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EP0072887A1 - Machine pour l'affûtage des outils contrôlée par un programme - Google Patents

Machine pour l'affûtage des outils contrôlée par un programme Download PDF

Info

Publication number
EP0072887A1
EP0072887A1 EP82100857A EP82100857A EP0072887A1 EP 0072887 A1 EP0072887 A1 EP 0072887A1 EP 82100857 A EP82100857 A EP 82100857A EP 82100857 A EP82100857 A EP 82100857A EP 0072887 A1 EP0072887 A1 EP 0072887A1
Authority
EP
European Patent Office
Prior art keywords
grinding
tool
spindle
axis
horizontal
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
EP82100857A
Other languages
German (de)
English (en)
Other versions
EP0072887B1 (fr
Inventor
Willi Motzer
Horst Dr.-Ing. Bräuning
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.)
Walter Montanwerke GmbH
Original Assignee
Walter Montanwerke 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 Walter Montanwerke GmbH filed Critical Walter Montanwerke GmbH
Priority to AT82100857T priority Critical patent/ATE11500T1/de
Publication of EP0072887A1 publication Critical patent/EP0072887A1/fr
Application granted granted Critical
Publication of EP0072887B1 publication Critical patent/EP0072887B1/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
    • 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
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/02—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters
    • B24B3/06—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters of face or end milling cutters or cutter heads, e.g. of shank type
    • B24B3/065—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters of face or end milling cutters or cutter heads, e.g. of shank type end milling cutters with rounded ends

