EP0034659A1 - 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
EP0034659A1
EP0034659A1 EP80107763A EP80107763A EP0034659A1 EP 0034659 A1 EP0034659 A1 EP 0034659A1 EP 80107763 A EP80107763 A EP 80107763A EP 80107763 A EP80107763 A EP 80107763A EP 0034659 A1 EP0034659 A1 EP 0034659A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
spindle
feed
rotatable
lapping
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
EP80107763A
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German (de)
English (en)
Other versions
EP0034659B1 (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 control device for the processing pressure on lapping, honing and grinding machines.
  • 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.
  • the DE-AS 22 04 581 shows a control device for the B earbeitungstik on a lapping or honing machine, wherein said rotatable about its axis, the tool-carrying spindle is supported such in a slidable in the axial direction part, that it by him in the feed direction is portable, the processing pressure according to a calculated or empirically determined curve, for. B. is set 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 kept at an optimal value.
  • the spindle is carried by the displaceable part via resilient means which are connected to a device, the signals corresponding to the size of the relative movement of the spindle and displaceable part to a device for controlling the feed device accordingly the size of this relative movement there.
  • the spindle is rotatable in an axially parallel sleeve and is immovable relative to it in the axial direction, and this arrangement is preferably designed such that the sleeve can be moved relative to springs in the axial direction relative to springs and with a device for measuring them Movement is connected.
  • the sleeve can be mounted on a collar of the rotatable part via ball bearings and can be supported in both directions by springs in relation to the axially advanceable part.
  • the sleeve is preferably connected to a measuring device, in the output circuit of which there is a device for comparing the size of the measured values with a predetermined value, which in turn controls the feed force of the part that can be advanced.
  • the said sleeve has at least one region along its length which is elastically deformable by the force applied to it by the feed movement and which carries a strip whose electrical resistance changes when its length changes and which changes with that Input ines comparator is connected, through 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 19 29 518).
  • the lower lapping disk 2 is mounted in a stationary manner 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 is rotatable about its axis and movable 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.
  • two ball bearings 10, 11 are provided one behind the other, the bearing rings 13, 14 of which face one another on opposite sides of a collar 4a of the spindle 4, while the other bearing ring 12 of the ball bearing 10 is on the underside a flange 16a of a sleeve 16 arranged in a recess 7a. of the piston rod 7, which is concentric with it, and the other bearing ring 15 of the ball bearing 11 rests on the top of a ring 17, which is firmly connected to the sleeve 16.
  • Compression springs 18 lie between the top of the flange 16a and the radial upper wall 7b of the recess 7a; there are also compression springs 18a between the ring 17 and an annular disk 19 which closes the open end of the recess 7a. Between the sleeve 16 and the surface of the recess 7a parallel to it, there is a ball bushing 21 which reduces the friction between the sleeve 16 and the piston rod 7.
  • a carrier 22 is attached, which carries a length measuring device 23.
  • a stop 25 acts on the movable part 24 of the measuring device 23 and is attached to a ring 34 attached to the piston rod 7.
  • the stop 25 is formed as a part which is screwed onto a screw bolt 26 fastened to the ring 34, so that its distance from the ring 34 can be easily changed. The value determined by the measuring device 23 can then be used to control the pressure to be exerted on the piston 6.
  • the length measuring device 23 can work mechanically pneumatically, magnetically or hydraulically.
  • the piston rod 7 is surrounded between the ring 34 attached to its lower end and the lower closure 41 of the cylinder 8 (see FIG. 1) by a bellows 20 which protects its surface.
  • the length measuring device 23 continuously gives the comparator 36 a signal corresponding to the size of the measured value.
  • the comparator 36 compares this value with a predetermined value and gives the device 39, which determines the magnitude of the feed force acting on the piston rod 7, a signal for changing this force in accordance with the respective measured value.
  • the bearing 9 consists of two ball bearings 10, 11 and a roller bearing 27, which are located one behind the other.
  • 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 28 has an annular projection 29, aer between the rings 13 and 14 of the ball bearings 10 and 11 is seated.
  • the projection 29 is connected to the ends 28a and 28b of the sleeve 28 via thin-walled rings 30 and 31, each of which carries a strain gauge 32a or 32b on their outer sides.
  • the roller bearing 27 lies between the spindle 4 and a ring 33 located 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 connected via lines 35 (see FIG. 4) to an electrical comparator 36, in which the electrical signals given by them are compared with a signal of a predetermined size which can be set according to the conditions and which is supplied to the comparator by a device 37 .
  • the signal 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 always kept constant by means of the device 39, so that only the pressure in the piston chamber 8a is changed by the device 31 in accordance with the signal generated by the Relative movement of the spindle 4 and piston rod 7 is generated, for example by means of the measuring strips 32a, 32b or the measuring device 23.
  • the exemplary embodiments show arrangements in which the feed p by moving the disc carried Laep 3 with respect to the workpieces W.
  • the arrangement can also be made 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)
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
DE2950881A DE2950881C2 (de) 1979-12-18 1979-12-18 Steuereinrichtung für den Bearbeitungsdruck an Läpp-, Hon- und Schleißmaschinen
DE2950881 1979-12-18

