EP0307805A2 - Rectifieuse - Google Patents

Rectifieuse Download PDF

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Publication number
EP0307805A2
EP0307805A2 EP88114723A EP88114723A EP0307805A2 EP 0307805 A2 EP0307805 A2 EP 0307805A2 EP 88114723 A EP88114723 A EP 88114723A EP 88114723 A EP88114723 A EP 88114723A EP 0307805 A2 EP0307805 A2 EP 0307805A2
Authority
EP
European Patent Office
Prior art keywords
grinding
swivel plate
sensor element
grinding machine
vertical axis
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
EP88114723A
Other languages
German (de)
English (en)
Other versions
EP0307805A3 (en
EP0307805B1 (fr
Inventor
Herbert Setzer
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.)
Fortuna Werke Maschinenfabrik GmbH
Original Assignee
Fortuna Werke Maschinenfabrik GmbH
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 Fortuna Werke Maschinenfabrik GmbH filed Critical Fortuna Werke Maschinenfabrik GmbH
Publication of EP0307805A2 publication Critical patent/EP0307805A2/fr
Publication of EP0307805A3 publication Critical patent/EP0307805A3/de
Application granted granted Critical
Publication of EP0307805B1 publication Critical patent/EP0307805B1/fr
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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/01—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor for combined grinding of surfaces of revolution and of adjacent plane surfaces on work
    • 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
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto

Definitions

  • the invention relates to a grinding machine with a grinding spindle which can be moved in a horizontal plane relative to a workpiece, the grinding spindle driving a grinding wheel which is rotatable about a horizontal axis and on a grinding wheel Swivel plate is arranged, which is rotatable relative to a base plate about a vertical axis, wherein a measuring device for detecting the relative rotational position of the swivel plate and base plate is provided, which has a first sensor element rigidly connected to the base plate and a second sensor element rotatable with the swivel plate.
  • a grinding machine of the type mentioned above is known.
  • the known grinding machine is used for external cylindrical grinding of rotationally symmetrical workpieces. If an outer contour is to be ground on such workpieces, e.g. If a first, cylindrical section merges into a second, cylindrical section of a different diameter via a conical transition section, the known grinding machine can be moved over all three surface areas by swiveling the grinding spindle in one operation without first having to reclamp or resharpen.
  • the known grinding machine is designed in a very complex manner in its pivoting mechanism, in the actuating unit required for this, and with respect to the measuring device which allows the relative rotational position of the pivoting plate and base plate to be measured.
  • the measuring device is arranged in the area of the swivel plate itself and is therefore difficult to access, so that not only a complicated structure but also lengthy work are required to maintain or possibly replace the swiveling device and the measuring device in the known grinding machine can.
  • the invention is therefore based on the object of developing a grinding machine of the type mentioned in such a way that a simple and robust structure is created for the measuring device and that the measuring device allows the rotational position of the grinding spindle to be detected with the precision of rotation angle sensors that is possible today.
  • This object is achieved in that the sensor elements are arranged outside the swivel plate and that the second sensor element is connected to the swivel plate via a gear.
  • the object on which the invention is based is completely achieved in this way because the measuring device which is now arranged far outside of the swivel plate is almost freely accessible with the two sensor elements, so that it can not only be electrically wired in a simple manner but also for occasional maintenance and Repair work is easily accessible.
  • the gear mechanism between the swivel plate and the second sensor element can be designed to be mechanically highly precise, so that the second sensor element, be it angularly synchronous or via a translation, follows the rotary movement of the swivel plate without noticeable measurement errors.
  • gear unit causes the swivel plate and the second sensor element to rotate at an angle.
  • This measure has the advantage that conversions or linearization of non-linear characteristics is not necessary, but that the output signal of the measuring device is a direct measure of the angular position of the grinding spindle.
  • the transmission is an articulated parallelogram.
  • the articulated parallelogram has the advantage that the rotary bearings arranged at the corner points of the parallelogram pivot by the same angle when the parallelogram is pivoted, so that angularly synchronous rotation of the second sensor element is possible in this case by exclusively utilizing rotary movements.
  • a first corner point of the joint parallelogram lies on the vertical axis and a second point adjacent to the first corner point lies at the location of the second sensor element.
  • This measure has the advantage that the location of the vertical axis, i.e. the pivot point of the grinding spindle is "mirrored" at the point of the second sensor element, so that the second sensor element follows the rotational movement of the grinding spindle in the form of the rotational movement about the vertical axis directly and in synchronism with the angle.
  • a practical embodiment of this variant is characterized in that a first articulation point for a first articulated rod is provided at a point on the pivot plate spaced from the vertical axis, the free end of which is pivotally connected to a second articulated rod at one articulation point, the other end of which is in turn a second articulation point carries the second sensor element, which is the length of the first articulation rod equal to the length of the connecting line between the second articulation point and the vertical axis and the length of the second articulation rod equal to the length of the connecting line between the first articulation point and the vertical axis.
  • This measure has the advantage that the desired joint parallelogram with reflection of the rotary movement of the grinding spindle into a point outside the swivel plate is possible by using only two joint rods with three joint points. In this way, a particularly compact, robust arrangement, which can also be used under the harsh operating conditions of machine tools, is produced, in which the measuring device can be arranged easily accessible outside the range of movement of the swivel plate.
  • a variant of this exemplary embodiment is preferred, in which a rotary bearing acting in the first articulation point is axially clamped, while a pivot bearing acting in the articulation point is axially displaceable.
  • This measure has the advantage that a lifting and lowering movement of the swivel plate in the direction of the vertical axis is possible without this interfering with the function of the measuring device.
  • Such a lifting and lowering movement of the swivel plate can advantageously be used to lift it off the base plate on an air cushion when swiveling the swivel plate, so that only low torques are required when swiveling the swivel plate with the units arranged thereon.
  • 10 designates an external cylindrical grinding machine as a whole.
  • a rotationally symmetrical workpiece 13 is clamped between a workpiece spindle 11 and a tailstock 12 and extends along a first axis 14, which is usually referred to as the z-axis.
  • the workpiece is rotated about the z-axis in defined angular steps and one then speaks of a so-called c-axis.
  • the grinding machine 10 is only shown and explained as an external cylindrical grinding machine for reasons of clarity, but the invention is in no way limited to this application, because the following explanation also applies to internal cylindrical grinding machines or to grinding machines for non-rotationally symmetrical ones Can obtain workpieces.
  • a grinding carriage 20 is slidably arranged in a second axis 21, which is usually referred to as the x-axis.
  • the second Axis 21 is set to the first axis 14 by an angle ⁇ 1, which can be 55 °, for example.