Definitions

  • the machine relates to a program-controlled tool grinding machine for grinding concentric tools, for example milling cutters and drills, with an adjustable on a machine frame along a first vertical axis (Y) and rotatable about this grinding head, which drives a driven with its axis pivotably in a vertical swivel plane and has a first grinding spindle carrying a grinding wheel at the end, and with a tool holder arranged on the machine frame at a distance from the grinding head on a rotary table, which has a cross slide that can be pivoted about the second vertical axis (C) defined by the rotary table and is adjustable in a horizontal plane, on which a tool-holding spindle coupled to a program-controlled drive device is rotatably mounted, the rotary table along a first horizontal axis (X) running transversely to the grinding head and the grinding head along one perpendicular to the first n horizontal horizontal axis (X) extending second horizontal axis (Z) are adjustable and at least the grinding head is program
  • the cutting of the front teeth By appropriate rotation of the in the recording spindle-clamped tool during the grinding process, the cutting of the front teeth, starting from the tool axis, can be ground towards the circumference of the tool.
  • this machine does not allow, for example, the manufacture or machining of the spiral grooves present on the circumference of the tool body.
  • the flutes could not be ground into the blank from the solid, nor the clearance angle on the cylindrical cutting edges and then ground in the radius area. Therefore, in order to finish machining such a tool, several different grinding machines have to be used in succession, for which the tool has to be re-clamped and aligned each time.
  • the grinding head can also be pivoted about a vertical axis in order to achieve a greater variety of possible uses , but this is paid for with a mechanically very complicated construction of the machine. Since all grinding operations are carried out with a single grinding wheel provided on the grinding head , this results in relatively complicated adjusting movements for the grinding spindle - this grinding wheel, although it is not easily possible to grind spiral-fluted end mills at all points in one setting.
  • the grinding wheel must have a complicated shape because with this one grinding wheel the ver different surfaces on which milling cutters have to be ground.
  • This shaped grinding wheel is not economical both in terms of setting up relative to the milling cutter and in terms of the wear behavior of the grinding wheel. Commercial standard grinding wheels cannot therefore be used.
  • a numerically controlled tool grinding machine has become known in practice, the grinding head of which carries two grinding disks located opposite one another at a fixed distance and at a fixed angle, which allow the grinding work to be divided.
  • This machine which is also intended for grinding end mills in particular, does not allow all grinding work to be carried out on more complicated tools that are circumferential and end-end-cutting, unless it is designed with 8 axes of movement, which in turn means a very high outlay .
  • the object of the invention is therefore to provide a program-controlled tool grinding machine which allows all grinding operations, including the spiral grooves on the circumference and forehead, to be carried out automatically under program control with a tool clamping, with comparatively little technical effort, even with more complicated tools, for example with a radius milling cutter.
  • the tool grinding machine mentioned at the outset is characterized according to the invention in that the grinding head has at least three separate grinding wheels which are seated on at least two separately driven spindles and are program-controlled in succession in the correct one spatial alignment can be brought into engagement with the tool, and that at least one of the spindles is arranged with its axis lying substantially in a horizontal plane.
  • the grinding head has at least three grinding wheels, all grinding work occurring with rotating tools can be carried out automatically by adjusting the grinding spindles of the grinding head and the tool holder without the machine having to have an excessive number of axes of motion that control, programming and also the increase the mechanical construction of the machine significantly.
  • the new tool grinding machine only requires 6 axes of movement, 3 of which are each assigned to a rotary movement and 3 to a translatory movement.
  • Each of the grinding wheels can be assigned its own grinding spindle, but the arrangement can also be such that, for example, two grinding wheels are arranged at each end on the horizontal grinding spindle. Similarly, two grinding wheels can also be provided at each end on the first grinding spindle, which is pivotable in the vertical plane. Since the first grinding spindle with its axis, starting from a vertical position, can be fluctuated and at least one further grinding spindle with its axis is arranged essentially horizontally, so that these two grinding spindles intersect at right angles in space in the starting position, relatively small adjustment paths result from the mentioned starting positions in order to transfer the grinding wheels into the correct spatial position for the respective grinding process.
  • the vertical plane containing the first grinding spindle axis and the other horizontal grinding spindle lie on different sides of the first vertical axis about which the grinding head can be rotated. This makes it possible to achieve relatively small adjusting movements of both the tool carrier and the grinding head during the transition between the individual machining operations of the tool. As a result, the unproductive idle times are also very short, which also increases the machine's economy.
  • the horizontal grinding spindle is pivotally mounted about a transverse horizontal axis, so that, for example, to grind the clearance angle on the cylindrical cutting edges of a radius cutter, the cup grinding wheel seated on this grinding spindle by a certain small angle in the order of 10 ° can be tilted.
  • the arrangement can also be such that the first grinding spindle with its pivot plane is mounted such that it can be tilted about a horizontal axis running at a distance from it, which increases the variety of setting options.
  • the first grinding spindle and / or the horizontal grinding spindle are expediently connected to their drive motor to form a jointly adjustable unit, while the grinding head itself is designed to be pivotable by at least 180 ° about the first vertical axis.
  • the program-controlled tool grinding machine shown in FIGS. 1 to 4 has a machine frame 1 on which a first slide 2 is displaceably mounted along a first horizontal axis X.
  • the first slide 2 carries a rotary table 3 with a vertical axis of rotation C, on which a cross slide consisting of a longitudinal and transverse support 4 or 5 is fastened at the end.
  • the cross support 5 in turn carries a spindle housing 6 which is aligned parallel to the longitudinal support 4 and in which a tool holder spindle 7 is rotatably mounted.
  • the spindle housing 6 is held between two jaws 8 and fixed by means of set screws 9. After loosening the set screws 9, it can be pivoted about a horizontal axis 10, so that the axis of the tool holding spindle 7 receives a corresponding inclination with respect to the horizontal.
