EP2161099A2 - Affûteuse - Google Patents

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Publication number
EP2161099A2
EP2161099A2 EP09011250A EP09011250A EP2161099A2 EP 2161099 A2 EP2161099 A2 EP 2161099A2 EP 09011250 A EP09011250 A EP 09011250A EP 09011250 A EP09011250 A EP 09011250A EP 2161099 A2 EP2161099 A2 EP 2161099A2
Authority
EP
European Patent Office
Prior art keywords
axis
spindle
grinding
workpiece
workpiece spindle
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
EP09011250A
Other languages
German (de)
English (en)
Other versions
EP2161099A3 (fr
EP2161099B1 (fr
Inventor
Hubert Ambros Reiser
Peter Erchinger
Hans-Dieter Braun
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.)
Haas Schleifmaschinen GmbH
Original Assignee
Haas Schleifmaschinen 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
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Application filed by Haas Schleifmaschinen GmbH filed Critical Haas Schleifmaschinen GmbH
Publication of EP2161099A2 publication Critical patent/EP2161099A2/fr
Publication of EP2161099A3 publication Critical patent/EP2161099A3/fr
Application granted granted Critical
Publication of EP2161099B1 publication Critical patent/EP2161099B1/fr
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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
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/34—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of turning or planing tools or tool bits, e.g. gear cutters
    • B24B3/343—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of turning or planing tools or tool bits, e.g. gear cutters of throw-away cutting bits
    • 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
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
    • B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs

