the piston rod 7, for example by means of the measuring strip 32a, 32b or the measuring device 23.
  • the arrangement can also be such that the feed takes place by moving the lower lapping disk 1 carrying the workpieces upwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Claims (1)

  1. Dispositif de commande de la pression de travail dans des machines à roder, à pierrer et à rectifier, dont l'axe porte-outil pivotant autour de son axe est monté dans une pièce pouvant avancer en direction axiale de telle manière qu'il peut être entrainé par ladite pièce en direction d'avancement par un moyen élastique, caractérisé par le fait que l'axe (4) est monté pivotant dans une douille (16) disposée dans la pièce (7) pouvant avancer, ladite douille (16) présentant sur sa longueur au moins une zone (19, 30) déformable élastiquement sous l'effet de la force appliquée sur elle par le déplacement d'avancement et portant une bande (31, 32) dont la résistance élastique se modifie lors d'un changement de sa longueur et qui est reliée à l'entrée d'un comparateur (36) par lequel la force d'avancement de la pièce (7) pouvant avancer est commandée.
EP80107763A 1979-12-18 1980-12-10 Dispositif pour commander la charge d'usinage pour machines de finition, de rodage ou de meulage Expired EP0034659B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2950881 1979-12-18
DE2950881A DE2950881C2 (de) 1979-12-18 1979-12-18 Steuereinrichtung für den Bearbeitungsdruck an Läpp-, Hon- und Schleißmaschinen

Publications (2)

Publication Number Publication Date
EP0034659A1 EP0034659A1 (fr) 1981-09-02
EP0034659B1 true EP0034659B1 (fr) 1983-08-10

Family

ID=6088805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107763A Expired EP0034659B1 (fr) 1979-12-18 1980-12-10 Dispositif pour commander la charge d'usinage pour machines de finition, de rodage ou de meulage

Country Status (3)

Country Link
US (1) US4370835A (fr)
EP (1) EP0034659B1 (fr)
DE (1) DE2950881C2 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58192720A (ja) * 1982-04-28 1983-11-10 Inoue Japax Res Inc 放電加工装置
US4545153A (en) * 1983-12-12 1985-10-08 Charlton Associates Force sensor for controlling polishing pad pressure
FR2564360B1 (fr) * 1984-05-21 1986-10-17 Crismatec Machine d'usinage double face et dispositif de transmission de courant et de fluide entre une structure tournante et une structure non tournante
DE3520713A1 (de) * 1985-06-10 1986-12-11 Fa. Peter Wolters, 2370 Rendsburg Steuervorrichtung fuer den bearbeitungsdruck an laepp-, hon- und poliermaschinen
US4662348A (en) * 1985-06-20 1987-05-05 Megadiamond, Inc. Burnishing diamond
EP0227651A1 (fr) * 1985-06-24 1987-07-08 Sii Megadiamond, Inc. Procede et appareil permettant le brunissage de diamants et du nitrure de bore cubique et de ses produits
DE3600364A1 (de) * 1986-01-09 1987-07-16 Rexroth Mannesmann Gmbh Verfahren und vorrichtung zum ausgleich des auf einen hydraulischen antrieb wirkenden veraenderlichen gewichtes einer masse, insbesondere fuer den senkrecht stehenden antriebszylinder einer laeppmaschine
DK155299B (da) * 1986-04-18 1989-03-20 Struers As Apparat til slibning eller polering af emner
US4763448A (en) * 1987-05-11 1988-08-16 Junichi Yoshioka Centerless grinding machine
DE3818159A1 (de) * 1988-05-28 1989-11-30 Wolters Peter Fa Verfahren und vorrichtung zur steuerung des betriebs von hon- oder schleifmaschinen
US5083401A (en) * 1988-08-08 1992-01-28 Mitsubishi Denki Kabushiki Kaisha Method of polishing
JP2977203B2 (ja) * 1989-04-19 1999-11-15 株式会社東芝 研磨装置
DE3925274A1 (de) * 1989-07-31 1991-02-07 Diskus Werke Frankfurt Main Ag Feinbearbeitungsmaschine zum laeppen, feinschleifen oder polieren
AU7347191A (en) * 1990-02-12 1991-09-03 P.R. Hoffman Machine Products Corporation System for controlling the force applied to a workpiece by a tool element
EP0444657B1 (fr) * 1990-02-27 1996-02-07 Kabushiki Kaisha Toshiba ContrÔle de robot
IT1244131B (it) * 1990-10-17 1994-07-08 Melchiorre Off Mecc Metodo e dispositivo per il controllo continuo della spinta applicata sui pezzi in lavorazione in una macchina lappatrice a doppio plateau.
WO1998019301A1 (fr) * 1996-10-28 1998-05-07 Hmt Technology Corporation Appareil pour le polissage de substrats plans entre des plaques rotatives
EP0868968B1 (fr) * 1997-03-31 2003-02-19 Nippei Toyama Corporation Rectifieuse et procédé de rectification
JP2000006005A (ja) * 1998-06-22 2000-01-11 Speedfam Co Ltd 両面研磨装置
CN112109012B (zh) * 2020-09-06 2022-03-11 安徽誉林汽车部件有限公司 一种自动测量应力的汽车橡胶衬套夹持装置及夹持方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035377A (en) * 1958-12-22 1962-05-22 Bovensiepen Hans-Friedrich Lapping machine
US3274738A (en) * 1964-02-13 1966-09-27 Heald Machine Co Grinding machine
CH471639A (de) * 1967-04-29 1969-04-30 Elektromat Veb Steuereinrichtung für eine Käfigläppmaschine
DE1929518B2 (de) * 1969-06-11 1972-07-06 Diskus Werke Frankfurt Am Main Ag, 6000 Frankfurt Regeleinrichtung fuer die zustellung der schleifwerkzeuge an sc

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2085005A (en) * 1936-07-06 1937-06-29 Norton Co Lapping machine
US2227697A (en) * 1938-01-14 1941-01-07 Heald Machine Co Tool head for grinding machines and the like
US2618911A (en) * 1950-07-08 1952-11-25 Norton Co Lapping machine
US3100954A (en) * 1962-03-20 1963-08-20 Lella Paul Di Grinding machine
US3209498A (en) * 1963-07-09 1965-10-05 Albert H Dall Machine tool rigidity control mechanism
DE2204581B2 (de) * 1972-02-01 1977-12-08 Wolters, Peter, 4020 Mettmann Steuereinrichtung fuer den bearbeitungsdruck einer laepp- oder honmaschine
US3939610A (en) * 1973-07-30 1976-02-24 Shatai Kogiyo Co. Ltd. Device and method of grinding metallic molds and products automatically
JPS5316949B2 (fr) * 1973-09-17 1978-06-05

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035377A (en) * 1958-12-22 1962-05-22 Bovensiepen Hans-Friedrich Lapping machine
US3274738A (en) * 1964-02-13 1966-09-27 Heald Machine Co Grinding machine
CH471639A (de) * 1967-04-29 1969-04-30 Elektromat Veb Steuereinrichtung für eine Käfigläppmaschine
DE1929518B2 (de) * 1969-06-11 1972-07-06 Diskus Werke Frankfurt Am Main Ag, 6000 Frankfurt Regeleinrichtung fuer die zustellung der schleifwerkzeuge an sc

Also Published As

Publication number Publication date
US4370835A (en) 1983-02-01
EP0034659A1 (fr) 1981-09-02
DE2950881C2 (de) 1983-06-01
DE2950881A1 (de) 1981-06-25

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