WO1988004973A1 - Procede pour usiner par enlevement de matiere des ebauches de piece en vue de fabriquer des ailettes de compresseur helicoidal pour compresseur d'air d'admission de vehicules a moteur - Google Patents

Procede pour usiner par enlevement de matiere des ebauches de piece en vue de fabriquer des ailettes de compresseur helicoidal pour compresseur d'air d'admission de vehicules a moteur Download PDF

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Publication number
WO1988004973A1
WO1988004973A1 PCT/DE1988/000006 DE8800006W WO8804973A1 WO 1988004973 A1 WO1988004973 A1 WO 1988004973A1 DE 8800006 W DE8800006 W DE 8800006W WO 8804973 A1 WO8804973 A1 WO 8804973A1
Authority
WO
WIPO (PCT)
Prior art keywords
workpiece
tool
axis
plate
tools
Prior art date
Application number
PCT/DE1988/000006
Other languages
German (de)
English (en)
Inventor
Wolfgang Sander
Ulrich Lilienfein
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 WO1988004973A1 publication Critical patent/WO1988004973A1/fr

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/182—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by the machine tool function, e.g. thread cutting, cam making, tool direction control
    • G05B19/184—Generation of cam-like surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F15/00—Methods or machines for making gear wheels of special kinds not covered by groups B23F7/00 - B23F13/00
    • B23F15/06—Making gear teeth on the front surface of wheels, e.g. for clutches or couplings with toothed faces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q27/00—Geometrical mechanisms for the production of work of particular shapes, not fully provided for in another subclass
    • 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
    • B24B17/00—Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor
    • B24B17/10—Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor involving electrical transmission means only, e.g. controlled by magnetic tape
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/14—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding turbine blades, propeller blades or the like
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/34—Director, elements to supervisory
    • G05B2219/34146—Helical, spiral interpolation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/49—Nc machine tool, till multiple
    • G05B2219/49118—Machine end face, control C-axis and X-axis