  • a reduction gear 11 is flanged to the spindle housing 6, onto which a stepping motor 12 is placed, which can drive the tool holding spindle 7 about its axis of rotation A via the reduction gear 11, as indicated by an arrow 13 (FIG. 1).
  • the R is assigned undtisch 3 via a reduction gear 14 (Fig. 2), a second stepping motor 15 which allows to programmatically the rotary table 3 and hence the seated thereon cross slide about the vertical axis C to rotate, as indicated by in Fig. 1 an arrow 16 is indicated.
  • the carriage 2 carrying the rotary table 3 is also coupled via a corresponding reduction gear (not shown further) to a program-controlled stepping motor 16 (FIG. 2), which allows to move the rotary table 3 and the tool carrier arranged thereon, described above and consisting of the cross slide, the spindle housing 6 of the tool holder 7 and the stepping motor 12 with the associated reduction gear 11, along the first horizontal axis X in accordance with the program.
  • a program-controlled stepping motor 16 FIG. 2
  • the longitudinal support 4 of the cross slide can be adjusted by hand by actuating a handwheel 17 (FIG. 2), while the adjustment of the transverse support 5 by a corresponding handwheel 18 (FIG. 4) can also be done by hand.
  • a handwheel 17 (FIG. 2)
  • a corresponding handwheel 18 (FIG. 4)
  • a second carriage 19 is mounted so as to be longitudinally displaceable along a second horizontal axis Z, which runs at right angles to the first horizontal axis X, along which the rotary table is displaceable.
  • a height-adjustable column 20 on which a grinding head 21 is arranged is mounted on the second carriage 19.
  • the second carriage 19 can also be shifted along the second horizontal axis Z in a program-controlled manner by a stepping motor 23 (FIG. 2) via a reduction gear 22.
  • the actual grinding head 21 is mounted and rotatably mounted on the height-adjustable column 20, the height of which is adjusted along a Y-axis via a (FIG. 3) program-controlled stepping motor 27a which is flanged to a reduction gear 26.
  • the base 25 is via a second reduction gear contained in the housing of the reduction gear 26 by a stepping motor 27 which is also flanged on Vertical axis B (Fig. 1, 2), starting from an initial position illustrated in Fig.1, rotatable in both directions by at least 18 0 °.
  • a mounting plate 29 is fastened on it by means of bearing parts 28, which carries a clamping surface lying in a horizontal plane, on which a first grinding unit 32 is pivotally mounted about a horizontal axis 33 via a rotary plate 31.
  • the first grinding unit 32 has a first grinding spindle which can be pivoted with its axis 34 in a vertical plane about the axis 33, which carries a grinding wheel 35 at the end and is driven by an electric motor 36 which forms part of the grinding unit 32 and is firmly coupled to it.
  • the first grinding spindle 37 can be pivoted about the horizontal axis 33, for example about the spiral angle of a tool to be ground; for example up to plus or minus 50 °.
  • the entire grinding unit 32 can, if necessary, be pivoted together with the mentioned pivoting plane of the axis 34 of the grinding spindle 37 about the other horizontal axis 30. Both swiveling movements can be carried out by hand; Normally, the two pivot axes 33, 30 are assigned stepping motors equipped with corresponding reduction gears, as indicated at 38 and 39 in FIG. 1.
  • a second grinding unit 40 Arranged on the side of the vertical axis B opposite the first grinding unit 32 is a second grinding unit 40 which has a second grinding spindle 41 which lies with its axis 42 essentially in a horizontal plane and is driven by an electric motor 43 0 forming part of the grinding unit 40 .
  • the horizontal grinding spindle 41 carries at its two ends two grinding wheels 43, 44, one of which (44) is designed as a cup grinding wheel.
  • the second grinding unit 40 can be pivoted on the base 25 about a horizontal axis 45 (FIG. 1.3), a pivoting range of plus or minus 10 °, starting from the starting position shown in FIGS. 1.3, generally being sufficient. This pivoting movement can also be carried out under program control by means of a stepping motor indicated at 46 in FIG. 3.
  • the grinding head 21 obviously has three grinding wheels 35, 43, 44, but the arrangement could also be such that a further grinding wheel - at the top in FIG. 1 - is placed on the end of the vertical spindle 37. It would also be conceivable to assign each of the two grinding wheels 41, 44 a separate grinding spindle, which also has its own drive. It is essential that in each case the grinding head 21 has at least three separate grinding wheels and the entire machine tool has six program-controlled movement axes, namely the axes X, Y, Z (FIG. 1) assigned to three translatory movements, the Y axis being the stroke movement the column 20 and thus the grinding head 21 is assigned, and the three axes of rotation A, B, C.
  • the movements along or about the axes X, Y, Z and A, B, C are controlled by a program controller 42 (FIG. 2) which, if necessary, can also control the other movements described via the stepping motors 28, 38, 46 .
  • FIGS. 5 to 8 The operation of the tool grinding machine is exemplified in FIGS. 5 to 8 in connection with the grinding of an end mill with radius:
  • a cylindrical blank 50 is inserted into the tool holding spindle 7 in FIG. 5; the rotary table 3 and the grinding head 21 are pivoted in the manner shown in FIG. 5 by the spiral angle of the tool to be produced from the blank 50 about the axes C and X; The flutes are ground from the solid into the blank 50 by means of the peripheral grinding wheel 43.
  • the blank 50 is accordingly rotated about the axis A, while the rotary table 3 is moved along the X axis, in such a way that the spiral flute is ground in over the necessary length of the blank 30.
  • the grinding head 21 and the rotary table 3 carrying the tool carrier are automatically transferred to the position according to FIG. 6, in which the disk grinding wheel 35 of the grinding unit 32, which is pivoted about the horizontal axis 33, the rake face in the cylindrical cutting part and in Grinding radius area of the tool 50.
  • the rotary table 3 is correspondingly rotated about the axis C, said first cylindrical portion is ground at the rake surface and the pivoting about the C-axis is carried out only at the end of the machining of the cylindrical portion.
  • the horizontal grinding spindle can be inclined about the horizontal axis 45 (FIG. 1) by a value of approximately 10 ° with respect to the horizontal.
  • the machining processes described all take place with a single clamping of the blank or. Tool 50. This not only results in a significant saving in working time, but also a high degree of accuracy, since each reclamping of the tool can lead to errors.
  • the movement processes described take place, controlled by the program control device 47, automatically in accordance with the program previously entered into the program control device 47.
  • the described method of working is only one example of the possible uses of the tool grinding machine, which is suitable for the production and machining of practically all tools, and here in particular also the carbide-tipped or carbide-tipped tools, to which particularly high accuracy requirements are made.