Definitions

  • the invention relates to a grinding machine for circumferential and contour grinding of workpieces.
  • the plan sides of the cutting insert are first ground in a first step. Subsequently, the periphery is ground to give the insert its shape, and finally the contour, that is, the cutting edge profile of the inserts is ground.
  • the cutting plates are usually clamped between two rams aligned in a clamping axis, which have a controlled rotary drive in order to position the workpiece in the circumferential direction with respect to the grinding tool.
  • a grinding machine for grinding indexable inserts in which the cutting plates between two tappets of a rotatably driven workpiece spindle is clamped.
  • the workpiece spindle is movable in a linear axis parallel to its axis of rotation.
  • a rotationally drivable grinding spindle carries a grinding tool, which is designed as a flat grinding wheel.
  • the grinding spindle is mounted in a wheel spindle, which is movable in a direction perpendicular to the axis of the workpiece spindle linear axis.
  • the axis of the grinding spindle lies in the plane, which is spanned by the linear axes of movement of the workpiece spindle and the grinding headstock.
  • the grinding spindle axis is pivotable in that the grinding headstock is pivotable about a grinding spindle pivot axis perpendicular to this plane.
  • a grinding machine for circumferential and contour grinding of cutting plates is known, in which the cutting plate to be ground between tappets of a rotating workpiece spindle driven is tensioned.
  • the workpiece spindle is pivotable about a workpiece spindle pivot axis perpendicular to its axis.
  • a rotationally drivable grinding spindle which carries a grinding tool embodied as a plane grinding wheel extends in the pivoting plane of the workpiece spindle and is movable in this plane in two mutually perpendicular linear axes.
  • All these known grinding machines have in common that these grinding machines are designed as four-axis grinding machines.
  • the workpiece spindle and the grinding spindle are displaceable against each other in two linear axes.
  • the tensioned in the workpiece spindle cutting plate is rotatable about a rotational axis by means of the workpiece spindle to edit the different peripheral regions of the cutting plate by means of the grinding tool.
  • the axes of the workpiece spindle and the grinding spindle can be pivoted in a plane enclosing the workpiece spindle axis against each other to the angle of attack of the grinding tool relative to the cutting plate to change.
  • the cutting plates or indexable cutting edges ground in a preceding processing step on their plan sides are clamped between the rams of the workpiece spindle and can be ground in this one clamping both in its peripheral shape by the cutting plate is rotated by means of the workpiece spindle, as well as in its contour, ie the profile shape of the cutting edge edge by the axes of the grinding spindle and the tool spindle are pivoted against each other.
  • a grinding machine according to the preamble of claim 1 is known, with which a 6-axis grinding machining is possible.
  • the grinding spindle carrying the grinding tool is moved numerically controlled in two linear axes, wherein the grinding spindle in addition to a grinding spindle axis perpendicular to the grinding spindle pivot axis is pivotable.
  • the workpiece can be clamped on a workpiece spindle, which can be driven in rotation about its workpiece spindle axis.
  • the workpiece spindle axis is pivotable about a workpiece spindle pivot axis intersecting this workpiece spindle axis and mounted on a carriage movable in the third linear axis.
  • the structure of this grinder is expensive. A conversion of the grinding machine for the processing of different workpieces is difficult.
  • the invention has for its object to provide a grinding machine for circumferential and contour grinding of workpieces, in particular of cutting inserts and indexable inserts available, which allows grinding in a single clamping of the workpiece and a flexible conversion for adaptation to different workpieces.
  • the grinding machine according to the invention is designed as a six-axis grinding machine.
  • the rotationally drivable grinding spindle, on which the grinding tool is clamped, and the workpiece spindle, which can be driven in rotation, on which the workpiece, in particular an insert or indexable insert can be tensioned, are movable numerically controlled in three linear axes relative to one another.
  • the workpiece clamping the workpiece exciting is controlled to rotate about its axis to the grinding tool with the various peripheral areas of To be able to engage workpieces.
  • the workpiece spindle is further controlled pivotable about a workpiece spindle pivot axis intersecting its axis, so that the grinding tool can descend the profile contour of the cutting plate.
  • the grinding spindle is also pivotable about a grinding spindle pivot axis as the third rotary axis, this grinding spindle pivot axis running transversely to the grinding spindle axis.
  • this third rotary axis it is possible to pivot the grinding spindle axis at an angle relative to the workpiece spindle, so that the axis of the grinding spindle and thus the axis of the rotating grinding tool intersects the pivot plane of the workpiece spindle.
  • the grinding tool can also be aligned with its axis of rotation in relation to the workpiece so that the grinding tool engages the workpiece parallel to the axis of the workpiece spindle and thus to the axis of the workpiece.
  • concave peripheral lines and concave contour surfaces of the workpiece can be ground without the workpiece has to be re-clamped.
  • the workpiece spindle and a servomotor which can be driven in rotation by said workpiece spindle are accommodated in a clamping device which can be mounted on the workpiece pivot spindle as a modular structural unit.
  • a clamping device which can be mounted on the workpiece pivot spindle as a modular structural unit.
  • a conventional grinding machine with an axis of rotation for the workpiece can be converted by means of the clamping device in a simple manner in a grinding machine with an additional workpiece rotation axis.
  • the modular design of the clamping device allows easy conversion of the grinding machine to adapt to different Workpieces, since all necessary for the clamping of the workpiece elements are arranged in the clamping device.
  • FIG. 1 is shown schematically the basic structure of a grinding machine.
  • the grinding machine has a machine bed 10 with a vertical rear wall 12.
  • a table 14 is arranged, which is in a horizontal Y-axis perpendicular to the front operator side and the rear wall 12 numerically controlled linearly movable.
  • a cross slide is arranged, which is numerically controlled in a direction perpendicular to the Y-axis horizontal linear X-axis and in a direction perpendicular to the X-axis and the Y-axis vertical linear Z-axis.