Definitions

  • the invention relates to a method for material-removing machining of workpiece blanks for the production of spiral compressor blades for intake air compressors of motor vehicles, with at least one of a plate with a substantially planar surface at 90 °, on the plate along one Spiral narrow, high wall.
  • turbochargers with which the intake air is compressed.
  • These turbochargers are usually driven by means of a turbine which is rotated by the exhaust gas from the internal combustion engine.
  • scroll compressors for compressing gases and liquids, for example also for compressing the intake air of internal combustion engines in motor vehicles, as are also known under the name "G-charger" when used in motor vehicles.
  • Such scroll compressors have a spatially fixed housing and a compressor part movable therein. Both the fixed housing and the compressor part are provided with narrow, high walls, each protruding from a flat surface at 90 ° and running along a spiral on this surface.
  • the compressor part is eccentrically driven in the fixed housing, namely when used in an internal combustion engine of a motor vehicle with approximately 2 to 3 times the engine speed.
  • the eccentric movement of the compressor part compresses air between the spiraling walls and can, for example, be axially discharged in the center of the spiral.
  • a sealing effect is required both in the tangential contact area of the spirally running walls as well as in the face area of the walls that run on the flat surface of the other part.
  • the blades are usually made from workpiece blanks or even from the full material.
  • a milling machine in which the workpiece blank is fastened to the workpiece table in a horizontal direction.
  • the machining milling head is guided in a horizontal plane like a cross table along Cartesian coordinates in order to produce the desired shape of the walls on the plate.
  • the known manufacturing method has proven to be disadvantageous in two points.
  • the horizontal alignment of the plates means that chips accumulate in the spiral space between the walls, which complicates and delays processing,
  • An optical profile grinding machine with numerical control is known from DD-Z "TZ" for practical metalworking, 62 (1968), number 8, pages 411 to 415, which can also have a control according to polar coordinates.
  • the known machine is also used essentially for machining workpieces such as cam disks and the like, which are machined on their outer circumference by means of a grinding wheel, the polar coordinate control being used to set the relative movement between the grinding wheel and the workpiece, and is essentially chosen because also The workpieces are dimensioned according to polar coordinates.
  • DE-G 74 06 370 discloses a grinding machine for attaching decorative cuts to hollow and pressed glasses, in which several grinding wheels process several glasses simultaneously. This document does not refer to the processing case of metallic scroll compressor blades. From DE-PS 418 980 a grinding machine for grinding flat or conical ring surfaces on circumferential rings is known, in which several workpieces which are in contact with different peripheral positions of the grinding wheel are processed simultaneously with a single grinding wheel.
  • an automatic internal cylindrical grinding machine is also known from DD-PS 124 020, in which a grinding chute, which is equipped with grinding tools offset by 180 °, can be moved along a linear axis, namely in the direction of the two grinding tools.
  • Two workpieces, also offset by 180 ° to the grinding chute, are arranged in the direction of the traversing axis of the grinding slide, so that in one processing position the one grinding tool of the grinding slide first processes the one workpiece and then, after moving the grinding slide, the other grinding tool processes the other workpiece.
  • the invention is based on the object of developing the method mentioned at the outset in such a way that, with the shortest possible machining time, an optimum surface quality is produced in the area of the plate surface and the wall surfaces of the scroll compressor blades.
  • a control device changes the relative position of the workpiece blank to the grinding tool along polar coordinates without a point of origin.
  • the workpiece blank is preferably rotated and the tool is moved along Cartesian coordinates perpendicular to the axis of rotation.
  • the object on which the invention is based is thereby completely achieved because, on the one hand, the use of a grinding machine naturally guarantees high surface qualities, because in such grinding machines the tool rotates at an extremely high speed of typically well over 30,000 rpm, i.e. several orders of magnitude faster than is the case with known milling machines, such as were used in the method mentioned at the beginning.
  • the spindles can preferably rotate in the range between 60,000 and 150,000 rpm. At these speeds, the cutting speed of the tool is greater than the recrystallization rate of the processed material, which processes in this way in the soft to liquid state
  • the vertical alignment of the surface of the plate means that the removed tool chips can fall out of the spiral intermediate space between the walls during the rotation of the plate and cannot be collected in it, as is the case when the plate is oriented horizontally Surface is the case.
  • the control of the relative position of the workpiece blank and tool relative to one another by means of the movement superimposition along polar coordinates and Cartesian coordinates means that the locus of the tool on the workpiece blank u runs without a point of return, so that the entire machining can take place along a continuous locus and optimal surface qualities result.
  • the workpiece blank can be rotated about an axis perpendicular to the surface in defined angular positions and the tool along one to the surface parallel axis can be moved into defined axial positions, although in principle an opposite control is also possible in kinematic reversal.
  • a plurality of workpiece blanks are machined simultaneously with a plurality of tools, the workpiece blanks or the tools being moved together in each case.
  • This measure has the advantage that a large number of workpiece blanks can be processed at the same time with a common control, which brings about production advantages.
  • two tools offset by 180 "process two associated workpiece blanks offset by 180 °.
  • This measure has the advantage that the two tools e.g. can be arranged on a common, centrally driven shaft at the shaft ends, so that they are moved together by themselves.
  • FIG. 1a and 1b a scroll compressor blade produced by the method according to the invention in side view and in plan view;
  • Fig. 2 is a highly schematic representation of a
  • Fig. 3 is a representation similar to Fig. 1b, but with registered loci of tools according to the invention and according to the prior art.
  • 10 denotes a total of a scroll compressor blade, such as can be used for scroll compressors of internal combustion engines in motor vehicles.
  • a plate 12 with an essentially flat surface 15 is located on a fastening flange 11.
  • a wall 13 projects from the surface 15 of the plate 12 at 90 °. As can clearly be seen in FIG. 1 b, the wall 13 runs along a spiral, the center of which is an axis of rotation 16 of the spiral compressor blade 10.
  • the contour of a possible workpiece blank from which the scroll compressor blade 10 is produced, as will be explained below, is indicated by dashed lines at 14.
  • the workpiece blank 14 can be solid material, but it is also possible to produce a workpiece blank by means of suitable manufacturing processes, the outer shape of which already substantially corresponds to the scroll compressor blade 10 and the surface of which only requires a fine machining.
  • Fig. 2 shows in a highly schematic form that the workpiece blank 14 for the scroll compressor blade 10 is clamped in a chuck 20 of a CNC grinding machine shown schematically such that the surface 15 of the plate 12 lies in a vertical plane.
  • a first drive unit 21 with a horizontal axis 25 represents a rotation axis 22 for the workpiece blank 14, which is referred to in technical terms as the "C axis".
  • a second drive unit 23 is rigidly coupled to the first drive unit 21 and realizes a first linear axis 24 along the axis 25, which is referred to in technical terms as the “Z axis”.
  • a grinding or milling tool 30, which can be brought into engagement with the workpiece blank 14, can be rotated about an axis 29 parallel to the axis 25.
  • the tool 30 is driven by a spindle 31, which contains a turbine, an electromagnetic drive or the like.
  • the spindle 3 is rigidly connected to a third drive unit 3, which runs along a axis perpendicular to the axis 25.
  • th axis 35 is movable and thus forms a second linear axis 33, which is referred to in technical terms as the "X axis”.
  • a common control unit 34 is provided for controlling the drive units 21, 23 and 32 along the C axis of rotation 22, the Z linear axis 24 and the X linear axis 33.
  • the C rotary axis 22 and the X linear axis 33 serve to set Polar coordinates along which the tool 30 is moved relative to the workpiece blank 14.
  • FIG. 2 it is also indicated by dashed lines that the drive unit 32, for example on a common shaft with two spindles 1 offset by 180 ° . 31a and tools 30, 30a arranged thereon can be provided.
  • This arrangement serves for the simultaneous machining of two workpiece blanks 14, 14a, which are also clamped symmetrically to the axis of the drive unit 32 and are also moved together.
  • the two workpiece blanks 14, 14a with their learners 12, 12a can be rotated together slowly (C axis 22) and can be fed in opposite directions (Z axis 24), while the third drive unit 2 without further changes can be deflected (X-axis 33).
  • the common control unit 34 only needs to be modified so that the infeed movement in the Z-axis se 24 takes place in opposite directions for both workpiece blanks 14, 14a, while the rest of the polar coordinate control can remain unchanged because this relates only to the C axis 22 and the X axis 33.
  • FIG. 3 shows, the deflection of the tool 30 along polar coordinates has the consequence that the tool 30 can be guided along a locus curve in the form of a spiral path 40 with extremely simple means, which in FIG a circumferential line 41 is particularly clearly recognizable.
  • FIG. 3 with reference to a linear path 42, which has a reversal point at 43, in which the tool reverses when approaching the wall 13, i.e. had to deflect its locus by 180 ".