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)
EP82100857A 1981-08-25 1982-02-06 Machine pour l'affûtage des outils contrôlée par un programme Expired EP0072887B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82100857T ATE11500T1 (de) 1981-08-25 1982-02-06 Programmgesteuerte werkzeugschleifmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3133488 1981-08-25
DE3133488A DE3133488C3 (de) 1981-08-25 1981-08-25 Programmgesteuerte Werkzeugschleifmaschine

Publications (2)

Publication Number Publication Date
EP0072887A1 true EP0072887A1 (fr) 1983-03-02
EP0072887B1 EP0072887B1 (fr) 1985-01-30

Family

ID=6140017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100857A Expired EP0072887B1 (fr) 1981-08-25 1982-02-06 Machine pour l'affûtage des outils contrôlée par un programme

Country Status (5)

Country Link
US (1) US4461121A (fr)
EP (1) EP0072887B1 (fr)
JP (1) JPH0622786B2 (fr)
AT (1) ATE11500T1 (fr)
DE (1) DE3133488C3 (fr)

Cited By (11)

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EP0426146A2 (fr) * 1989-11-03 1991-05-08 Volker Zang Appareil rapporté pour une affûteuse
EP0522272A2 (fr) * 1991-07-12 1993-01-13 Buderus Schleiftechnik GmbH Machine à retifier des filet avec l'unité de retification montée sur les tables de retification pour des opérations de retification profile
DE4242906A1 (de) * 1992-12-18 1994-06-23 Walter Ag Numerisch gesteuerte Schleifmaschine zum Schleifen von metallischen Werkstücken, insbesondere Werkzeugen
EP0683002A1 (fr) * 1994-05-19 1995-11-22 Societe Europeenne De Propulsion Fraise à copier amovible
WO2000066309A1 (fr) * 1999-05-03 2000-11-09 Walter Ag Affuteuse pour lames de scie presentant une tete de meule porteuse d'au moins un disque de meule et d'au moins une tige de meulage
CN102059596A (zh) * 2010-08-09 2011-05-18 贵州恒瑞辰机械制造有限公司 磨刀机
CN105547348A (zh) * 2015-12-08 2016-05-04 北京瑞赛长城航空测控技术有限公司 一种半实物仿真测试转台及其联轴结构
CN106863088A (zh) * 2017-02-13 2017-06-20 戴恩（天津）科技有限公司 一种半自动精密数控磨床
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CN103302563B (zh) * 2012-03-14 2015-11-25 富泰华工业（深圳）有限公司 打磨装置及使用该打磨装置的机械手
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US9592581B2 (en) * 2014-09-12 2017-03-14 Jeff Toycen Tool grinder
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Cited By (18)