  • a grinding spindle unit 18 is arranged, which is mounted for rotation about a Z axis parallel to the C-axis rotatably mounted in the carriage 16 and driven by this C-axis numerically controlled is pivotable.
  • a grinding spindle is horizontally mounted, which is driven by a spindle motor 20 and at its free end a grinding tool 22 carries, which is shown in the drawing as a cup-shaped grinding wheel, but may also be designed as a flat grinding wheel.
  • a workpiece pivot spindle unit 24 is arranged, which receives a workpiece pivot spindle 26.
  • the workpiece swing spindle 26 is rotatable by means of a motor 28 numerically controlled about its axis parallel to the X axis A-axis.
  • a clamping device is mounted on the workpiece pivot spindle 26, as in FIG. 4 is shown.
  • the clamping device is a self-contained unit that can be modularly mounted on the A-axis.
  • the tensioning device has a main body 30.
  • coupling means are mounted, with which the base body 30 can be fixedly connected to the workpiece pivot spindle 26.
  • the coupling means consist in the illustrated embodiment of a shaft taper 32 which is inserted into the receiving flange of the workpiece pivot spindle 26 and screwed thereto.
  • the main body 30 is thus controlled via the workpiece pivot spindle 26 pivotable about the A-axis.
  • a workpiece spindle is mounted in the main body 30.
  • a servo motor 34 is firmly received in the main body 30.
  • a counter-ram 38 is mounted, which is coaxially aligned with the motor shaft of the servomotor 34.
  • the counter-ram 38 can be numerically controlled by means of the servomotor 34 about its central axis, which is referred to as workpiece spindle axis, are rotated.
  • the servomotor 34 and the counter-ram 38 are arranged in the base body 30 so that the axis of the counter-ram 38, ie the workpiece spindle axis orthogonally intersects the central axis of the shaft cone 32 and thus the A-axis. Accordingly, the workpiece spindle axis may also be referred to as a B axis, as shown in FIG FIG. 2 is indicated.
  • a guide block 40 is mounted in the base body 30 below the workpiece spindle axis and spaced therefrom.
  • the guide block 40 is guided linearly displaceably in the main body 30 in a direction parallel to the workpiece spindle axis.
  • the base body 30 for example, a recess in which the guide block 40 is arranged and slides on guides 42 which are parallel to the workpiece spindle axis and mounted in the base body 30.
  • the guides 42 are formed in the illustrated embodiment as guide rods.
  • the guide block 40 can move freely on the guides 42 with a stroke of, for example, about 10 millimeters.
  • a guide bush 44 is attached on the guide block 40.
  • the guide bush 44 is aligned axially aligned with the central axis of the counter-ram 38.
  • a clamping ram 46 is guided free of play both axially and rotationally freely movable.
  • the clamping ram 46 is preferably formed conically at its end facing the counter-ram 38 end.
  • a workpiece, in particular an indexable insert 48 can be clamped between the counter-ram 38 and the clamping ram 46 by arranging the indexable insert 48 centered on the workpiece spindle axis and the clamping ram 46 is moved by force against the counter-ram 38.
  • the clamping ram 46 can penetrate into a clamping recess or clamping bore of the indexable insert 48 in order to clamp it centered on the counter-ram 38.
  • the indexable insert 48 can be detected, for example, by a handling gripper 68, which is moved by means of the cross slide 16.
  • the handling gripper 68 places the ground indexable insert 48, for example in a cassette 70, removes the cassette 70 from an unpolished indexable insert 48 and brings it into the clamping position between the counter-ram 38 and the clamping ram 46.
  • the workpiece namely the indexable insert 48
  • the workpiece is ground by means of the grinding wheel 22.
  • the grinding wheel 22 is delivered in the X-axis and the Z-axis, while a feed movement in the Y-axis via the table 14 can take place.
  • the clamping device is pivoted about the A-axis such that the workpiece spindle axis defined by the counter-ram 38 and the clamping ram 46 is horizontal, i. parallel to the Y-axis.
  • the circumference can now be ground by the counter-ram 38 is rotated by means of the servo motor 34 about the workpiece spindle axis.
  • the workpiece, the indexable insert 48 is frictionally rotated and also the clamping rod 46 rotates freely in the guide bushing 44. Subsequently, the cutting contour of the insert 48 can be ground in the same voltage, for which purpose the clamping device is pivoted about the A-axis by means of the motor 28 , As a result, the angle of attack of the workpiece spindle axis is pivoted against the axis of the grinding wheel 22 to produce, for example, chamfers of the cutting edge, clearance angle surfaces on the circumference and any troughs in the plate planes.
  • the grinding spindle can be pivoted with the grinding tool 23 about the C-axis, also the angle can be adjusted, which includes the grinding spindle axis with the plane, in which the workpiece spindle axis is pivoted when the clamping device is rotated about the A-axis.
  • cup-shaped grinding wheels 22 which are formed with abrasive coatings on the outer circumference and / or on the inner circumference and / or on the front edge.
  • flat grinding wheels can be used which have abrasive linings on the outer circumference and / or on the lateral edge surfaces.
  • These grinding tools can engage the workpiece, in particular an indexable insert, such that the grinding movement runs in the circumferential direction of the indexable insert.
  • the grinding spindle is pivoted about the C-axis so that it lies in the pivot plane of the workpiece spindle axis, ie in the YZ plane.
  • the grinding spindle can also be pivoted about the C axis to a position in which it is perpendicular to the pivot plane of the workpiece spindle axis, ie parallel to the X axis, as in FIG. 2 is shown.
  • the grinding movement runs perpendicular to the indexable insert and its circumferential direction. This also allows concave peripheral lines and contour surfaces to be ground.
  • the positioning of the grinding tool relative to the circumference of the indexable insert is effected by the controlled X-axis, while the feed in the contour is effected by the controlled Y-axis. All grinding operations can be carried out in the same clamping of the workpiece.
  • the counter-ram 38 is shaped so that its diameter decreases conically from the end flanged to the shaft flange of the servomotor 34 against the end abutting the workpiece 48.
  • the plungers 38 and 46 on either side of the tensioned indexable insert 48 a small diameter, so that sufficient space is available to attack with the grinding wheel 22 on both sides of the insert 48 can.
EP09011250A 2008-09-08 2009-09-02 Affûteuse Active EP2161099B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810046086 DE102008046086B4 (de) 2008-09-08 2008-09-08 Schleifmaschine

