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EP0505787A2 - Dispositif pour l'ajustage d'une rectifieuse à commande CNC - Google Patents

Dispositif pour l'ajustage d'une rectifieuse à commande CNC Download PDF

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Publication number
EP0505787A2
EP0505787A2 EP92103823A EP92103823A EP0505787A2 EP 0505787 A2 EP0505787 A2 EP 0505787A2 EP 92103823 A EP92103823 A EP 92103823A EP 92103823 A EP92103823 A EP 92103823A EP 0505787 A2 EP0505787 A2 EP 0505787A2
Authority
EP
European Patent Office
Prior art keywords
workpiece
tool
probe
light barrier
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Withdrawn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
EP92103823A
Other languages
German (de)
English (en)
Other versions
EP0505787A3 (en
Inventor
Wolfgang Feldt
Dieter Laese
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.)
MSB Maschinenbau Schmitt
Original Assignee
MSB Maschinenbau Schmitt
MAN Roland Druckmaschinen AG
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 MSB Maschinenbau Schmitt, MAN Roland Druckmaschinen AG filed Critical MSB Maschinenbau Schmitt
Publication of EP0505787A2 publication Critical patent/EP0505787A2/fr
Publication of EP0505787A3 publication Critical patent/EP0505787A3/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Withdrawn legal-status Critical Current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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
    • 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
    • B24B49/02—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 according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent

