EP0112320A2 - Einrichtung zum Profilieren einer Schleifscheibe - Google Patents

Einrichtung zum Profilieren einer Schleifscheibe Download PDF

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Publication number
EP0112320A2
EP0112320A2 EP83870127A EP83870127A EP0112320A2 EP 0112320 A2 EP0112320 A2 EP 0112320A2 EP 83870127 A EP83870127 A EP 83870127A EP 83870127 A EP83870127 A EP 83870127A EP 0112320 A2 EP0112320 A2 EP 0112320A2
Authority
EP
European Patent Office
Prior art keywords
tools
cutting
dressing
barrel
profiling
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Withdrawn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
EP83870127A
Other languages
English (en)
French (fr)
Other versions
EP0112320A3 (de
Inventor
Henri Willot
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.)
Sa Recherches Et De Developpement Industriel (so Re Di) Ste
Original Assignee
Sa Recherches Et De Developpement Industriel (so Re Di) Ste
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 Sa Recherches Et De Developpement Industriel (so Re Di) Ste filed Critical Sa Recherches Et De Developpement Industriel (so Re Di) Ste
Publication of EP0112320A2 publication Critical patent/EP0112320A2/de
Publication of EP0112320A3 publication Critical patent/EP0112320A3/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Withdrawn legal-status Critical Current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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/12—Dressing tools; Holders therefor
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0061—Other grinding machines or devices having several tools on a revolving tools box
    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/36—Machine including plural tools
    • Y10T408/37—Turret of tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T483/00—Tool changing
    • Y10T483/15—Tool changing with means to condition or adjust tool or tool support