Publications (3)

Publication Number Publication Date
EP2161099A2 true EP2161099A2 (fr) 2010-03-10
EP2161099A3 EP2161099A3 (fr) 2010-07-14
EP2161099B1 EP2161099B1 (fr) 2011-04-13

Family

ID=41426256

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09011250A Active EP2161099B1 (fr) 2008-09-08 2009-09-02 Affûteuse

Country Status (4)

Country Link
EP (1) EP2161099B1 (fr)
AT (1) ATE505297T1 (fr)
DE (2) DE102008046086B4 (fr)
ES (1) ES2361654T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104741991A (zh) * 2015-04-07 2015-07-01 台州瑞进机械有限公司 用于加工换挡挡块顶工作面的仿形磨床及其加工方法
TWI598185B (zh) * 2013-10-28 2017-09-11 永豐機械有限公司 引擎零件硏磨機的夾持裝置及其三點夾持結構、樞擺操控結構

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104759949B (zh) * 2015-04-07 2017-03-01 台州瑞进机械有限公司 车辆变速器换挡挡块的精加工方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828168A1 (de) 1977-06-28 1979-01-11 Huffman S E Corp Numerisch steuerbare schleifmaschine
DE4301214A1 (en) 1992-02-10 1993-08-12 Agathon Ag Maschf Grinding machine for grinding reversible cutting inserts - has grinding wheel with two concentric abrasive surfaces offset from each other in axial direction
DE4240063A1 (de) 1992-11-28 1994-06-01 Rheinische Braunkohlenw Ag Verfahren zur thermischen Behandlung von Substanzen in einem Drehrohrofen
DE102006035845A1 (de) 2006-08-01 2008-02-07 Erwin Junker Maschinenfabrik Gmbh Verfahren zum Schleifen einer Wendeschneidplatte und Schleifscheibe zur Durchführung des Schleifverfahrens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828168A1 (de) 1977-06-28 1979-01-11 Huffman S E Corp Numerisch steuerbare schleifmaschine
DE4301214A1 (en) 1992-02-10 1993-08-12 Agathon Ag Maschf Grinding machine for grinding reversible cutting inserts - has grinding wheel with two concentric abrasive surfaces offset from each other in axial direction
DE4240063A1 (de) 1992-11-28 1994-06-01 Rheinische Braunkohlenw Ag Verfahren zur thermischen Behandlung von Substanzen in einem Drehrohrofen
DE102006035845A1 (de) 2006-08-01 2008-02-07 Erwin Junker Maschinenfabrik Gmbh Verfahren zum Schleifen einer Wendeschneidplatte und Schleifscheibe zur Durchführung des Schleifverfahrens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI598185B (zh) * 2013-10-28 2017-09-11 永豐機械有限公司 引擎零件硏磨機的夾持裝置及其三點夾持結構、樞擺操控結構
CN104741991A (zh) * 2015-04-07 2015-07-01 台州瑞进机械有限公司 用于加工换挡挡块顶工作面的仿形磨床及其加工方法

Also Published As

Publication number Publication date
DE102008046086A1 (de) 2010-03-11
EP2161099A3 (fr) 2010-07-14
EP2161099B1 (fr) 2011-04-13
ATE505297T1 (de) 2011-04-15
DE502009000532D1 (de) 2011-05-26
ES2361654T3 (es) 2011-06-21
DE102008046086B4 (de) 2015-05-07

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