Publications (2)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564360A1 (fr) * 1984-05-21 1985-11-22 Crismatec Machine d'usinage double face et dispositif de transmission de courant et de fluide entre une structure tournante et une structure non tournante
EP0344548A3 (fr) * 1988-05-28 1990-08-16 Peter Wolters Ag Méthode et appareillage pour le contrôle fu fonctionnement de machines à rôder ou rectifier
EP0393615A1 (fr) * 1989-04-19 1990-10-24 Kabushiki Kaisha Toshiba Dispositif de polissage
EP0481936A3 (en) * 1990-10-17 1992-08-26 Melchiorre Officina Meccanica S.R.L. Method of and apparatus for continuously controlling the pressure applied on workpieces in a double-plate lapping machine
EP0584843A3 (fr) * 1990-02-27 1994-05-04 Kabushiki Kaisha Toshiba Dispositif pour contrôler le force d'usinage d'un article

Families Citing this family (15)

* 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
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
WO1987000080A1 (fr) * 1985-06-24 1987-01-15 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
US5083401A (en) * 1988-08-08 1992-01-28 Mitsubishi Denki Kabushiki Kaisha Method of polishing
DE3925274A1 (de) * 1989-07-31 1991-02-07 Diskus Werke Frankfurt Main Ag Feinbearbeitungsmaschine zum laeppen, feinschleifen oder polieren
WO1991012113A1 (fr) * 1990-02-12 1991-08-22 P.R. Hoffman Machine Products Corporation Systeme de regulation de la force appliquee a une piece d'usinage par un element d'outil
AU5004997A (en) * 1996-10-28 1998-05-22 Hmt Technology Corporation Apparatus for polishing planar substrates between rotating plates
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2204581B2 (de) * 1972-02-01 1977-12-08 Wolters, Peter, 4020 Mettmann Steuereinrichtung fuer den bearbeitungsdruck einer laepp- oder honmaschine

Family Cites Families (11)

* 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
GB901875A (en) * 1958-12-22 1962-07-25 Hans Friedrich Bovensiepen An improved 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
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
DE1929518C3 (de) * 1969-06-11 1973-02-01 Diskus Werke Frankfurt Main Ag Regeleinrichtung fuer die Zustellung der Schleifwerkzeuge an Schleifmaschinen,insbesondere Flachschleifmaschinen
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2204581B2 (de) * 1972-02-01 1977-12-08 Wolters, Peter, 4020 Mettmann Steuereinrichtung fuer den bearbeitungsdruck einer laepp- oder honmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED Week B30, 5. September 1979 Section P61 & SU - A - 627 954 * Fig., Positionen 5,1 * *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564360A1 (fr) * 1984-05-21 1985-11-22 Crismatec Machine d'usinage double face et dispositif de transmission de courant et de fluide entre une structure tournante et une structure non tournante
US4665658A (en) * 1984-05-21 1987-05-19 Commissariat A L'energie Atomique Double face abrading machine and device for transmitting current and fluid between a rotary structure and a non-rotary structure
EP0344548A3 (fr) * 1988-05-28 1990-08-16 Peter Wolters Ag Méthode et appareillage pour le contrôle fu fonctionnement de machines à rôder ou rectifier
EP0393615A1 (fr) * 1989-04-19 1990-10-24 Kabushiki Kaisha Toshiba Dispositif de polissage
US5509847A (en) * 1990-01-09 1996-04-23 Kabushiki Kaisha Toshiba Control robot
EP0584843A3 (fr) * 1990-02-27 1994-05-04 Kabushiki Kaisha Toshiba Dispositif pour contrôler le force d'usinage d'un article
EP0481936A3 (en) * 1990-10-17 1992-08-26 Melchiorre Officina Meccanica S.R.L. Method of and apparatus for continuously controlling the pressure applied on workpieces in a double-plate lapping machine

Also Published As

Publication number Publication date
EP0034659B1 (fr) 1983-08-10
DE2950881A1 (de) 1981-06-25
DE2950881C2 (de) 1983-06-01
US4370835A (en) 1983-02-01

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