  • the grinding carriage 20 carries a grinding spindle 22, which drives a grinding wheel 23, the grinding wheel 23 being rotatable about a grinding wheel axis 24, which is usually perpendicular to the second axis 21.
  • the grinding spindle 22 can be rotated with the grinding carriage 20 overall about a third axis 25, which runs perpendicular to the plane of the drawing in FIG. 1 as the vertical axis.
  • This rotation of the grinding spindle 22 about the vertical axis 25 can be used, for example, to grind the workpiece round enlarged on the outside in FIG. 1a, the outer contour of which has a first, thicker cylindrical section 26, a subsequent conical section 27 and then a second cylindrical section 28 has a smaller diameter.
  • the grinding wheel 23 is first pivoted into a position in which its front grinding surface runs parallel to the lateral surface of the cylindrical section 26.
  • the grinding spindle 22 is rotated about the vertical axis 25 until the front grinding surface of the grinding wheel 23 now runs parallel to the conical outer surface of the conical section 27, without the workpiece having to be reclamped or the grinding wheel 23 resharpened .
  • the second cylindrical one Section 28 can then be ground after resetting the angular position of the grinding wheel 23.
  • a linear drive 30 is used to pivot the grinding carriage 20 arranged on a swivel plate 50 with the grinding spindle 22.
  • the linear drive 30 can be pivoted with its housing in a first swivel bearing 31 on the base plate 16 about a vertical axis parallel to the vertical axis 25.
  • a second pivot bearing 32 on the pivot plate 50 which also has a vertical pivot axis, an actuating rod 34 is articulated, which can be moved linearly in the housing of the linear drive 30. In this way, a crank drive is created for pivoting the sliding carriage 20 about the vertical axis 25.
  • an articulated triangle 40 is provided.
  • the articulated triangle 40 has a first rod 41, which is hinged at one end to a first articulation point 42 on the swivel plate 50.
  • a second rod 43 of the articulated triangle 40 is pivotally attached to the base plate 19 at a second articulation point 44.
  • the free ends of the rods 41, 43 are connected at a pivot point 45.
  • the articulated triangle 40 defined by the corner points 42, 44 and 45, is pivoted when the linear drive 30 is actuated to pivot the grinding carriage 20.
  • Fig. 1 shows a first extreme rotational position of the grinding carriage 20, in which it is pivoted relative to the z-axis 14 by an angle ⁇ 1 in the order of 55 °.
  • the actuating rod 34 of the linear drive 30 is in this extreme position completely retracted and the joint triangle 40 assumes the first extreme position shown in FIG. 1.
  • the second articulation point 44 has pivoted during this pivoting movement by pivoting the second rod 43 by a certain angular amount, which corresponds exactly to the angular amount of the pivoting of the grinding carriage 20 about the vertical axis 25, because points 25, 42, 44 and 45 lie on the corner points of a parallelogram.
  • a rotation angle sensor is therefore attached, which is actuated by the second rod 43 relative to the base plate 19 and reproduces the rotational position of the grinding spindle 22 in an angle-synchronous manner.
  • the grinding spindle 22 with the swivel plate 50 between the two swivel positions measures an angle ⁇ in which the x-axis migrates from 21 to 21 '.
  • the first articulation point 42 moves in the direction of an arrow 62 into a position 42 'and the articulation point 45 in the direction of an arrow 63 into a position 45'.
  • the points in the third, vertical axis 25 and in the second articulation point 44 do not change because they are fixed in space.
  • the second rod 43 is pivoted by the same angle ⁇ as the imaginary connecting line 60 to 60 'and this pivot angle ⁇ corresponds exactly to the pivot angle ⁇ of the x-axis from 21 to 21'.
  • a measuring device for detecting the rotational movement of the grinding spindle 22 can therefore be arranged in the second articulation point 44, a sensor element of the measuring device being rigidly connected to the base plate 19, while a second sensor element is rotated by the second rod 43 in an angle-synchronized manner to the grinding spindle 22.
  • FIG. 4 A practical embodiment of the articulated triangle 40 is shown in FIG. 4.
  • a pin 70 is fastened to the swivel plate 50 in a rotationally rigid manner by means of a screw connection 71.
  • the pin 70 runs in a pivot bearing 72 which is axially braced relative to a sleeve 73.
  • the rod 41 rigidly attached to the sleeve 73 can therefore rotate in the pivot bearing 72 about an axis 74, but cannot move axially along the latter.
  • the first rod 41 is rigidly connected at the articulation point 45 to a sleeve 80, which can be rotated about an axis 84 relative to a pin 82 via an axially non-tensioned rotary bearing 81 and can also be displaced along this axis 84.
  • the pin 82 is rigidly seated in a further sleeve 83, which in turn is rigidly connected to the second rod 43.
  • the arrangement described above makes it possible for the swivel plate 50 to carry out a lifting and lowering movement in the direction of an arrow 85, although the height of the second rod 43 cannot be adjusted.
  • the swivel plate 50 moves together with the entire articulation point 42 and the first rod 41 together with the sleeve 80, which runs axially via the pivot bearing 81 which is not braced axially on the pin 82.
  • This arrangement thus represents a compensation option for the lifting and lowering movement of the swivel plate 50, which is required to swivel the swivel plate 50 between two angular positions ⁇ .
  • the second rod 43 is rigidly connected to a sleeve 90, in which a pin 91 sits in a rotationally rigid manner.
  • the pin 91 is held axially clamped in a lower pivot bearing 92, but can rotate about an axis 100.
  • a holding part 93 which is rigidly connected to the base plate 19, receives the lower pivot bearing 92 and an upper pivot bearing 94, in which the pin 91 runs with its upper end.
  • An end 95 of the pin 91 projecting beyond the upper pivot bearing 94 is provided with markings 96. Near the end 95 there is a sensor element 97 which interacts with the markings 96. Measuring signals can be removed from the sensor element 97 via a connection 98.
  • the arrangement of the sensor element 97 and the end 95 with markings 96 is encapsulated by means of a housing 99.
  • the sensor element 97 and the markings 96 are only representative of a large number of possible sensor technologies, such as are used for detecting the angle of rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Machine Tool Units (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP88114723A 1987-09-16 1988-09-09 Rectifieuse Expired - Lifetime EP0307805B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873731006 DE3731006A1 (de) 1987-09-16 1987-09-16 Schleifmaschine
DE3731006 1987-09-16