Definitions

  • the present invention relates to an apparatus for profiling, straightening or refining with precision a grinding wheel of abrasives by cutting using diamond tools with separate profiling, this apparatus being able to be mounted on the grinding head or possibly the work table. of a grinding machine whatever the functions of rectification of the latter.
  • the invention relates above all to an apparatus making it possible to straighten with precision and speed an abrasive wheel according to difficult and precise contours, this wheel being intended to ensure a perfect finish, by grinding, of the parts machined using a planer. , a vice-file, a mortiser, a milling machine or a lathe by correcting an extra thickness provided during machining to compensate for possible deformations that would result from a subsequent thermal or chemical treatment of the workpiece , for example quenching or case hardening of said part.
  • Apparatuses for profiling an abrasive wheel are known using profiling diamonds carried by two separate dressing arms of a turret with two positions, one of the diamonds being intended for roughing the profile of the grinding wheel, the other at the end of this profile.
  • profiling diamonds carried by two separate dressing arms of a turret with two positions, one of the diamonds being intended for roughing the profile of the grinding wheel, the other at the end of this profile.
  • These known devices can be mounted on a spindle chassis of a grinding machine.
  • pivoting straightening arms makes it possible to correctly choose for each operation the appropriate diamond cutting tool, for example for roughing of the profile of the grinding wheel, leaving a sufficient excess thickness only to absorb the surface irregularities due to the grazing of the grinding wheel.
  • This split of dressing of the grinding wheel in two stages makes it possible to reduce the duration of dressing and to extend the service life of diamond cutting tools.
  • pivoting training arms have the major drawback of having a large overhang. This overhang constitutes a significant obstacle to ensure a set-up without play and precise guidance of each of the diamond tools.
  • pivoting arms require the presence of a turret carriage, intended to slide either directly on the bench, or on a midsole.
  • the various positions of the turret are not determined by longitudinal and transverse stops, but rather by microswitches connected to a relay system making it possible to fix all the sources and fix the continuation of the operations.
  • the advancement and translation mechanisms of the straightening arms carried by the turret itself mounted on the turret carriage are hydraulically controlled and are actuated in response to a profiling and straightening order, transmitted by a probing needle traversing a template and by a pantograph system.
  • the transmission ratio is generally one tenth or one fifth compared to the gauge.
  • Measuring instruments consisting for example of a control balance and a comparator, allow the diamonds to be adjusted relative to the axis of rotation of the abrasive wheel.
  • the present invention aims to remedy the aforementioned drawbacks and proposes a particular dressing head which provides the cutting tool with increased rigidity. It relates to an apparatus for profiling, dressing or re-finishing with precision a grinding wheel of hard abrasives by cutting using diamond tools with distinct profiles each carried by a dressing arm, this apparatus being able to be mounted on the grinding head.
  • a grinder and being essentially characterized in that it comprises an a straightening head comprises a barrel provided with a series of separate retractable each diamond tools mounted slidably in a cavity of said barrel for rotating repeatedly , each time at an angle equal to that between two neighboring tools and to be rigidly locked in each of the positions so as to bring successively, with precision and perfect repeatability each of the tools in a predetermined position opposite the dressing station of the wheel.
  • each of the cutting tools is brought to the dressing station by pivoting the barrel and by translation using a rod and a jack ensuring the intake and lifting of the tool of cutting.
  • Each of the cutting tools, straight, oblique or flat advantageously have a well-defined orientation.
  • the apparatus comprises a computer provided with a keyboard for manual introduction of metric data allowing the positioning of each of the cutting tools at the reference point, the introduction into the part program memory with automatic generation of a sequence number, the incremental introduction of metric data supplied by an incremental measuring device formed of very high precision and comprising a programmer fixing the sequence of operations in automatic cycle for serial work.
  • a profiling apparatus comprises a tool-carrying carriage 1 on which is mounted a dressing head designated as a whole by the reference notation 2 with six stations with immediate indexing in both directions .
  • the tool carriage 1 can move transversely to an unmounted work table of a grinding machine, along a slide 3 by driving with a ball screw 4 of the SKF VIS TRANSROL 12 x 2 type controlled by a pulley 5 and an electric motor 6.
  • the threaded rod 4 is mounted on two NADELLA needle bearings 7 of type AX 4. 10. 12 ensuring assembly without play.
  • the horizontal stroke of the tool carriage 1 is 75 millimeters, depending on the model.
  • the horizontal movement control mechanism is designed for hand advance and automatic and micrometric advance to achieve high precision.
  • the tool carriage 1 can also move in a vertical plane.
  • the vertical stroke 67 millimeters long, takes place along a second slide 8 perpendicular to the first by driving with a threaded rod 9, similar to the first, controlled by a pulley 10 and an electric motor 6, possibly separate from the first.
  • the horizontal and vertical strokes of the tool carriage 1 are fixed by microswitches.
  • the slides 3 and 8 each consist of four guide rails 11.
  • Two very high precision incremental closed linear measuring devices of the HEIDE-HAIN type designated as a whole by the reference numbers 12, 13 each include an incremental glass ruler 14, a sensing head or probe reticle not shown, a lamp not shown emitting a series of narrow light beams made up of photo-elements intended to capture said beams, and connected to a probe trolley.
  • the dressing head 2 consisting of a body or sheath 15 in which pivots a barrel 16 provided with a series of diamond tools 17 separate and retractable, for cutting, is mounted on the tool carriage 1 so that the pivot axis PP 'of said barrel 15 is substantially vertical.
  • the above-mentioned cutting tools 17 are each slidably mounted in a cell 18 of said barrel 16.
  • the barrel 16 carries an upper shaft 19 mounted on the sheath 15 using the upper bearing 20 and driven by the pulleys 19 '.
  • the barrel also rests on the sheath 15 by means of the lower pivot 21 and the bearing 22.
  • the barrel 16 comprises a series 23 of cells 18, for example six in number, of trapezoidal section and the walls of which have a groove 24 along which a slide 25 can be moved, actuated by a rod 26 and a jack 27.
  • Each slide 25 carries a cutting tool 17.
  • Each cutting tool 17 has a possibly distinct shape suitable for the profile to be produced.
  • the cells 18 are delimited at their upper part by stop rings 28, 29.
  • the sheath 15 is closed at its upper part and at its lower part by two covers 30 , fixed by screws 30 '.
  • a guide 31, integral with the sheath 15 and mounted at the height of a recess 32 of this sheath 15, opposite the profiling station and a locking device 33 make it possible to rigidly fix each of the tools on the dressing head with sufficient rigidity .
  • each of the tools 17 is obtained by repeated pivoting of the barrel 16 by an angle equal to that between two neighboring tools, in both directions.
  • the barrel 16 can be rigidly locked in each of the positions so as to successively bring each of the tools 17 in front of the profiling or dressing station of the wheel not shown.
  • the supply and the lifting of each of the tools 17 after their positioning opposite the dressing station by pivoting the barrel 16, is done pneumatically or hydraulically using a rod 26 driving the slide 25 enclosing the tool 17.
  • This rod 26 brings each of the corresponding tools against a stop 34 judiciously studied guide 31 to ensure the locking of the tool 17 in the vicinity of the grinding wheel.
  • This device makes it possible to reduce any overhang of each of the cutting tools with respect to the working surface of the grinding wheel to be profiled.
  • the device described eliminates during the lifting of the tool 17 any risk of friction and shock of the tool 16 against any part of the profile of the grinding wheel not shown.
  • the dressing head can be provided with a taring or positioning device made up of three micro-contact measurement units or strain gauges located in reference planes.
  • FIGS. 6 and 7 A second embodiment of a locking and setting device is shown in FIGS. 6 and 7. It comprises a box 35 intended to allow the tool magazine according to the invention to be fixed and positioned, provided with a device locking and setting, generally designated by the reference notation 36, on any profiling machine using studs 35 '.
  • the housing 35 comprises a centering ring 37 and a centering pin 37 'allowing the positioning of the housing.
  • a piston rod 38 sliding transversely with respect to the axis of the guide 31 is held tightly in the cavity 39 by the piston seals 40 applied against the spacer ring 41 using the clamping ring 42 held in place by the screw 43.
  • the cavity 39 is closed by the cover 44 and the O-ring 45.
  • a ring 46 makes it possible to position the feelers 47 mounted on levers 48 which control the microswitch measurement units 49.
  • the guide 31 consists of a tubular casing 50 provided at its end with a calibrated tip 51 intended to hold in place a clamping part 52 of the diamond tool intended to make up for any possible play.
  • the clamping part 52 slides along a guide ring 53 and the tubular casing under the action of a control fluid supplied by inlet 54 and discharge 55 channels, the sealing of the hydraulic or pneumatic control being obtained by the O-rings 56, 57 and 58.
  • the guide ring 53 also serves as an upper stop for the pinching rod 52.
  • the calibrated nozzle 51 comprises two sealing rings 59, 60 as well as an annular recess 61 intended to distribute a powerful air blast intended for the scanning of possible impurities in the gantries of the calibrated nozzle 51.
  • the tubular casing 50 has channels 6 2 intended for a cooling fluid.
  • the apparatus described in this specification can be used to prepare an abrasive wheel. After the profiling operation, it is necessary to sharpen the working surface of the grinding wheel, i.e. to remove the binder superficially between the abrasive grains.
  • One of the tools can then consist of a wheel or a appropriately shaped mild steel bar.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP83870127A 1982-12-14 1983-12-05 Einrichtung zum Profilieren einer Schleifscheibe Withdrawn EP0112320A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE0/209730A BE895347A (fr) 1982-12-14 1982-12-14 Appareil a profiler une meule abrasive
BE209730 1982-12-14