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EP0426146A3 (en) * 1989-11-03 1991-10-16 Volker Zang Device to be mounted on a tool grinding machine
EP0426146A2 (fr) * 1989-11-03 1991-05-08 Volker Zang Appareil rapporté pour une affûteuse
EP0522272A2 (fr) * 1991-07-12 1993-01-13 Buderus Schleiftechnik GmbH Machine à retifier des filet avec l'unité de retification montée sur les tables de retification pour des opérations de retification profile
EP0522272A3 (en) * 1991-07-12 1993-07-07 Buderus Schleiftechnik Gmbh Threadgrinding machine with a grinding unit mounted on the grinding table for profile grinding operations
US5738564A (en) * 1992-12-18 1998-04-14 Walter Ag Numerically controlled grinding machine for grinding workpieces, in particular tools
DE4242906A1 (de) * 1992-12-18 1994-06-23 Walter Ag Numerisch gesteuerte Schleifmaschine zum Schleifen von metallischen Werkstücken, insbesondere Werkzeugen
US5833402A (en) * 1994-05-19 1998-11-10 Societe Europeenne De Propulsion Removable copying cutter
FR2720017A1 (fr) * 1994-05-19 1995-11-24 Europ Propulsion Fraise à copier amovible.
EP0683002A1 (fr) * 1994-05-19 1995-11-22 Societe Europeenne De Propulsion Fraise à copier amovible
US5868606A (en) * 1994-05-19 1999-02-09 Societe Europeene De Propulsion Method of manufacturing a copying cutter
WO2000066309A1 (fr) * 1999-05-03 2000-11-09 Walter Ag Affuteuse pour lames de scie presentant une tete de meule porteuse d'au moins un disque de meule et d'au moins une tige de meulage
CN102059596A (zh) * 2010-08-09 2011-05-18 贵州恒瑞辰机械制造有限公司 磨刀机
CN105547348A (zh) * 2015-12-08 2016-05-04 北京瑞赛长城航空测控技术有限公司 一种半实物仿真测试转台及其联轴结构
WO2017211452A1 (fr) * 2016-06-07 2017-12-14 Satisloh Ag Machine d'usinage de pièces de qualité optique
CN106863088A (zh) * 2017-02-13 2017-06-20 戴恩（天津）科技有限公司 一种半自动精密数控磨床
CN106863088B (zh) * 2017-02-13 2019-09-17 戴恩（天津）科技有限公司 一种半自动精密数控磨床
DE102018118031A1 (de) * 2017-10-13 2019-04-18 Thorsten Lasch Bearbeitungsvorrichtung und Verfahren zur Bearbeitung
WO2021043404A1 (fr) 2019-09-05 2021-03-11 Thorsten Lasch Dispositif d'usinage pour usiner des pièces et procédé d'usinage

Also Published As

Publication number Publication date
JPH0622786B2 (ja) 1994-03-30
DE3133488C2 (de) 1994-07-28
JPS5840255A (ja) 1983-03-09
DE3133488C3 (de) 1994-07-28
ATE11500T1 (de) 1985-02-15
US4461121A (en) 1984-07-24
EP0072887B1 (fr) 1985-01-30
DE3133488A1 (de) 1983-03-17

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