Publications (3)

Publication Number Publication Date
EP0307805A2 true EP0307805A2 (fr) 1989-03-22
EP0307805A3 EP0307805A3 (en) 1990-02-28
EP0307805B1 EP0307805B1 (fr) 1992-03-04

Family

ID=6336076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114723A Expired - Lifetime EP0307805B1 (fr) 1987-09-16 1988-09-09 Rectifieuse

Country Status (4)

Country Link
US (1) US4934106A (fr)
EP (1) EP0307805B1 (fr)
JP (1) JPH0197565A (fr)
DE (2) DE3731006A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138799A (en) * 1991-04-12 1992-08-18 Bryant Grinder Corporation Probe positioning mechanism for a radius dresser
US5562526A (en) * 1993-03-29 1996-10-08 Toyoda Koki Kabushiki Kaisha Method and apparatus for grinding a workpiece
US8474140B2 (en) * 2008-04-29 2013-07-02 Caterpillar Inc. High precision grinding and remanufacturing of machine components
DE102016012915B4 (de) * 2016-10-21 2018-07-26 KAPP Werkzeugmaschinen GmbH Schleifarm zum Schleifen innenprofilierter Werkstücke mit einer Schleifscheibe
CN106514475B (zh) * 2016-11-24 2018-09-21 无锡市伟丰印刷机械厂 一种烧结钕铁硼生产用铁棒高效抛光除锈设备
CN113414647A (zh) * 2021-07-19 2021-09-21 福建省立新船舶工程有限公司 一种基于卧式机床的砂光设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1652021A1 (de) * 1966-12-02 1971-09-16 Cincinnati Milling Machines Lt Schleifmaschine
DE2011090A1 (de) * 1970-03-09 1971-09-23 Schaudt Maschinenbau Gmbh, 7000 Stuttgart Verfahren und Vorrichtung zum Schleifen von zylindrischen und konischen Sitzen
DE2122539A1 (de) * 1971-05-06 1972-11-16 Schaudt Maschinenbau Gmbh, 7000 Stuttgart Vorrichtung zum Schleifen von zylindrischen und konischen Sitzen
SU956257A2 (ru) * 1980-11-10 1982-09-07 Харьковское Опытно-Конструкторское Бюро Шлифовальных Станков Способ управлени процессом шлифовани
EP0131366A2 (fr) * 1983-07-11 1985-01-16 Ex-Cell-O Corporation Rectifieuse avec poupée pivotante CNC

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US807323A (en) * 1904-12-28 1905-12-12 Samuel J Shimer And Sons Inc Grinding-machine.
JPS5945081B2 (ja) * 1977-08-08 1984-11-02 豊田工機株式会社 回転テ−ブルの回転割出し装置
DK14583A (da) * 1982-01-20 1983-07-21 Saint Gobain Vitrage Fremgangsmaade og apparat til positionsstyring af vaerktoejet paa en kantbearbejdningsmaskine til glasplader
US4631869A (en) * 1983-08-09 1986-12-30 Honda Giken Kogyo Kabushiki Kaisha Automatic workpiece engaging apparatus in grinding machines
SU1238954A1 (ru) * 1984-06-06 1986-06-23 Всесоюзный Проектно-Технологический Институт Энергетического Машиностроения Станок дл резки заготовок
JPS6165762A (ja) * 1984-09-06 1986-04-04 Nippon Sheet Glass Co Ltd 板状体の端面研磨装置
DE3523012A1 (de) * 1985-06-27 1987-01-02 Schaudt Maschinenbau Gmbh Schwenkbarer schleifspindelstock
JPS6294260A (ja) * 1985-10-17 1987-04-30 Toyoda Mach Works Ltd 数値制御研削盤

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1652021A1 (de) * 1966-12-02 1971-09-16 Cincinnati Milling Machines Lt Schleifmaschine
DE2011090A1 (de) * 1970-03-09 1971-09-23 Schaudt Maschinenbau Gmbh, 7000 Stuttgart Verfahren und Vorrichtung zum Schleifen von zylindrischen und konischen Sitzen
DE2122539A1 (de) * 1971-05-06 1972-11-16 Schaudt Maschinenbau Gmbh, 7000 Stuttgart Vorrichtung zum Schleifen von zylindrischen und konischen Sitzen
SU956257A2 (ru) * 1980-11-10 1982-09-07 Харьковское Опытно-Конструкторское Бюро Шлифовальных Станков Способ управлени процессом шлифовани
EP0131366A2 (fr) * 1983-07-11 1985-01-16 Ex-Cell-O Corporation Rectifieuse avec poupée pivotante CNC

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED *
SOVIET INVENTIONS ILLUSTRATED Sektion Mechanik, Woche K28, Zusammenfassung Nr. 710445, P61, 24.August 1983, Derwent Publications Ltd, London, GB; & SU - A - 956257 (KHARK GRIND MACH). *

Also Published As

Publication number Publication date
US4934106A (en) 1990-06-19
JPH0197565A (ja) 1989-04-17
EP0307805A3 (en) 1990-02-28
EP0307805B1 (fr) 1992-03-04
DE3868805D1 (de) 1992-04-09
DE3731006A1 (de) 1989-03-30

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