Definitions

  • the invention relates to a device according to the preamble of patent claim 1.
  • the workpiece surface is touched with a grinding wheel.
  • sound or vibration measurements can then be carried out and the relative position thus obtained between the grinding wheel and the workpiece can be saved as a zero position.
  • the workpiece and grinding wheel are measured at the same time.
  • the measurement data processing for the desired purpose is relatively complex, but no measuring device is required in the work area. With this process, however, no absolute dimensions of the workpiece or tool can be recognized.
  • There is also a probing notch on the workpiece since a touch is necessary in order for the sensors to work to let.
  • the accessibility to the workpiece can be poor due to the grinding wheel radius.
  • the grinding wheel diameter can be detected contactlessly with the aid of a light barrier or it can also be determined via the position of the dressing system.
  • the workpiece is hereby approached to a defined probe or the probe is approached to the workpiece surface, and the deflection of the probe results in a measured value for the CNC control.
  • the diameter of the grinding wheel is recorded independently of this. Either a movement of the optical scanning device or a feed device for the grinding wheel is necessary for the detection of the grinding wheel diameter. It follows from both that the two measuring cycles must take place one after the other. Two measuring devices are also required.
  • the workpiece and grinding wheel outer contour can be detected with the aid of optical scanning devices, for example laser scanners, automatically calculated and brought to the machine control system by means of data transfer to generate NC data records.
  • the workpiece contour can be recorded in an upstream measuring station according to a predetermined program.
  • a second laser scanner detects the outer contour of the grinding wheel.
  • a new NC program can be generated from this geometry data in a computer and transferred to the CNC control. In this way, all deviations from the workpiece and grinding wheel geometry are recorded and can be compensated.
  • the measuring cycle can be carried out in parallel with the processing.
  • the setup involves a very high amount of hardware and software, which is very expensive. A measuring station with all NC axes is also necessary.
  • the object of the invention is therefore to create a simple device for the rapid and simultaneous detection of the position of the workpiece surface and grinding wheel contour, which avoids damage by scratching the surfaces of the tool and workpiece and works as collision-free as possible.
  • the object is achieved according to the characterizing part of patent claim 1.
  • the device now contains the probe elements for the workpiece and for the grinding wheel at the same time. This results in a very compact stylus.
  • the touch probe is also very inexpensive. The positioning does not require any special accuracy or particularly high stability, since this is given within the scanning element.
  • the touch probe itself does not require its own feed axis, i.e. instead of a controlled button, only a simple stylus is required. It also does not have to be coupled to one of the feed axes.
  • the advantages of the probe in terms of freedom from collisions are exploited and there is no contact notch. Only a single signal has to be processed, which also comes from the existing feed axis of the grinding tool or grinding wheel.
  • FIG. 1 An arrangement between a grinding wheel 1 and a workpiece 2 is shown by way of example in FIG. 1.
  • This workpiece 2 can contain an edge to be processed, such as a ridge G. If this is to be machined down to the workpiece outer contour K, its position must be defined in relation to the outer diameter of the grinding wheel 1.
  • the outer contour K of the workpiece 2 is programmed in a CNC control for one or more movement axes which generate the feed.
  • the feed movements are placed on the workpiece 2.
  • the first movement option is an axis of rotation as the feed axis 3, a linear movement axis as the feed axis 4 towards the grinding wheel 1 and a further linear movement axis as the feed axis 5 in the vertical direction parallel to the feed axis 3.
  • the feeler tool 6 (FIG. 2) consists of a support 7 to which a feeler pin 8 and a light barrier 9 are rigidly connected.
  • the light barrier 9 is fork-shaped so that it can grip around the grinding wheel contour.
  • the transmitter and receiver of the light barrier 9 are located in the two legs of the fork.
  • the stylus 8 and the light barrier 9 are fastened to a movable holder 10 via the carrier 7.
  • the light barrier 9 is connected to an evaluation circuit 15 which is assigned to the CNC control.
  • the evaluation circuit 15 is also connected to a measuring control 16 of the feed axis, which generates the distance movement between the grinding wheel 1 and workpiece 2.
  • the signal which arises when the light barrier 9 is interrupted is then fed via the evaluation circuit 15 to the CNC control and for the storage of those coming from the measurement control 16 Signals used in connection with the relative position of grinding wheel 1 and workpiece 2.
  • the bracket 10 is formed from a pivot arm 11 and a support arm 12 connected thereto.
  • the swivel arm 11 is displaceable in the direction of its longitudinal axis or swivel axis.
  • the swivel axis is parallel to the feed axis 4 of the workpiece 2.
  • the support arm 12 is fastened perpendicular to its longitudinal axis. It can also be adjusted in its longitudinal direction.
  • the probe tool 6 is attached. Its orientation with respect to the features to be felt lies in the direction of the feed axis 4.
  • the holder 10 can be automatically moved into the working space between the grinding wheel 1 and the workpiece 2.
  • the function of the device can be described as follows:
  • the feeler tool 6 is pivoted on the holder 10 by rotation about the swivel arm 11 from a rest position into the working space between the grinding wheel 1 and workpiece 2.
  • the feeler tool 6 can be lowered into its fixed working position with the aid of the support arm 12.
  • the swivel arm 11 is uncoupled from its drive, so that it can be moved freely in the direction of the swivel axis.
  • the stylus 8 can be adjusted to the height of the outer contour K to be scanned, ie an area next to the ridge G.
  • the workpiece 2 is moved in the direction of the feed axis 4 up to the feeler tool 6.
  • the stylus 6 is moved in the direction of the grinding wheel 1, since the swivel arm 11 is also freely movable in its longitudinal direction.
  • the detection of the grinding wheel 1 takes place when the light barrier 9 is interrupted, when the outer contour S Grinding wheel 1 is reached.
  • the feed drive is stopped and at the same time a measurement is available from the measurement control 16 of the feed axis 4, which, triggered by the interruption of the light barrier 9 and monitored by the evaluation circuit 15, is stored in the CNC control.
  • a measure of the position of the outer contour S of the grinding wheel 1 is available via measuring devices which are provided for detecting the movement of the feed axis 4. Since there is a precisely defined, unchangeable distance A between the stylus 8 and the light barrier 9, the zero position of the workpiece feed in relation to the current outer contour S of the grinding wheel 1 can be found directly by calculation from the now known relative position between the grinding wheel 1 and the workpiece 2.
  • a measuring cycle must precede the actual probing process.
  • a probing process is carried out in a known manner as described above, but the stylus 8 does not rest directly on the workpiece 2, but rather on a fixed stop 14 additionally present on a workpiece holder 13.
  • the distance dimension of the fixed stop 14 in relation to the feed axis 4 is exactly known. In this position, the position of the stylus 8 in the work area is then known exactly.
  • the exact diameter of the grinding wheel 1 can also be determined. After the grinding wheel diameter has been determined, the workpiece 2 on its outer contour K can again be accurately measured by a scanning operation in accordance with the sequence described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP19920103823 1991-03-28 1992-03-06 Apparatus for the adjustment of a cnc-control grinding machine Withdrawn EP0505787A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4110209 1991-03-28
DE4110209A DE4110209C2 (de) 1991-03-28 1991-03-28 Vorrichtung zur Justierung einer CNC-gesteuerten Schleifmaschine

Publications (2)

Publication Number Publication Date
EP0505787A2 true EP0505787A2 (fr) 1992-09-30
EP0505787A3 EP0505787A3 (en) 1993-02-24

Family

ID=6428399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920103823 Withdrawn EP0505787A3 (en) 1991-03-28 1992-03-06 Apparatus for the adjustment of a cnc-control grinding machine

Country Status (3)

Country Link
US (1) US5184428A (fr)
EP (1) EP0505787A3 (fr)
DE (1) DE4110209C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995009714A1 (fr) * 1992-10-05 1995-04-13 Pratt & Whitney, United Technologies Corporation Polissage automatique de surfaces planes et non planes
EP4467285A1 (fr) * 2023-05-23 2024-11-27 Adelbert Haas GmbH Meuleuse et procédé de fonctionnement d'une rectifieuse