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Geometry (AREA)
  • Milling Processes (AREA)
  • Rotary Pumps (AREA)

Abstract

Un procédé sert à usiner par enlèvement de matière des ébauches de pièce (14) en vue de fabriquer des ailettes de compresseur hélicoïdal. Ces ailettes présentent au moins une paroi hélicoïdale (13) qui s'étend perpendiculairement à un plateau (12) ayant une surface (15) sensiblement plane. Afin de réduire au minimum le temps d'usinage des ébauches de pièce (14) et d'optimiser la qualité de leur surface, on monte l'ébauche (14) dans une rectifieuse à commande numérique (20 à 24, 30 à 34) de telle manière que la surface (15) du plateau (12) soit verticale. L'ébauche (14) est usinée par un outil (30) tournant autour d'un axe horizontal (35) à plus de 30 000 tours/minute environ. Une unité de commande (34) modifie la position relative de l'ébauche (14) par rapport à l'outil (30) en suivant des coordonnées polaires et des coordonnées cartésiennes.
PCT/DE1988/000006 1987-01-09 1988-01-06 Procede pour usiner par enlevement de matiere des ebauches de piece en vue de fabriquer des ailettes de compresseur helicoidal pour compresseur d'air d'admission de vehicules a moteur WO1988004973A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3700442.5 1987-01-09
DE19873700442 DE3700442A1 (de) 1987-01-09 1987-01-09 Verfahren zum materialabtragenden bearbeiten von werkstueckrohlingen zur herstellung von spiralverdichter-schaufeln

Publications (1)

Publication Number Publication Date
WO1988004973A1 true WO1988004973A1 (fr) 1988-07-14

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Application Number Title Priority Date Filing Date
PCT/DE1988/000006 WO1988004973A1 (fr) 1987-01-09 1988-01-06 Procede pour usiner par enlevement de matiere des ebauches de piece en vue de fabriquer des ailettes de compresseur helicoidal pour compresseur d'air d'admission de vehicules a moteur

Country Status (2)