Publications (2)

Publication Number Publication Date
EP0112320A2 true EP0112320A2 (de) 1984-06-27
EP0112320A3 EP0112320A3 (de) 1985-11-27

Family

ID=3843583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83870127A Withdrawn EP0112320A3 (de) 1982-12-14 1983-12-05 Einrichtung zum Profilieren einer Schleifscheibe

Country Status (6)

Country Link
US (1) US4561415A (de)
EP (1) EP0112320A3 (de)
JP (1) JPS59118372A (de)
BE (1) BE895347A (de)
CA (1) CA1219449A (de)
ES (1) ES527928A0 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5003730A (en) * 1987-08-19 1991-04-02 Bryant Grinder Corporation Radius dressing apparatus
JPH0683941B2 (ja) * 1988-04-15 1994-10-26 株式会社森精機製作所 工作機械の自動工具交換装置
US5105528A (en) * 1991-01-22 1992-04-21 Universal Instruments Corporation Method and apparatus for supplying and changing tips of a pick and place vacuum spindle
US5138799A (en) * 1991-04-12 1992-08-18 Bryant Grinder Corporation Probe positioning mechanism for a radius dresser
US6949057B2 (en) * 2003-09-02 2005-09-27 The Boeing Company Multi-function end effector
JP4469325B2 (ja) * 2005-11-04 2010-05-26 株式会社森精機製作所 熱変位補正装置
KR101136382B1 (ko) * 2009-12-08 2012-04-18 한국기계연구원 형상기억합금을 이용한 공구 홀더 및 공구 고정방법

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1461755A (en) * 1923-07-17 Automatic drill press
CH259526A (fr) * 1948-01-05 1949-01-31 Suter Arthur Robert Machine-outil, à barillet porte-outils.
US2587172A (en) * 1949-03-16 1952-02-26 J K Smit & Sons Inc Holder for diamond dressing tools
GB916294A (en) * 1960-07-27 1963-01-23 Jones & Shipman A A Ltd Improvements relating to grinding wheels
DE1302431C2 (de) * 1962-06-23 1975-05-07 G. Bluthardt, Werkzeugmaschinenfabrik, 7440 Nürtingen Bohr- und fraeseinheit mit werkzeugspeicher
US3413702A (en) * 1965-03-01 1968-12-03 Houdaille Industries Inc Turret machine having tool store
DE1477779C3 (de) * 1965-03-05 1974-10-17 Stama Stark Maschinenfabrik Gotthilf Stark, 7311 Schlierbach Revolverbohrmaschine
DD96430A1 (de) * 1972-04-07 1973-03-20
US3999769A (en) * 1975-02-24 1976-12-28 Bayer Jack L Tool holder for machine tools
US4274231A (en) * 1978-12-20 1981-06-23 Boyar-Schultz Corporation Method and apparatus for dressing a grinding wheel

Also Published As

Publication number Publication date
JPS59118372A (ja) 1984-07-09
ES8500114A1 (es) 1984-11-01
EP0112320A3 (de) 1985-11-27
CA1219449A (fr) 1987-03-24
ES527928A0 (es) 1984-11-01
US4561415A (en) 1985-12-31
BE895347A (fr) 1983-06-14

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): AT CH DE FR GB IT LI LU NL SE

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Effective date: 19860515

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Effective date: 19861028

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Effective date: 19871229

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Inventor name: WILLOT, HENRI