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4301486C1 (de) * 1993-01-21 1994-03-24 Norbert Dipl Ing Lamers Vorrichtung zur automatischen Kompensation von Ungenauigkeiten an Schleifmaschinen
US5628673A (en) * 1993-11-26 1997-05-13 Seiko Seiki Kabushiki Kaisha Dicing machine with non-contact setup function
DE19630057C1 (de) * 1996-07-25 1997-09-18 Vollmer Werke Maschf Maschine zum Bearbeiten von Werkstücken mit Schneidzähnen
US8310442B2 (en) 2005-02-23 2012-11-13 Pixtronix, Inc. Circuits for controlling display apparatus
US8159428B2 (en) 2005-02-23 2012-04-17 Pixtronix, Inc. Display methods and apparatus
US9229222B2 (en) 2005-02-23 2016-01-05 Pixtronix, Inc. Alignment methods in fluid-filled MEMS displays
US20070205969A1 (en) * 2005-02-23 2007-09-06 Pixtronix, Incorporated Direct-view MEMS display devices and methods for generating images thereon
US9158106B2 (en) * 2005-02-23 2015-10-13 Pixtronix, Inc. Display methods and apparatus
US7999994B2 (en) 2005-02-23 2011-08-16 Pixtronix, Inc. Display apparatus and methods for manufacture thereof
US8519945B2 (en) * 2006-01-06 2013-08-27 Pixtronix, Inc. Circuits for controlling display apparatus
US9082353B2 (en) * 2010-01-05 2015-07-14 Pixtronix, Inc. Circuits for controlling display apparatus
US9261694B2 (en) 2005-02-23 2016-02-16 Pixtronix, Inc. Display apparatus and methods for manufacture thereof
US8482496B2 (en) * 2006-01-06 2013-07-09 Pixtronix, Inc. Circuits for controlling MEMS display apparatus on a transparent substrate
EP1747846A1 (fr) * 2005-07-25 2007-01-31 Rollomatic S.A. Procédé et dispositif de mesure de la géometrie d'une arête de coupe à chanfreiner
SE529606C2 (sv) 2006-02-10 2007-10-02 Tj Utveckling Ab Verktygsinställare för en slipmaskin
US8526096B2 (en) 2006-02-23 2013-09-03 Pixtronix, Inc. Mechanical light modulators with stressed beams
US9176318B2 (en) * 2007-05-18 2015-11-03 Pixtronix, Inc. Methods for manufacturing fluid-filled MEMS displays
US8169679B2 (en) 2008-10-27 2012-05-01 Pixtronix, Inc. MEMS anchors
US20110205259A1 (en) * 2008-10-28 2011-08-25 Pixtronix, Inc. System and method for selecting display modes
US20100248594A1 (en) * 2009-03-31 2010-09-30 Darrel Nish Setup tool for grinder sharpening jigs
BR112012019383A2 (pt) * 2010-02-02 2017-09-12 Pixtronix Inc Circuitos para controlar aparelho de exibição
IT1398656B1 (it) * 2010-03-08 2013-03-08 Tecnema Societa A Responsabilita Limitata Macchina per la rettifica di elementi lastriformi, particolarmente piastrelle e lastre in materiale ceramico, pietre naturali, vetro o simili
WO2011107872A1 (fr) 2010-03-05 2011-09-09 Tecnema Societa' A Responsabilita' Limitata Machine pour l'usinage mécanique d'éléments en forme de plaque, en particulier des carreaux et des dalles en céramique, pierres naturelles, verre ou matériaux similaires
US9134552B2 (en) 2013-03-13 2015-09-15 Pixtronix, Inc. Display apparatus with narrow gap electrostatic actuators
US10946498B2 (en) * 2015-11-10 2021-03-16 Abb Schweiz Ag Method and system for machining, and a robot system
US10144111B2 (en) 2016-05-05 2018-12-04 Joseph Peter Gasparino, Jr. Bench grinder safety and monitoring system
CN112247741B (zh) * 2020-09-25 2022-04-08 深圳市裕展精密科技有限公司 校准系统、校准方法及校准装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH585609A5 (fr) * 1975-04-09 1977-03-15 Meseltron Sa
DE3221381A1 (de) * 1982-06-05 1983-12-08 Ernst Prof. Dr.-Ing. 3300 Braunschweig Saljé Vorrichtung zum messen von maschinenfehlern
US4679358A (en) * 1986-03-20 1987-07-14 Amsted Industries Incorporated Grinding wheel advancing apparatus
DE3743275C1 (de) * 1987-12-19 1989-07-27 Thielenhaus Maschf Verfahren zum Planschleifen von gleichen Werkstueck-Rohlingen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995009714A1 (fr) * 1992-10-05 1995-04-13 Pratt & Whitney, United Technologies Corporation Polissage automatique de surfaces planes et non planes
EP4467285A1 (fr) * 2023-05-23 2024-11-27 Adelbert Haas GmbH Meuleuse et procédé de fonctionnement d'une rectifieuse

Also Published As

Publication number Publication date
DE4110209C2 (de) 1993-11-18
DE4110209A1 (de) 1992-10-01
US5184428A (en) 1993-02-09
EP0505787A3 (en) 1993-02-24

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