Country Link
DE (1) DE3700442A1 (fr)
WO (1) WO1988004973A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0521235A2 (fr) * 1991-06-24 1993-01-07 Tecumseh Products Company Méthode et dispositif pour fabriquer des feuilles à volutes
CN110653714A (zh) * 2019-09-30 2020-01-07 杭州筱酷贸易有限公司 一种乐器的鼓面抛光自动调节装置
CN111070028A (zh) * 2019-11-26 2020-04-28 天津津航技术物理研究所 一种非旋转对称表面光学加工轨迹设计方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603042A (en) * 1950-06-26 1952-07-15 American Cast Iron Pipe Co Apparatus for grinding and gauging objects such as nuts
FR1068007A (fr) * 1952-09-12 1954-06-22 Porte-meule de rectification pour rectifieuse à têtes multiples
FR1378424A (fr) * 1963-12-11 1964-11-13 Matra Werke Gmbh Machine à tourner et à rectifier destinée à l'usinage des surfaces planes de pièces de révolution
DE1527115A1 (de) * 1962-12-13 1969-10-30 Kollsman Instr Corp Vorrichtung zur Herstellung von Zahnraedern
US3715787A (en) * 1970-11-25 1973-02-13 A Hudson Kinetic energy device for forming work pieces
DE2149324A1 (de) * 1971-10-02 1973-04-05 Werner Busch Verfahren zur erzeugung einer zylinderflaeche mit kreisvolventenprofil
US4286413A (en) * 1980-01-16 1981-09-01 Aktiebolaget Bofors Hole grinding machine
DE3444904A1 (de) * 1984-12-08 1986-06-12 Messer Griesheim Gmbh, 6000 Frankfurt Verfahren zum zweidimensionalen bearbeiten von werkstuecken mit einem werkzeug, insbesondere zum formschneiden von saegeblaettern mit einem laserstrahl

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE418980C (de) * 1923-11-16 1925-09-17 Karl Jung Schleifen ebener oder kegelfoermiger Ringflaechen an umlaufende Ringe, insonderheit solche fuer Kugellager
DE7406370U (de) * 1974-02-23 1975-08-14 Poeting W Kg Schleifmaschine fuer die anbringung von dekorationsschliffen an hohl und pressglaesern
DD124020A1 (fr) * 1975-11-28 1977-02-02

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603042A (en) * 1950-06-26 1952-07-15 American Cast Iron Pipe Co Apparatus for grinding and gauging objects such as nuts
FR1068007A (fr) * 1952-09-12 1954-06-22 Porte-meule de rectification pour rectifieuse à têtes multiples
DE1527115A1 (de) * 1962-12-13 1969-10-30 Kollsman Instr Corp Vorrichtung zur Herstellung von Zahnraedern
FR1378424A (fr) * 1963-12-11 1964-11-13 Matra Werke Gmbh Machine à tourner et à rectifier destinée à l'usinage des surfaces planes de pièces de révolution
US3715787A (en) * 1970-11-25 1973-02-13 A Hudson Kinetic energy device for forming work pieces
DE2149324A1 (de) * 1971-10-02 1973-04-05 Werner Busch Verfahren zur erzeugung einer zylinderflaeche mit kreisvolventenprofil
US4286413A (en) * 1980-01-16 1981-09-01 Aktiebolaget Bofors Hole grinding machine
DE3444904A1 (de) * 1984-12-08 1986-06-12 Messer Griesheim Gmbh, 6000 Frankfurt Verfahren zum zweidimensionalen bearbeiten von werkstuecken mit einem werkzeug, insbesondere zum formschneiden von saegeblaettern mit einem laserstrahl

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0521235A2 (fr) * 1991-06-24 1993-01-07 Tecumseh Products Company Méthode et dispositif pour fabriquer des feuilles à volutes
EP0521235A3 (en) * 1991-06-24 1993-03-03 Tecumseh Products Company Method and apparatus for machining scroll wraps
CN110653714A (zh) * 2019-09-30 2020-01-07 杭州筱酷贸易有限公司 一种乐器的鼓面抛光自动调节装置
CN111070028A (zh) * 2019-11-26 2020-04-28 天津津航技术物理研究所 一种非旋转对称表面光学加工轨迹设计方法
CN111070028B (zh) * 2019-11-26 2022-06-14 天津津航技术物理研究所 一种非旋转对称表面光学加工轨迹设计方法

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Publication number Publication date
DE3700442A1 (de) 1988-07-21

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